Step Functions state machine target
To start a state machine, set TargetArn to the state machine ARN and add
StepFunctionsParameters. EventBridge starts one execution per batch, and the execution input is a JSON
array of the batch's events, so a Name expression must not depend on a single event's
fields.
Parameters
| Parameter | What it sets |
|---|---|
InvocationType | EVENT calls StartExecution. REQUEST_RESPONSE calls StartSyncExecution, which only an Express state machine supports, and treats a failed execution as a failed delivery |
Name | The execution name. Must be unique per execution; omit it to let Step Functions generate one |
TraceHeader | The AWS X-Ray trace header to propagate |
InvocationTimeoutSeconds | How long EventBridge waits for the call, 1 to 30 seconds, default 30 |
Delivery role
The role needs states:StartExecution on the state machine, or
states:StartSyncExecution for REQUEST_RESPONSE.
Batching and payload
One execution per batch. Set BatchConfiguration.MaxBatchSize to 1 for one execution per
event. See Batching deliveries to a target.
