| /* |
| * 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.drill.exec.rpc; |
| |
| import io.netty.buffer.ByteBuf; |
| |
| import org.apache.drill.shaded.guava.com.google.common.util.concurrent.AbstractCheckedFuture; |
| import org.apache.drill.shaded.guava.com.google.common.util.concurrent.AbstractFuture; |
| |
| class DrillRpcFutureImpl<V> extends AbstractCheckedFuture<V, RpcException> implements DrillRpcFuture<V>, RpcOutcomeListener<V>{ |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(DrillRpcFutureImpl.class); |
| |
| private volatile ByteBuf buffer; |
| |
| public DrillRpcFutureImpl() { |
| super(new InnerFuture<V>()); |
| } |
| |
| @Override |
| protected RpcException mapException(Exception ex) { |
| return RpcException.mapException(ex); |
| } |
| |
| private static class InnerFuture<T> extends AbstractFuture<T> { |
| // we rewrite these so that the parent can see them |
| |
| void setValue(T value) { |
| super.set(value); |
| } |
| |
| @Override |
| protected boolean setException(Throwable t) { |
| return super.setException(t); |
| } |
| } |
| |
| @Override |
| public void failed(RpcException ex) { |
| ( (InnerFuture<V>)delegate()).setException(ex); |
| } |
| |
| @Override |
| public void success(V value, ByteBuf buffer) { |
| this.buffer = buffer; |
| ( (InnerFuture<V>)delegate()).setValue(value); |
| } |
| |
| @Override |
| public void interrupted(final InterruptedException ex) { |
| // Propagate the interrupt to inner future |
| ( (InnerFuture<V>)delegate()).cancel(true); |
| } |
| |
| @Override |
| public ByteBuf getBuffer() { |
| return buffer; |
| } |
| |
| public void release() { |
| if (buffer != null) { |
| buffer.release(); |
| } |
| } |
| |
| } |