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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-M5-RC2/distribution/tomcat/tomcat-hook/src/main/java/org/apache/tuscany/sca/tomcat/TuscanyStandardContext.java | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/sca-java-2.x/tags/2.0-M5-RC2/distribution/tomcat/tomcat-hook/src/main/java/org/apache/tuscany/sca/tomcat/TuscanyStandardContext.java b/sca-java-2.x/tags/2.0-M5-RC2/distribution/tomcat/tomcat-hook/src/main/java/org/apache/tuscany/sca/tomcat/TuscanyStandardContext.java deleted file mode 100644 index ca9c81f1c3..0000000000 --- a/sca-java-2.x/tags/2.0-M5-RC2/distribution/tomcat/tomcat-hook/src/main/java/org/apache/tuscany/sca/tomcat/TuscanyStandardContext.java +++ /dev/null @@ -1,196 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you 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.sca.tomcat; - -import java.io.File; -import java.lang.reflect.Method; -import java.net.URI; -import java.net.URL; -import java.net.URLClassLoader; -import java.util.logging.Logger; - -import javax.naming.NameClassPair; -import javax.naming.NamingEnumeration; -import javax.naming.NamingException; - -import org.apache.catalina.LifecycleException; -import org.apache.catalina.Loader; -import org.apache.catalina.core.StandardContext; - -/** - * A Tuscany StandardContext to initilize SCA applications. - * There is a StandardContext instance for each webapp and its - * called to handle all start/stop/etc requests. This intercepts - * the start and inserts any required Tuscany configuration. - */ -public class TuscanyStandardContext extends StandardContext { - private static final long serialVersionUID = 1L; - private static final Logger log = Logger.getLogger(TuscanyStandardContext.class.getName()); - - private boolean isSCAApp; - - // TODO: this gives an instance per webapp, work out how to have only one per server - // ?? is that comment still true? - private static URLClassLoader tuscanyClassLoader; - private static Object node; - private static Class<?> nodeClass; - private static Method nodeStopMethod; - - public TuscanyStandardContext() { - } - - /** - * Overrides the getLoader method in the Tomcat StandardContext as its a convenient - * point to insert the Tuscany initilization. This gets called the first time during - * StandardContext.start after the webapp resources have been created so this can - * use getResources() to look for the SCA web.composite or sca-contribution.xml files, - * but its still early enough in start to insert the required Tuscany config. - */ - @Override - public Loader getLoader() { - if (loader != null) { - return loader; - } - - ClassLoader parent = getParentClassLoader(); - if (isSCAApp = isSCAApplication()) { - if (tuscanyClassLoader == null) { - initTuscany(); - } - setParentClassLoader(getTuscanyClassloader(parent)); - setDefaultWebXml("conf/tuscany-web.xml"); - } - - return super.getLoader(); - } - - @Override - public boolean listenerStart() { - if (isSCAApp) { - enableTuscany(); - } - return super.listenerStart(); - } - - private void enableTuscany() { - - if (isUseNaming() && getNamingContextListener() != null) { - setAnnotationProcessor(new TuscanyAnnotationsProcessor(this, getNamingContextListener().getEnvContext())); - } else { - setAnnotationProcessor(new TuscanyAnnotationsProcessor(this, null)); - } - - log.info("Tuscany SCA is enabled for: " + this.getName()); - } - - private boolean isSCAApplication() { - Object o = null; - try { - o = getResources().lookup("WEB-INF/web.composite"); - } catch (NamingException e) { - } - if (o == null) { - try { - o = getResources().lookup("META-INF/sca-contribution.xml"); - } catch (NamingException e) { - } - } - if (o == null) { - return false; - } - - // Try to see if the Tuscany jars are packaged in the webapp - NamingEnumeration<NameClassPair> enumeration; - try { - enumeration = getResources().list("WEB-INF/lib"); - while (enumeration.hasMoreElements()) { - String jar = enumeration.nextElement().getName(); - if (jar.startsWith("tuscany-")) { - // Do not alter is - log.info("Tuscany SCA ignoring webapp with embedded Tuscany runtime: " + this.getName()); - return false; - } - } - } catch (NamingException e) { - } - return true; - } - - private URLClassLoader getTuscanyClassloader(ClassLoader parent) { - return tuscanyClassLoader; - } - - private void initTuscany() { - initTuscanyClassloader(getParentClassLoader()); - initDomain(); - } - - private void initTuscanyClassloader(ClassLoader parent) { - if (tuscanyClassLoader == null) { - File tuscanyWar = new File(System.getProperty(TuscanyLifecycleListener.TUSCANY_WAR_PROP)); - File[] runtimeJars = new File(tuscanyWar, "tuscany-lib").listFiles(); - try { - URL[] jarURLs = new URL[runtimeJars.length]; - for (int i = 0; i < jarURLs.length; i++) { - jarURLs[i] = runtimeJars[i].toURI().toURL(); - } - tuscanyClassLoader = new URLClassLoader(jarURLs, parent); - - } catch (Exception e) { - throw new RuntimeException(e); - } - } - } - - private void initDomain() { - ClassLoader oldCL = Thread.currentThread().getContextClassLoader(); - try { - Thread.currentThread().setContextClassLoader(tuscanyClassLoader); - Class<?> nodeFactoryClass = Class.forName("org.apache.tuscany.sca.node.NodeFactory", true, tuscanyClassLoader); - Method getInstanceMethod = nodeFactoryClass.getMethod("getInstance", new Class[0]); - Object instance = getInstanceMethod.invoke(null); - Method createNodeMethod = nodeFactoryClass.getMethod("createNode", new Class[]{URI.class, new String[0].getClass()}); - URI domainURI = URI.create(TuscanyLifecycleListener.getDomainURI()); - this.node = createNodeMethod.invoke(instance, new Object[]{domainURI, new String[0]}); - this.nodeClass = Class.forName("org.apache.tuscany.sca.node.Node", true, tuscanyClassLoader); - Method nodeStartMethod = nodeClass.getMethod("start", new Class[0]); - this.nodeStopMethod = nodeClass.getMethod("stop", new Class[0]); - nodeStartMethod.invoke(node); - } catch (Exception e) { - throw new RuntimeException(e); - } finally { - Thread.currentThread().setContextClassLoader(oldCL); - } - } - - @Override - public synchronized void stop() throws LifecycleException { - super.stop(); - - if (node != null && nodeStopMethod != null) { - try { - nodeStopMethod.invoke(node); - node = null; - } catch (Exception e) { - throw new RuntimeException(e); - } - } - } -} |