Rename to craban

server/cmd/craban/craban.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"os/signal"
+
+	"git.ctrlz.es/mgdelacroix/craban/server"
+)
+
+func main() {
+	configFlag := flag.String("config", "craban.yml", "the configuration path")
+	flag.Parse()
+
+	srv, err := server.NewServerWithConfigPath(*configFlag)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "cannot create server: %s", err)
+		os.Exit(1)
+	}
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+	closed := make(chan bool, 1)
+
+	go func() {
+		fmt.Println("Starting craban")
+		if err := srv.Start(); err != nil {
+			fmt.Fprintf(os.Stderr, "error running server: %s", err)
+			os.Exit(1)
+		}
+		closed <- true
+	}()
+
+	s := <-c
+	fmt.Printf("Got signal %s, exiting...\n", s)
+	if err := srv.Close(); err != nil {
+		fmt.Fprintf(os.Stderr, "error closing server: %s", err)
+		os.Exit(1)
+	}
+	<-closed
+}

server/craban.yml

@@ -0,0 +1,3 @@
+---
+database_path: craban.sqlite
+port: 8080

server/go.mod

@@ -0,0 +1,21 @@
+module git.ctrlz.es/mgdelacroix/craban
+
+go 1.17
+
+require (
+	github.com/Masterminds/squirrel v1.5.0
+	github.com/google/uuid v1.3.0
+	github.com/icrowley/fake v0.0.0-20180203215853-4178557ae428
+	github.com/mattn/go-sqlite3 v1.14.8
+	github.com/stretchr/testify v1.7.0
+	gopkg.in/yaml.v2 v2.4.0
+)
+
+require (
+	github.com/corpix/uarand v0.1.1 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/lann/builder v0.0.0-20180802200727-47ae307949d0 // indirect
+	github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+)

server/go.sum

@@ -0,0 +1,38 @@
+github.com/Masterminds/glide v0.13.2/go.mod h1:STyF5vcenH/rUqTEv+/hBXlSTo7KYwg2oc2f4tzPWic=
+github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/squirrel v1.5.0 h1:JukIZisrUXadA9pl3rMkjhiamxiB0cXiu+HGp/Y8cY8=
+github.com/Masterminds/squirrel v1.5.0/go.mod h1:NNaOrjSoIDfDA40n7sr2tPNZRfjzjA400rg+riTZj10=
+github.com/Masterminds/vcs v1.13.0/go.mod h1:N09YCmOQr6RLxC6UNHzuVwAdodYbbnycGHSmwVJjcKA=
+github.com/codegangsta/cli v1.20.0/go.mod h1:/qJNoX69yVSKu5o4jLyXAENLRyk1uhi7zkbQ3slBdOA=
+github.com/corpix/uarand v0.1.1 h1:RMr1TWc9F4n5jiPDzFHtmaUXLKLNUFK0SgCLo4BhX/U=
+github.com/corpix/uarand v0.1.1/go.mod h1:SFKZvkcRoLqVRFZ4u25xPmp6m9ktANfbpXZ7SJ0/FNU=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/icrowley/fake v0.0.0-20180203215853-4178557ae428 h1:Mo9W14pwbO9VfRe+ygqZ8dFbPpoIK1HFrG/zjTuQ+nc=
+github.com/icrowley/fake v0.0.0-20180203215853-4178557ae428/go.mod h1:uhpZMVGznybq1itEKXj6RYw9I71qK4kH+OGMjRC4KEo=
+github.com/lann/builder v0.0.0-20180802200727-47ae307949d0 h1:SOEGU9fKiNWd/HOJuq6+3iTQz8KNCLtVX6idSoTLdUw=
+github.com/lann/builder v0.0.0-20180802200727-47ae307949d0/go.mod h1:dXGbAdH5GtBTC4WfIxhKZfyBF/HBFgRZSWwZ9g/He9o=
+github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 h1:P6pPBnrTSX3DEVR4fDembhRWSsG5rVo6hYhAB/ADZrk=
+github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0/go.mod h1:vmVJ0l/dxyfGW6FmdpVm2joNMFikkuWg0EoCKLGUMNw=
+github.com/mattn/go-sqlite3 v1.14.8 h1:gDp86IdQsN/xWjIEmr9MF6o9mpksUgh0fu+9ByFxzIU=
+github.com/mattn/go-sqlite3 v1.14.8/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/ngdinhtoan/glide-cleanup v0.2.0/go.mod h1:UQzsmiDOb8YV3nOsCxK/c9zPpCZVNoHScRE3EO9pVMM=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

server/model/config.go

@@ -0,0 +1,49 @@
+package model
+
+import (
+	"fmt"
+	"io/ioutil"
+
+	"gopkg.in/yaml.v2"
+)
+
+const (
+	DefaultPort = 8080
+)
+
+type Config struct {
+	DatabasePath *string `yaml:"database_path"`
+	Port         *int    `yaml:"port"`
+}
+
+func (c *Config) SetDefaults() {
+	if c.Port == nil {
+		c.Port = NewInt(DefaultPort)
+	}
+}
+
+func (c *Config) IsValid() error {
+	if c.DatabasePath == nil || *c.DatabasePath == "" {
+		return fmt.Errorf("database_path cannot be empty")
+	}
+
+	if c.Port == nil || *c.Port == 0 {
+		return fmt.Errorf("port cannot be empty")
+	}
+
+	return nil
+}
+
+func ReadConfig(path string) (*Config, error) {
+	b, err := ioutil.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	var config Config
+	if err := yaml.Unmarshal(b, &config); err != nil {
+		return nil, err
+	}
+
+	return &config, nil
+}

server/model/game.go

@@ -0,0 +1,7 @@
+package model
+
+type Game struct {
+	ID     int
+	UserID int
+	Name   string
+}

server/model/game_member.go

@@ -0,0 +1,12 @@
+package model
+
+const (
+	RoleGameMaster = "role_game_master"
+	RolePlayer     = "role_player"
+)
+
+type GameMember struct {
+	GameID int
+	UserID int
+	Role   string
+}

server/model/user.go

@@ -0,0 +1,33 @@
+package model
+
+import (
+	"fmt"
+)
+
+type User struct {
+	ID       int
+	Name     string
+	Mail     string
+	Username string
+	Password string
+}
+
+func (u *User) IsValid() error {
+	if u.Name == "" {
+		return fmt.Errorf("name must not be empty")
+	}
+
+	if u.Mail == "" {
+		return fmt.Errorf("mail must not be empty")
+	}
+
+	if u.Username == "" {
+		return fmt.Errorf("username must not be empty")
+	}
+
+	if u.Password == "" {
+		return fmt.Errorf("password must not be empty")
+	}
+
+	return nil
+}

server/model/utils.go

@@ -0,0 +1,12 @@
+package model
+
+import (
+	"github.com/google/uuid"
+)
+
+func NewString(s string) *string { return &s }
+func NewInt(i int) *int          { return &i }
+
+func NewID() string {
+	return uuid.New().String()
+}

server/server/server.go

@@ -3,9 +3,9 @@ package server
 import (
 	"fmt"
 
-	"git.ctrlz.es/mgdelacroix/rmsn/model"
-	"git.ctrlz.es/mgdelacroix/rmsn/services/store"
-	"git.ctrlz.es/mgdelacroix/rmsn/web"
+	"git.ctrlz.es/mgdelacroix/craban/model"
+	"git.ctrlz.es/mgdelacroix/craban/services/store"
+	"git.ctrlz.es/mgdelacroix/craban/web"
 )
 
 type Server struct {

server/services/store/store.go

@@ -0,0 +1,80 @@
+package store
+
+import (
+	"database/sql"
+	"fmt"
+	"strings"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+type Store struct {
+	Path string
+	Conn *sql.DB
+
+	userStore *UserStore
+}
+
+func addPathOptions(path string) string {
+	if !strings.HasPrefix(path, ":memory:") {
+		path = "file:" + path
+	}
+	return fmt.Sprintf("%s?_foreign_keys=true", path)
+}
+
+func NewStore(path string) (*Store, error) {
+	s := &Store{Path: path}
+
+	// ToDo: should do this at start time instead of create time?
+	conn, err := sql.Open("sqlite3", addPathOptions(path))
+	if err != nil {
+		return nil, err
+	}
+	s.Conn = conn
+
+	if err := s.EnsureSchema(); err != nil {
+		return nil, err
+	}
+
+	// init stores
+	s.userStore = NewUserStore(s)
+
+	return s, nil
+}
+
+func (s *Store) Close() error {
+	return s.Conn.Close()
+}
+
+func (s *Store) User() *UserStore {
+	return s.userStore
+}
+
+func (s *Store) EnsureSchema() error {
+	schema := `
+CREATE TABLE IF NOT EXISTS users (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  name VARCHAR(255) NOT NULL,
+  mail VARCHAR(255) UNIQUE NOT NULL,
+  username VARCHAR(255) UNIQUE NOT NULL,
+  password VARCHAR(255) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS game (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  user_id INTEGER NOT NULL,
+  name VARCHAR(255) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS gamemember (
+  game_id INTEGER NOT NULL,
+  user_id INTEGER NOT NULL,
+  role VARCHAR(255) NOT NULL,
+
+  PRIMARY KEY (game_id, user_id)
+);
+`
+
+	_, err := s.Conn.Exec(schema)
+	return err
+}

server/services/store/store_test.go

@@ -0,0 +1,32 @@
+package store
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAddPathOptions(t *testing.T) {
+	testCases := []struct {
+		Name     string
+		Path     string
+		Expected string
+	}{
+		{
+			Name:     "Path is memory",
+			Path:     ":memory:",
+			Expected: ":memory:?_foreign_keys=true",
+		},
+		{
+			Name:     "Path is a file path",
+			Path:     "./some_file.sqlite",
+			Expected: "file:./some_file.sqlite?_foreign_keys=true",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.Name, func(t *testing.T) {
+			require.Equal(t, tc.Expected, addPathOptions(tc.Path))
+		})
+	}
+}

server/services/store/testlib.go

@@ -0,0 +1,40 @@
+package store
+
+import (
+	"testing"
+
+	"git.ctrlz.es/mgdelacroix/craban/model"
+
+	"github.com/icrowley/fake"
+	"github.com/stretchr/testify/require"
+)
+
+type TestHelper struct {
+	t     *testing.T
+	store *Store
+}
+
+func NewTestHelper(t *testing.T) (*TestHelper, func()) {
+	s, err := NewStore(":memory:")
+	require.NoError(t, err)
+
+	teardown := func() {
+		require.NoError(t, s.Close())
+	}
+
+	return &TestHelper{t: t, store: s}, teardown
+}
+
+func (th *TestHelper) NewUser() *model.User {
+	user := &model.User{
+		Name:     fake.FullName(),
+		Mail:     fake.EmailAddress(),
+		Username: fake.UserName(),
+		Password: fake.SimplePassword(),
+	}
+
+	newUser, err := th.store.User().Create(user)
+	require.NoError(th.t, err)
+
+	return newUser
+}

server/services/store/user.go

@@ -0,0 +1,87 @@
+package store
+
+import (
+	"database/sql"
+
+	sq "github.com/Masterminds/squirrel"
+
+	"git.ctrlz.es/mgdelacroix/craban/model"
+)
+
+var userColumns = []string{"id", "name", "mail", "username", "password"}
+
+type UserStore struct {
+	Conn *sql.DB
+}
+
+func NewUserStore(s *Store) *UserStore {
+	return &UserStore{Conn: s.Conn}
+}
+
+func (us *UserStore) Q() sq.StatementBuilderType {
+	return sq.StatementBuilder.RunWith(us.Conn)
+}
+
+func (us *UserStore) usersFromRows(rows *sql.Rows) ([]*model.User, error) {
+	users := []*model.User{}
+
+	for rows.Next() {
+		var user model.User
+
+		err := rows.Scan(
+			&user.ID,
+			&user.Name,
+			&user.Mail,
+			&user.Username,
+			&user.Password,
+		)
+		if err != nil {
+			return nil, err
+		}
+
+		users = append(users, &user)
+	}
+
+	return users, nil
+}
+
+func (us *UserStore) GetByID(id int) (*model.User, error) {
+	query := us.Q().Select(userColumns...).
+		From("users").
+		Where(sq.Eq{"id": id})
+
+	rows, err := query.Query()
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	users, err := us.usersFromRows(rows)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(users) == 0 {
+		return nil, sql.ErrNoRows
+	}
+
+	return users[0], nil
+}
+
+func (us *UserStore) Create(user *model.User) (*model.User, error) {
+	query := us.Q().Insert("users").
+		Columns(userColumns[1:]...).
+		Values(user.Name, user.Mail, user.Username, user.Password)
+
+	res, err := query.Exec()
+	if err != nil {
+		return nil, err
+	}
+
+	id, err := res.LastInsertId()
+	if err != nil {
+		return nil, err
+	}
+
+	return us.GetByID(int(id))
+}

server/services/store/user_test.go

@@ -0,0 +1,44 @@
+package store
+
+import (
+	"testing"
+
+	"git.ctrlz.es/mgdelacroix/craban/model"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestCreateUser(t *testing.T) {
+	th, teardown := NewTestHelper(t)
+	defer teardown()
+
+	user := &model.User{
+		Name:     "John",
+		Mail:     "john_doe@example.com",
+		Username: "john_doe",
+		Password: "mysupersecret",
+	}
+
+	newUser, err := th.store.User().Create(user)
+	require.NoError(t, err)
+	require.NotZero(t, newUser.ID)
+	require.Equal(t, user.Name, newUser.Name)
+	require.Equal(t, user.Mail, newUser.Mail)
+	require.Equal(t, user.Username, newUser.Username)
+	require.Equal(t, user.Password, newUser.Password)
+}
+
+func TestGetByID(t *testing.T) {
+	th, teardown := NewTestHelper(t)
+	defer teardown()
+
+	user := th.NewUser()
+
+	user2, err := th.store.User().GetByID(user.ID)
+	require.NoError(t, err)
+	require.Equal(t, user.ID, user2.ID)
+	require.Equal(t, user.Name, user2.Name)
+	require.Equal(t, user.Mail, user2.Mail)
+	require.Equal(t, user.Username, user2.Username)
+	require.Equal(t, user.Password, user2.Password)
+}

server/vendor/github.com/Masterminds/squirrel/.gitignore

@@ -0,0 +1 @@
+squirrel.test

server/vendor/github.com/Masterminds/squirrel/.travis.yml

@@ -0,0 +1,30 @@
+language: go
+
+go:
+  - 1.11.x
+  - 1.12.x
+  - 1.13.x
+
+services:
+  - mysql
+  - postgresql
+
+# Setting sudo access to false will let Travis CI use containers rather than
+# VMs to run the tests. For more details see:
+# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
+# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
+sudo: false
+
+before_script:
+  - mysql -e 'CREATE DATABASE squirrel;'
+  - psql -c 'CREATE DATABASE squirrel;' -U postgres
+
+script:
+  - go test
+  - cd integration
+  - go test -args -driver sqlite3
+  - go test -args -driver mysql -dataSource travis@/squirrel
+  - go test -args -driver postgres -dataSource 'postgres://postgres@localhost/squirrel?sslmode=disable'
+
+notifications:
+  irc: "irc.freenode.net#masterminds"

server/vendor/github.com/Masterminds/squirrel/LICENSE.txt

@@ -0,0 +1,23 @@
+Squirrel
+The Masterminds
+Copyright (C) 2014-2015, Lann Martin
+Copyright (C) 2015-2016, Google
+Copyright (C) 2015, Matt Farina and Matt Butcher
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

server/vendor/github.com/Masterminds/squirrel/README.md

@@ -0,0 +1,142 @@
+[![Project Status: Inactive – The project has reached a stable, usable state but is no longer being actively developed; support/maintenance will be provided as time allows.](https://www.repostatus.org/badges/latest/inactive.svg)](https://www.repostatus.org/#inactive)
+### Squirrel is "complete".
+Bug fixes will still be merged (slowly). Bug reports are welcome, but I will not necessarily respond to them. If another fork (or substantially similar project) actively improves on what Squirrel does, let me know and I may link to it here.
+
+
+# Squirrel - fluent SQL generator for Go
+
+```go
+import "github.com/Masterminds/squirrel"
+```
+
+
+[![GoDoc](https://godoc.org/github.com/Masterminds/squirrel?status.png)](https://godoc.org/github.com/Masterminds/squirrel)
+[![Build Status](https://api.travis-ci.org/Masterminds/squirrel.svg?branch=master)](https://travis-ci.org/Masterminds/squirrel)
+
+**Squirrel is not an ORM.** For an application of Squirrel, check out
+[structable, a table-struct mapper](https://github.com/Masterminds/structable)
+
+
+Squirrel helps you build SQL queries from composable parts:
+
+```go
+import sq "github.com/Masterminds/squirrel"
+
+users := sq.Select("*").From("users").Join("emails USING (email_id)")
+
+active := users.Where(sq.Eq{"deleted_at": nil})
+
+sql, args, err := active.ToSql()
+
+sql == "SELECT * FROM users JOIN emails USING (email_id) WHERE deleted_at IS NULL"
+```
+
+```go
+sql, args, err := sq.
+    Insert("users").Columns("name", "age").
+    Values("moe", 13).Values("larry", sq.Expr("? + 5", 12)).
+    ToSql()
+
+sql == "INSERT INTO users (name,age) VALUES (?,?),(?,? + 5)"
+```
+
+Squirrel can also execute queries directly:
+
+```go
+stooges := users.Where(sq.Eq{"username": []string{"moe", "larry", "curly", "shemp"}})
+three_stooges := stooges.Limit(3)
+rows, err := three_stooges.RunWith(db).Query()
+
+// Behaves like:
+rows, err := db.Query("SELECT * FROM users WHERE username IN (?,?,?,?) LIMIT 3",
+                      "moe", "larry", "curly", "shemp")
+```
+
+Squirrel makes conditional query building a breeze:
+
+```go
+if len(q) > 0 {
+    users = users.Where("name LIKE ?", fmt.Sprint("%", q, "%"))
+}
+```
+
+Squirrel wants to make your life easier:
+
+```go
+// StmtCache caches Prepared Stmts for you
+dbCache := sq.NewStmtCacher(db)
+
+// StatementBuilder keeps your syntax neat
+mydb := sq.StatementBuilder.RunWith(dbCache)
+select_users := mydb.Select("*").From("users")
+```
+
+Squirrel loves PostgreSQL:
+
+```go
+psql := sq.StatementBuilder.PlaceholderFormat(sq.Dollar)
+
+// You use question marks for placeholders...
+sql, _, _ := psql.Select("*").From("elephants").Where("name IN (?,?)", "Dumbo", "Verna").ToSql()
+
+/// ...squirrel replaces them using PlaceholderFormat.
+sql == "SELECT * FROM elephants WHERE name IN ($1,$2)"
+
+
+/// You can retrieve id ...
+query := sq.Insert("nodes").
+    Columns("uuid", "type", "data").
+    Values(node.Uuid, node.Type, node.Data).
+    Suffix("RETURNING \"id\"").
+    RunWith(m.db).
+    PlaceholderFormat(sq.Dollar)
+
+query.QueryRow().Scan(&node.id)
+```
+
+You can escape question marks by inserting two question marks:
+
+```sql
+SELECT * FROM nodes WHERE meta->'format' ??| array[?,?]
+```
+
+will generate with the Dollar Placeholder:
+
+```sql
+SELECT * FROM nodes WHERE meta->'format' ?| array[$1,$2]
+```
+
+## FAQ
+
+* **How can I build an IN query on composite keys / tuples, e.g. `WHERE (col1, col2) IN ((1,2),(3,4))`? ([#104](https://github.com/Masterminds/squirrel/issues/104))**
+
+    Squirrel does not explicitly support tuples, but you can get the same effect with e.g.:
+
+    ```go
+    sq.Or{
+      sq.Eq{"col1": 1, "col2": 2},
+      sq.Eq{"col1": 3, "col2": 4}}
+    ```
+
+    ```sql
+    WHERE (col1 = 1 AND col2 = 2) OR (col1 = 3 AND col2 = 4)
+    ```
+
+    (which should produce the same query plan as the tuple version)
+
+* **Why doesn't `Eq{"mynumber": []uint8{1,2,3}}` turn into an `IN` query? ([#114](https://github.com/Masterminds/squirrel/issues/114))**
+
+    Values of type `[]byte` are handled specially by `database/sql`. In Go, [`byte` is just an alias of `uint8`](https://golang.org/pkg/builtin/#byte), so there is no way to distinguish `[]uint8` from `[]byte`.
+
+* **Some features are poorly documented!**
+
+    This isn't a frequent complaints section!
+
+* **Some features are poorly documented?**
+
+    Yes. The tests should be considered a part of the documentation; take a look at those for ideas on how to express more complex queries.
+
+## License
+
+Squirrel is released under the
+[MIT License](http://www.opensource.org/licenses/MIT).

server/vendor/github.com/Masterminds/squirrel/case.go

@@ -0,0 +1,118 @@
+package squirrel
+
+import (
+	"bytes"
+	"errors"
+
+	"github.com/lann/builder"
+)
+
+func init() {
+	builder.Register(CaseBuilder{}, caseData{})
+}
+
+// sqlizerBuffer is a helper that allows to write many Sqlizers one by one
+// without constant checks for errors that may come from Sqlizer
+type sqlizerBuffer struct {
+	bytes.Buffer
+	args []interface{}
+	err  error
+}
+
+// WriteSql converts Sqlizer to SQL strings and writes it to buffer
+func (b *sqlizerBuffer) WriteSql(item Sqlizer) {
+	if b.err != nil {
+		return
+	}
+
+	var str string
+	var args []interface{}
+	str, args, b.err = item.ToSql()
+
+	if b.err != nil {
+		return
+	}
+
+	b.WriteString(str)
+	b.WriteByte(' ')
+	b.args = append(b.args, args...)
+}
+
+func (b *sqlizerBuffer) ToSql() (string, []interface{}, error) {
+	return b.String(), b.args, b.err
+}
+
+// whenPart is a helper structure to describe SQLs "WHEN ... THEN ..." expression
+type whenPart struct {
+	when Sqlizer
+	then Sqlizer
+}
+
+func newWhenPart(when interface{}, then interface{}) whenPart {
+	return whenPart{newPart(when), newPart(then)}
+}
+
+// caseData holds all the data required to build a CASE SQL construct
+type caseData struct {
+	What      Sqlizer
+	WhenParts []whenPart
+	Else      Sqlizer
+}
+
+// ToSql implements Sqlizer
+func (d *caseData) ToSql() (sqlStr string, args []interface{}, err error) {
+	if len(d.WhenParts) == 0 {
+		err = errors.New("case expression must contain at lease one WHEN clause")
+
+		return
+	}
+
+	sql := sqlizerBuffer{}
+
+	sql.WriteString("CASE ")
+	if d.What != nil {
+		sql.WriteSql(d.What)
+	}
+
+	for _, p := range d.WhenParts {
+		sql.WriteString("WHEN ")
+		sql.WriteSql(p.when)
+		sql.WriteString("THEN ")
+		sql.WriteSql(p.then)
+	}
+
+	if d.Else != nil {
+		sql.WriteString("ELSE ")
+		sql.WriteSql(d.Else)
+	}
+
+	sql.WriteString("END")
+
+	return sql.ToSql()
+}
+
+// CaseBuilder builds SQL CASE construct which could be used as parts of queries.
+type CaseBuilder builder.Builder
+
+// ToSql builds the query into a SQL string and bound args.
+func (b CaseBuilder) ToSql() (string, []interface{}, error) {
+	data := builder.GetStruct(b).(caseData)
+	return data.ToSql()
+}
+
+// what sets optional value for CASE construct "CASE [value] ..."
+func (b CaseBuilder) what(expr interface{}) CaseBuilder {
+	return builder.Set(b, "What", newPart(expr)).(CaseBuilder)
+}
+
+// When adds "WHEN ... THEN ..." part to CASE construct
+func (b CaseBuilder) When(when interface{}, then interface{}) CaseBuilder {
+	// TODO: performance hint: replace slice of WhenPart with just slice of parts
+	// where even indices of the slice belong to "when"s and odd indices belong to "then"s
+	return builder.Append(b, "WhenParts", newWhenPart(when, then)).(CaseBuilder)
+}
+
+// What sets optional "ELSE ..." part for CASE construct
+func (b CaseBuilder) Else(expr interface{}) CaseBuilder {
+	return builder.Set(b, "Else", newPart(expr)).(CaseBuilder)
+}

server/vendor/github.com/Masterminds/squirrel/delete.go

@@ -0,0 +1,181 @@
+package squirrel
+
+import (
+	"bytes"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/lann/builder"
+)
+
+type deleteData struct {
+	PlaceholderFormat PlaceholderFormat
+	RunWith           BaseRunner
+	Prefixes          []Sqlizer
+	From              string
+	WhereParts        []Sqlizer
+	OrderBys          []string
+	Limit             string
+	Offset            string
+	Suffixes          []Sqlizer
+}
+
+func (d *deleteData) Exec() (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return ExecWith(d.RunWith, d)
+}
+
+func (d *deleteData) ToSql() (sqlStr string, args []interface{}, err error) {
+	if len(d.From) == 0 {
+		err = fmt.Errorf("delete statements must specify a From table")
+		return
+	}
+
+	sql := &bytes.Buffer{}
+
+	if len(d.Prefixes) > 0 {
+		args, err = appendToSql(d.Prefixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+
+		sql.WriteString(" ")
+	}
+
+	sql.WriteString("DELETE FROM ")
+	sql.WriteString(d.From)
+
+	if len(d.WhereParts) > 0 {
+		sql.WriteString(" WHERE ")
+		args, err = appendToSql(d.WhereParts, sql, " AND ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if len(d.OrderBys) > 0 {
+		sql.WriteString(" ORDER BY ")
+		sql.WriteString(strings.Join(d.OrderBys, ", "))
+	}
+
+	if len(d.Limit) > 0 {
+		sql.WriteString(" LIMIT ")
+		sql.WriteString(d.Limit)
+	}
+
+	if len(d.Offset) > 0 {
+		sql.WriteString(" OFFSET ")
+		sql.WriteString(d.Offset)
+	}
+
+	if len(d.Suffixes) > 0 {
+		sql.WriteString(" ")
+		args, err = appendToSql(d.Suffixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	sqlStr, err = d.PlaceholderFormat.ReplacePlaceholders(sql.String())
+	return
+}
+
+// Builder
+
+// DeleteBuilder builds SQL DELETE statements.
+type DeleteBuilder builder.Builder
+
+func init() {
+	builder.Register(DeleteBuilder{}, deleteData{})
+}
+
+// Format methods
+
+// PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the
+// query.
+func (b DeleteBuilder) PlaceholderFormat(f PlaceholderFormat) DeleteBuilder {
+	return builder.Set(b, "PlaceholderFormat", f).(DeleteBuilder)
+}
+
+// Runner methods
+
+// RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.
+func (b DeleteBuilder) RunWith(runner BaseRunner) DeleteBuilder {
+	return setRunWith(b, runner).(DeleteBuilder)
+}
+
+// Exec builds and Execs the query with the Runner set by RunWith.
+func (b DeleteBuilder) Exec() (sql.Result, error) {
+	data := builder.GetStruct(b).(deleteData)
+	return data.Exec()
+}
+
+// SQL methods
+
+// ToSql builds the query into a SQL string and bound args.
+func (b DeleteBuilder) ToSql() (string, []interface{}, error) {
+	data := builder.GetStruct(b).(deleteData)
+	return data.ToSql()
+}
+
+// Prefix adds an expression to the beginning of the query
+func (b DeleteBuilder) Prefix(sql string, args ...interface{}) DeleteBuilder {
+	return b.PrefixExpr(Expr(sql, args...))
+}
+
+// PrefixExpr adds an expression to the very beginning of the query
+func (b DeleteBuilder) PrefixExpr(expr Sqlizer) DeleteBuilder {
+	return builder.Append(b, "Prefixes", expr).(DeleteBuilder)
+}
+
+// From sets the table to be deleted from.
+func (b DeleteBuilder) From(from string) DeleteBuilder {
+	return builder.Set(b, "From", from).(DeleteBuilder)
+}
+
+// Where adds WHERE expressions to the query.
+//
+// See SelectBuilder.Where for more information.
+func (b DeleteBuilder) Where(pred interface{}, args ...interface{}) DeleteBuilder {
+	return builder.Append(b, "WhereParts", newWherePart(pred, args...)).(DeleteBuilder)
+}
+
+// OrderBy adds ORDER BY expressions to the query.
+func (b DeleteBuilder) OrderBy(orderBys ...string) DeleteBuilder {
+	return builder.Extend(b, "OrderBys", orderBys).(DeleteBuilder)
+}
+
+// Limit sets a LIMIT clause on the query.
+func (b DeleteBuilder) Limit(limit uint64) DeleteBuilder {
+	return builder.Set(b, "Limit", fmt.Sprintf("%d", limit)).(DeleteBuilder)
+}
+
+// Offset sets a OFFSET clause on the query.
+func (b DeleteBuilder) Offset(offset uint64) DeleteBuilder {
+	return builder.Set(b, "Offset", fmt.Sprintf("%d", offset)).(DeleteBuilder)
+}
+
+// Suffix adds an expression to the end of the query
+func (b DeleteBuilder) Suffix(sql string, args ...interface{}) DeleteBuilder {
+	return b.SuffixExpr(Expr(sql, args...))
+}
+
+// SuffixExpr adds an expression to the end of the query
+func (b DeleteBuilder) SuffixExpr(expr Sqlizer) DeleteBuilder {
+	return builder.Append(b, "Suffixes", expr).(DeleteBuilder)
+}
+
+func (b DeleteBuilder) Query() (*sql.Rows, error) {
+	data := builder.GetStruct(b).(deleteData)
+	return data.Query()
+}
+
+func (d *deleteData) Query() (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return QueryWith(d.RunWith, d)
+}

server/vendor/github.com/Masterminds/squirrel/delete_ctx.go

@@ -0,0 +1,69 @@
+// +build go1.8
+
+package squirrel
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/lann/builder"
+)
+
+func (d *deleteData) ExecContext(ctx context.Context) (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(ExecerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return ExecContextWith(ctx, ctxRunner, d)
+}
+
+func (d *deleteData) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(QueryerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return QueryContextWith(ctx, ctxRunner, d)
+}
+
+func (d *deleteData) QueryRowContext(ctx context.Context) RowScanner {
+	if d.RunWith == nil {
+		return &Row{err: RunnerNotSet}
+	}
+	queryRower, ok := d.RunWith.(QueryRowerContext)
+	if !ok {
+		if _, ok := d.RunWith.(QueryerContext); !ok {
+			return &Row{err: RunnerNotQueryRunner}
+		}
+		return &Row{err: NoContextSupport}
+	}
+	return QueryRowContextWith(ctx, queryRower, d)
+}
+
+// ExecContext builds and ExecContexts the query with the Runner set by RunWith.
+func (b DeleteBuilder) ExecContext(ctx context.Context) (sql.Result, error) {
+	data := builder.GetStruct(b).(deleteData)
+	return data.ExecContext(ctx)
+}
+
+// QueryContext builds and QueryContexts the query with the Runner set by RunWith.
+func (b DeleteBuilder) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	data := builder.GetStruct(b).(deleteData)
+	return data.QueryContext(ctx)
+}
+
+// QueryRowContext builds and QueryRowContexts the query with the Runner set by RunWith.
+func (b DeleteBuilder) QueryRowContext(ctx context.Context) RowScanner {
+	data := builder.GetStruct(b).(deleteData)
+	return data.QueryRowContext(ctx)
+}
+
+// ScanContext is a shortcut for QueryRowContext().Scan.
+func (b DeleteBuilder) ScanContext(ctx context.Context, dest ...interface{}) error {
+	return b.QueryRowContext(ctx).Scan(dest...)
+}

server/vendor/github.com/Masterminds/squirrel/expr.go

@@ -0,0 +1,419 @@
+package squirrel
+
+import (
+	"bytes"
+	"database/sql/driver"
+	"fmt"
+	"reflect"
+	"sort"
+	"strings"
+)
+
+const (
+	// Portable true/false literals.
+	sqlTrue  = "(1=1)"
+	sqlFalse = "(1=0)"
+)
+
+type expr struct {
+	sql  string
+	args []interface{}
+}
+
+// Expr builds an expression from a SQL fragment and arguments.
+//
+// Ex:
+//     Expr("FROM_UNIXTIME(?)", t)
+func Expr(sql string, args ...interface{}) Sqlizer {
+	return expr{sql: sql, args: args}
+}
+
+func (e expr) ToSql() (sql string, args []interface{}, err error) {
+	simple := true
+	for _, arg := range e.args {
+		if _, ok := arg.(Sqlizer); ok {
+			simple = false
+		}
+	}
+	if simple {
+		return e.sql, e.args, nil
+	}
+
+	buf := &bytes.Buffer{}
+	ap := e.args
+	sp := e.sql
+
+	var isql string
+	var iargs []interface{}
+
+	for err == nil && len(ap) > 0 && len(sp) > 0 {
+		i := strings.Index(sp, "?")
+		if i < 0 {
+			// no more placeholders
+			break
+		}
+		if len(sp) > i+1 && sp[i+1:i+2] == "?" {
+			// escaped "??"; append it and step past
+			buf.WriteString(sp[:i+2])
+			sp = sp[i+2:]
+			continue
+		}
+
+		if as, ok := ap[0].(Sqlizer); ok {
+			// sqlizer argument; expand it and append the result
+			isql, iargs, err = as.ToSql()
+			buf.WriteString(sp[:i])
+			buf.WriteString(isql)
+			args = append(args, iargs...)
+		} else {
+			// normal argument; append it and the placeholder
+			buf.WriteString(sp[:i+1])
+			args = append(args, ap[0])
+		}
+
+		// step past the argument and placeholder
+		ap = ap[1:]
+		sp = sp[i+1:]
+	}
+
+	// append the remaining sql and arguments
+	buf.WriteString(sp)
+	return buf.String(), append(args, ap...), err
+}
+
+type concatExpr []interface{}
+
+func (ce concatExpr) ToSql() (sql string, args []interface{}, err error) {
+	for _, part := range ce {
+		switch p := part.(type) {
+		case string:
+			sql += p
+		case Sqlizer:
+			pSql, pArgs, err := p.ToSql()
+			if err != nil {
+				return "", nil, err
+			}
+			sql += pSql
+			args = append(args, pArgs...)
+		default:
+			return "", nil, fmt.Errorf("%#v is not a string or Sqlizer", part)
+		}
+	}
+	return
+}
+
+// ConcatExpr builds an expression by concatenating strings and other expressions.
+//
+// Ex:
+//     name_expr := Expr("CONCAT(?, ' ', ?)", firstName, lastName)
+//     ConcatExpr("COALESCE(full_name,", name_expr, ")")
+func ConcatExpr(parts ...interface{}) concatExpr {
+	return concatExpr(parts)
+}
+
+// aliasExpr helps to alias part of SQL query generated with underlying "expr"
+type aliasExpr struct {
+	expr  Sqlizer
+	alias string
+}
+
+// Alias allows to define alias for column in SelectBuilder. Useful when column is
+// defined as complex expression like IF or CASE
+// Ex:
+//		.Column(Alias(caseStmt, "case_column"))
+func Alias(expr Sqlizer, alias string) aliasExpr {
+	return aliasExpr{expr, alias}
+}
+
+func (e aliasExpr) ToSql() (sql string, args []interface{}, err error) {
+	sql, args, err = e.expr.ToSql()
+	if err == nil {
+		sql = fmt.Sprintf("(%s) AS %s", sql, e.alias)
+	}
+	return
+}
+
+// Eq is syntactic sugar for use with Where/Having/Set methods.
+type Eq map[string]interface{}
+
+func (eq Eq) toSQL(useNotOpr bool) (sql string, args []interface{}, err error) {
+	if len(eq) == 0 {
+		// Empty Sql{} evaluates to true.
+		sql = sqlTrue
+		return
+	}
+
+	var (
+		exprs       []string
+		equalOpr    = "="
+		inOpr       = "IN"
+		nullOpr     = "IS"
+		inEmptyExpr = sqlFalse
+	)
+
+	if useNotOpr {
+		equalOpr = "<>"
+		inOpr = "NOT IN"
+		nullOpr = "IS NOT"
+		inEmptyExpr = sqlTrue
+	}
+
+	sortedKeys := getSortedKeys(eq)
+	for _, key := range sortedKeys {
+		var expr string
+		val := eq[key]
+
+		switch v := val.(type) {
+		case driver.Valuer:
+			if val, err = v.Value(); err != nil {
+				return
+			}
+		}
+
+		r := reflect.ValueOf(val)
+		if r.Kind() == reflect.Ptr {
+			if r.IsNil() {
+				val = nil
+			} else {
+				val = r.Elem().Interface()
+			}
+		}
+
+		if val == nil {
+			expr = fmt.Sprintf("%s %s NULL", key, nullOpr)
+		} else {
+			if isListType(val) {
+				valVal := reflect.ValueOf(val)
+				if valVal.Len() == 0 {
+					expr = inEmptyExpr
+					if args == nil {
+						args = []interface{}{}
+					}
+				} else {
+					for i := 0; i < valVal.Len(); i++ {
+						args = append(args, valVal.Index(i).Interface())
+					}
+					expr = fmt.Sprintf("%s %s (%s)", key, inOpr, Placeholders(valVal.Len()))
+				}
+			} else {
+				expr = fmt.Sprintf("%s %s ?", key, equalOpr)
+				args = append(args, val)
+			}
+		}
+		exprs = append(exprs, expr)
+	}
+	sql = strings.Join(exprs, " AND ")
+	return
+}
+
+func (eq Eq) ToSql() (sql string, args []interface{}, err error) {
+	return eq.toSQL(false)
+}
+
+// NotEq is syntactic sugar for use with Where/Having/Set methods.
+// Ex:
+//     .Where(NotEq{"id": 1}) == "id <> 1"
+type NotEq Eq
+
+func (neq NotEq) ToSql() (sql string, args []interface{}, err error) {
+	return Eq(neq).toSQL(true)
+}
+
+// Like is syntactic sugar for use with LIKE conditions.
+// Ex:
+//     .Where(Like{"name": "%irrel"})
+type Like map[string]interface{}
+
+func (lk Like) toSql(opr string) (sql string, args []interface{}, err error) {
+	var exprs []string
+	for key, val := range lk {
+		expr := ""
+
+		switch v := val.(type) {
+		case driver.Valuer:
+			if val, err = v.Value(); err != nil {
+				return
+			}
+		}
+
+		if val == nil {
+			err = fmt.Errorf("cannot use null with like operators")
+			return
+		} else {
+			if isListType(val) {
+				err = fmt.Errorf("cannot use array or slice with like operators")
+				return
+			} else {
+				expr = fmt.Sprintf("%s %s ?", key, opr)
+				args = append(args, val)
+			}
+		}
+		exprs = append(exprs, expr)
+	}
+	sql = strings.Join(exprs, " AND ")
+	return
+}
+
+func (lk Like) ToSql() (sql string, args []interface{}, err error) {
+	return lk.toSql("LIKE")
+}
+
+// NotLike is syntactic sugar for use with LIKE conditions.
+// Ex:
+//     .Where(NotLike{"name": "%irrel"})
+type NotLike Like
+
+func (nlk NotLike) ToSql() (sql string, args []interface{}, err error) {
+	return Like(nlk).toSql("NOT LIKE")
+}
+
+// ILike is syntactic sugar for use with ILIKE conditions.
+// Ex:
+//    .Where(ILike{"name": "sq%"})
+type ILike Like
+
+func (ilk ILike) ToSql() (sql string, args []interface{}, err error) {
+	return Like(ilk).toSql("ILIKE")
+}
+
+// NotILike is syntactic sugar for use with ILIKE conditions.
+// Ex:
+//    .Where(NotILike{"name": "sq%"})
+type NotILike Like
+
+func (nilk NotILike) ToSql() (sql string, args []interface{}, err error) {
+	return Like(nilk).toSql("NOT ILIKE")
+}
+
+// Lt is syntactic sugar for use with Where/Having/Set methods.
+// Ex:
+//     .Where(Lt{"id": 1})
+type Lt map[string]interface{}
+
+func (lt Lt) toSql(opposite, orEq bool) (sql string, args []interface{}, err error) {
+	var (
+		exprs []string
+		opr   = "<"
+	)
+
+	if opposite {
+		opr = ">"
+	}
+
+	if orEq {
+		opr = fmt.Sprintf("%s%s", opr, "=")
+	}
+
+	sortedKeys := getSortedKeys(lt)
+	for _, key := range sortedKeys {
+		var expr string
+		val := lt[key]
+
+		switch v := val.(type) {
+		case driver.Valuer:
+			if val, err = v.Value(); err != nil {
+				return
+			}
+		}
+
+		if val == nil {
+			err = fmt.Errorf("cannot use null with less than or greater than operators")
+			return
+		}
+		if isListType(val) {
+			err = fmt.Errorf("cannot use array or slice with less than or greater than operators")
+			return
+		}
+		expr = fmt.Sprintf("%s %s ?", key, opr)
+		args = append(args, val)
+
+		exprs = append(exprs, expr)
+	}
+	sql = strings.Join(exprs, " AND ")
+	return
+}
+
+func (lt Lt) ToSql() (sql string, args []interface{}, err error) {
+	return lt.toSql(false, false)
+}
+
+// LtOrEq is syntactic sugar for use with Where/Having/Set methods.
+// Ex:
+//     .Where(LtOrEq{"id": 1}) == "id <= 1"
+type LtOrEq Lt
+
+func (ltOrEq LtOrEq) ToSql() (sql string, args []interface{}, err error) {
+	return Lt(ltOrEq).toSql(false, true)
+}
+
+// Gt is syntactic sugar for use with Where/Having/Set methods.
+// Ex:
+//     .Where(Gt{"id": 1}) == "id > 1"
+type Gt Lt
+
+func (gt Gt) ToSql() (sql string, args []interface{}, err error) {
+	return Lt(gt).toSql(true, false)
+}
+
+// GtOrEq is syntactic sugar for use with Where/Having/Set methods.
+// Ex:
+//     .Where(GtOrEq{"id": 1}) == "id >= 1"
+type GtOrEq Lt
+
+func (gtOrEq GtOrEq) ToSql() (sql string, args []interface{}, err error) {
+	return Lt(gtOrEq).toSql(true, true)
+}
+
+type conj []Sqlizer
+
+func (c conj) join(sep, defaultExpr string) (sql string, args []interface{}, err error) {
+	if len(c) == 0 {
+		return defaultExpr, []interface{}{}, nil
+	}
+	var sqlParts []string
+	for _, sqlizer := range c {
+		partSQL, partArgs, err := sqlizer.ToSql()
+		if err != nil {
+			return "", nil, err
+		}
+		if partSQL != "" {
+			sqlParts = append(sqlParts, partSQL)
+			args = append(args, partArgs...)
+		}
+	}
+	if len(sqlParts) > 0 {
+		sql = fmt.Sprintf("(%s)", strings.Join(sqlParts, sep))
+	}
+	return
+}
+
+// And conjunction Sqlizers
+type And conj
+
+func (a And) ToSql() (string, []interface{}, error) {
+	return conj(a).join(" AND ", sqlTrue)
+}
+
+// Or conjunction Sqlizers
+type Or conj
+
+func (o Or) ToSql() (string, []interface{}, error) {
+	return conj(o).join(" OR ", sqlFalse)
+}
+
+func getSortedKeys(exp map[string]interface{}) []string {
+	sortedKeys := make([]string, 0, len(exp))
+	for k := range exp {
+		sortedKeys = append(sortedKeys, k)
+	}
+	sort.Strings(sortedKeys)
+	return sortedKeys
+}
+
+func isListType(val interface{}) bool {
+	if driver.IsValue(val) {
+		return false
+	}
+	valVal := reflect.ValueOf(val)
+	return valVal.Kind() == reflect.Array || valVal.Kind() == reflect.Slice
+}

server/vendor/github.com/Masterminds/squirrel/insert.go

@@ -0,0 +1,288 @@
+package squirrel
+
+import (
+	"bytes"
+	"database/sql"
+	"errors"
+	"fmt"
+	"io"
+	"sort"
+	"strings"
+
+	"github.com/lann/builder"
+)
+
+type insertData struct {
+	PlaceholderFormat PlaceholderFormat
+	RunWith           BaseRunner
+	Prefixes          []Sqlizer
+	StatementKeyword  string
+	Options           []string
+	Into              string
+	Columns           []string
+	Values            [][]interface{}
+	Suffixes          []Sqlizer
+	Select            *SelectBuilder
+}
+
+func (d *insertData) Exec() (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return ExecWith(d.RunWith, d)
+}
+
+func (d *insertData) Query() (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return QueryWith(d.RunWith, d)
+}
+
+func (d *insertData) QueryRow() RowScanner {
+	if d.RunWith == nil {
+		return &Row{err: RunnerNotSet}
+	}
+	queryRower, ok := d.RunWith.(QueryRower)
+	if !ok {
+		return &Row{err: RunnerNotQueryRunner}
+	}
+	return QueryRowWith(queryRower, d)
+}
+
+func (d *insertData) ToSql() (sqlStr string, args []interface{}, err error) {
+	if len(d.Into) == 0 {
+		err = errors.New("insert statements must specify a table")
+		return
+	}
+	if len(d.Values) == 0 && d.Select == nil {
+		err = errors.New("insert statements must have at least one set of values or select clause")
+		return
+	}
+
+	sql := &bytes.Buffer{}
+
+	if len(d.Prefixes) > 0 {
+		args, err = appendToSql(d.Prefixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+
+		sql.WriteString(" ")
+	}
+
+	if d.StatementKeyword == "" {
+		sql.WriteString("INSERT ")
+	} else {
+		sql.WriteString(d.StatementKeyword)
+		sql.WriteString(" ")
+	}
+
+	if len(d.Options) > 0 {
+		sql.WriteString(strings.Join(d.Options, " "))
+		sql.WriteString(" ")
+	}
+
+	sql.WriteString("INTO ")
+	sql.WriteString(d.Into)
+	sql.WriteString(" ")
+
+	if len(d.Columns) > 0 {
+		sql.WriteString("(")
+		sql.WriteString(strings.Join(d.Columns, ","))
+		sql.WriteString(") ")
+	}
+
+	if d.Select != nil {
+		args, err = d.appendSelectToSQL(sql, args)
+	} else {
+		args, err = d.appendValuesToSQL(sql, args)
+	}
+	if err != nil {
+		return
+	}
+
+	if len(d.Suffixes) > 0 {
+		sql.WriteString(" ")
+		args, err = appendToSql(d.Suffixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	sqlStr, err = d.PlaceholderFormat.ReplacePlaceholders(sql.String())
+	return
+}
+
+func (d *insertData) appendValuesToSQL(w io.Writer, args []interface{}) ([]interface{}, error) {
+	if len(d.Values) == 0 {
+		return args, errors.New("values for insert statements are not set")
+	}
+
+	io.WriteString(w, "VALUES ")
+
+	valuesStrings := make([]string, len(d.Values))
+	for r, row := range d.Values {
+		valueStrings := make([]string, len(row))
+		for v, val := range row {
+			if vs, ok := val.(Sqlizer); ok {
+				vsql, vargs, err := vs.ToSql()
+				if err != nil {
+					return nil, err
+				}
+				valueStrings[v] = vsql
+				args = append(args, vargs...)
+			} else {
+				valueStrings[v] = "?"
+				args = append(args, val)
+			}
+		}
+		valuesStrings[r] = fmt.Sprintf("(%s)", strings.Join(valueStrings, ","))
+	}
+
+	io.WriteString(w, strings.Join(valuesStrings, ","))
+
+	return args, nil
+}
+
+func (d *insertData) appendSelectToSQL(w io.Writer, args []interface{}) ([]interface{}, error) {
+	if d.Select == nil {
+		return args, errors.New("select clause for insert statements are not set")
+	}
+
+	selectClause, sArgs, err := d.Select.ToSql()
+	if err != nil {
+		return args, err
+	}
+
+	io.WriteString(w, selectClause)
+	args = append(args, sArgs...)
+
+	return args, nil
+}
+
+// Builder
+
+// InsertBuilder builds SQL INSERT statements.
+type InsertBuilder builder.Builder
+
+func init() {
+	builder.Register(InsertBuilder{}, insertData{})
+}
+
+// Format methods
+
+// PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the
+// query.
+func (b InsertBuilder) PlaceholderFormat(f PlaceholderFormat) InsertBuilder {
+	return builder.Set(b, "PlaceholderFormat", f).(InsertBuilder)
+}
+
+// Runner methods
+
+// RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.
+func (b InsertBuilder) RunWith(runner BaseRunner) InsertBuilder {
+	return setRunWith(b, runner).(InsertBuilder)
+}
+
+// Exec builds and Execs the query with the Runner set by RunWith.
+func (b InsertBuilder) Exec() (sql.Result, error) {
+	data := builder.GetStruct(b).(insertData)
+	return data.Exec()
+}
+
+// Query builds and Querys the query with the Runner set by RunWith.
+func (b InsertBuilder) Query() (*sql.Rows, error) {
+	data := builder.GetStruct(b).(insertData)
+	return data.Query()
+}
+
+// QueryRow builds and QueryRows the query with the Runner set by RunWith.
+func (b InsertBuilder) QueryRow() RowScanner {
+	data := builder.GetStruct(b).(insertData)
+	return data.QueryRow()
+}
+
+// Scan is a shortcut for QueryRow().Scan.
+func (b InsertBuilder) Scan(dest ...interface{}) error {
+	return b.QueryRow().Scan(dest...)
+}
+
+// SQL methods
+
+// ToSql builds the query into a SQL string and bound args.
+func (b InsertBuilder) ToSql() (string, []interface{}, error) {
+	data := builder.GetStruct(b).(insertData)
+	return data.ToSql()
+}
+
+// Prefix adds an expression to the beginning of the query
+func (b InsertBuilder) Prefix(sql string, args ...interface{}) InsertBuilder {
+	return b.PrefixExpr(Expr(sql, args...))
+}
+
+// PrefixExpr adds an expression to the very beginning of the query
+func (b InsertBuilder) PrefixExpr(expr Sqlizer) InsertBuilder {
+	return builder.Append(b, "Prefixes", expr).(InsertBuilder)
+}
+
+// Options adds keyword options before the INTO clause of the query.
+func (b InsertBuilder) Options(options ...string) InsertBuilder {
+	return builder.Extend(b, "Options", options).(InsertBuilder)
+}
+
+// Into sets the INTO clause of the query.
+func (b InsertBuilder) Into(from string) InsertBuilder {
+	return builder.Set(b, "Into", from).(InsertBuilder)
+}
+
+// Columns adds insert columns to the query.
+func (b InsertBuilder) Columns(columns ...string) InsertBuilder {
+	return builder.Extend(b, "Columns", columns).(InsertBuilder)
+}
+
+// Values adds a single row's values to the query.
+func (b InsertBuilder) Values(values ...interface{}) InsertBuilder {
+	return builder.Append(b, "Values", values).(InsertBuilder)
+}
+
+// Suffix adds an expression to the end of the query
+func (b InsertBuilder) Suffix(sql string, args ...interface{}) InsertBuilder {
+	return b.SuffixExpr(Expr(sql, args...))
+}
+
+// SuffixExpr adds an expression to the end of the query
+func (b InsertBuilder) SuffixExpr(expr Sqlizer) InsertBuilder {
+	return builder.Append(b, "Suffixes", expr).(InsertBuilder)
+}
+
+// SetMap set columns and values for insert builder from a map of column name and value
+// note that it will reset all previous columns and values was set if any
+func (b InsertBuilder) SetMap(clauses map[string]interface{}) InsertBuilder {
+	// Keep the columns in a consistent order by sorting the column key string.
+	cols := make([]string, 0, len(clauses))
+	for col := range clauses {
+		cols = append(cols, col)
+	}
+	sort.Strings(cols)
+
+	vals := make([]interface{}, 0, len(clauses))
+	for _, col := range cols {
+		vals = append(vals, clauses[col])
+	}
+
+	b = builder.Set(b, "Columns", cols).(InsertBuilder)
+	b = builder.Set(b, "Values", [][]interface{}{vals}).(InsertBuilder)
+
+	return b
+}
+
+// Select set Select clause for insert query
+// If Values and Select are used, then Select has higher priority
+func (b InsertBuilder) Select(sb SelectBuilder) InsertBuilder {
+	return builder.Set(b, "Select", &sb).(InsertBuilder)
+}
+
+func (b InsertBuilder) statementKeyword(keyword string) InsertBuilder {
+	return builder.Set(b, "StatementKeyword", keyword).(InsertBuilder)
+}

server/vendor/github.com/Masterminds/squirrel/insert_ctx.go

@@ -0,0 +1,69 @@
+// +build go1.8
+
+package squirrel
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/lann/builder"
+)
+
+func (d *insertData) ExecContext(ctx context.Context) (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(ExecerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return ExecContextWith(ctx, ctxRunner, d)
+}
+
+func (d *insertData) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(QueryerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return QueryContextWith(ctx, ctxRunner, d)
+}
+
+func (d *insertData) QueryRowContext(ctx context.Context) RowScanner {
+	if d.RunWith == nil {
+		return &Row{err: RunnerNotSet}
+	}
+	queryRower, ok := d.RunWith.(QueryRowerContext)
+	if !ok {
+		if _, ok := d.RunWith.(QueryerContext); !ok {
+			return &Row{err: RunnerNotQueryRunner}
+		}
+		return &Row{err: NoContextSupport}
+	}
+	return QueryRowContextWith(ctx, queryRower, d)
+}
+
+// ExecContext builds and ExecContexts the query with the Runner set by RunWith.
+func (b InsertBuilder) ExecContext(ctx context.Context) (sql.Result, error) {
+	data := builder.GetStruct(b).(insertData)
+	return data.ExecContext(ctx)
+}
+
+// QueryContext builds and QueryContexts the query with the Runner set by RunWith.
+func (b InsertBuilder) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	data := builder.GetStruct(b).(insertData)
+	return data.QueryContext(ctx)
+}
+
+// QueryRowContext builds and QueryRowContexts the query with the Runner set by RunWith.
+func (b InsertBuilder) QueryRowContext(ctx context.Context) RowScanner {
+	data := builder.GetStruct(b).(insertData)
+	return data.QueryRowContext(ctx)
+}
+
+// ScanContext is a shortcut for QueryRowContext().Scan.
+func (b InsertBuilder) ScanContext(ctx context.Context, dest ...interface{}) error {
+	return b.QueryRowContext(ctx).Scan(dest...)
+}

server/vendor/github.com/Masterminds/squirrel/part.go

@@ -0,0 +1,55 @@
+package squirrel
+
+import (
+	"fmt"
+	"io"
+)
+
+type part struct {
+	pred interface{}
+	args []interface{}
+}
+
+func newPart(pred interface{}, args ...interface{}) Sqlizer {
+	return &part{pred, args}
+}
+
+func (p part) ToSql() (sql string, args []interface{}, err error) {
+	switch pred := p.pred.(type) {
+	case nil:
+		// no-op
+	case Sqlizer:
+		sql, args, err = pred.ToSql()
+	case string:
+		sql = pred
+		args = p.args
+	default:
+		err = fmt.Errorf("expected string or Sqlizer, not %T", pred)
+	}
+	return
+}
+
+func appendToSql(parts []Sqlizer, w io.Writer, sep string, args []interface{}) ([]interface{}, error) {
+	for i, p := range parts {
+		partSql, partArgs, err := p.ToSql()
+		if err != nil {
+			return nil, err
+		} else if len(partSql) == 0 {
+			continue
+		}
+
+		if i > 0 {
+			_, err := io.WriteString(w, sep)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		_, err = io.WriteString(w, partSql)
+		if err != nil {
+			return nil, err
+		}
+		args = append(args, partArgs...)
+	}
+	return args, nil
+}

server/vendor/github.com/Masterminds/squirrel/placeholder.go

@@ -0,0 +1,114 @@
+package squirrel
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+)
+
+// PlaceholderFormat is the interface that wraps the ReplacePlaceholders method.
+//
+// ReplacePlaceholders takes a SQL statement and replaces each question mark
+// placeholder with a (possibly different) SQL placeholder.
+type PlaceholderFormat interface {
+	ReplacePlaceholders(sql string) (string, error)
+}
+
+type placeholderDebugger interface {
+	debugPlaceholder() string
+}
+
+var (
+	// Question is a PlaceholderFormat instance that leaves placeholders as
+	// question marks.
+	Question = questionFormat{}
+
+	// Dollar is a PlaceholderFormat instance that replaces placeholders with
+	// dollar-prefixed positional placeholders (e.g. $1, $2, $3).
+	Dollar = dollarFormat{}
+
+	// Colon is a PlaceholderFormat instance that replaces placeholders with
+	// colon-prefixed positional placeholders (e.g. :1, :2, :3).
+	Colon = colonFormat{}
+
+	// AtP is a PlaceholderFormat instance that replaces placeholders with
+	// "@p"-prefixed positional placeholders (e.g. @p1, @p2, @p3).
+	AtP = atpFormat{}
+)
+
+type questionFormat struct{}
+
+func (questionFormat) ReplacePlaceholders(sql string) (string, error) {
+	return sql, nil
+}
+
+func (questionFormat) debugPlaceholder() string {
+	return "?"
+}
+
+type dollarFormat struct{}
+
+func (dollarFormat) ReplacePlaceholders(sql string) (string, error) {
+	return replacePositionalPlaceholders(sql, "$")
+}
+
+func (dollarFormat) debugPlaceholder() string {
+	return "$"
+}
+
+type colonFormat struct{}
+
+func (colonFormat) ReplacePlaceholders(sql string) (string, error) {
+	return replacePositionalPlaceholders(sql, ":")
+}
+
+func (colonFormat) debugPlaceholder() string {
+	return ":"
+}
+
+type atpFormat struct{}
+
+func (atpFormat) ReplacePlaceholders(sql string) (string, error) {
+	return replacePositionalPlaceholders(sql, "@p")
+}
+
+func (atpFormat) debugPlaceholder() string {
+	return "@p"
+}
+
+// Placeholders returns a string with count ? placeholders joined with commas.
+func Placeholders(count int) string {
+	if count < 1 {
+		return ""
+	}
+
+	return strings.Repeat(",?", count)[1:]
+}
+
+func replacePositionalPlaceholders(sql, prefix string) (string, error) {
+	buf := &bytes.Buffer{}
+	i := 0
+	for {
+		p := strings.Index(sql, "?")
+		if p == -1 {
+			break
+		}
+
+		if len(sql[p:]) > 1 && sql[p:p+2] == "??" { // escape ?? => ?
+			buf.WriteString(sql[:p])
+			buf.WriteString("?")
+			if len(sql[p:]) == 1 {
+				break
+			}
+			sql = sql[p+2:]
+		} else {
+			i++
+			buf.WriteString(sql[:p])
+			fmt.Fprintf(buf, "%s%d", prefix, i)
+			sql = sql[p+1:]
+		}
+	}
+
+	buf.WriteString(sql)
+	return buf.String(), nil
+}

server/vendor/github.com/Masterminds/squirrel/row.go

@@ -0,0 +1,22 @@
+package squirrel
+
+// RowScanner is the interface that wraps the Scan method.
+//
+// Scan behaves like database/sql.Row.Scan.
+type RowScanner interface {
+	Scan(...interface{}) error
+}
+
+// Row wraps database/sql.Row to let squirrel return new errors on Scan.
+type Row struct {
+	RowScanner
+	err error
+}
+
+// Scan returns Row.err or calls RowScanner.Scan.
+func (r *Row) Scan(dest ...interface{}) error {
+	if r.err != nil {
+		return r.err
+	}
+	return r.RowScanner.Scan(dest...)
+}

server/vendor/github.com/Masterminds/squirrel/select.go

@@ -0,0 +1,398 @@
+package squirrel
+
+import (
+	"bytes"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/lann/builder"
+)
+
+type selectData struct {
+	PlaceholderFormat PlaceholderFormat
+	RunWith           BaseRunner
+	Prefixes          []Sqlizer
+	Options           []string
+	Columns           []Sqlizer
+	From              Sqlizer
+	Joins             []Sqlizer
+	WhereParts        []Sqlizer
+	GroupBys          []string
+	HavingParts       []Sqlizer
+	OrderByParts      []Sqlizer
+	Limit             string
+	Offset            string
+	Suffixes          []Sqlizer
+}
+
+func (d *selectData) Exec() (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return ExecWith(d.RunWith, d)
+}
+
+func (d *selectData) Query() (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return QueryWith(d.RunWith, d)
+}
+
+func (d *selectData) QueryRow() RowScanner {
+	if d.RunWith == nil {
+		return &Row{err: RunnerNotSet}
+	}
+	queryRower, ok := d.RunWith.(QueryRower)
+	if !ok {
+		return &Row{err: RunnerNotQueryRunner}
+	}
+	return QueryRowWith(queryRower, d)
+}
+
+func (d *selectData) ToSql() (sqlStr string, args []interface{}, err error) {
+	sqlStr, args, err = d.toSql()
+	if err != nil {
+		return
+	}
+
+	sqlStr, err = d.PlaceholderFormat.ReplacePlaceholders(sqlStr)
+	return
+}
+
+func (d *selectData) toSqlRaw() (sqlStr string, args []interface{}, err error) {
+	return d.toSql()
+}
+
+func (d *selectData) toSql() (sqlStr string, args []interface{}, err error) {
+	if len(d.Columns) == 0 {
+		err = fmt.Errorf("select statements must have at least one result column")
+		return
+	}
+
+	sql := &bytes.Buffer{}
+
+	if len(d.Prefixes) > 0 {
+		args, err = appendToSql(d.Prefixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+
+		sql.WriteString(" ")
+	}
+
+	sql.WriteString("SELECT ")
+
+	if len(d.Options) > 0 {
+		sql.WriteString(strings.Join(d.Options, " "))
+		sql.WriteString(" ")
+	}
+
+	if len(d.Columns) > 0 {
+		args, err = appendToSql(d.Columns, sql, ", ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if d.From != nil {
+		sql.WriteString(" FROM ")
+		args, err = appendToSql([]Sqlizer{d.From}, sql, "", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if len(d.Joins) > 0 {
+		sql.WriteString(" ")
+		args, err = appendToSql(d.Joins, sql, " ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if len(d.WhereParts) > 0 {
+		sql.WriteString(" WHERE ")
+		args, err = appendToSql(d.WhereParts, sql, " AND ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if len(d.GroupBys) > 0 {
+		sql.WriteString(" GROUP BY ")
+		sql.WriteString(strings.Join(d.GroupBys, ", "))
+	}
+
+	if len(d.HavingParts) > 0 {
+		sql.WriteString(" HAVING ")
+		args, err = appendToSql(d.HavingParts, sql, " AND ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if len(d.OrderByParts) > 0 {
+		sql.WriteString(" ORDER BY ")
+		args, err = appendToSql(d.OrderByParts, sql, ", ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if len(d.Limit) > 0 {
+		sql.WriteString(" LIMIT ")
+		sql.WriteString(d.Limit)
+	}
+
+	if len(d.Offset) > 0 {
+		sql.WriteString(" OFFSET ")
+		sql.WriteString(d.Offset)
+	}
+
+	if len(d.Suffixes) > 0 {
+		sql.WriteString(" ")
+
+		args, err = appendToSql(d.Suffixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	sqlStr = sql.String()
+	return
+}
+
+// Builder
+
+// SelectBuilder builds SQL SELECT statements.
+type SelectBuilder builder.Builder
+
+func init() {
+	builder.Register(SelectBuilder{}, selectData{})
+}
+
+// Format methods
+
+// PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the
+// query.
+func (b SelectBuilder) PlaceholderFormat(f PlaceholderFormat) SelectBuilder {
+	return builder.Set(b, "PlaceholderFormat", f).(SelectBuilder)
+}
+
+// Runner methods
+
+// RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.
+// For most cases runner will be a database connection.
+//
+// Internally we use this to mock out the database connection for testing.
+func (b SelectBuilder) RunWith(runner BaseRunner) SelectBuilder {
+	return setRunWith(b, runner).(SelectBuilder)
+}
+
+// Exec builds and Execs the query with the Runner set by RunWith.
+func (b SelectBuilder) Exec() (sql.Result, error) {
+	data := builder.GetStruct(b).(selectData)
+	return data.Exec()
+}
+
+// Query builds and Querys the query with the Runner set by RunWith.
+func (b SelectBuilder) Query() (*sql.Rows, error) {
+	data := builder.GetStruct(b).(selectData)
+	return data.Query()
+}
+
+// QueryRow builds and QueryRows the query with the Runner set by RunWith.
+func (b SelectBuilder) QueryRow() RowScanner {
+	data := builder.GetStruct(b).(selectData)
+	return data.QueryRow()
+}
+
+// Scan is a shortcut for QueryRow().Scan.
+func (b SelectBuilder) Scan(dest ...interface{}) error {
+	return b.QueryRow().Scan(dest...)
+}
+
+// SQL methods
+
+// ToSql builds the query into a SQL string and bound args.
+func (b SelectBuilder) ToSql() (string, []interface{}, error) {
+	data := builder.GetStruct(b).(selectData)
+	return data.ToSql()
+}
+
+func (b SelectBuilder) MustSql() (string, []interface{}) {
+	sql, args, err := b.ToSql()
+	if err != nil {
+		panic(err)
+	}
+	return sql, args
+}
+
+func (b SelectBuilder) toSqlRaw() (string, []interface{}, error) {
+	data := builder.GetStruct(b).(selectData)
+	return data.toSqlRaw()
+}
+
+// Prefix adds an expression to the beginning of the query
+func (b SelectBuilder) Prefix(sql string, args ...interface{}) SelectBuilder {
+	return b.PrefixExpr(Expr(sql, args...))
+}
+
+// PrefixExpr adds an expression to the very beginning of the query
+func (b SelectBuilder) PrefixExpr(expr Sqlizer) SelectBuilder {
+	return builder.Append(b, "Prefixes", expr).(SelectBuilder)
+}
+
+// Distinct adds a DISTINCT clause to the query.
+func (b SelectBuilder) Distinct() SelectBuilder {
+	return b.Options("DISTINCT")
+}
+
+// Options adds select option to the query
+func (b SelectBuilder) Options(options ...string) SelectBuilder {
+	return builder.Extend(b, "Options", options).(SelectBuilder)
+}
+
+// Columns adds result columns to the query.
+func (b SelectBuilder) Columns(columns ...string) SelectBuilder {
+	parts := make([]interface{}, 0, len(columns))
+	for _, str := range columns {
+		parts = append(parts, newPart(str))
+	}
+	return builder.Extend(b, "Columns", parts).(SelectBuilder)
+}
+
+// Column adds a result column to the query.
+// Unlike Columns, Column accepts args which will be bound to placeholders in
+// the columns string, for example:
+//   Column("IF(col IN ("+squirrel.Placeholders(3)+"), 1, 0) as col", 1, 2, 3)
+func (b SelectBuilder) Column(column interface{}, args ...interface{}) SelectBuilder {
+	return builder.Append(b, "Columns", newPart(column, args...)).(SelectBuilder)
+}
+
+// From sets the FROM clause of the query.
+func (b SelectBuilder) From(from string) SelectBuilder {
+	return builder.Set(b, "From", newPart(from)).(SelectBuilder)
+}
+
+// FromSelect sets a subquery into the FROM clause of the query.
+func (b SelectBuilder) FromSelect(from SelectBuilder, alias string) SelectBuilder {
+	// Prevent misnumbered parameters in nested selects (#183).
+	from = from.PlaceholderFormat(Question)
+	return builder.Set(b, "From", Alias(from, alias)).(SelectBuilder)
+}
+
+// JoinClause adds a join clause to the query.
+func (b SelectBuilder) JoinClause(pred interface{}, args ...interface{}) SelectBuilder {
+	return builder.Append(b, "Joins", newPart(pred, args...)).(SelectBuilder)
+}
+
+// Join adds a JOIN clause to the query.
+func (b SelectBuilder) Join(join string, rest ...interface{}) SelectBuilder {
+	return b.JoinClause("JOIN "+join, rest...)
+}
+
+// LeftJoin adds a LEFT JOIN clause to the query.
+func (b SelectBuilder) LeftJoin(join string, rest ...interface{}) SelectBuilder {
+	return b.JoinClause("LEFT JOIN "+join, rest...)
+}
+
+// RightJoin adds a RIGHT JOIN clause to the query.
+func (b SelectBuilder) RightJoin(join string, rest ...interface{}) SelectBuilder {
+	return b.JoinClause("RIGHT JOIN "+join, rest...)
+}
+
+// InnerJoin adds a INNER JOIN clause to the query.
+func (b SelectBuilder) InnerJoin(join string, rest ...interface{}) SelectBuilder {
+	return b.JoinClause("INNER JOIN "+join, rest...)
+}
+
+// CrossJoin adds a CROSS JOIN clause to the query.
+func (b SelectBuilder) CrossJoin(join string, rest ...interface{}) SelectBuilder {
+	return b.JoinClause("CROSS JOIN "+join, rest...)
+}
+
+// Where adds an expression to the WHERE clause of the query.
+//
+// Expressions are ANDed together in the generated SQL.
+//
+// Where accepts several types for its pred argument:
+//
+// nil OR "" - ignored.
+//
+// string - SQL expression.
+// If the expression has SQL placeholders then a set of arguments must be passed
+// as well, one for each placeholder.
+//
+// map[string]interface{} OR Eq - map of SQL expressions to values. Each key is
+// transformed into an expression like "<key> = ?", with the corresponding value
+// bound to the placeholder. If the value is nil, the expression will be "<key>
+// IS NULL". If the value is an array or slice, the expression will be "<key> IN
+// (?,?,...)", with one placeholder for each item in the value. These expressions
+// are ANDed together.
+//
+// Where will panic if pred isn't any of the above types.
+func (b SelectBuilder) Where(pred interface{}, args ...interface{}) SelectBuilder {
+	if pred == nil || pred == "" {
+		return b
+	}
+	return builder.Append(b, "WhereParts", newWherePart(pred, args...)).(SelectBuilder)
+}
+
+// GroupBy adds GROUP BY expressions to the query.
+func (b SelectBuilder) GroupBy(groupBys ...string) SelectBuilder {
+	return builder.Extend(b, "GroupBys", groupBys).(SelectBuilder)
+}
+
+// Having adds an expression to the HAVING clause of the query.
+//
+// See Where.
+func (b SelectBuilder) Having(pred interface{}, rest ...interface{}) SelectBuilder {
+	return builder.Append(b, "HavingParts", newWherePart(pred, rest...)).(SelectBuilder)
+}
+
+// OrderByClause adds ORDER BY clause to the query.
+func (b SelectBuilder) OrderByClause(pred interface{}, args ...interface{}) SelectBuilder {
+	return builder.Append(b, "OrderByParts", newPart(pred, args...)).(SelectBuilder)
+}
+
+// OrderBy adds ORDER BY expressions to the query.
+func (b SelectBuilder) OrderBy(orderBys ...string) SelectBuilder {
+	for _, orderBy := range orderBys {
+		b = b.OrderByClause(orderBy)
+	}
+
+	return b
+}
+
+// Limit sets a LIMIT clause on the query.
+func (b SelectBuilder) Limit(limit uint64) SelectBuilder {
+	return builder.Set(b, "Limit", fmt.Sprintf("%d", limit)).(SelectBuilder)
+}
+
+// Limit ALL allows to access all records with limit
+func (b SelectBuilder) RemoveLimit() SelectBuilder {
+	return builder.Delete(b, "Limit").(SelectBuilder)
+}
+
+// Offset sets a OFFSET clause on the query.
+func (b SelectBuilder) Offset(offset uint64) SelectBuilder {
+	return builder.Set(b, "Offset", fmt.Sprintf("%d", offset)).(SelectBuilder)
+}
+
+// RemoveOffset removes OFFSET clause.
+func (b SelectBuilder) RemoveOffset() SelectBuilder {
+	return builder.Delete(b, "Offset").(SelectBuilder)
+}
+
+// Suffix adds an expression to the end of the query
+func (b SelectBuilder) Suffix(sql string, args ...interface{}) SelectBuilder {
+	return b.SuffixExpr(Expr(sql, args...))
+}
+
+// SuffixExpr adds an expression to the end of the query
+func (b SelectBuilder) SuffixExpr(expr Sqlizer) SelectBuilder {
+	return builder.Append(b, "Suffixes", expr).(SelectBuilder)
+}

server/vendor/github.com/Masterminds/squirrel/select_ctx.go

@@ -0,0 +1,69 @@
+// +build go1.8
+
+package squirrel
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/lann/builder"
+)
+
+func (d *selectData) ExecContext(ctx context.Context) (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(ExecerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return ExecContextWith(ctx, ctxRunner, d)
+}
+
+func (d *selectData) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(QueryerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return QueryContextWith(ctx, ctxRunner, d)
+}
+
+func (d *selectData) QueryRowContext(ctx context.Context) RowScanner {
+	if d.RunWith == nil {
+		return &Row{err: RunnerNotSet}
+	}
+	queryRower, ok := d.RunWith.(QueryRowerContext)
+	if !ok {
+		if _, ok := d.RunWith.(QueryerContext); !ok {
+			return &Row{err: RunnerNotQueryRunner}
+		}
+		return &Row{err: NoContextSupport}
+	}
+	return QueryRowContextWith(ctx, queryRower, d)
+}
+
+// ExecContext builds and ExecContexts the query with the Runner set by RunWith.
+func (b SelectBuilder) ExecContext(ctx context.Context) (sql.Result, error) {
+	data := builder.GetStruct(b).(selectData)
+	return data.ExecContext(ctx)
+}
+
+// QueryContext builds and QueryContexts the query with the Runner set by RunWith.
+func (b SelectBuilder) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	data := builder.GetStruct(b).(selectData)
+	return data.QueryContext(ctx)
+}
+
+// QueryRowContext builds and QueryRowContexts the query with the Runner set by RunWith.
+func (b SelectBuilder) QueryRowContext(ctx context.Context) RowScanner {
+	data := builder.GetStruct(b).(selectData)
+	return data.QueryRowContext(ctx)
+}
+
+// ScanContext is a shortcut for QueryRowContext().Scan.
+func (b SelectBuilder) ScanContext(ctx context.Context, dest ...interface{}) error {
+	return b.QueryRowContext(ctx).Scan(dest...)
+}

server/vendor/github.com/Masterminds/squirrel/squirrel.go

@@ -0,0 +1,183 @@
+// Package squirrel provides a fluent SQL generator.
+//
+// See https://github.com/Masterminds/squirrel for examples.
+package squirrel
+
+import (
+	"bytes"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/lann/builder"
+)
+
+// Sqlizer is the interface that wraps the ToSql method.
+//
+// ToSql returns a SQL representation of the Sqlizer, along with a slice of args
+// as passed to e.g. database/sql.Exec. It can also return an error.
+type Sqlizer interface {
+	ToSql() (string, []interface{}, error)
+}
+
+// rawSqlizer is expected to do what Sqlizer does, but without finalizing placeholders.
+// This is useful for nested queries.
+type rawSqlizer interface {
+	toSqlRaw() (string, []interface{}, error)
+}
+
+// Execer is the interface that wraps the Exec method.
+//
+// Exec executes the given query as implemented by database/sql.Exec.
+type Execer interface {
+	Exec(query string, args ...interface{}) (sql.Result, error)
+}
+
+// Queryer is the interface that wraps the Query method.
+//
+// Query executes the given query as implemented by database/sql.Query.
+type Queryer interface {
+	Query(query string, args ...interface{}) (*sql.Rows, error)
+}
+
+// QueryRower is the interface that wraps the QueryRow method.
+//
+// QueryRow executes the given query as implemented by database/sql.QueryRow.
+type QueryRower interface {
+	QueryRow(query string, args ...interface{}) RowScanner
+}
+
+// BaseRunner groups the Execer and Queryer interfaces.
+type BaseRunner interface {
+	Execer
+	Queryer
+}
+
+// Runner groups the Execer, Queryer, and QueryRower interfaces.
+type Runner interface {
+	Execer
+	Queryer
+	QueryRower
+}
+
+// WrapStdSql wraps a type implementing the standard SQL interface with methods that
+// squirrel expects.
+func WrapStdSql(stdSql StdSql) Runner {
+	return &stdsqlRunner{stdSql}
+}
+
+// StdSql encompasses the standard methods of the *sql.DB type, and other types that
+// wrap these methods.
+type StdSql interface {
+	Query(string, ...interface{}) (*sql.Rows, error)
+	QueryRow(string, ...interface{}) *sql.Row
+	Exec(string, ...interface{}) (sql.Result, error)
+}
+
+type stdsqlRunner struct {
+	StdSql
+}
+
+func (r *stdsqlRunner) QueryRow(query string, args ...interface{}) RowScanner {
+	return r.StdSql.QueryRow(query, args...)
+}
+
+func setRunWith(b interface{}, runner BaseRunner) interface{} {
+	switch r := runner.(type) {
+	case StdSqlCtx:
+		runner = WrapStdSqlCtx(r)
+	case StdSql:
+		runner = WrapStdSql(r)
+	}
+	return builder.Set(b, "RunWith", runner)
+}
+
+// RunnerNotSet is returned by methods that need a Runner if it isn't set.
+var RunnerNotSet = fmt.Errorf("cannot run; no Runner set (RunWith)")
+
+// RunnerNotQueryRunner is returned by QueryRow if the RunWith value doesn't implement QueryRower.
+var RunnerNotQueryRunner = fmt.Errorf("cannot QueryRow; Runner is not a QueryRower")
+
+// ExecWith Execs the SQL returned by s with db.
+func ExecWith(db Execer, s Sqlizer) (res sql.Result, err error) {
+	query, args, err := s.ToSql()
+	if err != nil {
+		return
+	}
+	return db.Exec(query, args...)
+}
+
+// QueryWith Querys the SQL returned by s with db.
+func QueryWith(db Queryer, s Sqlizer) (rows *sql.Rows, err error) {
+	query, args, err := s.ToSql()
+	if err != nil {
+		return
+	}
+	return db.Query(query, args...)
+}
+
+// QueryRowWith QueryRows the SQL returned by s with db.
+func QueryRowWith(db QueryRower, s Sqlizer) RowScanner {
+	query, args, err := s.ToSql()
+	return &Row{RowScanner: db.QueryRow(query, args...), err: err}
+}
+
+// DebugSqlizer calls ToSql on s and shows the approximate SQL to be executed
+//
+// If ToSql returns an error, the result of this method will look like:
+// "[ToSql error: %s]" or "[DebugSqlizer error: %s]"
+//
+// IMPORTANT: As its name suggests, this function should only be used for
+// debugging. While the string result *might* be valid SQL, this function does
+// not try very hard to ensure it. Additionally, executing the output of this
+// function with any untrusted user input is certainly insecure.
+func DebugSqlizer(s Sqlizer) string {
+	sql, args, err := s.ToSql()
+	if err != nil {
+		return fmt.Sprintf("[ToSql error: %s]", err)
+	}
+
+	var placeholder string
+	downCast, ok := s.(placeholderDebugger)
+	if !ok {
+		placeholder = "?"
+	} else {
+		placeholder = downCast.debugPlaceholder()
+	}
+	// TODO: dedupe this with placeholder.go
+	buf := &bytes.Buffer{}
+	i := 0
+	for {
+		p := strings.Index(sql, placeholder)
+		if p == -1 {
+			break
+		}
+		if len(sql[p:]) > 1 && sql[p:p+2] == "??" { // escape ?? => ?
+			buf.WriteString(sql[:p])
+			buf.WriteString("?")
+			if len(sql[p:]) == 1 {
+				break
+			}
+			sql = sql[p+2:]
+		} else {
+			if i+1 > len(args) {
+				return fmt.Sprintf(
+					"[DebugSqlizer error: too many placeholders in %#v for %d args]",
+					sql, len(args))
+			}
+			buf.WriteString(sql[:p])
+			fmt.Fprintf(buf, "'%v'", args[i])
+			// advance our sql string "cursor" beyond the arg we placed
+			sql = sql[p+1:]
+			i++
+		}
+	}
+	if i < len(args) {
+		return fmt.Sprintf(
+			"[DebugSqlizer error: not enough placeholders in %#v for %d args]",
+			sql, len(args))
+	}
+	// "append" any remaning sql that won't need interpolating
+	buf.WriteString(sql)
+	return buf.String()
+}

