/*
* File : LoggerChannel.java
* Created : 28-Dec-2003
* By : parg
*
* Azureus - a Java Bittorrent client
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* 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 ( see the LICENSE file ).
*
* 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.gudy.azureus2.plugins.logging;
/**
* Manipulation of a subsection (a channel) of Azureus' logging.
*
* A logger channel is created or retrieve via {@link Logger}. Typically,
* a plugin has it's own channel which it can manipulate. All channels
* are part of Azureus logging as a whole, meaning anything logged here will
* also be fed to any functionality that operates on logging data (with
* the exception of {@link Logger#getNullChannel(String)}).
*
* @since 2.0.7.0
*/
public interface LoggerChannel {
/** Information Log Type */
public static final int LT_INFORMATION = 1;
/** Warning Log Type */
public static final int LT_WARNING = 2;
/** Error Log Type */
public static final int LT_ERROR = 3;
/**
* Returns the name of the Logger Channel
*
* @return Logger channel name
* @since 2.0.7.0
*/
public String getName();
/**
* Indicates whether or not logging is enabled - use to optimise calls to
* the log methods that require resources to construct the message to be
* logged.
*
* Note that this doesn't apply to alerts - these will always be handled
*
* @return Enabled state of logging
*
* @since 2.3.0.2
*/
public boolean isEnabled();
/**
* This causes the channel to also write to logs/<i>name</i> files in a cyclic
* fashion (c.f. the debug_1/2._log files)
*
* @since 2.4.0.2
*/
public void setDiagnostic();
/**
* Log a message of a specific type to this channel's logger
*
* @param log_type LT_* constant
* @param data text to log
*
* @since 2.0.7.0
*/
public void log(int log_type, String data);
/**
* log text with implicit type {@link #LT_INFORMATION}
*
* @param data text to log
*
* @since 2.1.0.0
*/
public void log(String data);
/**
* log an error with implicit type of {@link #LT_ERROR}
*
* @param error Throwable object to log
*
* @since 2.0.7.0
*/
public void log(Throwable error);
/**
* log an error with implicit type of {@link #LT_ERROR}
*
* @param data text to log
* @param error Throwable object to log
*
* @since 2.0.7.0
*/
public void log(String data, Throwable error);
/**
* Log a string against a list of objects
*
* @param relatedTo a list of what this log is related to (ex. Peer, Torrent,
* Download, Object)
* @param log_type LT_* constant
* @param data text to log
*
* @since 2.3.0.7
*/
public void log(Object[] relatedTo, int log_type, String data);
/**
* Log an error against an object.
*
* @param relatedTo What this log is related to (ex. Peer, Torrent,
* Download, Object, etc)
* @param log_type LT_* constant
* @param data text to log
*
* @since 2.3.0.7
*/
public void log(Object relatedTo, int log_type, String data);
/**
* Log an error against an object.
*
* @param relatedTo What this log is related to (ex. Peer, Torrent,
* Download, Object, etc)
* @param data text to log
* @param error Error that will be appended to the log entry
*
* @since 2.3.0.7
*/
public void log(Object relatedTo, String data, Throwable error);
/**
* Log an error against a list of objects
*
* @param relatedTo a list of what this log is related to (ex. Peer, Torrent,
* Download, Object)
* @param data text to log
* @param error Error that will be appended to the log entry
*
* @since 2.3.0.7
*/
public void log(Object[] relatedTo, String data, Throwable error);
/**
* Log an error against a list of objects with implicit type {@link #LT_INFORMATION}
*
* @param relatedTo a list of what this log is related to (ex. Peer, Torrent,
* Download, Object)
* @param data text to log
* @since 2.5.0.1
*/
public void log(Object[] relatedTo, String data);
/**
* Log an error against an object with implicit type {@link #LT_INFORMATION}
*
* @param relatedTo What this log is related to (ex. Peer, Torrent,
* Download, Object, etc)
* @param data text to log
*
* @since 2.5.0.1
*/
public void log(Object relatedTo, String data);
/**
* raise an alert to the user, if UI present
* Note that messages shown to the user are filtered on unique message content
* So if you raise an identical alert the second + subsequent messages will not be
* shown. Thus, if you want "identical" messages to be shown, prefix them with something
* unique like a timestamp.
*
* @param alert_type LT_* constant
* @param message text to alert user with
*
* @since 2.0.8.0
*/
public void logAlert(int alert_type, String message);
/**
* Alert the user of an error
*
* @param message text to alert user with
* @param e Error that will be attached to the alert
*
* @since 2.1.0.2
*/
public void logAlert(String message, Throwable e);
/**
* Raise an alert to the user, if UI present. Subsequent, identical messages
* will always generate an alert (i.e. duplicates won't be filtered)
*
* @param alert_type LT_* constant
* @param message text to alert user with
*
* @since 2.1.0.2
*/
public void logAlertRepeatable(int alert_type, String message);
/**
* Raise an alert to the user, if UI present. Subsequent, identical messages
* will always generate an alert (i.e. duplicates won't be filtered)
*
* @param message text to alert user with
* @param e Error that will be attached to the alert
*
* @since 2.1.0.2
*/
public void logAlertRepeatable(String message, Throwable e);
/**
* Add a LoggerChannelListener to this LoggerChannel
*
* @param l Listener to add
*
* @since 2.0.8.0
*/
public void addListener(LoggerChannelListener l);
/**
* Remove a reviously added LoggerChannelListener
*
* @param l Listener to remove.
*
* @since 2.0.8.0
*/
public void removeListener(LoggerChannelListener l);
/**
* Retrieve the parent Logger object for this LoggerChannel.
*
* @return Logger object
*
* @since 2.3.0.0
*/
public Logger getLogger();
}
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