content: /*
   * Copyright 1999-2022 Alibaba Group Holding Ltd.
   *
   * 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 com.alibaba.nacos.istio.xds;
  
  import com.alibaba.nacos.istio.common.AbstractConnection;
  import com.alibaba.nacos.istio.common.WatchedStatus;
  import com.alibaba.nacos.istio.misc.Loggers;
  import io.envoyproxy.envoy.service.discovery.v3.DeltaDiscoveryResponse;
  import io.grpc.stub.StreamObserver;
  
  /**
   * @author RocketEngine26
   * @date 2022/8/20 下午10:46
   */
  public class DeltaConnection extends AbstractConnection<DeltaDiscoveryResponse> {
      
      public DeltaConnection(StreamObserver<DeltaDiscoveryResponse> streamObserver) {
          super(streamObserver);
      }
      
      @Override
      public void push(DeltaDiscoveryResponse response, WatchedStatus watchedStatus) {
          if (Loggers.MAIN.isDebugEnabled()) {
              Loggers.MAIN.debug("DeltaDiscoveryResponse: {}", response.toString());
          }
          
          Loggers.MAIN.info("DeltaDiscoveryResponse: {}", response.toString());
          
          this.streamObserver.onNext(response);
          
          // Update watched status
          watchedStatus.setLatestVersion(response.getSystemVersionInfo());
          watchedStatus.setLatestNonce(response.getNonce());
          
          Loggers.MAIN.info("delta: push, type: {}, connection-id {}, version {}, nonce {}, resource size {}.",
                  watchedStatus.getType(),
                  getConnectionId(),
                  response.getSystemVersionInfo(),
                  response.getNonce(),
                  response.getResourcesCount());
      }
  }
  
  