/* * 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.implementation.web; import java.io.IOException; import java.io.OutputStream; import java.io.UnsupportedEncodingException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.tuscany.sca.assembly.ComponentReference; /** * Servlet that handles the GET request for the componentContext.js script * * The script is generated by calling ScriptProcessors to output the code * for the SCA references, properties etc. */ public class ComponentContextServlet extends HttpServlet { private static final long serialVersionUID = 1L; protected static final String HEADER = "/** --- Apache Tuscany componentContext.js --- */\n"; protected static final String FOOTER = "/** --- Apache Tuscany componentContext.js EOF --- */\n"; public static final String COMPONENT_CONTEXT_SCRIPT_URI = "org.apache.tuscany.sca.componentContext.js"; @Override public void doGet(HttpServletRequest req, HttpServletResponse response) throws IOException { response.setContentType("text/plain;charset=utf-8"); OutputStream out = response.getOutputStream(); doScriptInit(out); doScriptReferences(out); out.write(FOOTER.getBytes("UTF-8")); out.flush(); out.close(); } /** * Calls each ContextScriptProcessor once to insert any required initilization code into componentContext.js */ protected void doScriptInit(OutputStream out) throws IOException, UnsupportedEncodingException { out.write(HEADER.getBytes("UTF-8")); for (ContextScriptProcessor csp : WebSingleton.INSTANCE.getContextScriptProcessors()) { csp.scriptInit(out); } } /** * Calls each ContextScriptProcessor for each SCA reference to insert code for the reference into componentContext.js */ protected void doScriptReferences(OutputStream out) throws IOException, UnsupportedEncodingException { out.write("// SCA References\n".getBytes("UTF-8")); for (ComponentReference cr : WebSingleton.INSTANCE.getRuntimeComponent().getReferences()) { String ref = "// SCA Reference " + cr.getName() + "\n"; out.write(ref.getBytes("UTF-8")); for (ContextScriptProcessor csp : WebSingleton.INSTANCE.getContextScriptProcessors()) { csp.scriptReference(cr, out); } } out.write("\n// SCA References end.\n".getBytes("UTF-8")); } /** * Calls each ContextScriptProcessor for each SCA property to insert code for the property into componentContext.js */ protected void doScriptProperties(OutputStream out) throws IOException, UnsupportedEncodingException { // TODO: support properties } }