Types fix, slight optimization

This change because mypy isn't willing to believe the exponent is always positive. See python/typeshed#285.
c24t · Oct 25, 2019 · 381c41f · 381c41f
1 parent bdee2f9
commit 381c41f
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/opentelemetry-api/src/opentelemetry/trace/sampling.py b/opentelemetry-api/src/opentelemetry/trace/sampling.py
@@ -83,10 +83,11 @@ def __init__(self, rate: float):
     # The sampler checks the 8 high-order bytes of the trace ID to decide
     # whether to sample a given trace.
     CHECK_HIGH_BITS = 64
+    TRACE_ID_LIMIT = 2 ** CHECK_HIGH_BITS  # type: int
 
     @classmethod
     def get_bound_for_rate(cls, rate: float) -> int:
-        return round(rate * 2 ** cls.CHECK_HIGH_BITS)
+        return round(rate * cls.TRACE_ID_LIMIT)
 
     @property
     def rate(self) -> float: