org.b3log.rhythm.processor.VersionProcessor.java Source code

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Here is the source code for org.b3log.rhythm.processor.VersionProcessor.java

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/*
 * Copyright (c) 2010-2015, b3log.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.b3log.rhythm.processor;

import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang.StringUtils;
import org.b3log.latke.logging.Level;
import org.b3log.latke.logging.Logger;
import org.b3log.latke.servlet.HTTPRequestContext;
import org.b3log.latke.servlet.HTTPRequestMethod;
import org.b3log.latke.servlet.annotation.RequestProcessing;
import org.b3log.latke.servlet.annotation.RequestProcessor;
import org.b3log.latke.servlet.renderer.JSONRenderer;
import org.b3log.latke.util.Strings;
import org.b3log.rhythm.model.Solo;
import org.b3log.rhythm.util.Rhythms;
import org.json.JSONObject;

/**
 * Version processor.
 *
 * @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
 * @version 1.1.0.5, Oct 17, 2014
 * @since 0.1.4
 */
@RequestProcessor
public class VersionProcessor {

    /**
     * Logger.
     */
    private static final Logger LOGGER = Logger.getLogger(VersionProcessor.class.getName());

    /**
     * Gets the latest version of the B3log Solo.
     *
     * @param context the specified context
     * @throws Exception exception
     */
    @RequestProcessing(value = { "/version/solo/latest/*", "/version/solo/latest" }, method = HTTPRequestMethod.GET)
    public void getLatestSoloVersion(final HTTPRequestContext context) throws Exception {
        final HttpServletRequest request = context.getRequest();
        String callbackFuncName = request.getParameter("callback");
        if (Strings.isEmptyOrNull(callbackFuncName)) {
            callbackFuncName = "callback";
        }

        final JSONObject jsonObject = new JSONObject();

        final JSONRenderer renderer = new JSONRenderer();
        context.setRenderer(renderer);

        renderer.setCallback(callbackFuncName); // Sets JSONP
        renderer.setJSONObject(jsonObject);

        String currentVersion = request.getRequestURI();
        currentVersion = StringUtils.substringAfter(currentVersion, "/version/solo/latest");
        if (currentVersion.startsWith("/")) {
            currentVersion = currentVersion.substring(1);
        }

        final String latestVersion = Rhythms.getLatestSoloVersion(currentVersion);

        LOGGER.log(Level.DEBUG, "Version[client={0}, latest={1}]", new Object[] { currentVersion, latestVersion });

        jsonObject.put(Solo.SOLO_VERSION, latestVersion);

        jsonObject.put(Solo.SOLO_DOWNLOAD, Rhythms.LATEST_SOLO_DL_URL);
    }

    /**
     * Gets the latest version of the B3log Wide.
     *
     * @param context the specified context
     * @throws Exception exception
     */
    @RequestProcessing(value = { "/version/wide/latest/*", "/version/wide/latest" }, method = HTTPRequestMethod.GET)
    public void getLatestWideVersion(final HTTPRequestContext context) throws Exception {
        final HttpServletRequest request = context.getRequest();
        String callbackFuncName = request.getParameter("callback");
        if (Strings.isEmptyOrNull(callbackFuncName)) {
            callbackFuncName = "callback";
        }

        final JSONObject jsonObject = new JSONObject();

        final JSONRenderer renderer = new JSONRenderer();
        context.setRenderer(renderer);

        renderer.setCallback(callbackFuncName); // Sets JSONP
        renderer.setJSONObject(jsonObject);

        String currentVersion = request.getRequestURI();
        currentVersion = StringUtils.substringAfter(currentVersion, "/version/wide/latest");
        if (currentVersion.startsWith("/")) {
            currentVersion = currentVersion.substring(1);
        }

        final String latestVersion = Rhythms.getLatestWideVersion(currentVersion);

        LOGGER.log(Level.DEBUG, "Version[client={0}, latest={1}]", new Object[] { currentVersion, latestVersion });

        jsonObject.put("wideVersion", latestVersion);
        jsonObject.put("wideDownload", Rhythms.LATEST_WIDE_DL_URL);
    }
}