Used by workers to report to the service that the task represented by
the specified taskToken is still making progress. This action resets
the Heartbeat clock. The Heartbeat threshold is specified in the
state machine's Amazon States Language definition. This action does not
in itself create an event in the execution history. However, if the task
times out, the execution history contains an ActivityTimedOut event.
sfn_send_task_heartbeat(taskToken)[required] The token that represents this task. Task tokens are generated by the service when the tasks are assigned to a worker (see GetActivityTaskOutput\$taskToken).
svc$send_task_heartbeat( taskToken = "string" )
The Timeout of a task, defined in the state machine's Amazon States
Language definition, is its maximum allowed duration, regardless of the
number of SendTaskHeartbeat requests received.
This operation is only useful for long-lived tasks to report the liveliness of the task.