Class: Fluent::MetricSenseOutput::Backends::DatadogBackend

Inherits:
Fluent::MetricSenseOutput::Backend show all
Defined in:
lib/fluent/plugin/backends/datadog_backend.rb

Constant Summary

Constants inherited from Fluent::MetricSenseOutput::Backend

Fluent::MetricSenseOutput::Backend::UpdateMode

Instance Attribute Summary

Attributes inherited from Fluent::MetricSenseOutput::Backend

#log

Instance Method Summary collapse

Methods inherited from Fluent::MetricSenseOutput::Backend

#shutdown, #start

Constructor Details

#initialize ⇒ DatadogBackend

Returns a new instance of DatadogBackend.



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# File 'lib/fluent/plugin/backends/datadog_backend.rb', line 29

def initialize()
  super
  require "dogapi"
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/backends/datadog_backend.rb', line 34

def configure(conf)
  super

  if @dd_api_key.nil?
    raise Fluent::ConfigError, "missing Datadog API key"
  end

  client_args = [@dd_api_key]
  client_args << @dd_app_key if @dd_app_key
  @dog = Dogapi::Client.new(*client_args)
end

#write(data) ⇒ Object 



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# File 'lib/fluent/plugin/backends/datadog_backend.rb', line 46

def write(data)
  data.each_slice(@batch_size) do |slice|
    metric_points = {}
    slice.each do |tag, time, value, seg_key, seg_val|
      if seg_key and seg_val
        # segmented values
        segment = "#{seg_key}:#{seg_val}"
      else
        # simple values
        segment = "simple"
      end
      metric = tag # use fluentd's tag as metric name on datadog
      metric_points[metric] ||= {}
      metric_points[metric][segment] ||= []
      metric_points[metric][segment].push([Time.at(time), value])
    end

    metric_points.each do |metric, segment_points|
      segment_points.each do |segment, points|
        seg_key, seg_val = segment.split(":", 2)

        tags = @tags.dup
        tags.push(segment)
        if seg_key and seg_val
          # add seg_key as a tag to allow calculating metrics over the segment name
          tags.push(seg_key)
        end

        options = {}
        options["tags"] = tags
        options["host"] = @host if @host
        options["type"] = "gauge"

        @dog.emit_points(metric, points, options)
      end
    end
  end
end