server/vendor/github.com/Masterminds/squirrel/squirrel_ctx.go

@@ -0,0 +1,93 @@
+// +build go1.8
+
+package squirrel
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+)
+
+// NoContextSupport is returned if a db doesn't support Context.
+var NoContextSupport = errors.New("DB does not support Context")
+
+// ExecerContext is the interface that wraps the ExecContext method.
+//
+// Exec executes the given query as implemented by database/sql.ExecContext.
+type ExecerContext interface {
+	ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error)
+}
+
+// QueryerContext is the interface that wraps the QueryContext method.
+//
+// QueryContext executes the given query as implemented by database/sql.QueryContext.
+type QueryerContext interface {
+	QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)
+}
+
+// QueryRowerContext is the interface that wraps the QueryRowContext method.
+//
+// QueryRowContext executes the given query as implemented by database/sql.QueryRowContext.
+type QueryRowerContext interface {
+	QueryRowContext(ctx context.Context, query string, args ...interface{}) RowScanner
+}
+
+// RunnerContext groups the Runner interface, along with the Contect versions of each of
+// its methods
+type RunnerContext interface {
+	Runner
+	QueryerContext
+	QueryRowerContext
+	ExecerContext
+}
+
+// WrapStdSqlCtx wraps a type implementing the standard SQL interface plus the context
+// versions of the methods with methods that squirrel expects.
+func WrapStdSqlCtx(stdSqlCtx StdSqlCtx) RunnerContext {
+	return &stdsqlCtxRunner{stdSqlCtx}
+}
+
+// StdSqlCtx encompasses the standard methods of the *sql.DB type, along with the Context
+// versions of those methods, and other types that wrap these methods.
+type StdSqlCtx interface {
+	StdSql
+	QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
+	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
+	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
+}
+
+type stdsqlCtxRunner struct {
+	StdSqlCtx
+}
+
+func (r *stdsqlCtxRunner) QueryRow(query string, args ...interface{}) RowScanner {
+	return r.StdSqlCtx.QueryRow(query, args...)
+}
+
+func (r *stdsqlCtxRunner) QueryRowContext(ctx context.Context, query string, args ...interface{}) RowScanner {
+	return r.StdSqlCtx.QueryRowContext(ctx, query, args...)
+}
+
+// ExecContextWith ExecContexts the SQL returned by s with db.
+func ExecContextWith(ctx context.Context, db ExecerContext, s Sqlizer) (res sql.Result, err error) {
+	query, args, err := s.ToSql()
+	if err != nil {
+		return
+	}
+	return db.ExecContext(ctx, query, args...)
+}
+
+// QueryContextWith QueryContexts the SQL returned by s with db.
+func QueryContextWith(ctx context.Context, db QueryerContext, s Sqlizer) (rows *sql.Rows, err error) {
+	query, args, err := s.ToSql()
+	if err != nil {
+		return
+	}
+	return db.QueryContext(ctx, query, args...)
+}
+
+// QueryRowContextWith QueryRowContexts the SQL returned by s with db.
+func QueryRowContextWith(ctx context.Context, db QueryRowerContext, s Sqlizer) RowScanner {
+	query, args, err := s.ToSql()
+	return &Row{RowScanner: db.QueryRowContext(ctx, query, args...), err: err}
+}

server/vendor/github.com/Masterminds/squirrel/statement.go

@@ -0,0 +1,104 @@
+package squirrel
+
+import "github.com/lann/builder"
+
+// StatementBuilderType is the type of StatementBuilder.
+type StatementBuilderType builder.Builder
+
+// Select returns a SelectBuilder for this StatementBuilderType.
+func (b StatementBuilderType) Select(columns ...string) SelectBuilder {
+	return SelectBuilder(b).Columns(columns...)
+}
+
+// Insert returns a InsertBuilder for this StatementBuilderType.
+func (b StatementBuilderType) Insert(into string) InsertBuilder {
+	return InsertBuilder(b).Into(into)
+}
+
+// Replace returns a InsertBuilder for this StatementBuilderType with the
+// statement keyword set to "REPLACE".
+func (b StatementBuilderType) Replace(into string) InsertBuilder {
+	return InsertBuilder(b).statementKeyword("REPLACE").Into(into)
+}
+
+// Update returns a UpdateBuilder for this StatementBuilderType.
+func (b StatementBuilderType) Update(table string) UpdateBuilder {
+	return UpdateBuilder(b).Table(table)
+}
+
+// Delete returns a DeleteBuilder for this StatementBuilderType.
+func (b StatementBuilderType) Delete(from string) DeleteBuilder {
+	return DeleteBuilder(b).From(from)
+}
+
+// PlaceholderFormat sets the PlaceholderFormat field for any child builders.
+func (b StatementBuilderType) PlaceholderFormat(f PlaceholderFormat) StatementBuilderType {
+	return builder.Set(b, "PlaceholderFormat", f).(StatementBuilderType)
+}
+
+// RunWith sets the RunWith field for any child builders.
+func (b StatementBuilderType) RunWith(runner BaseRunner) StatementBuilderType {
+	return setRunWith(b, runner).(StatementBuilderType)
+}
+
+// Where adds WHERE expressions to the query.
+//
+// See SelectBuilder.Where for more information.
+func (b StatementBuilderType) Where(pred interface{}, args ...interface{}) StatementBuilderType {
+	return builder.Append(b, "WhereParts", newWherePart(pred, args...)).(StatementBuilderType)
+}
+
+// StatementBuilder is a parent builder for other builders, e.g. SelectBuilder.
+var StatementBuilder = StatementBuilderType(builder.EmptyBuilder).PlaceholderFormat(Question)
+
+// Select returns a new SelectBuilder, optionally setting some result columns.
+//
+// See SelectBuilder.Columns.
+func Select(columns ...string) SelectBuilder {
+	return StatementBuilder.Select(columns...)
+}
+
+// Insert returns a new InsertBuilder with the given table name.
+//
+// See InsertBuilder.Into.
+func Insert(into string) InsertBuilder {
+	return StatementBuilder.Insert(into)
+}
+
+// Replace returns a new InsertBuilder with the statement keyword set to
+// "REPLACE" and with the given table name.
+//
+// See InsertBuilder.Into.
+func Replace(into string) InsertBuilder {
+	return StatementBuilder.Replace(into)
+}
+
+// Update returns a new UpdateBuilder with the given table name.
+//
+// See UpdateBuilder.Table.
+func Update(table string) UpdateBuilder {
+	return StatementBuilder.Update(table)
+}
+
+// Delete returns a new DeleteBuilder with the given table name.
+//
+// See DeleteBuilder.Table.
+func Delete(from string) DeleteBuilder {
+	return StatementBuilder.Delete(from)
+}
+
+// Case returns a new CaseBuilder
+// "what" represents case value
+func Case(what ...interface{}) CaseBuilder {
+	b := CaseBuilder(builder.EmptyBuilder)
+
+	switch len(what) {
+	case 0:
+	case 1:
+		b = b.what(what[0])
+	default:
+		b = b.what(newPart(what[0], what[1:]...))
+
+	}
+	return b
+}

server/vendor/github.com/Masterminds/squirrel/stmtcacher.go

@@ -0,0 +1,121 @@
+package squirrel
+
+import (
+	"database/sql"
+	"fmt"
+	"sync"
+)
+
+// Prepareer is the interface that wraps the Prepare method.
+//
+// Prepare executes the given query as implemented by database/sql.Prepare.
+type Preparer interface {
+	Prepare(query string) (*sql.Stmt, error)
+}
+
+// DBProxy groups the Execer, Queryer, QueryRower, and Preparer interfaces.
+type DBProxy interface {
+	Execer
+	Queryer
+	QueryRower
+	Preparer
+}
+
+// NOTE: NewStmtCache is defined in stmtcacher_ctx.go (Go >= 1.8) or stmtcacher_noctx.go (Go < 1.8).
+
+// StmtCache wraps and delegates down to a Preparer type
+//
+// It also automatically prepares all statements sent to the underlying Preparer calls
+// for Exec, Query and QueryRow and caches the returns *sql.Stmt using the provided
+// query as the key. So that it can be automatically re-used.
+type StmtCache struct {
+	prep  Preparer
+	cache map[string]*sql.Stmt
+	mu    sync.Mutex
+}
+
+// Prepare delegates down to the underlying Preparer and caches the result
+// using the provided query as a key
+func (sc *StmtCache) Prepare(query string) (*sql.Stmt, error) {
+	sc.mu.Lock()
+	defer sc.mu.Unlock()
+
+	stmt, ok := sc.cache[query]
+	if ok {
+		return stmt, nil
+	}
+	stmt, err := sc.prep.Prepare(query)
+	if err == nil {
+		sc.cache[query] = stmt
+	}
+	return stmt, err
+}
+
+// Exec delegates down to the underlying Preparer using a prepared statement
+func (sc *StmtCache) Exec(query string, args ...interface{}) (res sql.Result, err error) {
+	stmt, err := sc.Prepare(query)
+	if err != nil {
+		return
+	}
+	return stmt.Exec(args...)
+}
+
+// Query delegates down to the underlying Preparer using a prepared statement
+func (sc *StmtCache) Query(query string, args ...interface{}) (rows *sql.Rows, err error) {
+	stmt, err := sc.Prepare(query)
+	if err != nil {
+		return
+	}
+	return stmt.Query(args...)
+}
+
+// QueryRow delegates down to the underlying Preparer using a prepared statement
+func (sc *StmtCache) QueryRow(query string, args ...interface{}) RowScanner {
+	stmt, err := sc.Prepare(query)
+	if err != nil {
+		return &Row{err: err}
+	}
+	return stmt.QueryRow(args...)
+}
+
+// Clear removes and closes all the currently cached prepared statements
+func (sc *StmtCache) Clear() (err error) {
+	sc.mu.Lock()
+	defer sc.mu.Unlock()
+
+	for key, stmt := range sc.cache {
+		delete(sc.cache, key)
+
+		if stmt == nil {
+			continue
+		}
+
+		if cerr := stmt.Close(); cerr != nil {
+			err = cerr
+		}
+	}
+
+	if err != nil {
+		return fmt.Errorf("one or more Stmt.Close failed; last error: %v", err)
+	}
+
+	return
+}
+
+type DBProxyBeginner interface {
+	DBProxy
+	Begin() (*sql.Tx, error)
+}
+
+type stmtCacheProxy struct {
+	DBProxy
+	db *sql.DB
+}
+
+func NewStmtCacheProxy(db *sql.DB) DBProxyBeginner {
+	return &stmtCacheProxy{DBProxy: NewStmtCache(db), db: db}
+}
+
+func (sp *stmtCacheProxy) Begin() (*sql.Tx, error) {
+	return sp.db.Begin()
+}

server/vendor/github.com/Masterminds/squirrel/stmtcacher_ctx.go

@@ -0,0 +1,86 @@
+// +build go1.8
+
+package squirrel
+
+import (
+	"context"
+	"database/sql"
+)
+
+// PrepareerContext is the interface that wraps the Prepare and PrepareContext methods.
+//
+// Prepare executes the given query as implemented by database/sql.Prepare.
+// PrepareContext executes the given query as implemented by database/sql.PrepareContext.
+type PreparerContext interface {
+	Preparer
+	PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
+}
+
+// DBProxyContext groups the Execer, Queryer, QueryRower and PreparerContext interfaces.
+type DBProxyContext interface {
+	Execer
+	Queryer
+	QueryRower
+	PreparerContext
+}
+
+// NewStmtCache returns a *StmtCache wrapping a PreparerContext that caches Prepared Stmts.
+//
+// Stmts are cached based on the string value of their queries.
+func NewStmtCache(prep PreparerContext) *StmtCache {
+	return &StmtCache{prep: prep, cache: make(map[string]*sql.Stmt)}
+}
+
+// NewStmtCacher is deprecated
+//
+// Use NewStmtCache instead
+func NewStmtCacher(prep PreparerContext) DBProxyContext {
+	return NewStmtCache(prep)
+}
+
+// PrepareContext delegates down to the underlying PreparerContext and caches the result
+// using the provided query as a key
+func (sc *StmtCache) PrepareContext(ctx context.Context, query string) (*sql.Stmt, error) {
+	ctxPrep, ok := sc.prep.(PreparerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	sc.mu.Lock()
+	defer sc.mu.Unlock()
+	stmt, ok := sc.cache[query]
+	if ok {
+		return stmt, nil
+	}
+	stmt, err := ctxPrep.PrepareContext(ctx, query)
+	if err == nil {
+		sc.cache[query] = stmt
+	}
+	return stmt, err
+}
+
+// ExecContext delegates down to the underlying PreparerContext using a prepared statement
+func (sc *StmtCache) ExecContext(ctx context.Context, query string, args ...interface{}) (res sql.Result, err error) {
+	stmt, err := sc.PrepareContext(ctx, query)
+	if err != nil {
+		return
+	}
+	return stmt.ExecContext(ctx, args...)
+}
+
+// QueryContext delegates down to the underlying PreparerContext using a prepared statement
+func (sc *StmtCache) QueryContext(ctx context.Context, query string, args ...interface{}) (rows *sql.Rows, err error) {
+	stmt, err := sc.PrepareContext(ctx, query)
+	if err != nil {
+		return
+	}
+	return stmt.QueryContext(ctx, args...)
+}
+
+// QueryRowContext delegates down to the underlying PreparerContext using a prepared statement
+func (sc *StmtCache) QueryRowContext(ctx context.Context, query string, args ...interface{}) RowScanner {
+	stmt, err := sc.PrepareContext(ctx, query)
+	if err != nil {
+		return &Row{err: err}
+	}
+	return stmt.QueryRowContext(ctx, args...)
+}

server/vendor/github.com/Masterminds/squirrel/stmtcacher_noctx.go

@@ -0,0 +1,21 @@
+// +build !go1.8
+
+package squirrel
+
+import (
+	"database/sql"
+)
+
+// NewStmtCacher returns a DBProxy wrapping prep that caches Prepared Stmts.
+//
+// Stmts are cached based on the string value of their queries.
+func NewStmtCache(prep Preparer) *StmtCache {
+	return &StmtCacher{prep: prep, cache: make(map[string]*sql.Stmt)}
+}
+
+// NewStmtCacher is deprecated
+//
+// Use NewStmtCache instead
+func NewStmtCacher(prep Preparer) DBProxy {
+	return NewStmtCache(prep)
+}

server/vendor/github.com/Masterminds/squirrel/update.go

@@ -0,0 +1,256 @@
+package squirrel
+
+import (
+	"bytes"
+	"database/sql"
+	"fmt"
+	"sort"
+	"strings"
+
+	"github.com/lann/builder"
+)
+
+type updateData struct {
+	PlaceholderFormat PlaceholderFormat
+	RunWith           BaseRunner
+	Prefixes          []Sqlizer
+	Table             string
+	SetClauses        []setClause
+	WhereParts        []Sqlizer
+	OrderBys          []string
+	Limit             string
+	Offset            string
+	Suffixes          []Sqlizer
+}
+
+type setClause struct {
+	column string
+	value  interface{}
+}
+
+func (d *updateData) Exec() (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return ExecWith(d.RunWith, d)
+}
+
+func (d *updateData) Query() (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	return QueryWith(d.RunWith, d)
+}
+
+func (d *updateData) QueryRow() RowScanner {
+	if d.RunWith == nil {
+		return &Row{err: RunnerNotSet}
+	}
+	queryRower, ok := d.RunWith.(QueryRower)
+	if !ok {
+		return &Row{err: RunnerNotQueryRunner}
+	}
+	return QueryRowWith(queryRower, d)
+}
+
+func (d *updateData) ToSql() (sqlStr string, args []interface{}, err error) {
+	if len(d.Table) == 0 {
+		err = fmt.Errorf("update statements must specify a table")
+		return
+	}
+	if len(d.SetClauses) == 0 {
+		err = fmt.Errorf("update statements must have at least one Set clause")
+		return
+	}
+
+	sql := &bytes.Buffer{}
+
+	if len(d.Prefixes) > 0 {
+		args, err = appendToSql(d.Prefixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+
+		sql.WriteString(" ")
+	}
+
+	sql.WriteString("UPDATE ")
+	sql.WriteString(d.Table)
+
+	sql.WriteString(" SET ")
+	setSqls := make([]string, len(d.SetClauses))
+	for i, setClause := range d.SetClauses {
+		var valSql string
+		if vs, ok := setClause.value.(Sqlizer); ok {
+			vsql, vargs, err := vs.ToSql()
+			if err != nil {
+				return "", nil, err
+			}
+			if _, ok := vs.(SelectBuilder); ok {
+				valSql = fmt.Sprintf("(%s)", vsql)
+			} else {
+				valSql = vsql
+			}
+			args = append(args, vargs...)
+		} else {
+			valSql = "?"
+			args = append(args, setClause.value)
+		}
+		setSqls[i] = fmt.Sprintf("%s = %s", setClause.column, valSql)
+	}
+	sql.WriteString(strings.Join(setSqls, ", "))
+
+	if len(d.WhereParts) > 0 {
+		sql.WriteString(" WHERE ")
+		args, err = appendToSql(d.WhereParts, sql, " AND ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	if len(d.OrderBys) > 0 {
+		sql.WriteString(" ORDER BY ")
+		sql.WriteString(strings.Join(d.OrderBys, ", "))
+	}
+
+	if len(d.Limit) > 0 {
+		sql.WriteString(" LIMIT ")
+		sql.WriteString(d.Limit)
+	}
+
+	if len(d.Offset) > 0 {
+		sql.WriteString(" OFFSET ")
+		sql.WriteString(d.Offset)
+	}
+
+	if len(d.Suffixes) > 0 {
+		sql.WriteString(" ")
+		args, err = appendToSql(d.Suffixes, sql, " ", args)
+		if err != nil {
+			return
+		}
+	}
+
+	sqlStr, err = d.PlaceholderFormat.ReplacePlaceholders(sql.String())
+	return
+}
+
+// Builder
+
+// UpdateBuilder builds SQL UPDATE statements.
+type UpdateBuilder builder.Builder
+
+func init() {
+	builder.Register(UpdateBuilder{}, updateData{})
+}
+
+// Format methods
+
+// PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the
+// query.
+func (b UpdateBuilder) PlaceholderFormat(f PlaceholderFormat) UpdateBuilder {
+	return builder.Set(b, "PlaceholderFormat", f).(UpdateBuilder)
+}
+
+// Runner methods
+
+// RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.
+func (b UpdateBuilder) RunWith(runner BaseRunner) UpdateBuilder {
+	return setRunWith(b, runner).(UpdateBuilder)
+}
+
+// Exec builds and Execs the query with the Runner set by RunWith.
+func (b UpdateBuilder) Exec() (sql.Result, error) {
+	data := builder.GetStruct(b).(updateData)
+	return data.Exec()
+}
+
+func (b UpdateBuilder) Query() (*sql.Rows, error) {
+	data := builder.GetStruct(b).(updateData)
+	return data.Query()
+}
+
+func (b UpdateBuilder) QueryRow() RowScanner {
+	data := builder.GetStruct(b).(updateData)
+	return data.QueryRow()
+}
+
+func (b UpdateBuilder) Scan(dest ...interface{}) error {
+	return b.QueryRow().Scan(dest...)
+}
+
+// SQL methods
+
+// ToSql builds the query into a SQL string and bound args.
+func (b UpdateBuilder) ToSql() (string, []interface{}, error) {
+	data := builder.GetStruct(b).(updateData)
+	return data.ToSql()
+}
+
+// Prefix adds an expression to the beginning of the query
+func (b UpdateBuilder) Prefix(sql string, args ...interface{}) UpdateBuilder {
+	return b.PrefixExpr(Expr(sql, args...))
+}
+
+// PrefixExpr adds an expression to the very beginning of the query
+func (b UpdateBuilder) PrefixExpr(expr Sqlizer) UpdateBuilder {
+	return builder.Append(b, "Prefixes", expr).(UpdateBuilder)
+}
+
+// Table sets the table to be updated.
+func (b UpdateBuilder) Table(table string) UpdateBuilder {
+	return builder.Set(b, "Table", table).(UpdateBuilder)
+}
+
+// Set adds SET clauses to the query.
+func (b UpdateBuilder) Set(column string, value interface{}) UpdateBuilder {
+	return builder.Append(b, "SetClauses", setClause{column: column, value: value}).(UpdateBuilder)
+}
+
+// SetMap is a convenience method which calls .Set for each key/value pair in clauses.
+func (b UpdateBuilder) SetMap(clauses map[string]interface{}) UpdateBuilder {
+	keys := make([]string, len(clauses))
+	i := 0
+	for key := range clauses {
+		keys[i] = key
+		i++
+	}
+	sort.Strings(keys)
+	for _, key := range keys {
+		val, _ := clauses[key]
+		b = b.Set(key, val)
+	}
+	return b
+}
+
+// Where adds WHERE expressions to the query.
+//
+// See SelectBuilder.Where for more information.
+func (b UpdateBuilder) Where(pred interface{}, args ...interface{}) UpdateBuilder {
+	return builder.Append(b, "WhereParts", newWherePart(pred, args...)).(UpdateBuilder)
+}
+
+// OrderBy adds ORDER BY expressions to the query.
+func (b UpdateBuilder) OrderBy(orderBys ...string) UpdateBuilder {
+	return builder.Extend(b, "OrderBys", orderBys).(UpdateBuilder)
+}
+
+// Limit sets a LIMIT clause on the query.
+func (b UpdateBuilder) Limit(limit uint64) UpdateBuilder {
+	return builder.Set(b, "Limit", fmt.Sprintf("%d", limit)).(UpdateBuilder)
+}
+
+// Offset sets a OFFSET clause on the query.
+func (b UpdateBuilder) Offset(offset uint64) UpdateBuilder {
+	return builder.Set(b, "Offset", fmt.Sprintf("%d", offset)).(UpdateBuilder)
+}
+
+// Suffix adds an expression to the end of the query
+func (b UpdateBuilder) Suffix(sql string, args ...interface{}) UpdateBuilder {
+	return b.SuffixExpr(Expr(sql, args...))
+}
+
+// SuffixExpr adds an expression to the end of the query
+func (b UpdateBuilder) SuffixExpr(expr Sqlizer) UpdateBuilder {
+	return builder.Append(b, "Suffixes", expr).(UpdateBuilder)
+}

server/vendor/github.com/Masterminds/squirrel/update_ctx.go

@@ -0,0 +1,69 @@
+// +build go1.8
+
+package squirrel
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/lann/builder"
+)
+
+func (d *updateData) ExecContext(ctx context.Context) (sql.Result, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(ExecerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return ExecContextWith(ctx, ctxRunner, d)
+}
+
+func (d *updateData) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	if d.RunWith == nil {
+		return nil, RunnerNotSet
+	}
+	ctxRunner, ok := d.RunWith.(QueryerContext)
+	if !ok {
+		return nil, NoContextSupport
+	}
+	return QueryContextWith(ctx, ctxRunner, d)
+}
+
+func (d *updateData) QueryRowContext(ctx context.Context) RowScanner {
+	if d.RunWith == nil {
+		return &Row{err: RunnerNotSet}
+	}
+	queryRower, ok := d.RunWith.(QueryRowerContext)
+	if !ok {
+		if _, ok := d.RunWith.(QueryerContext); !ok {
+			return &Row{err: RunnerNotQueryRunner}
+		}
+		return &Row{err: NoContextSupport}
+	}
+	return QueryRowContextWith(ctx, queryRower, d)
+}
+
+// ExecContext builds and ExecContexts the query with the Runner set by RunWith.
+func (b UpdateBuilder) ExecContext(ctx context.Context) (sql.Result, error) {
+	data := builder.GetStruct(b).(updateData)
+	return data.ExecContext(ctx)
+}
+
+// QueryContext builds and QueryContexts the query with the Runner set by RunWith.
+func (b UpdateBuilder) QueryContext(ctx context.Context) (*sql.Rows, error) {
+	data := builder.GetStruct(b).(updateData)
+	return data.QueryContext(ctx)
+}
+
+// QueryRowContext builds and QueryRowContexts the query with the Runner set by RunWith.
+func (b UpdateBuilder) QueryRowContext(ctx context.Context) RowScanner {
+	data := builder.GetStruct(b).(updateData)
+	return data.QueryRowContext(ctx)
+}
+
+// ScanContext is a shortcut for QueryRowContext().Scan.
+func (b UpdateBuilder) ScanContext(ctx context.Context, dest ...interface{}) error {
+	return b.QueryRowContext(ctx).Scan(dest...)
+}

server/vendor/github.com/Masterminds/squirrel/where.go

@@ -0,0 +1,30 @@
+package squirrel
+
+import (
+	"fmt"
+)
+
+type wherePart part
+
+func newWherePart(pred interface{}, args ...interface{}) Sqlizer {
+	return &wherePart{pred: pred, args: args}
+}
+
+func (p wherePart) ToSql() (sql string, args []interface{}, err error) {
+	switch pred := p.pred.(type) {
+	case nil:
+		// no-op
+	case rawSqlizer:
+		return pred.toSqlRaw()
+	case Sqlizer:
+		return pred.ToSql()
+	case map[string]interface{}:
+		return Eq(pred).ToSql()
+	case string:
+		sql = pred
+		args = p.args
+	default:
+		err = fmt.Errorf("expected string-keyed map or string, not %T", pred)
+	}
+	return
+}

server/vendor/github.com/corpix/uarand/.gitignore

@@ -0,0 +1,2 @@
+/build
+*~

server/vendor/github.com/corpix/uarand/.travis.yml

@@ -0,0 +1,3 @@
+language: nix
+
+script: nix-shell --pure --command "make lint test"

