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monitor folder for new files

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Hi,

I want notifications only when in a folder arrives a new file, how it is possible?

I have used the folder sensor but I only know to put notifications when the folder changes, I mean I receive notifications in every change, I only want notifications when the folder receives a new file.

It is possible?

Thanks!

folder-sensor prtg sensor

Created on Oct 24, 2018 9:36:34 AM by  zurerita (0) 1



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This would be possible if you keep some kind of list behind it with a custom script - there might even be some other way(s) to accomplish this...

Can you let us know some of the background - what is really happening there and why this is important and so on - sometimes it helps to understand the reason, why and what you want to do as well as the big picture to find the best solution.

Regards

Florian Rossmark

www.it-admins.com

Created on Oct 24, 2018 2:14:06 PM by  Florian Rossmark (4,320) 4 2



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I only want to receive a mail when a file arrives in a shared folder. Only that. I don't want to know if there are changes in that directory.

Thanks for your answer! :)

Created on Oct 24, 2018 2:36:57 PM by  zurerita (0) 1



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Hmm... try this:

Dim strPath

If WScript.Arguments.Count = 1 Then
	strPath = WScript.Arguments.Item(0)
Else
	Wscript.Echo "Usage: cscript GenericLogSensor.vbs ""C:\path"""
	Wscript.Quit
End If

Dim strReturn
strReturn = -99 'default return value = -99 would mean the script didn't find anything - value in minutes

Dim objFS
Set objFS = CreateObject("Scripting.FileSystemObject")
	If objFS.FolderExists(strPath) Then
		Dim objFolder
		Set objFolder = objFS.GetFolder(strPath)
			For Each objFile in objFolder.Files			
				wscript.echo DateDiff("n",objFile.DateCreated,Now())
				If DateDiff("n",objFile.DateCreated,Now()) <= strReturn Then
					strReturn = DateDiff("n",objFile.DateCreated,Now()) 'this will find the newest file...
				End If
			Next			
		Set objFolder = Nothing
	End If
Set objFS = Nothing 


WScript.echo "<prtg>"
	WScript.echo "<result>"
	WScript.echo "<channel>Newest file age in minutes</channel><value>" & strReturn & "</value>"
	WScript.echo "</result>"
WScript.echo "</prtg>"

The script is an advanced EXE/XML sensor and needs to be placed in the directory:

C:\Program Files (x86)\PRTG Network Monitor\Custom Sensors\EXEXML

It is a VBS script script - so the extension is .VBS - e.g. NewestFile.vbs

You can test it on a command prompt like this:

CSCRIPT NewestFile.vbs "c:\testfolder"

As you can see - it expects a PATH parameter - use text-quotes for the path as well.. even in PRTG when you set the parameters...

Return values:

  • it returns a TIME in MINUTES or -99
  • -99 means that the script had an issue in general
  • 0 means the newest file found was created within 0 minutes
  • 1 or 2 or 3 or 4 ...... 999999 means the file was created N minutes ago

So - what do you do with this?

  • You create an EXE Advanced sensor pointing it to the directory as parameter
  • you edit the sensor channel "Newest file age in minutes" and set limits
    • upper limit: 6 minutes
  • you schedule the sensor to run every 5 minutes

What will happen:

  • every 5 minutes the sensor will execute
  • if there is a file that is newer then 6 minutes it will raise an error
    • this includes -99 what means there was a generic Error
    • this includes 0 what means within the past 1 minute
    • this accounts for the slack between the sensor execution of every 5 minutes
    • this will set the sensor back to NORMAL after the second or third run - meaning after 10 minutes, 15 minutes - assuming you run it every 5 minutes ...

The 5 minutes and 6 minutes is just an example - there is a slack / the execution time is not exactly every 5 minutes, so you need to account for that, that's why I suggested 6 minutes or newer as lower error limit - the NOTIFICATION needs to be adjust as well accordingly - you probably just want ERROR notifications...

Note: This will not fire for every new file - for this you would need a real file-system monitoring solution that works with AUDITING - but it at least will raise an error state of the sensor if a file (or multiple) have been created...

Hope this helps you - the script could be adjusted more and report more advanced information in theory - but I think this should cover your request already...

Regards

Florian Rossmark

www.it-admins.com

Created on Oct 24, 2018 4:00:44 PM by  Florian Rossmark (4,320) 4 2



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Hi! thanks for your answer Florian!
I did it exactly like you posted but I think it isn't monitoring the folder. Do u know if this script could be work in a shared folder? I have put the path: "
10.x.x.x\project$\..." is it ok?
I think the problem can be there, but maybe is in other place... The sensor never fall, I put the limit parameters also.

Any idea?

Thanks again!

Created on Oct 25, 2018 9:29:33 AM by  zurerita (0) 1

Last change on Oct 25, 2018 10:03:03 AM by  Luciano Lingnau [Paessler Support]



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Hi,

If it all the path would be more like "
ip_or_hostname\share\folder
" - now it depends - make sure the PRTG Probe account or the credentials that are used on that server have permissions to that share path - likely the probe.

Would actually suggest to logon to the PRTG server with those credentials and test it.

Further would I try and execute the script on the CMD / command prompt as suggested - via CSCRIPT - to see how it behaves and if it works...

What results do you see from the probe? There must be a numeric result.

Regards

Florian

Created on Oct 25, 2018 4:10:58 PM by  Florian Rossmark (4,320) 4 2

Last change on Oct 26, 2018 8:56:06 AM by  Luciano Lingnau [Paessler Support]



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