/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* 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.apache.axis.ime.internal;
import org.apache.axis.AxisFault;
import org.apache.axis.MessageContext;
import org.apache.axis.components.logger.LogFactory;
import org.apache.axis.components.uuid.UUIDGenFactory;
import org.apache.axis.ime.MessageExchange;
import org.apache.axis.ime.MessageExchangeConstants;
import org.apache.axis.ime.MessageExchangeCorrelator;
import org.apache.axis.ime.MessageExchangeEvent;
import org.apache.axis.ime.MessageExchangeEventListener;
import org.apache.axis.ime.MessageExchangeLifecycle;
import org.apache.axis.ime.event.MessageFaultEvent;
import org.apache.axis.ime.event.MessageReceiveEvent;
import org.apache.commons.logging.Log;
import java.util.Hashtable;
/**
* @author James M Snell (jasnell@us.ibm.com)
* @author Ray Chun (rchun@sonicsoftware.com)
*/
public class MessageExchangeImpl
implements MessageExchange, MessageExchangeLifecycle {
protected static Log log =
LogFactory.getLog(MessageExchangeImpl.class.getName());
public static final long NO_TIMEOUT = -1;
public static final long DEFAULT_TIMEOUT = 1000 * 30;
private MessageExchangeEventListener eventListener;
private MessageExchangeProvider provider;
protected Holder holder;
public MessageExchangeImpl(
MessageExchangeProvider provider) {
}
/**
* @see org.apache.axis.ime.MessageExchange#send(MessageContext)
*/
public MessageExchangeCorrelator send(
MessageContext context)
throws AxisFault {
return send(context,null);
}
/**
* @see org.apache.axis.ime.MessageExchange#send(MessageContext)
*/
public MessageExchangeCorrelator send(
MessageContext context,
MessageExchangeEventListener listener)
throws AxisFault {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::send");
}
MessageExchangeCorrelator correlator =
(MessageExchangeCorrelator) context.getProperty(
MessageExchangeConstants.MESSAGE_CORRELATOR_PROPERTY);
if (correlator == null) {
correlator = new SimpleMessageExchangeCorrelator(
UUIDGenFactory.getUUIDGen().nextUUID());
context.setProperty(
MessageExchangeConstants.MESSAGE_CORRELATOR_PROPERTY,
correlator);
}
MessageExchangeSendContext sendContext =
MessageExchangeSendContext.newInstance(
correlator,
context,
listener);
if (listener != null) {
provider.processReceive(sendContext);
}
provider.processSend(sendContext);
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::send");
}
return correlator;
}
/**
* @see org.apache.axis.ime.MessageExchange#receive()
*/
public MessageContext receive()
throws AxisFault {
return receive(null,NO_TIMEOUT);
}
/**
* @see org.apache.axis.ime.MessageExchange#receive(long)
*/
public MessageContext receive(
long timeout)
throws AxisFault {
return receive(null,timeout);
}
/**
* @see org.apache.axis.ime.MessageExchange#receive(MessageExchangeCorrelator)
*/
public MessageContext receive(
MessageExchangeCorrelator correlator)
throws AxisFault {
return receive(correlator,NO_TIMEOUT);
}
/**
* @see org.apache.axis.ime.MessageExchange#receive(MessageExchangeCorrelator,long)
*/
public MessageContext receive(
MessageExchangeCorrelator correlator,
long timeout)
throws AxisFault {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::receive");
}
holder = new Holder();
MessageExchangeEventListener oldListener =
getMessageExchangeEventListener();
Listener listener = new Listener(holder);
setMessageExchangeEventListener(listener);
try {
this.receive(correlator,listener);
if (timeout != NO_TIMEOUT)
holder.waitForNotify(timeout);
else
holder.waitForNotify();
} catch (InterruptedException ie) {
throw AxisFault.makeFault(ie);
} finally {
setMessageExchangeEventListener(oldListener);
}
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::receive");
}
if (holder.context != null) {
return holder.context;
}
if (holder.exception != null) {
throw AxisFault.makeFault((Exception) holder.exception);
}
return null;
}
/**
* @see org.apache.axis.ime.MessageExchange#receive(MessageContextListener)
*/
public void receive(
MessageExchangeEventListener listener)
throws AxisFault {
receive(null,listener);
}
/**
* @see org.apache.axis.ime.MessageExchange#receive(MessageExchangeCorrelator,MessageContextListener)
*/
public void receive(
MessageExchangeCorrelator correlator,
MessageExchangeEventListener listener)
throws AxisFault {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::receive");
}
provider.processReceive(
MessageExchangeReceiveContext.newInstance(
correlator,
listener));
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::receive");
}
}
/**
* @see org.apache.axis.ime.MessageExchange#sendAndReceive(MessageContext)
*/
public MessageContext sendAndReceive(
MessageContext context)
throws AxisFault {
return sendAndReceive(context,NO_TIMEOUT);
}
/**
* @see org.apache.axis.ime.MessageExchange#sendAndReceive(MessageContext,long)
*/
public MessageContext sendAndReceive(
MessageContext context,
long timeout)
throws AxisFault {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::sendAndReceive");
}
holder = new Holder();
MessageExchangeEventListener oldListener =
getMessageExchangeEventListener();
Listener listener = new Listener(holder);
setMessageExchangeEventListener(listener);
try {
this.send(context,listener);