server/vendor/github.com/corpix/uarand/LICENSE

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>

server/vendor/github.com/corpix/uarand/Makefile

@@ -0,0 +1,32 @@
+.DEFAULT_GOAL = all
+
+version  := $(shell git rev-list --count HEAD).$(shell git rev-parse --short HEAD)
+
+name     := uarand
+package  := github.com/corpix/$(name)
+
+.PHONY: all
+all:: useragents.go
+
+.PHONY: test
+test:
+	go test -v ./...
+
+.PHONY: lint
+lint:
+.PHONY: lint
+lint:
+	golangci-lint --color=always                                                       \
+		--exclude='uses unkeyed fields'                                            \
+		--exclude='type .* is unused'                                              \
+		--exclude='should merge variable declaration with assignment on next line' \
+		--deadline=120s                                                            \
+		run ./...
+
+.PHONY: check
+check: lint test
+
+.PHONY: useragents.go
+useragents.go:
+	./scripts/fetch-user-agents | ./scripts/generate-useragents-go $(name) > $@
+	go fmt $@

server/vendor/github.com/corpix/uarand/README.md

@@ -0,0 +1,38 @@
+uarand
+----------------
+
+[![Build Status](https://travis-ci.org/corpix/uarand.svg?branch=master)](https://travis-ci.org/corpix/uarand)
+
+Random user-agent producer for go.
+
+## Example
+
+``` go
+package main
+
+import (
+	"fmt"
+
+	"github.com/corpix/uarand"
+)
+
+func main() {
+	fmt.Println(uarand.GetRandom())
+}
+```
+
+Save it to `snippet.go` and run:
+
+``` shell
+go run snippet.go
+```
+
+Which should produce something similar to:
+
+``` text
+Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.0 Safari/537.36
+```
+
+## License
+
+[Unlicense](https://unlicense.org/)

server/vendor/github.com/corpix/uarand/shell.nix

@@ -0,0 +1,17 @@
+let
+  nixpkgs = builtins.fetchTarball {
+    url    = "https://github.com/nixos/nixpkgs/archive/ddf38a8241089d79c3bcd1777781b6438ab88d84.tar.gz";
+    sha256 = "0fjk69mn58h0gjzgxgnkfkhhf1l707bg2cn4823ma9xbjxbhl0ya";
+  };
+in with import nixpkgs {};
+stdenv.mkDerivation {
+  name = "nix-shell";
+  buildInputs = [
+    coreutils bashInteractive jq curl gcc git gnumake
+    go golangci-lint cacert openssl
+  ];
+  shellHook = ''
+    unset GOPATH
+    export NIX_PATH=nixpkgs=${nixpkgs}
+  '';
+}

server/vendor/github.com/corpix/uarand/uarand.go

@@ -0,0 +1,63 @@
+package uarand
+
+import (
+	"math/rand"
+	"sync"
+	"time"
+)
+
+var (
+	// Default is the UARand with default settings.
+	Default = New(
+		rand.New(
+			rand.NewSource(time.Now().UnixNano()),
+		),
+	)
+)
+
+// Randomizer represents some entity which could provide us an entropy.
+type Randomizer interface {
+	Seed(n int64)
+	Intn(n int) int
+}
+
+// UARand describes the user agent randomizer settings.
+type UARand struct {
+	Randomizer
+	UserAgents []string
+
+	mutex sync.Mutex
+}
+
+// GetRandom returns a random user agent from UserAgents slice.
+func (u *UARand) GetRandom() string {
+	u.mutex.Lock()
+	n := u.Intn(len(u.UserAgents))
+	u.mutex.Unlock()
+
+	return u.UserAgents[n]
+}
+
+// GetRandom returns a random user agent from UserAgents slice.
+// This version is driven by Default configuration.
+func GetRandom() string {
+	return Default.GetRandom()
+}
+
+// New return UserAgent randomizer settings with default user-agents list
+func New(r Randomizer) *UARand {
+	return &UARand{
+		Randomizer: r,
+		UserAgents: UserAgents,
+		mutex:      sync.Mutex{},
+	}
+}
+
+// NewWithCustomList return UserAgent randomizer settings with custom user-agents list
+func NewWithCustomList(userAgents []string) *UARand {
+	return &UARand{
+		Randomizer: rand.New(rand.NewSource(time.Now().UnixNano())),
+		UserAgents: userAgents,
+		mutex:      sync.Mutex{},
+	}
+}

server/vendor/github.com/davecgh/go-spew/LICENSE

@@ -0,0 +1,15 @@
+ISC License
+
+Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

server/vendor/github.com/davecgh/go-spew/spew/bypass.go

@@ -0,0 +1,145 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is not running on Google App Engine, compiled by GopherJS, and
+// "-tags safe" is not added to the go build command line.  The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// Go versions prior to 1.4 are disabled because they use a different layout
+// for interfaces which make the implementation of unsafeReflectValue more complex.
+// +build !js,!appengine,!safe,!disableunsafe,go1.4
+
+package spew
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = false
+
+	// ptrSize is the size of a pointer on the current arch.
+	ptrSize = unsafe.Sizeof((*byte)(nil))
+)
+
+type flag uintptr
+
+var (
+	// flagRO indicates whether the value field of a reflect.Value
+	// is read-only.
+	flagRO flag
+
+	// flagAddr indicates whether the address of the reflect.Value's
+	// value may be taken.
+	flagAddr flag
+)
+
+// flagKindMask holds the bits that make up the kind
+// part of the flags field. In all the supported versions,
+// it is in the lower 5 bits.
+const flagKindMask = flag(0x1f)
+
+// Different versions of Go have used different
+// bit layouts for the flags type. This table
+// records the known combinations.
+var okFlags = []struct {
+	ro, addr flag
+}{{
+	// From Go 1.4 to 1.5
+	ro:   1 << 5,
+	addr: 1 << 7,
+}, {
+	// Up to Go tip.
+	ro:   1<<5 | 1<<6,
+	addr: 1 << 8,
+}}
+
+var flagValOffset = func() uintptr {
+	field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
+	if !ok {
+		panic("reflect.Value has no flag field")
+	}
+	return field.Offset
+}()
+
+// flagField returns a pointer to the flag field of a reflect.Value.
+func flagField(v *reflect.Value) *flag {
+	return (*flag)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + flagValOffset))
+}
+
+// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
+// the typical safety restrictions preventing access to unaddressable and
+// unexported data.  It works by digging the raw pointer to the underlying
+// value out of the protected value and generating a new unprotected (unsafe)
+// reflect.Value to it.
+//
+// This allows us to check for implementations of the Stringer and error
+// interfaces to be used for pretty printing ordinarily unaddressable and
+// inaccessible values such as unexported struct fields.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+	if !v.IsValid() || (v.CanInterface() && v.CanAddr()) {
+		return v
+	}
+	flagFieldPtr := flagField(&v)
+	*flagFieldPtr &^= flagRO
+	*flagFieldPtr |= flagAddr
+	return v
+}
+
+// Sanity checks against future reflect package changes
+// to the type or semantics of the Value.flag field.
+func init() {
+	field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
+	if !ok {
+		panic("reflect.Value has no flag field")
+	}
+	if field.Type.Kind() != reflect.TypeOf(flag(0)).Kind() {
+		panic("reflect.Value flag field has changed kind")
+	}
+	type t0 int
+	var t struct {
+		A t0
+		// t0 will have flagEmbedRO set.
+		t0
+		// a will have flagStickyRO set
+		a t0
+	}
+	vA := reflect.ValueOf(t).FieldByName("A")
+	va := reflect.ValueOf(t).FieldByName("a")
+	vt0 := reflect.ValueOf(t).FieldByName("t0")
+
+	// Infer flagRO from the difference between the flags
+	// for the (otherwise identical) fields in t.
+	flagPublic := *flagField(&vA)
+	flagWithRO := *flagField(&va) | *flagField(&vt0)
+	flagRO = flagPublic ^ flagWithRO
+
+	// Infer flagAddr from the difference between a value
+	// taken from a pointer and not.
+	vPtrA := reflect.ValueOf(&t).Elem().FieldByName("A")
+	flagNoPtr := *flagField(&vA)
+	flagPtr := *flagField(&vPtrA)
+	flagAddr = flagNoPtr ^ flagPtr
+
+	// Check that the inferred flags tally with one of the known versions.
+	for _, f := range okFlags {
+		if flagRO == f.ro && flagAddr == f.addr {
+			return
+		}
+	}
+	panic("reflect.Value read-only flag has changed semantics")
+}

server/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go

@@ -0,0 +1,38 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is running on Google App Engine, compiled by GopherJS, or
+// "-tags safe" is added to the go build command line.  The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// +build js appengine safe disableunsafe !go1.4
+
+package spew
+
+import "reflect"
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = true
+)
+
+// unsafeReflectValue typically converts the passed reflect.Value into a one
+// that bypasses the typical safety restrictions preventing access to
+// unaddressable and unexported data.  However, doing this relies on access to
+// the unsafe package.  This is a stub version which simply returns the passed
+// reflect.Value when the unsafe package is not available.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+	return v
+}

server/vendor/github.com/davecgh/go-spew/spew/common.go

@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strconv"
+)
+
+// Some constants in the form of bytes to avoid string overhead.  This mirrors
+// the technique used in the fmt package.
+var (
+	panicBytes            = []byte("(PANIC=")
+	plusBytes             = []byte("+")
+	iBytes                = []byte("i")
+	trueBytes             = []byte("true")
+	falseBytes            = []byte("false")
+	interfaceBytes        = []byte("(interface {})")
+	commaNewlineBytes     = []byte(",\n")
+	newlineBytes          = []byte("\n")
+	openBraceBytes        = []byte("{")
+	openBraceNewlineBytes = []byte("{\n")
+	closeBraceBytes       = []byte("}")
+	asteriskBytes         = []byte("*")
+	colonBytes            = []byte(":")
+	colonSpaceBytes       = []byte(": ")
+	openParenBytes        = []byte("(")
+	closeParenBytes       = []byte(")")
+	spaceBytes            = []byte(" ")
+	pointerChainBytes     = []byte("->")
+	nilAngleBytes         = []byte("<nil>")
+	maxNewlineBytes       = []byte("<max depth reached>\n")
+	maxShortBytes         = []byte("<max>")
+	circularBytes         = []byte("<already shown>")
+	circularShortBytes    = []byte("<shown>")
+	invalidAngleBytes     = []byte("<invalid>")
+	openBracketBytes      = []byte("[")
+	closeBracketBytes     = []byte("]")
+	percentBytes          = []byte("%")
+	precisionBytes        = []byte(".")
+	openAngleBytes        = []byte("<")
+	closeAngleBytes       = []byte(">")
+	openMapBytes          = []byte("map[")
+	closeMapBytes         = []byte("]")
+	lenEqualsBytes        = []byte("len=")
+	capEqualsBytes        = []byte("cap=")
+)
+
+// hexDigits is used to map a decimal value to a hex digit.
+var hexDigits = "0123456789abcdef"
+
+// catchPanic handles any panics that might occur during the handleMethods
+// calls.
+func catchPanic(w io.Writer, v reflect.Value) {
+	if err := recover(); err != nil {
+		w.Write(panicBytes)
+		fmt.Fprintf(w, "%v", err)
+		w.Write(closeParenBytes)
+	}
+}
+
+// handleMethods attempts to call the Error and String methods on the underlying
+// type the passed reflect.Value represents and outputes the result to Writer w.
+//
+// It handles panics in any called methods by catching and displaying the error
+// as the formatted value.
+func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
+	// We need an interface to check if the type implements the error or
+	// Stringer interface.  However, the reflect package won't give us an
+	// interface on certain things like unexported struct fields in order
+	// to enforce visibility rules.  We use unsafe, when it's available,
+	// to bypass these restrictions since this package does not mutate the
+	// values.
+	if !v.CanInterface() {
+		if UnsafeDisabled {
+			return false
+		}
+
+		v = unsafeReflectValue(v)
+	}
+
+	// Choose whether or not to do error and Stringer interface lookups against
+	// the base type or a pointer to the base type depending on settings.
+	// Technically calling one of these methods with a pointer receiver can
+	// mutate the value, however, types which choose to satisify an error or
+	// Stringer interface with a pointer receiver should not be mutating their
+	// state inside these interface methods.
+	if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
+		v = unsafeReflectValue(v)
+	}
+	if v.CanAddr() {
+		v = v.Addr()
+	}
+
+	// Is it an error or Stringer?
+	switch iface := v.Interface().(type) {
+	case error:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.Error()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+
+		w.Write([]byte(iface.Error()))
+		return true
+
+	case fmt.Stringer:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.String()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+		w.Write([]byte(iface.String()))
+		return true
+	}
+	return false
+}
+
+// printBool outputs a boolean value as true or false to Writer w.
+func printBool(w io.Writer, val bool) {
+	if val {
+		w.Write(trueBytes)
+	} else {
+		w.Write(falseBytes)
+	}
+}
+
+// printInt outputs a signed integer value to Writer w.
+func printInt(w io.Writer, val int64, base int) {
+	w.Write([]byte(strconv.FormatInt(val, base)))
+}
+
+// printUint outputs an unsigned integer value to Writer w.
+func printUint(w io.Writer, val uint64, base int) {
+	w.Write([]byte(strconv.FormatUint(val, base)))
+}
+
+// printFloat outputs a floating point value using the specified precision,
+// which is expected to be 32 or 64bit, to Writer w.
+func printFloat(w io.Writer, val float64, precision int) {
+	w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
+}
+
+// printComplex outputs a complex value using the specified float precision
+// for the real and imaginary parts to Writer w.
+func printComplex(w io.Writer, c complex128, floatPrecision int) {
+	r := real(c)
+	w.Write(openParenBytes)
+	w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
+	i := imag(c)
+	if i >= 0 {
+		w.Write(plusBytes)
+	}
+	w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
+	w.Write(iBytes)
+	w.Write(closeParenBytes)
+}
+
+// printHexPtr outputs a uintptr formatted as hexadecimal with a leading '0x'
+// prefix to Writer w.
+func printHexPtr(w io.Writer, p uintptr) {
+	// Null pointer.
+	num := uint64(p)
+	if num == 0 {
+		w.Write(nilAngleBytes)
+		return
+	}
+
+	// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
+	buf := make([]byte, 18)
+
+	// It's simpler to construct the hex string right to left.
+	base := uint64(16)
+	i := len(buf) - 1
+	for num >= base {
+		buf[i] = hexDigits[num%base]
+		num /= base
+		i--
+	}
+	buf[i] = hexDigits[num]
+
+	// Add '0x' prefix.
+	i--
+	buf[i] = 'x'
+	i--
+	buf[i] = '0'
+
+	// Strip unused leading bytes.
+	buf = buf[i:]
+	w.Write(buf)
+}
+
+// valuesSorter implements sort.Interface to allow a slice of reflect.Value
+// elements to be sorted.
+type valuesSorter struct {
+	values  []reflect.Value
+	strings []string // either nil or same len and values
+	cs      *ConfigState
+}
+
+// newValuesSorter initializes a valuesSorter instance, which holds a set of
+// surrogate keys on which the data should be sorted.  It uses flags in
+// ConfigState to decide if and how to populate those surrogate keys.
+func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
+	vs := &valuesSorter{values: values, cs: cs}
+	if canSortSimply(vs.values[0].Kind()) {
+		return vs
+	}
+	if !cs.DisableMethods {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			b := bytes.Buffer{}
+			if !handleMethods(cs, &b, vs.values[i]) {
+				vs.strings = nil
+				break
+			}
+			vs.strings[i] = b.String()
+		}
+	}
+	if vs.strings == nil && cs.SpewKeys {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
+		}
+	}
+	return vs
+}
+
+// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
+// directly, or whether it should be considered for sorting by surrogate keys
+// (if the ConfigState allows it).
+func canSortSimply(kind reflect.Kind) bool {
+	// This switch parallels valueSortLess, except for the default case.
+	switch kind {
+	case reflect.Bool:
+		return true
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return true
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return true
+	case reflect.Float32, reflect.Float64:
+		return true
+	case reflect.String:
+		return true
+	case reflect.Uintptr:
+		return true
+	case reflect.Array:
+		return true
+	}
+	return false
+}
+
+// Len returns the number of values in the slice.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Len() int {
+	return len(s.values)
+}
+
+// Swap swaps the values at the passed indices.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Swap(i, j int) {
+	s.values[i], s.values[j] = s.values[j], s.values[i]
+	if s.strings != nil {
+		s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
+	}
+}
+
+// valueSortLess returns whether the first value should sort before the second
+// value.  It is used by valueSorter.Less as part of the sort.Interface
+// implementation.
+func valueSortLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return a.Int() < b.Int()
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return a.Uint() < b.Uint()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.String:
+		return a.String() < b.String()
+	case reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Array:
+		// Compare the contents of both arrays.
+		l := a.Len()
+		for i := 0; i < l; i++ {
+			av := a.Index(i)
+			bv := b.Index(i)
+			if av.Interface() == bv.Interface() {
+				continue
+			}
+			return valueSortLess(av, bv)
+		}
+	}
+	return a.String() < b.String()
+}
+
+// Less returns whether the value at index i should sort before the
+// value at index j.  It is part of the sort.Interface implementation.
+func (s *valuesSorter) Less(i, j int) bool {
+	if s.strings == nil {
+		return valueSortLess(s.values[i], s.values[j])
+	}
+	return s.strings[i] < s.strings[j]
+}
+
+// sortValues is a sort function that handles both native types and any type that
+// can be converted to error or Stringer.  Other inputs are sorted according to
+// their Value.String() value to ensure display stability.
+func sortValues(values []reflect.Value, cs *ConfigState) {
+	if len(values) == 0 {
+		return
+	}
+	sort.Sort(newValuesSorter(values, cs))
+}

server/vendor/github.com/davecgh/go-spew/spew/config.go

@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+// ConfigState houses the configuration options used by spew to format and
+// display values.  There is a global instance, Config, that is used to control
+// all top-level Formatter and Dump functionality.  Each ConfigState instance
+// provides methods equivalent to the top-level functions.
+//
+// The zero value for ConfigState provides no indentation.  You would typically
+// want to set it to a space or a tab.
+//
+// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
+// with default settings.  See the documentation of NewDefaultConfig for default
+// values.
+type ConfigState struct {
+	// Indent specifies the string to use for each indentation level.  The
+	// global config instance that all top-level functions use set this to a
+	// single space by default.  If you would like more indentation, you might
+	// set this to a tab with "\t" or perhaps two spaces with "  ".
+	Indent string
+
+	// MaxDepth controls the maximum number of levels to descend into nested
+	// data structures.  The default, 0, means there is no limit.
+	//
+	// NOTE: Circular data structures are properly detected, so it is not
+	// necessary to set this value unless you specifically want to limit deeply
+	// nested data structures.
+	MaxDepth int
+
+	// DisableMethods specifies whether or not error and Stringer interfaces are
+	// invoked for types that implement them.
+	DisableMethods bool
+
+	// DisablePointerMethods specifies whether or not to check for and invoke
+	// error and Stringer interfaces on types which only accept a pointer
+	// receiver when the current type is not a pointer.
+	//
+	// NOTE: This might be an unsafe action since calling one of these methods
+	// with a pointer receiver could technically mutate the value, however,
+	// in practice, types which choose to satisify an error or Stringer
+	// interface with a pointer receiver should not be mutating their state
+	// inside these interface methods.  As a result, this option relies on
+	// access to the unsafe package, so it will not have any effect when
+	// running in environments without access to the unsafe package such as
+	// Google App Engine or with the "safe" build tag specified.
+	DisablePointerMethods bool
+
+	// DisablePointerAddresses specifies whether to disable the printing of
+	// pointer addresses. This is useful when diffing data structures in tests.
+	DisablePointerAddresses bool
+
+	// DisableCapacities specifies whether to disable the printing of capacities
+	// for arrays, slices, maps and channels. This is useful when diffing
+	// data structures in tests.
+	DisableCapacities bool
+
+	// ContinueOnMethod specifies whether or not recursion should continue once
+	// a custom error or Stringer interface is invoked.  The default, false,
+	// means it will print the results of invoking the custom error or Stringer
+	// interface and return immediately instead of continuing to recurse into
+	// the internals of the data type.
+	//
+	// NOTE: This flag does not have any effect if method invocation is disabled
+	// via the DisableMethods or DisablePointerMethods options.
+	ContinueOnMethod bool
+
+	// SortKeys specifies map keys should be sorted before being printed. Use
+	// this to have a more deterministic, diffable output.  Note that only
+	// native types (bool, int, uint, floats, uintptr and string) and types
+	// that support the error or Stringer interfaces (if methods are
+	// enabled) are supported, with other types sorted according to the
+	// reflect.Value.String() output which guarantees display stability.
+	SortKeys bool
+
+	// SpewKeys specifies that, as a last resort attempt, map keys should
+	// be spewed to strings and sorted by those strings.  This is only
+	// considered if SortKeys is true.
+	SpewKeys bool
+}
+
+// Config is the active configuration of the top-level functions.
+// The configuration can be changed by modifying the contents of spew.Config.
+var Config = ConfigState{Indent: " "}
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the formatted string as a value that satisfies error.  See NewFormatter
+// for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, c.convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, c.convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, c.convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a Formatter interface returned by c.NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, c.convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(c.convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, c.convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(c.convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprint(a ...interface{}) string {
+	return fmt.Sprint(c.convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, c.convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a Formatter interface returned by c.NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(c.convertArgs(a)...)
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+c.Printf, c.Println, or c.Printf.
+*/
+func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(c, v)
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
+	fdump(c, w, a...)
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by modifying the public members
+of c.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func (c *ConfigState) Dump(a ...interface{}) {
+	fdump(c, os.Stdout, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func (c *ConfigState) Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(c, &buf, a...)
+	return buf.String()
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a spew Formatter interface using
+// the ConfigState associated with s.
+func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = newFormatter(c, arg)
+	}
+	return formatters
+}
+
+// NewDefaultConfig returns a ConfigState with the following default settings.
+//
+// 	Indent: " "
+// 	MaxDepth: 0
+// 	DisableMethods: false
+// 	DisablePointerMethods: false
+// 	ContinueOnMethod: false
+// 	SortKeys: false
+func NewDefaultConfig() *ConfigState {
+	return &ConfigState{Indent: " "}
+}

server/vendor/github.com/davecgh/go-spew/spew/doc.go

@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+Package spew implements a deep pretty printer for Go data structures to aid in
+debugging.
+
+A quick overview of the additional features spew provides over the built-in
+printing facilities for Go data types are as follows:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output (only when using
+	  Dump style)
+
+There are two different approaches spew allows for dumping Go data structures:
+
+	* Dump style which prints with newlines, customizable indentation,
+	  and additional debug information such as types and all pointer addresses
+	  used to indirect to the final value
+	* A custom Formatter interface that integrates cleanly with the standard fmt
+	  package and replaces %v, %+v, %#v, and %#+v to provide inline printing
+	  similar to the default %v while providing the additional functionality
+	  outlined above and passing unsupported format verbs such as %x and %q
+	  along to fmt
+
+Quick Start
+
+This section demonstrates how to quickly get started with spew.  See the
+sections below for further details on formatting and configuration options.
+
+To dump a variable with full newlines, indentation, type, and pointer
+information use Dump, Fdump, or Sdump:
+	spew.Dump(myVar1, myVar2, ...)
+	spew.Fdump(someWriter, myVar1, myVar2, ...)
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Alternatively, if you would prefer to use format strings with a compacted inline
+printing style, use the convenience wrappers Printf, Fprintf, etc with
+%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
+%#+v (adds types and pointer addresses):
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+Configuration Options
+
+Configuration of spew is handled by fields in the ConfigState type.  For
+convenience, all of the top-level functions use a global state available
+via the spew.Config global.
+
+It is also possible to create a ConfigState instance that provides methods
+equivalent to the top-level functions.  This allows concurrent configuration
+options.  See the ConfigState documentation for more details.
+
+The following configuration options are available:
+	* Indent
+		String to use for each indentation level for Dump functions.
+		It is a single space by default.  A popular alternative is "\t".
+
+	* MaxDepth
+		Maximum number of levels to descend into nested data structures.
+		There is no limit by default.
+
+	* DisableMethods
+		Disables invocation of error and Stringer interface methods.
+		Method invocation is enabled by default.
+
+	* DisablePointerMethods
+		Disables invocation of error and Stringer interface methods on types
+		which only accept pointer receivers from non-pointer variables.
+		Pointer method invocation is enabled by default.
+
+	* DisablePointerAddresses
+		DisablePointerAddresses specifies whether to disable the printing of
+		pointer addresses. This is useful when diffing data structures in tests.
+
+	* DisableCapacities
+		DisableCapacities specifies whether to disable the printing of
+		capacities for arrays, slices, maps and channels. This is useful when
+		diffing data structures in tests.
+
+	* ContinueOnMethod
+		Enables recursion into types after invoking error and Stringer interface
+		methods. Recursion after method invocation is disabled by default.
+
+	* SortKeys
+		Specifies map keys should be sorted before being printed. Use
+		this to have a more deterministic, diffable output.  Note that
+		only native types (bool, int, uint, floats, uintptr and string)
+		and types which implement error or Stringer interfaces are
+		supported with other types sorted according to the
+		reflect.Value.String() output which guarantees display
+		stability.  Natural map order is used by default.
+
+	* SpewKeys
+		Specifies that, as a last resort attempt, map keys should be
+		spewed to strings and sorted by those strings.  This is only
+		considered if SortKeys is true.
+
+Dump Usage
+
+Simply call spew.Dump with a list of variables you want to dump:
+
+	spew.Dump(myVar1, myVar2, ...)
+
+You may also call spew.Fdump if you would prefer to output to an arbitrary
+io.Writer.  For example, to dump to standard error:
+
+	spew.Fdump(os.Stderr, myVar1, myVar2, ...)
+
+A third option is to call spew.Sdump to get the formatted output as a string:
+
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Sample Dump Output
+
+See the Dump example for details on the setup of the types and variables being
+shown here.
+
+	(main.Foo) {
+	 unexportedField: (*main.Bar)(0xf84002e210)({
+	  flag: (main.Flag) flagTwo,
+	  data: (uintptr) <nil>
+	 }),
+	 ExportedField: (map[interface {}]interface {}) (len=1) {
+	  (string) (len=3) "one": (bool) true
+	 }
+	}
+
+Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
+command as shown.
+	([]uint8) (len=32 cap=32) {
+	 00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
+	 00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
+	 00000020  31 32                                             |12|
+	}
+
+Custom Formatter
+
+Spew provides a custom formatter that implements the fmt.Formatter interface
+so that it integrates cleanly with standard fmt package printing functions. The
+formatter is useful for inline printing of smaller data types similar to the
+standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Custom Formatter Usage
+
+The simplest way to make use of the spew custom formatter is to call one of the
+convenience functions such as spew.Printf, spew.Println, or spew.Printf.  The
+functions have syntax you are most likely already familiar with:
+
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Println(myVar, myVar2)
+	spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+See the Index for the full list convenience functions.
+
+Sample Formatter Output
+
+Double pointer to a uint8:
+	  %v: <**>5
+	 %+v: <**>(0xf8400420d0->0xf8400420c8)5
+	 %#v: (**uint8)5
+	%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
+
+Pointer to circular struct with a uint8 field and a pointer to itself:
+	  %v: <*>{1 <*><shown>}
+	 %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
+	 %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
+	%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
+
+See the Printf example for details on the setup of variables being shown
+here.
+
+Errors
+
+Since it is possible for custom Stringer/error interfaces to panic, spew
+detects them and handles them internally by printing the panic information
+inline with the output.  Since spew is intended to provide deep pretty printing
+capabilities on structures, it intentionally does not return any errors.
+*/
+package spew

