/*
* Copyright 2014 Jeanfrancois Arcand
*
* 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 org.atmosphere.weblogic;
import org.atmosphere.cpr.Action;
import org.atmosphere.cpr.AsynchronousProcessor;
import org.atmosphere.cpr.AtmosphereFramework;
import org.atmosphere.cpr.AtmosphereRequest;
import org.atmosphere.cpr.AtmosphereResponse;
import org.atmosphere.cpr.AtmosphereServlet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import weblogic.servlet.http.AbstractAsyncServlet;
import weblogic.servlet.http.RequestResponseKey;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import java.io.IOException;
/**
* WebLogic Comet implementation.
*/
public class AtmosphereWebLogicServlet extends AbstractAsyncServlet {
protected static final Logger logger = LoggerFactory.getLogger(AtmosphereServlet.class);
protected AtmosphereFramework framework;
/**
* Create an Atmosphere Servlet.
*/
public AtmosphereWebLogicServlet() {
this(false);
}
/**
* Create an Atmosphere Servlet.
*
* @param isFilter true if this instance is used as an {@link org.atmosphere.cpr.AtmosphereFilter}
*/
public AtmosphereWebLogicServlet(boolean isFilter) {
this(isFilter, true);
}
/**
* Create an Atmosphere Servlet.
*
* @param isFilter true if this instance is used as an {@link org.atmosphere.cpr.AtmosphereFilter}
*/
public AtmosphereWebLogicServlet(boolean isFilter, boolean autoDetectHandlers) {
framework = new AtmosphereFramework(isFilter, autoDetectHandlers);
}
@Override
public void destroy() {
framework.destroy();
}
public void init(final ServletConfig sc) throws ServletException {
super.init(sc);
framework.setAsyncSupport(new WebLogicCometSupport(framework.getAtmosphereConfig()));
framework.init(sc);
}
public AtmosphereFramework framework() {
return framework;
}
/**
* Weblogic specific comet based implementation.
*
* @param rrk
* @return true if suspended
* @throws java.io.IOException
* @throws javax.servlet.ServletException
*/
protected boolean doRequest(RequestResponseKey rrk) throws IOException, ServletException {
try {
rrk.getRequest().getSession().setAttribute(WebLogicCometSupport.RRK, rrk);
Action action = framework.doCometSupport(AtmosphereRequest.wrap(rrk.getRequest()), AtmosphereResponse.wrap(rrk.getResponse()));
if (action.type() == Action.TYPE.SUSPEND) {
if (action.timeout() == -1) {
rrk.setTimeout(Integer.MAX_VALUE);
} else {
rrk.setTimeout((int) action.timeout());
}
}
return action.type() == Action.TYPE.SUSPEND;
} catch (IllegalStateException ex) {
logger.error("AtmosphereServlet.doRequest exception", ex);
throw ex;
}
}
/**
* Weblogic specific comet based implementation.
*
* @param rrk
* @throws java.io.IOException
* @throws javax.servlet.ServletException
*/
protected void doResponse(RequestResponseKey rrk, Object context)
throws IOException, ServletException {
rrk.getResponse().flushBuffer();
}
/**
* Weblogic specific comet based implementation.
*
* @param rrk
* @throws java.io.IOException
* @throws javax.servlet.ServletException
*/
protected void doTimeout(RequestResponseKey rrk) throws IOException, ServletException {
((AsynchronousProcessor) framework.getAsyncSupport()).timedout(AtmosphereRequest.wrap(rrk.getRequest()),
AtmosphereResponse.wrap(rrk.getResponse()));
}
}