Changes between Version 2 and Version 3 of TracLogging
- Timestamp:
- 09/14/17 14:49:49 (7 years ago)
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TracLogging
v2 v3 1 = Trac Logging =1 = Trac Logging 2 2 [[TracGuideToc]] 3 3 4 Trac supports logging of system messages using the standard [http://docs.python.org/library/logging.html logging module] that comes with Python.4 Trac supports logging of system messages using Python's [http://docs.python.org/library/logging.html logging module]. 5 5 6 Logging is configured in the `[logging]` section in [wiki:TracIni#logging-section trac.ini].6 Logging is configured in the [TracIni#logging-section "[logging]"] section of TracIni. 7 7 8 == Supported Logging Methods ==8 == Supported Logging Methods 9 9 10 The log method is set using the `log_type` option in [wiki:TracIni#logging-section trac.ini], which takes any ofthe following values:10 The log method is set using the [TracIni#logging-log_type-option "[logging] log_type"] option, which accepts the following values: 11 11 12 12 '''none'':: Suppress all log messages. 13 '''file''':: Log messages to a file, specified with the `log_file` option in [wiki:TracIni#logging-section trac.ini]. Relative paths in `log_file` are resolved relative to the `log` directory of the environment.14 '''stderr''':: Output all log entries to console ([wiki:TracStandalone tracd] only).15 '''syslog''':: (UNIX) Send all log messages to the local syslogd via named pipe `/dev/log`. By default, syslog will write them to the file /var/log/messages.16 '''eventlog''':: (Windows) Use the system's NT Event Log for Trac logging.13 '''file''':: Log messages to a file, specified with the [TracIni#logging-log_file-option "[logging] log_file"] option. Relative paths for `log_file` are resolved relative to the environment `log` directory. 14 '''stderr''':: Output log entries to console ([TracStandalone tracd] only). 15 '''syslog''':: (UNIX) Send log messages to the local syslogd via named pipe `/dev/log`. By default, syslog will write them to the `/var/log/messages` file. 16 '''eventlog''':: (Windows) Use the system's NT Event Log. 17 17 18 == Log Levels ==18 == Log Levels 19 19 20 The verbosity level of logged messages can be set using the `log_level` option in [wiki:TracIni#logging-section trac.ini]. The log level defines the minimum level of urgency required for a message to be logged, and those levels are:20 The verbosity level of logged messages can be set using the [TracIni#logging-log_level-option "[logging] log_level"] option. The log level defines the minimum level of urgency required for a message to be logged, and those levels are: 21 21 22 22 '''CRITICAL''':: Log only the most critical (typically fatal) errors. … … 26 26 '''DEBUG''':: Trace messages, profiling, etc. 27 27 28 Note that starting with Trac 0.11.5 you can in addition enable logging of SQL statements, at debug level. This is turned off by default, as it's very verbose (set `[trac] debug_sql = yes` in TracIni to activate).28 Additionally, you can enable logging of SQL statements at debug level. This is turned off by default, as it's very verbose. Set [TracIni#trac-debug_sql-option "[trac] debug_sql = yes"] to activate. 29 29 30 == Log Format ==30 == Log Format 31 31 32 Starting with Trac 0.10.4 (see [trac:#2844 #2844]), it is possible to set the output format for log entries. This can be done through the `log_format` option in [wiki:TracIni#logging-section trac.ini]. The format is a string which can contain any of the [http://docs.python.org/library/logging.html#logrecord-attributes Python logging Formatter variables]. Additonally, the following Trac-specific variables can be used:33 '''$(basename)s''':: The last path component of the current environment.34 '''$(path)s''':: The absolute path for the current environment.32 The output format for log entries can be specified in the [TracIni#logging-log_format-option "[logging] log_format"] option. The format is a string which can contain any of the [https://docs.python.org/2/library/logging.html#logrecord-attributes Python logging Formatter variables]. Additionally, the following Trac-specific variables can be used: 33 '''$(basename)s''':: The environment directory name. 34 '''$(path)s''':: The absolute path of the environment directory. 35 35 '''$(project)s''':: The originating project's name. 36 36 … … 38 38 39 39 The default format is: 40 {{{ 40 {{{#!ini 41 41 log_format = Trac[$(module)s] $(levelname)s: $(message)s 42 42 }}} 43 43 44 44 In a multi-project environment where all logs are sent to the same place (e.g. `syslog`), it makes sense to add the project name. In this example we use `basename` since that can generally be used to identify a project: 45 {{{ 45 {{{#!ini 46 46 log_format = Trac[$(basename)s:$(module)s] $(levelname)s: $(message)s 47 47 }}} 48 48 49 49 ---- 50 See also: TracIni, Trac Guide, TracEnvironment50 See also: TracIni, TracEnvironment