| /* |
| * 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.geode.internal.cache.execute; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.geode.cache.execute.Execution; |
| import org.apache.geode.cache.execute.Function; |
| import org.apache.geode.cache.execute.FunctionException; |
| import org.apache.geode.cache.execute.FunctionInvocationTargetException; |
| import org.apache.geode.cache.execute.ResultCollector; |
| import org.apache.geode.distributed.DistributedMember; |
| import org.apache.geode.distributed.internal.ReplyProcessor21; |
| |
| public class LocalResultCollectorImpl implements LocalResultCollector { |
| |
| private final ResultCollector userRC; |
| |
| private CountDownLatch latch = new CountDownLatch(1); |
| |
| protected volatile boolean endResultReceived = false; |
| |
| private volatile boolean resultCollected = false; |
| |
| protected volatile boolean resultsCleared = false; |
| |
| private FunctionException functionException = null; |
| |
| private Function function = null; |
| |
| private AbstractExecution execution = null; |
| |
| public LocalResultCollectorImpl(Function function, ResultCollector rc, Execution execution) { |
| this.function = function; |
| this.userRC = rc; |
| this.execution = (AbstractExecution) execution; |
| } |
| |
| @Override |
| public synchronized void addResult(DistributedMember memberID, Object resultOfSingleExecution) { |
| if (resultsCleared) { |
| return; |
| } |
| if (!this.endResultReceived) { |
| if (resultOfSingleExecution instanceof Throwable) { |
| Throwable t = (Throwable) resultOfSingleExecution; |
| if (this.execution.isIgnoreDepartedMembers()) { |
| if (t.getCause() != null) { |
| t = t.getCause(); |
| } |
| this.userRC.addResult(memberID, t); |
| } else { |
| if (!(t instanceof InternalFunctionException)) { |
| if (this.functionException == null) { |
| if (resultOfSingleExecution instanceof FunctionInvocationTargetException) { |
| this.functionException = new FunctionException(t); |
| } else if (resultOfSingleExecution instanceof FunctionException) { |
| this.functionException = (FunctionException) resultOfSingleExecution; |
| if (t.getCause() != null) { |
| t = t.getCause(); |
| } |
| } else { |
| this.functionException = new FunctionException(t); |
| } |
| } |
| this.functionException.addException(t); |
| } else { |
| this.userRC.addResult(memberID, t.getCause()); |
| } |
| } |
| } else { |
| this.userRC.addResult(memberID, resultOfSingleExecution); |
| } |
| } |
| } |
| |
| @Override |
| public void endResults() { |
| this.endResultReceived = true; |
| this.userRC.endResults(); |
| this.latch.countDown(); |
| } |
| |
| @Override |
| public synchronized void clearResults() { |
| this.latch = new CountDownLatch(1); |
| this.endResultReceived = false; |
| this.functionException = null; |
| this.userRC.clearResults(); |
| resultsCleared = true; |
| } |
| |
| @Override |
| public Object getResult() throws FunctionException { |
| if (this.resultCollected) { |
| throw new FunctionException( |
| "Function results already collected"); |
| } |
| this.resultCollected = true; |
| try { |
| this.latch.await(); |
| } catch (InterruptedException e) { |
| this.latch.countDown(); |
| Thread.currentThread().interrupt(); |
| } |
| this.latch = new CountDownLatch(1); |
| if (this.functionException != null && !this.execution.isIgnoreDepartedMembers()) { |
| if (this.function.isHA()) { |
| if (this.functionException |
| .getCause() instanceof InternalFunctionInvocationTargetException) { |
| clearResults(); |
| this.execution = this.execution.setIsReExecute(); |
| ResultCollector newRc = null; |
| if (execution.isFnSerializationReqd()) { |
| newRc = this.execution.execute(this.function); |
| } else { |
| newRc = this.execution.execute(this.function.getId()); |
| } |
| return newRc.getResult(); |
| } |
| } |
| throw this.functionException; |
| } else { |
| Object result = this.userRC.getResult(); |
| return result; |
| } |
| } |
| |
| @Override |
| public Object getResult(long timeout, TimeUnit unit) |
| throws FunctionException, InterruptedException { |
| |
| boolean resultReceived = false; |
| if (this.resultCollected) { |
| throw new FunctionException( |
| "Function results already collected"); |
| } |
| this.resultCollected = true; |
| try { |
| resultReceived = this.latch.await(timeout, unit); |
| } catch (InterruptedException e) { |
| this.latch.countDown(); |
| Thread.currentThread().interrupt(); |
| } |
| if (!resultReceived) { |
| throw new FunctionException( |
| "All results not received in time provided"); |
| } |
| this.latch = new CountDownLatch(1); |
| if (this.functionException != null && !this.execution.isIgnoreDepartedMembers()) { |
| if (this.function.isHA()) { |
| if (this.functionException |
| .getCause() instanceof InternalFunctionInvocationTargetException) { |
| clearResults(); |
| this.execution = this.execution.setIsReExecute(); |
| ResultCollector newRc = null; |
| if (execution.isFnSerializationReqd()) { |
| newRc = this.execution.execute(this.function); |
| } else { |
| newRc = this.execution.execute(this.function.getId()); |
| } |
| return newRc.getResult(timeout, unit); |
| } |
| } |
| throw this.functionException; |
| } else { |
| Object result = this.userRC.getResult(timeout, unit); |
| return result; |
| } |
| } |
| |
| @Override |
| public void setException(Throwable exception) { |
| if (exception instanceof FunctionException) { |
| this.functionException = (FunctionException) exception; |
| } else { |
| this.functionException = new FunctionException(exception); |
| } |
| } |
| |
| @Override |
| public ReplyProcessor21 getProcessor() { |
| // not expected to be invoked |
| return null; |
| } |
| |
| @Override |
| public void setProcessor(ReplyProcessor21 processor) { |
| // nothing to be done here since FunctionStreamingResultCollector that |
| // wraps this itself implements ReplyProcessor21 and is returned as |
| // the ResultCollector so cannot get GCed |
| } |
| } |