CloudFlow:Create time-based schedules for a flow

Execution process

The process of a specified schedule for a flow consists of the following steps:

1. In Serverless Workflow, define a task step that calls a function in Function Compute.
2. In Serverless Workflow, create a time-based schedule. Both the flow and the function in the flow are executed on the schedule.

Procedure

1. Log on to the Serverless Workflow console.
2. In the top navigation bar, select a region.
3. In the left-side navigation pane, click Application Center.
4. On the Application Center page, click Create Application.
5. On the Select Template step of the Create Application page, select the Timer template and click Configure and Deploy.
   
6. On the Configure and Deploy step, configure the parameters, and then click Deploy.
   

   The following table describes the parameters.

   Parameter	Description
   Application Name	The name of the application, which must be unique in an account. Note Your application is a custom Resource Orchestration Service (ROS) resource. You can log on to the ROS console to view the application.
   Cron	The Cron expressions to execute the flow on a specified schedule. For more information, see Parameters for time-based schedules.
   Input	The input of the flow that is executed on a specified schedule. The input must be in the JSON format. This parameter is left empty by default. For more information, see Input format.

   After the application is deployed, all the resources created by this application are displayed.

   • Role of the RAM user: AliyunFCInvocationAccessflowRole with the function call permission and flowRole with the flow permission.
   • Function Compute resources: service and the servicehello function.
   • Serverless Workflow resources: flow and time-based schedule (ALIYUN::FNF::Schedule).
7. Log on to the Serverless Workflow console and check whether the flow you created is executed on the specified schedule.
   

   The following code shows the definition of a flow that calls the hello function of Function Compute in the task step.

   version: v1
   type: flow
   steps:
     # task step to invoke FC function hello
     - type: task
       name: hello
       resourceArn: acs:fc:::services/service-CD946B9A9F36/functions/hello                   

   You can modify the definition of this flow to implement your business logic. For more information, see Modify a flow.