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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.tuscany.runtime.webapp;
import java.net.URI;
import java.net.URL;
import java.util.Collection;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSessionEvent;
import org.apache.tuscany.core.runtime.AbstractRuntime;
import org.apache.tuscany.host.runtime.InitializationException;
import org.apache.tuscany.host.servlet.ServletRequestInjector;
import org.apache.tuscany.runtime.webapp.implementation.webapp.WebappComponent;
import org.apache.tuscany.spi.builder.BuilderException;
import org.apache.tuscany.spi.component.Component;
import org.apache.tuscany.spi.component.ComponentException;
import org.apache.tuscany.spi.component.ScopeRegistry;
import org.apache.tuscany.spi.component.ScopeContainer;
import org.apache.tuscany.spi.component.GroupInitializationException;
import org.apache.tuscany.spi.loader.LoaderException;
import org.apache.tuscany.spi.model.ComponentDefinition;
import org.apache.tuscany.spi.model.CompositeImplementation;
import org.apache.tuscany.spi.model.Scope;
import org.apache.tuscany.spi.resolver.ResolutionException;
/**
* Bootstrapper for the Tuscany runtime in a web application host. This listener manages one runtime per servlet
* context; the lifecycle of that runtime corresponds to the the lifecycle of the associated servlet context.
* <p/>
* The bootstrapper launches the runtime, booting system extensions and applications, according to the servlet
* parameters defined in {@link Constants}. When the runtime is instantiated, it is placed in the servlet context with
* the attribute {@link Constants#RUNTIME_PARAM}. The runtime implements {@link WebappRuntime} so that filters and
* servlets loaded in the parent web app classloader may pass events and requests to it.
* <p/>
*
* @version $$Rev$$ $$Date$$
*/
public class WebappRuntimeImpl extends AbstractRuntime<WebappRuntimeInfo> implements WebappRuntime {
private ServletContext servletContext;
private ServletRequestInjector requestInjector;
public WebappRuntimeImpl() {
super(WebappRuntimeInfo.class);
}
public ServletContext getServletContext() {
return servletContext;
}
public void setServletContext(ServletContext servletContext) {
this.servletContext = servletContext;
}
/*
public void initialize() throws InitializationException {
super.initialize();
try {
SCAObject host = getTuscanySystem().getSystemChild("servletHost");
if (!(host instanceof AtomicComponent)) {
throw new InitializationException("Servlet host must be an atomic component");
}
requestInjector = (ServletRequestInjector) ((AtomicComponent) host).getTargetInstance();
if (getApplicationScdl() == null) {
throw new TuscanyInitException("Could not find application SCDL");
}
getRuntime().getRootComponent().start();
application = deployApplicationScdl(getDeployer(),
getRuntime().getRootComponent(),
getApplicationName(),
getApplicationScdl(),
getHostClassLoader());
application.start();
CompositeComponent current = application;
String path = servletContext.getInitParameter(Constants.CURRENT_COMPOSITE_PATH_PARAM);
if (path != null) {
StringTokenizer tokenizer = new StringTokenizer(path, "/");
while (tokenizer.hasMoreTokens()) {
SCAObject o = current.getChild(tokenizer.nextToken());
if (!(o instanceof CompositeComponent)) {
throw new ServletLauncherInitException("Invalid context path", path);
}
current = (CompositeComponent) o;
}
}
context = new CompositeContextImpl(current, getWireService());
servletContext.setAttribute(Constants.CONTEXT_ATTRIBUTE, context);
} catch (Exception e) {
throw new ServletLauncherInitException(e);
}
}
*/
@Deprecated
public void deploy(URI compositeId, URL applicationScdl, URI componentId) throws InitializationException {
CompositeImplementation impl = new CompositeImplementation();
impl.setScdlLocation(applicationScdl);
impl.setClassLoader(getHostClassLoader());
ComponentDefinition<CompositeImplementation> definition =
new ComponentDefinition<CompositeImplementation>(compositeId, impl);
Collection<Component> components;
try {
components = getDeployer().deploy(null, definition);
} catch (LoaderException e) {
throw new InitializationException(e);
} catch (BuilderException e) {
throw new InitializationException(e);
} catch (ComponentException e) {
throw new InitializationException(e);
} catch (ResolutionException e) {
throw new InitializationException(e);
}
for (Component component : components) {
component.start();
}
try {
ScopeRegistry scopeRegistry = getScopeRegistry();
ScopeContainer<URI> container = scopeRegistry.getScopeContainer(Scope.COMPOSITE);
container.startContext(compositeId, compositeId);
getWorkContext().setIdentifier(Scope.COMPOSITE, compositeId);
} catch (GroupInitializationException e) {
throw new InitializationException(e);
}
componentId = URI.create(compositeId.toString()+'/').resolve(componentId);
Component component = getComponentManager().getComponent(componentId);
if (component == null) {
throw new TuscanyInitException("No component found with id " + componentId, componentId.toString());
}
if (component instanceof WebappComponent) {
WebappComponent webapp = (WebappComponent) component;
webapp.bind(getServletContext());
}
}
public ServletRequestInjector getRequestInjector() {
return requestInjector;
}
public void sessionCreated(HttpSessionEvent event) {
/*
HttpSessionStart startSession = new HttpSessionStart(this, event.getSession().getId());
application.publish(startSession);
((EventPublisher) requestInjector).publish(startSession);
*/
}
public void sessionDestroyed(HttpSessionEvent event) {
/*
HttpSessionEnd endSession = new HttpSessionEnd(this, event.getSession().getId());
application.publish(endSession);
((EventPublisher) requestInjector).publish(endSession);
*/
}
public void httpRequestStarted(HttpServletRequest request) {
/*
HttpSession session = request.getSession(false);
Object sessionId = session == null ? new LazyHTTPSessionId(request) : session.getId();
HttpRequestStart httpRequestStart = new HttpRequestStart(this, sessionId);
application.publish(httpRequestStart);
((EventPublisher) requestInjector).publish(httpRequestStart);
*/
}
public void httpRequestEnded(Object sessionid) {
/*
HttpRequestEnded httpRequestEnded = new HttpRequestEnded(this, sessionid);
application.publish(httpRequestEnded);
((EventPublisher) requestInjector).publish(httpRequestEnded);
*/
}
public void startRequest() {
/*
application.publish(new RequestStart(this));
*/
}
public void stopRequest() {
/*
application.publish(new RequestEnd(this));
*/
}
}
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