com.liferay.portal.servlet.filters.unsyncprintwriterpool.UnsyncPrintWriterPoolFilter Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*/
package com.liferay.portal.servlet.filters.unsyncprintwriterpool;
import com.liferay.portal.kernel.servlet.TryFinallyFilter;
import com.liferay.portal.kernel.util.UnsyncPrintWriterPool;
import com.liferay.portal.servlet.filters.BasePortalFilter;
import javax.servlet.AsyncContext;
import javax.servlet.AsyncEvent;
import javax.servlet.AsyncListener;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author Shuyang Zhou
*/
public class UnsyncPrintWriterPoolFilter
extends BasePortalFilter implements TryFinallyFilter {
@Override
public void doFilterFinally(
HttpServletRequest request, HttpServletResponse response,
Object object) {
if (request.isAsyncSupported() && request.isAsyncStarted()) {
AsyncContext asyncContext = request.getAsyncContext();
asyncContext.addListener(
new UnsyncPrintWriterPoolFilterAsyncListener(asyncContext));
}
else {
UnsyncPrintWriterPool.cleanUp();
}
}
@Override
public Object doFilterTry(
HttpServletRequest request, HttpServletResponse response) {
UnsyncPrintWriterPool.setEnabled(true);
return null;
}
private static class UnsyncPrintWriterPoolFilterAsyncListener
implements AsyncListener {
@Override
public void onComplete(AsyncEvent asyncEvent) {
UnsyncPrintWriterPool.cleanUp();
}
@Override
public void onError(AsyncEvent asyncEvent) {
}
@Override
public void onStartAsync(AsyncEvent asyncEvent) {
_asyncContext.addListener(this);
}
@Override
public void onTimeout(AsyncEvent asyncEvent) {
}
private UnsyncPrintWriterPoolFilterAsyncListener(
AsyncContext asyncContext) {
_asyncContext = asyncContext;
}
private final AsyncContext _asyncContext;
}
}