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author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:08:02 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:08:02 +0000 |
commit | e0ff67c0b32813ea48734c770a5ffc1952644e29 (patch) | |
tree | f36cc42aee12d0f41c8ddd1f20b4e67364283352 /sca-java-1.x/branches/sca-java-1.3.1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java | |
parent | 89d72264d0af4c65c9bf0b7a6f823f13d69162aa (diff) |
Moving 1.x branches
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835128 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-java-1.x/branches/sca-java-1.3.1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-1.3.1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-1.3.1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java b/sca-java-1.x/branches/sca-java-1.3.1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java new file mode 100644 index 0000000000..97dc6bc622 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.3.1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java @@ -0,0 +1,331 @@ +/* + * 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.File; +import java.lang.reflect.Method; +import java.net.InetAddress; +import java.net.MalformedURLException; +import java.net.URI; +import java.net.URL; +import java.net.UnknownHostException; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; +import java.util.logging.Logger; + +import javax.naming.InitialContext; +import javax.naming.NamingException; +import javax.servlet.RequestDispatcher; +import javax.servlet.Servlet; +import javax.servlet.ServletConfig; +import javax.servlet.ServletContext; +import javax.servlet.ServletException; + +import org.apache.tuscany.sca.host.embedded.SCADomain; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.host.http.ServletMappingException; + +/** + * ServletHost implementation for use in a webapp environment. + * + * FIXME: using a static singleton seems a big hack but how should it be shared? + * Need some way for TuscanyServlet to pull it out. + * + * @version $Rev$ $Date$ + */ +public class WebAppServletHost implements ServletHost { + private static final Logger logger = Logger.getLogger(WebAppServletHost.class.getName()); + + public static final String SCA_DOMAIN_ATTRIBUTE = "org.apache.tuscany.sca.SCADomain"; + + private static final WebAppServletHost instance = new WebAppServletHost(); + + private Map<String, Servlet> servlets; + private SCADomain scaDomain; + private String contextPath = "/"; + private int defaultPortNumber = 8080; + private String contributionRoot; + + private WebAppServletHost() { + servlets = new HashMap<String, Servlet>(); + } + + public void setDefaultPort(int port) { + defaultPortNumber = port; + } + + public int getDefaultPort() { + return defaultPortNumber; + } + + public void addServletMapping(String suri, Servlet servlet) throws ServletMappingException { + URI pathURI = URI.create(suri); + + // Make sure that the path starts with a / + suri = pathURI.getPath(); + if (!suri.startsWith("/")) { + suri = '/' + suri; + } + + if (!suri.startsWith(contextPath)) { + suri = contextPath + suri; + } + + // In a webapp just use the given path and ignore the host and port + // as they are fixed by the Web container + servlets.put(suri, servlet); + + logger.info("Added Servlet mapping: " + suri); + } + + public Servlet removeServletMapping(String suri) throws ServletMappingException { + URI pathURI = URI.create(suri); + + // Make sure that the path starts with a / + suri = pathURI.getPath(); + if (!suri.startsWith("/")) { + suri = '/' + suri; + } + + if (!suri.startsWith(contextPath)) { + suri = contextPath + suri; + } + + // In a webapp just use the given path and ignore the host and port + // as they are fixed by the Web container + return servlets.remove(suri); + } + + public Servlet getServletMapping(String suri) throws ServletMappingException { + if (!suri.startsWith("/")) { + suri = '/' + suri; + } + + if (!suri.startsWith(contextPath)) { + suri = contextPath + suri; + } + + // Get the Servlet mapped to the given path + Servlet servlet = servlets.get(suri); + return servlet; + } + + public URL getURLMapping(String suri) throws ServletMappingException { + URI uri = URI.create(suri); + + // Get the URI scheme