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brianR |
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/*
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* Copyright 2012 Brian Rosenberger (Brutex Network)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.brutex.xservices.util.cache;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.List;
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import java.util.concurrent.ExecutorService;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.ws.rs.core.GenericEntity;
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import javax.ws.rs.core.Response;
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import org.apache.log4j.Logger;
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import net.brutex.xservices.types.scm.ModuleType;
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import net.brutex.xservices.ws.rs.CVSInfoImpl;
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/**
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* Perform Caching actions on the CVS Info actions
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*
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* @author Brian Rosenberger, bru(at)brutex.de
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* @since 0.5.0-200120825
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*
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*/
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public class CacheServlet extends HttpServlet {
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private final Logger logger = Logger.getLogger(CacheServlet.class);
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List<File> configfiles = new ArrayList<File>();;
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int cacheinterval;
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/*
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* (non-Javadoc)
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*
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* @see javax.servlet.GenericServlet#init()
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*/
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@Override
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public void init() throws ServletException {
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super.init();
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ExecutorService executor = (ExecutorService) getServletContext()
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.getAttribute(CacheExecutorService.EXECUTOR_NAME);
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Enumeration<String> attributes = getServletContext()
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.getInitParameterNames();
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while (attributes.hasMoreElements()) {
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String name = attributes.nextElement();
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if (name.startsWith("cvs-config-")) {
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String configfile = (String) getServletContext()
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.getInitParameter(name);
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logger.info("CVS configuration file: " + configfile);
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this.configfiles.add(new File(configfile));
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}
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}
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cacheinterval = 15;
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try {
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cacheinterval = Integer.parseInt((String) getServletContext()
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.getInitParameter("cvs-cache-interval"));
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} catch (NumberFormatException e) {
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logger.debug("Could not read parameter 'cvs-cache-interval' from web.xml. Using default value '"+cacheinterval+"' minutes");
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}
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logger.info("CacheServlet set to " + cacheinterval + " minutes interval.");
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executor.submit(new Runnable() {
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boolean isInterrupted = false;
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@Override
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public void run() {
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while (!isInterrupted) {
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for (File configfile : configfiles) {
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CVSInfoImpl instance = new CVSInfoImpl();
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logger.info("Caching modules from " + configfile.toURI().toString());
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Response response = instance.getModules(null,
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configfile, true);
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List<ModuleType> list = (List<ModuleType>) ((GenericEntity) response
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.getEntity()).getEntity();
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if (list.size() == 0)
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list.add(new ModuleType("", "", "", ""));
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for (ModuleType t : list) {
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try {
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//Extra sleep
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Thread.currentThread().sleep(5000);
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} catch (InterruptedException e) {
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isInterrupted = true;
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break;
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}
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logger.info("Caching module '" + t.getName()+"'");
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instance.getRepositoryFiles(null, configfile, t.getName(), true, true);
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}
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}
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try {
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logger.debug("Now sleeping for '"+cacheinterval+"' minutes");
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Thread.currentThread().sleep(cacheinterval * 60000);
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logger.debug("Waking up after '"+cacheinterval+"' minutes of sleep");
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} catch (InterruptedException e) {
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isInterrupted = true;
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break;
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}
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}
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}
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});
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}
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}
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