lib/opentelemetry/sdk/trace/samplers/probability_sampler.rb in opentelemetry-sdk-0.5.0 vs lib/opentelemetry/sdk/trace/samplers/probability_sampler.rb in opentelemetry-sdk-0.5.1

@@ -14,11 +14,11 @@
         class ProbabilitySampler
           attr_reader :description
 
           def initialize(probability, ignore_parent:, apply_to_remote_parent:, apply_to_all_spans:)
             @probability = probability
-            @id_upper_bound = format('%016x', (probability * (2**64 - 1)).ceil)
+            @id_upper_bound = (probability * (2**64 - 1)).ceil
             @use_parent_sampled_flag = !ignore_parent
             @apply_to_remote_parent = apply_to_remote_parent
             @apply_to_all_spans = apply_to_all_spans
             @description = format('ProbabilitySampler{%.6f}', probability)
           end
@@ -53,10 +53,10 @@
           def sample_trace_id_for_child?(parent_context, trace_id)
             (@apply_to_all_spans || (@apply_to_remote_parent && parent_context.remote?)) && sample_trace_id?(trace_id)
           end
 
           def sample_trace_id?(trace_id)
-            @probability == 1.0 || trace_id[16, 16] < @id_upper_bound
+            @probability == 1.0 || trace_id[8, 8].unpack1('Q>') < @id_upper_bound
           end
         end
       end
     end
   end