Class: OpenTelemetry::Exporters::Datadog::DatadogProbabilitySampler

Inherits:
SDK::Trace::Samplers::ProbabilitySampler
  • Object
show all
Defined in:
lib/opentelemetry/exporters/datadog/datadog_probability_sampler.rb

Overview

Implements sampling based on a probability but records all spans regardless.

Constant Summary collapse

DEFAULT = 
new(1.0,
ignore_parent: false,
apply_to_remote_parent: :root_spans_and_remote_parent,
apply_to_all_spans: :root_spans_and_remote_parent)

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.default_with_probability(probability = 1.0) ⇒ Object

Returns a new sampler. The probability of sampling a trace is equal to that of the specified probability.

Parameters:

  • probability (Numeric) (defaults to: 1.0) —

    The desired probability of sampling. Must be within [0.0, 1.0].

Raises:

  • (ArgumentError) 


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# File 'lib/opentelemetry/exporters/datadog/datadog_probability_sampler.rb', line 40

def self.default_with_probability(probability = 1.0)
  raise ArgumentError, 'probability must be in range [0.0, 1.0]' unless (0.0..1.0).include?(probability)

  new(probability,
      ignore_parent: false,
      apply_to_remote_parent: :root_spans_and_remote_parent,
      apply_to_all_spans: :root_spans_and_remote_parent)
end

Instance Method Details

#should_sample?(trace_id:, parent_context:, links:, name:, kind:, attributes:) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

See Samplers.

Returns:

  • (Boolean) 


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# File 'lib/opentelemetry/exporters/datadog/datadog_probability_sampler.rb', line 25

def should_sample?(trace_id:, parent_context:, links:, name:, kind:, attributes:)
  # Ignored for sampling decision: links, name, kind, attributes.

  if sample?(trace_id, parent_context)
    RECORD_AND_SAMPLED
  else
    RECORD
  end
end