Class: Metriks::OpenTSDBReporter

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(h, t, options = {}) ⇒ OpenTSDBReporter

Returns a new instance of OpenTSDBReporter.



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# File 'lib/metriks/opentsdb_reporter.rb', line 8

def initialize(h, t, options = {})
  @hostname = h
  @tags = t

  @prefix = options[:prefix]
  @source = options[:source]

  @logger       = options[:logger] || nil
  @batch_size   = options[:batch_size] || 50
  @registry     = options[:registry] || Metriks::Registry.default
  @interval     = options[:interval] || 60
  @time_tracker = Metriks::TimeTracker.new(@interval)
  @on_error     = options[:on_error] || proc { |ex| }

  if options[:percentiles]
    @percentiles = options[:percentiles]
  else
    @percentiles = [ 0.95, 0.99]
  end

  @mutex = Mutex.new
  @running = false
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/metriks/opentsdb_reporter.rb', line 6

def data
  @data
end

#hostname ⇒ Object

Returns the value of attribute hostname.



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# File 'lib/metriks/opentsdb_reporter.rb', line 6

def hostname
  @hostname
end

#prefix ⇒ Object

Returns the value of attribute prefix.



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# File 'lib/metriks/opentsdb_reporter.rb', line 6

def prefix
  @prefix
end

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/metriks/opentsdb_reporter.rb', line 6

def source
  @source
end

#tags ⇒ Object

Returns the value of attribute tags.



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# File 'lib/metriks/opentsdb_reporter.rb', line 6

def tags
  @tags
end

Instance Method Details

#flush ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 69

def flush
  begin
    @mutex.synchronize do
      info("Flushing metrics")
      submit get_datapoints
    end
  rescue Exception => ex
    if !@logger.nil?
      @logger.error(ex.message)
    end
    @on_error[ex] rescue nil
  end
end

#get_datapoints ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 102

def get_datapoints
  time = @time_tracker.now_floored

  datapoints = []
  @registry.each do |name, metric|
    next if name.nil? || name.empty?
    name = name.to_s.gsub(/ +/, '_')

    case metric
    when Metriks::Meter
      datapoints << {
        :metric => "#{name}.count",
        :timestamp => time,
        :value => metric.count,
        :tags => @tags
      }
      datapoints << {
        :metric => "#{name}.mean_rate",
        :timestamp => time,
        :value => metric.mean_rate,
        :tags => @tags
      }
      datapoints << {
        :metric => "#{name}.m1",
        :timestamp => time,
        :value => metric.one_minute_rate,
        :tags => @tags
      }
      datapoints << {
        :metric => "#{name}.m5",
        :timestamp => time,
        :value => metric.five_minute_rate,
        :tags => @tags
      }
      datapoints << {
        :metric => "#{name}.m15",
        :timestamp => time,
        :value => metric.fifteen_minute_rate,
        :tags => @tags
      }
    when Metriks::Counter
      datapoints << {
        :metric => name,
        :timestamp => time,
        :value => metric.count,
        :tags => @tags
      }
    when Metriks::Gauge
      datapoints << {
        :metric => name,
        :timestamp => time,
        :value => metric.value,
        :tags => @tags
      }
    when Metriks::Histogram, Metriks::Timer, Metriks::UtilizationTimer
      datapoints << {
        :metric => "#{name}.count",
        :timestamp => time,
        :value => metric.count,
        :tags => @tags
      }
      if Metriks::UtilizationTimer === metric || Metriks::Timer === metric
        datapoints << {
          :metric => "#{name}.mean_rate",
          :timestamp => time,
          :value => metric.mean_rate,
          :tags => @tags
        }
        datapoints << {
          :metric => "#{name}.m1",
          :timestamp => time,
          :value => metric.one_minute_rate,
          :tags => @tags
        }
        datapoints << {
          :metric => "#{name}.m5",
          :timestamp => time,
          :value => metric.five_minute_rate,
          :tags => @tags
        }
        datapoints << {
          :metric => "#{name}.m15",
          :timestamp => time,
          :value => metric.fifteen_minute_rate,
          :tags => @tags
        }
      end
      snapshot = metric.snapshot
      datapoints << {
        :metric => "#{name}.median",
        :timestamp => time,
        :value => snapshot.median,
        :tags => @tags
      }

      @percentiles.each do |percentile|
        datapoints << {
          :metric => "#{name}.p#{(percentile * 100).to_i}",
          :timestamp => time,
          :value => snapshot.value(percentile),
          :tags => @tags
        }
      end
    end
  end
  info("Captured #{datapoints.size} metrics")
  datapoints
end

#info(msg) ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 32

def info(msg)
  if !@logger.nil?
    @logger.info(msg)
  end
end

#restart ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 64

def restart
  stop
  start
end

#start ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 38

def start
  if @thread && @thread.alive?
    return
  end

  @running = true
  @thread = Thread.new do
    while @running
      @time_tracker.sleep

      Thread.new do
        flush
      end
    end
  end
end

#stop ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 55

def stop
  @running = false

  if @thread
    @thread.join
    @thread = nil
  end
end

#submit(datapoints) ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 83

def submit(datapoints)
  return if datapoints.empty?

  index = 0
  length = @batch_size
  while index < datapoints.size
    if datapoints.size < (index + length)
      length = datapoints.size - index
    else
      length = @batch_size
    end

    RestClient.post "#{@hostname}/api/put",
      datapoints[index, length].to_json,
      :content_type => :json, :accept => :json
    index += length
  end
end