143 lines
3.6 KiB
Go
143 lines
3.6 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package etcdmain
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import (
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"fmt"
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"net"
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"os"
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"time"
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"github.com/coreos/etcd/clientv3"
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pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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"github.com/coreos/etcd/pkg/transport"
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"github.com/coreos/etcd/proxy/grpcproxy"
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"github.com/spf13/cobra"
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"google.golang.org/grpc"
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)
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var (
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grpcProxyListenAddr string
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grpcProxyEndpoints []string
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grpcProxyCert string
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grpcProxyKey string
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grpcProxyCA string
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)
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func init() {
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rootCmd.AddCommand(newGRPCProxyCommand())
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}
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// newGRPCProxyCommand returns the cobra command for "grpc-proxy".
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func newGRPCProxyCommand() *cobra.Command {
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lpc := &cobra.Command{
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Use: "grpc-proxy <subcommand>",
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Short: "grpc-proxy related command",
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}
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lpc.AddCommand(newGRPCProxyStartCommand())
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return lpc
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}
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func newGRPCProxyStartCommand() *cobra.Command {
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cmd := cobra.Command{
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Use: "start",
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Short: "start the grpc proxy",
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Run: startGRPCProxy,
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}
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cmd.Flags().StringVar(&grpcProxyListenAddr, "listen-addr", "127.0.0.1:23790", "listen address")
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cmd.Flags().StringSliceVar(&grpcProxyEndpoints, "endpoints", []string{"127.0.0.1:2379"}, "comma separated etcd cluster endpoints")
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cmd.Flags().StringVar(&grpcProxyCert, "cert", "", "identify secure connections with etcd servers using this TLS certificate file")
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cmd.Flags().StringVar(&grpcProxyKey, "key", "", "identify secure connections with etcd servers using this TLS key file")
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cmd.Flags().StringVar(&grpcProxyCA, "cacert", "", "verify certificates of TLS-enabled secure etcd servers using this CA bundle")
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return &cmd
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}
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func startGRPCProxy(cmd *cobra.Command, args []string) {
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l, err := net.Listen("tcp", grpcProxyListenAddr)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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cfg, err := newClientCfg()
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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client, err := clientv3.New(*cfg)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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kvp := grpcproxy.NewKvProxy(client)
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watchp := grpcproxy.NewWatchProxy(client)
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clusterp := grpcproxy.NewClusterProxy(client)
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leasep := grpcproxy.NewLeaseProxy(client)
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mainp := grpcproxy.NewMaintenanceProxy(client)
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authp := grpcproxy.NewAuthProxy(client)
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server := grpc.NewServer()
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pb.RegisterKVServer(server, kvp)
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pb.RegisterWatchServer(server, watchp)
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pb.RegisterClusterServer(server, clusterp)
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pb.RegisterLeaseServer(server, leasep)
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pb.RegisterMaintenanceServer(server, mainp)
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pb.RegisterAuthServer(server, authp)
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server.Serve(l)
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}
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func newClientCfg() (*clientv3.Config, error) {
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// set tls if any one tls option set
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var cfgtls *transport.TLSInfo
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tlsinfo := transport.TLSInfo{}
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if grpcProxyCert != "" {
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tlsinfo.CertFile = grpcProxyCert
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cfgtls = &tlsinfo
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}
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if grpcProxyKey != "" {
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tlsinfo.KeyFile = grpcProxyKey
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cfgtls = &tlsinfo
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}
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if grpcProxyCA != "" {
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tlsinfo.CAFile = grpcProxyCA
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cfgtls = &tlsinfo
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}
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cfg := clientv3.Config{
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Endpoints: grpcProxyEndpoints,
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DialTimeout: 5 * time.Second,
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}
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if cfgtls != nil {
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clientTLS, err := cfgtls.ClientConfig()
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if err != nil {
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return nil, err
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}
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cfg.TLS = clientTLS
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}
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// TODO: support insecure tls
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return &cfg, nil
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}
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