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 9

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 7

def data
  @data
end

#hostname ⇒ Object

Returns the value of attribute hostname.



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# File 'lib/metriks/opentsdb_reporter.rb', line 7

def hostname
  @hostname
end

#logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/metriks/opentsdb_reporter.rb', line 7

def logger
  @logger
end

#prefix ⇒ Object

Returns the value of attribute prefix.



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# File 'lib/metriks/opentsdb_reporter.rb', line 7

def prefix
  @prefix
end

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/metriks/opentsdb_reporter.rb', line 7

def source
  @source
end

#tags ⇒ Object

Returns the value of attribute tags.



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# File 'lib/metriks/opentsdb_reporter.rb', line 7

def tags
  @tags
end

Instance Method Details

#create_datapoints(base_name, metric, time, keys, snapshot_keys = []) ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 159

def create_datapoints(base_name, metric, time, keys, snapshot_keys = [])
  datapoints = []
  keys.flatten.each do |key|
    name = key.to_s.gsub(/^get_/, '')
    datapoints << {
      :metric => "#{base_name}.#{name}",
      :timestamp => time,
      :value => metric.send(key),
      :tags => @tags
    }
  end

  unless snapshot_keys.empty?
    snapshot = metric.snapshot
    snapshot_keys.flatten.each do |key|
      name = key.to_s.gsub(/^get_/, '')
      datapoints << {
        :metric => "#{base_name}.#{name}",
        :timestamp => time,
        :value => snapshot.send(key),
        :tags => @tags
      }
    end
  end
  datapoints
end

#flush ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 70

def flush
  begin
    @mutex.synchronize do
      log "debug", "Flushing metrics"
      submit get_datapoints
    end
  rescue Exception => ex
    log "error",ex.message
    @on_error[ex] rescue nil
  end
end

#get_datapoints ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 104

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(/ +/, '_')
    if @prefix
      name = "#{@prefix}.#{name}"
    end

    case metric
    when Metriks::Meter
      datapoints |= create_datapoints name, metric, time, [
        :count, :one_minute_rate, :five_minute_rate,
        :fifteen_minute_rate, :mean_rate
      ]
    when Metriks::Counter
      datapoints |= create_datapoints name, metric, time, [
        :count
      ]
    when Metriks::Gauge
      datapoints |= create_datapoints name, metric, time, [
        :value
      ]
    when Metriks::UtilizationTimer
      datapoints |= create_datapoints name, metric, time, [
        :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
      datapoints |= create_datapoints name, metric, time, [
        :count, :one_minute_rate, :five_minute_rate,
        :fifteen_minute_rate, :mean_rate,
        :min, :max, :mean, :stddev
      ], [
        :median, :get_95th_percentile
      ]
      when Metriks::Histogram
      datapoints |= create_datapoints name, metric, time, [
        :count, :min, :max, :mean, :stddev
      ], [
        :median, :get_95th_percentile
      ]
    end
  end
  datapoints
end

#log(level, msg) ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 33

def log(level, msg)
  if !@logger.nil?
    @logger.send level, msg
  end
end

#restart ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 65

def restart
  stop
  start
end

#start ⇒ Object 



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# File 'lib/metriks/opentsdb_reporter.rb', line 39

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 56

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 82

def submit(datapoints)
  return if datapoints.empty?

  index = 0
  length = @batch_size
  while index < datapoints.size
    to_send = nil
    if datapoints.size < (index + length)
      length = datapoints.size - index
    else
      length = @batch_size
    end
    jsonstr = datapoints[index, length].to_json
    RestClient.post "#{@hostname}/api/put",
      jsonstr,
      :content_type => :json, :accept => :json
    log "debug", "Sent #{length} metrics from #{index}"
    index += length
  end
  log "info", "Sent #{datapoints.size} metrics"
end