revert HostResourceDetector to private _HostResourceDetector

Assisted-by: Claude Sonnet 4.6

Author: MikeGoldsmith

opentelemetry-sdk/src/opentelemetry/sdk/_configuration/_resource.py

@@ -29,7 +29,7 @@
 from opentelemetry.sdk.resources import (
     _DEFAULT_RESOURCE,
     SERVICE_NAME,
-    HostResourceDetector,
+    _HostResourceDetector,
     ProcessResourceDetector,
     Resource,
 )
@@ -152,7 +152,7 @@ def _run_detectors(
     same key.
     """
     if detector_config.host is not None:
-        detected_attrs.update(HostResourceDetector().detect().attributes)
+        detected_attrs.update(_HostResourceDetector().detect().attributes)
     if detector_config.process is not None:
         detected_attrs.update(ProcessResourceDetector().detect().attributes)
 

opentelemetry-sdk/src/opentelemetry/sdk/resources/__init__.py

@@ -490,8 +490,10 @@ def detect(self) -> "Resource":
         )
 
 
-class HostResourceDetector(ResourceDetector):
-    """Detects host.name (hostname) and host.arch (CPU architecture)."""
+class _HostResourceDetector(ResourceDetector):  # type: ignore[reportUnusedClass]
+    """
+    The HostResourceDetector detects the hostname and architecture attributes.
+    """
 
     def detect(self) -> "Resource":
         return Resource(

opentelemetry-sdk/tests/resources/test_resources.py

@@ -49,7 +49,7 @@
     TELEMETRY_SDK_LANGUAGE,
     TELEMETRY_SDK_NAME,
     TELEMETRY_SDK_VERSION,
-    HostResourceDetector,
+    _HostResourceDetector,
     OsResourceDetector,
     OTELResourceDetector,
     ProcessResourceDetector,
@@ -813,7 +813,7 @@ class TestHostResourceDetector(unittest.TestCase):
     @patch("platform.machine", lambda: "AMD64")
     def test_host_resource_detector(self):
         resource = get_aggregated_resources(
-            [HostResourceDetector()],
+            [_HostResourceDetector()],
             Resource({}),
         )
         self.assertEqual(resource.attributes[HOST_NAME], "foo")