Feat: add splitter (#10161)

### What problem does this PR solve?


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

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: Lynn <lynn_inf@hotmail.com>
Co-authored-by: chanx <1243304602@qq.com>
Co-authored-by: balibabu <cike8899@users.noreply.github.com>
Co-authored-by: 纷繁下的无奈 <zhileihuang@126.com>
Co-authored-by: huangzl <huangzl@shinemo.com>
Co-authored-by: writinwaters <93570324+writinwaters@users.noreply.github.com>
Co-authored-by: Wilmer <33392318@qq.com>
Co-authored-by: Adrian Weidig <adrianweidig@gmx.net>
Co-authored-by: Zhichang Yu <yuzhichang@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Yongteng Lei <yongtengrey@outlook.com>
Co-authored-by: Liu An <asiro@qq.com>
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Co-authored-by: BadwomanCraZY <511528396@qq.com>
Co-authored-by: cucusenok <31804608+cucusenok@users.noreply.github.com>
Co-authored-by: Russell Valentine <russ@coldstonelabs.org>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Billy Bao <newyorkupperbay@gmail.com>
Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
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Co-authored-by: TensorNull <tensor.null@gmail.com>

api/apps/HEALTHCHECK_TESTING.md

@@ -0,0 +1,105 @@
+# 健康检查与 Kubernetes 探针简明说明
+
+本文件说明：什么是 K8s 探针、如何用 `/v1/system/healthz` 做健康检查，以及下文用例中的关键词含义。
+
+## 什么是 K8s 探针（Probe）
+- 探针是 K8s 用来“探测”容器是否健康/可对外服务的机制。
+- 常见三类：
+  - livenessProbe：活性探针。失败时 K8s 会重启容器，用于“应用卡死/失去连接时自愈”。
+  - readinessProbe：就绪探针。失败时 Endpoint 不会被加入 Service 负载均衡，用于“应用尚未准备好时不接流量”。
+  - startupProbe：启动探针。给慢启动应用更长的初始化窗口，期间不执行 liveness/readiness。
+- 这些探针通常通过 HTTP GET 访问一个公开且轻量的健康端点（无需鉴权），以 HTTP 状态码判定结果：200=通过；5xx/超时=失败。
+
+## 本项目健康端点
+- 已实现：`GET /v1/system/healthz`（无需认证）。
+- 语义：
+  - 200：关键依赖正常。
+  - 500：任一关键依赖异常（当前判定为 DB 或 Chat）。
+  - 响应体：JSON，最小字段 `status, db, chat`；并包含 `redis, doc_engine, storage` 等可观测项。失败项会在 `_meta` 中包含 `error/elapsed`。
+- 示例（DB 故障）：
+```json
+{"status":"nok","chat":"ok","db":"nok"}
+```
+
+## 用例背景（Problem/use case）
+- 现状：Ragflow 跑在 K8s，数据库是 AWS RDS Postgres，凭证由 Secret Manager 管理并每 7 天轮换。轮换后应用连接失效，需要手动重启 Pod 才能重新建立连接。
+- 目标：通过 K8s 探针自动化检测并重启异常 Pod，减少人工操作。
+- 需求：一个“无需鉴权”的公共健康端点，能在依赖异常时返回非 200（如 500）且提供 JSON 详情。
+- 现已满足：`/v1/system/healthz` 正是为此设计。
+
+## 关键术语解释（对应你提供的描述）
+- Ragflow instance：部署在 K8s 的 Ragflow 服务。
+- AWS RDS Postgres：托管的 PostgreSQL 数据库实例。
+- Secret Manager rotation：Secrets 定期轮换（每 7 天），会导致旧连接失效。
+- Probes（K8s 探针）：liveness/readiness，用于自动重启或摘除不健康实例。
+- Public endpoint without API key：无需 Authorization 的 HTTP 路由，便于探针直接访问。
+- Dependencies statuses：依赖健康状态（db、chat、redis、doc_engine、storage 等）。
+- HTTP 500 with JSON：当依赖异常时返回 500，并附带 JSON 说明哪个子系统失败。
+
+## 快速测试
+- 正常：
+```bash
+curl -i http://<host>/v1/system/healthz
+```
+- 制造 DB 故障（docker-compose 示例）：
+```bash
+docker compose stop db && curl -i http://<host>/v1/system/healthz
+```
+（预期 500，JSON 中 `db:"nok"`）
+
+## 更完整的测试清单
+### 1) 仅查看 HTTP 状态码
+```bash
+curl -s -o /dev/null -w "%{http_code}\n" http://<host>/v1/system/healthz
+```
+期望：`200` 或 `500`。
+
+### 2) Windows PowerShell
+```powershell
+# 状态码
+(Invoke-WebRequest -Uri "http://<host>/v1/system/healthz" -Method GET -TimeoutSec 3 -ErrorAction SilentlyContinue).StatusCode
+# 完整响应
+Invoke-RestMethod -Uri "http://<host>/v1/system/healthz" -Method GET
+```
+
+### 3) 通过 kubectl 端口转发本地测试
+```bash
+# 前端/网关暴露端口不同环境自行调整
+kubectl port-forward deploy/<your-deploy> 8080:80 -n <ns>
+curl -i http://127.0.0.1:8080/v1/system/healthz
+```
+
+### 4) 制造常见失败场景
+- DB 失败（推荐）：
+```bash
+docker compose stop db
+curl -i http://<host>/v1/system/healthz   # 预期 500
+```
+- Chat 失败（可选）：将 `CHAT_CFG` 的 `factory`/`base_url` 设为无效并重启后端，再请求应为 500，且 `chat:"nok"`。
+- Redis/存储/文档引擎：停用对应服务后再次请求，可在 JSON 中看到相应字段为 `"nok"`（不影响 200/500 判定）。
+
+### 5) 浏览器验证
+- 直接打开 `http://<host>/v1/system/healthz`，在 DevTools Network 查看 200/500；页面正文就是 JSON。
+- 反向代理注意：若有自定义 500 错页，需对 `/healthz` 关闭错误页拦截（如 `proxy_intercept_errors off;`）。
+
+## K8s 探针示例
+```yaml
+readinessProbe:
+  httpGet:
+    path: /v1/system/healthz
+    port: 80
+  initialDelaySeconds: 5
+  periodSeconds: 10
+  timeoutSeconds: 2
+  failureThreshold: 1
+livenessProbe:
+  httpGet:
+    path: /v1/system/healthz
+    port: 80
+  initialDelaySeconds: 10
+  periodSeconds: 10
+  timeoutSeconds: 2
+  failureThreshold: 3
+```
+
+提示：如有反向代理（Nginx）自定义 500 错页，需对 `/healthz` 关闭错误页拦截，以便保留 JSON。

