/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 * * http://www.apache.org/licenses/LICENSE-2.0 * * 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 org.apache.hadoop.hbase.client; import static org.apache.hadoop.hbase.client.ConnectionUtils.setCoprocessorError; import static org.apache.hadoop.hbase.util.FutureUtils.addListener; import java.io.IOException; import java.util.concurrent.CompletableFuture; import java.util.concurrent.TimeUnit; import org.apache.hadoop.hbase.DoNotRetryIOException; import org.apache.hadoop.hbase.HRegionLocation; import org.apache.hadoop.hbase.TableName; import org.apache.hadoop.hbase.ipc.CoprocessorRpcUtils; import org.apache.hadoop.hbase.ipc.HBaseRpcController; import org.apache.hadoop.hbase.util.Bytes; import org.apache.yetus.audience.InterfaceAudience; import org.apache.hbase.thirdparty.com.google.protobuf.Descriptors.MethodDescriptor; import org.apache.hbase.thirdparty.com.google.protobuf.Message; import org.apache.hbase.thirdparty.com.google.protobuf.RpcCallback; import org.apache.hbase.thirdparty.com.google.protobuf.RpcChannel; import org.apache.hbase.thirdparty.com.google.protobuf.RpcController; import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService; import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceRequest; import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceResponse; /** * The implementation of a region based coprocessor rpc channel. */ @InterfaceAudience.Private class RegionCoprocessorRpcChannelImpl implements RpcChannel { private final AsyncConnectionImpl conn; private final TableName tableName; private final RegionInfo region; private final byte[] row; private final long rpcTimeoutNs; private final long operationTimeoutNs; private byte[] lastRegion; RegionCoprocessorRpcChannelImpl(AsyncConnectionImpl conn, TableName tableName, RegionInfo region, byte[] row, long rpcTimeoutNs, long operationTimeoutNs) { this.conn = conn; this.tableName = tableName; this.region = region; this.row = row; this.rpcTimeoutNs = rpcTimeoutNs; this.operationTimeoutNs = operationTimeoutNs; } private CompletableFuture<Message> rpcCall(MethodDescriptor method, Message request, Message responsePrototype, HBaseRpcController controller, HRegionLocation loc, ClientService.Interface stub) { CompletableFuture<Message> future = new CompletableFuture<>(); if (region != null && !Bytes.equals(loc.getRegion().getRegionName(), region.getRegionName())) { future.completeExceptionally(new DoNotRetryIOException("Region name is changed, expected " + region.getRegionNameAsString() + ", actual " + loc.getRegion().getRegionNameAsString())); return future; } CoprocessorServiceRequest csr = CoprocessorRpcUtils.getCoprocessorServiceRequest(method, request, row, loc.getRegion().getRegionName()); stub.execService(controller, csr, new org.apache.hbase.thirdparty.com.google.protobuf.RpcCallback<CoprocessorServiceResponse>() { @Override public void run(CoprocessorServiceResponse resp) { if (controller.failed()) { future.completeExceptionally(controller.getFailed()); } else { lastRegion = resp.getRegion().getValue().toByteArray(); try { future.complete(CoprocessorRpcUtils.getResponse(resp, responsePrototype)); } catch (IOException e) { future.completeExceptionally(e); } } } }); return future; } @Override public void callMethod(MethodDescriptor method, RpcController controller, Message request, Message responsePrototype, RpcCallback<Message> done) { addListener( conn.callerFactory.<Message> single().table(tableName).row(row) .locateType(RegionLocateType.CURRENT).rpcTimeout(rpcTimeoutNs, TimeUnit.NANOSECONDS) .operationTimeout(operationTimeoutNs, TimeUnit.NANOSECONDS) .action((c, l, s) -> rpcCall(method, request, responsePrototype, c, l, s)).call(), (r, e) -> { if (e != null) { setCoprocessorError(controller, e); } done.run(r); }); } public byte[] getLastRegion() { return lastRegion; } }