Class: Monitoring::OpenCensusMonitoringRegistry

Inherits:
BaseMonitoringRegistry show all
Defined in:
lib/fluent/plugin/monitoring.rb

Overview

OpenCensus implementation of the monitoring registry.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(project_id, monitored_resource, gcm_service_address) ⇒ OpenCensusMonitoringRegistry

Returns a new instance of OpenCensusMonitoringRegistry.



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# File 'lib/fluent/plugin/monitoring.rb', line 95

def initialize(project_id, monitored_resource, gcm_service_address)
  super
  require 'opencensus'
  require 'opencensus-stackdriver'
  @log = $log # rubocop:disable Style/GlobalVars
  @project_id = project_id
  @metrics_monitored_resource = monitored_resource
  @gcm_service_address = gcm_service_address
  @recorders = {}
  @exporters = {}
end

Class Method Details

.name ⇒ Object 



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# File 'lib/fluent/plugin/monitoring.rb', line 91

def self.name
  'opencensus'
end

Instance Method Details

#counter(name, labels, docstring, prefix) ⇒ Object 



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# File 'lib/fluent/plugin/monitoring.rb', line 107

def counter(name, labels, docstring, prefix)
  translator = MetricTranslator.new(name, labels)
  measure = OpenCensus::Stats::MeasureRegistry.get(translator.name)
  if measure.nil?
    measure = OpenCensus::Stats.create_measure_int(
      name: translator.name,
      unit: OpenCensus::Stats::Measure::UNIT_NONE,
      description: docstring
    )
  end
  unless @exporters.keys.include?(prefix)
    @recorders[prefix] = OpenCensus::Stats.ensure_recorder
    @exporters[prefix] = \
      OpenCensus::Stats::Exporters::Stackdriver.new(
        project_id: @project_id,
        metric_prefix: prefix,
        resource_type: @metrics_monitored_resource.type,
        resource_labels: @metrics_monitored_resource.labels,
        gcm_service_address: @gcm_service_address
      )
  end
  OpenCensus::Stats.create_and_register_view(
    name: translator.name,
    measure: measure,
    aggregation: OpenCensus::Stats.create_sum_aggregation,
    description: docstring,
    columns: translator.view_labels.map(&:to_s)
  )
  OpenCensusCounter.new(@recorders[prefix], measure, translator)
rescue StandardError => e
  @log.warn "Failed to count metrics for #{name}.", error: e
  raise e
end

#export ⇒ Object 



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# File 'lib/fluent/plugin/monitoring.rb', line 141

def export
  @exporters.keys.each do |prefix|
    @exporters[prefix].export @recorders[prefix].views_data
  end
rescue StandardError => e
  @log.warn 'Failed to export some metrics.', error: e
  raise e
end