api/apps/canvas_app.py

@@ -28,6 +28,7 @@ from api.db import CanvasCategory, FileType
 from api.db.services.canvas_service import CanvasTemplateService, UserCanvasService, API4ConversationService
 from api.db.services.document_service import DocumentService
 from api.db.services.file_service import FileService
+from api.db.services.task_service import queue_dataflow
 from api.db.services.user_service import TenantService
 from api.db.services.user_canvas_version import UserCanvasVersionService
 from api.settings import RetCode
@@ -48,14 +49,6 @@ def templates():
     return get_json_result(data=[c.to_dict() for c in CanvasTemplateService.query(canvas_category=CanvasCategory.Agent)])
 
 
-@manager.route('/list', methods=['GET'])  # noqa: F821
-@login_required
-def canvas_list():
-    return get_json_result(data=sorted([c.to_dict() for c in \
-                                 UserCanvasService.query(user_id=current_user.id, canvas_category=CanvasCategory.Agent)], key=lambda x: x["update_time"]*-1)
-                           )
-
-
 @manager.route('/rm', methods=['POST'])  # noqa: F821
 @validate_request("canvas_ids")
 @login_required
@@ -77,9 +70,10 @@ def save():
     if not isinstance(req["dsl"], str):
         req["dsl"] = json.dumps(req["dsl"], ensure_ascii=False)
     req["dsl"] = json.loads(req["dsl"])
+    cate = req.get("canvas_category", CanvasCategory.Agent)
     if "id" not in req:
         req["user_id"] = current_user.id
-        if UserCanvasService.query(user_id=current_user.id, title=req["title"].strip(), canvas_category=CanvasCategory.Agent):
+        if UserCanvasService.query(user_id=current_user.id, title=req["title"].strip(), canvas_category=cate):
             return get_data_error_result(message=f"{req['title'].strip()} already exists.")
         req["id"] = get_uuid()
         if not UserCanvasService.save(**req):
@@ -148,6 +142,14 @@ def run():
     if not isinstance(cvs.dsl, str):
         cvs.dsl = json.dumps(cvs.dsl, ensure_ascii=False)
 
