feat: add provider template

server/constants/db_types.go

@@ -17,4 +17,6 @@ const (
 	DbTypeYugabyte = "yugabyte"
 	// DbTypeMariaDB is the mariadb database type
 	DbTypeMariaDB = "mariadb"
+	// DbTypeCassandra is the cassandra database type
+	DbTypeCassandra = "cassandra"
 )

server/db/models/env.go

@@ -2,10 +2,10 @@ package models
 
 // Env model for db
 type Env struct {
-	Key       string `json:"_key,omitempty" bson:"_key"` // for arangodb
+	Key       string `json:"_key,omitempty" bson:"_key,omitempty" cql:"_key,omitempty"` // for arangodb
-	ID        string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id"`
+	ID        string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id" cql:"id"`
-	EnvData   string `gorm:"type:text" json:"env" bson:"env"`
+	EnvData   string `gorm:"type:text" json:"env" bson:"env" cql:"env"`
-	Hash      string `gorm:"type:text" json:"hash" bson:"hash"`
+	Hash      string `gorm:"type:text" json:"hash" bson:"hash" cql:"hash"`
-	UpdatedAt int64  `json:"updated_at" bson:"updated_at"`
+	UpdatedAt int64  `json:"updated_at" bson:"updated_at" cql:"updated_at"`
-	CreatedAt int64  `json:"created_at" bson:"created_at"`
+	CreatedAt int64  `json:"created_at" bson:"created_at" cql:"created_at"`
 }

server/db/models/session.go

@@ -2,12 +2,12 @@ package models
 
 // Session model for db
 type Session struct {
-	Key       string `json:"_key,omitempty" bson:"_key,omitempty"` // for arangodb
+	Key       string `json:"_key,omitempty" bson:"_key,omitempty" cql:"_key,omitempty"` // for arangodb
-	ID        string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id"`
+	ID        string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id" cql:"id"`
-	UserID    string `gorm:"type:char(36),index:" json:"user_id" bson:"user_id"`
+	UserID    string `gorm:"type:char(36),index:" json:"user_id" bson:"user_id" cql:"user_id"`
-	User      User   `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;" json:"-" bson:"-"`
+	User      User   `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;" json:"-" bson:"-" cql:"-"`
-	UserAgent string `json:"user_agent" bson:"user_agent"`
+	UserAgent string `json:"user_agent" bson:"user_agent" cql:"user_agent"`
-	IP        string `json:"ip" bson:"ip"`
+	IP        string `json:"ip" bson:"ip" cql:"ip"`
-	CreatedAt int64  `json:"created_at" bson:"created_at"`
+	CreatedAt int64  `json:"created_at" bson:"created_at" cql:"created_at"`
-	UpdatedAt int64  `json:"updated_at" bson:"updated_at"`
+	UpdatedAt int64  `json:"updated_at" bson:"updated_at" cql:"updated_at"`
 }

server/db/models/user.go

@@ -8,25 +8,25 @@ import (
 
 // User model for db
 type User struct {
-	Key string `json:"_key,omitempty" bson:"_key"` // for arangodb
+	Key string `json:"_key,omitempty" bson:"_key,omitempty" cql:"_key,omitempty"` // for arangodb
-	ID  string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id"`
+	ID  string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id" cql:"id"`
 
