*: bubble the dbhandler up to cli

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

config/config.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"io/ioutil"
+
 	"launchpad.net/goyaml"
 )
 
@@ -9,6 +10,7 @@ type Config struct {
 	Server        bool   // Run as server, if different than false (server)
 	Ip            string // Bind address, if different than 0.0.0.0 (server)
 	Port          string // listen port, if different than '7777' (server)
+	DbHandler     string // "mongo" (server)
 	MongoHost     string // mongoDB host, if different than 'localhost' (server)
 	MongoDbName   string // mongoDB db name, if different than 'filesrv' (server)
 	MongoUsername string // mongoDB username, if any (server)
@@ -52,6 +54,9 @@ func (c *Config) Merge(other *Config) error {
 	if len(other.Port) > 0 {
 		c.Port = other.Port
 	}
+	if len(other.DbHandler) > 0 {
+		c.DbHandler = other.DbHandler
+	}
 	if len(other.MongoHost) > 0 {
 		c.MongoHost = other.MongoHost
 	}

imgsrv.go

@@ -26,6 +26,7 @@ var (
 		Server:        false,
 		Ip:            "0.0.0.0",
 		Port:          "7777",
+		DbHandler:     "mongo",
 		MongoHost:     "localhost",
 		MongoDbName:   "filesrv",
 		MongoUsername: "",
@@ -124,6 +125,11 @@ func init() {
 		DefaultConfig.Port,
 		"Port to listen on (if running as a server)('port' in the config)")
 
+	flag.StringVar(&DefaultConfig.DbHandler,
+		"dbhandler",
+		DefaultConfig.DbHandler,
+		"Database backend handler (if runnint as a server)")
+
 	/* MongoDB settings */
 	flag.StringVar(&DefaultConfig.MongoHost,
 		"mongo-host",

server.go

@@ -33,8 +33,14 @@ var (
 func runServer(c *config.Config) {
 	serverConfig = *c
 
-	du = dbutil.Handles["mongo"]
+	var duConfig interface{}
-	duConfig := struct {
+	var ok bool
+	if du, ok = dbutil.Handles[serverConfig.DbHandler]; !ok {
+		log.Fatalf("DbHandler %q not found", serverConfig.DbHandler)
+	}
+
+	if serverConfig.DbHandler == "mongo" {
+		duConfig = struct {
 			Seed   string
 			User   string
 			Pass   string
@@ -45,6 +51,7 @@ func runServer(c *config.Config) {
 			serverConfig.MongoPassword,
 			serverConfig.MongoDbName,
 		}
+	}
 
 	if err := du.Init(json.Marshal(duConfig)); err != nil {
 		log.Fatal(err)