From 07af73f367e0e07b62179100e74ceb253c8c726e Mon Sep 17 00:00:00 2001
From: Eric Chiang <eric.chiang.m@gmail.com>
Date: Tue, 9 Feb 2016 16:31:32 -0800
Subject: [PATCH] *: don't allow sqlite3 if --no-db flag not specified

---
 cmd/dex-overlord/main.go | 4 ++++
 server/config.go         | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/cmd/dex-overlord/main.go b/cmd/dex-overlord/main.go
index d18271ce..1d3eb5de 100644
--- a/cmd/dex-overlord/main.go
+++ b/cmd/dex-overlord/main.go
@@ -12,6 +12,7 @@ import (
 	"time"
 
 	"github.com/coreos/go-oidc/key"
+	"github.com/go-gorp/gorp"
 
 	"github.com/coreos/dex/admin"
 	"github.com/coreos/dex/db"
@@ -94,6 +95,9 @@ func main() {
 	if err != nil {
 		log.Fatalf(err.Error())
 	}
+	if _, ok := dbc.Dialect.(gorp.PostgresDialect); !ok {
+		log.Fatal("only postgres backend supported for multi server configurations")
+	}
 
 	if *dbMigrate {
 		var sleep time.Duration
diff --git a/server/config.go b/server/config.go
index fac9ef35..b051ac3f 100644
--- a/server/config.go
+++ b/server/config.go
@@ -14,6 +14,7 @@ import (
 	"github.com/coreos/go-oidc/key"
 	"github.com/coreos/go-oidc/oidc"
 	"github.com/coreos/pkg/health"
+	"github.com/go-gorp/gorp"
 
 	"github.com/coreos/dex/connector"
 	"github.com/coreos/dex/db"
@@ -222,6 +223,9 @@ func (cfg *MultiServerConfig) Configure(srv *Server) error {
 	if err != nil {
 		return fmt.Errorf("unable to initialize database connection: %v", err)
 	}
+	if _, ok := dbc.Dialect.(gorp.PostgresDialect); !ok {
+		return errors.New("only postgres backend supported for multi server configurations")
+	}
 
 	kRepo, err := db.NewPrivateKeySetRepo(dbc, cfg.UseOldFormat, cfg.KeySecrets...)
 	if err != nil {