and port + String scheme = uri.getScheme(); + if (scheme == null) { + scheme = "http"; + } + int portNumber = uri.getPort(); + if (portNumber == -1) { + portNumber = defaultPortNumber; + } + + // Get the host + String host; + try { + host = InetAddress.getLocalHost().getHostName(); + } catch (UnknownHostException e) { + host = "localhost"; + } + + // Construct the URL + String path = uri.getPath(); + if (!path.startsWith("/")) { + path = '/' + path; + } + + if (contextPath != null && !path.startsWith(contextPath)) { + path = contextPath + path; + } + + URL url; + try { + url = new URL(scheme, host, portNumber, path); + } catch (MalformedURLException e) { + throw new ServletMappingException(e); + } + return url; + } + + public RequestDispatcher getRequestDispatcher(String suri) throws ServletMappingException { + + // Make sure that the path starts with a / + if (!suri.startsWith("/")) { + suri = '/' + suri; + } + + suri = contextPath + suri; + + // Get the Servlet mapped to the given path + Servlet servlet = servlets.get(suri); + if (servlet != null) { + return new WebAppRequestDispatcher(suri, servlet); + } + + for (Map.Entry<String, Servlet> entry : servlets.entrySet()) { + String servletPath = entry.getKey(); + if (servletPath.endsWith("*")) { + servletPath = servletPath.substring(0, servletPath.length() - 1); + if (suri.startsWith(servletPath)) { + // entry key is contextPath/servletPath, WebAppRequestDispatcher only wants servletPath + return new WebAppRequestDispatcher(entry.getKey().substring(contextPath.length()), entry.getValue()); + } else { + if ((suri + "/").startsWith(servletPath)) { + return new WebAppRequestDispatcher(entry.getKey().substring(contextPath.length()), entry.getValue()); + } + } + } + } + + // No Servlet found + return null; + } + + public static WebAppServletHost getInstance() { + return instance; + } + + public void init(ServletConfig config) throws ServletException { + + ServletContext servletContext = config.getServletContext(); + if (servletContext.getAttribute(SCA_DOMAIN_ATTRIBUTE) == null) { + initContextPath(config); + String domainURI = "http://localhost/" + contextPath; + contributionRoot = getContributionRoot(servletContext); + // logger.info("Contribution: " + contributionRoot); + System.setProperty(SCADomain.class.getName(), WebSCADomain.class.getName()); + this.scaDomain = SCADomain.newInstance(domainURI, contributionRoot); + servletContext.setAttribute(SCA_DOMAIN_ATTRIBUTE, scaDomain); + } + + // Initialize the registered Servlets + for (Servlet servlet : servlets.values()) { + servlet.init(config); + } + } + + protected 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.toURL().toString(); + } else { + //this is Jetty case + contributionRoot = rootURL.toString(); + } + + } catch (MalformedURLException mf) { + //ignore, pass null + } + } + + 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") + public void initContextPath(ServletConfig config) { + + if (Collections.list(config.getInitParameterNames()).contains("contextPath")) { + contextPath = config.getInitParameter("contextPath"); + } else { + // The getContextPath() is introduced since Servlet 2.5 + ServletContext context = config.getServletContext(); + 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); + } + + void destroy() { + + // Destroy the registered Servlets + for (Servlet servlet : servlets.values()) { + servlet.destroy(); + } + + // Close the SCA domain + if (scaDomain != null) { + scaDomain.close(); + if (scaDomain instanceof WebSCADomain) { + ((WebSCADomain)scaDomain).destroy(); + } + } + } + + public String getContextPath() { + return contextPath; + } + + public void setContextPath(String path) { + // if (!contextPath.equals(path)) { + // throw new IllegalArgumentException("invalid context path for webapp, existing context path: " + contextPath + " new contextPath: " + path); + // } + } + + /** + * TODO: How context paths work is still up in the air so for now + * this hacks in a path that gets some samples working + * can't use setContextPath as NodeImpl calls that later + */ + public void setContextPath2(String path) { + if (path != null && path.length() > 0) { + this.contextPath = path; + } + } + + public String getContributionRoot() { + return contributionRoot; + } +} |