Class: OpenTelemetry::SDK::Trace::Samplers::ProbabilitySampler Private

Inherits:
Object
  • Object
show all
Defined in:
lib/opentelemetry/sdk/trace/samplers/probability_sampler.rb

Overview

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

Implements sampling based on a probability.

Instance Method Summary collapse

Constructor Details

#initialize(probability, ignore_hints:, ignore_parent:, apply_to_remote_parent:, apply_to_all_spans:) ⇒ ProbabilitySampler

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.

Returns a new instance of ProbabilitySampler.



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# File 'lib/opentelemetry/sdk/trace/samplers/probability_sampler.rb', line 20

def initialize(probability, ignore_hints:, ignore_parent:, apply_to_remote_parent:, apply_to_all_spans:)
  @probability = probability
  @id_upper_bound = format('%016x', (probability * (2**64 - 1)).ceil)
  @ignored_hints = ignore_hints
  @use_parent_sampled_flag = !ignore_parent
  @apply_to_remote_parent = apply_to_remote_parent
  @apply_to_all_spans = apply_to_all_spans
end

Instance Method Details

#call(trace_id:, span_id:, parent_context:, hint:, links:, name:, kind:, attributes:) ⇒ Object

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.

Callable interface for probability sampler. See OpenTelemetry::SDK::Trace::Samplers.



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# File 'lib/opentelemetry/sdk/trace/samplers/probability_sampler.rb', line 32

def call(trace_id:, span_id:, parent_context:, hint:, links:, name:, kind:, attributes:)
  # Ignored for sampling decision: links, name, kind, attributes.

  hint = nil if @ignored_hints.include?(hint)

  sampled = sample?(hint, trace_id, parent_context)
  recording = hint == HINT_RECORD || sampled

  if sampled && recording
    RECORD_AND_SAMPLED
  elsif recording
    RECORD
  else
    NOT_RECORD
  end
end