Module: ActFluentLoggerRails::Logger

Defined in:
lib/act-fluent-logger-rails/logger.rb

Constant Summary collapse

SEV_LABEL =

Severity label for logging. (max 5 char)

%w(DEBUG INFO WARN ERROR FATAL ANY)

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.new(config_file: Rails.root.join("config", "fluent-logger.yml"), log_tags: {}, settings: {}, flush_immediately: false) ⇒ Object 



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# File 'lib/act-fluent-logger-rails/logger.rb', line 14

def self.new(config_file: Rails.root.join("config", "fluent-logger.yml"),
             log_tags: {},
             settings: {},
             flush_immediately: false)
  Rails.application.config.log_tags = log_tags.values
  if Rails.application.config.respond_to?(:action_cable)
    Rails.application.config.action_cable.log_tags = log_tags.values.map do |x|
      case
      when x.respond_to?(:call)
        x
      when x.is_a?(Symbol)
        -> (request) { request.send(x) }
      else
        -> (request) { x }
      end
    end
  end
  if (0 == settings.length)
    fluent_config = if ENV["FLUENTD_URL"]
                      self.parse_url(ENV["FLUENTD_URL"])
                    else
                      YAML.load(ERB.new(config_file.read).result)[Rails.env]
                    end
    settings = {
      tag:  fluent_config['tag'],
      host: fluent_config['fluent_host'],
      port: fluent_config['fluent_port'],
      nanosecond_precision: fluent_config['nanosecond_precision'],
      messages_type: fluent_config['messages_type'],
      severity_key: fluent_config['severity_key'],
      tls_options: fluent_config['tls_options']&.transform_keys { |k| k.to_sym }
    }
  end

  settings[:flush_immediately] ||= flush_immediately

  level = SEV_LABEL.index(Rails.application.config.log_level.to_s.upcase)
  logger = ActFluentLoggerRails::FluentLogger.new(settings, level, log_tags)
  logger = ActiveSupport::TaggedLogging.new(logger)
  logger.extend self
end

.parse_url(fluentd_url) ⇒ Object 



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# File 'lib/act-fluent-logger-rails/logger.rb', line 56

def self.parse_url(fluentd_url)
  uri = URI.parse fluentd_url
  params = CGI.parse uri.query

  {
    fluent_host: uri.host,
    fluent_port: uri.port,
    tag: uri.path[1..-1],
    nanosecond_precision: params['nanosecond_precision'].try(:first),
    messages_type: params['messages_type'].try(:first),
    severity_key: params['severity_key'].try(:first),
  }.stringify_keys
end

Instance Method Details

#tagged(*tags) ⇒ Object 



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# File 'lib/act-fluent-logger-rails/logger.rb', line 70

def tagged(*tags)
  @tags_thread_key ||= "fluentd_tagged_logging_tags:#{object_id}".freeze
  Thread.current[@tags_thread_key] = tags.flatten
  yield self
ensure
  flush
end