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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.binding.sca.impl;
import java.net.URI;
import org.apache.tuscany.sca.assembly.SCABinding;
import org.apache.tuscany.sca.binding.sca.DistributedSCABinding;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.provider.BindingProviderFactory;
import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint;
import org.apache.tuscany.sca.provider.ServiceBindingProvider;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentService;
/**
* The sca service binding provider mediates between the twin requirements of
* local sca bindings and remote sca bindings. In the local case is does
* very little. When the sca binding model is set as being remote this binding will
* try and create a remote service endpoint for remote references to connect to
*
* @version $Rev$ $Date$
*/
public class RuntimeSCAServiceBindingProvider implements ServiceBindingProvider {
private RuntimeComponentService service;
private BindingProviderFactory<DistributedSCABinding> distributedProviderFactory;
private ServiceBindingProvider distributedProvider;
private DistributedSCABinding distributedBinding;
public RuntimeSCAServiceBindingProvider(ExtensionPointRegistry extensionPoints,
RuntimeComponent component,
RuntimeComponentService service,
SCABinding binding) {
this.service = service;
// if there is potentially a wire to this service that crosses the node boundary
if (service.getInterfaceContract().getInterface().isRemotable()) {
// look to see if a distributed SCA binding implementation has
// been included on the classpath. This will be needed by the
// provider itself to do it's thing
ProviderFactoryExtensionPoint factoryExtensionPoint =
extensionPoints.getExtensionPoint(ProviderFactoryExtensionPoint.class);
distributedProviderFactory =
(BindingProviderFactory<DistributedSCABinding>)factoryExtensionPoint
.getProviderFactory(DistributedSCABinding.class);
// Check the things that will generally be required to set up a
// distributed sca domain reference provider. I.e. make sure that we have a
// - distributed implementation of the sca binding available
// - remotable interface on the service
if (distributedProviderFactory != null) {
URI serviceURI = null;
try {
serviceURI = new URI(binding.getURI());
} catch(Exception ex) {
}
if (RemoteBindingHelper.isTargetRemote() || ((serviceURI != null) && (serviceURI.isAbsolute()))) {
// create a nested provider to handle the remote case
distributedBinding = new DistributedSCABindingImpl();
distributedBinding.setSCABinding(binding);
distributedProvider =
distributedProviderFactory.createServiceBindingProvider(component, service, distributedBinding);
} else {
/* do nothing at the moment as only apps using the node implementation
* will currently have the distributed domain set.
*
throw new IllegalStateException("No distributed domain available for component: "+
component.getName() +
" and service: " +
service.getName());
*/
}
} else {
/* do nothing at the moment as all services with remotable interfaces
* are marked as remote
throw new IllegalStateException("No distributed SCA binding available for component: "+
component.getName() +
" and service: " +
service.getName());
*/
}
}
}
public InterfaceContract getBindingInterfaceContract() {
if (distributedProvider != null) {
return distributedProvider.getBindingInterfaceContract();
} else {
if (service.getService() != null) {
return service.getService().getInterfaceContract();
} else {
return service.getInterfaceContract();
}
}
}
public boolean supportsOneWayInvocation() {
return false;
}
public void start() {
if (distributedProvider != null) {
distributedProvider.start();
}
}
public void stop() {
if (distributedProvider != null) {
distributedProvider.stop();
}
if (distributedBinding != null) {
// reset the binding URI to null so that if the composite containing the component
// with the service/binding is restarted the binding will have the correct URI set
SCABinding scaBinding = distributedBinding.getSCABinding();
try {
URI tempURI = new URI(scaBinding.getURI());
if (!tempURI.isAbsolute()){
scaBinding.setURI(null);
}
} catch (Exception ex){
scaBinding.setURI(null);
}
}
}
}
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