fix:storage add collection bug (#2615)

Close #2595 
# Description
fix hybrid memory milvus create collection bug 

# How Has This Been Tested?

switch milvus for hybrid storage type.

# Snapshots:

Include snapshots for easier review.

# Checklist:

- [ ] My code follows the style guidelines of this project
- [ ] I have already rebased the commits and make the commit message
conform to the project standard.
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] Any dependent changes have been merged and published in downstream
modules

packages/dbgpt-core/src/dbgpt/storage/vector_store/base.py

@@ -201,3 +201,7 @@ class VectorStoreBase(IndexStoreBase, ABC):
     def truncate(self) -> List[str]:
         """Truncate the collection."""
         raise NotImplementedError
+
+    def create_collection(self, collection_name: str, **kwargs) -> Any:
+        """Create the collection."""
+        raise NotImplementedError

packages/dbgpt-ext/src/dbgpt_ext/storage/vector_store/chroma_store.py

@@ -139,16 +139,22 @@ class ChromaStore(VectorStoreBase):
             )
         collection_metadata = collection_metadata or {"hnsw:space": "cosine"}
 
-        self._collection = self._chroma_client.get_or_create_collection(
-            name=self._collection_name,
-            embedding_function=None,
-            metadata=collection_metadata,
+        self._collection = self.create_collection(
+            collection_name=self._collection_name,
+            collection_metadata=collection_metadata,
         )
 
     def get_config(self) -> ChromaVectorConfig:
         """Get the vector store config."""
         return self._vector_store_config
 
+    def create_collection(self, collection_name: str, **kwargs) -> Any:
+        return self._chroma_client.get_or_create_collection(
+            name=collection_name,
+            embedding_function=None,
+            metadata=kwargs.get("collection_metadata"),
+        )
+
     def similar_search(
         self, text, topk, filters: Optional[MetadataFilters] = None
     ) -> List[Chunk]:

packages/dbgpt-ext/src/dbgpt_ext/storage/vector_store/elastic_store.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import logging
 import os
 from dataclasses import dataclass, field
-from typing import List, Optional
+from typing import Any, List, Optional
 
 from dbgpt.core import Chunk, Embeddings
 from dbgpt.core.awel.flow import Parameter, ResourceCategory, register_resource
@@ -237,17 +237,11 @@ class ElasticStore(VectorStoreBase):
                     basic_auth=(self.username, self.password),
                 )
                 # create es index
-                if not self.vector_name_exists():
-                    self.es_client_python.indices.create(
-                        index=self.index_name, body=self.index_settings
-                    )
+                self.create_collection(collection_name=self.index_name)
             else:
                 logger.warning("ElasticSearch not set username and password")
                 self.es_client_python = Elasticsearch(f"http://{self.uri}:{self.port}")
-                if not self.vector_name_exists():
-                    self.es_client_python.indices.create(
-                        index=self.index_name, body=self.index_settings
-                    )
+                self.create_collection(collection_name=self.index_name)
         except ConnectionError:
             logger.error("ElasticSearch connection failed")
         except Exception as e:
@@ -283,6 +277,13 @@ class ElasticStore(VectorStoreBase):
         """Get the vector store config."""
         return self._vector_store_config
 
+    def create_collection(self, collection_name: str, **kwargs) -> Any:
+        if not self.vector_name_exists():
+            self.es_client_python.indices.create(
+                index=collection_name, body=self.index_settings
+            )
+        return True
+
     def load_document(
         self,
         chunks: List[Chunk],

packages/dbgpt-ext/src/dbgpt_ext/storage/vector_store/milvus_store.py

@@ -287,15 +287,14 @@ class MilvusStore(VectorStoreBase):
             password=self.password,
             alias="default",
         )
+        self.col = self.create_collection(collection_name=self.collection_name)
 
-    def init_schema_and_load(self, vector_name, documents) -> List[str]:
+    def create_collection(self, collection_name: str, **kwargs) -> Any:
         """Create a Milvus collection.
 
-        Create a Milvus collection, indexes it with HNSW, load document.
-
+        Create a Milvus collection, indexes it with HNSW, load document
         Args:
-            vector_name (Embeddings): your collection name.
-            documents (List[str]): Text to insert.
+            collection_name (str): your collection name.
         Returns:
             List[str]: document ids.
         """
@@ -321,25 +320,10 @@ class MilvusStore(VectorStoreBase):
                 alias="default",
                 # secure=self.secure,
             )
-        texts = [d.content for d in documents]
-        metadatas = [d.metadata for d in documents]
-        embeddings = self.embedding.embed_query(texts[0])
+        embeddings = self.embedding.embed_query(collection_name)
 
-        if utility.has_collection(self.collection_name):
-            self.col = Collection(self.collection_name, using=self.alias)
-            self.fields = []
-            for x in self.col.schema.fields:
-                self.fields.append(x.name)
-                if x.auto_id:
-                    self.fields.remove(x.name)
-                if x.is_primary:
-                    self.primary_field = x.name
-                if (
-                    x.dtype == DataType.FLOAT_VECTOR
-                    or x.dtype == DataType.BINARY_VECTOR
-                ):
-                    self.vector_field = x.name
-            return self._add_documents(texts, metadatas)
+        if utility.has_collection(collection_name):
+            return Collection(self.collection_name, using=self.alias)
             # return self.collection_name
 
         dim = len(embeddings)
@@ -349,12 +333,8 @@ class MilvusStore(VectorStoreBase):
         text_field = self.text_field
         metadata_field = self.metadata_field
         props_field = self.props_field
-        # self.text_field = text_field
-        collection_name = vector_name
         fields = []
-        max_length = 0
-        for y in texts:
-            max_length = max(max_length, len(y))
+        # max_length = 0
         # Create the text field
         fields.append(FieldSchema(text_field, DataType.VARCHAR, max_length=65535))
         # primary key field
@@ -375,8 +355,32 @@ class MilvusStore(VectorStoreBase):
         # milvus index
         collection.create_index(vector_field, index)
         collection.load()
-        schema = collection.schema
-        for x in schema.fields:
+        return collection
+
+    def _load_documents(self, documents) -> List[str]:
+        """Load documents into Milvus.
+
+        Load documents.
+
+        Args:
+            documents (List[str]): Text to insert.
+        Returns:
+            List[str]: document ids.
+        """
+        try:
+            from pymilvus import (
+                DataType,
+            )
+            from pymilvus.orm.types import infer_dtype_bydata  # noqa: F401
+        except ImportError:
+            raise ValueError(
+                "Could not import pymilvus python package. "
+                "Please install it with `pip install pymilvus`."
+            )
+        texts = [d.content for d in documents]
+        metadatas = [d.metadata for d in documents]
+        self.fields = []
+        for x in self.col.schema.fields:
             self.fields.append(x.name)
             if x.auto_id:
                 self.fields.remove(x.name)
@@ -384,9 +388,7 @@ class MilvusStore(VectorStoreBase):
                 self.primary_field = x.name
             if x.dtype == DataType.FLOAT_VECTOR or x.dtype == DataType.BINARY_VECTOR:
                 self.vector_field = x.name
-        ids = self._add_documents(texts, metadatas)
-
-        return ids
+        return self._add_documents(texts, metadatas)
 
     def _add_documents(
         self,
@@ -434,7 +436,7 @@ class MilvusStore(VectorStoreBase):
         ]
         doc_ids = []
         for doc_batch in batched_list:
-            doc_ids.extend(self.init_schema_and_load(self.collection_name, doc_batch))
+            doc_ids.extend(self._load_documents(doc_batch))
         doc_ids = [str(doc_id) for doc_id in doc_ids]
         return doc_ids
 
