tumbleweed workflow engine
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Introduction
Workflow engine based on bpmn 2.0, split users, forms, etc., and focus on the flow of the process itself
Use with workflow designer
Project positioning
Tumbleweed is a workflow independent microservice to provide RESTful services (subsequent to consider changing to grpc-gateway form). Separate dependencies such as [user/role] and [form] to support multi-tenancy
Processing for [user/role]
- Designate a tenant for the system connected to the workflow engine
- Then synchronize the id and name of the user/role that needs to use the workflow in the system to the database of the workflow engine
- The workflow engine itself only cares about the unique identification of the user/role for approval, etc.
Processing for [Form]
- The workflow engine itself does not save any form structure and data
- If there are some gateway conditions in the circulation that need to use form data, assign the judgment field in the form to variable, and then use the variable in the condition expression to judge
Supported bpmn elements
- Event
- StartEvent
- EndEvent
- Activity
- UserTask
- ScriptTask
- Gateway
- ExclusiveGateway
- ParallelGateway
- InclusiveGateway
- SequenceFlow
Technology Architecture
golang + echo + gorm + postgres
External component dependencies
No other dependencies except the database (postgres) -mysql needs to replace the driver of gorm and make a small modification to some sql
data access
gorm + postgres
Use the wf schema of the specified database. A database can be used alone or integrated into an existing business database
Support automatic migration (configurable on or off)
Supported features
- All the basic functions that the above bpmn element should support
- Countersign
- Referral for approval
- Approval time limit Natural day/working day
- Timeout consequences (automatically pass/reject or no action)
- WebHook
- Multi-tenancy
- Process link for display
Quality assurance
- Integration Testing
Project supported by JetBrains
Many thanks to Jetbrains for kindly providing a license for me to work on this and other open-source projects.
