feat: Add Hologres as a VDB & FullText DB choice (#32830)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Crazywoola <100913391+crazywoola@users.noreply.github.com>

api/configs/middleware/__init__.py

@@ -26,6 +26,7 @@ from .vdb.chroma_config import ChromaConfig
 from .vdb.clickzetta_config import ClickzettaConfig
 from .vdb.couchbase_config import CouchbaseConfig
 from .vdb.elasticsearch_config import ElasticsearchConfig
+from .vdb.hologres_config import HologresConfig
 from .vdb.huawei_cloud_config import HuaweiCloudConfig
 from .vdb.iris_config import IrisVectorConfig
 from .vdb.lindorm_config import LindormConfig
@@ -347,6 +348,7 @@ class MiddlewareConfig(
     AnalyticdbConfig,
     ChromaConfig,
     ClickzettaConfig,
+    HologresConfig,
     HuaweiCloudConfig,
     IrisVectorConfig,
     MilvusConfig,

api/configs/middleware/vdb/hologres_config.py

@@ -0,0 +1,68 @@
+from holo_search_sdk.types import BaseQuantizationType, DistanceType, TokenizerType
+from pydantic import Field
+from pydantic_settings import BaseSettings
+
+
+class HologresConfig(BaseSettings):
+    """
+    Configuration settings for Hologres vector database.
+
+    Hologres is compatible with PostgreSQL protocol.
+    access_key_id is used as the PostgreSQL username,
+    and access_key_secret is used as the PostgreSQL password.
+    """
+
+    HOLOGRES_HOST: str | None = Field(
+        description="Hostname or IP address of the Hologres instance.",
+        default=None,
+    )
+
+    HOLOGRES_PORT: int = Field(
+        description="Port number for connecting to the Hologres instance.",
+        default=80,
+    )
+
+    HOLOGRES_DATABASE: str | None = Field(
+        description="Name of the Hologres database to connect to.",
+        default=None,
+    )
+
+    HOLOGRES_ACCESS_KEY_ID: str | None = Field(
+        description="Alibaba Cloud AccessKey ID, also used as the PostgreSQL username.",
+        default=None,
+    )
+
+    HOLOGRES_ACCESS_KEY_SECRET: str | None = Field(
+        description="Alibaba Cloud AccessKey Secret, also used as the PostgreSQL password.",
+        default=None,
+    )
+
+    HOLOGRES_SCHEMA: str = Field(
+        description="Schema name in the Hologres database.",
+        default="public",
+    )
+
+    HOLOGRES_TOKENIZER: TokenizerType = Field(
+        description="Tokenizer for full-text search index (e.g., 'jieba', 'ik', 'standard', 'simple').",
+        default="jieba",
+    )
+
+    HOLOGRES_DISTANCE_METHOD: DistanceType = Field(
+        description="Distance method for vector index (e.g., 'Cosine', 'Euclidean', 'InnerProduct').",
+        default="Cosine",
+    )
+
+    HOLOGRES_BASE_QUANTIZATION_TYPE: BaseQuantizationType = Field(
+        description="Base quantization type for vector index (e.g., 'rabitq', 'sq8', 'fp16', 'fp32').",
+        default="rabitq",
+    )
+
+    HOLOGRES_MAX_DEGREE: int = Field(
+        description="Max degree (M) parameter for HNSW vector index.",
+        default=64,
+    )
+
+    HOLOGRES_EF_CONSTRUCTION: int = Field(
+        description="ef_construction parameter for HNSW vector index.",
+        default=400,
+    )