First commit

cmd/controller-manager/controller-manager.go

@@ -0,0 +1,58 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+// The controller manager is responsible for monitoring replication controllers, and creating corresponding
+// tasks to achieve the desired state.  It listens for new controllers in etcd, and it sends requests to the
+// master to create/delete tasks.
+//
+// TODO: Refactor the etcd watch code so that it is a pluggable interface.
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+	"time"
+
+	kube_client "github.com/GoogleCloudPlatform/kubernetes/pkg/client"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/registry"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
+	"github.com/coreos/go-etcd/etcd"
+)
+
+var (
+	etcd_servers = flag.String("etcd_servers", "", "Servers for the etcd (http://ip:port).")
+	master       = flag.String("master", "", "The address of the Kubernetes API server")
+)
+
+func main() {
+	flag.Parse()
+
+	if len(*etcd_servers) == 0 || len(*master) == 0 {
+		log.Fatal("usage: controller-manager -etcd_servers <servers> -master <master>")
+	}
+
+	// Set up logger for etcd client
+	etcd.SetLogger(log.New(os.Stderr, "etcd ", log.LstdFlags))
+
+	controllerManager := registry.MakeReplicationManager(etcd.NewClient([]string{*etcd_servers}),
+		kube_client.Client{
+			Host: "http://" + *master,
+		})
+
+	go util.Forever(func() { controllerManager.Synchronize() }, 20*time.Second)
+	go util.Forever(func() { controllerManager.WatchControllers() }, 20*time.Second)
+	select {}
+}