PowerJob workflow

What is workflow ?

Workflow describes Dependencies between tasks , For example, I have A、B、C、D Four tasks , I hope A Start running after the task is finished B、C Mission , Last run D Mission . This forms a dependency relationship , You can use directed acyclic graph （DAG） To describe the relationship , As shown in the figure below .

main interface

Intuitively display all workflow information managed by the current system , And provide corresponding operation and maintenance methods .

New workflow [ Detailed video tutorial ]

Click on the top right button New workflow , You can enter a new workflow , The specific interface and description are as follows .

• Workflow name ： name , No actual business use , Please try to simplify the fields

• Workflow description ： describe , No actual business use , Please try to simplify the fields

• Timing information ： Trigger method of the workflow , Including time expression type selection box and time expression input box

• • CRON -> Fill in CRON expression （ Generate websites online ）
  • API -> There is no need to fill in any parameters , Indicates that the task is performed by OpenAPI Trigger

• Maximum instance ： The number of simultaneous executions of this workflow

• ** Task dependencies ：** Provide editing interface and visual operation , draw DAG（ Directed acyclic graph ）, Configure the dependencies of various tasks in the workflow

DAG Operation guide

Edit dependencies

v4.0.0 Free dragging of nodes is supported in the future , No more points , Ha ha ha ~

• Add a node ： Click on DAG At the top left of the edit box “ Import task ”, Import the currently existing tasks （ Need to be ahead of time Task management interface Enter the task ）, Generate DAG The node of
• Connecting nodes ： Click any anchor point of the starting node and hold it , Drag the mouse to connect to any anchor point of another node
• Delete node ： Select the node to delete , Press backspace （ Be careful ：windows Next, use the backspace key [Backspace],macOS Use the delete key [delete] ）
• Delete edge ： Select the edge to be deleted , Press backspace （ Be careful ：windows Next, use the backspace key [Backspace],macOS Use the delete key [delete] ）

Edit node information

Click the node to edit , An edit box will pop up on the right , As shown in the figure below \

• The name of the task ： Current node quote Task name of , Click to edit （ Support fuzzy search by entering the name ）
• The name of the node ： Name of node , No actual business use , If you can clearly express the business logic behind the node, please try to simplify the fields
• Node parameters ： Parameter configuration of node , Use this parameter when the information is not empty Cover The parameter information configured by the task referenced by the current node
• Is it enabled? ： Nodes that are not enabled will skip directly
• ** Failed to skip ：** When this node fails to execute, it will not interrupt the execution of the whole workflow

Copy workflow

If you need to configure an existing workflow High similarity The workflow of the , It is recommended to use the copy function of workflow for wall crack , Save time and worry ~

Click the copy button ~

Workflow instance

v4.0.0 The version greatly improves the operation and maintenance capability of workflow ！

main interface

Workflow instance details

The upper part is the basic information of the workflow instance , The following is an example of DAG Information , Click the node to view the details of the corresponding task instance .

There are three function buttons on the upper right for workflow operation and maintenance

** Refresh ：** Retrieve the information of the current workflow instance

retry ： Failed to from current workflow instance （ Nodes that fail to skip will be ignored ） The node of continues to execute later

stop it ： Try Stop all ongoing tasks in the current workflow instance , And terminate the entire workflow

DAG There is also a relatively hidden function button at the top of the left side of the interface Mark successful , As shown in the figure below

Select the node that failed to execute , After clicking the mark successfully, it will be DAG Set the node status in to success （ The status of the corresponding task instance will not be changed , Therefore, click the node to see the details of the task instance still failed ）

Set the node status of to success （ The status of the corresponding task instance will not be changed , Therefore, click the node to see the details of the task instance still failed ）

This function is mainly used with the retry function of workflow instances to realize flexible operation and maintenance （ Want to skip a failed node and try again ）.