-	Email                 string  `gorm:"unique" json:"email" bson:"email"`
+	Email                 string  `gorm:"unique" json:"email" bson:"email" cql:"email"`
-	EmailVerifiedAt       *int64  `json:"email_verified_at" bson:"email_verified_at"`
+	EmailVerifiedAt       *int64  `json:"email_verified_at" bson:"email_verified_at" cql:"email_verified_at"`
-	Password              *string `gorm:"type:text" json:"password" bson:"password"`
+	Password              *string `gorm:"type:text" json:"password" bson:"password" cql:"password"`
-	SignupMethods         string  `json:"signup_methods" bson:"signup_methods"`
+	SignupMethods         string  `json:"signup_methods" bson:"signup_methods" cql:"signup_methods"`
-	GivenName             *string `json:"given_name" bson:"given_name"`
+	GivenName             *string `json:"given_name" bson:"given_name" cql:"given_name"`
-	FamilyName            *string `json:"family_name" bson:"family_name"`
+	FamilyName            *string `json:"family_name" bson:"family_name" cql:"family_name"`
-	MiddleName            *string `json:"middle_name" bson:"middle_name"`
+	MiddleName            *string `json:"middle_name" bson:"middle_name" cql:"middle_name"`
-	Nickname              *string `json:"nickname" bson:"nickname"`
+	Nickname              *string `json:"nickname" bson:"nickname" cql:"nickname"`
-	Gender                *string `json:"gender" bson:"gender"`
+	Gender                *string `json:"gender" bson:"gender" cql:"gender"`
-	Birthdate             *string `json:"birthdate" bson:"birthdate"`
+	Birthdate             *string `json:"birthdate" bson:"birthdate" cql:"birthdate"`
-	PhoneNumber           *string `gorm:"unique" json:"phone_number" bson:"phone_number"`
+	PhoneNumber           *string `gorm:"unique" json:"phone_number" bson:"phone_number" cql:"phone_number"`
-	PhoneNumberVerifiedAt *int64  `json:"phone_number_verified_at" bson:"phone_number_verified_at"`
+	PhoneNumberVerifiedAt *int64  `json:"phone_number_verified_at" bson:"phone_number_verified_at" cql:"phone_number_verified_at"`
-	Picture               *string `gorm:"type:text" json:"picture" bson:"picture"`
+	Picture               *string `gorm:"type:text" json:"picture" bson:"picture" cql:"picture"`
-	Roles                 string  `json:"roles" bson:"roles"`
+	Roles                 string  `json:"roles" bson:"roles" cql:"roles"`
-	UpdatedAt             int64   `json:"updated_at" bson:"updated_at"`
+	UpdatedAt             int64   `json:"updated_at" bson:"updated_at" cql:"updated_at"`
-	CreatedAt             int64   `json:"created_at" bson:"created_at"`
+	CreatedAt             int64   `json:"created_at" bson:"created_at" cql:"created_at"`
 }
 
 func (user *User) AsAPIUser() *model.User {

server/db/models/verification_requests.go

@@ -4,16 +4,16 @@ import "github.com/authorizerdev/authorizer/server/graph/model"
 
 // VerificationRequest model for db
 type VerificationRequest struct {
-	Key         string `json:"_key,omitempty" bson:"_key"` // for arangodb
+	Key         string `json:"_key,omitempty" bson:"_key,omitempty" cql:"_key,omitempty"` // for arangodb
-	ID          string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id"`
+	ID          string `gorm:"primaryKey;type:char(36)" json:"_id" bson:"_id" cql:"id"`
-	Token       string `gorm:"type:text" json:"token" bson:"token"`
+	Token       string `gorm:"type:text" json:"token" bson:"token" cql:"token"`
-	Identifier  string `gorm:"uniqueIndex:idx_email_identifier" json:"identifier" bson:"identifier"`
+	Identifier  string `gorm:"uniqueIndex:idx_email_identifier" json:"identifier" bson:"identifier" cql:"identifier"`
-	ExpiresAt   int64  `json:"expires_at" bson:"expires_at"`
+	ExpiresAt   int64  `json:"expires_at" bson:"expires_at" cql:"expires_at"`
-	CreatedAt   int64  `json:"created_at" bson:"created_at"`
+	CreatedAt   int64  `json:"created_at" bson:"created_at" cql:"created_at"`
-	UpdatedAt   int64  `json:"updated_at" bson:"updated_at"`
+	UpdatedAt   int64  `json:"updated_at" bson:"updated_at" cql:"updated_at"`
-	Email       string `gorm:"uniqueIndex:idx_email_identifier" json:"email" bson:"email"`
+	Email       string `gorm:"uniqueIndex:idx_email_identifier" json:"email" bson:"email" cql:"email"`
-	Nonce       string `gorm:"type:text" json:"nonce" bson:"nonce"`
+	Nonce       string `gorm:"type:text" json:"nonce" bson:"nonce" cql:"nonce"`
-	RedirectURI string `gorm:"type:text" json:"redirect_uri" bson:"redirect_uri"`
+	RedirectURI string `gorm:"type:text" json:"redirect_uri" bson:"redirect_uri" cql:"redirect_uri"`
 }
 
 func (v *VerificationRequest) AsAPIVerificationRequest() *model.VerificationRequest {

server/db/providers/cassandra/env.go

@@ -0,0 +1,32 @@
+package cassandra
+
+import (
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/google/uuid"
+)
+
+// AddEnv to save environment information in database
+func (p *provider) AddEnv(env models.Env) (models.Env, error) {
+	if env.ID == "" {
+		env.ID = uuid.New().String()
+	}
+
+	env.CreatedAt = time.Now().Unix()
+	env.UpdatedAt = time.Now().Unix()
+	return env, nil
+}
+
+// UpdateEnv to update environment information in database
+func (p *provider) UpdateEnv(env models.Env) (models.Env, error) {
+	env.UpdatedAt = time.Now().Unix()
+	return env, nil
+}
+
+// GetEnv to get environment information from database
+func (p *provider) GetEnv() (models.Env, error) {
+	var env models.Env
+
+	return env, nil
+}

server/db/providers/cassandra/provider.go

@@ -0,0 +1,52 @@
+package cassandra
+
+import (
+	"fmt"
+	"log"
+	"strings"
+
+	"github.com/authorizerdev/authorizer/server/constants"
+	"github.com/authorizerdev/authorizer/server/envstore"
+	cansandraDriver "github.com/gocql/gocql"
+)
+
+type provider struct {
+	db *cansandraDriver.Session
+}
+
+func (s provider) createTableIfNotExists(tableName string, fields []string) error {
+	keySpace := envstore.EnvStoreObj.GetStringStoreEnvVariable(constants.EnvKeyDatabaseName)
+	return s.db.Query(fmt.Sprintf(`CREATE TABLE IF NOT EXISTS %s (%s)`, keySpace+"."+tableName, strings.Join(fields, ", "))).Exec()
+}
+
+// NewProvider to initialize arangodb connection
+func NewProvider() (*provider, error) {
+	dbURL := envstore.EnvStoreObj.GetStringStoreEnvVariable(constants.EnvKeyDatabaseURL)
+	keySpace := envstore.EnvStoreObj.GetStringStoreEnvVariable(constants.EnvKeyDatabaseName)
+	cassandraClient := cansandraDriver.NewCluster(dbURL)
+	cassandraClient.Keyspace = keySpace
+	cassandraClient.RetryPolicy = &cansandraDriver.SimpleRetryPolicy{
+		NumRetries: 3,
+	}
+	cassandraClient.Consistency = cansandraDriver.Quorum
+
+	session, err := cassandraClient.CreateSession()
+	if err != nil {
+		log.Println("Error while creating connection to cassandra db", err)
+		return nil, err
+	}
+
+	q := fmt.Sprintf("CREATE KEYSPACE IF NOT EXISTS %s WITH REPLICATION = {'class': 'SimpleStrategy', 'replication_factor':1}",
+		keySpace)
+	err = session.Query(q).Exec()
+	if err != nil {
+		log.Println("Unable to create keyspace:", err)
+		return nil, err
+	}
+
+	// make sure collections are present
+
+	return &provider{
+		db: session,
+	}, err
+}

server/db/providers/cassandra/session.go

@@ -0,0 +1,24 @@
+package cassandra
+
+import (
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/google/uuid"
+)
+
+// AddSession to save session information in database
+func (p *provider) AddSession(session models.Session) error {
+	if session.ID == "" {
+		session.ID = uuid.New().String()
+	}
+
+	session.CreatedAt = time.Now().Unix()
+	session.UpdatedAt = time.Now().Unix()
+	return nil
+}
+
+// DeleteSession to delete session information from database
+func (p *provider) DeleteSession(userId string) error {
+	return nil
+}

server/db/providers/cassandra/user.go

@@ -0,0 +1,58 @@
+package cassandra
+
+import (
+	"strings"
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/constants"
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/authorizerdev/authorizer/server/envstore"
+	"github.com/authorizerdev/authorizer/server/graph/model"
+	"github.com/google/uuid"
+)
+
+// AddUser to save user information in database
+func (p *provider) AddUser(user models.User) (models.User, error) {
+	if user.ID == "" {
+		user.ID = uuid.New().String()
+	}
+
+	if user.Roles == "" {
+		user.Roles = strings.Join(envstore.EnvStoreObj.GetSliceStoreEnvVariable(constants.EnvKeyDefaultRoles), ",")
+	}
+
+	user.CreatedAt = time.Now().Unix()
+	user.UpdatedAt = time.Now().Unix()
+
+	return user, nil
+}
+
+// UpdateUser to update user information in database
+func (p *provider) UpdateUser(user models.User) (models.User, error) {
+	user.UpdatedAt = time.Now().Unix()
+	return user, nil
+}
+
+// DeleteUser to delete user information from database
+func (p *provider) DeleteUser(user models.User) error {
+	return nil
+}
+
+// ListUsers to get list of users from database
+func (p *provider) ListUsers(pagination model.Pagination) (*model.Users, error) {
+	return nil, nil
+}
+
+// GetUserByEmail to get user information from database using email address
+func (p *provider) GetUserByEmail(email string) (models.User, error) {
+	var user models.User
+
+	return user, nil
+}
+
+// GetUserByID to get user information from database using user ID
+func (p *provider) GetUserByID(id string) (models.User, error) {
+	var user models.User
+
+	return user, nil
+}

server/db/providers/cassandra/verification_requests.go

@@ -0,0 +1,45 @@
+package cassandra
+
+import (
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/authorizerdev/authorizer/server/graph/model"
+	"github.com/google/uuid"
+)
+
+// AddVerification to save verification request in database
+func (p *provider) AddVerificationRequest(verificationRequest models.VerificationRequest) (models.VerificationRequest, error) {
+	if verificationRequest.ID == "" {
+		verificationRequest.ID = uuid.New().String()
+	}
+
+	verificationRequest.CreatedAt = time.Now().Unix()
+	verificationRequest.UpdatedAt = time.Now().Unix()
+
+	return verificationRequest, nil
+}
+
+// GetVerificationRequestByToken to get verification request from database using token
+func (p *provider) GetVerificationRequestByToken(token string) (models.VerificationRequest, error) {
+	var verificationRequest models.VerificationRequest
+
+	return verificationRequest, nil
+}
+
+// GetVerificationRequestByEmail to get verification request by email from database
+func (p *provider) GetVerificationRequestByEmail(email string, identifier string) (models.VerificationRequest, error) {
+	var verificationRequest models.VerificationRequest
+
+	return verificationRequest, nil
+}
+
+// ListVerificationRequests to get list of verification requests from database
+func (p *provider) ListVerificationRequests(pagination model.Pagination) (*model.VerificationRequests, error) {
+	return nil, nil
+}
+
+// DeleteVerificationRequest to delete verification request from database
+func (p *provider) DeleteVerificationRequest(verificationRequest models.VerificationRequest) error {
+	return nil
+}

server/db/providers/provider_template/env.go

@@ -0,0 +1,32 @@
+package provider_template
+
+import (
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/google/uuid"
+)
+
+// AddEnv to save environment information in database
+func (p *provider) AddEnv(env models.Env) (models.Env, error) {
+	if env.ID == "" {
+		env.ID = uuid.New().String()
+	}
+
+	env.CreatedAt = time.Now().Unix()
+	env.UpdatedAt = time.Now().Unix()
+	return env, nil
+}
+
+// UpdateEnv to update environment information in database
+func (p *provider) UpdateEnv(env models.Env) (models.Env, error) {
+	env.UpdatedAt = time.Now().Unix()
+	return env, nil
+}
+
+// GetEnv to get environment information from database
+func (p *provider) GetEnv() (models.Env, error) {
+	var env models.Env
+
+	return env, nil
+}

