001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.client;
019
020import java.util.concurrent.CompletableFuture;
021import org.apache.hadoop.hbase.ipc.HBaseRpcController;
022import org.apache.yetus.audience.InterfaceAudience;
023
024import org.apache.hbase.thirdparty.io.netty.util.Timer;
025
026import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.MasterService;
027
028/**
029 * Retry caller for a request call to master.
030 * @since 2.0.0
031 */
032@InterfaceAudience.Private
033public class AsyncMasterRequestRpcRetryingCaller<T> extends AsyncRpcRetryingCaller<T> {
034
035  @FunctionalInterface
036  public interface Callable<T> {
037    CompletableFuture<T> call(HBaseRpcController controller, MasterService.Interface stub);
038  }
039
040  private final Callable<T> callable;
041
042  public AsyncMasterRequestRpcRetryingCaller(Timer retryTimer, AsyncConnectionImpl conn,
043      Callable<T> callable, long pauseNs, int maxRetries, long operationTimeoutNs,
044      long rpcTimeoutNs, int startLogErrorsCnt) {
045    super(retryTimer, conn, pauseNs, maxRetries, operationTimeoutNs, rpcTimeoutNs,
046        startLogErrorsCnt);
047    this.callable = callable;
048  }
049
050  @Override
051  protected void doCall() {
052    conn.getMasterStub().whenComplete((stub, error) -> {
053      if (error != null) {
054        onError(error, () -> "Get async master stub failed", err -> {
055        });
056        return;
057      }
058      resetCallTimeout();
059      callable.call(controller, stub).whenComplete((result, error2) -> {
060        if (error2 != null) {
061          onError(error2, () -> "Call to master failed", err -> {
062          });
063          return;
064        }
065        future.complete(result);
066      });
067    });
068  }
069}