/* 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.portals.samples; | |
import static org.apache.portals.samples.AsyncPortlet.ATTRIB_TIMEOUT; | |
import java.io.IOException; | |
import java.io.PrintWriter; | |
import java.io.StringWriter; | |
import java.util.logging.Logger; | |
import javax.inject.Inject; | |
import javax.portlet.PortletAsyncContext; | |
import javax.portlet.PortletAsyncEvent; | |
import javax.portlet.PortletAsyncListener; | |
import javax.portlet.ResourceRequest; | |
import javax.portlet.ResourceResponse; | |
import org.apache.portals.samples.AsyncDialogBean.TimeoutType; | |
/** | |
* @author Scott Nicklous | |
* | |
*/ | |
public class APListener implements PortletAsyncListener { | |
private static final Logger LOGGER = Logger.getLogger(APListener.class.getName()); | |
private long start = System.currentTimeMillis(); | |
@Inject private PortletRequestRandomNumberBean reqnum; | |
@Inject private AsyncDialogBean adb; | |
@Inject private APComplete completeBean; | |
/* | |
* (non-Javadoc) | |
* | |
* @see javax.servlet.AsyncListener#onComplete(javax.servlet.AsyncEvent) | |
*/ | |
@Override | |
public void onComplete(PortletAsyncEvent evt) throws IOException { | |
long delta = System.currentTimeMillis() - start; | |
StringBuilder txt = new StringBuilder(128); | |
txt.append("Listener: Completed. Execution time: ").append(delta).append(" milliseconds."); | |
LOGGER.fine(txt.toString()); | |
completeBean.setComplete(true); | |
} | |
/* | |
* (non-Javadoc) | |
* | |
* @see javax.servlet.AsyncListener#onError(javax.servlet.AsyncEvent) | |
*/ | |
@Override | |
public void onError(PortletAsyncEvent evt) throws IOException { | |
// this doesn't seem to get called when an error occurs in the executor | |
// thread. | |
long delta = System.currentTimeMillis() - start; | |
StringBuilder txt = new StringBuilder(128); | |
txt.append("Listener: Error after ").append(delta).append(" milliseconds."); | |
txt.append(", Exception: ").append(evt.getThrowable().getMessage()); | |
LOGGER.fine(txt.toString()); | |
evt.getPortletAsyncContext().complete(); | |
} | |
/* | |
* (non-Javadoc) | |
* | |
* @see javax.servlet.AsyncListener#onStartAsync(javax.servlet.AsyncEvent) | |
*/ | |
@Override | |
public void onStartAsync(PortletAsyncEvent evt) throws IOException { | |
long delta = System.currentTimeMillis() - start; | |
StringBuilder txt = new StringBuilder(128); | |
txt.append("Async started again after ").append(delta).append(" milliseconds."); | |
LOGGER.fine(txt.toString()); | |
// need to add this listener again so it gets called when finally | |
// complete. | |
PortletAsyncContext ctx = evt.getPortletAsyncContext(); | |
// ctx.addListener(this); | |
// Try to write some output. | |
try { | |
if (adb.isShowListener()) { | |
ResourceRequest req = ctx.getResourceRequest(); | |
ResourceResponse resp = ctx.getResourceResponse(); | |
txt.setLength(0); | |
txt.append("<div class='orangebox'>"); | |
txt.append("Listener: restarting async."); | |
txt.append("<span style='margin-left: 2em;'>"); | |
txt.append("Request number: ").append(reqnum.getRandomNumber()); | |
txt.append("</span>"); | |
txt.append("<span style='margin-left: 2em;'>"); | |
txt.append("Dispatcher type: ").append(req.getDispatcherType()); | |
txt.append("</span>"); | |
txt.append("</div>"); | |
resp.getWriter().write(txt.toString()); | |
} | |
} catch (Exception e) { | |
StringWriter sw = new StringWriter(); | |
PrintWriter pw = new PrintWriter(sw); | |
e.printStackTrace(pw); | |
pw.flush(); | |
LOGGER.fine("Exception producing output: \n" + sw.toString()); | |
} | |
} | |
/* | |
* (non-Javadoc) | |
* | |
* @see javax.servlet.AsyncListener#onTimeout(javax.servlet.AsyncEvent) | |
*/ | |
@Override | |
public void onTimeout(PortletAsyncEvent evt) throws IOException { | |
long delta = System.currentTimeMillis() - start; | |
try { | |
ResourceRequest req = evt.getPortletAsyncContext().getResourceRequest(); | |
if (adb.isShowListener()) { | |
StringBuilder txt = new StringBuilder(128); | |
txt.append("<div class='orangebox'>"); | |
txt.append("APListener: Timeout after ").append(delta).append(" milliseconds."); | |
txt.append("<span style='margin-left: 2em;'>"); | |
txt.append("Action: ").append(adb.getHandleTimeout().toString()); | |
txt.append("</span>"); | |
txt.append("<span style='margin-left: 2em;'>"); | |
txt.append("Request number: ").append(reqnum.getRandomNumber()); | |
txt.append("</span>"); | |
txt.append("<span style='margin-left: 2em;'>"); | |
txt.append("Dispatcher type: ").append(req.getDispatcherType()); | |
txt.append("</span>"); | |
txt.append("</div>"); | |
PrintWriter writer = evt.getPortletAsyncContext().getResourceResponse().getWriter(); | |
writer.println(txt.toString()); | |
} | |
if (adb.getHandleTimeout() == TimeoutType.CPL) { | |
evt.getPortletAsyncContext().complete(); | |
} else if (adb.getHandleTimeout() == TimeoutType.DIS) { | |
req.setAttribute(ATTRIB_TIMEOUT, ATTRIB_TIMEOUT); | |
evt.getPortletAsyncContext().dispatch(); | |
} | |
} catch (Exception e) { | |
LOGGER.warning(" Couldn't get response to generate output. Exception: " + e.toString()); | |
} | |
} | |
} |