org.b3log.symphony.processor.StatusProcessor.java Source code

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Here is the source code for org.b3log.symphony.processor.StatusProcessor.java

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/*
 * Copyright (c) 2012-2016, b3log.org & hacpai.com & fangstar.com
 *
 * 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.symphony.processor;

import org.b3log.symphony.processor.channel.ArticleChannel;
import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.b3log.latke.Keys;
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.symphony.SymphonyServletListener;
import org.b3log.symphony.model.Common;
import org.b3log.symphony.processor.channel.ArticleListChannel;
import org.b3log.symphony.service.OptionQueryService;
import org.b3log.symphony.util.Symphonys;
import org.json.JSONObject;

/**
 * Running status processor.
 *
 * <p>
 * <ul>
 * <li>Report running status (/status), GET</li>
 * </ul>
 * </p>
 *
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
 * @version 1.1.0.1, Jan 2, 2016
 * @since 1.3.0
 */
@RequestProcessor
public class StatusProcessor {

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

    /**
     * Option query service.
     */
    @Inject
    private OptionQueryService optionQueryService;

    /**
     * Reports running status.
     *
     * @param context the specified context
     * @param request the specified request
     * @param response the specified response
     * @throws Exception exception
     */
    @RequestProcessing(value = "/status", method = HTTPRequestMethod.GET)
    public void reportStatus(final HTTPRequestContext context, final HttpServletRequest request,
            final HttpServletResponse response) throws Exception {
        final String key = Symphonys.get("keyOfSymphony");
        if (!key.equals(request.getParameter("key"))) {
            response.sendError(HttpServletResponse.SC_FORBIDDEN);

            return;
        }

        final JSONObject ret = new JSONObject();

        context.renderJSON(ret);

        ret.put(Common.ONLINE_VISITOR_CNT, optionQueryService.getOnlineVisitorCount());
        ret.put(Common.ARTICLE_CHANNEL_CNT, ArticleChannel.SESSIONS.size());
        ret.put(Common.ARTICLE_LIST_CHANNEL_CNT, ArticleListChannel.SESSIONS.size());

        final JSONObject memory = new JSONObject();
        ret.put("memory", memory);

        final int mb = 1024 * 1024;
        final Runtime runtime = Runtime.getRuntime();
        memory.put("totoal", runtime.totalMemory() / mb);
        memory.put("free", runtime.freeMemory() / mb);
        memory.put("used", (runtime.totalMemory() - runtime.freeMemory()) / mb);
        memory.put("max", runtime.maxMemory() / mb);

        LOGGER.info(ret.toString(SymphonyServletListener.JSON_PRINT_INDENT_FACTOR));
        ret.put(Keys.STATUS_CODE, true);
    }
}