org.apache.cxf.transport.http_jetty.continuations.JettyContinuationWrapper Maven / Gradle / Ivy
/**
* 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.cxf.transport.http_jetty.continuations;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.cxf.continuations.Continuation;
import org.apache.cxf.message.Message;
import org.apache.cxf.transport.http.AbstractHTTPDestination;
import org.eclipse.jetty.continuation.ContinuationListener;
import org.eclipse.jetty.server.AsyncContext;
import org.eclipse.jetty.server.Request;
public class JettyContinuationWrapper implements Continuation, ContinuationListener {
volatile boolean isNew;
volatile boolean isResumed;
volatile boolean isPending;
volatile Object obj;
private Message message;
private final AsyncContext context;
private final Request req;
public JettyContinuationWrapper(HttpServletRequest request,
HttpServletResponse resp,
Message m) {
req = (Request)request;
message = m;
isNew = req.getAttribute(AbstractHTTPDestination.CXF_CONTINUATION_MESSAGE) == null;
if (isNew) {
req.setAttribute(AbstractHTTPDestination.CXF_CONTINUATION_MESSAGE,
message.getExchange().getInMessage());
context = req.startAsync(req, resp);
context.addContinuationListener(this);
req.setAttribute(AbstractHTTPDestination.CXF_ASYNC_CONTEXT, context);
} else {
context = (AsyncContext)req.getAttribute(AbstractHTTPDestination.CXF_ASYNC_CONTEXT);
}
}
public Object getObject() {
return obj;
}
public void setObject(Object userObject) {
obj = userObject;
}
public void resume() {
isResumed = true;
context.dispatch();
}
public boolean isNew() {
return isNew;
}
public boolean isPending() {
return isPending;
}
public boolean isResumed() {
return isResumed;
}
public void reset() {
context.complete();
obj = null;
}
public boolean suspend(long timeout) {
if (isPending) {
return false;
}
context.setTimeout(timeout);
isNew = false;
// Need to get the right message which is handled in the interceptor chain
message.getExchange().getInMessage().getInterceptorChain().suspend();
isPending = true;
return true;
}
protected Message getMessage() {
Message m = message;
if (m != null && m.getExchange().getInMessage() != null) {
m = m.getExchange().getInMessage();
}
return m;
}
public void onComplete(org.eclipse.jetty.continuation.Continuation continuation) {
getMessage().remove(AbstractHTTPDestination.CXF_CONTINUATION_MESSAGE);
isPending = false;
}
public void onTimeout(org.eclipse.jetty.continuation.Continuation continuation) {
isPending = false;
context.dispatch();
}
}