feat: add OceanBase doc engine (#11228)

### What problem does this PR solve?

Add OceanBase doc engine. Close #5350

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

common/settings.py

@@ -27,6 +27,7 @@ from common.constants import SVR_QUEUE_NAME, Storage
 import rag.utils
 import rag.utils.es_conn
 import rag.utils.infinity_conn
+import rag.utils.ob_conn
 import rag.utils.opensearch_conn
 from rag.utils.azure_sas_conn import RAGFlowAzureSasBlob
 from rag.utils.azure_spn_conn import RAGFlowAzureSpnBlob
@@ -103,6 +104,7 @@ INFINITY = {}
 AZURE = {}
 S3 = {}
 MINIO = {}
+OB = {}
 OSS = {}
 OS = {}
 
@@ -227,7 +229,7 @@ def init_settings():
     FEISHU_OAUTH = get_base_config("oauth", {}).get("feishu")
     OAUTH_CONFIG = get_base_config("oauth", {})
 
-    global DOC_ENGINE, docStoreConn, ES, OS, INFINITY
+    global DOC_ENGINE, docStoreConn, ES, OB, OS, INFINITY
     DOC_ENGINE = os.environ.get("DOC_ENGINE", "elasticsearch")
     # DOC_ENGINE = os.environ.get('DOC_ENGINE', "opensearch")
     lower_case_doc_engine = DOC_ENGINE.lower()
@@ -240,6 +242,9 @@ def init_settings():
     elif lower_case_doc_engine == "opensearch":
         OS = get_base_config("os", {})
         docStoreConn = rag.utils.opensearch_conn.OSConnection()
+    elif lower_case_doc_engine == "oceanbase":
+        OB = get_base_config("oceanbase", {})
+        docStoreConn = rag.utils.ob_conn.OBConnection()
     else:
         raise Exception(f"Not supported doc engine: {DOC_ENGINE}")
 

conf/service_conf.yaml

@@ -28,6 +28,14 @@ os:
 infinity:
   uri: 'localhost:23817'
   db_name: 'default_db'
+oceanbase:
+  scheme: 'oceanbase' # set 'mysql' to create connection using mysql config
+  config:
+    db_name: 'test'
+    user: 'root@ragflow'
+    password: 'infini_rag_flow'
+    host: 'localhost'
+    port: 2881
 redis:
   db: 1
   password: 'infini_rag_flow'

docker/.env

@@ -7,6 +7,7 @@
 # Available options:
 # - `elasticsearch` (default)
 # - `infinity` (https://github.com/infiniflow/infinity)
+# - `oceanbase` (https://github.com/oceanbase/oceanbase)
 # - `opensearch` (https://github.com/opensearch-project/OpenSearch)
 DOC_ENGINE=${DOC_ENGINE:-elasticsearch}
 
@@ -62,6 +63,27 @@ INFINITY_THRIFT_PORT=23817
 INFINITY_HTTP_PORT=23820
 INFINITY_PSQL_PORT=5432
 
+# The hostname where the OceanBase service is exposed
+OCEANBASE_HOST=oceanbase
+# The port used to expose the OceanBase service
+OCEANBASE_PORT=2881
+# The username for OceanBase
+OCEANBASE_USER=root@ragflow
+# The password for OceanBase
+OCEANBASE_PASSWORD=infini_rag_flow
+# The doc database of the OceanBase service to use
+OCEANBASE_DOC_DBNAME=ragflow_doc
+
+# OceanBase container configuration
+OB_CLUSTER_NAME=${OB_CLUSTER_NAME:-ragflow}
+OB_TENANT_NAME=${OB_TENANT_NAME:-ragflow}
+OB_SYS_PASSWORD=${OCEANBASE_PASSWORD:-infini_rag_flow}
+OB_TENANT_PASSWORD=${OCEANBASE_PASSWORD:-infini_rag_flow}
+OB_MEMORY_LIMIT=${OB_MEMORY_LIMIT:-10G}
+OB_SYSTEM_MEMORY=${OB_SYSTEM_MEMORY:-2G}
+OB_DATAFILE_SIZE=${OB_DATAFILE_SIZE:-20G}
+OB_LOG_DISK_SIZE=${OB_LOG_DISK_SIZE:-20G}
+
 # The password for MySQL.
 MYSQL_PASSWORD=infini_rag_flow
 # The hostname where the MySQL service is exposed