server/vendor/github.com/davecgh/go-spew/spew/dump.go

@@ -0,0 +1,509 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	// uint8Type is a reflect.Type representing a uint8.  It is used to
+	// convert cgo types to uint8 slices for hexdumping.
+	uint8Type = reflect.TypeOf(uint8(0))
+
+	// cCharRE is a regular expression that matches a cgo char.
+	// It is used to detect character arrays to hexdump them.
+	cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`)
+
+	// cUnsignedCharRE is a regular expression that matches a cgo unsigned
+	// char.  It is used to detect unsigned character arrays to hexdump
+	// them.
+	cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`)
+
+	// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
+	// It is used to detect uint8_t arrays to hexdump them.
+	cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`)
+)
+
+// dumpState contains information about the state of a dump operation.
+type dumpState struct {
+	w                io.Writer
+	depth            int
+	pointers         map[uintptr]int
+	ignoreNextType   bool
+	ignoreNextIndent bool
+	cs               *ConfigState
+}
+
+// indent performs indentation according to the depth level and cs.Indent
+// option.
+func (d *dumpState) indent() {
+	if d.ignoreNextIndent {
+		d.ignoreNextIndent = false
+		return
+	}
+	d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface && !v.IsNil() {
+		v = v.Elem()
+	}
+	return v
+}
+
+// dumpPtr handles formatting of pointers by indirecting them as necessary.
+func (d *dumpState) dumpPtr(v reflect.Value) {
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range d.pointers {
+		if depth >= d.depth {
+			delete(d.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by dereferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := d.pointers[addr]; ok && pd < d.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		d.pointers[addr] = d.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type information.
+	d.w.Write(openParenBytes)
+	d.w.Write(bytes.Repeat(asteriskBytes, indirects))
+	d.w.Write([]byte(ve.Type().String()))
+	d.w.Write(closeParenBytes)
+
+	// Display pointer information.
+	if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 {
+		d.w.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				d.w.Write(pointerChainBytes)
+			}
+			printHexPtr(d.w, addr)
+		}
+		d.w.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	d.w.Write(openParenBytes)
+	switch {
+	case nilFound:
+		d.w.Write(nilAngleBytes)
+
+	case cycleFound:
+		d.w.Write(circularBytes)
+
+	default:
+		d.ignoreNextType = true
+		d.dump(ve)
+	}
+	d.w.Write(closeParenBytes)
+}
+
+// dumpSlice handles formatting of arrays and slices.  Byte (uint8 under
+// reflection) arrays and slices are dumped in hexdump -C fashion.
+func (d *dumpState) dumpSlice(v reflect.Value) {
+	// Determine whether this type should be hex dumped or not.  Also,
+	// for types which should be hexdumped, try to use the underlying data
+	// first, then fall back to trying to convert them to a uint8 slice.
+	var buf []uint8
+	doConvert := false
+	doHexDump := false
+	numEntries := v.Len()
+	if numEntries > 0 {
+		vt := v.Index(0).Type()
+		vts := vt.String()
+		switch {
+		// C types that need to be converted.
+		case cCharRE.MatchString(vts):
+			fallthrough
+		case cUnsignedCharRE.MatchString(vts):
+			fallthrough
+		case cUint8tCharRE.MatchString(vts):
+			doConvert = true
+
+		// Try to use existing uint8 slices and fall back to converting
+		// and copying if that fails.
+		case vt.Kind() == reflect.Uint8:
+			// We need an addressable interface to convert the type
+			// to a byte slice.  However, the reflect package won't
+			// give us an interface on certain things like
+			// unexported struct fields in order to enforce
+			// visibility rules.  We use unsafe, when available, to
+			// bypass these restrictions since this package does not
+			// mutate the values.
+			vs := v
+			if !vs.CanInterface() || !vs.CanAddr() {
+				vs = unsafeReflectValue(vs)
+			}
+			if !UnsafeDisabled {
+				vs = vs.Slice(0, numEntries)
+
+				// Use the existing uint8 slice if it can be
+				// type asserted.
+				iface := vs.Interface()
+				if slice, ok := iface.([]uint8); ok {
+					buf = slice
+					doHexDump = true
+					break
+				}
+			}
+
+			// The underlying data needs to be converted if it can't
+			// be type asserted to a uint8 slice.
+			doConvert = true
+		}
+
+		// Copy and convert the underlying type if needed.
+		if doConvert && vt.ConvertibleTo(uint8Type) {
+			// Convert and copy each element into a uint8 byte
+			// slice.
+			buf = make([]uint8, numEntries)
+			for i := 0; i < numEntries; i++ {
+				vv := v.Index(i)
+				buf[i] = uint8(vv.Convert(uint8Type).Uint())
+			}
+			doHexDump = true
+		}
+	}
+
+	// Hexdump the entire slice as needed.
+	if doHexDump {
+		indent := strings.Repeat(d.cs.Indent, d.depth)
+		str := indent + hex.Dump(buf)
+		str = strings.Replace(str, "\n", "\n"+indent, -1)
+		str = strings.TrimRight(str, d.cs.Indent)
+		d.w.Write([]byte(str))
+		return
+	}
+
+	// Recursively call dump for each item.
+	for i := 0; i < numEntries; i++ {
+		d.dump(d.unpackValue(v.Index(i)))
+		if i < (numEntries - 1) {
+			d.w.Write(commaNewlineBytes)
+		} else {
+			d.w.Write(newlineBytes)
+		}
+	}
+}
+
+// dump is the main workhorse for dumping a value.  It uses the passed reflect
+// value to figure out what kind of object we are dealing with and formats it
+// appropriately.  It is a recursive function, however circular data structures
+// are detected and handled properly.
+func (d *dumpState) dump(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		d.w.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		d.indent()
+		d.dumpPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !d.ignoreNextType {
+		d.indent()
+		d.w.Write(openParenBytes)
+		d.w.Write([]byte(v.Type().String()))
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+	d.ignoreNextType = false
+
+	// Display length and capacity if the built-in len and cap functions
+	// work with the value's kind and the len/cap itself is non-zero.
+	valueLen, valueCap := 0, 0
+	switch v.Kind() {
+	case reflect.Array, reflect.Slice, reflect.Chan:
+		valueLen, valueCap = v.Len(), v.Cap()
+	case reflect.Map, reflect.String:
+		valueLen = v.Len()
+	}
+	if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 {
+		d.w.Write(openParenBytes)
+		if valueLen != 0 {
+			d.w.Write(lenEqualsBytes)
+			printInt(d.w, int64(valueLen), 10)
+		}
+		if !d.cs.DisableCapacities && valueCap != 0 {
+			if valueLen != 0 {
+				d.w.Write(spaceBytes)
+			}
+			d.w.Write(capEqualsBytes)
+			printInt(d.w, int64(valueCap), 10)
+		}
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+
+	// Call Stringer/error interfaces if they exist and the handle methods flag
+	// is enabled
+	if !d.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(d.cs, d.w, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(d.w, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(d.w, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(d.w, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(d.w, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(d.w, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(d.w, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(d.w, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			d.dumpSlice(v)
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.String:
+		d.w.Write([]byte(strconv.Quote(v.String())))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			numEntries := v.Len()
+			keys := v.MapKeys()
+			if d.cs.SortKeys {
+				sortValues(keys, d.cs)
+			}
+			for i, key := range keys {
+				d.dump(d.unpackValue(key))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.MapIndex(key)))
+				if i < (numEntries - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Struct:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			vt := v.Type()
+			numFields := v.NumField()
+			for i := 0; i < numFields; i++ {
+				d.indent()
+				vtf := vt.Field(i)
+				d.w.Write([]byte(vtf.Name))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.Field(i)))
+				if i < (numFields - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(d.w, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(d.w, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it in case any new
+	// types are added.
+	default:
+		if v.CanInterface() {
+			fmt.Fprintf(d.w, "%v", v.Interface())
+		} else {
+			fmt.Fprintf(d.w, "%v", v.String())
+		}
+	}
+}
+
+// fdump is a helper function to consolidate the logic from the various public
+// methods which take varying writers and config states.
+func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
+	for _, arg := range a {
+		if arg == nil {
+			w.Write(interfaceBytes)
+			w.Write(spaceBytes)
+			w.Write(nilAngleBytes)
+			w.Write(newlineBytes)
+			continue
+		}
+
+		d := dumpState{w: w, cs: cs}
+		d.pointers = make(map[uintptr]int)
+		d.dump(reflect.ValueOf(arg))
+		d.w.Write(newlineBytes)
+	}
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func Fdump(w io.Writer, a ...interface{}) {
+	fdump(&Config, w, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(&Config, &buf, a...)
+	return buf.String()
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by an exported package global,
+spew.Config.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func Dump(a ...interface{}) {
+	fdump(&Config, os.Stdout, a...)
+}

server/vendor/github.com/davecgh/go-spew/spew/format.go

@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+// supportedFlags is a list of all the character flags supported by fmt package.
+const supportedFlags = "0-+# "
+
+// formatState implements the fmt.Formatter interface and contains information
+// about the state of a formatting operation.  The NewFormatter function can
+// be used to get a new Formatter which can be used directly as arguments
+// in standard fmt package printing calls.
+type formatState struct {
+	value          interface{}
+	fs             fmt.State
+	depth          int
+	pointers       map[uintptr]int
+	ignoreNextType bool
+	cs             *ConfigState
+}
+
+// buildDefaultFormat recreates the original format string without precision
+// and width information to pass in to fmt.Sprintf in the case of an
+// unrecognized type.  Unless new types are added to the language, this
+// function won't ever be called.
+func (f *formatState) buildDefaultFormat() (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	buf.WriteRune('v')
+
+	format = buf.String()
+	return format
+}
+
+// constructOrigFormat recreates the original format string including precision
+// and width information to pass along to the standard fmt package.  This allows
+// automatic deferral of all format strings this package doesn't support.
+func (f *formatState) constructOrigFormat(verb rune) (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	if width, ok := f.fs.Width(); ok {
+		buf.WriteString(strconv.Itoa(width))
+	}
+
+	if precision, ok := f.fs.Precision(); ok {
+		buf.Write(precisionBytes)
+		buf.WriteString(strconv.Itoa(precision))
+	}
+
+	buf.WriteRune(verb)
+
+	format = buf.String()
+	return format
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible and
+// ensures that types for values which have been unpacked from an interface
+// are displayed when the show types flag is also set.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface {
+		f.ignoreNextType = false
+		if !v.IsNil() {
+			v = v.Elem()
+		}
+	}
+	return v
+}
+
+// formatPtr handles formatting of pointers by indirecting them as necessary.
+func (f *formatState) formatPtr(v reflect.Value) {
+	// Display nil if top level pointer is nil.
+	showTypes := f.fs.Flag('#')
+	if v.IsNil() && (!showTypes || f.ignoreNextType) {
+		f.fs.Write(nilAngleBytes)
+		return
+	}
+
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range f.pointers {
+		if depth >= f.depth {
+			delete(f.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to possibly show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by derferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := f.pointers[addr]; ok && pd < f.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		f.pointers[addr] = f.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type or indirection level depending on flags.
+	if showTypes && !f.ignoreNextType {
+		f.fs.Write(openParenBytes)
+		f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
+		f.fs.Write([]byte(ve.Type().String()))
+		f.fs.Write(closeParenBytes)
+	} else {
+		if nilFound || cycleFound {
+			indirects += strings.Count(ve.Type().String(), "*")
+		}
+		f.fs.Write(openAngleBytes)
+		f.fs.Write([]byte(strings.Repeat("*", indirects)))
+		f.fs.Write(closeAngleBytes)
+	}
+
+	// Display pointer information depending on flags.
+	if f.fs.Flag('+') && (len(pointerChain) > 0) {
+		f.fs.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				f.fs.Write(pointerChainBytes)
+			}
+			printHexPtr(f.fs, addr)
+		}
+		f.fs.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	switch {
+	case nilFound:
+		f.fs.Write(nilAngleBytes)
+
+	case cycleFound:
+		f.fs.Write(circularShortBytes)
+
+	default:
+		f.ignoreNextType = true
+		f.format(ve)
+	}
+}
+
+// format is the main workhorse for providing the Formatter interface.  It
+// uses the passed reflect value to figure out what kind of object we are
+// dealing with and formats it appropriately.  It is a recursive function,
+// however circular data structures are detected and handled properly.
+func (f *formatState) format(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		f.fs.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		f.formatPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !f.ignoreNextType && f.fs.Flag('#') {
+		f.fs.Write(openParenBytes)
+		f.fs.Write([]byte(v.Type().String()))
+		f.fs.Write(closeParenBytes)
+	}
+	f.ignoreNextType = false
+
+	// Call Stringer/error interfaces if they exist and the handle methods
+	// flag is enabled.
+	if !f.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(f.cs, f.fs, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(f.fs, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(f.fs, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(f.fs, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(f.fs, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(f.fs, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(f.fs, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(f.fs, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		f.fs.Write(openBracketBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			numEntries := v.Len()
+			for i := 0; i < numEntries; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.Index(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBracketBytes)
+
+	case reflect.String:
+		f.fs.Write([]byte(v.String()))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+
+		f.fs.Write(openMapBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			keys := v.MapKeys()
+			if f.cs.SortKeys {
+				sortValues(keys, f.cs)
+			}
+			for i, key := range keys {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(key))
+				f.fs.Write(colonBytes)
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.MapIndex(key)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeMapBytes)
+
+	case reflect.Struct:
+		numFields := v.NumField()
+		f.fs.Write(openBraceBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			vt := v.Type()
+			for i := 0; i < numFields; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				vtf := vt.Field(i)
+				if f.fs.Flag('+') || f.fs.Flag('#') {
+					f.fs.Write([]byte(vtf.Name))
+					f.fs.Write(colonBytes)
+				}
+				f.format(f.unpackValue(v.Field(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(f.fs, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(f.fs, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it if any get added.
+	default:
+		format := f.buildDefaultFormat()
+		if v.CanInterface() {
+			fmt.Fprintf(f.fs, format, v.Interface())
+		} else {
+			fmt.Fprintf(f.fs, format, v.String())
+		}
+	}
+}
+
+// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
+// details.
+func (f *formatState) Format(fs fmt.State, verb rune) {
+	f.fs = fs
+
+	// Use standard formatting for verbs that are not v.
+	if verb != 'v' {
+		format := f.constructOrigFormat(verb)
+		fmt.Fprintf(fs, format, f.value)
+		return
+	}
+
+	if f.value == nil {
+		if fs.Flag('#') {
+			fs.Write(interfaceBytes)
+		}
+		fs.Write(nilAngleBytes)
+		return
+	}
+
+	f.format(reflect.ValueOf(f.value))
+}
+
+// newFormatter is a helper function to consolidate the logic from the various
+// public methods which take varying config states.
+func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
+	fs := &formatState{value: v, cs: cs}
+	fs.pointers = make(map[uintptr]int)
+	return fs
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+Printf, Println, or Fprintf.
+*/
+func NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(&Config, v)
+}

server/vendor/github.com/davecgh/go-spew/spew/spew.go

@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"fmt"
+	"io"
+)
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the formatted string as a value that satisfies error.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a default Formatter interface returned by NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
+func Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
+func Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprint(a ...interface{}) string {
+	return fmt.Sprint(convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(convertArgs(a)...)
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a default spew Formatter interface.
+func convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = NewFormatter(arg)
+	}
+	return formatters
+}

server/vendor/github.com/google/uuid/.travis.yml

@@ -0,0 +1,9 @@
+language: go
+
+go:
+  - 1.4.3
+  - 1.5.3
+  - tip
+
+script:
+  - go test -v ./...

server/vendor/github.com/google/uuid/CONTRIBUTING.md

@@ -0,0 +1,10 @@
+# How to contribute
+
+We definitely welcome patches and contribution to this project!
+
+### Legal requirements
+
+In order to protect both you and ourselves, you will need to sign the
+[Contributor License Agreement](https://cla.developers.google.com/clas).
+
+You may have already signed it for other Google projects.

server/vendor/github.com/google/uuid/CONTRIBUTORS

@@ -0,0 +1,9 @@
+Paul Borman <borman@google.com>
+bmatsuo
+shawnps
+theory
+jboverfelt
+dsymonds
+cd1
+wallclockbuilder
+dansouza

server/vendor/github.com/google/uuid/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009,2014 Google Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

server/vendor/github.com/google/uuid/README.md

@@ -0,0 +1,19 @@
+# uuid ![build status](https://travis-ci.org/google/uuid.svg?branch=master)
+The uuid package generates and inspects UUIDs based on
+[RFC 4122](http://tools.ietf.org/html/rfc4122)
+and DCE 1.1: Authentication and Security Services. 
+
+This package is based on the github.com/pborman/uuid package (previously named
+code.google.com/p/go-uuid).  It differs from these earlier packages in that
+a UUID is a 16 byte array rather than a byte slice.  One loss due to this
+change is the ability to represent an invalid UUID (vs a NIL UUID).
+
+###### Install
+`go get github.com/google/uuid`
+
+###### Documentation 
+[![GoDoc](https://godoc.org/github.com/google/uuid?status.svg)](http://godoc.org/github.com/google/uuid)
+
+Full `go doc` style documentation for the package can be viewed online without
+installing this package by using the GoDoc site here: 
+http://pkg.go.dev/github.com/google/uuid

server/vendor/github.com/google/uuid/dce.go

@@ -0,0 +1,80 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+	"fmt"
+	"os"
+)
+
+// A Domain represents a Version 2 domain
+type Domain byte
+
+// Domain constants for DCE Security (Version 2) UUIDs.
+const (
+	Person = Domain(0)
+	Group  = Domain(1)
+	Org    = Domain(2)
+)
+
+// NewDCESecurity returns a DCE Security (Version 2) UUID.
+//
+// The domain should be one of Person, Group or Org.
+// On a POSIX system the id should be the users UID for the Person
+// domain and the users GID for the Group.  The meaning of id for
+// the domain Org or on non-POSIX systems is site defined.
+//
+// For a given domain/id pair the same token may be returned for up to
+// 7 minutes and 10 seconds.
+func NewDCESecurity(domain Domain, id uint32) (UUID, error) {
+	uuid, err := NewUUID()
+	if err == nil {
+		uuid[6] = (uuid[6] & 0x0f) | 0x20 // Version 2
+		uuid[9] = byte(domain)
+		binary.BigEndian.PutUint32(uuid[0:], id)
+	}
+	return uuid, err
+}
+
+// NewDCEPerson returns a DCE Security (Version 2) UUID in the person
+// domain with the id returned by os.Getuid.
+//
+//  NewDCESecurity(Person, uint32(os.Getuid()))
+func NewDCEPerson() (UUID, error) {
+	return NewDCESecurity(Person, uint32(os.Getuid()))
+}
+
+// NewDCEGroup returns a DCE Security (Version 2) UUID in the group
+// domain with the id returned by os.Getgid.
+//
+//  NewDCESecurity(Group, uint32(os.Getgid()))
+func NewDCEGroup() (UUID, error) {
+	return NewDCESecurity(Group, uint32(os.Getgid()))
+}
+
+// Domain returns the domain for a Version 2 UUID.  Domains are only defined
+// for Version 2 UUIDs.
+func (uuid UUID) Domain() Domain {
+	return Domain(uuid[9])
+}
+
+// ID returns the id for a Version 2 UUID. IDs are only defined for Version 2
+// UUIDs.
+func (uuid UUID) ID() uint32 {
+	return binary.BigEndian.Uint32(uuid[0:4])
+}
+
+func (d Domain) String() string {
+	switch d {
+	case Person:
+		return "Person"
+	case Group:
+		return "Group"
+	case Org:
+		return "Org"
+	}
+	return fmt.Sprintf("Domain%d", int(d))
+}

server/vendor/github.com/google/uuid/doc.go

@@ -0,0 +1,12 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package uuid generates and inspects UUIDs.
+//
+// UUIDs are based on RFC 4122 and DCE 1.1: Authentication and Security
+// Services.
+//
+// A UUID is a 16 byte (128 bit) array.  UUIDs may be used as keys to
+// maps or compared directly.
+package uuid

server/vendor/github.com/google/uuid/hash.go

@@ -0,0 +1,53 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"crypto/md5"
+	"crypto/sha1"
+	"hash"
+)
+
+// Well known namespace IDs and UUIDs
+var (
+	NameSpaceDNS  = Must(Parse("6ba7b810-9dad-11d1-80b4-00c04fd430c8"))
+	NameSpaceURL  = Must(Parse("6ba7b811-9dad-11d1-80b4-00c04fd430c8"))
+	NameSpaceOID  = Must(Parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8"))
+	NameSpaceX500 = Must(Parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8"))
+	Nil           UUID // empty UUID, all zeros
+)
+
+// NewHash returns a new UUID derived from the hash of space concatenated with
+// data generated by h.  The hash should be at least 16 byte in length.  The
+// first 16 bytes of the hash are used to form the UUID.  The version of the
+// UUID will be the lower 4 bits of version.  NewHash is used to implement
+// NewMD5 and NewSHA1.
+func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID {
+	h.Reset()
+	h.Write(space[:]) //nolint:errcheck
+	h.Write(data)     //nolint:errcheck
+	s := h.Sum(nil)
+	var uuid UUID
+	copy(uuid[:], s)
+	uuid[6] = (uuid[6] & 0x0f) | uint8((version&0xf)<<4)
+	uuid[8] = (uuid[8] & 0x3f) | 0x80 // RFC 4122 variant
+	return uuid
+}
+
+// NewMD5 returns a new MD5 (Version 3) UUID based on the
+// supplied name space and data.  It is the same as calling:
+//
+//  NewHash(md5.New(), space, data, 3)
+func NewMD5(space UUID, data []byte) UUID {
+	return NewHash(md5.New(), space, data, 3)
+}
+
+// NewSHA1 returns a new SHA1 (Version 5) UUID based on the
+// supplied name space and data.  It is the same as calling:
+//
+//  NewHash(sha1.New(), space, data, 5)
+func NewSHA1(space UUID, data []byte) UUID {
+	return NewHash(sha1.New(), space, data, 5)
+}

server/vendor/github.com/google/uuid/marshal.go

@@ -0,0 +1,38 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import "fmt"
+
+// MarshalText implements encoding.TextMarshaler.
+func (uuid UUID) MarshalText() ([]byte, error) {
+	var js [36]byte
+	encodeHex(js[:], uuid)
+	return js[:], nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (uuid *UUID) UnmarshalText(data []byte) error {
+	id, err := ParseBytes(data)
+	if err != nil {
+		return err
+	}
+	*uuid = id
+	return nil
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (uuid UUID) MarshalBinary() ([]byte, error) {
+	return uuid[:], nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (uuid *UUID) UnmarshalBinary(data []byte) error {
+	if len(data) != 16 {
+		return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+	}
+	copy(uuid[:], data)
+	return nil
+}

server/vendor/github.com/google/uuid/node.go

@@ -0,0 +1,90 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"sync"
+)
+
+var (
+	nodeMu sync.Mutex
+	ifname string  // name of interface being used
+	nodeID [6]byte // hardware for version 1 UUIDs
+	zeroID [6]byte // nodeID with only 0's
+)
+
+// NodeInterface returns the name of the interface from which the NodeID was
+// derived.  The interface "user" is returned if the NodeID was set by
+// SetNodeID.
+func NodeInterface() string {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	return ifname
+}
+
+// SetNodeInterface selects the hardware address to be used for Version 1 UUIDs.
+// If name is "" then the first usable interface found will be used or a random
+// Node ID will be generated.  If a named interface cannot be found then false
+// is returned.
+//
+// SetNodeInterface never fails when name is "".
+func SetNodeInterface(name string) bool {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	return setNodeInterface(name)
+}
+
+func setNodeInterface(name string) bool {
+	iname, addr := getHardwareInterface(name) // null implementation for js
+	if iname != "" && addr != nil {
+		ifname = iname
+		copy(nodeID[:], addr)
+		return true
+	}
+
+	// We found no interfaces with a valid hardware address.  If name
+	// does not specify a specific interface generate a random Node ID
+	// (section 4.1.6)
+	if name == "" {
+		ifname = "random"
+		randomBits(nodeID[:])
+		return true
+	}
+	return false
+}
+
+// NodeID returns a slice of a copy of the current Node ID, setting the Node ID
+// if not already set.
+func NodeID() []byte {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	if nodeID == zeroID {
+		setNodeInterface("")
+	}
+	nid := nodeID
+	return nid[:]
+}
+
+// SetNodeID sets the Node ID to be used for Version 1 UUIDs.  The first 6 bytes
+// of id are used.  If id is less than 6 bytes then false is returned and the
+// Node ID is not set.
+func SetNodeID(id []byte) bool {
+	if len(id) < 6 {
+		return false
+	}
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	copy(nodeID[:], id)
+	ifname = "user"
+	return true
+}
+
+// NodeID returns the 6 byte node id encoded in uuid.  It returns nil if uuid is
+// not valid.  The NodeID is only well defined for version 1 and 2 UUIDs.
+func (uuid UUID) NodeID() []byte {
+	var node [6]byte
+	copy(node[:], uuid[10:])
+	return node[:]
+}

server/vendor/github.com/google/uuid/node_js.go

@@ -0,0 +1,12 @@
+// Copyright 2017 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build js
+
+package uuid
+
+// getHardwareInterface returns nil values for the JS version of the code.
+// This remvoves the "net" dependency, because it is not used in the browser.
+// Using the "net" library inflates the size of the transpiled JS code by 673k bytes.
+func getHardwareInterface(name string) (string, []byte) { return "", nil }

server/vendor/github.com/google/uuid/node_net.go

@@ -0,0 +1,33 @@
+// Copyright 2017 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !js
+
+package uuid
+
+import "net"
+
+var interfaces []net.Interface // cached list of interfaces
+
+// getHardwareInterface returns the name and hardware address of interface name.
+// If name is "" then the name and hardware address of one of the system's
+// interfaces is returned.  If no interfaces are found (name does not exist or
+// there are no interfaces) then "", nil is returned.
+//
+// Only addresses of at least 6 bytes are returned.
+func getHardwareInterface(name string) (string, []byte) {
+	if interfaces == nil {
+		var err error
+		interfaces, err = net.Interfaces()
+		if err != nil {
+			return "", nil
+		}
+	}
+	for _, ifs := range interfaces {
+		if len(ifs.HardwareAddr) >= 6 && (name == "" || name == ifs.Name) {
+			return ifs.Name, ifs.HardwareAddr
+		}
+	}
+	return "", nil
+}

server/vendor/github.com/google/uuid/null.go

@@ -0,0 +1,118 @@
+// Copyright 2021 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"bytes"
+	"database/sql/driver"
+	"encoding/json"
+	"fmt"
+)
+
+var jsonNull = []byte("null")
+
+// NullUUID represents a UUID that may be null.
+// NullUUID implements the SQL driver.Scanner interface so
+// it can be used as a scan destination:
+//
+//  var u uuid.NullUUID
+//  err := db.QueryRow("SELECT name FROM foo WHERE id=?", id).Scan(&u)
+//  ...
+//  if u.Valid {
+//     // use u.UUID
+//  } else {
+//     // NULL value
+//  }
+//
+type NullUUID struct {
+	UUID  UUID
+	Valid bool // Valid is true if UUID is not NULL
+}
+
+// Scan implements the SQL driver.Scanner interface.
+func (nu *NullUUID) Scan(value interface{}) error {
+	if value == nil {
+		nu.UUID, nu.Valid = Nil, false
+		return nil
+	}
+
+	err := nu.UUID.Scan(value)
+	if err != nil {
+		nu.Valid = false
+		return err
+	}
+
+	nu.Valid = true
+	return nil
+}
+
+// Value implements the driver Valuer interface.
+func (nu NullUUID) Value() (driver.Value, error) {
+	if !nu.Valid {
+		return nil, nil
+	}
+	// Delegate to UUID Value function
+	return nu.UUID.Value()
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (nu NullUUID) MarshalBinary() ([]byte, error) {
+	if nu.Valid {
+		return nu.UUID[:], nil
+	}
+
+	return []byte(nil), nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (nu *NullUUID) UnmarshalBinary(data []byte) error {
+	if len(data) != 16 {
+		return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+	}
+	copy(nu.UUID[:], data)
+	nu.Valid = true
+	return nil
+}
+
+// MarshalText implements encoding.TextMarshaler.
+func (nu NullUUID) MarshalText() ([]byte, error) {
+	if nu.Valid {
+		return nu.UUID.MarshalText()
+	}
+
+	return jsonNull, nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (nu *NullUUID) UnmarshalText(data []byte) error {
+	id, err := ParseBytes(data)
+	if err != nil {
+		nu.Valid = false
+		return err
+	}
+	nu.UUID = id
+	nu.Valid = true
+	return nil
+}
+
+// MarshalJSON implements json.Marshaler.
+func (nu NullUUID) MarshalJSON() ([]byte, error) {
+	if nu.Valid {
+		return json.Marshal(nu.UUID)
+	}
+
+	return jsonNull, nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (nu *NullUUID) UnmarshalJSON(data []byte) error {
+	if bytes.Equal(data, jsonNull) {
+		*nu = NullUUID{}
+		return nil // valid null UUID
+	}
+	err := json.Unmarshal(data, &nu.UUID)
+	nu.Valid = err == nil
+	return err
+}

server/vendor/github.com/google/uuid/sql.go

@@ -0,0 +1,59 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"database/sql/driver"
+	"fmt"
+)
+
+// Scan implements sql.Scanner so UUIDs can be read from databases transparently.
+// Currently, database types that map to string and []byte are supported. Please
+// consult database-specific driver documentation for matching types.
+func (uuid *UUID) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case nil:
+		return nil
+
+	case string:
+		// if an empty UUID comes from a table, we return a null UUID
+		if src == "" {
+			return nil
+		}
+
+		// see Parse for required string format
+		u, err := Parse(src)
+		if err != nil {
+			return fmt.Errorf("Scan: %v", err)
+		}
+
+		*uuid = u
+
+	case []byte:
+		// if an empty UUID comes from a table, we return a null UUID
+		if len(src) == 0 {
+			return nil
+		}
+
+		// assumes a simple slice of bytes if 16 bytes
+		// otherwise attempts to parse
+		if len(src) != 16 {
+			return uuid.Scan(string(src))
+		}
+		copy((*uuid)[:], src)
+
+	default:
+		return fmt.Errorf("Scan: unable to scan type %T into UUID", src)
+	}
+
+	return nil
+}
+
+// Value implements sql.Valuer so that UUIDs can be written to databases
+// transparently. Currently, UUIDs map to strings. Please consult
+// database-specific driver documentation for matching types.
+func (uuid UUID) Value() (driver.Value, error) {
+	return uuid.String(), nil
+}

server/vendor/github.com/google/uuid/time.go

@@ -0,0 +1,123 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+	"sync"
+	"time"
+)
+
+// A Time represents a time as the number of 100's of nanoseconds since 15 Oct
+// 1582.
+type Time int64
+
+const (
+	lillian    = 2299160          // Julian day of 15 Oct 1582
+	unix       = 2440587          // Julian day of 1 Jan 1970
+	epoch      = unix - lillian   // Days between epochs
+	g1582      = epoch * 86400    // seconds between epochs
+	g1582ns100 = g1582 * 10000000 // 100s of a nanoseconds between epochs
+)
+
+var (
+	timeMu   sync.Mutex
+	lasttime uint64 // last time we returned
+	clockSeq uint16 // clock sequence for this run
+
+	timeNow = time.Now // for testing
+)
+
+// UnixTime converts t the number of seconds and nanoseconds using the Unix
+// epoch of 1 Jan 1970.
+func (t Time) UnixTime() (sec, nsec int64) {
+	sec = int64(t - g1582ns100)
+	nsec = (sec % 10000000) * 100
+	sec /= 10000000
+	return sec, nsec
+}
+
+// GetTime returns the current Time (100s of nanoseconds since 15 Oct 1582) and
+// clock sequence as well as adjusting the clock sequence as needed.  An error
+// is returned if the current time cannot be determined.
+func GetTime() (Time, uint16, error) {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	return getTime()
+}
+
+func getTime() (Time, uint16, error) {
+	t := timeNow()
+
+	// If we don't have a clock sequence already, set one.
+	if clockSeq == 0 {
+		setClockSequence(-1)
+	}
+	now := uint64(t.UnixNano()/100) + g1582ns100
+
+	// If time has gone backwards with this clock sequence then we
+	// increment the clock sequence
+	if now <= lasttime {
+		clockSeq = ((clockSeq + 1) & 0x3fff) | 0x8000
+	}
+	lasttime = now
+	return Time(now), clockSeq, nil
+}
+
+// ClockSequence returns the current clock sequence, generating one if not
+// already set.  The clock sequence is only used for Version 1 UUIDs.
+//
+// The uuid package does not use global static storage for the clock sequence or
+// the last time a UUID was generated.  Unless SetClockSequence is used, a new
+// random clock sequence is generated the first time a clock sequence is
+// requested by ClockSequence, GetTime, or NewUUID.  (section 4.2.1.1)
+func ClockSequence() int {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	return clockSequence()
+}
+
+func clockSequence() int {
+	if clockSeq == 0 {
+		setClockSequence(-1)
+	}
+	return int(clockSeq & 0x3fff)
+}
+
+// SetClockSequence sets the clock sequence to the lower 14 bits of seq.  Setting to
+// -1 causes a new sequence to be generated.
+func SetClockSequence(seq int) {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	setClockSequence(seq)
+}
+
+func setClockSequence(seq int) {
+	if seq == -1 {
+		var b [2]byte
+		randomBits(b[:]) // clock sequence
+		seq = int(b[0])<<8 | int(b[1])
+	}
+	oldSeq := clockSeq
+	clockSeq = uint16(seq&0x3fff) | 0x8000 // Set our variant
+	if oldSeq != clockSeq {
+		lasttime = 0
+	}
+}
+
+// Time returns the time in 100s of nanoseconds since 15 Oct 1582 encoded in
+// uuid.  The time is only defined for version 1 and 2 UUIDs.
+func (uuid UUID) Time() Time {
+	time := int64(binary.BigEndian.Uint32(uuid[0:4]))
+	time |= int64(binary.BigEndian.Uint16(uuid[4:6])) << 32
+	time |= int64(binary.BigEndian.Uint16(uuid[6:8])&0xfff) << 48
+	return Time(time)
+}
+
+// ClockSequence returns the clock sequence encoded in uuid.
+// The clock sequence is only well defined for version 1 and 2 UUIDs.
+func (uuid UUID) ClockSequence() int {
+	return int(binary.BigEndian.Uint16(uuid[8:10])) & 0x3fff
+}

server/vendor/github.com/google/uuid/util.go

@@ -0,0 +1,43 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"io"
+)
+
+// randomBits completely fills slice b with random data.
+func randomBits(b []byte) {
+	if _, err := io.ReadFull(rander, b); err != nil {
+		panic(err.Error()) // rand should never fail
+	}
+}
+
+// xvalues returns the value of a byte as a hexadecimal digit or 255.
+var xvalues = [256]byte{
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255,
+	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+}
+
+// xtob converts hex characters x1 and x2 into a byte.
+func xtob(x1, x2 byte) (byte, bool) {
+	b1 := xvalues[x1]
+	b2 := xvalues[x2]
+	return (b1 << 4) | b2, b1 != 255 && b2 != 255
+}

server/vendor/github.com/google/uuid/uuid.go

@@ -0,0 +1,294 @@
+// Copyright 2018 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+	"sync"
+)
+
+// A UUID is a 128 bit (16 byte) Universal Unique IDentifier as defined in RFC
+// 4122.
+type UUID [16]byte
+
+// A Version represents a UUID's version.
+type Version byte
+
+// A Variant represents a UUID's variant.
+type Variant byte
+
+// Constants returned by Variant.
+const (
+	Invalid   = Variant(iota) // Invalid UUID
+	RFC4122                   // The variant specified in RFC4122
+	Reserved                  // Reserved, NCS backward compatibility.
+	Microsoft                 // Reserved, Microsoft Corporation backward compatibility.
+	Future                    // Reserved for future definition.
+)
+
+const randPoolSize = 16 * 16
+
+var (
+	rander      = rand.Reader // random function
+	poolEnabled = false
+	poolMu      sync.Mutex
+	poolPos     = randPoolSize     // protected with poolMu
+	pool        [randPoolSize]byte // protected with poolMu
+)
+
+type invalidLengthError struct{ len int }
+
+func (err invalidLengthError) Error() string {
+	return fmt.Sprintf("invalid UUID length: %d", err.len)
+}
+
+// IsInvalidLengthError is matcher function for custom error invalidLengthError
+func IsInvalidLengthError(err error) bool {
+	_, ok := err.(invalidLengthError)
+	return ok
+}
+
+// Parse decodes s into a UUID or returns an error.  Both the standard UUID
+// forms of xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and
+// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx are decoded as well as the
+// Microsoft encoding {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} and the raw hex
+// encoding: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
+func Parse(s string) (UUID, error) {
+	var uuid UUID
+	switch len(s) {
+	// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	case 36:
+
+	// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	case 36 + 9:
+		if strings.ToLower(s[:9]) != "urn:uuid:" {
+			return uuid, fmt.Errorf("invalid urn prefix: %q", s[:9])
+		}
+		s = s[9:]
+
+	// {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
+	case 36 + 2:
+		s = s[1:]
+
+	// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+	case 32:
+		var ok bool
+		for i := range uuid {
+			uuid[i], ok = xtob(s[i*2], s[i*2+1])
+			if !ok {
+				return uuid, errors.New("invalid UUID format")
+			}
+		}
+		return uuid, nil
+	default:
+		return uuid, invalidLengthError{len(s)}
+	}
+	// s is now at least 36 bytes long
+	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
+		return uuid, errors.New("invalid UUID format")
+	}
+	for i, x := range [16]int{
+		0, 2, 4, 6,
+		9, 11,
+		14, 16,
+		19, 21,
+		24, 26, 28, 30, 32, 34} {
+		v, ok := xtob(s[x], s[x+1])
+		if !ok {
+			return uuid, errors.New("invalid UUID format")
+		}
+		uuid[i] = v
+	}
+	return uuid, nil
+}
+
+// ParseBytes is like Parse, except it parses a byte slice instead of a string.
+func ParseBytes(b []byte) (UUID, error) {
+	var uuid UUID
+	switch len(b) {
+	case 36: // xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	case 36 + 9: // urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+		if !bytes.Equal(bytes.ToLower(b[:9]), []byte("urn:uuid:")) {
+			return uuid, fmt.Errorf("invalid urn prefix: %q", b[:9])
+		}
+		b = b[9:]
+	case 36 + 2: // {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
+		b = b[1:]
+	case 32: // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+		var ok bool
+		for i := 0; i < 32; i += 2 {
+			uuid[i/2], ok = xtob(b[i], b[i+1])
+			if !ok {
+				return uuid, errors.New("invalid UUID format")
+			}
+		}
+		return uuid, nil
+	default:
+		return uuid, invalidLengthError{len(b)}
+	}
+	// s is now at least 36 bytes long
+	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	if b[8] != '-' || b[13] != '-' || b[18] != '-' || b[23] != '-' {
+		return uuid, errors.New("invalid UUID format")
+	}
+	for i, x := range [16]int{
+		0, 2, 4, 6,
+		9, 11,
+		14, 16,
+		19, 21,
+		24, 26, 28, 30, 32, 34} {
+		v, ok := xtob(b[x], b[x+1])
+		if !ok {
+			return uuid, errors.New("invalid UUID format")
+		}
+		uuid[i] = v
+	}
+	return uuid, nil
+}
+
+// MustParse is like Parse but panics if the string cannot be parsed.
+// It simplifies safe initialization of global variables holding compiled UUIDs.
+func MustParse(s string) UUID {
+	uuid, err := Parse(s)
+	if err != nil {
+		panic(`uuid: Parse(` + s + `): ` + err.Error())
+	}
+	return uuid
+}
+
+// FromBytes creates a new UUID from a byte slice. Returns an error if the slice
+// does not have a length of 16. The bytes are copied from the slice.
+func FromBytes(b []byte) (uuid UUID, err error) {
+	err = uuid.UnmarshalBinary(b)
+	return uuid, err
+}
+
+// Must returns uuid if err is nil and panics otherwise.
+func Must(uuid UUID, err error) UUID {
+	if err != nil {
+		panic(err)
+	}
+	return uuid
+}
+
+// String returns the string form of uuid, xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+// , or "" if uuid is invalid.
+func (uuid UUID) String() string {
+	var buf [36]byte
+	encodeHex(buf[:], uuid)
+	return string(buf[:])
+}
+
+// URN returns the RFC 2141 URN form of uuid,
+// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx,  or "" if uuid is invalid.
+func (uuid UUID) URN() string {
+	var buf [36 + 9]byte
+	copy(buf[:], "urn:uuid:")
+	encodeHex(buf[9:], uuid)
+	return string(buf[:])
+}
+
+func encodeHex(dst []byte, uuid UUID) {
+	hex.Encode(dst, uuid[:4])
+	dst[8] = '-'
+	hex.Encode(dst[9:13], uuid[4:6])
+	dst[13] = '-'
+	hex.Encode(dst[14:18], uuid[6:8])
+	dst[18] = '-'
+	hex.Encode(dst[19:23], uuid[8:10])
+	dst[23] = '-'
+	hex.Encode(dst[24:], uuid[10:])
+}
+
+// Variant returns the variant encoded in uuid.
+func (uuid UUID) Variant() Variant {
+	switch {
+	case (uuid[8] & 0xc0) == 0x80:
+		return RFC4122
+	case (uuid[8] & 0xe0) == 0xc0:
+		return Microsoft
+	case (uuid[8] & 0xe0) == 0xe0:
+		return Future
+	default:
+		return Reserved
+	}
+}
+
+// Version returns the version of uuid.
+func (uuid UUID) Version() Version {
+	return Version(uuid[6] >> 4)
+}
+
+func (v Version) String() string {
+	if v > 15 {
+		return fmt.Sprintf("BAD_VERSION_%d", v)
+	}
+	return fmt.Sprintf("VERSION_%d", v)
+}
+
+func (v Variant) String() string {
+	switch v {
+	case RFC4122:
+		return "RFC4122"
+	case Reserved:
+		return "Reserved"
+	case Microsoft:
+		return "Microsoft"
+	case Future:
+		return "Future"
+	case Invalid:
+		return "Invalid"
+	}
+	return fmt.Sprintf("BadVariant%d", int(v))
+}
+
+// SetRand sets the random number generator to r, which implements io.Reader.
+// If r.Read returns an error when the package requests random data then
+// a panic will be issued.
+//
+// Calling SetRand with nil sets the random number generator to the default
+// generator.
+func SetRand(r io.Reader) {
+	if r == nil {
+		rander = rand.Reader
+		return
+	}
+	rander = r
+}
+
+// EnableRandPool enables internal randomness pool used for Random
+// (Version 4) UUID generation. The pool contains random bytes read from
+// the random number generator on demand in batches. Enabling the pool
+// may improve the UUID generation throughput significantly.
+//
+// Since the pool is stored on the Go heap, this feature may be a bad fit
+// for security sensitive applications.
+//
+// Both EnableRandPool and DisableRandPool are not thread-safe and should
+// only be called when there is no possibility that New or any other
+// UUID Version 4 generation function will be called concurrently.
+func EnableRandPool() {
+	poolEnabled = true
+}
+
+// DisableRandPool disables the randomness pool if it was previously
+// enabled with EnableRandPool.
+//
+// Both EnableRandPool and DisableRandPool are not thread-safe and should
+// only be called when there is no possibility that New or any other
+// UUID Version 4 generation function will be called concurrently.
+func DisableRandPool() {
+	poolEnabled = false
+	defer poolMu.Unlock()
+	poolMu.Lock()
+	poolPos = randPoolSize
+}

server/vendor/github.com/google/uuid/version1.go

@@ -0,0 +1,44 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+)
+
+// NewUUID returns a Version 1 UUID based on the current NodeID and clock
+// sequence, and the current time.  If the NodeID has not been set by SetNodeID
+// or SetNodeInterface then it will be set automatically.  If the NodeID cannot
+// be set NewUUID returns nil.  If clock sequence has not been set by
+// SetClockSequence then it will be set automatically.  If GetTime fails to
+// return the current NewUUID returns nil and an error.
+//
+// In most cases, New should be used.
+func NewUUID() (UUID, error) {
+	var uuid UUID
+	now, seq, err := GetTime()
+	if err != nil {
+		return uuid, err
+	}
+
+	timeLow := uint32(now & 0xffffffff)
+	timeMid := uint16((now >> 32) & 0xffff)
+	timeHi := uint16((now >> 48) & 0x0fff)
+	timeHi |= 0x1000 // Version 1
+
+	binary.BigEndian.PutUint32(uuid[0:], timeLow)
+	binary.BigEndian.PutUint16(uuid[4:], timeMid)
+	binary.BigEndian.PutUint16(uuid[6:], timeHi)
+	binary.BigEndian.PutUint16(uuid[8:], seq)
+
+	nodeMu.Lock()
+	if nodeID == zeroID {
+		setNodeInterface("")
+	}
+	copy(uuid[10:], nodeID[:])
+	nodeMu.Unlock()
+
+	return uuid, nil
+}

server/vendor/github.com/google/uuid/version4.go

@@ -0,0 +1,76 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import "io"
+
+// New creates a new random UUID or panics.  New is equivalent to
+// the expression
+//
+//    uuid.Must(uuid.NewRandom())
+func New() UUID {
+	return Must(NewRandom())
+}
+
+// NewString creates a new random UUID and returns it as a string or panics.
+// NewString is equivalent to the expression
+//
+//    uuid.New().String()
+func NewString() string {
+	return Must(NewRandom()).String()
+}
+
+// NewRandom returns a Random (Version 4) UUID.
+//
+// The strength of the UUIDs is based on the strength of the crypto/rand
+// package.
+//
+// Uses the randomness pool if it was enabled with EnableRandPool.
+//
+// A note about uniqueness derived from the UUID Wikipedia entry:
+//
+//  Randomly generated UUIDs have 122 random bits.  One's annual risk of being
+//  hit by a meteorite is estimated to be one chance in 17 billion, that
+//  means the probability is about 0.00000000006 (6 × 10−11),
+//  equivalent to the odds of creating a few tens of trillions of UUIDs in a
+//  year and having one duplicate.
+func NewRandom() (UUID, error) {
+	if !poolEnabled {
+		return NewRandomFromReader(rander)
+	}
+	return newRandomFromPool()
+}
+
+// NewRandomFromReader returns a UUID based on bytes read from a given io.Reader.
+func NewRandomFromReader(r io.Reader) (UUID, error) {
+	var uuid UUID
+	_, err := io.ReadFull(r, uuid[:])
+	if err != nil {
+		return Nil, err
+	}
+	uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
+	uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
+	return uuid, nil
+}
+
+func newRandomFromPool() (UUID, error) {
+	var uuid UUID
+	poolMu.Lock()
+	if poolPos == randPoolSize {
+		_, err := io.ReadFull(rander, pool[:])
+		if err != nil {
+			poolMu.Unlock()
+			return Nil, err
+		}
+		poolPos = 0
+	}
+	copy(uuid[:], pool[poolPos:(poolPos+16)])
+	poolPos += 16
+	poolMu.Unlock()
+
+	uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
+	uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
+	return uuid, nil
+}

server/vendor/github.com/icrowley/fake/.gitignore

@@ -0,0 +1,26 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+/vendor
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof
+.DS_Store

server/vendor/github.com/icrowley/fake/.go-makefile.json

@@ -0,0 +1,11 @@
+{
+    "build_id_generator": "0x$(shell echo $(version) | sha1sum | awk '{print $$1}')",
+    "host": "github.com",
+    "include": [],
+    "kind": "package",
+    "name": "fake",
+    "tool": [],
+    "user": "icrowley",
+    "version_generator": "$(shell git rev-list --count HEAD).$(shell git rev-parse --short HEAD)",
+    "version_variable": "cli.version"
+}

server/vendor/github.com/icrowley/fake/.travis.yml

@@ -0,0 +1,11 @@
+sudo: false
+language: go
+
+go:
+  - 1.6
+  - 1.7
+  - 1.8
+  - master
+  - tip
+
+script: make test

server/vendor/github.com/icrowley/fake/LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Dmitry Afanasyev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

server/vendor/github.com/icrowley/fake/Makefile

@@ -0,0 +1,48 @@
+.DEFAULT_GOAL = all
+
+numcpus  := $(shell cat /proc/cpuinfo | grep '^processor\s*:' | wc -l)
+version  := $(shell git rev-list --count HEAD).$(shell git rev-parse --short HEAD)
+
+name     := fake
+package  := github.com/icrowley/$(name)
+
+.PHONY: all
+all:: dependencies
+
+.PHONY: tools
+tools::
+	@if [ ! -e "$(GOPATH)"/bin/glide ]; then go get github.com/Masterminds/glide; fi
+	@if [ ! -e "$(GOPATH)"/bin/godef ]; then go get github.com/rogpeppe/godef; fi
+	@if [ ! -e "$(GOPATH)"/bin/gocode ]; then go get github.com/nsf/gocode; fi
+	@if [ ! -e "$(GOPATH)"/bin/gometalinter ]; then go get github.com/alecthomas/gometalinter && gometalinter --install; fi
+	@if [ ! -e "$(GOPATH)"/src/github.com/stretchr/testify/assert ]; then go get github.com/stretchr/testify/assert; fi
+
+.PHONY: dependencies
+dependencies:: tools
+	glide install
+
+.PHONY: clean
+clean:: tools
+	glide cache-clear
+
+.PHONY: test
+test:: dependencies
+	go test -v \
+           $(shell glide novendor)
+
+.PHONY: bench
+bench:: dependencies
+	go test        \
+           -bench=. -v \
+           $(shell glide novendor)
+
+.PHONY: lint
+lint:: dependencies
+	go vet $(shell glide novendor)
+	gometalinter                     \
+		--deadline=5m            \
+		--concurrency=$(numcpus) \
+		$(shell glide novendor)
+
+.PHONY: check
+check:: lint test

server/vendor/github.com/icrowley/fake/README.md

@@ -0,0 +1,90 @@
+[![Build Status](https://img.shields.io/travis/icrowley/fake.svg?style=flat)](https://travis-ci.org/icrowley/fake) [![Godoc](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](https://godoc.org/github.com/icrowley/fake) [![license](http://img.shields.io/badge/license-MIT-red.svg?style=flat)](https://raw.githubusercontent.com/icrowley/fake/master/LICENSE)
+
+Fake
+====
+
+Fake is a fake data generator for Go (Golang), heavily inspired by the forgery and ffaker Ruby gems.
+
+## About
+
+Most data and methods are ported from forgery/ffaker Ruby gems.
+For the list of available methods please look at https://godoc.org/github.com/icrowley/fake.
+Currently english and russian languages are available.
+
+Fake embeds samples data files unless you call `UseExternalData(true)` in order to be able to work without external files dependencies when compiled, so, if you add new data files or make changes to existing ones don't forget to regenerate data.go file using `github.com/mjibson/esc` tool and `esc -o data.go -pkg fake data` command (or you can just use `go generate` command if you are using Go 1.4 or later).
+
+## Install
+
+```shell
+go get github.com/icrowley/fake
+```
+
+## Import
+
+```go
+import (
+  "github.com/icrowley/fake"
+)
+```
+
+## Documentation
+
+Documentation can be found at godoc:
+
+https://godoc.org/github.com/icrowley/fake
+
+## Test
+To run the project tests:
+
+```shell
+cd test
+go test
+```
+
+## Examples
+
+```go
+name := fake.FirstName()
+fullname := fake.FullName()
+product := fake.Product()
+```
+
+Changing language:
+
+```go
+err := fake.SetLang("ru")
+if err != nil {
+  panic(err)
+}
+password := fake.SimplePassword()
+```
+
+Using english fallback:
+
+```go
+err := fake.SetLang("ru")
+if err != nil {
+  panic(err)
+}
+fake.EnFallback(true)
+password := fake.Paragraph()
+```
+
+Using external data:
+
+```go
+fake.UseExternalData(true)
+password := fake.Paragraph()
+```
+
+### Author
+
+Dmitry Afanasyev,
+http://twitter.com/i_crowley
+dimarzio1986@gmail.com
+
+
+### Maintainers
+
+Dmitry Moskowski
+https://github.com/corpix

server/vendor/github.com/icrowley/fake/addresses.go

@@ -0,0 +1,69 @@
+package fake
+
+import "strconv"
+
+// Continent generates random continent
+func Continent() string {
+	return lookup(lang, "continents", true)
+}
+
+// Country generates random country
+func Country() string {
+	return lookup(lang, "countries", true)
+}
+
+// City generates random city
+func City() string {
+	city := lookup(lang, "cities", true)
+	switch r.Intn(5) {
+	case 0:
+		return join(cityPrefix(), city)
+	case 1:
+		return join(city, citySuffix())
+	default:
+		return city
+	}
+}
+
+func cityPrefix() string {
+	return lookup(lang, "city_prefixes", false)
+}
+
+func citySuffix() string {
+	return lookup(lang, "city_suffixes", false)
+}
+
+// State generates random state
+func State() string {
+	return lookup(lang, "states", false)
+}
+
+// StateAbbrev generates random state abbreviation
+func StateAbbrev() string {
+	return lookup(lang, "state_abbrevs", false)
+}
+
+// Street generates random street name
+func Street() string {
+	street := lookup(lang, "streets", true)
+	return join(street, streetSuffix())
+}
+
+// StreetAddress generates random street name along with building number
+func StreetAddress() string {
+	return join(Street(), strconv.Itoa(r.Intn(100)))
+}
+
+func streetSuffix() string {
+	return lookup(lang, "street_suffixes", true)
+}
+
+// Zip generates random zip code using one of the formats specifies in zip_format file
+func Zip() string {
+	return generate(lang, "zips", true)
+}
+
+// Phone generates random phone number using one of the formats format specified in phone_format file
+func Phone() string {
+	return generate(lang, "phones", true)
+}

server/vendor/github.com/icrowley/fake/credit_cards.go

@@ -0,0 +1,69 @@
+package fake
+
+import (
+	"strings"
+
+	"strconv"
+)
+
+type creditCard struct {
+	vendor   string
+	length   int
+	prefixes []int
+}
+
+var creditCards = map[string]creditCard{
+	"visa":       {"VISA", 16, []int{4539, 4556, 4916, 4532, 4929, 40240071, 4485, 4716, 4}},
+	"mastercard": {"MasterCard", 16, []int{51, 52, 53, 54, 55}},
+	"amex":       {"American Express", 15, []int{34, 37}},
+	"discover":   {"Discover", 16, []int{6011}},
+}
+
+// CreditCardType returns one of the following credit values:
+// VISA, MasterCard, American Express and Discover
+func CreditCardType() string {
+	n := len(creditCards)
+	var vendors []string
+	for _, cc := range creditCards {
+		vendors = append(vendors, cc.vendor)
+	}
+
+	return vendors[r.Intn(n)]
+}
+
+// CreditCardNum generated credit card number according to the card number rules
+func CreditCardNum(vendor string) string {
+	if vendor != "" {
+		vendor = strings.ToLower(vendor)
+	} else {
+		var vendors []string
+		for v := range creditCards {
+			vendors = append(vendors, v)
+		}
+		vendor = vendors[r.Intn(len(vendors))]
+	}
+	card := creditCards[vendor]
+	prefix := strconv.Itoa(card.prefixes[r.Intn(len(card.prefixes))])
+	num := []rune(prefix)
+	for i := 0; i < card.length-len(prefix); i++ {
+		num = append(num, genCCDigit(num))
+	}
+	return string(num)
+}
+
+func genCCDigit(num []rune) rune {
+	sum := 0
+	for i := len(num) - 1; i >= 0; i-- {
+		n := int(num[i])
+		if i%2 != 0 {
+			sum += n
+		} else {
+			if n*2 > 9 {
+				sum += n*2 - 9
+			} else {
+				sum += n * 2
+			}
+		}
+	}
+	return rune(((sum/10+1)*10 - sum) % 10)
+}

server/vendor/github.com/icrowley/fake/currencies.go

@@ -0,0 +1,11 @@
+package fake
+
+// Currency generates currency name
+func Currency() string {
+	return lookup(lang, "currencies", true)
+}
+
+// CurrencyCode generates currency code
+func CurrencyCode() string {
+	return lookup(lang, "currency_codes", true)
+}

server/vendor/github.com/icrowley/fake/dates.go

@@ -0,0 +1,42 @@
+package fake
+
+// Day generates day of the month
+func Day() int {
+	return r.Intn(31) + 1
+}
+
+// WeekDay generates name ot the week day
+func WeekDay() string {
+	return lookup(lang, "weekdays", true)
+}
+
+// WeekDayShort generates abbreviated name of the week day
+func WeekDayShort() string {
+	return lookup(lang, "weekdays_short", true)
+}
+
+// WeekdayNum generates number of the day of the week
+func WeekdayNum() int {
+	return r.Intn(7) + 1
+}
+
+// Month generates month name
+func Month() string {
+	return lookup(lang, "months", true)
+}
+
+// MonthShort generates abbreviated month name
+func MonthShort() string {
+	return lookup(lang, "months_short", true)
+}
+
+// MonthNum generates month number (from 1 to 12)
+func MonthNum() int {
+	return r.Intn(12) + 1
+}
+
+// Year generates year using the given boundaries
+func Year(from, to int) int {
+	n := r.Intn(to-from) + 1
+	return from + n
+}

server/vendor/github.com/icrowley/fake/fake.go

@@ -0,0 +1,214 @@
+/*
+Package fake is the fake data generatror for go (Golang), heavily inspired by forgery and ffaker Ruby gems
+
+Most data and methods are ported from forgery/ffaker Ruby gems.
+
+Currently english and russian languages are available.
+
+For the list of available methods please look at https://godoc.org/github.com/icrowley/fake.
+
+Fake embeds samples data files unless you call UseExternalData(true) in order to be able to work without external files dependencies when compiled, so, if you add new data files or make changes to existing ones don't forget to regenerate data.go file using github.com/mjibson/esc tool and esc -o data.go -pkg fake data command (or you can just use go generate command if you are using Go 1.4 or later).
+
+Examples:
+	name := fake.FirstName()
+	fullname = := fake.FullName()
+	product := fake.Product()
+
+Changing language:
+	err := fake.SetLang("ru")
+	if err != nil {
+		panic(err)
+	}
+	password := fake.SimplePassword()
+
+Using english fallback:
+	err := fake.SetLang("ru")
+	if err != nil {
+		panic(err)
+	}
+	fake.EnFallback(true)
+	password := fake.Paragraph()
+
+Using external data:
+	fake.UseExternalData(true)
+	password := fake.Paragraph()
+*/
+package fake
+
+import (
+	"fmt"
+	"io/ioutil"
+	"math/rand"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+//go:generate go get github.com/mjibson/esc
+//go:generate esc -o data.go -pkg fake data
+
+// cat/subcat/lang/samples
+type samplesTree map[string]map[string][]string
+
+var samplesLock sync.Mutex
+var samplesCache = make(samplesTree)
+var r = rand.New(&rndSrc{src: rand.NewSource(time.Now().UnixNano())})
+var lang = "en"
+var useExternalData = false
+var enFallback = true
+var availLangs = GetLangs()
+
+var (
+	// ErrNoLanguageFn is the error that indicates that given language is not available
+	ErrNoLanguageFn = func(lang string) error { return fmt.Errorf("The language passed (%s) is not available", lang) }
+	// ErrNoSamplesFn is the error that indicates that there are no samples for the given language
+	ErrNoSamplesFn = func(lang string) error { return fmt.Errorf("No samples found for language: %s", lang) }
+)
+
+// Seed uses the provided seed value to initialize the internal PRNG to a
+// deterministic state.
+func Seed(seed int64) {
+	r.Seed(seed)
+}
+
+type rndSrc struct {
+	mtx sync.Mutex
+	src rand.Source
+}
+
+func (s *rndSrc) Int63() int64 {
+	s.mtx.Lock()
+	n := s.src.Int63()
+	s.mtx.Unlock()
+	return n
+}
+
+func (s *rndSrc) Seed(n int64) {
+	s.mtx.Lock()
+	s.src.Seed(n)
+	s.mtx.Unlock()
+}
+
+// GetLangs returns a slice of available languages
+func GetLangs() []string {
+	var langs []string
+	for k, v := range data {
+		if v.isDir && k != "/" && k != "/data" {
+			langs = append(langs, strings.Replace(k, "/data/", "", 1))
+		}
+	}
+	return langs
+}
+
+// SetLang sets the language in which the data should be generated
+// returns error if passed language is not available
+func SetLang(newLang string) error {
+	found := false
+	for _, l := range availLangs {
+		if newLang == l {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return ErrNoLanguageFn(newLang)
+	}
+	lang = newLang
+	return nil
+}
+
+// UseExternalData sets the flag that allows using of external files as data providers (fake uses embedded ones by default)
+func UseExternalData(flag bool) {
+	useExternalData = flag
+}
+
+// EnFallback sets the flag that allows fake to fallback to englsh samples if the ones for the used languaged are not available
+func EnFallback(flag bool) {
+	enFallback = flag
+}
+
+func (st samplesTree) hasKeyPath(lang, cat string) bool {
+	if _, ok := st[lang]; ok {
+		if _, ok = st[lang][cat]; ok {
+			return true
+		}
+	}
+	return false
+}
+
+func join(parts ...string) string {
+	var filtered []string
+	for _, part := range parts {
+		if part != "" {
+			filtered = append(filtered, part)
+		}
+	}
+	return strings.Join(filtered, " ")
+}
+
+func generate(lang, cat string, fallback bool) string {
+	format := lookup(lang, cat+"_format", fallback)
+	var result string
+	for _, ru := range format {
+		if ru != '#' {
+			result += string(ru)
+		} else {
+			result += strconv.Itoa(r.Intn(10))
+		}
+	}
+	return result
+}
+
+func lookup(lang, cat string, fallback bool) string {
+	samplesLock.Lock()
+	s := _lookup(lang, cat, fallback)
+	samplesLock.Unlock()
+	return s
+}
+
+func _lookup(lang, cat string, fallback bool) string {
+	var samples []string
+
+	if samplesCache.hasKeyPath(lang, cat) {
+		samples = samplesCache[lang][cat]
+	} else {
+		var err error
+		samples, err = populateSamples(lang, cat)
+		if err != nil {
+			if lang != "en" && fallback && enFallback && err.Error() == ErrNoSamplesFn(lang).Error() {
+				return _lookup("en", cat, false)
+			}
+			return ""
+		}
+	}
+
+	return samples[r.Intn(len(samples))]
+}
+
+func populateSamples(lang, cat string) ([]string, error) {
+	data, err := readFile(lang, cat)
+	if err != nil {
+		return nil, err
+	}
+
+	if _, ok := samplesCache[lang]; !ok {
+		samplesCache[lang] = make(map[string][]string)
+	}
+
+	samples := strings.Split(strings.TrimSpace(string(data)), "\n")
+
+	samplesCache[lang][cat] = samples
+	return samples, nil
+}
+
+func readFile(lang, cat string) ([]byte, error) {
+	fullpath := fmt.Sprintf("/data/%s/%s", lang, cat)
+	file, err := FS(useExternalData).Open(fullpath)
+	if err != nil {
+		return nil, ErrNoSamplesFn(lang)
+	}
+	defer file.Close()
+
+	return ioutil.ReadAll(file)
+}

server/vendor/github.com/icrowley/fake/general.go

@@ -0,0 +1,79 @@
+package fake
+
+var lowerLetters = []rune("abcdefghijklmnopqrstuvwxyz")
+var upperLetters = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZ")
+var numeric = []rune("0123456789")
+var specialChars = []rune(`!'@#$%^&*()_+-=[]{};:",./?`)
+var hexDigits = []rune("0123456789abcdef")
+
+func text(atLeast, atMost int, allowLower, allowUpper, allowNumeric, allowSpecial bool) string {
+	allowedChars := []rune{}
+	if allowLower {
+		allowedChars = append(allowedChars, lowerLetters...)
+	}
+	if allowUpper {
+		allowedChars = append(allowedChars, upperLetters...)
+	}
+	if allowNumeric {
+		allowedChars = append(allowedChars, numeric...)
+	}
+	if allowSpecial {
+		allowedChars = append(allowedChars, specialChars...)
+	}
+
+	result := []rune{}
+	nTimes := r.Intn(atMost-atLeast+1) + atLeast
+	for i := 0; i < nTimes; i++ {
+		result = append(result, allowedChars[r.Intn(len(allowedChars))])
+	}
+	return string(result)
+}
+
+// Password generates password with the length from atLeast to atMOst charachers,
+// allow* parameters specify whether corresponding symbols can be used
+func Password(atLeast, atMost int, allowUpper, allowNumeric, allowSpecial bool) string {
+	return text(atLeast, atMost, true, allowUpper, allowNumeric, allowSpecial)
+}
+
+// SimplePassword is a wrapper around Password,
+// it generates password with the length from 6 to 12 symbols, with upper characters and numeric symbols allowed
+func SimplePassword() string {
+	return Password(6, 12, true, true, false)
+}
+
+// Color generates color name
+func Color() string {
+	return lookup(lang, "colors", true)
+}
+
+// DigitsN returns n digits as a string
+func DigitsN(n int) string {
+	digits := make([]rune, n)
+	for i := 0; i < n; i++ {
+		digits[i] = numeric[r.Intn(len(numeric))]
+	}
+	return string(digits)
+}
+
+// Digits returns from 1 to 5 digits as a string
+func Digits() string {
+	return DigitsN(r.Intn(5) + 1)
+}
+
+func hexDigitsStr(n int) string {
+	var num []rune
+	for i := 0; i < n; i++ {
+		num = append(num, hexDigits[r.Intn(len(hexDigits))])
+	}
+	return string(num)
+}
+
+// HexColor generates hex color name
+func HexColor() string {
+	return hexDigitsStr(6)
+}
+
+// HexColorShort generates short hex color name
+func HexColorShort() string {
+	return hexDigitsStr(3)
+}

server/vendor/github.com/icrowley/fake/geo.go

@@ -0,0 +1,57 @@
+package fake
+
+// Latitude generates latitude (from -90.0 to 90.0)
+func Latitude() float32 {
+	return r.Float32()*180 - 90
+}
+
+// LatitudeDegrees generates latitude degrees (from -90 to 90)
+func LatitudeDegrees() int {
+	return r.Intn(180) - 90
+}
+
+// LatitudeMinutes generates latitude minutes (from 0 to 60)
+func LatitudeMinutes() int {
+	return r.Intn(60)
+}
+
+// LatitudeSeconds generates latitude seconds (from 0 to 60)
+func LatitudeSeconds() int {
+	return r.Intn(60)
+}
+
+// LatitudeDirection generates latitude direction (N(orth) o S(outh))
+func LatitudeDirection() string {
+	if r.Intn(2) == 0 {
+		return "N"
+	}
+	return "S"
+}
+
+// Longitude generates longitude (from -180 to 180)
+func Longitude() float32 {
+	return r.Float32()*360 - 180
+}
+
+// LongitudeDegrees generates longitude degrees (from -180 to 180)
+func LongitudeDegrees() int {
+	return r.Intn(360) - 180
+}
+
+// LongitudeMinutes generates (from 0 to 60)
+func LongitudeMinutes() int {
+	return r.Intn(60)
+}
+
+// LongitudeSeconds generates (from 0 to 60)
+func LongitudeSeconds() int {
+	return r.Intn(60)
+}
+
+// LongitudeDirection generates (W(est) or E(ast))
+func LongitudeDirection() string {
+	if r.Intn(2) == 0 {
+		return "W"
+	}
+	return "E"
+}

server/vendor/github.com/icrowley/fake/glide.lock

@@ -0,0 +1,6 @@
+hash: 9238b15272824ad573d8ef645fb468cb646b72598c63eae8977c3410ebfebe4a
+updated: 2017-07-23T15:10:00.972860398Z
+imports:
+- name: github.com/corpix/uarand
+  version: 031be390f409fb4bac8fb299e3bcd101479f89f8
+testImports: []

server/vendor/github.com/icrowley/fake/glide.yaml

@@ -0,0 +1,3 @@
+package: github.com/icrowley/fake
+import:
+- package: github.com/corpix/uarand

server/vendor/github.com/icrowley/fake/internet.go

@@ -0,0 +1,77 @@
+package fake
+
+import (
+	"net"
+	"strings"
+
+	"github.com/corpix/uarand"
+)
+
+// UserName generates user name in one of the following forms
+// first name + last name, letter + last names or concatenation of from 1 to 3 lowercased words
+func UserName() string {
+	gender := randGender()
+	switch r.Intn(3) {
+	case 0:
+		return lookup("en", gender+"_first_names", false) + lookup(lang, gender+"_last_names", false)
+	case 1:
+		return Character() + lookup(lang, gender+"_last_names", false)
+	default:
+		return strings.Replace(WordsN(r.Intn(3)+1), " ", "_", -1)
+	}
+}
+
+// TopLevelDomain generates random top level domain
+func TopLevelDomain() string {
+	return lookup(lang, "top_level_domains", true)
+}
+
+// DomainName generates random domain name
+func DomainName() string {
+	return Company() + "." + TopLevelDomain()
+}
+
+// EmailAddress generates email address
+func EmailAddress() string {
+	return UserName() + "@" + DomainName()
+}
+
+// EmailSubject generates random email subject
+func EmailSubject() string {
+	return Sentence()
+}
+
+// EmailBody generates random email body
+func EmailBody() string {
+	return Paragraphs()
+}
+
+// DomainZone generates random domain zone
+func DomainZone() string {
+	return lookup(lang, "domain_zones", true)
+}
+
+// IPv4 generates IPv4 address
+func IPv4() string {
+	size := 4
+	ip := make([]byte, size)
+	for i := 0; i < size; i++ {
+		ip[i] = byte(r.Intn(256))
+	}
+	return net.IP(ip).To4().String()
+}
+
+// IPv6 generates IPv6 address
+func IPv6() string {
+	size := 16
+	ip := make([]byte, size)
+	for i := 0; i < size; i++ {
+		ip[i] = byte(r.Intn(256))
+	}
+	return net.IP(ip).To16().String()
+}
+
+// UserAgent generates a random user agent.
+func UserAgent() string {
+	return uarand.GetRandom()
+}

server/vendor/github.com/icrowley/fake/jobs.go

@@ -0,0 +1,25 @@
+package fake
+
+import (
+	"strings"
+)
+
+// Company generates company name
+func Company() string {
+	return lookup(lang, "companies", true)
+}
+
+// JobTitle generates job title
+func JobTitle() string {
+	job := lookup(lang, "jobs", true)
+	return strings.Replace(job, "#{N}", jobTitleSuffix(), 1)
+}
+
+func jobTitleSuffix() string {
+	return lookup(lang, "jobs_suffixes", false)
+}
+
+// Industry generates industry name
+func Industry() string {
+	return lookup(lang, "industries", true)
+}

server/vendor/github.com/icrowley/fake/lorem_ipsum.go

@@ -0,0 +1,103 @@
+package fake
+
+import (
+	"strings"
+)
+
+// Character generates random character in the given language
+func Character() string {
+	return lookup(lang, "characters", true)
+}
+
+// CharactersN generates n random characters in the given language
+func CharactersN(n int) string {
+	var chars []string
+	for i := 0; i < n; i++ {
+		chars = append(chars, Character())
+	}
+	return strings.Join(chars, "")
+}
+
+// Characters generates from 1 to 5 characters in the given language
+func Characters() string {
+	return CharactersN(r.Intn(5) + 1)
+}
+
+// Word generates random word
+func Word() string {
+	return lookup(lang, "words", true)
+}
+
+// WordsN generates n random words
+func WordsN(n int) string {
+	words := make([]string, n)
+	for i := 0; i < n; i++ {
+		words[i] = Word()
+	}
+	return strings.Join(words, " ")
+}
+
+// Words generates from 1 to 5 random words
+func Words() string {
+	return WordsN(r.Intn(5) + 1)
+}
+
+// Title generates from 2 to 5 titleized words
+func Title() string {
+	return strings.ToTitle(WordsN(2 + r.Intn(4)))
+}
+
+// Sentence generates random sentence
+func Sentence() string {
+	var words []string
+	for i := 0; i < 3+r.Intn(12); i++ {
+		word := Word()
+		if r.Intn(5) == 0 {
+			word += ","
+		}
+		words = append(words, Word())
+	}
+
+	sentence := strings.Join(words, " ")
+
+	if r.Intn(8) == 0 {
+		sentence += "!"
+	} else {
+		sentence += "."
+	}
+
+	return sentence
+}
+
+// SentencesN generates n random sentences
+func SentencesN(n int) string {
+	sentences := make([]string, n)
+	for i := 0; i < n; i++ {
+		sentences[i] = Sentence()
+	}
+	return strings.Join(sentences, " ")
+}
+
+// Sentences generates from 1 to 5 random sentences
+func Sentences() string {
+	return SentencesN(r.Intn(5) + 1)
+}
+
+// Paragraph generates paragraph
+func Paragraph() string {
+	return SentencesN(r.Intn(10) + 1)
+}
+
+// ParagraphsN generates n paragraphs
+func ParagraphsN(n int) string {
+	var paragraphs []string
+	for i := 0; i < n; i++ {
+		paragraphs = append(paragraphs, Paragraph())
+	}
+	return strings.Join(paragraphs, "\t")
+}
+
+// Paragraphs generates from 1 to 5 paragraphs
+func Paragraphs() string {
+	return ParagraphsN(r.Intn(5) + 1)
+}

server/vendor/github.com/icrowley/fake/names.go

@@ -0,0 +1,147 @@
+package fake
+
+func randGender() string {
+	g := "male"
+	if r.Intn(2) == 0 {
+		g = "female"
+	}
+	return g
+}
+
+func firstName(gender string) string {
+	return lookup(lang, gender+"_first_names", true)
+}
+
+// MaleFirstName generates male first name
+func MaleFirstName() string {
+	return firstName("male")
+}
+
+// FemaleFirstName generates female first name
+func FemaleFirstName() string {
+	return firstName("female")
+}
+
+// FirstName generates first name
+func FirstName() string {
+	return firstName(randGender())
+}
+
+func lastName(gender string) string {
+	return lookup(lang, gender+"_last_names", true)
+}
+
+// MaleLastName generates male last name
+func MaleLastName() string {
+	return lastName("male")
+}
+
+// FemaleLastName generates female last name
+func FemaleLastName() string {
+	return lastName("female")
+}
+
+// LastName generates last name
+func LastName() string {
+	return lastName(randGender())
+}
+
+func patronymic(gender string) string {
+	return lookup(lang, gender+"_patronymics", false)
+}
+
+// MalePatronymic generates male patronymic
+func MalePatronymic() string {
+	return patronymic("male")
+}
+
+// FemalePatronymic generates female patronymic
+func FemalePatronymic() string {
+	return patronymic("female")
+}
+
+// Patronymic generates patronymic
+func Patronymic() string {
+	return patronymic(randGender())
+}
+
+func prefix(gender string) string {
+	return lookup(lang, gender+"_name_prefixes", false)
+}
+
+func suffix(gender string) string {
+	return lookup(lang, gender+"_name_suffixes", false)
+}
+
+func fullNameWithPrefix(gender string) string {
+	return join(prefix(gender), firstName(gender), lastName(gender))
+}
+
+// MaleFullNameWithPrefix generates prefixed male full name
+// if prefixes for the given language are available
+func MaleFullNameWithPrefix() string {
+	return fullNameWithPrefix("male")
+}
+
+// FemaleFullNameWithPrefix generates prefixed female full name
+// if prefixes for the given language are available
+func FemaleFullNameWithPrefix() string {
+	return fullNameWithPrefix("female")
+}
+
+// FullNameWithPrefix generates prefixed full name
+// if prefixes for the given language are available
+func FullNameWithPrefix() string {
+	return fullNameWithPrefix(randGender())
+}
+
+func fullNameWithSuffix(gender string) string {
+	return join(firstName(gender), lastName(gender), suffix(gender))
+}
+
+// MaleFullNameWithSuffix generates suffixed male full name
+// if suffixes for the given language are available
+func MaleFullNameWithSuffix() string {
+	return fullNameWithPrefix("male")
+}
+
+// FemaleFullNameWithSuffix generates suffixed female full name
+// if suffixes for the given language are available
+func FemaleFullNameWithSuffix() string {
+	return fullNameWithPrefix("female")
+}
+
+// FullNameWithSuffix generates suffixed full name
+// if suffixes for the given language are available
+func FullNameWithSuffix() string {
+	return fullNameWithPrefix(randGender())
+}
+
+func fullName(gender string) string {
+	switch r.Intn(10) {
+	case 0:
+		return fullNameWithPrefix(gender)
+	case 1:
+		return fullNameWithSuffix(gender)
+	default:
+		return join(firstName(gender), lastName(gender))
+	}
+}
+
+// MaleFullName generates male full name
+// it can occasionally include prefix or suffix
+func MaleFullName() string {
+	return fullName("male")
+}
+
+// FemaleFullName generates female full name
+// it can occasionally include prefix or suffix
+func FemaleFullName() string {
+	return fullName("female")
+}
+
+// FullName generates full name
+// it can occasionally include prefix or suffix
+func FullName() string {
+	return fullName(randGender())
+}

server/vendor/github.com/icrowley/fake/personal.go

@@ -0,0 +1,24 @@
+package fake
+
+import (
+	"strings"
+)
+
+// Gender generates random gender
+func Gender() string {
+	return lookup(lang, "genders", true)
+}
+
+// GenderAbbrev returns first downcased letter of the random gender
+func GenderAbbrev() string {
+	g := Gender()
+	if g != "" {
+		return strings.ToLower(string(g[0]))
+	}
+	return ""
+}
+
+// Language generates random human language
+func Language() string {
+	return lookup(lang, "languages", true)
+}

server/vendor/github.com/icrowley/fake/products.go

@@ -0,0 +1,26 @@
+package fake
+
+// Brand generates brand name
+func Brand() string {
+	return Company()
+}
+
+// ProductName generates product name
+func ProductName() string {
+	productName := lookup(lang, "adjectives", true) + " " + lookup(lang, "nouns", true)
+	if r.Intn(2) == 1 {
+		productName = lookup(lang, "adjectives", true) + " " + productName
+	}
+	return productName
+}
+
+// Product generates product title as brand + product name
+func Product() string {
+	return Brand() + " " + ProductName()
+}
+
+// Model generates model name that consists of letters and digits, optionally with a hyphen between them
+func Model() string {
+	seps := []string{"", " ", "-"}
+	return CharactersN(r.Intn(3)+1) + seps[r.Intn(len(seps))] + Digits()
+}

server/vendor/github.com/lann/builder/.gitignore

@@ -0,0 +1,2 @@
+*~
+\#*#

server/vendor/github.com/lann/builder/.travis.yml

@@ -0,0 +1,7 @@
+language: go
+
+go:
+  - '1.8'
+  - '1.9'
+  - '1.10'
+  - tip

server/vendor/github.com/lann/builder/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2014-2015 Lann Martin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.