Rails Logging with Custom Logger

custom_logger.rb

module Logging
  class CustomLogger
    DEFAULTS = {
        level: :info
    }

    LEVELS = %w(debug info warn error fatal unknown).map(&:to_sym)

    def self.log(*tags, **params)
      level = determine_log_level(**params)
      params.delete(:level)
      message = build_message(*tags, **params)

      Rails.logger.send(level, message)
    end

    private

    def self.determine_log_level(**params)
      params.has_key?(:level) && params[:level].to_sym.in?(LEVELS) ? params[:level].to_sym : :info
    end

    def self.build_message(*tags, **params)
      tags.map!{ |tag| format_tag(tag) }
      params = params.map{ |args| format_param(args[0], args[1]) }


      tags.join(' ') + ' ' + params.join(' ')
    end

    def self.format_tag(tag)
      tag = tag.to_s.gsub(/[^\w]/i, '').upcase
      "[#{tag}]"
    end

    def self.format_param(key, value)
      key = key.to_s.gsub(/[^\w]/i, '').downcase
      value = value.to_s.gsub('"','')

      "#{key}=\"#{value}\""
    end
  end
end

# Can be used in conjunction with Rails.logger.tagged and Rails.logger.silence
def log(*tags, **params)
  Logging::CustomLogger.log(*tags, **params)
end

# Usage

log('MAIN_TAG', 'SUB_TAG', key1: value1, key2: value2, error_message: e.message)

Usage

log('MAIN_TAG', 'SUB_TAG', key1: value1, key2: value2, error_message: e.message, status: status, .......)