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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.container.groovy;
import groovy.lang.GroovyClassLoader;
import groovy.lang.GroovyObject;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.tuscany.spi.ObjectFactory;
import org.apache.tuscany.spi.builder.BuilderConfigException;
import org.apache.tuscany.spi.component.Component;
import org.apache.tuscany.spi.component.CompositeComponent;
import org.apache.tuscany.spi.deployer.DeploymentContext;
import org.apache.tuscany.spi.extension.ComponentBuilderExtension;
import org.apache.tuscany.spi.model.ComponentDefinition;
import org.apache.tuscany.spi.model.Property;
import org.apache.tuscany.spi.model.ServiceDefinition;
import org.codehaus.groovy.control.CompilationFailedException;
/**
* Extension point for creating {@link GroovyAtomicComponent}s from an assembly configuration
*
* @version $$Rev$$ $$Date$$
*/
public class GroovyComponentBuilder extends ComponentBuilderExtension<GroovyImplementation> {
protected Class<GroovyImplementation> getImplementationType() {
return GroovyImplementation.class;
}
@SuppressWarnings("unchecked")
public Component build(CompositeComponent parent,
ComponentDefinition<GroovyImplementation> componentDefinition,
DeploymentContext deploymentContext)
throws BuilderConfigException {
String name = componentDefinition.getName();
GroovyImplementation implementation = componentDefinition.getImplementation();
GroovyComponentType componentType = implementation.getComponentType();
int initLevel = componentType.getInitLevel();
// get list of serviceBindings provided by this component
Collection<ServiceDefinition> collection = componentType.getServices().values();
List<Class<?>> services = new ArrayList<Class<?>>(collection.size());
for (ServiceDefinition serviceDefinition : collection) {
services.add(serviceDefinition.getServiceContract().getInterfaceClass());
}
// get the Groovy classloader for this deployment component
GroovyClassLoader groovyClassLoader = (GroovyClassLoader) deploymentContext.getExtension("groovy.classloader");
if (groovyClassLoader == null) {
groovyClassLoader = new GroovyClassLoader(implementation.getApplicationLoader());
deploymentContext.putExtension("groovy.classloader", groovyClassLoader);
}
// create the implementation class for the script
Class<? extends GroovyObject> groovyClass;
try {
String script = implementation.getScript();
// REVIEW JFM can we cache the class?
groovyClass = groovyClassLoader.parseClass(script);
} catch (CompilationFailedException e) {
throw new BuilderConfigException(name, e);
}
// TODO deal with init and destroy
GroovyConfiguration configuration = new GroovyConfiguration();
configuration.setName(name);
configuration.setGroovyClass(groovyClass);
configuration.setParent(parent);
configuration.setWireService(wireService);
configuration.setWorkContext(workContext);
configuration.setInitLevel(initLevel);
configuration.setServices(services);
configuration.setMonitor(monitor);
GroovyAtomicComponent component = new GroovyAtomicComponent(configuration);
// handle properties
for (Property<?> property : componentType.getProperties().values()) {
ObjectFactory<?> factory = property.getDefaultValueFactory();
if (factory != null) {
component.addPropertyFactory(property.getName(), factory);
}
}
return component;
}
}
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