chris@1: /*
chris@1:  *   SONEWS News Server
chris@1:  *   see AUTHORS for the list of contributors
chris@1:  *
chris@1:  *   This program is free software: you can redistribute it and/or modify
chris@1:  *   it under the terms of the GNU General Public License as published by
chris@1:  *   the Free Software Foundation, either version 3 of the License, or
chris@1:  *   (at your option) any later version.
chris@1:  *
chris@1:  *   This program is distributed in the hope that it will be useful,
chris@1:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
chris@1:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
chris@1:  *   GNU General Public License for more details.
chris@1:  *
chris@1:  *   You should have received a copy of the GNU General Public License
chris@1:  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
chris@1:  */
chris@1: package org.sonews.util;
chris@1: 
chris@1: import java.util.Calendar;
cli@49: import java.util.logging.Level;
chris@3: import org.sonews.config.Config;
cli@48: import org.sonews.storage.Group;
chris@3: import org.sonews.storage.StorageBackendException;
chris@3: import org.sonews.storage.StorageManager;
chris@1: 
chris@1: /**
chris@1:  * Class that capsulates statistical data gathering.
chris@1:  * @author Christian Lins
chris@1:  * @since sonews/0.5.0
chris@1:  */
cli@48: public final class Stats {
chris@1: 
cli@37: 	public static final byte CONNECTIONS = 1;
cli@37: 	public static final byte POSTED_NEWS = 2;
cli@37: 	public static final byte GATEWAYED_NEWS = 3;
cli@37: 	public static final byte FEEDED_NEWS = 4;
cli@37: 	public static final byte MLGW_RUNSTART = 5;
cli@37: 	public static final byte MLGW_RUNEND = 6;
cli@37: 	private static Stats instance = new Stats();
chris@3: 
cli@48: 	public static Stats getInstance() {
cli@37: 		return Stats.instance;
cli@37: 	}
cli@31: 
cli@48: 	private volatile int connectedClients = 0;
cli@48: 
cli@48: 	private Stats() {
cli@37: 	}
cli@37: 
cli@37: 	/**
cli@37: 	 * A generic method that writes event data to the storage backend.
cli@37: 	 * If event logging is disabled with sonews.eventlog=false this method
cli@37: 	 * simply does nothing.
cli@37: 	 * @param type
cli@37: 	 * @param groupname
cli@37: 	 */
cli@48: 	private void addEvent(byte type, String groupname) {
cli@37: 		try {
cli@37: 			if (Config.inst().get(Config.EVENTLOG, true)) {
cli@48: 				Group group = StorageManager.current().getGroup(groupname);
cli@37: 				if (group != null) {
cli@37: 					StorageManager.current().addEvent(
cli@48: 							System.currentTimeMillis(), type, group.getInternalID());
cli@37: 				}
cli@37: 			} else {
cli@49: 				StringBuilder strBuf = new StringBuilder();
cli@49: 				strBuf.append("Group ");
cli@49: 				strBuf.append(groupname);
cli@49: 				strBuf.append(" does not exist.");
cli@49: 				Log.get().info(strBuf.toString());
cli@37: 			}
cli@37: 		} catch (StorageBackendException ex) {
cli@49: 			Log.get().log(Level.SEVERE, ex.getLocalizedMessage(), ex);
cli@37: 		}
cli@37: 	}
cli@37: 
cli@48: 	public void clientConnect() {
cli@37: 		this.connectedClients++;
cli@37: 	}
cli@37: 
cli@48: 	public void clientDisconnect() {
cli@37: 		this.connectedClients--;
cli@37: 	}
cli@37: 
cli@48: 	public int connectedClients() {
cli@37: 		return this.connectedClients;
cli@37: 	}
cli@37: 
cli@48: 	public int getNumberOfGroups() {
cli@37: 		try {
cli@37: 			return StorageManager.current().countGroups();
cli@37: 		} catch (StorageBackendException ex) {
cli@49: 			Log.get().log(Level.SEVERE, ex.getLocalizedMessage(), ex);
cli@37: 			return -1;
cli@37: 		}
cli@37: 	}
cli@37: 
cli@48: 	public int getNumberOfNews() {
cli@37: 		try {
cli@37: 			return StorageManager.current().countArticles();
cli@37: 		} catch (StorageBackendException ex) {
cli@49: 			Log.get().log(Level.SEVERE, ex.getLocalizedMessage(), ex);
cli@37: 			return -1;
cli@37: 		}
cli@37: 	}
cli@37: 
cli@37: 	public int getYesterdaysEvents(final byte eventType, final int hour,
cli@48: 			final Group group) {
cli@37: 		// Determine the timestamp values for yesterday and the given hour
cli@37: 		Calendar cal = Calendar.getInstance();
cli@37: 		int year = cal.get(Calendar.YEAR);
cli@37: 		int month = cal.get(Calendar.MONTH);
cli@37: 		int dayom = cal.get(Calendar.DAY_OF_MONTH) - 1; // Yesterday
cli@37: 
cli@37: 		cal.set(year, month, dayom, hour, 0, 0);
cli@37: 		long startTimestamp = cal.getTimeInMillis();
cli@37: 
cli@37: 		cal.set(year, month, dayom, hour + 1, 0, 0);
cli@37: 		long endTimestamp = cal.getTimeInMillis();
cli@37: 
cli@37: 		try {
cli@37: 			return StorageManager.current().getEventsCount(eventType, startTimestamp, endTimestamp, group);
cli@37: 		} catch (StorageBackendException ex) {
cli@49: 			Log.get().log(Level.SEVERE, ex.getLocalizedMessage(), ex);
cli@37: 			return -1;
cli@37: 		}
cli@37: 	}
cli@37: 
cli@48: 	public void mailPosted(String groupname) {
cli@37: 		addEvent(POSTED_NEWS, groupname);
cli@37: 	}
cli@37: 
cli@48: 	public void mailGatewayed(String groupname) {
cli@37: 		addEvent(GATEWAYED_NEWS, groupname);
cli@37: 	}
cli@37: 
cli@48: 	public void mailFeeded(String groupname) {
cli@37: 		addEvent(FEEDED_NEWS, groupname);
cli@37: 	}
cli@37: 
cli@48: 	public void mlgwRunStart() {
cli@37: 		addEvent(MLGW_RUNSTART, "control");
cli@37: 	}
cli@37: 
cli@48: 	public void mlgwRunEnd() {
cli@37: 		addEvent(MLGW_RUNEND, "control");
cli@37: 	}
cli@37: 
cli@48: 	private double perHour(int key, long gid) {
cli@37: 		try {
cli@37: 			return StorageManager.current().getEventsPerHour(key, gid);
cli@37: 		} catch (StorageBackendException ex) {
cli@49: 			Log.get().log(Level.SEVERE, ex.getLocalizedMessage(), ex);
cli@37: 			return -1;
cli@37: 		}
cli@37: 	}
cli@37: 
cli@48: 	public double postedPerHour(long gid) {
cli@37: 		return perHour(POSTED_NEWS, gid);
cli@37: 	}
cli@37: 
cli@48: 	public double gatewayedPerHour(long gid) {
cli@37: 		return perHour(GATEWAYED_NEWS, gid);
cli@37: 	}
cli@37: 
cli@48: 	public double feededPerHour(long gid) {
cli@37: 		return perHour(FEEDED_NEWS, gid);
cli@37: 	}
chris@1: }