src/org/sonews/util/Stats.java
author cli
Mon, 30 Aug 2010 00:20:06 +0200
changeset 39 73b21e9f3958
parent 37 74139325d305
child 48 b78e77619152
permissions -rw-r--r--
Some work on XDAEMON command.
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/*
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 *   SONEWS News Server
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 *   see AUTHORS for the list of contributors
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 *
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 *   This program is free software: you can redistribute it and/or modify
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 *   it under the terms of the GNU General Public License as published by
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 *   the Free Software Foundation, either version 3 of the License, or
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 *   (at your option) any later version.
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 *
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 *   This program is distributed in the hope that it will be useful,
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *   GNU General Public License for more details.
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 *
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 *   You should have received a copy of the GNU General Public License
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 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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package org.sonews.util;
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import java.util.Calendar;
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import org.sonews.config.Config;
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import org.sonews.storage.Channel;
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import org.sonews.storage.StorageBackendException;
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import org.sonews.storage.StorageManager;
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/**
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 * Class that capsulates statistical data gathering.
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 * @author Christian Lins
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 * @since sonews/0.5.0
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 */
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public final class Stats
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{
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	public static final byte CONNECTIONS = 1;
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	public static final byte POSTED_NEWS = 2;
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	public static final byte GATEWAYED_NEWS = 3;
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	public static final byte FEEDED_NEWS = 4;
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	public static final byte MLGW_RUNSTART = 5;
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	public static final byte MLGW_RUNEND = 6;
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	private static Stats instance = new Stats();
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	public static Stats getInstance()
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	{
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		return Stats.instance;
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	}
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	private Stats()
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	{
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	}
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	private volatile int connectedClients = 0;
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	/**
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	 * A generic method that writes event data to the storage backend.
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	 * If event logging is disabled with sonews.eventlog=false this method
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	 * simply does nothing.
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	 * @param type
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	 * @param groupname
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	 */
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	private void addEvent(byte type, String groupname)
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	{
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		try {
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			if (Config.inst().get(Config.EVENTLOG, true)) {
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				Channel group = Channel.getByName(groupname);
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				if (group != null) {
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					StorageManager.current().addEvent(
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						System.currentTimeMillis(), type, group.getInternalID());
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				}
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			} else {
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				Log.get().info("Group " + groupname + " does not exist.");
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			}
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		} catch (StorageBackendException ex) {
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			ex.printStackTrace();
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		}
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	}
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	public void clientConnect()
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	{
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		this.connectedClients++;
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	}
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	public void clientDisconnect()
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	{
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		this.connectedClients--;
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	}
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	public int connectedClients()
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	{
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		return this.connectedClients;
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	}
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	public int getNumberOfGroups()
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	{
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		try {
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			return StorageManager.current().countGroups();
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		} catch (StorageBackendException ex) {
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			ex.printStackTrace();
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			return -1;
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		}
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	}
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	public int getNumberOfNews()
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	{
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		try {
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			return StorageManager.current().countArticles();
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		} catch (StorageBackendException ex) {
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			ex.printStackTrace();
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			return -1;
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		}
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	}
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	public int getYesterdaysEvents(final byte eventType, final int hour,
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		final Channel group)
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	{
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		// Determine the timestamp values for yesterday and the given hour
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		Calendar cal = Calendar.getInstance();
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		int year = cal.get(Calendar.YEAR);
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		int month = cal.get(Calendar.MONTH);
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		int dayom = cal.get(Calendar.DAY_OF_MONTH) - 1; // Yesterday
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		cal.set(year, month, dayom, hour, 0, 0);
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		long startTimestamp = cal.getTimeInMillis();
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		cal.set(year, month, dayom, hour + 1, 0, 0);
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		long endTimestamp = cal.getTimeInMillis();
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		try {
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			return StorageManager.current().getEventsCount(eventType, startTimestamp, endTimestamp, group);
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		} catch (StorageBackendException ex) {
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			ex.printStackTrace();
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			return -1;
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		}
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	}
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	public void mailPosted(String groupname)
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	{
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		addEvent(POSTED_NEWS, groupname);
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	}
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	public void mailGatewayed(String groupname)
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	{
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		addEvent(GATEWAYED_NEWS, groupname);
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	}
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	public void mailFeeded(String groupname)
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	{
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		addEvent(FEEDED_NEWS, groupname);
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	}
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	public void mlgwRunStart()
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	{
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		addEvent(MLGW_RUNSTART, "control");
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	}
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	public void mlgwRunEnd()
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	{
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		addEvent(MLGW_RUNEND, "control");
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	}
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	private double perHour(int key, long gid)
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	{
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		try {
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			return StorageManager.current().getEventsPerHour(key, gid);
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		} catch (StorageBackendException ex) {
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			ex.printStackTrace();
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			return -1;
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		}
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	}
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	public double postedPerHour(long gid)
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	{
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		return perHour(POSTED_NEWS, gid);
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	}
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	public double gatewayedPerHour(long gid)
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	{
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		return perHour(GATEWAYED_NEWS, gid);
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	}
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	public double feededPerHour(long gid)
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	{
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		return perHour(FEEDED_NEWS, gid);
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	}
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}