server/db/providers/provider_template/provider.go

@@ -0,0 +1,20 @@
+package provider_template
+
+import (
+	"gorm.io/gorm"
+)
+
+// TODO change following provider to new db provider
+type provider struct {
+	db *gorm.DB
+}
+
+// NewProvider returns a new SQL provider
+// TODO change following provider to new db provider
+func NewProvider() (*provider, error) {
+	var sqlDB *gorm.DB
+
+	return &provider{
+		db: sqlDB,
+	}, nil
+}

server/db/providers/provider_template/session.go

@@ -0,0 +1,24 @@
+package provider_template
+
+import (
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/google/uuid"
+)
+
+// AddSession to save session information in database
+func (p *provider) AddSession(session models.Session) error {
+	if session.ID == "" {
+		session.ID = uuid.New().String()
+	}
+
+	session.CreatedAt = time.Now().Unix()
+	session.UpdatedAt = time.Now().Unix()
+	return nil
+}
+
+// DeleteSession to delete session information from database
+func (p *provider) DeleteSession(userId string) error {
+	return nil
+}

server/db/providers/provider_template/user.go

@@ -0,0 +1,58 @@
+package provider_template
+
+import (
+	"strings"
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/constants"
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/authorizerdev/authorizer/server/envstore"
+	"github.com/authorizerdev/authorizer/server/graph/model"
+	"github.com/google/uuid"
+)
+
+// AddUser to save user information in database
+func (p *provider) AddUser(user models.User) (models.User, error) {
+	if user.ID == "" {
+		user.ID = uuid.New().String()
+	}
+
+	if user.Roles == "" {
+		user.Roles = strings.Join(envstore.EnvStoreObj.GetSliceStoreEnvVariable(constants.EnvKeyDefaultRoles), ",")
+	}
+
+	user.CreatedAt = time.Now().Unix()
+	user.UpdatedAt = time.Now().Unix()
+
+	return user, nil
+}
+
+// UpdateUser to update user information in database
+func (p *provider) UpdateUser(user models.User) (models.User, error) {
+	user.UpdatedAt = time.Now().Unix()
+	return user, nil
+}
+
+// DeleteUser to delete user information from database
+func (p *provider) DeleteUser(user models.User) error {
+	return nil
+}
+
+// ListUsers to get list of users from database
+func (p *provider) ListUsers(pagination model.Pagination) (*model.Users, error) {
+	return nil, nil
+}
+
+// GetUserByEmail to get user information from database using email address
+func (p *provider) GetUserByEmail(email string) (models.User, error) {
+	var user models.User
+
+	return user, nil
+}
+
+// GetUserByID to get user information from database using user ID
+func (p *provider) GetUserByID(id string) (models.User, error) {
+	var user models.User
+
+	return user, nil
+}

