Add Namespace flag (#21)

* added http-namespace to the flagset

* update description

* added namespace option to the options list

* added namespace as a config parameter

* updated docs

* fix default value override

docs/content/getting-started.md

@@ -129,6 +129,9 @@ If you prefer to configure the service with commandline flags you can see the av
 --http-addr
 : Address to bind http server, defaults to `0.0.0.0:9120`
 
+--http-namespace
+: Namespace for internal services communication, defaults to `com.owncloud.web`
+
 --http-root
 : Root path of http server, defaults to `/`
 

pkg/config/config.go

@@ -17,8 +17,9 @@ type Debug struct {
 
 // HTTP defines the available http configuration.
 type HTTP struct {
-	Addr string
-	Root string
+	Addr      string
+	Namespace string
+	Root      string
 }
 
 // Tracing defines the available tracing configuration.

pkg/flagset/flagset.go

@@ -127,6 +127,13 @@ func ServerWithConfig(cfg *config.Config) []cli.Flag {
 			EnvVar:      "GRAPH_HTTP_ROOT",
 			Destination: &cfg.HTTP.Root,
 		},
+		&cli.StringFlag{
+			Name:        "http-namespace",
+			Value:       "com.owncloud.web",
+			Usage:       "Set the base namespace for the http service for service discovery",
+			EnvVar:      "GRAPH_HTTP_NAMESPACE",
+			Destination: &cfg.HTTP.Namespace,
+		},
 		&cli.StringFlag{
 			Name:        "ldap-network",
 			Value:       "tcp",

pkg/server/http/option.go

@@ -14,11 +14,12 @@ type Option func(o *Options)
 
 // Options defines the available options for this package.
 type Options struct {
-	Logger  log.Logger
-	Context context.Context
-	Config  *config.Config
-	Metrics *metrics.Metrics
-	Flags   []cli.Flag
+	Logger    log.Logger
+	Context   context.Context
+	Config    *config.Config
+	Metrics   *metrics.Metrics
+	Flags     []cli.Flag
+	Namespace string
 }
 
 // newOptions initializes the available default options.
@@ -66,3 +67,10 @@ func Flags(val []cli.Flag) Option {
 		o.Flags = append(o.Flags, val...)
 	}
 }
+
+// Namespace provides a function to set the Namespace option.
+func Namespace(val string) Option {
+	return func(o *Options) {
+		o.Namespace = val
+	}
+}

pkg/server/http/server.go

@@ -14,7 +14,7 @@ func Server(opts ...Option) (http.Service, error) {
 
 	service := http.NewService(
 		http.Logger(options.Logger),
-		http.Namespace("go.micro.web"),
+		http.Namespace(options.Config.HTTP.Namespace),
 		http.Name("graph"),
 		http.Version(version.String),
 		http.Address(options.Config.HTTP.Addr),