Class: Metriks::Reporter::Riemann

Inherits:
Object
  • Object
show all
Defined in:
lib/metriks/reporter/riemann.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Riemann

Returns a new instance of Riemann.



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# File 'lib/metriks/reporter/riemann.rb', line 6

def initialize(options = {})
  @client = ::Riemann::Client.new(
    :host => options[:host],
    :port => options[:port]
  )
  @registry = options[:registry] || Metriks::Registry.default
  @interval = options[:interval] || 60
  @on_error = options[:on_error] || proc { |ex| }
  
  @default_event = options[:default_event] || {}
  @default_event[:ttl] ||= @interval * 1.5
end

Instance Attribute Details

#client ⇒ Object

Returns the value of attribute client.



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# File 'lib/metriks/reporter/riemann.rb', line 5

def client
  @client
end

Instance Method Details

#flush ⇒ Object 



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# File 'lib/metriks/reporter/riemann.rb', line 45

def flush
  # Is this supposed to take interval into account? --aphyr
  if !@last_write || @last_write.min != Time.now.min
    write
  end
end

#restart ⇒ Object 



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# File 'lib/metriks/reporter/riemann.rb', line 40

def restart
  stop
  start
end

#send_metric(name, type, metric, keys, snapshot_keys = []) ⇒ Object 



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# File 'lib/metriks/reporter/riemann.rb', line 98

def send_metric(name, type, metric, keys, snapshot_keys = [])
  keys.each do |key|
    @client << @default_event.merge(
      :service => "#{name} #{key}",
      :metric => metric.send(key),
      :tags => [type]
    )
  end

  unless snapshot_keys.empty?
    snapshot = metric.snapshot
    snapshot_keys.each do |key|
      @client << @default_event.merge(
        :service => "#{name} #{key}",
        :metric => snapshot.send(key),
        :tags => [type]
      )
    end
  end
end

#start ⇒ Object 



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# File 'lib/metriks/reporter/riemann.rb', line 19

def start
  @thread ||= Thread.new do
    loop do
      sleep @interval
      
      Thread.new do
        begin
          write
        rescue Exception => ex
          @on_error[ex] rescue nil
        end
      end
    end
  end
end

#stop ⇒ Object 



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# File 'lib/metriks/reporter/riemann.rb', line 35

def stop
  @thread.kill if @thread
  @thread = nil
end

#write ⇒ Object 



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# File 'lib/metriks/reporter/riemann.rb', line 52

def write
  @last_write = Time.now

  @registry.each do |name, metric|
    case metric
    when Metriks::Meter
      send_metric name, 'meter', metric, [
        :count, :one_minute_rate, :five_minute_rate,
        :fifteen_minute_rate, :mean_rate
      ]
    when Metriks::Counter
      send_metric name, 'counter', metric, [
        :count
      ]
    when Metriks::Gauge
      send_metric name, 'gauge', metric, [
        :value
      ]
    when Metriks::UtilizationTimer
      send_metric name, 'utilization_timer', metric, [
        :count, :one_minute_rate, :five_minute_rate,
        :fifteen_minute_rate, :mean_rate,
        :min, :max, :mean, :stddev,
        :one_minute_utilization, :five_minute_utilization,
        :fifteen_minute_utilization, :mean_utilization,
      ], [
        :median, :get_95th_percentile
      ]
    when Metriks::Timer
      send_metric name, 'timer', metric, [
        :count, :one_minute_rate, :five_minute_rate,
        :fifteen_minute_rate, :mean_rate,
        :min, :max, :mean, :stddev
      ], [
        :median, :get_95th_percentile
      ]
    when Metriks::Histogram
      send_metric name, 'histogram', metric, [
        :count, :min, :max, :mean, :stddev
      ], [
        :median, :get_95th_percentile
      ]
    end
  end
end