org.energyos.espi.datacustodian.web.VersionRESTController.java Source code

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Here is the source code for org.energyos.espi.datacustodian.web.VersionRESTController.java

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/*
 * Copyright 2013, 2014, 2015 EnergyOS.org
 *
 *    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 org.energyos.espi.datacustodian.web;

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

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

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping
public class VersionRESTController extends BaseController {

    /**
     * Handling GET request to retrieve details from MANIFEST.MF file
     * 
     * @return implementation details
     */
    @RequestMapping(value = "/about-version", method = RequestMethod.GET)
    public String getBuildNumber(HttpServletRequest request, ModelMap model) throws IOException {

        ServletContext context = request.getSession().getServletContext();
        InputStream manifestStream = context.getResourceAsStream("/META-INF/MANIFEST.MF");
        Manifest manifest = new Manifest(manifestStream);

        Map<String, String> aboutInfo = new HashMap<>();
        aboutInfo.put("Implementation-Vendor", manifest.getMainAttributes().getValue("Implementation-Vendor"));
        aboutInfo.put("Implementation-Title", manifest.getMainAttributes().getValue("Implementation-Title"));
        aboutInfo.put("Implementation-Version", manifest.getMainAttributes().getValue("Implementation-Version"));
        aboutInfo.put("Implementation-Jdk", manifest.getMainAttributes().getValue("Build-Jdk"));
        aboutInfo.put("Implementation-Build", manifest.getMainAttributes().getValue("Implementation-Build"));
        aboutInfo.put("Implementation-Build-Time",
                manifest.getMainAttributes().getValue("Implementation-Build-Time"));

        model.put("aboutInfo", aboutInfo);
        return "/about";

    }

}