Task orchestration - Function Compute - Alibaba Cloud Documentation Center

Combined with Serverless workflow, asynchronous function invocations can be applied to the task flows in complex scenarios that involve large amounts of data. You can orchestrate Function Compute tasks in sequence, branches, or parallel. Based on the defined steps, Serverless workflow reliably coordinates task executions, tracks the state transition of each task, and executes the retry logic that you defined to ensure the smooth execution of your workflow. This topic describes how to configure orchestration for asynchronous tasks.

Prerequisites

An asynchronous task is created. For more information, see Job management.
Function Compute is granted with the permissions on Serverless workflow. For more information, see Grant Function Compute permissions to access other Alibaba Cloud services.

Procedure

Log on to the Serverless Workflow console.
In the top navigation bar, select a region.
In the left-side navigation pane, click Flows. On the page that appears, click Create Flow.
In the Flow Definition wizard of the Create Flow page. Click Create Flow with Code and configure Details and Definition. Then click Next Step.
- Details: Configure Name and Description.
- Definition: Configure the code segment in the Definition field. The following sample code provides an example:
```
version: v1
type: flow
steps:
  - type: task
    name: mytask
    resourceArn: acs:fc:{region}:{account}:services/{serviceName}.{qualifier}/functions/{functionName}
    pattern: sync  # Async invocation with sync pattern
    serviceParams:
        InvocationType: Async
```
In the Flow Config wizard of the Create Flow page, configure Config Flow Role and click Create Flow.
On details page of the created flow, click Start Execution.
You can use the preceding operations to trigger a flow task. For more information, see Asynchronous function invocation.