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JavaxWebSocketShutdownContainer.java
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JavaxWebSocketShutdownContainer.java
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//
// ========================================================================
// Copyright (c) 1995-2021 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.websocket.javax.client;
import java.util.Set;
import javax.servlet.ServletContainerInitializer;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletException;
import org.eclipse.jetty.util.component.ContainerLifeCycle;
import org.eclipse.jetty.util.component.LifeCycle;
import org.eclipse.jetty.websocket.javax.client.internal.JavaxWebSocketClientContainer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* <p>This manages the LifeCycle of {@link javax.websocket.WebSocketContainer} instances that are created with
* {@link javax.websocket.ContainerProvider}, if this code is being run from another ServletContainer, or if run inside a
* Jetty Server with the WebSocket client classes provided by the webapp.</p>
*
* <p>This mechanism will not work if run with embedded Jetty or if the WebSocket client classes are provided by the server.
* In this case then the client {@link javax.websocket.WebSocketContainer} will register itself to be automatically shutdown
* with the Jetty {@code ContextHandler}.</p>
*/
public class JavaxWebSocketShutdownContainer extends ContainerLifeCycle implements ServletContainerInitializer, ServletContextListener
{
private static final Logger LOG = LoggerFactory.getLogger(JavaxWebSocketShutdownContainer.class);
@Override
public void onStartup(Set<Class<?>> c, ServletContext ctx) throws ServletException
{
JavaxWebSocketClientContainer.setShutdownContainer(this);
ctx.addListener(this);
}
@Override
public void contextInitialized(ServletContextEvent sce)
{
if (LOG.isDebugEnabled())
LOG.debug("contextInitialized({}) {}", sce, this);
LifeCycle.start(this);
}
@Override
public void contextDestroyed(ServletContextEvent sce)
{
if (LOG.isDebugEnabled())
LOG.debug("contextDestroyed({}) {}", sce, this);
LifeCycle.stop(this);
removeBeans();
JavaxWebSocketClientContainer.setShutdownContainer(null);
}
@Override
public String toString()
{
return String.format("%s@%x{%s, size=%s}", getClass().getSimpleName(), hashCode(), getState(), getBeans().size());
}
}