org.apache.cxf.transport.http_jetty.continuations.JettyContinuationWrapper Maven / Gradle / Ivy
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* 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.continuations.ContinuationCallback;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.PhaseInterceptorChain;
import org.apache.cxf.transport.http.AbstractHTTPDestination;
import org.eclipse.jetty.continuation.ContinuationListener;
import org.eclipse.jetty.continuation.ContinuationSupport;
public class JettyContinuationWrapper implements Continuation, ContinuationListener {
volatile boolean isNew;
volatile boolean isResumed;
volatile boolean isPending;
volatile long pendingTimeout;
volatile Object obj;
private Message message;
private org.eclipse.jetty.continuation.Continuation continuation;
private ContinuationCallback callback;
public JettyContinuationWrapper(HttpServletRequest request,
HttpServletResponse resp,
Message m) {
continuation = ContinuationSupport.getContinuation(request);
message = m;
isNew = request.getAttribute(AbstractHTTPDestination.CXF_CONTINUATION_MESSAGE) == null;
if (isNew) {
request.setAttribute(AbstractHTTPDestination.CXF_CONTINUATION_MESSAGE,
message.getExchange().getInMessage());
continuation.addContinuationListener(this);
callback = message.getExchange().get(ContinuationCallback.class);
}
}
public Object getObject() {
return obj;
}
public void setObject(Object userObject) {
obj = userObject;
}
public void resume() {
isResumed = true;
isPending = false;
continuation.resume();
}
public boolean isNew() {
return isNew;
}
public boolean isPending() {
return isPending;
}
public boolean isResumed() {
return isResumed;
}
public void reset() {
try {
continuation.complete();
} catch (Throwable ex) {
// explicit complete call does not seem to work
// with the non-Servlet3 Jetty Continuation
}
obj = null;
pendingTimeout = 0;
}
public boolean suspend(long timeout) {
if (isPending && timeout != 0) {
pendingTimeout += pendingTimeout + timeout;
} else {
pendingTimeout = timeout;
}
isNew = false;
if (PhaseInterceptorChain.getCurrentMessage() == null) {
// the current thread is different to the one which holds a lock on PhaseInterceptorChain
message.getExchange().put(Message.SUSPENDED_INVOCATION, true);
} else {
// Need to get the right message which is handled in the interceptor chain
message.getExchange().getInMessage().getInterceptorChain().suspend();
}
continuation.setTimeout(pendingTimeout);
if (!isPending) {
continuation.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 cont) {
getMessage().remove(AbstractHTTPDestination.CXF_CONTINUATION_MESSAGE);
isPending = false;
pendingTimeout = 0;
//REVISIT: isResumed = false;
if (callback != null) {
callback.onComplete();
}
}
public void onTimeout(org.eclipse.jetty.continuation.Continuation cont) {
isPending = false;
pendingTimeout = 0;
//isResumed = true;
}
}