move RegisterLinks to daemon

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)

daemon/daemon.go

@@ -667,6 +667,35 @@ func (daemon *Daemon) RegisterLink(parent, child *Container, alias string) error
 	return nil
 }
 
+func (daemon *Daemon) RegisterLinks(container *Container, hostConfig *runconfig.HostConfig) error {
+	if hostConfig != nil && hostConfig.Links != nil {
+		for _, l := range hostConfig.Links {
+			parts, err := utils.PartParser("name:alias", l)
+			if err != nil {
+				return err
+			}
+			child, err := daemon.GetByName(parts["name"])
+			if err != nil {
+				return err
+			}
+			if child == nil {
+				return fmt.Errorf("Could not get container for %s", parts["name"])
+			}
+			if err := daemon.RegisterLink(container, child, parts["alias"]); err != nil {
+				return err
+			}
+		}
+
+		// After we load all the links into the daemon
+		// set them to nil on the hostconfig
+		hostConfig.Links = nil
+		if err := container.WriteHostConfig(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 // FIXME: harmonize with NewGraph()
 func NewDaemon(config *daemonconfig.Config, eng *engine.Engine) (*Daemon, error) {
 	daemon, err := NewDaemonFromDirectory(config, eng)

server/server.go

@@ -2029,37 +2029,6 @@ func (srv *Server) ImageGetCached(imgID string, config *runconfig.Config) (*imag
 	return match, nil
 }
 
-func (srv *Server) RegisterLinks(container *daemon.Container, hostConfig *runconfig.HostConfig) error {
-	daemon := srv.daemon
-
-	if hostConfig != nil && hostConfig.Links != nil {
-		for _, l := range hostConfig.Links {
-			parts, err := utils.PartParser("name:alias", l)
-			if err != nil {
-				return err
-			}
-			child, err := srv.daemon.GetByName(parts["name"])
-			if err != nil {
-				return err
-			}
-			if child == nil {
-				return fmt.Errorf("Could not get container for %s", parts["name"])
-			}
-			if err := daemon.RegisterLink(container, child, parts["alias"]); err != nil {
-				return err
-			}
-		}
-
-		// After we load all the links into the daemon
-		// set them to nil on the hostconfig
-		hostConfig.Links = nil
-		if err := container.WriteHostConfig(); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
 func (srv *Server) ContainerStart(job *engine.Job) engine.Status {
 	if len(job.Args) < 1 {
 		return job.Errorf("Usage: %s container_id", job.Name)
@@ -2100,7 +2069,7 @@ func (srv *Server) ContainerStart(job *engine.Job) engine.Status {
 			}
 		}
 		// Register any links from the host config before starting the container
-		if err := srv.RegisterLinks(container, hostConfig); err != nil {
+		if err := srv.daemon.RegisterLinks(container, hostConfig); err != nil {
 			return job.Error(err)
 		}
 		container.SetHostConfig(hostConfig)