github.com/deemoprobe/k8s-first-commit@v0.0.0-20230430165612-a541f1982be3/cmd/proxy/proxy.go (about)

     1  /*
     2  Copyright 2014 Google Inc. All rights reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  package main
    17  
    18  import (
    19  	"flag"
    20  	"log"
    21  	"os"
    22  
    23  	"github.com/GoogleCloudPlatform/kubernetes/pkg/proxy"
    24  	"github.com/GoogleCloudPlatform/kubernetes/pkg/proxy/config"
    25  	"github.com/coreos/go-etcd/etcd"
    26  )
    27  
    28  var (
    29  	config_file  = flag.String("configfile", "/tmp/proxy_config", "Configuration file for the proxy")
    30  	etcd_servers = flag.String("etcd_servers", "http://10.240.10.57:4001", "Servers for the etcd cluster (http://ip:port).")
    31  )
    32  
    33  func main() {
    34  	flag.Parse()
    35  
    36  	// Set up logger for etcd client
    37  	etcd.SetLogger(log.New(os.Stderr, "etcd ", log.LstdFlags))
    38  
    39  	log.Printf("Using configuration file %s and etcd_servers %s", *config_file, *etcd_servers)
    40  
    41  	proxyConfig := config.NewServiceConfig()
    42  
    43  	// Create a configuration source that handles configuration from etcd.
    44  	etcdClient := etcd.NewClient([]string{*etcd_servers})
    45  	config.NewConfigSourceEtcd(etcdClient,
    46  		proxyConfig.GetServiceConfigurationChannel("etcd"),
    47  		proxyConfig.GetEndpointsConfigurationChannel("etcd"))
    48  
    49  	// And create a configuration source that reads from a local file
    50  	config.NewConfigSourceFile(*config_file,
    51  		proxyConfig.GetServiceConfigurationChannel("file"),
    52  		proxyConfig.GetEndpointsConfigurationChannel("file"))
    53  
    54  	loadBalancer := proxy.NewLoadBalancerRR()
    55  	proxier := proxy.NewProxier(loadBalancer)
    56  	// Wire proxier to handle changes to services
    57  	proxyConfig.RegisterServiceHandler(proxier)
    58  	// And wire loadBalancer to handle changes to endpoints to services
    59  	proxyConfig.RegisterEndpointsHandler(loadBalancer)
    60  
    61  	// Just loop forever for now...
    62  	select {}
    63  
    64  }