com.ibm.jbatch.container.services.impl.JSEResultAdapter Maven / Gradle / Ivy
/*
* Copyright 2012 International Business Machines Corp.
*
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. Licensed 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 com.ibm.jbatch.container.services.impl;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.ibm.jbatch.container.exception.BatchContainerServiceException;
import com.ibm.jbatch.spi.services.ParallelTaskResult;
/*
* An adapter class for a Future object so we can wait for parallel threads/steps/flows to finish before continuing
*/
public class JSEResultAdapter implements ParallelTaskResult {
private final static String sourceClass = JSEResultAdapter.class.getName();
private final static Logger logger = Logger.getLogger(sourceClass);
private Future result;
public JSEResultAdapter(Future result) {
this.result = result;
}
@Override
public void waitForResult() {
try {
result.get();
} catch (InterruptedException e) {
throw new BatchContainerServiceException("Parallel thread was interrupted while waiting for result.", e);
} catch (ExecutionException e) {
//We will handle this case through a failed batch status. We will not propagate the exception
//through the entire thread.
if (logger.isLoggable(Level.FINE)) {
logger.fine(sourceClass + ": caught exception/error: " + e.getMessage() + " : Stack trace: " + e.getCause().toString());
}
} catch (CancellationException e) {
throw new BatchContainerServiceException("Parallel thread was canceled before completion.", e);
}
}
}