SSIS: Delete old files with PowerShell (via an ‘Execute Process Task’) #FileRetentionPeriod

Today I wanted to delete old files from certain folders based on a given retention period of 60 days. In my case the folders ‘Processed’ and ‘Incorrect’.
A while a go I wrote a PowerShell maintenance script that just loops through a list of pre-defined paths/folders and deletes files which are older than the given number of days…but I realised today, why not execute that similair PowerShell-script within SSIS?
Well…here’s how you could do that and in fact it’s easier that you might think!

In my example I made a Squence Container at the end of my Control Flow in SSIS which holds all the Process Tasks that delete the so called ‘old files’:

Delete-old-files-ssis-process-task-powershell-sequence-container

First step to do is to create two variables:

———————————————————————————————
@[User::ProcessedFolder] (or any other name) = "D:\DWH\Import\"
@[User::PowerShellProcessedArguments] = "ls -Path '"+ @[User::ProcessedFolder] +"' -Filter '*.csv' |? {$_.LastWriteTime -lt (get-date).AddDays(-60)} | Remove-Item"
———————————————————————————————
IMPORTANT: Make sure to modify the extention-property above in case you want to delete other types of files.

Sub-folders and files:
In case you would like to have it to also look at sub-folders, add ‘-Recurse‘ just after the extention-argument, for example:
"ls -Path '"+ @[User::ProcessedFolder] +"' -Filter '*.csv' -Recurse |? {$_.LastWriteTime -lt (get-date).AddDays(-60)} | Remove-Item"

Test run (-WhatIf):
In case you would like to verify the syntax, just add ‘-WhatIf‘ at the end, for example:
"ls -Path '"+ @[User::ProcessedFolder] +"' -Filter '*.csv' -Recurse |? {$_.LastWriteTime -lt (get-date).AddDays(-60)} | Remove-Item" -WhatIf"


Next, drag an ‘Execute Process Task‘ to your Control Flow. Now double click on it to open the editor and go to ‘Process‘. Set these properties:

Execute Process Task Editor -> Process properties:
———————————————————————————————
Executable = C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Arguments = (blank)
You can leave this one blank (will be filled by an expression during execution, see below).

WindowStyle = Hidden
Otherwise it will pop-up a PowerShell-window everytime it executes one of these. It will now pop-up a single command-window for less than a second.
———————————————————————————————


It should now look like (perhaps except the Arguments-property):
Delete-old-files-ssis-process-task-powershell-editor

Now go to ‘Expressions‘ and make sure that the ‘Arguments‘-property will be given the value of @[User::PowerShellProcessedArguments]:
Delete-old-files-ssis-process-task-powershell-expressions

That’s it!
Now run it a couple of times 🙂


I’ve used SQLCMD before to delete old files via a stored procedure, but this is a bit dangerous due to the fact that it requires you to enable SQLCMD:
https://clinthuijbers.wordpress.com/2011/08/04/ssis-sqlcmd-delete-old-txt-files/

Or use a single PowerShell script to delete all files in specific folders during maintenance?
https://clinthuijbers.wordpress.com/2014/07/09/powershell-delete-old-files-based-on-a-given-retention-period-days-maintenance/

More things you could do with PowerShell? Click here.








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