feat: URL Handling in OpenAIEmbedding to Align with OpenAIModel (#1593)

Co-authored-by: Wendong-Fan <[email protected]>

camel/embeddings/openai_embedding.py

@@ -30,6 +30,8 @@ class OpenAIEmbedding(BaseEmbedding[str]):
         model_type (EmbeddingModelType, optional): The model type to be
             used for text embeddings.
             (default: :obj:`TEXT_EMBEDDING_3_SMALL`)
+        url (Optional[str], optional): The url to the OpenAI service.
+            (default: :obj:`None`)
         api_key (str, optional): The API key for authenticating with the
             OpenAI service. (default: :obj:`None`)
         dimensions (int, optional): The text embedding output dimensions.
@@ -49,6 +51,7 @@ def __init__(
         model_type: EmbeddingModelType = (
             EmbeddingModelType.TEXT_EMBEDDING_3_SMALL
         ),
+        url: str | None = None,
         api_key: str | None = None,
         dimensions: int | NotGiven = NOT_GIVEN,
     ) -> None:
@@ -61,7 +64,13 @@ def __init__(
             assert isinstance(dimensions, int)
             self.output_dim = dimensions
         self._api_key = api_key or os.environ.get("OPENAI_API_KEY")
-        self.client = OpenAI(timeout=180, max_retries=3, api_key=self._api_key)
+        self._url = url or os.environ.get("OPENAI_API_BASE_URL")
+        self.client = OpenAI(
+            timeout=180,
+            max_retries=3,
+            base_url=self._url,
+            api_key=self._api_key,
+        )
 
     def embed_list(
         self,