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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.core.client;
import java.util.ArrayList;
import java.util.List;
import org.apache.tuscany.common.monitor.MonitorFactory;
import org.apache.tuscany.common.monitor.impl.NullMonitorFactory;
import org.apache.tuscany.common.resource.ResourceLoader;
import org.apache.tuscany.common.resource.impl.ResourceLoaderImpl;
import org.apache.tuscany.core.builder.RuntimeConfigurationBuilder;
import org.apache.tuscany.core.builder.impl.DefaultWireBuilder;
import org.apache.tuscany.core.config.ConfigurationException;
import org.apache.tuscany.core.config.ModuleComponentConfigurationLoader;
import org.apache.tuscany.core.config.impl.ModuleComponentConfigurationLoaderImpl;
import org.apache.tuscany.core.context.AggregateContext;
import org.apache.tuscany.core.context.CoreRuntimeException;
import org.apache.tuscany.core.context.EventContext;
import org.apache.tuscany.core.runtime.RuntimeContext;
import org.apache.tuscany.core.runtime.RuntimeContextImpl;
import org.apache.tuscany.core.system.builder.SystemComponentContextBuilder;
import org.apache.tuscany.core.system.builder.SystemEntryPointBuilder;
import org.apache.tuscany.core.system.builder.SystemExternalServiceBuilder;
import org.apache.tuscany.core.system.loader.SystemSCDLModelLoader;
import org.apache.tuscany.model.assembly.AssemblyFactory;
import org.apache.tuscany.model.assembly.AssemblyModelContext;
import org.apache.tuscany.model.assembly.ModuleComponent;
import org.apache.tuscany.model.assembly.impl.AssemblyFactoryImpl;
import org.apache.tuscany.model.assembly.impl.AssemblyModelContextImpl;
import org.apache.tuscany.model.assembly.loader.AssemblyModelLoader;
import org.apache.tuscany.model.scdl.loader.SCDLModelLoader;
import org.apache.tuscany.model.scdl.loader.impl.SCDLAssemblyModelLoaderImpl;
import org.osoa.sca.ModuleContext;
import org.osoa.sca.SCA;
import org.osoa.sca.ServiceRuntimeException;
/**
* Create and initialize a Tuscany SCA runtime environment.
*
* @version $Rev$ $Date$
*/
public class TuscanyRuntime extends SCA {
private final Monitor monitor;
private final Object sessionKey = new Object();
private final RuntimeContext runtimeContext;
private AggregateContext systemModuleComponentContext;
private AggregateContext moduleContext;
private final static String SYSTEM_MODULE_COMPONENT = "org.apache.tuscany.core.system";
/**
* Construct a runtime using a null MonitorFactory.
*
* @param name the name of the module component
* @param uri the URI to assign to the module component
* @throws ConfigurationException if there was a problem loading the SCA configuration
* @see TuscanyRuntime#TuscanyRuntime(String, String, org.apache.tuscany.common.monitor.MonitorFactory)
*/
public TuscanyRuntime(String name, String uri) throws ConfigurationException {
this(name, uri, new NullMonitorFactory());
}
/**
* Construct a runtime containing a single module component with the
* specified name. The module definition is loaded from a "/sca.module"
* resource found on the classpath of the current Thread context classloader.
*
* @param name the name of the module component
* @param uri the URI to assign to the module component
* @param monitorFactory the MonitorFactory for this runtime
* @throws ConfigurationException if there was a problem loading the SCA configuration
*/
public TuscanyRuntime(String name, String uri, MonitorFactory monitorFactory) throws ConfigurationException {
this.monitor = monitorFactory.getMonitor(Monitor.class);
// Create a resource loader from the current classloader
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
ResourceLoader resourceLoader = new ResourceLoaderImpl(classLoader);
// Create an assembly model factory
AssemblyFactory modelFactory=new AssemblyFactoryImpl();
// Create an assembly model loader
List<SCDLModelLoader> scdlLoaders=new ArrayList<SCDLModelLoader>();
scdlLoaders.add(new SystemSCDLModelLoader());
AssemblyModelLoader modelLoader=new SCDLAssemblyModelLoaderImpl(scdlLoaders);
// Create an assembly model context
AssemblyModelContext modelContext = new AssemblyModelContextImpl(modelFactory, modelLoader, resourceLoader);
// Create system configuration builders
List<RuntimeConfigurationBuilder> configBuilders = new ArrayList();
configBuilders.add((new SystemComponentContextBuilder()));
configBuilders.add(new SystemEntryPointBuilder());
configBuilders.add(new SystemExternalServiceBuilder());
// Create a runtime context and start it
runtimeContext = new RuntimeContextImpl(monitorFactory, scdlLoaders, configBuilders,new DefaultWireBuilder());
runtimeContext.start();
monitor.started(runtimeContext);
// Get the system context
AggregateContext systemContext = runtimeContext.getSystemContext();
// Load the system module component
ModuleComponentConfigurationLoader loader = new ModuleComponentConfigurationLoaderImpl(modelContext);
ModuleComponent systemModuleComponent = loader.loadSystemModuleComponent(SYSTEM_MODULE_COMPONENT, SYSTEM_MODULE_COMPONENT);
// Register it with the system context
systemContext.registerModelObject(systemModuleComponent);
// Get the aggregate context representing the system module component
systemModuleComponentContext = (AggregateContext) systemContext.getContext(SYSTEM_MODULE_COMPONENT);
systemModuleComponentContext.registerModelObject(systemModuleComponent.getComponentImplementation());
systemModuleComponentContext.fireEvent(EventContext.MODULE_START, null);
// Load the SCDL configuration of the application module
ModuleComponent moduleComponent = loader.loadModuleComponent(name, uri);
// Register it under the root application context
runtimeContext.getRootContext().registerModelObject(moduleComponent);
moduleContext=(AggregateContext)runtimeContext.getContext(moduleComponent.getName());
moduleContext.registerModelObject(moduleComponent.getComponentImplementation());
}
/**
* Start the runtime and associate the module context with the calling thread.
*/
@Override
public void start() {
setModuleContext((ModuleContext)moduleContext);
try {
//moduleContext.start();
moduleContext.fireEvent(EventContext.MODULE_START, null);
moduleContext.fireEvent(EventContext.REQUEST_START, null);
moduleContext.fireEvent(EventContext.SESSION_NOTIFY, sessionKey);
monitor.started(moduleContext);
} catch (CoreRuntimeException e) {
setModuleContext(null);
monitor.startFailed(moduleContext, e);
//FIXME throw a better exception
throw new ServiceRuntimeException(e);
}
}
/**
* Disassociate the module context from the current thread and shut down the runtime.
*/
@Override
public void stop() {
setModuleContext(null);
moduleContext.fireEvent(EventContext.REQUEST_END, null);
moduleContext.fireEvent(EventContext.SESSION_END, sessionKey);
moduleContext.fireEvent(EventContext.MODULE_STOP, null);
moduleContext.stop();
monitor.stopped(moduleContext);
runtimeContext.stop();
monitor.stopped(runtimeContext);
}
/**
* Monitor interface for a TuscanyRuntime.
*/
public static interface Monitor {
/**
* Event emitted after the runtime has been started.
*
* @param ctx the runtime's module component context
*/
void started(AggregateContext ctx);
/**
* Event emitted when an attempt to start the runtime failed.
*
* @param ctx the runtime's module component context
* @param e the exception that caused the failure
*/
void startFailed(AggregateContext ctx, CoreRuntimeException e);
/**
* Event emitted after the runtime has been stopped.
*
* @param ctx the runtime's module component context
*/
void stopped(AggregateContext ctx);
}
}
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