SocialServiceExecutorImpl.java
/*
* Copyright (C) 2003-2013 eXo Platform SAS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.exoplatform.social.common.service.impl;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.exoplatform.social.common.service.AsyncCallback;
import org.exoplatform.social.common.service.AsyncProcessor;
import org.exoplatform.social.common.service.LogWatchCallable;
import org.exoplatform.social.common.service.ProcessContext;
import org.exoplatform.social.common.service.Processor;
import org.exoplatform.social.common.service.ServiceContext;
import org.exoplatform.social.common.service.SocialServiceExecutor;
import org.exoplatform.social.common.service.utils.AsyncProcessorTool;
public class SocialServiceExecutorImpl implements SocialServiceExecutor {
private ExecutorService executor;
public SocialServiceExecutorImpl() {
}
public SocialServiceExecutorImpl(ExecutorService executor) {
this.executor = executor;
}
@Override
public ProcessContext execute(ServiceContext<ProcessContext> serviceContext, ProcessContext processContext) {
processContext.getTraceElement().start();
try {
return serviceContext.execute(processContext);
} finally {
processContext.getTraceElement().end();
}
}
@Override
public ProcessContext execute(Processor processor, ProcessContext processContext) {
processContext.getTraceElement().start();
try {
return processor.process(processContext);
} finally {
processContext.getTraceElement().end();
}
}
@Override
public void setExecutorService(ExecutorService executorService) {
this.executor = executorService;
}
@Override
public Future<ProcessContext> asyncProcess(final AsyncProcessor asyncProcessor, final ProcessContext processorContext) {
Callable<ProcessContext> task = new Callable<ProcessContext>() {
public ProcessContext call() throws Exception {
return process(asyncProcessor, processorContext);
}
};
if (SocialServiceContextImpl.getInstance().isTraced()) {
task = new LogWatchCallable<ProcessContext>(task, processorContext.getTraceElement());
}
return getExecutorService().submit(task);
}
/**
* Processes Async Processor with ProcessContext
* @param asyncProcessor
* @param processorContext
* @return
* @throws Exception
*/
protected ProcessContext process(AsyncProcessor asyncProcessor,
ProcessContext processorContext) throws Exception {
AsyncProcessorTool.process(asyncProcessor, processorContext);
return processorContext;
}
private ExecutorService getExecutorService() {
if (executor != null) {
return executor;
}
// create a default executor which must be synchronized
synchronized (this) {
if (executor != null) {
return executor;
}
executor = SocialServiceContextImpl.getInstance().getExecutorServiceManager().newDefaultThreadPool("DefaultSocialExecutor");
}
return executor;
}
@Override
public ProcessContext async(AsyncProcessor asyncProcessor, ProcessContext processContext) {
Future<ProcessContext> future = asyncProcess(asyncProcessor, processContext);
try {
future.get(20, TimeUnit.MILLISECONDS);
//
return future.get();
} catch (InterruptedException e) {
processContext.setException(e);
} catch (ExecutionException e) {
processContext.setException(e);
} catch (TimeoutException e) {
processContext.setException(e);
}
return processContext;
}
@Override
public ProcessContext async(final AsyncProcessor asyncProcessor,
final ProcessContext processContext,
final AsyncCallback callback) {
Callable<ProcessContext> task = new Callable<ProcessContext>() {
public ProcessContext call() throws Exception {
return asyncProcessor.process(processContext, callback);
}
};
if (SocialServiceContextImpl.getInstance().isTraced()) {
task = new LogWatchCallable<ProcessContext>(task, processContext.getTraceElement());
}
Future<ProcessContext> future = getExecutorService().submit(task);
try {
//Change timeout for Future when run debug mode
future.get(20, TimeUnit.MILLISECONDS);
//
return future.get();
} catch (InterruptedException e) {
processContext.setException(e);
} catch (ExecutionException e) {
processContext.setException(e);
} catch (TimeoutException e) {
processContext.setException(e);
}
return processContext;
}
}