fix(bedrock): detect global cross-region inference profile prefix

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

@@ -1007,7 +1007,7 @@ def _get_vendor_model(modelId):
 
 
 def _cross_region_check(value):
-    prefixes = ["us", "us-gov", "eu", "apac"]
+    prefixes = ["us", "us-gov", "eu", "apac", "global"]
     if any(value.startswith(prefix + ".") for prefix in prefixes):
         parts = value.split(".")
         if len(parts) > 2:

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

@@ -0,0 +1,66 @@
+"""Cross-region inference profile parsing tests.
+
+Covers _cross_region_check / _get_vendor_model — the pure functions that derive
+(provider, model_vendor, model) from a Bedrock modelId. The model_vendor they
+return drives span_utils' per-vendor branching (set_model_message_span_attributes,
+set_model_choice_span_attributes, _set_finish_reasons_unconditionally), so a wrong
+vendor silently drops prompt/completion/finish-reason attributes.
+
+The AWS "global." cross-region inference profile prefix (currently Claude Sonnet 4)
+must be recognized alongside the regional prefixes (us / us-gov / eu / apac):
+https://docs.aws.amazon.com/bedrock/latest/userguide/inference-profiles-support.html#inference-profiles-support-system
+"""
+
+from opentelemetry.instrumentation.bedrock import (
+    _cross_region_check,
+    _get_vendor_model,
+)
+
+
+class TestCrossRegionCheck:
+    """_cross_region_check strips the region prefix and returns (vendor, model)."""
+
+    def test_global_prefix_strips_to_vendor_and_model(self):
+        # global. is a real cross-region inference profile prefix (Claude Sonnet 4).
+        vendor, model = _cross_region_check(
+            "global.anthropic.claude-sonnet-4-20250514-v1:0"
+        )
+        assert vendor == "anthropic"
+        assert model == "claude-sonnet-4-20250514-v1:0"
+
+    def test_regional_prefixes_strip_to_vendor_and_model(self):
+        for prefix in ["us", "us-gov", "eu", "apac"]:
+            vendor, model = _cross_region_check(
+                f"{prefix}.anthropic.claude-3-7-sonnet-20250219-v1:0"
+            )
+            assert vendor == "anthropic"
+            assert model == "claude-3-7-sonnet-20250219-v1:0"
+
+    def test_non_prefixed_model_id_splits_on_first_dot(self):
+        vendor, model = _cross_region_check("anthropic.claude-3-haiku-20240307-v1:0")
+        assert vendor == "anthropic"
+        assert model == "claude-3-haiku-20240307-v1:0"
+
+
+class TestGetVendorModelGlobalProfile:
+    """_get_vendor_model resolves a global. inference profile to the anthropic vendor."""
+
+    def test_global_inference_profile_id(self):
+        provider, model_vendor, model = _get_vendor_model(
+            "global.anthropic.claude-sonnet-4-20250514-v1:0"
+        )
+        assert model_vendor == "anthropic"
+        assert model == "claude-sonnet-4-20250514-v1:0"
+
+    def test_global_inference_profile_arn(self):
+        # The ARN form splits on ":" first, so the trailing version suffix (":0")
+        # is parsed out before _cross_region_check sees it (same as the regional
+        # ARN form). The load-bearing assertion is that the vendor resolves to
+        # "anthropic" and not "global".
+        arn = (
+            "arn:aws:bedrock:us-east-1:012345678901:inference-profile/"
+            "global.anthropic.claude-sonnet-4-20250514-v1:0"
+        )
+        provider, model_vendor, model = _get_vendor_model(arn)
+        assert model_vendor == "anthropic"
+        assert model.startswith("claude-sonnet-4-")