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# Logger class variable mix-in
#
# Lazy initialize a logger class variable with instance accessor
#
# By including this mix-in into any class it will define a class level logger
# and also make it accessible via instance methods
#
# Example
#
# require 'semantic_logger'
# SemanticLogger.default_level = :debug
# SemanticLogger.add_appender(io: STDOUT, formatter: :color)
#
# class ExternalSupplier
# # Create class and instance logger methods
# include SemanticLogger::Loggable
#
# def call_supplier(amount, name)
# logger.debug "Calculating with amount", { amount: amount, name: name }
#
# # Measure and log on completion how long the call took to the external supplier
# logger.measure_info "Calling external interface" do
# # Code to call the external supplier ...
# end
# end
# end
module SemanticLogger
module Loggable
def self.included(base)
base.class_eval do
# Returns [SemanticLogger::Logger] class level logger
def self.logger
@semantic_logger ||= SemanticLogger[self]
end
# Replace instance class level logger
def self.logger=(logger)
@semantic_logger = logger
end
# Returns [SemanticLogger::Logger] instance level logger
def logger
@semantic_logger ||= self.class.logger
end
# Replace instance level logger
def logger=(logger)
@semantic_logger = logger
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems