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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 org.osoa.sca.ModuleContext;
import org.osoa.sca.SCA;
import org.osoa.sca.ServiceRuntimeException;
import org.apache.tuscany.common.monitor.LogLevel;
import org.apache.tuscany.common.monitor.MonitorFactory;
import org.apache.tuscany.common.monitor.impl.NullMonitorFactory;
import org.apache.tuscany.core.builder.ContextFactoryBuilderRegistry;
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.context.CompositeContext;
import org.apache.tuscany.core.context.CoreRuntimeException;
import org.apache.tuscany.core.context.SystemCompositeContext;
import org.apache.tuscany.core.context.event.HttpSessionBound;
import org.apache.tuscany.core.context.event.HttpSessionEnd;
import org.apache.tuscany.core.context.event.ModuleStart;
import org.apache.tuscany.core.context.event.ModuleStop;
import org.apache.tuscany.core.context.event.RequestEnd;
import org.apache.tuscany.core.context.event.RequestStart;
import org.apache.tuscany.core.runtime.RuntimeContext;
import org.apache.tuscany.core.runtime.RuntimeContextImpl;
import org.apache.tuscany.model.assembly.AssemblyContext;
import org.apache.tuscany.model.assembly.ModuleComponent;
/**
* 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 runtime;
private final CompositeContext moduleContext;
private static final 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 {
assert(monitorFactory != null): "monitor factory was null";
this.monitor = monitorFactory.getMonitor(Monitor.class);
// Create an assembly model context
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
AssemblyContext modelContext = BootstrapHelper.getModelContext(classLoader);
// Create a runtime context and start it
ContextFactoryBuilderRegistry builderRegistry = BootstrapHelper.bootstrapContextFactoryBuilders(monitorFactory);
runtime = new RuntimeContextImpl(monitorFactory, builderRegistry, new DefaultWireBuilder());
runtime.start();
// Load and start the system configuration
SystemCompositeContext systemContext = runtime.getSystemContext();
BootstrapHelper.bootstrapStaxLoader(systemContext, modelContext);
ModuleComponentConfigurationLoader loader = BootstrapHelper.getConfigurationLoader(systemContext, modelContext);
ModuleComponent systemModuleComponent = loader.loadSystemModuleComponent(SYSTEM_MODULE_COMPONENT, SYSTEM_MODULE_COMPONENT);
CompositeContext context = BootstrapHelper.registerModule(systemContext, systemModuleComponent);
context.publish(new ModuleStart(this));
// Load the SCDL configuration of the application module
CompositeContext rootContext = runtime.getRootContext();
ModuleComponent moduleComponent = loader.loadModuleComponent(name, uri);
moduleContext = BootstrapHelper.registerModule(rootContext, moduleComponent);
if (moduleContext.getURI() == null){
moduleContext.setURI(uri);
}
//TODO remove hack
moduleContext.setAssemblyContext(modelContext);
}
/**
* Start the runtime and associate the module context with the calling thread.
*/
@Override
public void start() {
setModuleContext((ModuleContext) moduleContext);
try {
//moduleContext.start();
moduleContext.publish(new ModuleStart(this));
moduleContext.publish(new RequestStart(this, new Object()));
moduleContext.publish(new HttpSessionBound(this, sessionKey));
monitor.moduleStarted(moduleContext.getName());
} catch (CoreRuntimeException e) {
setModuleContext(null);
monitor.moduleStartFailed(moduleContext.getName(), 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.publish(new RequestEnd(this, new Object()));
moduleContext.publish(new HttpSessionEnd(this, sessionKey));
moduleContext.publish(new ModuleStop(this));
moduleContext.stop();
monitor.moduleStopped(moduleContext.getName());
}
/**
* Shut down the Tuscany runtime.
*/
public void shutdown() {
runtime.getSystemContext().publish(new ModuleStop(this));
runtime.stop();
}
/**
* Monitor interface for a TuscanyRuntime.
*/
public static interface Monitor {
/**
* Event emitted after an application module has been started.
*
* @param name the name of the application module
*/
@LogLevel("INFO")
void moduleStarted(String name);
/**
* Event emitted when an attempt to start an application module failed.
*
* @param name the name of the application module
* @param e the exception that caused the failure
*/
@LogLevel("SEVERE")
void moduleStartFailed(String name, CoreRuntimeException e);
/**
* Event emitted after an application module has been stopped.
*
* @param name the name of the application module
*/
@LogLevel("INFO")
void moduleStopped(String name);
}
}
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