Class: Datadog::Core::Telemetry::Component

Inherits:
Object
  • Object
show all
Includes:
Logging, Utils::Forking
Defined in:
lib/datadog/core/telemetry/component.rb

Overview

Telemetry entrypoint, coordinates sending telemetry events at various points in app lifecycle.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Logging

#error, #report

Methods included from Utils::Forking

#after_fork!, extended, #fork_pid, #forked?, included, #update_fork_pid!

Constructor Details

#initialize(heartbeat_interval_seconds:, metrics_aggregation_interval_seconds:, dependency_collection:, http_transport:, shutdown_timeout_seconds:, enabled: true, metrics_enabled: true) ⇒ Component

Returns a new instance of Component.

Parameters:

  • enabled (Boolean) (defaults to: true) —

    Determines whether telemetry events should be sent to the API

  • metrics_enabled (Boolean) (defaults to: true) —

    Determines whether telemetry metrics should be sent to the API

  • heartbeat_interval_seconds (Float) —

    How frequently heartbeats will be reported, in seconds.

  • metrics_aggregation_interval_seconds (Float) —

    How frequently metrics will be aggregated, in seconds.

  • dependency_collection (Boolean) —

    Whether to send the ‘app-dependencies-loaded` event



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# File 'lib/datadog/core/telemetry/component.rb', line 63

def initialize(
  heartbeat_interval_seconds:,
  metrics_aggregation_interval_seconds:,
  dependency_collection:,
  http_transport:,
  shutdown_timeout_seconds:,
  enabled: true,
  metrics_enabled: true
)
  @enabled = enabled
  @stopped = false

  @metrics_manager = MetricsManager.new(
    enabled: enabled && metrics_enabled,
    aggregation_interval: metrics_aggregation_interval_seconds
  )

  @worker = Telemetry::Worker.new(
    enabled: @enabled,
    heartbeat_interval_seconds: heartbeat_interval_seconds,
    metrics_aggregation_interval_seconds: metrics_aggregation_interval_seconds,
    emitter: Emitter.new(http_transport: http_transport),
    metrics_manager: @metrics_manager,
    dependency_collection: dependency_collection,
    shutdown_timeout: shutdown_timeout_seconds
  )
  @worker.start
end

Instance Attribute Details

#enabled ⇒ Object (readonly)

Returns the value of attribute enabled.



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# File 'lib/datadog/core/telemetry/component.rb', line 18

def enabled
  @enabled
end

Class Method Details

.build(settings, agent_settings, logger) ⇒ Object 



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# File 'lib/datadog/core/telemetry/component.rb', line 23

def self.build(settings, agent_settings, logger)
  enabled = settings.telemetry.enabled
  agentless_enabled = settings.telemetry.agentless_enabled

  if !agentless_enabled && agent_settings.adapter != Datadog::Core::Configuration::Ext::Agent::HTTP::ADAPTER
    enabled = false
    logger.debug { "Telemetry disabled. Agent network adapter not supported: #{agent_settings.adapter}" }
  end

  if agentless_enabled && settings.api_key.nil?
    enabled = false
    logger.debug { 'Telemetry disabled. Agentless telemetry requires an DD_API_KEY variable to be set.' }
  end

  transport = if agentless_enabled
                Datadog::Core::Telemetry::Http::Transport.build_agentless_transport(
                  api_key: settings.api_key,
                  dd_site: settings.site,
                  url_override: settings.telemetry.agentless_url_override
                )
              else
                Datadog::Core::Telemetry::Http::Transport.build_agent_transport(agent_settings)
              end

  Telemetry::Component.new(
    http_transport: transport,
    enabled: enabled,
    metrics_enabled: enabled && settings.telemetry.metrics_enabled,
    heartbeat_interval_seconds: settings.telemetry.heartbeat_interval_seconds,
    metrics_aggregation_interval_seconds: settings.telemetry.metrics_aggregation_interval_seconds,
    dependency_collection: settings.telemetry.dependency_collection,
    shutdown_timeout_seconds: settings.telemetry.shutdown_timeout_seconds,
  )
end

Instance Method Details

#client_configuration_change!(changes) ⇒ Object

Report configuration changes caused by Remote Configuration.



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# File 'lib/datadog/core/telemetry/component.rb', line 123

def client_configuration_change!(changes)
  return if !@enabled || forked?

  @worker.enqueue(Event::AppClientConfigurationChange.new(changes, 'remote_config'))
end

#dec(namespace, metric_name, value, tags: {}, common: true) ⇒ Object

Decremenets a count metric.



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# File 'lib/datadog/core/telemetry/component.rb', line 135

def dec(namespace, metric_name, value, tags: {}, common: true)
  @metrics_manager.dec(namespace, metric_name, value, tags: tags, common: common)
end

#disable! ⇒ Object 



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# File 'lib/datadog/core/telemetry/component.rb', line 92

def disable!
  @enabled = false
  @worker.enabled = false
end

#distribution(namespace, metric_name, value, tags: {}, common: true) ⇒ Object

Tracks distribution metric.



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# File 'lib/datadog/core/telemetry/component.rb', line 150

def distribution(namespace, metric_name, value, tags: {}, common: true)
  @metrics_manager.distribution(namespace, metric_name, value, tags: tags, common: common)
end

#emit_closing! ⇒ Object 



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# File 'lib/datadog/core/telemetry/component.rb', line 104

def emit_closing!
  return if !@enabled || forked?

  @worker.enqueue(Event::AppClosing.new)
end

#gauge(namespace, metric_name, value, tags: {}, common: true) ⇒ Object

Tracks gauge metric.



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# File 'lib/datadog/core/telemetry/component.rb', line 140

def gauge(namespace, metric_name, value, tags: {}, common: true)
  @metrics_manager.gauge(namespace, metric_name, value, tags: tags, common: common)
end

#inc(namespace, metric_name, value, tags: {}, common: true) ⇒ Object

Increments a count metric.



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# File 'lib/datadog/core/telemetry/component.rb', line 130

def inc(namespace, metric_name, value, tags: {}, common: true)
  @metrics_manager.inc(namespace, metric_name, value, tags: tags, common: common)
end

#integrations_change! ⇒ Object 



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# File 'lib/datadog/core/telemetry/component.rb', line 110

def integrations_change!
  return if !@enabled || forked?

  @worker.enqueue(Event::AppIntegrationsChange.new)
end

#log!(event) ⇒ Object 



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# File 'lib/datadog/core/telemetry/component.rb', line 116

def log!(event)
  return unless @enabled || forked?

  @worker.enqueue(event)
end

#rate(namespace, metric_name, value, tags: {}, common: true) ⇒ Object

Tracks rate metric.



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# File 'lib/datadog/core/telemetry/component.rb', line 145

def rate(namespace, metric_name, value, tags: {}, common: true)
  @metrics_manager.rate(namespace, metric_name, value, tags: tags, common: common)
end

#stop! ⇒ Object 



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# File 'lib/datadog/core/telemetry/component.rb', line 97

def stop!
  return if @stopped

  @worker.stop(true)
  @stopped = true
end