hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncServerRequestRpcRetryingCaller.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.client;
  19
  20 import static org.apache.hadoop.hbase.util.FutureUtils.addListener;
  21
  22 import java.io.IOException;
  23 import java.util.concurrent.CompletableFuture;
  24 import org.apache.hadoop.hbase.HConstants;
  25 import org.apache.hadoop.hbase.ServerName;
  26 import org.apache.hadoop.hbase.ipc.HBaseRpcController;
  27 import org.apache.yetus.audience.InterfaceAudience;
  28
  29 import org.apache.hbase.thirdparty.io.netty.util.Timer;
  30
  31 import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService;
  32
  33 /**
  34  * Retry caller for a request call to region server.
  35  * Now only used for coprocessor call to region server.
  36  */
  37 @InterfaceAudience.Private
  38 public class AsyncServerRequestRpcRetryingCaller<T> extends AsyncRpcRetryingCaller<T> {
  39
  40   @FunctionalInterface
  41   public interface Callable<T> {
  42     CompletableFuture<T> call(HBaseRpcController controller, ClientService.Interface stub);
  43   }
  44
  45   private final Callable<T> callable;
  46   private ServerName serverName;
  47
  48   public AsyncServerRequestRpcRetryingCaller(Timer retryTimer, AsyncConnectionImpl conn,
  49       long pauseNs, long pauseForCQTBENs, int maxAttempts, long operationTimeoutNs,
  50       long rpcTimeoutNs, int startLogErrorsCnt, ServerName serverName, Callable<T> callable) {
  51     super(retryTimer, conn, HConstants.NORMAL_QOS, pauseNs, pauseForCQTBENs, maxAttempts,
  52       operationTimeoutNs, rpcTimeoutNs, startLogErrorsCnt);
  53     this.serverName = serverName;
  54     this.callable = callable;
  55   }
  56
  57   @Override
  58   protected void doCall() {
  59     ClientService.Interface stub;
  60     try {
  61       stub = this.conn.getRegionServerStub(serverName);
  62     } catch (IOException e) {
  63       onError(e, () -> "Get async admin stub to " + serverName + " failed", err -> {
  64       });
  65       return;
  66     }
  67     resetCallTimeout();
  68     addListener(callable.call(controller, stub), (result, error) -> {
  69       if (error != null) {
  70         onError(error, () -> "Call to admin stub failed", err -> {
  71         });
  72         return;
  73       }
  74       future.complete(result);
  75     });
  76   }
  77 }