From 699d2df521ee26e343c53505a2ac1d546ba1965e Mon Sep 17 00:00:00 2001 From: antelder Date: Sat, 28 Mar 2009 09:46:58 +0000 Subject: Create M2 relese branch git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@759448 13f79535-47bb-0310-9956-ffa450edef68 --- .../tuscany/sca/host/webapp/ServletHostHelper.java | 202 +++++++++++++++++++++ 1 file changed, 202 insertions(+) create mode 100644 branches/sca-java-2.0-M2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/ServletHostHelper.java (limited to 'branches/sca-java-2.0-M2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/ServletHostHelper.java') diff --git a/branches/sca-java-2.0-M2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/ServletHostHelper.java b/branches/sca-java-2.0-M2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/ServletHostHelper.java new file mode 100644 index 0000000000..fd6a3ed22b --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/ServletHostHelper.java @@ -0,0 +1,202 @@ +/* + * 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.host.webapp; + +import java.io.BufferedReader; +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.lang.reflect.Method; +import java.net.MalformedURLException; +import java.net.URL; +import java.util.Collections; +import java.util.Enumeration; +import java.util.List; +import java.util.logging.Logger; + +import javax.naming.InitialContext; +import javax.naming.NamingException; +import javax.servlet.ServletConfig; +import javax.servlet.ServletContext; +import javax.servlet.ServletException; + +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.host.http.ServletHostExtensionPoint; +import org.apache.tuscany.sca.node.Contribution; +import org.apache.tuscany.sca.node.Node; +import org.apache.tuscany.sca.node.NodeFactory; +import org.apache.tuscany.sca.node.impl.NodeImpl; +import org.oasisopen.sca.ServiceRuntimeException; + +public class ServletHostHelper { + private static final Logger logger = Logger.getLogger(ServletHostHelper.class.getName()); + + public static final String SCA_NODE_ATTRIBUTE = Node.class.getName(); + + public static void init(ServletConfig servletConfig) { + init(servletConfig.getServletContext()); + } + + public static ServletHost init(final ServletContext servletContext) { + Node node = (Node)servletContext.getAttribute(SCA_NODE_ATTRIBUTE); + if (node == null) { + try { + node = createNode(servletContext); + servletContext.setAttribute(SCA_NODE_ATTRIBUTE, node); + getServletHost(node).init(new ServletConfig() { + public String getInitParameter(String name) { + return servletContext.getInitParameter(name); + } + public Enumeration getInitParameterNames() { + return servletContext.getInitParameterNames(); + } + public ServletContext getServletContext() { + return servletContext; + } + public String getServletName() { + return servletContext.getServletContextName(); + }}); + } catch (ServletException e) { + throw new RuntimeException(e); + } + } + return getServletHost(node); + } + + private static WebAppServletHost getServletHost(Node node) { + NodeImpl nodeImpl = (NodeImpl) node; + ExtensionPointRegistry eps = nodeImpl.getExtensionPoints(); + ServletHostExtensionPoint servletHosts = eps.getExtensionPoint(ServletHostExtensionPoint.class); + List hosts = servletHosts.getServletHosts(); + if (hosts == null || hosts.size() < 1) { + throw new IllegalStateException("No ServletHost found"); + } + ServletHost servletHost = hosts.get(0); + if (!(servletHost instanceof WebAppServletHost)) { + throw new IllegalStateException("unexpected ServletHost type: " + servletHost); + } + return (WebAppServletHost) servletHost; + } + + private static Node createNode(final ServletContext servletContext) throws ServletException { + String contextPath = initContextPath(servletContext); + String contributionRoot = getContributionRoot(servletContext); + NodeFactory factory = NodeFactory.newInstance(); + String webComposite = getWebComposite(servletContext); + Node node = factory.createNode(contextPath, webComposite, new Contribution(contributionRoot, contributionRoot)); + node.start(); + return node; + } + + private static String getWebComposite(ServletContext servletContext) { + InputStream stream = servletContext.getResourceAsStream("/WEB-INF/web.composite"); + BufferedReader reader = new BufferedReader(new InputStreamReader(stream)); + + StringBuilder sb = new StringBuilder(); + String s = null; + try { + while ((s = reader.readLine()) != null) { + sb.append(s + "\n"); + } + } catch (IOException e) { + throw new ServiceRuntimeException(e); + } finally { + try { + stream.close(); + } catch (IOException e) { + throw new ServiceRuntimeException(e); + } + } + + return sb.toString(); + } + + private static String getContributionRoot(ServletContext servletContext) { + String contributionRoot = null; + try { + + InitialContext ic = new InitialContext(); + URL repoURL = (URL)ic.lookup("java:comp/env/url/contributions"); + + contributionRoot = repoURL.toString(); + + } catch (NamingException e) { + + // ignore exception and use default location + + try { + + String root = servletContext.getInitParameter("contributionRoot"); + if (root == null || root.length() < 1) { + root = "/"; + } + URL rootURL = servletContext.getResource(root); + if (rootURL.getProtocol().equals("jndi")) { + //this is Tomcat case, we should use getRealPath + File warRootFile = new File(servletContext.getRealPath(root)); + contributionRoot = warRootFile.toURI().toString(); + } else { + //this is Jetty case + contributionRoot = rootURL.toString(); + } + + } catch (MalformedURLException mf) { + //ignore, pass null + } + } + + logger.info("contributionRoot: " + contributionRoot); + return contributionRoot; + } + + /** + * Initializes the contextPath + * The 2.5 Servlet API has a getter for this, for pre 2.5 Servlet + * containers use an init parameter. + */ + @SuppressWarnings("unchecked") + private static String initContextPath(ServletContext context) { + String contextPath; + if (Collections.list(context.getInitParameterNames()).contains("contextPath")) { + contextPath = context.getInitParameter("contextPath"); + } else { + try { + // Try to get the method anyway since some ServletContext impl has this method even before 2.5 + Method m = context.getClass().getMethod("getContextPath", new Class[] {}); + contextPath = (String)m.invoke(context, new Object[] {}); + } catch (Exception e) { + logger.warning("Servlet level is: " + context.getMajorVersion() + "." + context.getMinorVersion()); + throw new IllegalStateException("'contextPath' init parameter must be set for pre-2.5 servlet container"); + } + } + logger.info("ContextPath: " + contextPath); + return contextPath; + } + + public static void stop(ServletContext servletContext) { + Node node = (Node) servletContext.getAttribute(ServletHostHelper.SCA_NODE_ATTRIBUTE); + if (node != null) { + node.stop(); + servletContext.setAttribute(ServletHostHelper.SCA_NODE_ATTRIBUTE, null); + } + } +} -- cgit v1.2.3