content: /**
   * Copyright 2020 Alibaba Group Holding Limited.
   *
   * <p>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
   *
   * <p>http://www.apache.org/licenses/LICENSE-2.0
   *
   * <p>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.graphscope.groot.coordinator;
  
  import com.alibaba.graphscope.groot.CompletionCallback;
  import com.alibaba.graphscope.groot.rpc.RpcChannel;
  import com.alibaba.graphscope.groot.rpc.RpcClient;
  import com.alibaba.graphscope.proto.groot.AdvanceIngestSnapshotIdRequest;
  import com.alibaba.graphscope.proto.groot.AdvanceIngestSnapshotIdResponse;
  import com.alibaba.graphscope.proto.groot.IngestorSnapshotGrpc;
  
  import io.grpc.ManagedChannel;
  import io.grpc.stub.StreamObserver;
  
  public class IngestorSnapshotClient extends RpcClient {
  
      public IngestorSnapshotClient(RpcChannel channel) {
          super(channel);
      }
  
      public IngestorSnapshotClient(IngestorSnapshotGrpc.IngestorSnapshotStub stub) {
          super((ManagedChannel) stub.getChannel());
      }
  
      private IngestorSnapshotGrpc.IngestorSnapshotStub getStub() {
          return IngestorSnapshotGrpc.newStub(rpcChannel.getChannel());
      }
  
      public void advanceIngestSnapshotId(long writeSnapshotId, CompletionCallback<Long> callback) {
          AdvanceIngestSnapshotIdRequest req =
                  AdvanceIngestSnapshotIdRequest.newBuilder().setSnapshotId(writeSnapshotId).build();
          getStub()
                  .advanceIngestSnapshotId(
                          req,
                          new StreamObserver<AdvanceIngestSnapshotIdResponse>() {
                              @Override
                              public void onNext(AdvanceIngestSnapshotIdResponse response) {
                                  long previousSnapshotId = response.getPreviousSnapshotId();
                                  callback.onCompleted(previousSnapshotId);
                              }
  
                              @Override
                              public void onError(Throwable throwable) {
                                  callback.onError(throwable);
                              }
  
                              @Override
                              public void onCompleted() {}
                          });
      }
  }
  