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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.runtime.tomcat;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;
import org.apache.catalina.core.StandardContext;
import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.assembly.Component;
import org.apache.tuscany.sca.assembly.Endpoint;
import org.apache.tuscany.sca.assembly.builder.DefaultEndpointBuilder;
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;
import org.apache.tuscany.sca.host.embedded.SCADomain;
import org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain;
import org.apache.tuscany.sca.host.webapp.WebAppServletHost;
import org.apache.tuscany.sca.monitor.Monitor;
import org.apache.tuscany.sca.monitor.Problem;
/**
* 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 resolve() {
if (endpoint.isUnresolved()){
logger.info("resolving endpoint: " + endpoint.getTargetName());
Component target = findTarget();
if (target != null) {
logger.info("endpoint target found: " + endpoint.getTargetName() + " component " + target);
resolveEndpoint(target);
} else {
logger.info("endpoint target not found: " + endpoint.getTargetName());
}
}
}
protected void resolveEndpoint(Component targetComponent) {
endpoint.setTargetComponent(targetComponent);
endpoint.setTargetComponentService(targetComponent.getServices().get(0)); // TODO real service
DefaultEndpointBuilder ebi = new DefaultEndpointBuilder(new Monitor() {
public void problem(Problem problem) {
logger.warning(problem.toString());
}});
ebi.build(endpoint);
}
protected Component findTarget() {
for (StandardContext sc : TuscanyHost.scaApps) {
SCADomain scaDomain = (SCADomain)sc.getServletContext().getAttribute(WebAppServletHost.SCA_DOMAIN_ATTRIBUTE);
if (scaDomain != null) {
Component component = ((DefaultSCADomain)scaDomain).getComponent(endpoint.getTargetName());
if ( component != null) {
return component;
}
}
}
return null;
}
public void stop() {
if (!endpoint.isUnresolved()){
// Currently the CompositeActivator stop() should take care of the providers and
// wires that have been added.
}
}
}
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