/*******************************************************************************
* Copyright 2014 University of Southern California
*
* 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.
*
* This code was developed by the Information Integration Group as part
* of the Karma project at the Information Sciences Institute of the
* University of Southern California. For more information, publications,
* and related projects, please see: http://www.isi.edu/integration
******************************************************************************/
package edu.isi.karma.kr2rml.planning;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import edu.isi.karma.kr2rml.ErrorReport;
import edu.isi.karma.kr2rml.ErrorReport.Priority;
import edu.isi.karma.kr2rml.ReportMessage;
public class TriplesMapPlanExecutor {
private static Logger LOG = LoggerFactory.getLogger(TriplesMapPlanExecutor.class);
private ExecutorService service = Executors.newFixedThreadPool(10);
public ErrorReport execute(TriplesMapPlan plan)
{
ErrorReport errorReport = new ErrorReport();
//TODO Handle exceptions/waiting for results better
try {
List<Future<Boolean>> results = new LinkedList<Future<Boolean>>();
for(TriplesMapWorker worker : plan.workers)
{
results.add(service.submit(worker));
}
for(Future<Boolean> result : results)
{
result.get(1, TimeUnit.MINUTES);
}
} catch (Exception e) {
LOG.error("Unable to finish executing plan", e);
errorReport.addReportMessage(new ReportMessage("Triples Map Plan Execution Error", e.getMessage(), Priority.high));
shutdown(errorReport);
service = Executors.newFixedThreadPool(10);
}
return errorReport;
}
public void shutdown(ErrorReport errorReport) {
List<Runnable> unfinishedWorkers = service.shutdownNow();
for(Runnable unfinishedWorker : unfinishedWorkers)
{
if(unfinishedWorker instanceof TriplesMapWorker)
{
TriplesMapWorker unfinishedTriplesMapWorker = (TriplesMapWorker) unfinishedWorker;
errorReport.addReportMessage(new ReportMessage("Triples Map Plan Execution Error", unfinishedTriplesMapWorker.toString() + " was unable to complete", Priority.high));
}
}
}
}