1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one or more
4 * contributor license agreements. See the NOTICE file distributed with
5 * this work for additional information regarding copyright ownership.
6 * The ASF licenses this file to You under the Apache License, Version 2.0
7 * (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.openejb.tomcat.loader;
19
20 import java.io.File;
21 import java.util.Properties;
22
23 import javax.management.ObjectName;
24
25 import org.apache.catalina.Container;
26 import org.apache.catalina.LifecycleEvent;
27 import org.apache.catalina.LifecycleListener;
28 import org.apache.catalina.ServerFactory;
29 import org.apache.catalina.Service;
30 import org.apache.catalina.core.StandardContext;
31 import org.apache.catalina.core.StandardEngine;
32 import org.apache.catalina.core.StandardHost;
33 import org.apache.catalina.core.StandardServer;
34
35 public class OpenEJBListener implements LifecycleListener {
36 static private boolean listenerInstalled;
37
38 public static boolean isListenerInstalled() {
39 return listenerInstalled;
40 }
41
42 public void lifecycleEvent(LifecycleEvent event) {
43 // only install once
44 if (listenerInstalled) return;
45 listenerInstalled = true;
46
47 Properties properties = new Properties();
48 File webappDir = findOpenEjbWar();
49 properties.setProperty("openejb.war", webappDir.getAbsolutePath());
50
51 properties.setProperty("openejb.embedder.source", getClass().getSimpleName());
52
53 TomcatEmbedder.embed(properties, StandardServer.class.getClassLoader());
54 }
55
56 private static File findOpenEjbWar() {
57 // in Tomcat 5.5 the OpenEjb war is in the server/webapps director
58 String catalinaBase = System.getProperty("catalina.base");
59 File serverWebapps = new File(catalinaBase, "server/webapps");
60 File openEjbWar = findOpenEjbWar(serverWebapps);
61 if (openEjbWar != null) {
62 return openEjbWar;
63 }
64
65 // in Tomcat 6 the OpenEjb war is normally in webapps, but we just scan all hosts directories
66 for (Service service : ServerFactory.getServer().findServices()) {
67 Container container = service.getContainer();
68 if (container instanceof StandardEngine) {
69 StandardEngine engine = (StandardEngine) container;
70 for (Container child : engine.findChildren()) {
71 if (child instanceof StandardHost) {
72 StandardHost host = (StandardHost) child;
73 String appBase = host.getAppBase();
74
75 // determine the host dir (normally webapps)
76 File hostDir = new File(appBase);
77 if (!hostDir.isAbsolute()) {
78 hostDir = new File(catalinaBase, appBase);
79 }
80
81 openEjbWar = findOpenEjbWar(hostDir);
82 if (openEjbWar != null) {
83 return openEjbWar;
84 } else {
85 return findOpenEjbWar(host);
86 }
87 }
88 }
89 }
90 }
91
92
93 return null;
94 }
95
96 private static File findOpenEjbWar(StandardHost standardHost) {
97 //look for openejb war in a Tomcat context
98 for(Container container : standardHost.findChildren()) {
99 if(container instanceof StandardContext) {
100 StandardContext standardContext = (StandardContext)container;
101 File contextDocBase = new File(standardContext.getDocBase());
102 if(contextDocBase.isDirectory()) {
103 File openEjbWar = findOpenEjbWarInContext(contextDocBase);
104 if (openEjbWar != null) {
105 return openEjbWar;
106 }
107 }
108 }
109 }
110 return null;
111 }
112
113 private static File findOpenEjbWar(File hostDir) {
114 if (!hostDir.isDirectory()) {
115 return null;
116 }
117
118 // iterate over the contexts
119 for (File contextDir : hostDir.listFiles()) {
120 File foundContextDir = findOpenEjbWarInContext(contextDir);
121 if(foundContextDir != null) {
122 return foundContextDir;
123 }
124 }
125 return null;
126 }
127
128 private static File findOpenEjbWarInContext(File contextDir) {
129 // does this war have a web-inf lib dir
130 File webInfLib = new File(new File(contextDir, "WEB-INF"), "lib");
131 if (!webInfLib.isDirectory()) {
132 return null;
133 }
134 // iterate over the libs looking for the openejb-loader-*.jar
135 for (File file : webInfLib.listFiles()) {
136 if (file.getName().startsWith("openejb-tomcat-loader-") && file.getName().endsWith(".jar")) {
137 // this should be the openejb war...
138 // make sure it has a lib directory
139 if (new File(contextDir, "lib").isDirectory()) {
140 return contextDir;
141 }
142 }
143 }
144 return null;
145 }
146 }