| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 server |
| |
| import ( |
| "fmt" |
| "github.com/apache/servicecomb-service-center/pkg/gopool" |
| "github.com/apache/servicecomb-service-center/pkg/grace" |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| "github.com/apache/servicecomb-service-center/pkg/rest" |
| "github.com/apache/servicecomb-service-center/server/core" |
| "github.com/apache/servicecomb-service-center/server/core/backend" |
| rs "github.com/apache/servicecomb-service-center/server/rest" |
| "github.com/apache/servicecomb-service-center/server/rpc" |
| "github.com/apache/servicecomb-service-center/server/service" |
| "golang.org/x/net/context" |
| "net" |
| "strconv" |
| ) |
| |
| var apiServer *APIServer |
| |
| func init() { |
| InitAPI() |
| |
| apiServer = &APIServer{ |
| isClose: true, |
| err: make(chan error, 1), |
| goroutine: gopool.New(context.Background()), |
| } |
| } |
| |
| func InitAPI() { |
| core.ServiceAPI, core.InstanceAPI = service.AssembleResources() |
| } |
| |
| type APIType int64 |
| |
| func (t APIType) String() string { |
| switch t { |
| case RPC: |
| return "grpc" // support grpc |
| case REST: |
| return "rest" |
| default: |
| return "SCHEME" + strconv.Itoa(int(t)) |
| } |
| } |
| |
| type APIServer struct { |
| Listeners map[APIType]string |
| |
| restSrv *rest.Server |
| rpcSrv *rpc.Server |
| isClose bool |
| forked bool |
| err chan error |
| goroutine *gopool.Pool |
| } |
| |
| const ( |
| RPC APIType = 0 |
| REST APIType = 1 |
| ) |
| |
| func (s *APIServer) Err() <-chan error { |
| return s.err |
| } |
| |
| func (s *APIServer) graceDone() { |
| grace.Before(s.MarkForked) |
| grace.After(s.Stop) |
| if err := grace.Done(); err != nil { |
| log.Errorf(err, "server reload failed") |
| } |
| } |
| |
| func (s *APIServer) MarkForked() { |
| s.forked = true |
| } |
| |
| func (s *APIServer) AddListener(t APIType, ip, port string) { |
| if s.Listeners == nil { |
| s.Listeners = map[APIType]string{} |
| } |
| if len(ip) == 0 { |
| return |
| } |
| s.Listeners[t] = net.JoinHostPort(ip, port) |
| } |
| |
| func (s *APIServer) populateEndpoint(t APIType, ipPort string) { |
| if len(ipPort) == 0 { |
| return |
| } |
| address := fmt.Sprintf("%s://%s/", t, ipPort) |
| if core.ServerInfo.Config.SslEnabled { |
| address += "?sslEnabled=true" |
| } |
| core.Instance.Endpoints = append(core.Instance.Endpoints, address) |
| } |
| |
| func (s *APIServer) startRESTServer() (err error) { |
| addr, ok := s.Listeners[REST] |
| if !ok { |
| return |
| } |
| s.restSrv, err = rs.NewServer(addr) |
| if err != nil { |
| return |
| } |
| log.Infof("listen address: %s://%s", REST, s.restSrv.Listener.Addr().String()) |
| |
| s.populateEndpoint(REST, s.restSrv.Listener.Addr().String()) |
| |
| s.goroutine.Do(func(_ context.Context) { |
| err := s.restSrv.Serve() |
| if s.isClose { |
| return |
| } |
| log.Errorf(err, "error to start REST API server %s", addr) |
| s.err <- err |
| }) |
| return |
| } |
| |
| func (s *APIServer) startRPCServer() (err error) { |
| addr, ok := s.Listeners[RPC] |
| if !ok { |
| return |
| } |
| |
| s.rpcSrv, err = rpc.NewServer(addr) |
| if err != nil { |
| return |
| } |
| log.Infof("listen address: %s://%s", RPC, s.rpcSrv.Listener.Addr().String()) |
| |
| s.populateEndpoint(RPC, s.rpcSrv.Listener.Addr().String()) |
| |
| s.goroutine.Do(func(_ context.Context) { |
| err := s.rpcSrv.Serve() |
| if s.isClose { |
| return |
| } |
| log.Errorf(err, "error to start RPC API server %s", addr) |
| s.err <- err |
| }) |
| return |
| } |
| |
| func (s *APIServer) Start() { |
| if !s.isClose { |
| return |
| } |
| s.isClose = false |
| |
| core.Instance.Endpoints = nil |
| |
| err := s.startRESTServer() |
| if err != nil { |
| s.err <- err |
| return |
| } |
| |
| err = s.startRPCServer() |
| if err != nil { |
| s.err <- err |
| return |
| } |
| |
| s.graceDone() |
| |
| defer log.Info("api server is ready") |
| |
| if !core.ServerInfo.Config.SelfRegister { |
| log.Warnf("self register disabled") |
| return |
| } |
| |
| // 自注册 |
| err = backend.RegistryEngine().Start() |
| if err != nil { |
| s.err <- err |
| return |
| } |
| } |
| |
| func (s *APIServer) Stop() { |
| if s.isClose { |
| return |
| } |
| s.isClose = true |
| |
| if !s.forked && core.ServerInfo.Config.SelfRegister { |
| backend.RegistryEngine().Stop() |
| } |
| |
| if s.restSrv != nil { |
| s.restSrv.Shutdown() |
| } |
| |
| if s.rpcSrv != nil { |
| s.rpcSrv.GracefulStop() |
| } |
| |
| close(s.err) |
| |
| s.goroutine.Close(true) |
| |
| log.Info("api server stopped") |
| } |
| |
| func GetAPIServer() *APIServer { |
| return apiServer |
| } |