1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/**
*
* 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.webapp;
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.client.BootstrapHelper;
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.SystemCompositeContext;
import org.apache.tuscany.core.context.event.ModuleStop;
import org.apache.tuscany.core.context.event.ModuleStart;
import org.apache.tuscany.core.context.event.HttpSessionEnd;
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;
import org.osoa.sca.CurrentModuleContext;
import org.osoa.sca.ModuleContext;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
/**
* ServletContextListener that can be added to a standard web application to boot
* a Tuscany runtime inside that application. All implementation classes should
* be located in the web application itself.
*
* @version $Rev: 380792 $ $Date: 2006-02-24 11:25:11 -0800 (Fri, 24 Feb 2006) $
*/
public class TuscanyServletListener implements ServletContextListener, HttpSessionListener {
public static final String SCA_COMPONENT_NAME = "org.apache.tuscany.core.webapp.ModuleComponentName";
public static final String MODULE_COMPONENT_NAME = "org.apache.tuscany.core.webapp.ModuleComponentContext";
public static final String TUSCANY_RUNTIME_NAME = RuntimeContext.class.getName();
private RuntimeContext runtime;
private CompositeContext moduleContext;
private static final String SYSTEM_MODULE_COMPONENT = "org.apache.tuscany.core.system";
public void contextInitialized(ServletContextEvent servletContextEvent) {
ServletContext servletContext = servletContextEvent.getServletContext();
String name = servletContext.getInitParameter(SCA_COMPONENT_NAME);
String uri = name; // todo get from context path
MonitorFactory monitorFactory = new NullMonitorFactory(); // todo have one that writes to the servlet log
try {
bootRuntime(name, uri, monitorFactory);
} catch (ConfigurationException e) {
throw new RuntimeException(e.getMessage(), e);
}
servletContext.setAttribute(TUSCANY_RUNTIME_NAME, runtime);
servletContext.setAttribute(MODULE_COMPONENT_NAME, moduleContext);
}
public void contextDestroyed(ServletContextEvent servletContextEvent) {
moduleContext.publish(new ModuleStop(this));
moduleContext.stop();
SystemCompositeContext systemContext = runtime.getSystemContext();
systemContext.publish(new ModuleStop(this));
systemContext.stop();
runtime.stop();
servletContextEvent.getServletContext().removeAttribute(MODULE_COMPONENT_NAME);
servletContextEvent.getServletContext().removeAttribute(TUSCANY_RUNTIME_NAME);
}
public void sessionCreated(HttpSessionEvent event) {
// do nothing since sessions are lazily created in {@link TuscanyRequestFilter}
}
public void sessionDestroyed(HttpSessionEvent event) {
// todo do we actually need to bind the module context to the thread to fire this event?
ModuleContext oldContext = CurrentModuleContext.getContext();
try {
ContextBinder.BINDER.setContext((ModuleContext) moduleContext);
moduleContext.publish(new HttpSessionEnd(this, event.getSession()));
} finally{
ContextBinder.BINDER.setContext(oldContext);
}
}
private void bootRuntime(String name, String uri, MonitorFactory monitorFactory) throws ConfigurationException {
// 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);
moduleContext.publish(new ModuleStart(this));
}
}
|
