fix sampling_rule default values

Author: jj22ee

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/sampler/_sampling_rule.py

@@ -22,15 +22,16 @@ def __init__(
         Version=None,
     ):
         self.Attributes = Attributes if Attributes is not None else {}
-        self.FixedRate = FixedRate if FixedRate is not None else ""
+        self.FixedRate = FixedRate if FixedRate is not None else 0.0
         self.HTTPMethod = HTTPMethod if HTTPMethod is not None else ""
         self.Host = Host if Host is not None else ""
-        self.Priority = Priority if Priority is not None else ""
-        self.ReservoirSize = ReservoirSize if ReservoirSize is not None else ""
+        # Default to value with lower priority than default rule
+        self.Priority = Priority if Priority is not None else 10001
+        self.ReservoirSize = ReservoirSize if ReservoirSize is not None else 0
         self.ResourceARN = ResourceARN if ResourceARN is not None else ""
         self.RuleARN = RuleARN if RuleARN is not None else ""
         self.RuleName = RuleName if RuleName is not None else ""
         self.ServiceName = ServiceName if ServiceName is not None else ""
         self.ServiceType = ServiceType if ServiceType is not None else ""
         self.URLPath = URLPath if URLPath is not None else ""
-        self.Version = Version if Version is not None else ""
+        self.Version = Version if Version is not None else 0

aws-opentelemetry-distro/tests/amazon/opentelemetry/distro/sampler/test_aws_xray_sampling_client.py

@@ -48,18 +48,18 @@ def test_default_values_used_when_missing_properties_in_sampling_rule(self, mock
 
         sampling_rule = sampling_rules[0]
         self.assertEqual(sampling_rule.Attributes, {})
-        self.assertEqual(sampling_rule.FixedRate, "")
+        self.assertEqual(sampling_rule.FixedRate, 0.0)
         self.assertEqual(sampling_rule.HTTPMethod, "")
         self.assertEqual(sampling_rule.Host, "")
-        self.assertEqual(sampling_rule.Priority, "")
-        self.assertEqual(sampling_rule.ReservoirSize, "")
+        self.assertEqual(sampling_rule.Priority, 10001)
+        self.assertEqual(sampling_rule.ReservoirSize, 0)
         self.assertEqual(sampling_rule.ResourceARN, "")
         self.assertEqual(sampling_rule.RuleARN, "")
         self.assertEqual(sampling_rule.RuleName, "")
         self.assertEqual(sampling_rule.ServiceName, "")
         self.assertEqual(sampling_rule.ServiceType, "")
         self.assertEqual(sampling_rule.URLPath, "")
-        self.assertEqual(sampling_rule.Version, "")
+        self.assertEqual(sampling_rule.Version, 0)
 
     @patch("requests.post")
     def test_get_three_sampling_rules(self, mock_post=None):