in lib/aws-xray-sdk/sampling/default_sampler.rb [41:59]
def sample_request?(sampling_req)
start unless @started
now = Time.now.to_i
if sampling_req.nil?
sampling_req = { service_type: @origin } if @origin
elsif !sampling_req.key?(:service_type)
sampling_req[:service_type] = @origin if @origin
end
matched_rule = @cache.get_matched_rule(sampling_req, now: now)
if !matched_rule.nil?
logger.debug %(Rule
process_matched_rule(matched_rule, now)
else
logger.warn %(No effective centralized sampling rule match. Fallback to local rules.)
@local_sampler.sample_request?(sampling_req)
end
end