fix:graph retrieve bug

dbgpt/app/scene/chat_knowledge/v1/chat.py

@@ -98,6 +98,7 @@ def __init__(self, chat_param: Dict):
             top_k=retriever_top_k,
             query_rewrite=query_rewrite,
             rerank=reranker,
+            llm_model=self.llm_model,
         )
 
         self.prompt_template.template_is_strict = False

dbgpt/serve/rag/retriever/knowledge_space.py

@@ -4,6 +4,8 @@
 from dbgpt.component import ComponentType
 from dbgpt.configs.model_config import EMBEDDING_MODEL_CONFIG
 from dbgpt.core import Chunk
+from dbgpt.model import DefaultLLMClient
+from dbgpt.model.cluster import WorkerManagerFactory
 from dbgpt.rag.embedding.embedding_factory import EmbeddingFactory
 from dbgpt.rag.retriever import EmbeddingRetriever, QueryRewrite, Ranker
 from dbgpt.rag.retriever.base import BaseRetriever
@@ -26,6 +28,7 @@ def __init__(
         top_k: Optional[int] = 4,
         query_rewrite: Optional[QueryRewrite] = None,
         rerank: Optional[Ranker] = None,
+        llm_model: Optional[str] = None,
     ):
         """
         Args:
@@ -40,6 +43,7 @@ def __init__(
         self._top_k = top_k
         self._query_rewrite = query_rewrite
         self._rerank = rerank
+        self._llm_model = llm_model
         embedding_factory = CFG.SYSTEM_APP.get_component(
             "embedding_factory", EmbeddingFactory
         )
@@ -50,9 +54,19 @@ def __init__(
 
         space_dao = KnowledgeSpaceDao()
         space = space_dao.get_one({"id": space_id})
-        config = VectorStoreConfig(name=space.name, embedding_fn=embedding_fn)
+        worker_manager = CFG.SYSTEM_APP.get_component(
+            ComponentType.WORKER_MANAGER_FACTORY, WorkerManagerFactory
+        ).create()
+        llm_client = DefaultLLMClient(worker_manager=worker_manager)
+        config = VectorStoreConfig(
+            name=space.name,
+            embedding_fn=embedding_fn,
+            llm_client=llm_client,
+            llm_model=self._llm_model,
+        )
+
         self._vector_store_connector = VectorStoreConnector(
-            vector_store_type=CFG.VECTOR_STORE_TYPE,
+            vector_store_type=space.vector_type,
             vector_store_config=config,
         )
         self._executor = CFG.SYSTEM_APP.get_component(
@@ -141,7 +155,6 @@ async def _aretrieve_with_score(
         Return:
             List[Chunk]: list of chunks with score.
         """
-        candidates_with_score = await blocking_func_to_async(
-            self._executor, self._retrieve_with_score, query, score_threshold, filters
+        return await self._retriever_chain.aretrieve_with_scores(
+            query, score_threshold, filters
         )
-        return candidates_with_score

dbgpt/serve/rag/retriever/retriever_chain.py

@@ -38,17 +38,20 @@ def _retrieve(
     async def _aretrieve(
         self, query: str, filters: Optional[MetadataFilters] = None
     ) -> List[Chunk]:
-        """Retrieve knowledge chunks.
+        """Async retrieve knowledge chunks.
         Args:
             query (str): query text
             filters: (Optional[MetadataFilters]) metadata filters.
         Return:
             List[Chunk]: list of chunks
         """
-        candidates = await blocking_func_to_async(
-            self._executor, self._retrieve, query, filters
-        )
-        return candidates
+        for retriever in self._retrievers:
+            candidates = await retriever.aretrieve(
+                query=query, filters=filters
+            )
+            if candidates:
+                return candidates
+        return []
 
     def _retrieve_with_score(
         self,
@@ -85,7 +88,10 @@ async def _aretrieve_with_score(
         Return:
             List[Chunk]: list of chunks with score
         """
-        candidates_with_score = await blocking_func_to_async(
-            self._executor, self._retrieve_with_score, query, score_threshold, filters
-        )
-        return candidates_with_score
+        for retriever in self._retrievers:
+            candidates_with_scores = await retriever.aretrieve_with_scores(
+                query=query, score_threshold=score_threshold, filters=filters
+            )
+            if candidates_with_scores:
+                return candidates_with_scores
+        return []