/**
* 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.websocket;
import java.io.IOException;
import java.lang.reflect.Constructor;
import org.apache.cxf.Bus;
import org.apache.cxf.common.injection.NoJSR250Annotations;
import org.apache.cxf.common.util.SystemPropertyAction;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.transport.DestinationFactory;
import org.apache.cxf.transport.DestinationFactoryManager;
import org.apache.cxf.transport.http.AbstractHTTPDestination;
import org.apache.cxf.transport.http.DestinationRegistry;
import org.apache.cxf.transport.http.HTTPTransportFactory;
import org.apache.cxf.transport.http.HttpDestinationFactory;
import org.apache.cxf.transport.http_jetty.JettyHTTPServerEngineFactory;
import org.apache.cxf.transport.http_undertow.UndertowHTTPServerEngineFactory;
import org.apache.cxf.transport.websocket.atmosphere.AtmosphereWebSocketServletDestination;
//import org.apache.cxf.transport.websocket.jetty.JettyWebSocketServletDestination;
@NoJSR250Annotations()
public class WebSocketDestinationFactory implements HttpDestinationFactory {
private static final boolean ATMOSPHERE_AVAILABLE = probeClass("org.atmosphere.cpr.ApplicationConfig");
private static final boolean JETTY_AVAILABLE = probeClass("org.eclipse.jetty.server.Server");
private static final boolean UNDERTOW_AVAILABLE = probeClass("io.undertow.websockets.core.WebSockets");
private static final Constructor<?> JETTY9_WEBSOCKET_DESTINATION_CTR =
probeConstructor("org.apache.cxf.transport.websocket.jetty9.Jetty9WebSocketDestination");
private static final Constructor<?> UNDERTOW_WEBSOCKET_DESTINATION_CTR =
probeUndertowConstructor("org.apache.cxf.transport.websocket.undertow.UndertowWebSocketDestination");
private static final Constructor<?> ATMOSPHERE_WEBSOCKET_JETTY_DESTINATION_CTR =
probeConstructor("org.apache.cxf.transport.websocket.atmosphere.AtmosphereWebSocketJettyDestination");
private static final Constructor<?> ATMOSPHERE_WEBSOCKET_UNDERTOW_DESTINATION_CTR =
probeUndertowConstructor(
"org.apache.cxf.transport.websocket.atmosphere.AtmosphereWebSocketUndertowDestination");
private final boolean atmosphereDisabled = Boolean.valueOf(SystemPropertyAction
.getPropertyOrNull("org.apache.cxf.transport.websocket.atmosphere.disabled"));
private static boolean probeClass(String name) {
try {
Class.forName(name, true, WebSocketDestinationFactory.class.getClassLoader());
return true;
} catch (Throwable t) {
return false;
}
}
private static Constructor<?> probeConstructor(String name) {
try {
Class<?> clz = Class.forName(name, true, WebSocketDestinationFactory.class.getClassLoader());
return clz.getConstructor(Bus.class, DestinationRegistry.class, EndpointInfo.class,
JettyHTTPServerEngineFactory.class);
} catch (Throwable t) {
return null;
}
}
private static Constructor<?> probeUndertowConstructor(String name) {
try {
Class<?> clz = Class.forName(name, true, WebSocketDestinationFactory.class.getClassLoader());
return clz.getConstructor(Bus.class, DestinationRegistry.class, EndpointInfo.class,
UndertowHTTPServerEngineFactory.class);
} catch (Throwable t) {
return null;
}
}
public AbstractHTTPDestination createDestination(EndpointInfo endpointInfo, Bus bus,
DestinationRegistry registry) throws IOException {
if (endpointInfo.getAddress().startsWith("ws")) {
if (ATMOSPHERE_AVAILABLE && !atmosphereDisabled) {
// use atmosphere if available
if (JETTY_AVAILABLE) {
// for the embedded mode, we stick to jetty
JettyHTTPServerEngineFactory serverEngineFactory = bus
.getExtension(JettyHTTPServerEngineFactory.class);
return createJettyHTTPDestination(ATMOSPHERE_WEBSOCKET_JETTY_DESTINATION_CTR, bus,
registry, endpointInfo, serverEngineFactory);
} else if (UNDERTOW_AVAILABLE) {
// use AtmosphereWebSocketUndertowDestination
UndertowHTTPServerEngineFactory undertowServerEngineFactory = bus
.getExtension(UndertowHTTPServerEngineFactory.class);
return createUndertowHTTPDestination(ATMOSPHERE_WEBSOCKET_UNDERTOW_DESTINATION_CTR, bus,
registry, endpointInfo, undertowServerEngineFactory);
}
return null;
} else {
if (JETTY_AVAILABLE) {
// for the embedded mode, we stick to jetty if jetty is available
JettyHTTPServerEngineFactory serverEngineFactory = bus
.getExtension(JettyHTTPServerEngineFactory.class);
return createJettyHTTPDestination(JETTY9_WEBSOCKET_DESTINATION_CTR, bus, registry,
endpointInfo, serverEngineFactory);
} else if (UNDERTOW_AVAILABLE) {
// use UndertowWebSocketDestination
UndertowHTTPServerEngineFactory undertowServerEngineFactory = bus
.getExtension(UndertowHTTPServerEngineFactory.class);
return createUndertowHTTPDestination(UNDERTOW_WEBSOCKET_DESTINATION_CTR, bus,
registry, endpointInfo, undertowServerEngineFactory);
}
return null;
}
} else {
// REVISIT other way of getting the registry of http so that the plain cxf servlet finds the
// destination?
registry = getDestinationRegistry(bus);
// choose atmosphere if available, otherwise assume jetty is available
if (ATMOSPHERE_AVAILABLE && !atmosphereDisabled) {
// use atmosphere if available
return new AtmosphereWebSocketServletDestination(bus, registry, endpointInfo,
endpointInfo.getAddress());
} else {
// use jetty-websocket
return createJettyHTTPDestination(JETTY9_WEBSOCKET_DESTINATION_CTR, bus, registry,
endpointInfo, null);
}
}
}
private static DestinationRegistry getDestinationRegistry(Bus bus) {
DestinationFactoryManager dfm = bus.getExtension(DestinationFactoryManager.class);
try {
DestinationFactory df = dfm
.getDestinationFactory("http://cxf.apache.org/transports/http/configuration");
if (df instanceof HTTPTransportFactory) {
HTTPTransportFactory transportFactory = (HTTPTransportFactory)df;
return transportFactory.getRegistry();
}
} catch (Exception e) {
// why are we throwing a busexception if the DF isn't found?
}
return null;
}
private AbstractHTTPDestination createJettyHTTPDestination(Constructor<?> ctr, Bus bus,
DestinationRegistry registry, EndpointInfo ei,
JettyHTTPServerEngineFactory jhsef)
throws IOException {
if (ctr != null) {
try {
return (AbstractHTTPDestination)ctr.newInstance(bus, registry, ei, jhsef);
} catch (Throwable t) {
// log
t.printStackTrace();
}
}
return null;
}
private AbstractHTTPDestination createUndertowHTTPDestination(Constructor<?> ctr, Bus bus,
DestinationRegistry registry,
EndpointInfo ei,
UndertowHTTPServerEngineFactory jhsef)
throws IOException {
if (ctr != null) {
try {
return (AbstractHTTPDestination)ctr.newInstance(bus, registry, ei, jhsef);
} catch (Throwable t) {
// log
t.printStackTrace();
}
}
return null;
}
}