Wait for file

Description

The Wait For File action waits and periodically checks for a file.

This workflow action will sleep and periodically check whether the specified file exists after which the flow will continue.

The action can either wait indefinitely for the file or it can time out after a certain time.

Options

Option	Description
Workflow action name	The name of the workflow action.
Check cycle time	The time in seconds between checking for the file. The file will be checked for in the start of the execution and then every "check cycle time" seconds until the maximum timeout is reached. A workflow can only be stopped every "check cycle time" as else the workflow action will be sleeping. A check cycle time of 30 or 60 seconds seems to be a good trade-off between the period until the file is detected and the required CPU usage.
File name	The name and path of the file to wait for.
File size check	When this is switched on, once the workflow action detects the specified file, and will only continue if the file size hasn’t changed the last check "cycle time seconds". This is useful in cases where a file is created in the final place, and another process is still writing to the file. (As a best practice, files should be written to a temporary location, and then moved when completed)
Workflow action name	The name of the workflow action. This name has to be unique in a single workflow.
Maximum timeout	The maximum timeout in number of seconds, or 0 to wait indefinitely. This is the number seconds after which the flow will continue even if the file was not created. When the timeout is reached the "Success on timeout" option will determine whether the outgoing success or failure hop will be followed.
Success on timeout	This option determines what to do when the "Maximum timeout" has been reached and the file has not been found. If enabled, the workflow action will evaluate successfully, and the outgoing success hop will be followed.

Option

Description

Workflow action name

The name of the workflow action.

Check cycle time

The time in seconds between checking for the file. The file will be checked for in the start of the execution and then every "check cycle time" seconds until the maximum timeout is reached. A workflow can only be stopped every "check cycle time" as else the workflow action will be sleeping. A check cycle time of 30 or 60 seconds seems to be a good trade-off between the period until the file is detected and the required CPU usage.

File name

The name and path of the file to wait for.

File size check

When this is switched on, once the workflow action detects the specified file, and will only continue if the file size hasn’t changed the last check "cycle time seconds". This is useful in cases where a file is created in the final place, and another process is still writing to the file. (As a best practice, files should be written to a temporary location, and then moved when completed)

Workflow action name

The name of the workflow action. This name has to be unique in a single workflow.

Maximum timeout

The maximum timeout in number of seconds, or 0 to wait indefinitely. This is the number seconds after which the flow will continue even if the file was not created. When the timeout is reached the "Success on timeout" option will determine whether the outgoing success or failure hop will be followed.

Success on timeout

This option determines what to do when the "Maximum timeout" has been reached and the file has not been found. If enabled, the workflow action will evaluate successfully, and the outgoing success hop will be followed.