Fix: use pydantic pattern; handle httpx RequestError in gateway and qdrant

clip/main.py

@@ -39,7 +39,7 @@ class AnalyzeRequest(BaseModel):
 
 class EmbedRequest(BaseModel):
     url: Optional[str] = None
-    backend: Optional[str] = Field(default="openclip", regex="^(openclip|hf)$")
+    backend: Optional[str] = Field(default="openclip", pattern="^(openclip|hf)$")
     model: Optional[str] = None
     pretrained: Optional[str] = None
 

gateway/main.py

@@ -59,7 +59,10 @@ async def _get_health(client: httpx.AsyncClient, base: str) -> Dict[str, Any]:
 
 
 async def _post_json(client: httpx.AsyncClient, url: str, payload: Dict[str, Any]) -> Dict[str, Any]:
+    try:
         r = await client.post(url, json=payload)
+    except httpx.RequestError as e:
+        raise HTTPException(status_code=502, detail=f"Upstream request failed {url}: {str(e)}")
     if r.status_code >= 400:
         raise HTTPException(status_code=502, detail=f"Upstream error {url}: {r.status_code} {r.text[:1000]}")
     try:
@@ -71,7 +74,10 @@ async def _post_json(client: httpx.AsyncClient, url: str, payload: Dict[str, Any
 
 async def _post_file(client: httpx.AsyncClient, url: str, data: bytes, fields: Dict[str, Any]) -> Dict[str, Any]:
     files = {"file": ("image", data, "application/octet-stream")}
+    try:
         r = await client.post(url, data={k: str(v) for k, v in fields.items()}, files=files)
+    except httpx.RequestError as e:
+        raise HTTPException(status_code=502, detail=f"Upstream request failed {url}: {str(e)}")
     if r.status_code >= 400:
         raise HTTPException(status_code=502, detail=f"Upstream error {url}: {r.status_code} {r.text[:1000]}")
     try:

qdrant/main.py

@@ -109,20 +109,32 @@ def _col(name: Optional[str]) -> str:
 async def _embed_url(url: str) -> List[float]:
     """Call the CLIP service to get an image embedding."""
     async with httpx.AsyncClient(timeout=30) as http:
+        try:
             r = await http.post(f"{CLIP_URL}/embed", json={"url": url})
+        except httpx.RequestError as e:
+            raise HTTPException(502, f"CLIP request failed: {str(e)}")
         if r.status_code >= 400:
             raise HTTPException(502, f"CLIP /embed error: {r.status_code} {r.text[:200]}")
+        try:
             return r.json()["vector"]
+        except Exception:
+            raise HTTPException(502, f"CLIP /embed returned non-JSON: {r.status_code} {r.text[:200]}")
 
 
 async def _embed_bytes(data: bytes) -> List[float]:
     """Call the CLIP service to embed uploaded file bytes."""
     async with httpx.AsyncClient(timeout=30) as http:
         files = {"file": ("image", data, "application/octet-stream")}
+        try:
             r = await http.post(f"{CLIP_URL}/embed/file", files=files)
+        except httpx.RequestError as e:
+            raise HTTPException(502, f"CLIP request failed: {str(e)}")
         if r.status_code >= 400:
             raise HTTPException(502, f"CLIP /embed/file error: {r.status_code} {r.text[:200]}")
+        try:
             return r.json()["vector"]
+        except Exception:
+            raise HTTPException(502, f"CLIP /embed/file returned non-JSON: {r.status_code} {r.text[:200]}")
 
 
 def _build_filter(metadata: Dict[str, Any]) -> Optional[Filter]: