fix(bedrock): keep dotted model names in cross-region profile IDs (us.openai.gpt-5.6-sol)

packages/opentelemetry-instrumentation-bedrock/opentelemetry/instrumentation/bedrock/__init__.py

@@ -1009,7 +1009,7 @@ def _get_vendor_model(modelId):
 def _cross_region_check(value):
     prefixes = ["us", "us-gov", "eu", "apac"]
     if any(value.startswith(prefix + ".") for prefix in prefixes):
-        parts = value.split(".")
+        parts = value.split(".", 2)
         if len(parts) > 2:
             parts.pop(0)
         return parts[0], parts[1]

packages/opentelemetry-instrumentation-bedrock/tests/test_model_id_parsing.py

@@ -0,0 +1,24 @@
+"""Model IDs whose model name contains a dot (openai.gpt-5.6-sol) must survive
+the cross-region prefix strip, the same way the prefix-less form does."""
+
+from opentelemetry.instrumentation.bedrock import _get_vendor_model
+
+
+class TestDottedModelName:
+    def test_regional_profile_keeps_full_model_name(self):
+        assert _get_vendor_model("us.openai.gpt-5.6-sol") == ("aws.bedrock", "openai", "gpt-5.6-sol")
+
+    def test_regional_profile_arn_keeps_full_model_name(self):
+        arn = "arn:aws:bedrock:us-east-1:111122223333:inference-profile/us.openai.gpt-5.6-sol"
+        assert _get_vendor_model(arn) == ("aws.bedrock", "openai", "gpt-5.6-sol")
+
+    def test_prefixless_id_unchanged(self):
+        assert _get_vendor_model("openai.gpt-5.6-sol") == ("aws.bedrock", "openai", "gpt-5.6-sol")
+
+    def test_undotted_profile_unchanged(self):
+        assert _get_vendor_model("us.openai.gpt-6-sol") == ("aws.bedrock", "openai", "gpt-6-sol")
+        assert _get_vendor_model("eu.anthropic.claude-3-7-sonnet-20250219-v1:0") == (
+            "aws.bedrock",
+            "anthropic",
+            "claude-3-7-sonnet-20250219-v1:0",
+        )