class Datadog::Sampling::Rule
Sampling
rule that dictates if a span matches a specific criteria and what sampling strategy to apply in case of a positive match.
Attributes
matcher[R]
sampler[R]
Public Class Methods
new(matcher, sampler)
click to toggle source
@param [Matcher] matcher A matcher to verify span conformity against @param [Sampler] sampler A sampler to be consulted on a positive match
# File lib/ddtrace/sampling/rule.rb, line 18 def initialize(matcher, sampler) @matcher = matcher @sampler = sampler end
Public Instance Methods
match?(span)
click to toggle source
Evaluates if the provided `span` conforms to the `matcher`.
@param [Span] span @return [Boolean] whether this rules applies to the span @return [NilClass] if the matcher fails errs during evaluation
# File lib/ddtrace/sampling/rule.rb, line 28 def match?(span) @matcher.match?(span) rescue => e Datadog.logger.error("Matcher failed. Cause: #{e.message} Source: #{e.backtrace.first}") nil end