Changes between Initial Version and Version 1 of S3/S3Log

Timestamp:

02/16/14 21:25:40 (11 years ago)

Author:

redsin

Comment:

--

S3/S3Log

@@ +1 @@
+= S3Log =
+[[TOC]]
+
+== Purpose ==
+
+S3Log is a simple global logging facility for Sahana Eden.
+
+== Logger ==
+
+The logger is called like:
+{{{#!python
+current.log.error("Something went wrong", value="Example")
+}}}
+Which gives a log entry like:
+{{{
+2014-02-16 11:58:41 S3LOG ERROR: Something went wrong: Example
+}}}
+The logger functions correspond to the severity level of the message:
+ - current.log.critical() (highest)
+ - current.log.error()
+ - current.log.warning()
+ - current.log.info()
+ - current.log.debug() (lowest)
+The call signature of all logger functions is identical with the example above.
+
+== Configuration ==
+
+The logger can be configured in models/000_config:
+{{{#!python
+# Configure the log level ("DEBUG", "INFO", "WARNING", "ERROR" or "CRITICAL"), None = turn off logging
+#settings.log.level = None
+# Uncomment to write log messages to the console (sys.stderr)
+#settings.log.console = True
+# Configure a log file (file name)
+#settings.log.logfile = None
+# Uncomment to get detailed caller information
+#settings.log.caller_info = True
+}}}
+
+=== Log Level ===
+
+{{{#!python
+settings.log.level = "DEBUG"
+}}}
+determines the minimum severity level at which messages will be logged.
+
+Severity levels:
+ - CRITICAL (highest)
+ - ERROR
+ - WARNING
+ - INFO
+ - DEBUG (lowest)
+ - None turns all logging off.
+
+=== Console ===
+
+{{{#!python
+settings.log.console = True 
+}}}
+enables logging to the system error console (sys.stderr).
+False disables console logging.
+
+=== Log File ===
+
+{{{#!python
+settings.log.logfile = "/var/log/eden.log"
+}}}
+enables logging to the specified file. The logger rotates 3 log files with a maximum size of 1MB: /var/log/eden.log, /var/log/eden.log.1 and /var/log/eden.log.2
+None disables logging to file.
+
+=== Caller Info ===
+
+With settings.log.caller_info = True, the log messages will include information about the origin of the log message (file name, line number, function name):
+{{{
+2014-02-16 11:58:23 (applications/eden/modules/s3/s3rest.py 477 __init__) ERROR: Something went wrong: Example
+}}}