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+/*
+ * 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.domain.manager.impl;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.URLConnection;
+import java.net.URLDecoder;
+import java.util.logging.Logger;
+
+import javax.servlet.Servlet;
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.data.collection.Item;
+import org.apache.tuscany.sca.data.collection.LocalItemCollection;
+import org.apache.tuscany.sca.data.collection.NotFoundException;
+import org.osoa.sca.annotations.Init;
+import org.osoa.sca.annotations.Reference;
+import org.osoa.sca.annotations.Scope;
+import org.osoa.sca.annotations.Service;
+
+/**
+ * Implementation of a service that returns the source of a deployable composite.
+ *
+ * @version $Rev$ $Date$
+ */
+@Scope("COMPOSITE")
+@Service(Servlet.class)
+public class DeployableCompositeServiceImpl extends HttpServlet implements Servlet {
+ private static final long serialVersionUID = -3477992129462720902L;
+
+ private static final Logger logger = Logger.getLogger(DeployableCompositeServiceImpl.class.getName());
+
+ @Reference
+ public DomainManagerConfiguration domainManagerConfiguration;
+
+ @Reference
+ public LocalItemCollection deployableCollection;
+
+ /**
+ * Initialize the component.
+ */
+ @Init
+ public void initialize() throws ParserConfigurationException {
+
+ ExtensionPointRegistry extensionPoints = domainManagerConfiguration.getExtensionPoints();
+ }
+
+ @Override
+ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+ // Expect a key in the form
+ // composite:contributionURI;namespace;localName
+ // and return the corresponding source file
+
+ // Get the request path
+ String path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8");
+ String key = path.startsWith("/")? path.substring(1) : path;
+ logger.fine("get " + key);
+
+ // Get the item describing the composite
+ Item item;
+ try {
+ item = deployableCollection.get(key);
+ } catch (NotFoundException e) {
+ response.sendError(HttpServletResponse.SC_NOT_FOUND, key);
+ return;
+ }
+
+ // Redirect if there is no composite file
+ String uri = item.getAlternate();
+ if (uri == null) {
+ response.sendRedirect("/composite-generated/" + key);
+ return;
+ }
+
+ // Read the composite file and write to response
+ InputStream is;
+ try {
+ URLConnection connection = new URL(uri).openConnection();
+ connection.setUseCaches(false);
+ connection.connect();
+ is = connection.getInputStream();
+ } catch (FileNotFoundException ex) {
+ response.sendError(HttpServletResponse.SC_NOT_FOUND, key);
+ return;
+ }
+
+ response.setContentType("text/xml");
+ ServletOutputStream os = response.getOutputStream();
+ byte[] buffer = new byte[4096];
+ for (;;) {
+ int n = is.read(buffer);
+ if (n < 0) {
+ break;
+ }
+ os.write(buffer, 0, n);
+ }
+ is.close();
+ os.flush();
+ }
+
+}