FEAT: NEW WORKFLOW ENGINE (#3160)

Co-authored-by: Joel <iamjoel007@gmail.com>
Co-authored-by: Yeuoly <admin@srmxy.cn>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>
Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: nite-knite <nkCoding@gmail.com>
Co-authored-by: jyong <718720800@qq.com>

api/services/workflow_app_service.py

@@ -0,0 +1,62 @@
+from flask_sqlalchemy.pagination import Pagination
+from sqlalchemy import and_, or_
+
+from extensions.ext_database import db
+from models import CreatedByRole
+from models.model import App, EndUser
+from models.workflow import WorkflowAppLog, WorkflowRun, WorkflowRunStatus
+
+
+class WorkflowAppService:
+
+    def get_paginate_workflow_app_logs(self, app_model: App, args: dict) -> Pagination:
+        """
+        Get paginate workflow app logs
+        :param app: app model
+        :param args: request args
+        :return:
+        """
+        query = (
+            db.select(WorkflowAppLog)
+            .where(
+                WorkflowAppLog.tenant_id == app_model.tenant_id,
+                WorkflowAppLog.app_id == app_model.id
+            )
+        )
+
+        status = WorkflowRunStatus.value_of(args.get('status')) if args.get('status') else None
+        if args['keyword'] or status:
+            query = query.join(
+                WorkflowRun, WorkflowRun.id == WorkflowAppLog.workflow_run_id
+            )
+
+        if args['keyword']:
+            keyword_val = f"%{args['keyword'][:30]}%"
+            keyword_conditions = [
+                WorkflowRun.inputs.ilike(keyword_val),
+                WorkflowRun.outputs.ilike(keyword_val),
+                # filter keyword by end user session id if created by end user role
+                and_(WorkflowRun.created_by_role == 'end_user', EndUser.session_id.ilike(keyword_val))
+            ]
+
+            query = query.outerjoin(
+                EndUser,
+                and_(WorkflowRun.created_by == EndUser.id, WorkflowRun.created_by_role == CreatedByRole.END_USER.value)
+            ).filter(or_(*keyword_conditions))
+
+        if status:
+            # join with workflow_run and filter by status
+            query = query.filter(
+                WorkflowRun.status == status.value
+            )
+
+        query = query.order_by(WorkflowAppLog.created_at.desc())
+
+        pagination = db.paginate(
+            query,
+            page=args['page'],
+            per_page=args['limit'],
+            error_out=False
+        )
+
+        return pagination