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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.sca.policy.security.http.extensibility;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
import org.apache.tuscany.sca.monitor.Monitor;
import org.apache.tuscany.sca.monitor.MonitorFactory;
import org.apache.tuscany.sca.monitor.Problem;
import org.apache.tuscany.sca.monitor.Problem.Severity;
/**
* Default Extension point for LDAP Security Handlers
*
* @version $Rev$ $Date$
*/
public class DefaultLDAPSecurityExtensionPoint implements LDAPSecurityHandlerExtensionPoint {
private List<LDAPSecurityHandler> securityHandlers = new ArrayList<LDAPSecurityHandler>();
private ExtensionPointRegistry extensionPoints;
private Monitor monitor = null;
private boolean loaded = false;
public DefaultLDAPSecurityExtensionPoint(ExtensionPointRegistry extensionPoints) {
this.extensionPoints = extensionPoints;
UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
MonitorFactory monitorFactory = utilities.getUtility(MonitorFactory.class);
if (monitorFactory != null) {
this.monitor = monitorFactory.createMonitor();
}
}
public void addLDAPSecurityHandler(LDAPSecurityHandler securityHandler) {
securityHandlers.add(securityHandler);
}
public void removeLDAPSecurityHandler(LDAPSecurityHandler securityHandler) {
securityHandlers.remove(securityHandler);
}
public List<LDAPSecurityHandler> getLDAPSecurityHandlers() {
loadHandlers();
return securityHandlers;
}
/**
* Private Utility methods
*/
/**
* Report a exception.
*
* @param problems
* @param message
* @param model
*/
private void error(String message, Object model, Exception ex) {
if (monitor != null) {
Problem problem = new ProblemImpl(this.getClass().getName(), null, Severity.ERROR, model, message, ex);
monitor.problem(problem);
}
}
/**
* Lazily load artifact processors registered in the extension point.
*/
@SuppressWarnings("unchecked")
private synchronized void loadHandlers() {
if (loaded) {
return;
}
// Get the proxy factories declarations
Set<ServiceDeclaration> handlerDeclarations = null;
try {
handlerDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(LDAPSecurityHandler.class);
} catch (IOException e) {
IllegalStateException ie = new IllegalStateException(e);
error("IllegalStateException", handlerDeclarations, ie);
throw ie;
}
for (ServiceDeclaration processorDeclaration : handlerDeclarations) {
// Create a factory, and register it
LDAPSecurityHandler securityHandler = null;
try {
Class<LDAPSecurityHandler> securityHandlerClass = (Class<LDAPSecurityHandler>) processorDeclaration.loadClass();
securityHandler = securityHandlerClass.newInstance();
} catch (Exception e) {
IllegalStateException ie = new IllegalStateException(e);
error("IllegalStateException", securityHandler, ie);
throw ie;
}
addLDAPSecurityHandler(securityHandler);
}
loaded = true;
}
}
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