diff options
author | antelder <antelder@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-26 07:46:08 +0000 |
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committer | antelder <antelder@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-26 07:46:08 +0000 |
commit | 6865c59e74f19ed6057d03583944b47abd6e036e (patch) | |
tree | 3324c11c7ca4f5ca12f15619ce30e9824e198480 /sca-java-2.x/branches/2.0-Beta1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppHelper.java | |
parent | 0d6d7922ed17cca55ec36ff2626d1080e76d6d13 (diff) |
Create branch for next release
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1027394 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/branches/2.0-Beta1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppHelper.java | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/sca-java-2.x/branches/2.0-Beta1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppHelper.java b/sca-java-2.x/branches/2.0-Beta1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppHelper.java new file mode 100644 index 0000000000..47fd852f57 --- /dev/null +++ b/sca-java-2.x/branches/2.0-Beta1/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppHelper.java @@ -0,0 +1,270 @@ +/* + * 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.io.IOException; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URL; +import java.util.Enumeration; + +import javax.servlet.ServletConfig; +import javax.servlet.ServletContext; +import javax.servlet.ServletException; + +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.UtilityExtensionPoint; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.host.http.ServletHostExtensionPoint; +import org.apache.tuscany.sca.node.Node; +import org.apache.tuscany.sca.node.NodeFactory; +import org.apache.tuscany.sca.node.configuration.NodeConfiguration; + +public class WebAppHelper { + private static final String ROOT = "/"; + // The prefix for the parameters in web.xml which configure the folders that contain SCA contributions + private static final String CONTRIBUTIONS = "contributions"; + // The prefix for the parameters in web.xml which configure the individual SCA contributions + private static final String CONTRIBUTION = "contribution"; + private static final String NODE_CONFIGURATION = "node.configuration"; + private static final String WEB_COMPOSITE = "/WEB-INF/web.composite"; + private static final String DOMAIN_URI = "domain.uri"; + private static final String NODE_URI = "node.uri"; + public static final String DOMAIN_NAME_ATTR = "org.apache.tuscany.sca.domain.name"; + public static final String SCA_NODE_ATTRIBUTE = Node.class.getName(); + private static NodeFactory factory; + private static WebAppServletHost host; + + private static URL getResource(ServletContext servletContext, String location) throws IOException { + URI uri = URI.create(location); + if (uri.isAbsolute()) { + return uri.toURL(); + } else { + String path = location; + if (!path.startsWith(ROOT)) { + path = ROOT + path; + } + URL url = servletContext.getResource(path); + if (url != null && url.getProtocol().equals("jndi")) { + //this is Tomcat case, we should use getRealPath + File warRootFile = new File(servletContext.getRealPath(path)); + return warRootFile.toURI().toURL(); + } else { + //this is Jetty case + return url; + } + } + } + + private static String[] parse(String listOfValues) { + if (listOfValues == null) { + return null; + } + return listOfValues.split("(\\s|,)+"); + } + + @SuppressWarnings("unchecked") + private static NodeConfiguration getNodeConfiguration(ServletContext servletContext) throws IOException, + URISyntaxException { + NodeConfiguration configuration = null; + String nodeConfigURI = (String)servletContext.getAttribute(NODE_CONFIGURATION); + if (nodeConfigURI != null) { + URL url = getResource(servletContext, nodeConfigURI); + configuration = factory.loadConfiguration(url.openStream(), url); + } else { + configuration = factory.createNodeConfiguration(); + Enumeration<String> names = servletContext.getAttributeNames(); + while (names.hasMoreElements()) { + String name = names.nextElement(); + if (name.equals(CONTRIBUTION) || name.startsWith(CONTRIBUTION + ".")) { + // We need to have a way to select one or more folders within the webapp as the contributions + String listOfValues = (String)servletContext.getAttribute(name); + if (listOfValues != null) { + for (String path : parse(listOfValues)) { + if ("".equals(path)) { + continue; + } + File f = new File(getResource(servletContext, path).toURI()); + configuration.addContribution(f.toURI().toURL()); + } + } + } else if (name.equals(CONTRIBUTIONS) || name.startsWith(CONTRIBUTIONS + ".")) { + String listOfValues = (String)servletContext.getAttribute(name); + if (listOfValues != null) { + for (String path : parse(listOfValues)) { + if ("".equals(path)) { + continue; + } + File f = new File(getResource(servletContext, path).toURI()); + if (f.isDirectory()) { + for (File n : f.listFiles()) { + configuration.addContribution(n.toURI().toURL()); + } + } else { + configuration.addContribution(f.toURI().toURL()); + } + } + } + } + } + + if (configuration.getContributions().isEmpty()) { + // TODO: Which path should be the default root + configuration.addContribution(getResource(servletContext, ROOT)); + } + URL composite = getResource(servletContext, WEB_COMPOSITE); + if (composite != null) { + configuration.getContributions().get(0).addDeploymentComposite(composite); + } + String nodeURI = (String)servletContext.getAttribute(NODE_URI); + if (nodeURI == null) { + nodeURI = new File(servletContext.getRealPath(ROOT)).getName(); + } + configuration.setURI(nodeURI); + String domainURI = (String)servletContext.getAttribute(DOMAIN_URI); + if (domainURI != null) { + configuration.setDomainURI(domainURI); + } else { + domainURI = servletContext.getInitParameter("org.apache.tuscany.sca.defaultDomainURI"); + if (domainURI != null) { + configuration.setDomainURI(getDomainName(domainURI)); + configuration.setDomainRegistryURI(domainURI); + } + } + } + return configuration; + } + + // TODO: Temp for now to get the old samples working till i clean up all the domain uri/name after the ML discussion. + private static String getDomainName(String configURI) { + String domainName; + if (configURI.startsWith("tuscany:vm:")) { + domainName = configURI.substring("tuscany:vm:".length()); + } else if (configURI.startsWith("tuscany:")) { + int i = configURI.indexOf('?'); + if (i == -1) { + domainName = configURI.substring("tuscany:".length()); + } else { + domainName = configURI.substring("tuscany:".length(), i); + } + } else { + domainName = configURI; + } + return domainName; + } + + public synchronized static ServletHost init(final ServletContext servletContext) { + if (host == null) { + try { + + String configValue = servletContext.getInitParameter("org.apache.tuscany.sca.config"); + if (configValue != null) { + factory = NodeFactory.newInstance(configValue); + } else { + factory = NodeFactory.newInstance(); + } + + // Add ServletContext as a utility + ExtensionPointRegistry registry = factory.getExtensionPointRegistry(); + UtilityExtensionPoint utilityExtensionPoint = registry.getExtensionPoint(UtilityExtensionPoint.class); + utilityExtensionPoint.addUtility(ServletContext.class, servletContext); + + ServletHostExtensionPoint servletHosts = registry.getExtensionPoint(ServletHostExtensionPoint.class); + servletHosts.setWebApp(true); + + // TODO: why are the init parameters copied to the attributes? + for (Enumeration<?> e = servletContext.getInitParameterNames(); e.hasMoreElements();) { + String name = (String)e.nextElement(); + String value = servletContext.getInitParameter(name); + servletContext.setAttribute(name, value); + } + + host = getServletHost(servletContext); + + } catch (ServletException e) { + throw new RuntimeException(e); + } + } + Node node = (Node)servletContext.getAttribute(SCA_NODE_ATTRIBUTE); + if (node == null) { + try { + node = createAndStartNode(servletContext); + } catch (ServletException e) { + throw new RuntimeException(e); + } + servletContext.setAttribute(SCA_NODE_ATTRIBUTE, node); + } + + return host; + } + + private static WebAppServletHost getServletHost(final ServletContext servletContext) throws ServletException { + WebAppServletHost host = getServletHost(factory); + host.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(); + } + }); + return host; + } + + private static WebAppServletHost getServletHost(NodeFactory factory) { + ExtensionPointRegistry registry = factory.getExtensionPointRegistry(); + return (WebAppServletHost)org.apache.tuscany.sca.host.http.ServletHostHelper.getServletHost(registry); + } + + private static Node createAndStartNode(final ServletContext servletContext) throws ServletException { + NodeConfiguration configuration; + try { + configuration = getNodeConfiguration(servletContext); + } catch (IOException e) { + throw new ServletException(e); + } catch (URISyntaxException e) { + throw new ServletException(e); + } + Node node = factory.createNode(configuration).start(); + return node; + } + + public static void stop(ServletContext servletContext) { + Node node = (Node)servletContext.getAttribute(SCA_NODE_ATTRIBUTE); + if (node != null) { + node.stop(); + servletContext.setAttribute(SCA_NODE_ATTRIBUTE, null); + } + } + + public static NodeFactory getNodeFactory() { + return factory; + } +} |