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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.endpoint.impl;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;
import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.assembly.Endpoint;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.endpointresolver.EndpointResolver;
import org.apache.tuscany.sca.endpointresolver.EndpointResolverFactory;
import org.apache.tuscany.sca.endpointresolver.EndpointResolverFactoryExtensionPoint;
/**
* The endpoint resolver allows unresolved endpoints to be plumbed into
* the runtime start and message send processing as a hook to late resolution
* of target services
*
* @version $Rev$ $Date$
*/
public class EndpointResolverImpl implements EndpointResolver {
private final static Logger logger = Logger.getLogger(EndpointResolverImpl.class.getName());
private Endpoint endpoint;
private List<EndpointResolver> endpointResolvers = new ArrayList<EndpointResolver>();
public EndpointResolverImpl(ExtensionPointRegistry extensionPoints,
Endpoint endpoint) {
this.endpoint = endpoint;
EndpointResolverFactoryExtensionPoint resolverFactories =
extensionPoints.getExtensionPoint(EndpointResolverFactoryExtensionPoint.class);
for (Binding binding : endpoint.getCandidateBindings()){
EndpointResolverFactory resolverFactory = resolverFactories.getEndpointResolverFactory(binding.getClass());
// if the binding in question has a endpoint resolver factory they try and
// create an endpoint resolver
if (resolverFactory != null){
EndpointResolver resolver = resolverFactory.createEndpointResolver(endpoint, binding);
if (resolver != null){
endpointResolvers.add(resolver);
}
}
}
}
public void start(){
// do nothing
}
public void stop(){
// do nothing
}
public void resolve() {
if (endpoint.isUnresolved()){
// Resolve the endpoint binding here
// first do any general resolution that's required
// ask the bindings to resolve the endpoint one by one
for (EndpointResolver resolver : endpointResolvers){
resolver.resolve();
if (endpoint.isUnresolved() != true){
break;
}
}
if (endpoint.isUnresolved()){
// TODO: TUSCANY-2580: if its still unresolved use the first candidate binding
endpoint.setSourceBinding(endpoint.getCandidateBindings().get(0));
endpoint.getSourceBinding().setURI(endpoint.getTargetName());
}
if (endpoint.isUnresolved() != true){
// If we have to build the endpoint because we are matching
// intents and policies then we do that now. If the binding
// is just configured by setting its uri we can just do local binding
// configuration here
// EndpointBuilderImpl.build(endpoint);
} else {
// raise an exception saying the endpoint can't be resolved
}
}
}
}
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