@@ -659,23 +661,23 @@ class MilvusStore(VectorStoreBase):
             if isinstance(metadata_filter.value, str):
                 expr = (
                     f"{self.props_field}['{metadata_filter.key}'] "
-                    f"{FilterOperator.EQ} '{metadata_filter.value}'"
+                    f"{FilterOperator.EQ.value} '{metadata_filter.value}'"
                 )
                 metadata_filters.append(expr)
             elif isinstance(metadata_filter.value, List):
                 expr = (
                     f"{self.props_field}['{metadata_filter.key}'] "
-                    f"{FilterOperator.IN} {metadata_filter.value}"
+                    f"{FilterOperator.IN.value} {metadata_filter.value}"
                 )
                 metadata_filters.append(expr)
             else:
                 expr = (
                     f"{self.props_field}['{metadata_filter.key}'] "
-                    f"{FilterOperator.EQ} {str(metadata_filter.value)}"
+                    f"{FilterOperator.EQ.value} {str(metadata_filter.value)}"
                 )
                 metadata_filters.append(expr)
         if len(metadata_filters) > 1:
-            metadata_filter_expr = f" {filters.condition} ".join(metadata_filters)
+            metadata_filter_expr = f" {filters.condition.value} ".join(metadata_filters)
         else:
             metadata_filter_expr = metadata_filters[0]
         return metadata_filter_expr

packages/dbgpt-ext/src/dbgpt_ext/storage/vector_store/oceanbase_store.py

@@ -312,6 +312,11 @@ class OceanBaseStore(VectorStoreBase):
             vidxs=vidx_params,
         )
 
+    def create_collection(self, collection_name: str, **kwargs) -> Any:
+        """Create the collection."""
+        embeddings = self.embedding_function.embed_documents([collection_name])
+        return self._create_table_with_index(embeddings)
+
     def load_document(self, chunks: List[Chunk]) -> List[str]:
         """Load document in vector database."""
         batch_size = 100

packages/dbgpt-ext/src/dbgpt_ext/storage/vector_store/pgvector_store.py

@@ -2,7 +2,7 @@
 
 import logging
 from dataclasses import dataclass, field
-from typing import List, Optional
+from typing import Any, List, Optional
 
 from dbgpt.core import Chunk, Embeddings
 from dbgpt.core.awel.flow import Parameter, ResourceCategory, register_resource
@@ -114,6 +114,10 @@ class PGVectorStore(VectorStoreBase):
         """Get the vector store config."""
         return self._vector_store_config
 
+    def create_collection(self, collection_name: str, **kwargs) -> Any:
+        """Create the collection."""
+        return self.vector_store_client.create_collection()
+
     def similar_search(
         self, text: str, topk: int, filters: Optional[MetadataFilters] = None
     ) -> List[Chunk]:

packages/dbgpt-ext/src/dbgpt_ext/storage/vector_store/weaviate_store.py

@@ -3,7 +3,7 @@
 import logging
 import os
 from dataclasses import dataclass, field
-from typing import List, Optional
+from typing import Any, List, Optional
 
 from dbgpt.core import Chunk, Embeddings
 from dbgpt.core.awel.flow import Parameter, ResourceCategory, register_resource
@@ -125,6 +125,10 @@ class WeaviateStore(VectorStoreBase):
         """Get the vector store config."""
         return self._vector_store_config
 
+    def create_collection(self, collection_name: str, **kwargs) -> Any:
+        """Create the collection."""
+        return self._default_schema()
+
     def similar_search(
         self, text: str, topk: int, filters: Optional[MetadataFilters] = None
     ) -> List[Chunk]:

packages/dbgpt-serve/src/dbgpt_serve/agent/agents/controller.py

@@ -142,7 +142,10 @@ class MultiAgents(BaseComponent, ABC):
         ).create()
 
         storage_manager = StorageManager.get_instance(self.system_app)
-        vector_store = storage_manager.create_vector_store(index_name="_agent_memory_")
+        index_name = "_agent_memory_"
+        vector_store = storage_manager.create_vector_store(index_name=index_name)
+        if not vector_store.vector_name_exists():
+            vector_store.create_collection(collection_name=index_name)
         embeddings = EmbeddingFactory.get_instance(self.system_app).create()
         short_term_memory = EnhancedShortTermMemory(
             embeddings, executor=executor, buffer_size=10