|  | 1 | = Trac Logging = | 
          
            |  | 2 | [[TracGuideToc]] | 
          
            |  | 3 |  | 
          
            |  | 4 | Trac supports logging of system messages using the standard ''logging'' module part of Python 2.3 and newer. | 
          
            |  | 5 |  | 
          
            |  | 6 | '''Note:''' If you are using a Python version older than 2.3, the Trac logging mechanism will be silently disabled. | 
          
            |  | 7 |  | 
          
            |  | 8 | Logging is configured in the {{{[logging]}}} section in [wiki:TracIni trac.ini]. | 
          
            |  | 9 |  | 
          
            |  | 10 | == Python 2.2 Workaround == | 
          
            |  | 11 | If you are using Python 2.2, however, note that the logging package from Python 2.3 works perfectly under 2.2 as well; you can just copy the entire {{{logging}}} directory from the Python 2.3 library into the Python 2.2 lib directory. Perhaps not the most elegant solution, but it works. | 
          
            |  | 12 |  | 
          
            |  | 13 |  | 
          
            |  | 14 | == Supported Logging Methods == | 
          
            |  | 15 | * '''none''' -- Suppress all log messages. | 
          
            |  | 16 | * '''file''' -- Log messages to a file, specified with the ''log_file'' directive in [wiki:TracIni trac.ini]. | 
          
            |  | 17 | * '''stderr''' -- Output all log entries to console ([wiki:TracStandalone tracd] only). | 
          
            |  | 18 | * '''syslog''' -- (UNIX) Send messages to local syslogd via named pipe '/dev/log'. | 
          
            |  | 19 | * '''winlog''' -- (Windows) Use the system's NT eventlog for Trac logging. | 
          
            |  | 20 |  | 
          
            |  | 21 | == Log Levels == | 
          
            |  | 22 | The level of verbosity of logged messages can be set using the ''log_level'' directive in [wiki:TracIni trac.ini]. The log level defines the minimum level of urgency required for a message to be logged. | 
          
            |  | 23 |  | 
          
            |  | 24 | The levels are: | 
          
            |  | 25 | * ''CRITICAL'' -- Log only the most critical, typically fatal, messages. | 
          
            |  | 26 | * ''ERROR'' -- Request failures, bugs and errors. | 
          
            |  | 27 | * ''WARN'' -- Warnings, non-interrupting events. | 
          
            |  | 28 | * ''INFO'' -- Diagnostic information, log information about all requests. | 
          
            |  | 29 | * ''DEBUG'' -- Development messages, profiling, etc. Not fit for human consumption. | 
          
            |  | 30 |  | 
          
            |  | 31 | ---- | 
          
            |  | 32 | See also: TracIni, TracGuide, TracEnvironment |