if (timeout != NO_TIMEOUT)
holder.waitForNotify(timeout);
else
holder.waitForNotify();
} catch (InterruptedException ie) {
throw AxisFault.makeFault(ie);
} finally {
setMessageExchangeEventListener(oldListener);
}
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::sendAndReceive");
}
if (holder.context != null) {
return holder.context;
}
if (holder.exception != null) {
throw AxisFault.makeFault((Exception) holder.exception);
}
return null;
}
/**
* see org.apache.axis.ime.MessageExchange#setMessageExchangeFaultListener(MessageExchangeFaultListener)
*/
public synchronized void setMessageExchangeEventListener(
MessageExchangeEventListener listener) {
this.eventListener = listener;
}
/**
* see org.apache.axis.ime.MessageExchange#getMessageExchangeStatusListener()
*/
public synchronized MessageExchangeEventListener getMessageExchangeEventListener() {
return this.eventListener;
}
/**
* Unsupported for now
* @see org.apache.axis.ime.MessageExchange@setOption(String,Object)
*/
public void setOption(
String OptionId,
Object OptionValue) {
provider.setOption(OptionId, OptionValue);
}
/**
* Unsupported for now
* @see org.apache.axis.ime.MessageExchange@getOption(String)
*/
public Object getOption(
String OptionId) {
return provider.getOption(OptionId);
}
/**
* Unsupported for now
* @see org.apache.axis.ime.MessageExchange@getOption(String,Object)
*/
public Object getOption(
String OptionId,
Object defaultValue) {
return provider.getOption(OptionId, defaultValue);
}
/**
* Unsupported for now
* @see org.apache.axis.ime.MessageExchange@getProperties()
*/
public Hashtable getOptions() {
return provider.getOptions();
}
/**
* Unsupported for now
* @see org.apache.axis.ime.MessageExchange@setProperties(java.lang.Hashtable)
*/
public void setOptions(Hashtable options) {
provider.setOptions(options);
}
/**
* Unsupported for now
* @see org.apache.axis.ime.MessageExchange@clearProperties()
*/
public void clearOptions() {
provider.clearOptions();
}
// -- Utility Classes --- //
private class Holder {
private MessageExchangeCorrelator correlator;
private MessageContext context;
private Throwable exception;
private boolean done = false;
public synchronized void set(
MessageExchangeCorrelator correlator,
MessageContext context) {
this.correlator = correlator;
this.context = context;
done = true;
notifyAll();
}
public synchronized void set(
MessageExchangeCorrelator correlator,
Throwable throwable) {
this.correlator = correlator;
this.exception = throwable;
done = true;
notifyAll();
}
public synchronized void waitForNotify()
throws InterruptedException {
if (!done) wait();
return;
}
public synchronized void waitForNotify(long timeout)
throws InterruptedException {
if (!done) wait(timeout);
return;
}
}
public class Listener
implements MessageExchangeEventListener {
protected Holder holder;
public Listener(Holder holder) {
this.holder = holder;
}
/**
* @see org.apache.axis.ime.MessageExchangeReceiveListener#onReceive(MessageExchangeCorrelator, MessageContext)
*/
public void onEvent(
MessageExchangeEvent event) {
if (event instanceof MessageReceiveEvent) {
MessageReceiveEvent receiveEvent = (MessageReceiveEvent)event;
holder.set(
receiveEvent.getMessageExchangeCorrelator(),
receiveEvent.getMessageContext());
}
else if (event instanceof MessageFaultEvent) {
MessageFaultEvent faultEvent = (MessageFaultEvent)event;
holder.set(faultEvent.getMessageExchangeCorrelator(), faultEvent.getException());
}
}
}
// -- MessageExchangeLifecycle Implementation --- //
/**
* @see org.apache.axis.ime.MessageExchangeLifecycle#awaitShutdown()
*/
public void awaitShutdown()
throws InterruptedException {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::awaitShutdown");
}
provider.awaitShutdown();
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::awaitShutdown");
}
}
/**
* @see org.apache.axis.ime.MessageExchangeLifecycle#cleanup()
*/
public void cleanup()
throws InterruptedException {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::cleanup");
}
provider.cleanup();
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::cleanup");
}
}
/**
* @see org.apache.axis.ime.MessageExchangeLifecycle#awaitShutdown(long)
*/
public void awaitShutdown(long timeout)
throws InterruptedException {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::awaitShutdown");
}
provider.awaitShutdown(timeout);
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::awaitShutdown");
}
}
/**
* @see org.apache.axis.ime.MessageExchangeLifecycle#init()
*/
public void init() {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::init");
}
provider.init();
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::init");
}
}
/**
* @see org.apache.axis.ime.MessageExchangeLifecycle#shutdown()
*/
public void shutdown() {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::shutdown");
}
provider.shutdown();
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::shutdown");
}
}
/**
* @see org.apache.axis.ime.MessageExchangeLifecycle#shutdown(boolean)
*/
public void shutdown(boolean force) {
if (log.isDebugEnabled()) {
log.debug("Enter: MessageExchangeImpl::shutdown");
}
provider.shutdown(force);
if (log.isDebugEnabled()) {
log.debug("Exit: MessageExchangeImpl::shutdown");
}
}
}