docker/README.md

@@ -138,6 +138,15 @@ The [.env](./.env) file contains important environment variables for Docker.
   - `password`: The password for MinIO.
   - `host`: The MinIO serving IP *and* port inside the Docker container. Defaults to `minio:9000`.
 
+- `oceanbase`
+  - `scheme`: The connection scheme. Set to `mysql` to use mysql config, or other values to use config below.
+  - `config`:
+    - `db_name`: The OceanBase database name.
+    - `user`: The username for OceanBase.
+    - `password`: The password for OceanBase.
+    - `host`: The hostname of the OceanBase service.
+    - `port`: The port of OceanBase.
+
 - `oss`
   - `access_key`: The access key ID used to authenticate requests to the OSS service.
   - `secret_key`: The secret access key used to authenticate requests to the OSS service.

docker/docker-compose-base.yml

@@ -96,6 +96,31 @@ services:
       retries: 120
     restart: on-failure
 
+  oceanbase:
+    profiles:
+      - oceanbase
+    image: oceanbase/oceanbase-ce:4.4.1.0-100000032025101610
+    volumes:
+      - ./oceanbase/data:/root/ob
+      - ./oceanbase/conf:/root/.obd/cluster
+      - ./oceanbase/init.d:/root/boot/init.d
+    ports:
+      - ${OCEANBASE_PORT:-2881}:2881
+    env_file: .env
+    environment:
+      - MODE=normal
+      - OB_SERVER_IP=127.0.0.1
+    mem_limit: ${MEM_LIMIT}
+    healthcheck:
+      test: [ 'CMD-SHELL', 'obclient -h127.0.0.1 -P2881 -uroot@${OB_TENANT_NAME:-ragflow} -p${OB_TENANT_PASSWORD:-infini_rag_flow} -e "CREATE DATABASE IF NOT EXISTS ${OCEANBASE_DOC_DBNAME:-ragflow_doc};"' ]
+      interval: 10s
+      retries: 30
+      start_period: 30s
+      timeout: 10s
+    networks:
+      - ragflow
+    restart: on-failure
+
   sandbox-executor-manager:
     profiles:
       - sandbox
@@ -256,6 +281,8 @@ volumes:
     driver: local
   infinity_data:
     driver: local
+  ob_data:
+    driver: local
   mysql_data:
     driver: local
   minio_data:

docker/oceanbase/init.d/vec_memory.sql

@@ -0,0 +1 @@
+ALTER SYSTEM SET ob_vector_memory_limit_percentage = 30;

docker/service_conf.yaml.template

@@ -28,6 +28,14 @@ os:
 infinity:
   uri: '${INFINITY_HOST:-infinity}:23817'
   db_name: 'default_db'
+oceanbase:
+  scheme: 'oceanbase' # set 'mysql' to create connection using mysql config
+  config:
+    db_name: '${OCEANBASE_DOC_DBNAME:-test}'
+    user: '${OCEANBASE_USER:-root@ragflow}'
+    password: '${OCEANBASE_PASSWORD:-infini_rag_flow}'
+    host: '${OCEANBASE_HOST:-oceanbase}'
+    port: ${OCEANBASE_PORT:-2881}
 redis:
   db: 1
   password: '${REDIS_PASSWORD:-infini_rag_flow}'

pyproject.toml

@@ -149,6 +149,7 @@ dependencies = [
     "captcha>=0.7.1",
     "pip>=25.2",
     "pypandoc>=1.16",
+    "pyobvector==0.2.18",
 ]
 
