/*
* Copyright 2008-2014 the original author or authors
*
* Licensed 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.kaleidofoundry.messaging;
import static org.kaleidofoundry.messaging.TransportContextBuilder.TRANSPORT_PROVIDER;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.Set;
import org.kaleidofoundry.core.context.AbstractProviderService;
import org.kaleidofoundry.core.context.ProviderException;
import org.kaleidofoundry.core.context.RuntimeContext;
import org.kaleidofoundry.core.plugin.Declare;
import org.kaleidofoundry.core.plugin.PluginFactory;
import org.kaleidofoundry.core.plugin.model.Plugin;
import org.kaleidofoundry.core.util.ObjectHelper;
import org.kaleidofoundry.core.util.Registry;
import org.kaleidofoundry.messaging.jms.JmsTransport;
/**
* @author jraduget
*/
public class TransportProvider extends AbstractProviderService<Transport> {
static final Registry<String, Transport> REGISTRY = new Registry<String, Transport>();
public TransportProvider(Class<Transport> genericClassInterface) {
super(genericClassInterface);
}
@Override
protected Registry<String, Transport> getRegistry() {
return REGISTRY;
}
public Transport provides(String name) {
return _provides(null, name, null);
}
public Transport provides(String providerCode, String name) {
return _provides(providerCode, name, null);
}
public Transport provides(String name, RuntimeContext<?> context) {
Transport transport = getRegistry().get(name);
if (transport != null) {
return transport;
} else {
return provides(new RuntimeContext<Transport>(name, Transport.class, context));
}
}
@Override
protected Transport _provides(RuntimeContext<Transport> context) throws ProviderException {
String providerCode = context.getString(TRANSPORT_PROVIDER);
return _provides(providerCode, context.getName(), context);
}
protected Transport _provides(String providerCode, String name, RuntimeContext<Transport> context) throws ProviderException {
String type = ObjectHelper.firstNonNull(providerCode, context.getString(TRANSPORT_PROVIDER, TransportProviderEnum.jms.getCode())).toLowerCase();
// only for optimization reasons
if (type.equalsIgnoreCase(TransportProviderEnum.jms.name())) {
try {
return new JmsTransport(context);
} catch (TransportException te) {
throw new ProviderException(te);
}
}
// dynamic lookup into register plugin
final Set<Plugin<Transport>> pluginImpls = PluginFactory.getImplementationRegistry().findByInterface(Transport.class);
// scan each @Declare file store implementation, to get one which handle the given implementation code
for (final Plugin<Transport> pi : pluginImpls) {
final Class<? extends Transport> impl = pi.getAnnotatedClass();
try {
final Declare declarePlugin = impl.getAnnotation(Declare.class);
if (declarePlugin.value().endsWith(type)) {
final Constructor<? extends Transport> constructor = impl.getConstructor(RuntimeContext.class);
return constructor.newInstance(context);
}
} catch (final NoSuchMethodException e) {
throw new ProviderException("context.provider.error.NoSuchConstructorException", impl.getName(), "RuntimeContext<Transport> context");
} catch (final InstantiationException e) {
throw new ProviderException("context.provider.error.InstantiationException", impl.getName(), e.getMessage());
} catch (final IllegalAccessException e) {
throw new ProviderException("context.provider.error.IllegalAccessException", impl.getName(), "RuntimeContext<Transport> context");
} catch (final InvocationTargetException e) {
throw new ProviderException("context.provider.error.InvocationTargetException", e.getCause(), impl.getName(), "RuntimeContext<Transport> context",
e.getCause().getClass().getName(), e.getMessage());
}
}
throw new ProviderException(new TransportException("messaging.transport.provider.illegal", providerCode));
}
/**
* Close all transport with the associated consumers / producers
*
* @throws TransportException
*/
public void closeAll() throws TransportException {
for (Transport transport : REGISTRY.values()) {
transport.close();
}
}
}