/*
* Copyright 2004,2005 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.axis2.client;
import org.apache.axis2.AxisFault;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.description.TransportInDescription;
import org.apache.axis2.i18n.Messages;
import org.apache.axis2.transport.TransportListener;
import javax.xml.namespace.QName;
import java.io.IOException;
import java.net.ServerSocket;
import java.util.HashMap;
import java.util.Map;
/**
* This class manages the listeners and depends heavily on static constructs and should be
* re-architectured. It allows the client to initialize only one ConfigurationContext in a given JVM.
*/
public class ListenerManager {
public static int port = 6059;
public static Map configurationContextMap = new HashMap();
/**
* Starts a listener for a given transport if it has not already started.
*
* @param transport
* @param configurationContext
* @throws AxisFault
*/
public static synchronized final void makeSureStarted(String transport,
ConfigurationContext configurationContext)
throws AxisFault {
// If this config context is in the map, that means we already have a listener for that
// config context
HashMap listeners = (HashMap) configurationContextMap.get(configurationContext);
if (listeners == null) {
listeners = new HashMap();
configurationContextMap.put(configurationContext, listeners);
} else {
TransportListenerState tsState = (TransportListenerState) listeners.get(transport);
if (tsState != null) {
tsState.waitingCalls++;
return;
}
}
//means this transport not yet started, start the transport
TransportInDescription tranportIn =
configurationContext.getAxisConfiguration().getTransportIn(
new QName(transport));
TransportListener listener = tranportIn.getReceiver();
listener.start();
TransportListenerState tsState = new TransportListenerState(listener);
listeners.put(transport, tsState);
tsState.waitingCalls++;
}
public static synchronized final void stop(ConfigurationContext configurationContext, String transport) throws AxisFault {
HashMap listeners = (HashMap) configurationContextMap.get(configurationContext);
if (listeners != null) {
TransportListenerState tsState = (TransportListenerState) listeners.get(transport);
if (tsState != null) {
tsState.waitingCalls--;
if (tsState.waitingCalls == 0) {
tsState.listener.stop();
listeners.remove(transport);
}
}
}
}
/**
* Returns the replyTo endpoint reference for the servicename/transport combination.
*
* @param serviceName
* @param transport
* @return endpoint reference
* @throws AxisFault
*/
public static EndpointReference replyToEPR(ConfigurationContext configurationContext,
String serviceName,
String transport)
throws AxisFault {
HashMap listeners = (HashMap) configurationContextMap.get(configurationContext);
if (listeners != null) {
TransportListenerState tsState = (TransportListenerState) listeners.get(
transport);
if (tsState != null) {
return tsState.listener.getReplyToEPR(serviceName);
} else {
throw new AxisFault(Messages.getMessage("replyNeedStarting", transport));
}
} else {
throw new AxisFault("Can not find listeners for " + transport + " for the given config" +
" context " + configurationContext + ". So can not provide a replyTo epr here. ");
}
}
/**
* This class keeps information about the listener for a given transport.
*/
public static class TransportListenerState {
public TransportListenerState(TransportListener listener) {
this.listener = listener;
}
public int waitingCalls = 0;
public TransportListener listener;
}
/**
* Controls the number of server sockets kept open.
*/
public static ServerSocket openSocket(int port) throws AxisFault {
for (int i = 0; i < 5; i++) {
try {
return new ServerSocket(port + i);
} catch (IOException e) {
// What I'm gonna do here. Try again.
}
}
throw new AxisFault(Messages.getMessage("failedToOpenSocket"));
}
}