 [dependency-groups]

rag/nlp/query.py

@@ -83,6 +83,7 @@ class FulltextQueryer:
         return txt
 
     def question(self, txt, tbl="qa", min_match: float = 0.6):
+        original_query = txt
         txt = FulltextQueryer.add_space_between_eng_zh(txt)
         txt = re.sub(
             r"[ :|\r\n\t,，。？?/`!！&^%%()\[\]{}<>]+",
@@ -127,7 +128,7 @@ class FulltextQueryer:
                 q.append(txt)
             query = " ".join(q)
             return MatchTextExpr(
-                self.query_fields, query, 100
+                self.query_fields, query, 100, {"original_query": original_query}
             ), keywords
 
         def need_fine_grained_tokenize(tk):
@@ -212,7 +213,7 @@ class FulltextQueryer:
             if not query:
                 query = otxt
             return MatchTextExpr(
-                self.query_fields, query, 100, {"minimum_should_match": min_match}
+                self.query_fields, query, 100, {"minimum_should_match": min_match, "original_query": original_query}
             ), keywords
         return None, keywords
 
@@ -259,6 +260,7 @@ class FulltextQueryer:
             content_tks = [c.strip() for c in content_tks.strip() if c.strip()]
         tks_w = self.tw.weights(content_tks, preprocess=False)
 
+        origin_keywords = keywords.copy()
         keywords = [f'"{k.strip()}"' for k in keywords]
         for tk, w in sorted(tks_w, key=lambda x: x[1] * -1)[:keywords_topn]:
             tk_syns = self.syn.lookup(tk)
@@ -274,4 +276,4 @@ class FulltextQueryer:
                 keywords.append(f"{tk}^{w}")
 
         return MatchTextExpr(self.query_fields, " ".join(keywords), 100,
-                             {"minimum_should_match": min(3, len(keywords) // 10)})
+                             {"minimum_should_match": min(3, len(keywords) / 10), "original_query": " ".join(origin_keywords)})

uv.lock

@@ -108,6 +108,18 @@ wheels = [
     { url = "https://mirrors.aliyun.com/pypi/packages/f3/ba/df6e8e1045aebc4778d19b8a3a9bc1808adb1619ba94ca354d9ba17d86c3/aiolimiter-1.2.1-py3-none-any.whl", hash = "sha256:d3f249e9059a20badcb56b61601a83556133655c11d1eb3dd3e04ff069e5f3c7" },
 ]
 
+[[package]]
+name = "aiomysql"
+version = "0.3.2"
+source = { registry = "https://pypi.tuna.tsinghua.edu.cn/simple" }
+dependencies = [
+    { name = "pymysql" },
+]
+sdist = { url = "https://pypi.tuna.tsinghua.edu.cn/packages/29/e0/302aeffe8d90853556f47f3106b89c16cc2ec2a4d269bdfd82e3f4ae12cc/aiomysql-0.3.2.tar.gz", hash = "sha256:72d15ef5cfc34c03468eb41e1b90adb9fd9347b0b589114bd23ead569a02ac1a", size = 108311, upload-time = "2025-10-22T00:15:21.278Z" }
+wheels = [
+    { url = "https://pypi.tuna.tsinghua.edu.cn/packages/4c/af/aae0153c3e28712adaf462328f6c7a3c196a1c1c27b491de4377dd3e6b52/aiomysql-0.3.2-py3-none-any.whl", hash = "sha256:c82c5ba04137d7afd5c693a258bea8ead2aad77101668044143a991e04632eb2", size = 71834, upload-time = "2025-10-22T00:15:15.905Z" },
+]
+
 [[package]]
 name = "aiosignal"
 version = "1.4.0"
@@ -4884,6 +4896,23 @@ wheels = [
     { url = "https://mirrors.aliyun.com/pypi/packages/d2/53/d23a97e0a2c690d40b165d1062e2c4ccc796be458a1ce59f6ba030434663/pynndescent-0.5.13-py3-none-any.whl", hash = "sha256:69aabb8f394bc631b6ac475a1c7f3994c54adf3f51cd63b2730fefba5771b949" },
 ]
 
