kubernetes/cmd/proxy/proxy.go
Clayton Coleman 9006eadcfe kube-proxy can read config from the apiserver
All clients that talk to a "master" as a host:port or URL
(scheme://host:port) parameter.  Add tests.
2014-08-27 15:49:01 -04:00

93 lines
2.8 KiB
Go

/*
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.
*/
package main
import (
"flag"
"time"
"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
"github.com/GoogleCloudPlatform/kubernetes/pkg/proxy"
"github.com/GoogleCloudPlatform/kubernetes/pkg/proxy/config"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
verflag "github.com/GoogleCloudPlatform/kubernetes/pkg/version/flag"
"github.com/coreos/go-etcd/etcd"
"github.com/golang/glog"
)
var (
configFile = flag.String("configfile", "/tmp/proxy_config", "Configuration file for the proxy")
master = flag.String("master", "", "The address of the Kubernetes API server (optional)")
etcdServerList util.StringList
)
func init() {
flag.Var(&etcdServerList, "etcd_servers", "List of etcd servers to watch (http://ip:port), comma separated (optional)")
}
func main() {
flag.Parse()
util.InitLogs()
defer util.FlushLogs()
verflag.PrintAndExitIfRequested()
serviceConfig := config.NewServiceConfig()
endpointsConfig := config.NewEndpointsConfig()
// define api config source
if *master != "" {
glog.Infof("Using api calls to get config %v", *master)
//TODO: add auth info
client := client.New(*master, nil)
config.NewSourceAPI(
client,
30*time.Second,
serviceConfig.Channel("api"),
endpointsConfig.Channel("api"),
)
}
// Create a configuration source that handles configuration from etcd.
if len(etcdServerList) > 0 && *master == "" {
glog.Infof("Using etcd servers %v", etcdServerList)
// Set up logger for etcd client
etcd.SetLogger(util.NewLogger("etcd "))
etcdClient := etcd.NewClient(etcdServerList)
config.NewConfigSourceEtcd(etcdClient,
serviceConfig.Channel("etcd"),
endpointsConfig.Channel("etcd"))
}
// And create a configuration source that reads from a local file
config.NewConfigSourceFile(*configFile,
serviceConfig.Channel("file"),
endpointsConfig.Channel("file"))
glog.Infof("Using configuration file %s", *configFile)
loadBalancer := proxy.NewLoadBalancerRR()
proxier := proxy.NewProxier(loadBalancer)
// Wire proxier to handle changes to services
serviceConfig.RegisterHandler(proxier)
// And wire loadBalancer to handle changes to endpoints to services
endpointsConfig.RegisterHandler(loadBalancer)
// Just loop forever for now...
select {}
}