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/*******************************************************************************
* Copyright (c) 2014 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.jaxrs.server.internal.applications;
import java.util.Iterator;
import java.util.concurrent.ConcurrentHashMap;
import javax.ws.rs.core.Application;
import org.eclipse.osee.authorization.admin.AuthorizationAdmin;
import org.eclipse.osee.jaxrs.server.internal.JaxRsConfiguration;
import org.eclipse.osee.jaxrs.server.internal.JaxRsConstants;
import org.eclipse.osee.jaxrs.server.internal.JaxRsVisitable;
import org.eclipse.osee.jaxrs.server.internal.JaxRsVisitor;
import org.eclipse.osee.jaxrs.server.internal.ext.JerseyJaxRsFactory;
import org.eclipse.osee.jaxrs.server.internal.filters.SecurityContextFilter;
import org.eclipse.osee.jaxrs.server.internal.filters.SecurityContextProviderImpl;
import org.eclipse.osee.logger.Log;
import org.osgi.framework.Bundle;
import org.osgi.service.http.HttpService;
/**
* @author Roberto E. Escobar
*/
public class JaxRsApplicationRegistry implements JaxRsVisitable {
public static interface JaxRsContainerProvider {
JaxRsContainer get();
JaxRsContainer unSet();
boolean hasContainer();
}
public static interface JaxRsContainer {
String getServletContext();
void setServletContext(String contextName);
void addApplication(String componentName, String applicationContext, Bundle bundle, Application application);
void removeApplication(String componentName);
boolean isEmpty();
void start();
void stop();
void accept(JaxRsVisitor visitor);
}
private final ConcurrentHashMap<String, JaxRsContainerProvider> servlets =
new ConcurrentHashMap<String, JaxRsContainerProvider>();
private Log logger;
private HttpService httpService;
private AuthorizationAdmin authorizationAdmin;
private JaxRsFactory factory;
private String baseContext = JaxRsConstants.DEFAULT_JAXRS_BASE_CONTEXT;
public void setHttpService(HttpService httpService) {
this.httpService = httpService;
}
public void setLogger(Log logger) {
this.logger = logger;
}
public void setAuthorizationAdmin(AuthorizationAdmin authorizationAdmin) {
this.authorizationAdmin = authorizationAdmin;
}
public void start() {
logger.trace("Starting [%s]...", getClass().getSimpleName());
SecurityContextProviderImpl provider = new SecurityContextProviderImpl(logger, authorizationAdmin);
SecurityContextFilter filter = new SecurityContextFilter(provider);
factory = new JerseyJaxRsFactory(logger, httpService, filter);
}
public void stop() {
logger.trace("Stopping [%s]...", getClass().getSimpleName());
this.factory = null;
}
public String getBaseContext() {
return baseContext;
}
public synchronized void configure(JaxRsConfiguration config) {
logger.trace("Configuring [%s]...", getClass().getSimpleName());
final String oldBaseContext = baseContext;
final String newBaseContext = config.getBaseContext();
if (!oldBaseContext.equals(newBaseContext)) {
logger.trace("Configuration Changed for [%s] - [%s]", getClass().getSimpleName(), config);
baseContext = newBaseContext;
JaxRsContainerProvider removed = servlets.remove(oldBaseContext);
if (removed != null) {
if (removed.hasContainer()) {
JaxRsContainer container = removed.get();
container.stop();
container.accept(new JaxRsVisitor() {
@Override
public void onApplication(String applicationContext, String componentName, Bundle bundle, Application application) {
final String contextName = getBaseContext();
JaxRsContainer newContainer = getContainerInitIfNull(contextName);
newContainer.addApplication(componentName, applicationContext, bundle, application);
}
});
}
}
}
}
public void register(String componentName, String contextName, Bundle bundle, Application application) {
final String baseContext = getBaseContext();
JaxRsContainer container = getContainerInitIfNull(baseContext);
container.addApplication(componentName, contextName, bundle, application);
}
public void deregister(String componentName) {
final String contextName = getBaseContext();
JaxRsContainer container = getContainerOrNull(contextName);
if (container != null) {
container.removeApplication(componentName);
if (container.isEmpty()) {
servlets.remove(contextName);
}
}
}
public void deregisterAll() {
Iterator<JaxRsContainerProvider> iterator = servlets.values().iterator();
while (iterator.hasNext()) {
JaxRsContainer container = iterator.next().get();
if (container != null) {
container.stop();
}
iterator.remove();
}
}
@Override
public void accept(JaxRsVisitor visitor) {
visitor.onStartRegistry();
try {
for (JaxRsContainerProvider provider : servlets.values()) {
if (provider.hasContainer()) {
JaxRsContainer container = provider.get();
container.accept(visitor);
}
}
} finally {
visitor.onEndRegistry();
}
}
private JaxRsContainer getContainerOrNull(String contextName) {
JaxRsContainer toReturn = null;
JaxRsContainerProvider reference = servlets.get(contextName);
if (reference != null) {
toReturn = reference.get();
}
return toReturn;
}
private JaxRsContainer getContainerInitIfNull(String contextName) {
JaxRsContainerProvider reference = servlets.get(contextName);
if (reference == null) {
JaxRsContainerProvider newContainer = factory.newJaxRsContainerProvider(contextName);
reference = servlets.putIfAbsent(contextName, newContainer);
if (reference == null) {
reference = newContainer;
}
}
return reference.get();
}
}
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