Bring back NUMERIC_TAGS

Author: majorgreys

ddtrace/constants.py

@@ -3,3 +3,5 @@
 SAMPLING_PRIORITY_KEY = '_sampling_priority_v1'
 ANALYTICS_SAMPLE_RATE_KEY = '_dd1.sr.eausr'
 ORIGIN_KEY = '_dd.origin'
+
+NUMERIC_TAGS = (ANALYTICS_SAMPLE_RATE_KEY, )

ddtrace/span.py

@@ -5,7 +5,7 @@
 import traceback
 
 from .compat import StringIO, stringify, iteritems, numeric_types
-from .constants import ANALYTICS_SAMPLE_RATE_KEY
+from .constants import NUMERIC_TAGS
 from .ext import errors
 from .internal.logger import get_logger
 
@@ -131,11 +131,11 @@ def set_tag(self, key, value):
             be ignored.
         """
 
-        if key is ANALYTICS_SAMPLE_RATE_KEY:
+        if key in NUMERIC_TAGS:
             try:
                 self.set_metric(key, float(value))
             except (TypeError, ValueError):
-                log.debug('error setting numeric metric {}:{}'.format(key, value))
+                log.debug("error setting numeric metric {}:{}".format(key, value))
 
             return
         try: