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module GELF
# There are two things you should know about log levels/severity:
# - syslog defines levels from 0 (Emergency) to 7 (Debug).
# 0 (Emergency) and 1 (Alert) levels are reserved for OS kernel.
# - Ruby default Logger defines levels from 0 (DEBUG) to 4 (FATAL) and 5 (UNKNOWN).
# Note that order is inverted.
# For compatibility we define our constants as Ruby Logger, and convert values before
# generating GELF message, using defined mapping.
module Levels
DEBUG = 0
INFO = 1
WARN = 2
ERROR = 3
FATAL = 4
UNKNOWN = 5
# Additional native syslog severities. These will work in direct mapping mode
# only, for compatibility with syslog sources unrelated to Logger.
EMERGENCY = 10
ALERT = 11
CRITICAL = 12
WARNING = 14
NOTICE = 15
INFORMATIONAL = 16
end
include Levels
# Maps Ruby Logger levels to syslog levels as SyslogLogger and syslogger gems. This one is default.
LOGGER_MAPPING = {DEBUG => 7, # Debug
INFO => 6, # Informational
WARN => 5, # Notice
ERROR => 4, # Warning
FATAL => 3, # Error
UNKNOWN => 1} # Alert – shouldn't be used
# Maps Syslog or Ruby Logger levels directly to standard syslog numerical severities.
DIRECT_MAPPING = {DEBUG => 7, # Debug
INFORMATIONAL => 6, # Informational (syslog source)
INFO => 6, # Informational (Logger source)
NOTICE => 5, # Notice
WARNING => 4, # Warning (syslog source)
WARN => 4, # Warning (Logger source)
ERROR => 3, # Error
CRITICAL => 2, # Critical (syslog source)
FATAL => 2, # Critical (Logger source)
ALERT => 1, # Alert (syslog source)
UNKNOWN => 1, # Alert - shouldn't be used (Logger source)
EMERGENCY => 0} # Emergency (syslog source)
end
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