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Contents
# frozen_string_literal: true
module Karafka
module Instrumentation
# Default logger for Event Delegator
# @note It uses ::Logger features - providing basic logging
class Logger < ::Logger
include Singleton
# Map containing information about log level for given environment
ENV_MAP = {
'production' => ::Logger::ERROR,
'test' => ::Logger::ERROR,
'development' => ::Logger::INFO,
'debug' => ::Logger::DEBUG,
'default' => ::Logger::INFO
}.freeze
# Creates a new instance of logger ensuring that it has a place to write to
def initialize(*_args)
ensure_dir_exists
super(target)
self.level = ENV_MAP[Karafka.env] || ENV_MAP['default']
end
private
# @return [Karafka::Helpers::MultiDelegator] multi delegator instance
# to which we will be writtng logs
# We use this approach to log stuff to file and to the STDOUT at the same time
def target
Karafka::Helpers::MultiDelegator
.delegate(:write, :close)
.to(STDOUT, file)
end
# Makes sure the log directory exists
def ensure_dir_exists
dir = File.dirname(log_path)
FileUtils.mkdir_p(dir) unless Dir.exist?(dir)
end
# @return [Pathname] Path to a file to which we should log
def log_path
@log_path ||= Karafka::App.root.join("log/#{Karafka.env}.log")
end
# @return [File] file to which we want to write our logs
# @note File is being opened in append mode ('a')
def file
@file ||= File.open(log_path, 'a')
end
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems