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# frozen_string_literal: true
module Lumberjack
# The standard severity levels for logging messages.
module Severity
# Custom severity level for trace messages, lower than DEBUG.
TRACE = -1
DEBUG = Logger::Severity::DEBUG
INFO = Logger::Severity::INFO
WARN = Logger::Severity::WARN
ERROR = Logger::Severity::ERROR
FATAL = Logger::Severity::FATAL
UNKNOWN = Logger::Severity::UNKNOWN
SEVERITY_LABELS = %w[TRACE DEBUG INFO WARN ERROR FATAL ANY].freeze
private_constant :SEVERITY_LABELS
# Data object for severity levels that includes variations on the label.
class Data
attr_reader :level, :label, :padded_label, :char, :emoji, :terminal_color
def initialize(level, label, emoji, terminal_color)
@level = level
@label = label.freeze
@padded_label = label.ljust(5).freeze
@char = label[0].freeze
@emoji = emoji.freeze
@terminal_color = "\e[38;5;#{terminal_color}m"
end
end
SEVERITIES = [
Data.new(TRACE, "TRACE", "🔍", 247).freeze,
Data.new(DEBUG, "DEBUG", "🔧", 244).freeze,
Data.new(INFO, "INFO", "🔵", 33).freeze,
Data.new(WARN, "WARN", "🟡", 208).freeze,
Data.new(ERROR, "ERROR", "❌", 9).freeze,
Data.new(FATAL, "FATAL", "🔥", 160).freeze,
Data.new(UNKNOWN, "ANY", "❓", 129).freeze
].freeze
private_constant :SEVERITIES
class << self
# Convert a severity level to a label.
#
# @param severity [Integer] The severity level to convert.
# @return [String] The severity label.
def level_to_label(severity)
SEVERITIES[severity + 1]&.label || SEVERITIES.last.label
end
# Convert a severity label to a level.
#
# @param label [String, Symbol] The severity label to convert.
# @return [Integer] The severity level.
def label_to_level(label)
label = label.to_s.upcase
(SEVERITY_LABELS.index(label) || UNKNOWN + 1) - 1
end
# Coerce a value to a severity level.
#
# @param value [Integer, String, Symbol] The value to coerce.
# @return [Integer] The severity level.
def coerce(value)
if value.is_a?(Numeric)
value.to_i
else
label_to_level(value)
end
end
# Return a data object that maps the severity level to variations on the label.
#
# @param level [Integer, String, Symbol] The severity level.
# @return [SeverityData] The severity data object.
def data(level)
SEVERITIES[coerce(level) + 1] || SEVERITIES.last
end
end
end
end
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