org.hyperic.hq.measurement.server.session.ReportStatsCollector.java Source code

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Here is the source code for org.hyperic.hq.measurement.server.session.ReportStatsCollector.java

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/*
 * NOTE: This copyright does *not* cover user programs that use Hyperic
 * program services by normal system calls through the application
 * program interfaces provided as part of the Hyperic Plug-in Development
 * Kit or the Hyperic Client Development Kit - this is merely considered
 * normal use of the program, and does *not* fall under the heading of
 * "derived work".
 *
 * Copyright (C) [2004-2010], VMware, Inc.
 * This file is part of Hyperic.
 *
 * Hyperic is free software; you can redistribute it and/or modify
 * it under the terms version 2 of the GNU General Public License as
 * published by the Free Software Foundation. This program is distributed
 * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 */
package org.hyperic.hq.measurement.server.session;

import java.text.DateFormat;
import java.util.Date;
import java.util.Properties;

import javax.annotation.PostConstruct;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hyperic.hq.common.DiagnosticObject;
import org.hyperic.hq.common.DiagnosticsLogger;
import org.hyperic.hq.common.shared.ServerConfigManager;
import org.hyperic.util.PrintfFormat;
import org.hyperic.util.stats.StatsCollector;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class ReportStatsCollector {

    private StatsCollector stats;
    private ServerConfigManager serverConfigManager;
    private static final String PROP_REPSTATS_SIZE = "REPORT_STATS_SIZE";
    private final Log log = LogFactory.getLog(ReportStatsCollector.class);

    @Autowired
    public ReportStatsCollector(DiagnosticsLogger diagnosticsLogger, ServerConfigManager serverConfigManager) {
        diagnosticsLogger.addDiagnosticObject(new DiagnosticObject() {
            public String getName() {
                return "Metric Reports Stats";
            }

            public String getShortName() {
                return "metricReportsStats";
            }

            public String toString() {
                return "ReportStatsCollector";
            }

            public String getStatus() {
                DateFormat fmt = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG);
                long start = getCollector().getOldestTime();
                long end = getCollector().getNewestTime();
                long now = System.currentTimeMillis();
                double nMetrics = getCollector().valPerTimestamp(now) * 60;
                PrintfFormat pfmt = new PrintfFormat("%.3f");
                return "Metric Report Data\n" + "    Start:     " + fmt.format(new Date(start)) + "\n"
                        + "    End:       " + fmt.format(new Date(end)) + "\n" + "    Samples:   "
                        + getCollector().getSize() + "\n" + "    Rate:      " + pfmt.sprintf(nMetrics)
                        + " kMetrics / min";
            }

            public String getShortStatus() {
                return getStatus();
            }
        });
        this.serverConfigManager = serverConfigManager;
    }

    @PostConstruct
    public void initialize() {
        Properties cfg = new Properties();

        try {
            cfg = serverConfigManager.getConfig();
        } catch (Exception e) {
            log.warn("Error getting server config", e);
        }

        int repSize = Integer.parseInt(cfg.getProperty(PROP_REPSTATS_SIZE, "1000"));

        stats = new StatsCollector(repSize);
    }

    public StatsCollector getCollector() {
        return stats;
    }

    public String toString() {
        return "ReportStatsCollector";
    }
}