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Holger Just
d07a9452f4
The {UNDEFINED} object can be used as the default value for method
arguments to distinguish it from `nil`. See
https://holgerjust.de/2016/detecting-default-arguments-in-ruby/#special-default-value
for details.
89 lines
2.0 KiB
Ruby
89 lines
2.0 KiB
Ruby
# Copyright 2017 Holger Just
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#
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# This software may be modified and distributed under the terms
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# of the MIT license. See the LICENSE.txt file for details.
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require 'set'
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require 'rackstash/version'
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module Rackstash
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SEVERITIES = [
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DEBUG = 0,
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INFO = 1,
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WARN = 2,
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ERROR = 3,
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FATAL = 4,
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UNKNOWN = 5
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].freeze
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SEVERITY_NAMES = {
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'debug' => DEBUG,
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'info' => INFO,
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'warn' => WARN,
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'error' => ERROR,
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'fatal' => FATAL,
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'unknown' => UNKNOWN
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}.freeze
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SEVERITY_LABELS = [
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'DEBUG'.freeze,
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'INFO'.freeze,
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'WARN'.freeze,
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'ERROR'.freeze,
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'FATAL'.freeze,
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'ANY'.freeze
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].freeze
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PROGNAME = "rackstash/v#{Rackstash::VERSION}".freeze
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# A class for the {UNDEFINED} object. Generally, there will only be exactly
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# one object of this class.
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#
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# The {UNDEFINED} object can be used as the default value for method arguments
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# to distinguish it from `nil`. See https://holgerjust.de/2016/detecting-default-arguments-in-ruby/#special-default-value
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# for details.
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class UndefinedClass
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# @return [Boolean] `true` iff `other` is the exact same object as `self`
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def ==(other)
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self.equal?(other)
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end
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alias === ==
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alias eql? ==
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# @return [String] the string `"undefined"`
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def to_s
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'undefined'.freeze
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end
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alias inspect to_s
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end
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UNDEFINED = UndefinedClass.new
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EMPTY_STRING = ''.freeze
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EMPTY_SET = Set.new.freeze
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# How many decimal places to render on ISO 8601 timestamps
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ISO8601_PRECISION = 3
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FIELD_MESSAGE = 'message'.freeze
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FIELD_TAGS = 'tags'.freeze
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FIELD_TIMESTAMP = '@timestamp'.freeze
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FIELD_VERSION = '@version'.freeze
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def self.severity_label(severity)
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if severity.is_a?(Integer)
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SEVERITY_LABELS[severity] || SEVERITY_LABELS.last
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else
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severity = SEVERITY_NAMES.fetch(severity.to_s.downcase, UNKNOWN)
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SEVERITY_LABELS[severity]
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end
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end
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end
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require 'rackstash/logger'
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require 'rackstash/adapters/callable'
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require 'rackstash/adapters/file'
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require 'rackstash/adapters/io'
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