fm.last.citrine.web.AdminController.java Source code

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Here is the source code for fm.last.citrine.web.AdminController.java

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/*
 * Copyright 2010 Last.fm
 *
 *  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 fm.last.citrine.web;

import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.Attributes;
import java.util.jar.Manifest;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
import org.springframework.web.servlet.view.RedirectView;

import fm.last.citrine.scheduler.SchedulerManager;
import fm.last.citrine.service.TaskManager;

/**
 * Controller for the admin page.
 */
public class AdminController extends MultiActionController {

    private static Logger log = Logger.getLogger(AdminController.class);

    private TaskManager taskManager;
    private SchedulerManager schedulerManager;

    private String buildVersion;

    private String buildDateTime;

    @Override
    protected void initServletContext(ServletContext servletContext) {
        super.initServletContext(servletContext);
        try {
            InputStream inputStream = servletContext.getResourceAsStream("/META-INF/MANIFEST.MF");
            Manifest manifest = new Manifest(inputStream);
            Attributes attributes = manifest.getMainAttributes();
            buildVersion = attributes.getValue("Build-Version");
            buildDateTime = attributes.getValue("Build-DateTime");
            log.info("Citrine Build-Version: " + attributes.getValue("Build-Version"));
            log.info("Citrine Build-DateTime: " + attributes.getValue("Build-DateTime"));
        } catch (Exception e) {
            log.error("Error determining build version", e);
        }
    }

    public ModelAndView list(HttpServletRequest request, HttpServletResponse response) throws Exception {
        Map<String, Object> model = new HashMap<String, Object>();
        model.put("buildVersion", buildVersion);
        model.put("buildDateTime", buildDateTime);
        model.put("currentTasks", taskManager.getCurrentlyRunningTasks());
        model.put("schedulerStatus", schedulerManager.getStatus());
        return new ModelAndView("admin", model);
    }

    public ModelAndView prepareForShutdown(HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        schedulerManager.prepareForShutdown();
        return new ModelAndView(new RedirectView("admin.do"));
    }

    public void setTaskManager(TaskManager taskManager) {
        this.taskManager = taskManager;
    }

    public void setSchedulerManager(SchedulerManager schedulerManager) {
        this.schedulerManager = schedulerManager;
    }

}