Robot
2023.4
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Robot User Guide
Last updated 2024年4月3日

Stopping a Process

A process can either be stopped through Soft Stop or Kill commands.

Soft Stop command

The Soft Stop command marks the process in a should stop state. This state can be queried from the still executing workflow using the Should Stop activity. The workflow should explicitly handle this state and finish. The workflow does not automatically stop without handling the should stop state. See REFramework for a scenario that leverages Soft Stop.

The Stop command is designed for unattended automations and is available only in Orchestrator. In Orchestrator, the Soft Stop command is named Stop.

Kill command

The Kill command first sends a Cancel request to the workflow. The workflow Cancel request is distinct from should stop.Cancel is a workflow signal that is automatically handled by the workflow. The signal causes the activities to cancel in cascade while allowing Finally blocks of the workflow to execute clean-up steps. If the Cancel signal does not stop the workflow in three seconds, the job is killed by forcibly stopping any running activities at any point in their execution.

The Kill command is designed for attended automations and is available in Orchestrator and in desktop clients and APIs such as Assistant,Studio,RobotJS. In Desktop clients, the Kill command is named Stop.

The REFramework Process Scenario

REFramework leverages the Soft Stop command.

When a process is stopped, the block containing the error logic is skipped and the final block is executed. This causes the values for the BusinessError and SystemError to stay null and the overall process status is considered successful. The behavior described is intended.

Try-Catch Scenario

During a Try-Catch workflow, when a process is stopped, the transaction status can show as successful when it actually did not complete.

Cancelling a Process

If the execution is in the Try or Catch block when the Cancel command is received by the Robot, it skips to the Finally block which checks for any errors. If no errors are found, then the Finally block thinks the execution completed successfully as there are no failure events (they are blank).

Killing a Process

If the execution is in the Try or Catch block when the Kill command is received by the Robot, it first tries to Cancel the process, skipping to the Finally block. If the logic inside the Finally block is not finished in three seconds since receiving the Cancel command, the whole execution is killed and the overall process is successful in the logs as no errors were recorded in the Catch block since it was skipped.

Avoiding False Positives
  • Setting the Process status to Successful should be done only inside the Try block, after the Business Logic is completed.
  • Setting the status to Failed should be done only inside the Catch block, after the error handling logic is completed.
  • In the Finally block, there should be only cleanup logic present, since it is executed no matter if the execution was successful or not.

Ensure error logic is executed

If the block that contains the error logic is skipped, the values for BusinessError and SystemError stay null and the overall process status is considered successful, as no errors were recorded.

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