fix: wrap provider error codes into HTTP Exceptions

src/codegate/llm_utils/llmclient.py

@@ -149,4 +149,4 @@ async def _complete_litellm(
 
         except Exception as e:
             logger.error(f"LiteLLM completion failed {model} ({content}): {e}")
-            return {}
+            raise e

src/codegate/providers/anthropic/provider.py

@@ -1,4 +1,5 @@
 import json
+import structlog
 from typing import Optional
 
 from fastapi import Header, HTTPException, Request
@@ -53,5 +54,16 @@ async def create_message(
             data = json.loads(body)
 
             is_fim_request = self._is_fim_request(request, data)
-            stream = await self.complete(data, x_api_key, is_fim_request)
+            try:
+                stream = await self.complete(data, x_api_key, is_fim_request)
+            except Exception as e:
+                #  check if we have an status code there
+                if hasattr(e, "status_code"):
+                    # log the exception
+                    logger = structlog.get_logger("codegate")
+                    logger.error("Error in AnthropicProvider completion", error=str(e))
+                    raise HTTPException(status_code=e.status_code, detail=str(e))  # type: ignore
+                else:
+                    # just continue raising the exception
+                    raise e
             return self._completion_handler.create_response(stream)

src/codegate/providers/llamacpp/provider.py

@@ -1,7 +1,8 @@
 import json
+import structlog
 from typing import Optional
 
-from fastapi import Request
+from fastapi import Request, HTTPException
 
 from codegate.pipeline.base import SequentialPipelineProcessor
 from codegate.pipeline.output import OutputPipelineProcessor
@@ -10,7 +11,7 @@
 from codegate.providers.llamacpp.normalizer import LLamaCppInputNormalizer, LLamaCppOutputNormalizer
 
 
-class LlamaCppProvider(BaseProvider):
+class LlamaCppProvider(BaseProvider):    
     def __init__(
         self,
         pipeline_processor: Optional[SequentialPipelineProcessor] = None,
@@ -46,7 +47,24 @@ async def create_completion(
         ):
             body = await request.body()
             data = json.loads(body)
+            logger = structlog.get_logger("codegate")
 
             is_fim_request = self._is_fim_request(request, data)
-            stream = await self.complete(data, None, is_fim_request=is_fim_request)
+            try:
+                stream = await self.complete(data, None, is_fim_request=is_fim_request)
+            except RuntimeError as e:
+                # propagate as error 500
+                logger.error("Error in LlamaCppProvider completion", error=str(e))
+                raise HTTPException(status_code=500, detail=str(e))
+            except ValueError as e:
+                # capture well known exceptions
+                logger.error("Error in LlamaCppProvider completion", error=str(e))
+                if str(e).startswith("Model path does not exist") or \
+                        str(e).startswith("No file found"):
+                    raise HTTPException(status_code=404, detail=str(e))
+                elif "exceed" in str(e):
+                    raise HTTPException(status_code=429, detail=str(e))
+                else:
+                    # just continue raising the exception
+                    raise e
             return self._completion_handler.create_response(stream)

src/codegate/providers/ollama/provider.py

@@ -1,7 +1,9 @@
 import json
 from typing import Optional
 
-from fastapi import Request
+from fastapi import Request, HTTPException
+import httpx
+import structlog
 
 from codegate.config import Config
 from codegate.pipeline.base import SequentialPipelineProcessor
@@ -58,5 +60,20 @@ async def create_completion(request: Request):
             data["base_url"] = self.base_url
 
             is_fim_request = self._is_fim_request(request, data)
-            stream = await self.complete(data, api_key=None, is_fim_request=is_fim_request)
+            try:
+                stream = await self.complete(data, api_key=None, is_fim_request=is_fim_request)
+            except httpx.ConnectError as e:
+                logger = structlog.get_logger("codegate")
+                logger.error("Error in OllamaProvider completion", error=str(e))
+                raise HTTPException(status_code=503, detail="Ollama service is unavailable")
+            except Exception as e:
+                #  check if we have an status code there
+                if hasattr(e, "status_code"):
+                    # log the exception
+                    logger = structlog.get_logger("codegate")
+                    logger.error("Error in OllamaProvider completion", error=str(e))
+                    raise HTTPException(status_code=e.status_code, detail=str(e))  # type: ignore
+                else:
+                    # just continue raising the exception
+                    raise e
             return self._completion_handler.create_response(stream)

src/codegate/providers/openai/provider.py

@@ -1,4 +1,5 @@
 import json
+import structlog
 from typing import Optional
 
 from fastapi import Header, HTTPException, Request
@@ -54,5 +55,16 @@ async def create_completion(
             data = json.loads(body)
 
             is_fim_request = self._is_fim_request(request, data)
-            stream = await self.complete(data, api_key, is_fim_request=is_fim_request)
+            try:
+                stream = await self.complete(data, api_key, is_fim_request=is_fim_request)
+            except Exception as e:
+                #  check if we have an status code there
+                if hasattr(e, "status_code"):
+                    logger = structlog.get_logger("codegate")
+                    logger.error("Error in OpenAIProvider completion", error=str(e))
+
+                    raise HTTPException(status_code=e.status_code, detail=str(e))  # type: ignore
+                else:
+                    # just continue raising the exception
+                    raise e
             return self._completion_handler.create_response(stream)

src/codegate/providers/vllm/provider.py

@@ -1,4 +1,5 @@
 import json
+import structlog
 from typing import Optional
 
 import httpx
@@ -52,7 +53,10 @@ async def get_models(authorization: str = Header(..., description="Bearer token"
 
             token = authorization.split(" ")[1]
             config = Config.get_config()
-            base_url = config.provider_urls.get("vllm")
+            if config:
+                base_url = config.provider_urls.get("vllm")
+            else:
+                base_url = ""
 
             async with httpx.AsyncClient() as client:
                 response = await client.get(
@@ -76,8 +80,22 @@ async def create_completion(
 
             # Add the vLLM base URL to the request
             config = Config.get_config()
-            data["base_url"] = config.provider_urls.get("vllm")
+            if config:
+                data["base_url"] = config.provider_urls.get("vllm")
+            else:
+                data["base_url"] = ""
 
             is_fim_request = self._is_fim_request(request, data)
-            stream = await self.complete(data, api_key, is_fim_request=is_fim_request)
+            try:
+                stream = await self.complete(data, api_key, is_fim_request=is_fim_request)
+            except Exception as e:
+                #  check if we have an status code there
+                if hasattr(e, "status_code"):
+                    logger = structlog.get_logger("codegate")
+                    logger.error("Error in VLLMProvider completion", error=str(e))
+
+                    raise HTTPException(status_code=e.status_code, detail=str(e))  # type: ignore
+                else:
+                    # just continue raising the exception
+                    raise e
             return self._completion_handler.create_response(stream)