| /* |
| * 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 service |
| |
| import ( |
| "context" |
| "errors" |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| "github.com/apache/servicecomb-service-center/pkg/util" |
| pb "github.com/apache/servicecomb-service-center/server/core/proto" |
| "github.com/apache/servicecomb-service-center/server/notify" |
| serviceUtil "github.com/apache/servicecomb-service-center/server/service/util" |
| "github.com/gorilla/websocket" |
| ) |
| |
| func (s *InstanceService) WatchPreOpera(ctx context.Context, in *pb.WatchInstanceRequest) error { |
| if in == nil || len(in.SelfServiceId) == 0 { |
| return errors.New("Request format invalid.") |
| } |
| domainProject := util.ParseDomainProject(ctx) |
| if !serviceUtil.ServiceExist(ctx, domainProject, in.SelfServiceId) { |
| return errors.New("Service does not exist.") |
| } |
| return nil |
| } |
| |
| func (s *InstanceService) Watch(in *pb.WatchInstanceRequest, stream pb.ServiceInstanceCtrl_WatchServer) error { |
| log.Infof("new a stream list and watch with service[%s]", in.SelfServiceId) |
| if err := s.WatchPreOpera(stream.Context(), in); err != nil { |
| log.Errorf(err, "service[%s] establish watch failed: invalid params", in.SelfServiceId) |
| return err |
| } |
| |
| return notify.DoStreamListAndWatch(stream.Context(), in.SelfServiceId, nil, stream) |
| } |
| |
| func (s *InstanceService) WebSocketWatch(ctx context.Context, in *pb.WatchInstanceRequest, conn *websocket.Conn) { |
| log.Infof("new a web socket watch with service[%s]", in.SelfServiceId) |
| if err := s.WatchPreOpera(ctx, in); err != nil { |
| notify.EstablishWebSocketError(conn, err) |
| return |
| } |
| notify.DoWebSocketListAndWatch(ctx, in.SelfServiceId, nil, conn) |
| } |
| |
| func (s *InstanceService) WebSocketListAndWatch(ctx context.Context, in *pb.WatchInstanceRequest, conn *websocket.Conn) { |
| log.Infof("new a web socket list and watch with service[%s]", in.SelfServiceId) |
| if err := s.WatchPreOpera(ctx, in); err != nil { |
| notify.EstablishWebSocketError(conn, err) |
| return |
| } |
| notify.DoWebSocketListAndWatch(ctx, in.SelfServiceId, func() ([]*pb.WatchInstanceResponse, int64) { |
| return serviceUtil.QueryAllProvidersInstances(ctx, in.SelfServiceId) |
| }, conn) |
| } |