feat: Batch encoding for TEI encoder

semantic_router/encoders/huggingface.py

@@ -211,18 +211,19 @@ def __call__(self, docs: List[str]) -> List[List[float]]:
         Raises:
             ValueError: If no embeddings are returned for a document.
         """
+
+        batch_size = 50
         embeddings = []
-        for d in docs:
+        for i in range(0, len(docs), batch_size):
+            batch = docs[i : i + batch_size]
             try:
-                output = self.query({"inputs": d, "parameters": {}})
-                if not output or len(output) == 0:
+                outputs = self.query({"inputs": batch, "parameters": {}})
+                if not outputs or len(outputs) == 0:
                     raise ValueError("No embeddings returned from the query.")
-                embeddings.append(output)
-
+                embeddings = embeddings + outputs
             except Exception as e:
-                raise ValueError(
-                    f"No embeddings returned for document. Error: {e}"
-                ) from e
+                raise ValueError(f"No embeddings returned for batch. Error: {e}") from e
+
         return embeddings
 
     def query(self, payload, max_retries=3, retry_interval=5):
@@ -261,6 +262,7 @@ def query(self, payload, max_retries=3, retry_interval=5):
                         continue
                 else:
                     response.raise_for_status()
+                    break
 
             except requests.exceptions.RequestException:
                 if attempt < max_retries - 1: