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.util.concurrent.CompletableFuture;
023import org.apache.hadoop.hbase.exceptions.ClientExceptionsUtil;
024import org.apache.hadoop.hbase.ipc.HBaseRpcController;
025import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
026import org.apache.yetus.audience.InterfaceAudience;
027
028import org.apache.hbase.thirdparty.io.netty.util.Timer;
029
030import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.MasterService;
031
032/**
033 * Retry caller for a request call to master.
034 * @since 2.0.0
035 */
036@InterfaceAudience.Private
037public class AsyncMasterRequestRpcRetryingCaller<T> extends AsyncRpcRetryingCaller<T> {
038
039  @FunctionalInterface
040  public interface Callable<T> {
041    CompletableFuture<T> call(HBaseRpcController controller, MasterService.Interface stub);
042  }
043
044  private final Callable<T> callable;
045
046  public AsyncMasterRequestRpcRetryingCaller(Timer retryTimer, AsyncConnectionImpl conn,
047    Callable<T> callable, int priority, long pauseNs, long pauseNsForServerOverloaded,
048    int maxRetries, long operationTimeoutNs, long rpcTimeoutNs, int startLogErrorsCnt) {
049    super(retryTimer, conn, priority, pauseNs, pauseNsForServerOverloaded, maxRetries,
050      operationTimeoutNs, rpcTimeoutNs, startLogErrorsCnt);
051    this.callable = callable;
052  }
053
054  private void clearMasterStubCacheOnError(MasterService.Interface stub, Throwable error) {
055    // ServerNotRunningYetException may because it is the backup master.
056    if (
057      ClientExceptionsUtil.isConnectionException(error)
058        || error instanceof ServerNotRunningYetException
059    ) {
060      conn.clearMasterStubCache(stub);
061    }
062  }
063
064  @Override
065  protected void doCall() {
066    addListener(conn.getMasterStub(), (stub, error) -> {
067      if (error != null) {
068        onError(error, () -> "Get async master stub failed", err -> {
069        });
070        return;
071      }
072      resetCallTimeout();
073      addListener(callable.call(controller, stub), (result, error2) -> {
074        if (error2 != null) {
075          onError(error2, () -> "Call to master failed",
076            err -> clearMasterStubCacheOnError(stub, error2));
077          return;
078        }
079        future.complete(result);
080      });
081    });
082  }
083}