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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.distributed.node.impl;
import java.net.URL;
import org.apache.tuscany.sca.assembly.Composite;
import org.apache.tuscany.sca.contribution.Contribution;
import org.apache.tuscany.sca.contribution.service.ContributionService;
import org.apache.tuscany.sca.core.assembly.ActivationException;
import org.apache.tuscany.sca.distributed.domain.DistributedSCADomain;
import org.apache.tuscany.sca.distributed.domain.impl.DistributedSCADomainImpl;
import org.apache.tuscany.sca.host.embedded.SCADomain;
import org.apache.tuscany.sca.host.embedded.impl.EmbeddedSCADomain;
/**
* An embeddable node implementation.
*/
public class EmbeddedNode {
// The data required to get the domain up and running on this node
private String nodeName;
private String domainName;
private EmbeddedSCADomain domain;
private DistributedSCADomainImpl distributedDomain;
// Node management
private EmbeddedSCADomain management;
public EmbeddedNode(String nodeName)
throws ActivationException {
this.nodeName = nodeName;
try {
// This is starting a local domain just to use component references to
// talk to the domain node. It maybe that we can slim this down when we have the
// remote service reference code working.
ClassLoader cl = EmbeddedNode.class.getClassLoader();
// start a local domain to run management components
management = new EmbeddedSCADomain(cl, "management");
management.start();
// add management composite to the management domain
ContributionService contributionService = management.getContributionService();
URL contributionURL = Thread.currentThread().getContextClassLoader().getResource("management/");
if ( contributionURL != null){
System.err.println(contributionURL.toString());
Contribution contribution = contributionService.contribute("http://management",
contributionURL,
null, //resolver,
false);
Composite composite = contribution.getDeployables().get(0);
management.getDomainComposite().getIncludes().add(composite);
management.getCompositeBuilder().build(composite);
management.getCompositeActivator().activate(composite);
management.getCompositeActivator().start(composite);
// get the management components out of the domain so that they
// can be configured/used. None are yet but this would be the place to
// get components out of the management domain and give them access to
// useful parts of the node
} else {
throw new ActivationException("Can't find the management contribution on the classpath");
}
} catch(ActivationException ex) {
throw ex;
} catch(Exception ex) {
throw new ActivationException(ex);
}
}
public SCADomain attachDomain(DistributedSCADomain distributedDomain)
throws ActivationException {
this.distributedDomain = (DistributedSCADomainImpl) distributedDomain;
domainName = distributedDomain.getDomainName();
try {
ClassLoader cl = EmbeddedNode.class.getClassLoader();
// create and start the local domain
domain = new EmbeddedSCADomain(cl, domainName);
domain.start();
} catch(ActivationException ex) {
throw ex;
} catch(Exception ex) {
throw new ActivationException(ex);
}
// add local information into the distributed domain
this.distributedDomain.setNodeName(nodeName);
this.distributedDomain.setManagementDomain(management);
// add domain information into the management components that need it
return domain;
}
protected void loadContribution(String domainName, URL contributionURL)
throws ActivationException {
try {
// Get ready to add contributions to the domain
ContributionService contributionService = domain.getContributionService();
// Contribute the SCA application
Contribution contribution = contributionService.contribute("http://calculator",
contributionURL,
null, //resolver,
false);
Composite composite = contribution.getDeployables().get(0);
// Add the deployable composite to the domain
domain.getDomainComposite().getIncludes().add(composite);
domain.getCompositeBuilder().build(composite);
distributedDomain.addDistributedDomainToBindings(composite);
domain.getCompositeActivator().activate(composite);
} catch(ActivationException ex) {
throw ex;
} catch(Exception ex) {
throw new ActivationException(ex);
}
}
public void addContribution(String domainName, URL contributionURL)
throws ActivationException {
try {
if (contributionURL == null){
// find the current directory as a URL. This is where our contribution
// will come from
contributionURL = Thread.currentThread().getContextClassLoader().getResource(nodeName + "/");
}
loadContribution(domainName, contributionURL);
} catch(ActivationException ex) {
throw ex;
} catch(Exception ex) {
throw new ActivationException(ex);
}
}
public void start()
throws ActivationException {
for (Composite composite : domain.getDomainComposite().getIncludes() ){
domain.getCompositeActivator().start(composite);
}
}
public void stop()
throws ActivationException {
domain.stop();
}
}
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