+    if cvs.canvas_category == CanvasCategory.DataFlow:
+        task_id = get_uuid()
+        flow_id = get_uuid()
+        ok, error_message = queue_dataflow(dsl=cvs.dsl, tenant_id=user_id, file=files[0], task_id=task_id, flow_id=flow_id, priority=0)
+        if not ok:
+            return server_error_response(error_message)
+        return get_json_result(data={"task_id": task_id, "message_id": flow_id})
+
     try:
         canvas = Canvas(cvs.dsl, current_user.id, req["id"])
     except Exception as e:
@@ -332,7 +334,7 @@ def test_db_connect():
         if req["db_type"] in ["mysql", "mariadb"]:
             db = MySQLDatabase(req["database"], user=req["username"], host=req["host"], port=req["port"],
                                password=req["password"])
-        elif req["db_type"] == 'postgresql':
+        elif req["db_type"] == 'postgres':
             db = PostgresqlDatabase(req["database"], user=req["username"], host=req["host"], port=req["port"],
                                     password=req["password"])
         elif req["db_type"] == 'mssql':
@@ -383,22 +385,31 @@ def getversion( version_id):
         return get_json_result(data=f"Error getting history file: {e}")
 
 
-@manager.route('/listteam', methods=['GET'])  # noqa: F821
+@manager.route('/list', methods=['GET'])  # noqa: F821
 @login_required
 def list_canvas():
     keywords = request.args.get("keywords", "")
     page_number = int(request.args.get("page", 1))
     items_per_page = int(request.args.get("page_size", 150))
     orderby = request.args.get("orderby", "create_time")
-    desc = request.args.get("desc", True)
-    try:
+    canvas_category = request.args.get("canvas_category")
+    if request.args.get("desc", "true").lower() == "false":
+        desc = False
+    else:
+        desc = True
+    owner_ids = request.args.get("owner_ids", [])
+    if not owner_ids:
         tenants = TenantService.get_joined_tenants_by_user_id(current_user.id)
+        tenants = [m["tenant_id"] for m in tenants]
         canvas, total = UserCanvasService.get_by_tenant_ids(
-            [m["tenant_id"] for m in tenants], current_user.id, page_number,
-            items_per_page, orderby, desc, keywords, canvas_category=CanvasCategory.Agent)
-        return get_json_result(data={"canvas": canvas, "total": total})
-    except Exception as e:
-        return server_error_response(e)
+            tenants, current_user.id, page_number,
+            items_per_page, orderby, desc, keywords, canvas_category)
+    else:
+        tenants = owner_ids
+        canvas, total = UserCanvasService.get_by_tenant_ids(
+            tenants, current_user.id, 0,
+            0, orderby, desc, keywords, canvas_category)
+    return get_json_result(data={"canvas": canvas, "total": total})
 
 
 @manager.route('/setting', methods=['POST'])  # noqa: F821

api/apps/document_app.py

@@ -182,6 +182,7 @@ def create():
                 "id": get_uuid(),
                 "kb_id": kb.id,
                 "parser_id": kb.parser_id,
+                "pipeline_id": kb.pipeline_id,
                 "parser_config": kb.parser_config,
                 "created_by": current_user.id,
                 "type": FileType.VIRTUAL,
@@ -546,31 +547,22 @@ def get(doc_id):
 
 @manager.route("/change_parser", methods=["POST"])  # noqa: F821
 @login_required
-@validate_request("doc_id", "parser_id")
+@validate_request("doc_id")
 def change_parser():
     req = request.json
 
     if not DocumentService.accessible(req["doc_id"], current_user.id):
         return get_json_result(data=False, message="No authorization.", code=settings.RetCode.AUTHENTICATION_ERROR)
-    try:
-        e, doc = DocumentService.get_by_id(req["doc_id"])
-        if not e:
-            return get_data_error_result(message="Document not found!")
-        if doc.parser_id.lower() == req["parser_id"].lower():
-            if "parser_config" in req:
-                if req["parser_config"] == doc.parser_config:
-                    return get_json_result(data=True)
-            else:
-                return get_json_result(data=True)
 
-        if (doc.type == FileType.VISUAL and req["parser_id"] != "picture") or (re.search(r"\.(ppt|pptx|pages)$", doc.name) and req["parser_id"] != "presentation"):
-            return get_data_error_result(message="Not supported yet!")
+    e, doc = DocumentService.get_by_id(req["doc_id"])
+    if not e:
+        return get_data_error_result(message="Document not found!")
 
