Feat/huggingface embedding support (#1211)

Co-authored-by: StyleZhang <jasonapring2015@outlook.com>

api/core/model_providers/models/embedding/huggingface_embedding.py

@@ -0,0 +1,22 @@
+from core.model_providers.error import LLMBadRequestError
+from core.model_providers.providers.base import BaseModelProvider
+from core.third_party.langchain.embeddings.huggingface_hub_embedding import HuggingfaceHubEmbeddings
+from core.model_providers.models.embedding.base import BaseEmbedding
+
+
+class HuggingfaceEmbedding(BaseEmbedding):
+    def __init__(self, model_provider: BaseModelProvider, name: str):
+        credentials = model_provider.get_model_credentials(
+            model_name=name,
+            model_type=self.type
+        )
+
+        client = HuggingfaceHubEmbeddings(
+            model=name,
+            **credentials
+        )
+
+        super().__init__(model_provider, client, name)
+
+    def handle_exceptions(self, ex: Exception) -> Exception:
+        return LLMBadRequestError(f"Huggingface embedding: {str(ex)}")