com.mnt.base.console.WebJettyController.java Source code

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Here is the source code for com.mnt.base.console.WebJettyController.java

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/**
 * $Revision: 1.0
 * $Date: 2013-5-21
 *
 * Copyright (C) 2013-2020 MNT. All rights reserved.
 *
 * Licensed 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 com.mnt.base.console;

import java.io.File;
import java.util.EnumSet;

import javax.servlet.DispatcherType;
import javax.servlet.Filter;
import javax.servlet.http.HttpServlet;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.jetty.servlet.FilterHolder;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.webapp.WebAppContext;

import com.mnt.base.util.BaseConfiguration;
import com.mnt.base.util.CommonUtil;
import com.mnt.base.web.filter.WebAccessRouterFilter;

/**
 * To make the server works, need to address the bean with id: webActionControllerManager, @see WebAccessRouterServlet
 * 
 * Allow the extra servlet map configured as key: servletConfMap.
 * 
 * All beans set in @see BeanContext
 * 
 * All server properties please refer to the config phase @(jetty server related configurations) in server.conf
 * 
 * @author Peng Peng
 * #date 2013-8-22
 *
 */
public final class WebJettyController extends AbstractJettyController implements Runnable {

    private static final Log log = LogFactory.getLog(WebJettyController.class);

    private static WebJettyController instance = new WebJettyController();

    private static final String DEFAULT_WEB_ROOT_PATH = "web";

    private WebJettyController() {
        init();
    }

    protected void init() {
        log.info("Prepare to startup the Jetty Web Server...");

        super.init();

        String webRootPath = BaseConfiguration.getProperty("web_root_path");

        if (CommonUtil.isEmpty(webRootPath)) {
            webRootPath = DEFAULT_WEB_ROOT_PATH;
        }

        final WebAppContext webappContext = new WebAppContext(BaseConfiguration.getServerHome(true) + webRootPath,
                BaseConfiguration.getServerContextPath());
        webappContext.setParentLoaderPriority(true);
        File tmpFolder = new File(BaseConfiguration.getServerHome() + "tmp");
        if (!tmpFolder.exists()) {
            tmpFolder.mkdirs();
        }
        webappContext.setTempDirectory(tmpFolder);
        webappContext.setAttribute("javax.servlet.context.tempdir", tmpFolder);

        jettyServer.setHandler(webappContext);

        super.setupExternalConf(new ExternalConfSetter() {

            @Override
            public void addServlet(Class<HttpServlet> servletClass, String pathSpec) throws Exception {
                HttpServlet servlet = (HttpServlet) (servletClass.newInstance());
                webappContext.addServlet(new ServletHolder(servlet), pathSpec);
            }

            @Override
            public void addFilter(Class<Filter> filterClass, String pathSpec) throws Exception {
                webappContext.addFilter(filterClass, pathSpec, EnumSet.of(DispatcherType.REQUEST));
            }
        });
        // be end of the previous setting
        webappContext.addFilter(new FilterHolder(new WebAccessRouterFilter()), "/*",
                EnumSet.of(DispatcherType.REQUEST));
    }

    @Override
    protected String contextPath() {
        return BaseConfiguration.getWebServerContextPath();
    }

    @Override
    public void run() {
        try {
            jettyServer.start();
            log.info("Jetty Web Server is started and running!");
            jettyServer.join();
        } catch (Exception e) {
            log.error("fail to startup the jetty web server.", e);
        }
    }

    /**
     * Start the jetty server with the pre-configured properties.
     *   
     */
    public static void startServer() {
        instance.start();
    }

    /**
     * Stop the jetty server.
     */
    public static void stopServer() {
        instance.stop();
    }

    /**
     * Get the jetty server state string.
     * 
     * @return
     */
    public static String getServerState() {
        return instance.jettyServer.getState();
    }
}