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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.core.runtime;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.LifeCycleListener;
import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
import org.apache.tuscany.sca.runtime.DomainRegistryFactory;
import org.apache.tuscany.sca.runtime.EndpointListener;
import org.apache.tuscany.sca.runtime.EndpointRegistry;
/**
* The utility responsible for finding the endpoint regstry by the scheme and creating instances for the
* given domain
*/
public class DefaultDomainRegistryFactory implements DomainRegistryFactory, LifeCycleListener {
private ExtensionPointRegistry extensionRegistry;
private Map<String, ServiceDeclaration> declarations = new HashMap<String, ServiceDeclaration>();
private Map<String, EndpointRegistry> endpointRegistries = new ConcurrentHashMap<String, EndpointRegistry>();
private List<EndpointListener> listeners = new ArrayList<EndpointListener>();
/**
* @param extensionRegistry
*/
public DefaultDomainRegistryFactory(ExtensionPointRegistry extensionRegistry) {
super();
this.extensionRegistry = extensionRegistry;
}
public void start() {
Collection<ServiceDeclaration> sds = null;
try {
sds = extensionRegistry.getServiceDiscovery().getServiceDeclarations(EndpointRegistry.class);
} catch (IOException e) {
throw new IllegalStateException(e);
}
for (ServiceDeclaration sd : sds) {
String scheme = sd.getAttributes().get("scheme");
if (scheme != null) {
scheme = scheme.toLowerCase();
}
declarations.put(scheme, sd);
}
}
public synchronized EndpointRegistry getEndpointRegistry(String endpointRegistryURI, String domainURI) {
if (endpointRegistryURI == null) {
endpointRegistryURI = "vm://localhost";
}
String key = endpointRegistryURI + "," + domainURI;
EndpointRegistry endpointRegistry = endpointRegistries.get(key);
if (endpointRegistry != null) {
return endpointRegistry;
}
URI uri = URI.create(endpointRegistryURI);
String scheme = uri.getScheme();
if (scheme != null) {
scheme = scheme.toLowerCase();
}
ServiceDeclaration sd = declarations.get(scheme);
try {
Class<?> implClass = sd.loadClass();
Constructor<?> constructor = null;
try {
constructor = implClass.getConstructor(ExtensionPointRegistry.class, String.class, String.class);
endpointRegistry =
(EndpointRegistry)constructor.newInstance(extensionRegistry, endpointRegistryURI, domainURI);
} catch (NoSuchMethodException e) {
constructor =
implClass.getConstructor(ExtensionPointRegistry.class, Map.class, String.class, String.class);
endpointRegistry =
(EndpointRegistry)constructor.newInstance(extensionRegistry,
sd.getAttributes(),
endpointRegistryURI,
domainURI);
}
} catch (Exception e) {
throw new IllegalStateException(e);
}
if (endpointRegistry instanceof LifeCycleListener) {
((LifeCycleListener)endpointRegistry).start();
}
for (EndpointListener listener : listeners) {
endpointRegistry.addListener(listener);
}
endpointRegistries.put(key, endpointRegistry);
return endpointRegistry;
}
public void stop() {
declarations.clear();
for (EndpointRegistry endpointRegistry : endpointRegistries.values()) {
if (endpointRegistry instanceof LifeCycleListener) {
((LifeCycleListener)endpointRegistry).stop();
}
}
endpointRegistries.clear();
listeners.clear();
}
public synchronized Collection<EndpointRegistry> getEndpointRegistries() {
return new ArrayList<EndpointRegistry>(endpointRegistries.values());
}
public synchronized void addListener(EndpointListener listener) {
listeners.add(listener);
for(EndpointRegistry registry: endpointRegistries.values()) {
registry.addListener(listener);
}
}
public synchronized List<EndpointListener> getListeners() {
return listeners;
}
public synchronized void removeListener(EndpointListener listener) {
listeners.remove(listener);
for(EndpointRegistry registry: endpointRegistries.values()) {
registry.removeListener(listener);
}
}
}
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