PR to implement watsonx health check

llama_stack/providers/remote/inference/watsonx/config.py

@@ -32,6 +32,10 @@ class WatsonXConfig(BaseModel):
         default_factory=lambda: os.getenv("WATSONX_PROJECT_ID"),
         description="The Project ID key, only needed of using the hosted service",
     )
+    model_id: str | None = Field(
+        default_factory=lambda: os.getenv("WATSONX_MODEL_ID", "ibm/granite-3-8b-instruct"),
+        description="The Model ID key, only needed of using the hosted service",
+    )
     timeout: int = Field(
         default=60,
         description="Timeout for the HTTP requests",

llama_stack/providers/remote/inference/watsonx/watsonx.py

@@ -40,6 +40,10 @@ from llama_stack.apis.inference.inference import (
     TopKSamplingStrategy,
     TopPSamplingStrategy,
 )
+from llama_stack.providers.datatypes import (
+    HealthResponse,
+    HealthStatus,
+)
 from llama_stack.providers.utils.inference.model_registry import ModelRegistryHelper
 from llama_stack.providers.utils.inference.openai_compat import (
     OpenAICompatCompletionChoice,
@@ -76,6 +80,21 @@ class WatsonXInferenceAdapter(Inference, ModelRegistryHelper):
     async def shutdown(self) -> None:
         pass
 
+    async def health(self) -> HealthResponse:
+        """
+        Performs a health check by verifying connectivity to the Watsonx server.
+        This method is used by the Provider API to verify
+        that the service is running correctly.
+        Returns:
+            HealthResponse: A dictionary containing the health status.
+        """
+        try:
+            model = self._get_client(self._config.model_id)
+            model.generate("test")
+            return HealthResponse(status=HealthStatus.OK)
+        except Exception as ex:
+            return HealthResponse(status=HealthStatus.ERROR, message=f"Health check failed: {str(ex)}")
+
     async def completion(
         self,
         model_id: str,