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 static org.apache.hadoop.hbase.util.FutureUtils.addListener;
021
022import java.io.IOException;
023import java.util.concurrent.CompletableFuture;
024import org.apache.hadoop.hbase.HConstants;
025import org.apache.hadoop.hbase.ServerName;
026import org.apache.hadoop.hbase.ipc.HBaseRpcController;
027import org.apache.yetus.audience.InterfaceAudience;
028
029import org.apache.hbase.thirdparty.io.netty.util.Timer;
030
031import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService;
032
033/**
034 * Retry caller for a request call to region server.
035 * Now only used for coprocessor call to region server.
036 */
037@InterfaceAudience.Private
038public class AsyncServerRequestRpcRetryingCaller<T> extends AsyncRpcRetryingCaller<T> {
039
040  @FunctionalInterface
041  public interface Callable<T> {
042    CompletableFuture<T> call(HBaseRpcController controller, ClientService.Interface stub);
043  }
044
045  private final Callable<T> callable;
046  private ServerName serverName;
047
048  public AsyncServerRequestRpcRetryingCaller(Timer retryTimer, AsyncConnectionImpl conn,
049      long pauseNs, long pauseForCQTBENs, int maxAttempts, long operationTimeoutNs,
050      long rpcTimeoutNs, int startLogErrorsCnt, ServerName serverName, Callable<T> callable) {
051    super(retryTimer, conn, HConstants.NORMAL_QOS, pauseNs, pauseForCQTBENs, maxAttempts,
052      operationTimeoutNs, rpcTimeoutNs, startLogErrorsCnt);
053    this.serverName = serverName;
054    this.callable = callable;
055  }
056
057  @Override
058  protected void doCall() {
059    ClientService.Interface stub;
060    try {
061      stub = this.conn.getRegionServerStub(serverName);
062    } catch (IOException e) {
063      onError(e, () -> "Get async admin stub to " + serverName + " failed", err -> {
064      });
065      return;
066    }
067    resetCallTimeout();
068    addListener(callable.call(controller, stub), (result, error) -> {
069      if (error != null) {
070        onError(error, () -> "Call to admin stub failed", err -> {
071        });
072        return;
073      }
074      future.complete(result);
075    });
076  }
077}