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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 static org.apache.tuscany.sca.domain.manager.impl.DomainManagerUtil.compositeKey;
import static org.apache.tuscany.sca.domain.manager.impl.DomainManagerUtil.compositeQName;
import static org.apache.tuscany.sca.domain.manager.impl.DomainManagerUtil.contributionURI;
import static org.apache.tuscany.sca.domain.manager.impl.DomainManagerUtil.nodeURI;
import java.io.IOException;
import java.net.URI;
import java.net.URLDecoder;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.namespace.QName;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.tuscany.sca.data.collection.Entry;
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 component that provides a quick start path for a
* composite in a contribution.
*
* @version $Rev$ $Date$
*/
@Scope("COMPOSITE")
@Service(interfaces={Servlet.class})
public class QuickStartServiceImpl extends HttpServlet {
private static final long serialVersionUID = -3477992129462720901L;
private static final Logger logger = Logger.getLogger(QuickStartServiceImpl.class.getName());
@Reference
public LocalItemCollection contributionCollection;
@Reference
public LocalItemCollection deployableCollection;
@Reference
public LocalItemCollection domainCompositeCollection;
@Reference
public LocalItemCollection cloudCollection;
@Reference
public LocalItemCollection processCollection;
/**
* Initialize the component.
*/
@Init
public void initialize() throws ParserConfigurationException {
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
// Get the request path
String path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8");
if (path.startsWith("/")) {
path = path.substring(1);
}
// Get the request parameters
String contributionURI = request.getParameter("contribution");
String contributionLocation = request.getParameter("location");
String compositeURI = request.getParameter("composite");
String start = request.getParameter("start");
logger.info("Composite Quick Start.");
logger.info("Contribution URI: " + contributionURI);
logger.info("Contribution location: " + contributionLocation);
logger.info("Composite URI: " + compositeURI);
// Look for the contribution in the workspace
Entry<String, Item>[] contributionEntries = contributionCollection.getAll();
Entry<String, Item> contributionEntry = null;
for (Entry<String, Item> entry: contributionEntries) {
if (entry.getKey() != null &&
contributionURI.equals(entry.getKey())) {
contributionEntry = entry;
break;
}
}
// Add the contribution if necessary
if (contributionEntry == null) {
Item item = new Item();
item.setLink(contributionLocation);
contributionCollection.post(contributionURI, item);
}
// Look for the specified deployable composite in the contribution
String compositeKey = null;
Entry<String, Item>[] deployableEntries = deployableCollection.query("contribution=" + contributionURI);
for (Entry<String, Item> entry: deployableEntries) {
Item item = entry.getData();
String compositeFileName = compositeURI.substring(compositeURI.lastIndexOf("/") + 1);
if (contributionURI.equals(contributionURI(entry.getKey())) &&
(item.getAlternate().endsWith(compositeURI) ||
item.getAlternate().endsWith(compositeFileName))) {
compositeKey = entry.getKey();
break;
}
}
if (compositeKey == null) {
logger.info("Composite not found");
response.sendError(HttpServletResponse.SC_NOT_FOUND, compositeURI);
return;
}
// Look for the deployable composite in the domain composite
try {
domainCompositeCollection.get(compositeKey);
} catch (NotFoundException e) {
// Add the deployable composite to the domain composite
Item item = new Item();
domainCompositeCollection.post(compositeKey, item);
}
// Check if the deployable composite is already assigned a node
Entry<String, Item>[] nodeEntries = cloudCollection.getAll();
String nodeName = null;
for (Entry<String, Item> entry: nodeEntries) {
Item item = entry.getData();
String related = item.getRelated();
if (related != null) {
int c = related.indexOf("composite:");
related = related.substring(c);
if (compositeKey.equals(related)) {
nodeName = compositeQName(entry.getKey()).getLocalPart();
}
}
}
// Create a new node for the composite if necessary
if (nodeName == null) {
// Construct node name and key
QName compositeName = compositeQName(compositeKey);
nodeName = compositeName.getLocalPart() + "Node";
String nodeKey = compositeKey("http://tuscany.apache.org/cloud", new QName("http://tuscany.apache.org/cloud", nodeName));
// Find a free node port
Set<Integer> nodePorts = new HashSet<Integer>();
for (Entry<String, Item> entry: nodeEntries) {
Item item = entry.getData();
String uri = nodeURI(item.getContents());
if (uri != null) {
URI u = URI.create(uri);
int port = u.getPort();
if (port != -1) {
nodePorts.add(port);
}
}
}
String nodeURI = null;
for (int port = 8100; port<8200; port++) {
if (!nodePorts.contains(port)) {
nodeURI = "http://localhost:" + port;
break;
}
}
if (nodeURI == null) {
throw new RuntimeException("Couldn't find a free port for new node: " + nodeName);
}
// Build the entry describing the node
Item item = new Item();
String content =
"<composite xmlns=\"http://www.osoa.org/xmlns/sca/1.0\"\n" +
" xmlns:t=\"http://tuscany.apache.org/xmlns/sca/1.0\"\n" +
" targetNamespace=\"http://tuscany.apache.org/cloud\"\n" +
" xmlns:c=\"" + compositeName.getNamespaceURI() + "\"\n" +
" name=\"" + nodeName + "\">\n" +
"\n" +
" <component name=\"" + nodeName + "\">\n" +
" <t:implementation.node uri=\"" + contributionURI + "\" composite=\"c:" + compositeName.getLocalPart() + "\"/>\n" +
" <service name=\"Node\">\n" +
" <binding.sca uri=\"" + nodeURI + "\"/>\n" +
" <binding.ws uri=\"" + nodeURI + "\"/>\n" +
" <t:binding.http uri=\"" + nodeURI + "\"/>\n" +
" <t:binding.jsonrpc uri=\"" + nodeURI + "\"/>\n" +
" <t:binding.atom uri=\"" + nodeURI + "\"/>\n" +
" </service>\n" +
" </component>\n" +
"</composite>";
item.setContents(content);
// Create the new node
cloudCollection.post(nodeKey, item);
}
// Finally, start the node
if ("true".equals(start)) {
processCollection.post(nodeName, new Item());
}
response.getWriter().print("<html><body>Node <span id=\"node\">" + nodeName + "</span> OK.</body></html>");
} catch (Exception e) {
logger.log(Level.SEVERE, "Could not start composite", e);
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.toString());
}
}
}
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