Skip to content

Exists#

Screenshot showing a large image.

When activated the exists task checks if a given file exists (the file path can be provided by input or defined on the task settings).

Screenshot showing a path result with an "O" and "i" in the background.

Inputs#

Name Data Type Description
path String Path of the file
attempts Integer Number of attempts to perform this operation. Default is 1 attempt
sleepBetweenAttempts Integer Interval of time between the attempts. Default is 1000ms
Activate any Activate the task

Outputs#

Name Data Type Description
result Boolean Triggered when the task is executed. This is the result of 'file exists' verification
Success Boolean Triggered when the task is executed with success
Error Error Triggered when the task failed for some reason

Settings#

On the General tab, you have the usual settings and the following settings:

Name Data Type Values Default Description
File/Directory path String Path of the file
Number of attempts Integer 1 Number of attempts to perform this operation.
Sleep Between Attempts Integer 1000 Interval of time between the attempts.

For the File/Directory path you can use tokens as represented below:

Available tokens:
  ${path} - Watched path
  ${archive} - Archive path
  ${temp} - Temporary directory of the user
  ${id} - DriverId ("\" chars replaced with "_")

Examples:
  ${path}\subdir
  ${path}\subdir\file.txt
  ${temp}\files\${id}\Error
  c:\source\Processedexists.csv

Screenshot showing settings options.

Behavior#

In this task you choose a driver when dropping it into the workflow (if you have more than one driver associated with the controller).

Upon activation, will send a Exists command to the driver where it will check the path location exists. If it doesn't, will retry attempts times, waiting sleepBetweenAttempts milliseconds each time.

When the operation is executed with success, both Success and result outputs emit their respective values. In case of the task , for some reason, is not able perform the operation, an Error is emitted.

Remarks#

There is no particular remark to be made.