+[[package]]
+name = "pyobvector"
+version = "0.2.18"
+source = { registry = "https://pypi.tuna.tsinghua.edu.cn/simple" }
+dependencies = [
+    { name = "aiomysql" },
+    { name = "numpy" },
+    { name = "pydantic" },
+    { name = "pymysql" },
+    { name = "sqlalchemy" },
+    { name = "sqlglot" },
+]
+sdist = { url = "https://pypi.tuna.tsinghua.edu.cn/packages/82/33/adf722744a88eb75b4422129cbc4fe9b05738064ee79762348e285d93520/pyobvector-0.2.18.tar.gz", hash = "sha256:58ca2765ab99de188e99c815aab914ab9efd003cfa1ce9c5f2e41d0e2b4878be", size = 43035, upload-time = "2025-11-05T06:18:36.747Z" }
+wheels = [
+    { url = "https://pypi.tuna.tsinghua.edu.cn/packages/5c/1f/73fa42b215722ec36172ac155626db5d2b95ea9f884cf9fb0624492e303b/pyobvector-0.2.18-py3-none-any.whl", hash = "sha256:93e34b7796e4cbc6ad139118d655eb127d1e7a0f5df76df66e25520533a15488", size = 58129, upload-time = "2025-11-05T06:18:35.326Z" },
+]
+
 [[package]]
 name = "pyodbc"
 version = "5.2.0"
@@ -5375,6 +5404,7 @@ dependencies = [
     { name = "pycryptodomex" },
     { name = "pyicu" },
     { name = "pymysql" },
+    { name = "pyobvector" },
     { name = "pyodbc" },
     { name = "pypandoc" },
     { name = "pypdf" },
@@ -5534,6 +5564,7 @@ requires-dist = [
     { name = "pycryptodomex", specifier = "==3.20.0" },
     { name = "pyicu", specifier = ">=2.15.3,<3.0.0" },
     { name = "pymysql", specifier = ">=1.1.1,<2.0.0" },
+    { name = "pyobvector", specifier = "==0.2.18" },
     { name = "pyodbc", specifier = ">=5.2.0,<6.0.0" },
     { name = "pypandoc", specifier = ">=1.16" },
     { name = "pypdf", specifier = "==6.0.0" },
@@ -6430,6 +6461,43 @@ wheels = [
     { url = "https://mirrors.aliyun.com/pypi/packages/52/a7/d2782e4e3f77c8450f727ba74a8f12756d5ba823d81b941f1b04da9d033a/sphinxcontrib_serializinghtml-2.0.0-py3-none-any.whl", hash = "sha256:6e2cb0eef194e10c27ec0023bfeb25badbbb5868244cf5bc5bdc04e4464bf331" },
 ]
 
+[[package]]
+name = "sqlalchemy"
+version = "2.0.44"
+source = { registry = "https://pypi.tuna.tsinghua.edu.cn/simple" }
+dependencies = [
+    { name = "greenlet", marker = "platform_machine == 'AMD64' or platform_machine == 'WIN32' or platform_machine == 'aarch64' or platform_machine == 'amd64' or platform_machine == 'ppc64le' or platform_machine == 'win32' or platform_machine == 'x86_64'" },
+    { name = "typing-extensions" },
+]
+sdist = { url = "https://pypi.tuna.tsinghua.edu.cn/packages/f0/f2/840d7b9496825333f532d2e3976b8eadbf52034178aac53630d09fe6e1ef/sqlalchemy-2.0.44.tar.gz", hash = "sha256:0ae7454e1ab1d780aee69fd2aae7d6b8670a581d8847f2d1e0f7ddfbf47e5a22", size = 9819830, upload-time = "2025-10-10T14:39:12.935Z" }
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