Class: Fluent::Plugin::DatadogStatsdOutput

Inherits:
Output
  • Object
show all
Defined in:
lib/fluent/plugin/out_datadog_statsd.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#statsd ⇒ Object (readonly)

Returns the value of attribute statsd.



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# File 'lib/fluent/plugin/out_datadog_statsd.rb', line 35

def statsd
  @statsd
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_datadog_statsd.rb', line 37

def configure(conf)
  super

  placeholder_params = [
    @metric_type,
    @tags
  ]

  if @metric_config
    placeholder_params += [
      @metric_config.name,
      @metric_config.value
    ]
  end
  if @event_config
    placeholder_params += [
      @event_config.title,
      @event_config.text,
      @event_config.aggregation_key,
      @event_config.alert_type,
      @event_config.priority,
      @event_config.source_type_name,
      @event_config.date_happened
    ]
  end

  placeholder_validate!(:placeholder_params, placeholder_params.join('/'))

  require 'datadog/statsd'
  @host ||= Datadog::Statsd::DEFAULT_HOST
  @port ||= Datadog::Statsd::DEFAULT_PORT

  @statsd = Datadog::Statsd.new(@host, @port)
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/out_datadog_statsd.rb', line 76

def shutdown
  super
  @statsd.close
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/out_datadog_statsd.rb', line 72

def start
  super
end

#write(chunk) ⇒ Object 



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# File 'lib/fluent/plugin/out_datadog_statsd.rb', line 81

def write(chunk)
  metadata = chunk.metadata
  metric_type = extract_placeholders(@metric_type, metadata).to_sym

  @statsd.batch do |statsd|
    statsd_param = case metric_type
                   when :increment, :decrement
                     if @metric_config.nil?
                       log.error("metric section is required when metric_type=#{metric_type}")
                       return nil
                     end
                     extract_placeholders_name_opt(metadata)

                   when :count, :gauge, :histgram, :timing, :set
                     if @metric_config.nil?
                       log.error("metric section is required when metric_type=#{metric_type}")
                       return nil
                     end
                     extract_placeholders_name_value_opt(metadata)
                   when :event
                     if @event_config.nil?
                       log.error('event section is required when metric_type=event')
                       return nil
                     end
                     extract_placeholders_event(metadata)
                   else
                     log.error("param 'metric_type=#{metric_type}' is illegal.")
                     return nil
                   end
    statsd_func = statsd.method(metric_type)
    chunk.each do |_time, _record|
      statsd_func.call(*statsd_param)
    end
  end
end