server/db/providers/provider_template/verification_requests.go

@@ -0,0 +1,45 @@
+package provider_template
+
+import (
+	"time"
+
+	"github.com/authorizerdev/authorizer/server/db/models"
+	"github.com/authorizerdev/authorizer/server/graph/model"
+	"github.com/google/uuid"
+)
+
+// AddVerification to save verification request in database
+func (p *provider) AddVerificationRequest(verificationRequest models.VerificationRequest) (models.VerificationRequest, error) {
+	if verificationRequest.ID == "" {
+		verificationRequest.ID = uuid.New().String()
+	}
+
+	verificationRequest.CreatedAt = time.Now().Unix()
+	verificationRequest.UpdatedAt = time.Now().Unix()
+
+	return verificationRequest, nil
+}
+
+// GetVerificationRequestByToken to get verification request from database using token
+func (p *provider) GetVerificationRequestByToken(token string) (models.VerificationRequest, error) {
+	var verificationRequest models.VerificationRequest
+
+	return verificationRequest, nil
+}
+
+// GetVerificationRequestByEmail to get verification request by email from database
+func (p *provider) GetVerificationRequestByEmail(email string, identifier string) (models.VerificationRequest, error) {
+	var verificationRequest models.VerificationRequest
+
+	return verificationRequest, nil
+}
+
+// ListVerificationRequests to get list of verification requests from database
+func (p *provider) ListVerificationRequests(pagination model.Pagination) (*model.VerificationRequests, error) {
+	return nil, nil
+}
+
+// DeleteVerificationRequest to delete verification request from database
+func (p *provider) DeleteVerificationRequest(verificationRequest models.VerificationRequest) error {
+	return nil
+}

server/go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/gin-gonic/gin v1.7.2
 	github.com/go-playground/validator/v10 v10.8.0 // indirect
 	github.com/go-redis/redis/v8 v8.11.0
+	github.com/gocql/gocql v1.0.0 // indirect
 	github.com/golang-jwt/jwt v3.2.2+incompatible
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/uuid v1.3.0

server/go.sum

@@ -48,6 +48,8 @@ github.com/arangodb/go-velocypack v0.0.0-20200318135517-5af53c29c67e h1:Xg+hGrY2
 github.com/arangodb/go-velocypack v0.0.0-20200318135517-5af53c29c67e/go.mod h1:mq7Shfa/CaixoDxiyAAc5jZ6CVBAyPaNQCGS7mkj4Ho=
 github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0 h1:jfIu9sQUG6Ig+0+Ap1h4unLjW6YQJpKZVmUzxsD4E/Q=
 github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0/go.mod h1:t2tdKJDJF9BV14lnkjHmOQgcvEKgtqs5a1N3LNdJhGE=
+github.com/bitly/go-hostpool v0.0.0-20171023180738-a3a6125de932/go.mod h1:NOuUCSz6Q9T7+igc/hlvDOUdtWKryOrtFyIVABv/p7k=
+github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
@@ -106,6 +108,8 @@ github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfC
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
+github.com/gocql/gocql v1.0.0 h1:UnbTERpP72VZ/viKE1Q1gPtmLvyTZTvuAstvSRydw/c=
+github.com/gocql/gocql v1.0.0/go.mod h1:3gM2c4D3AnkISwBxGnMMsS8Oy4y2lhbPRsH4xnJrHG8=
 github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw=
 github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
@@ -142,6 +146,8 @@ github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw
 github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/golang/snappy v0.0.3 h1:fHPg5GQYlCeLIPB9BZqMVR5nR9A+IM5zcgeTdjMYmLA=
+github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
@@ -175,6 +181,8 @@ github.com/gorilla/context v0.0.0-20160226214623-1ea25387ff6f/go.mod h1:kBGZzfjB
 github.com/gorilla/mux v1.6.1/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed h1:5upAirOpQc1Q53c0bnx2ufif5kANL7bfZWcc6VJWJd8=
+github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed/go.mod h1:tMWxXQ9wFIaZeTI9F+hmhFiGpFmhOHzyShyFUhRm0H4=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1 h1:0hERBMJE1eitiLkihrMvRVBYAkpHzc/J3QdDN+dAcgU=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
@@ -677,6 +685,8 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
+gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
+gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/mail.v2 v2.3.1 h1:WYFn/oANrAGP2C0dcV6/pbkPzv8yGzqTjPmTeO7qoXk=
 gopkg.in/mail.v2 v2.3.1/go.mod h1:htwXN1Qh09vZJ1NVKxQqHPBaCBbzKhp5GzuJEA4VJWw=
 gopkg.in/readline.v1 v1.0.0-20160726135117-62c6fe619375/go.mod h1:lNEQeAhU009zbRxng+XOj5ITVgY24WcbNnQopyfKoYQ=