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Java > Open Source Codes > net > sourceforge > cruisecontrol > interceptor > PluginsInterceptor


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2  * CruiseControl, a Continuous Integration Toolkit
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37 package net.sourceforge.cruisecontrol.interceptor;
38
39 import java.io.IOException JavaDoc;
40 import java.util.Map JavaDoc;
41
42 import javax.management.AttributeNotFoundException JavaDoc;
43 import javax.management.InstanceNotFoundException JavaDoc;
44 import javax.management.MBeanException JavaDoc;
45 import javax.management.ReflectionException JavaDoc;
46
47 import org.jdom.JDOMException;
48
49 import net.sourceforge.cruisecontrol.Configuration;
50 import net.sourceforge.cruisecontrol.CruiseControlException;
51 import net.sourceforge.cruisecontrol.PluginDetail;
52
53 import com.opensymphony.xwork.Action;
54 import com.opensymphony.xwork.ActionContext;
55 import com.opensymphony.xwork.ActionInvocation;
56 import com.opensymphony.xwork.interceptor.AroundInterceptor;
57
58 /**
59  * Understands how to load available plugins for PluginAware actions.
60  */
61 public class PluginsInterceptor extends AroundInterceptor {
62     protected void before(ActionInvocation invocation) throws Exception JavaDoc {
63         Action action = invocation.getAction();
64
65         if (action instanceof PluginsAware) {
66             ActionContext invocationContext = invocation.getInvocationContext();
67             Map JavaDoc parameters = invocationContext.getParameters();
68
69             String JavaDoc pluginType = ((String JavaDoc[]) parameters.get("pluginType"))[0];
70             if (pluginType != null) {
71                 PluginsAware pluginsAction = (PluginsAware) action;
72                 Configuration configuration = getConfiguration(invocationContext);
73                 PluginLocator locator = new PluginLocator(configuration);
74
75                 pluginsAction.setAvailablePlugins(getAvailablePlugins(locator, pluginType));
76                 Map JavaDoc session = invocation.getInvocationContext().getSession();
77                 pluginsAction.setConfiguredPlugins(getConfiguredPlugins(locator, pluginType,
78                         (String JavaDoc) session.get("project")));
79             }
80         }
81     }
82
83     protected void after(ActionInvocation dispatcher, String JavaDoc result) throws Exception JavaDoc {
84     }
85
86     private PluginDetail[] getAvailablePlugins(PluginLocator locator, String JavaDoc pluginType)
87             throws AttributeNotFoundException JavaDoc, InstanceNotFoundException JavaDoc, MBeanException JavaDoc, ReflectionException JavaDoc,
88             IOException JavaDoc {
89         return locator.getAvailablePlugins(pluginType);
90     }
91
92     private PluginDetail[] getConfiguredPlugins(PluginLocator locator, String JavaDoc pluginType, String JavaDoc project)
93             throws AttributeNotFoundException JavaDoc, InstanceNotFoundException JavaDoc, MBeanException JavaDoc, ReflectionException JavaDoc,
94             IOException JavaDoc, CruiseControlException, JDOMException {
95         if (project != null) {
96             return locator.getConfiguredPlugins(project, pluginType);
97         }
98
99         return null;
100     }
101
102     private Configuration getConfiguration(ActionContext invocationContext) {
103         return (Configuration) invocationContext.getSession().get("cc-configuration");
104     }
105 }
106
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