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/* logging.vala
*
* Copyright © 2012 Canonical Ltd.
* By Siegfried-A. Gevatter <siegfried.gevatter@collabora.co.uk>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* 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 Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace Zeitgeist
{
namespace Logging
{
private static FileStream? log_file = null;
private const string BLUE = "\x1b[34m";
private const string GREEN = "\x1b[32m";
private const string RED = "\x1b[31m";
private const string YELLOW = "\x1b[33m";
private const string RESET = "\x1b[0m";
private static string get_log_level_string (LogLevelFlags log_levels,
out string color)
{
string log_level;
if ((log_levels & LogLevelFlags.LEVEL_ERROR) != 0)
{
log_level = "ERROR";
color = RED;
}
else if ((log_levels & LogLevelFlags.LEVEL_CRITICAL) != 0)
{
log_level = "CRITICAL";
color = RED;
}
else if ((log_levels & LogLevelFlags.LEVEL_WARNING) != 0)
{
log_level = "WARNING";
color = RED;
}
else if ((log_levels & LogLevelFlags.LEVEL_MESSAGE) != 0)
{
log_level = "MESSAGE";
color = BLUE;
}
else if ((log_levels & LogLevelFlags.LEVEL_INFO) != 0)
{
log_level = "INFO";
color = BLUE;
}
else if ((log_levels & LogLevelFlags.LEVEL_DEBUG) != 0)
{
log_level = "DEBUG";
color = GREEN;
}
else
{
log_level = "UNKNOWN";
color = BLUE;
}
return log_level;
}
private static void log_handler (string? log_domain,
LogLevelFlags log_levels, string message)
{
string color;
string log_level = get_log_level_string (log_levels, out color);
string timestamp = TimeVal ().to_iso8601 ().substring (11, 15);
unowned FileStream output;
if (log_levels >= LogLevelFlags.LEVEL_MESSAGE)
output = stdout; // MESSAGE, INFO or DEBUG
else
output = stderr;
// Print to console
output.printf ("%s[%s %s]%s %s\n", color, timestamp,
log_level, RESET, message);
// Log to file
if (Logging.log_file != null)
{
DateTime datetime = new DateTime.now_local ();
string date_string = "%s,%.3d".printf (
datetime.format ("%Y-%m-%d %H:%M:%S"),
(int) ((datetime.get_microsecond () / 1000.0)));
int pid = Posix.getpid ();
Logging.log_file.printf ("%d [%s] - %s - %s\n",
pid, date_string, log_level, message);
}
}
public static void setup_logging (string? log_level,
string? log_file=null)
{
LogLevelFlags discarded = LogLevelFlags.LEVEL_DEBUG;
if (log_level != null)
{
var ld = LogLevelFlags.LEVEL_DEBUG;
var li = LogLevelFlags.LEVEL_INFO;
var lm = LogLevelFlags.LEVEL_MESSAGE;
var lw = LogLevelFlags.LEVEL_WARNING;
var lc = LogLevelFlags.LEVEL_CRITICAL;
switch (log_level.up ())
{
case "DEBUG":
discarded = 0;
break;
case "INFO":
discarded = ld;
break;
case "WARNING":
discarded = ld | li | lm;
break;
case "CRITICAL":
discarded = ld | li | lm | lw;
break;
case "ERROR":
discarded = ld | li | lm | lw | lc;
break;
}
}
if (discarded != 0)
GLib.Log.set_handler (null, discarded, () => {});
if (log_file != null)
Logging.log_file = FileStream.open (log_file, "a");
LogLevelFlags logged = ~discarded & ~LogLevelFlags.FLAG_RECURSION;
GLib.Log.set_handler (null, logged, log_handler);
}
}
}
// vim:expandtab:ts=4:sw=4
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