+    def reset_doc():
+        nonlocal doc
         e = DocumentService.update_by_id(doc.id, {"parser_id": req["parser_id"], "progress": 0, "progress_msg": "", "run": TaskStatus.UNSTART.value})
         if not e:
             return get_data_error_result(message="Document not found!")
-        if "parser_config" in req:
-            DocumentService.update_parser_config(doc.id, req["parser_config"])
         if doc.token_num > 0:
             e = DocumentService.increment_chunk_num(doc.id, doc.kb_id, doc.token_num * -1, doc.chunk_num * -1, doc.process_duration * -1)
             if not e:
@@ -581,6 +573,26 @@ def change_parser():
             if settings.docStoreConn.indexExist(search.index_name(tenant_id), doc.kb_id):
                 settings.docStoreConn.delete({"doc_id": doc.id}, search.index_name(tenant_id), doc.kb_id)
 
+    try:
+        if req.get("pipeline_id"):
+            if doc.pipeline_id == req["pipeline_id"]:
+                return get_json_result(data=True)
+            DocumentService.update_by_id(doc.id, {"pipeline_id": req["pipeline_id"]})
+            reset_doc()
+            return get_json_result(data=True)
+
+        if doc.parser_id.lower() == req["parser_id"].lower():
+            if "parser_config" in req:
+                if req["parser_config"] == doc.parser_config:
+                    return get_json_result(data=True)
+            else:
+                return get_json_result(data=True)
+
+        if (doc.type == FileType.VISUAL and req["parser_id"] != "picture") or (re.search(r"\.(ppt|pptx|pages)$", doc.name) and req["parser_id"] != "presentation"):
+            return get_data_error_result(message="Not supported yet!")
+        if "parser_config" in req:
+            DocumentService.update_parser_config(doc.id, req["parser_config"])
+        reset_doc()
         return get_json_result(data=True)
     except Exception as e:
         return server_error_response(e)

api/apps/kb_app.py

@@ -64,7 +64,7 @@ def create():
         e, t = TenantService.get_by_id(current_user.id)
         if not e:
             return get_data_error_result(message="Tenant not found.")
-        req["embd_id"] = t.embd_id
+        #req["embd_id"] = t.embd_id
         if not KnowledgebaseService.save(**req):
             return get_data_error_result()
         return get_json_result(data={"kb_id": req["id"]})
@@ -379,3 +379,19 @@ def get_meta():
                 code=settings.RetCode.AUTHENTICATION_ERROR
             )
     return get_json_result(data=DocumentService.get_meta_by_kbs(kb_ids))
+
+
+@manager.route("/basic_info", methods=["GET"])  # noqa: F821
+@login_required
+def get_basic_info():
+    kb_id = request.args.get("kb_id", "")
+    if not KnowledgebaseService.accessible(kb_id, current_user.id):
+        return get_json_result(
+            data=False,
+            message='No authorization.',
+            code=settings.RetCode.AUTHENTICATION_ERROR
+        )
+
+    basic_info = DocumentService.knowledgebase_basic_info(kb_id)
+
+    return get_json_result(data=basic_info)

api/apps/sdk/session.py

@@ -414,7 +414,7 @@ def agents_completion_openai_compatibility(tenant_id, agent_id):
                 tenant_id,
                 agent_id,
                 question,
-                session_id=req.get("session_id", req.get("id", "") or req.get("metadata", {}).get("id", "")),
+                session_id=req.pop("session_id", req.get("id", "")) or req.get("metadata", {}).get("id", ""),
                 stream=True,
                 **req,
             ),
@@ -432,7 +432,7 @@ def agents_completion_openai_compatibility(tenant_id, agent_id):
                 tenant_id,
                 agent_id,
                 question,
-                session_id=req.get("session_id", req.get("id", "") or req.get("metadata", {}).get("id", "")),
+                session_id=req.pop("session_id", req.get("id", "")) or req.get("metadata", {}).get("id", ""),
                 stream=False,
                 **req,
             )

api/apps/system_app.py

@@ -36,6 +36,8 @@ from rag.utils.storage_factory import STORAGE_IMPL, STORAGE_IMPL_TYPE
 from timeit import default_timer as timer
 
 from rag.utils.redis_conn import REDIS_CONN
+from flask import jsonify
+from api.utils.health import run_health_checks
 
 @manager.route("/version", methods=["GET"])  # noqa: F821
 @login_required
@@ -169,6 +171,12 @@ def status():
     return get_json_result(data=res)
 
 
+@manager.route("/healthz", methods=["GET"])  # noqa: F821
+def healthz():
+    result, all_ok = run_health_checks()
+    return jsonify(result), (200 if all_ok else 500)
+
+
 @manager.route("/new_token", methods=["POST"])  # noqa: F821
 @login_required
 def new_token():