PoshRSJob Looping through file directory - multithreading

Question

I am trying to loop through a directory (sorting by smallest file), get the path, and the file name and then pump those results into a utility.exe program.
I am trying to do this multi threading with PoshRSJob, but I am not even seeing the utility program show up in task manager, I am getting an error "A null key is not allowed in a hash literal.", for every file that exists (if 50 files are in the directory, then I get 50 errors). I also cannot test if the throttling is working, because nothing is actually running.
Import-Module C:\PoshRSJob.psm1
Function MultiThread($SourcePath,$DestinationPath,$CommandArg, $MaxThreads){
if($CommandArg -eq "import") {
$fileExt = "txt"
}else{
$fileExt = "ini"
}
$ScriptBlock = {
Param($outfile, $cmdType, $fileExtension)
[pscustomobject] #{
#get the full path
$filepath = $_.fullname
#get file name (minus extension)
$filename = $_.basename
#build output directory
$destinationFile = "$($outfile)\$($filename).$($fileExtension)"
#command to run
$null = .\utility.exe $cmdType -source `"$filepath`" -target `"$destinationFile`"
}
}
#get the object of the passed source directory, and pipe it into start-rsjob
Get-ChildItem $SourcePath | Sort-Object length | Start-RSJob -ScriptBlock $ScriptBlock -ArgumentList $DestinationPath, $CommandArg, $fileExt -Throttle $MaxThreads
Wait-RSJob -ShowProgress | Receive-RSJob
Get-RSJob | Receive-RSJob
}
MultiThread "D:\input" "D:\output" "import" 3

Answer 1

Your scriptblock is creating an object where you are defining $null = .\utility.exe +++ as a property. As it says, value of $null (nothing) can't be a property name.. I would suggest just running the lines..
You might also want to change the Wait-RSJob-part. You don't specify a job, so it never waits for anything. Try:
Try changing the scriptblock to:
Import-Module C:\PoshRSJob.psm1
Function MultiThread($SourcePath,$DestinationPath,$CommandArg, $MaxThreads){
if($CommandArg -eq "import") {
$fileExt = "txt"
}else{
$fileExt = "ini"
}
$ScriptBlock = {
Param($outfile, $cmdType, $fileExtension)
#get the full path
$filepath = $_.fullname
#get file name (minus extension)
$filename = $_.basename
#build output directory
$destinationFile = "$($outfile)\$($filename).$($fileExtension)"
#command to run
$null = .\utility.exe $cmdType -source `"$filepath`" -target `"$destinationFile`"
}
#get the object of the passed source directory, and pipe it into start-rsjob
Get-ChildItem $SourcePath | Sort-Object length | Start-RSJob -ScriptBlock $ScriptBlock -ArgumentList $DestinationPath, $CommandArg, $fileExt -Throttle $MaxThreads
Get-RSJob | Wait-RSJob -ShowProgress | Receive-RSJob
}
MultiThread "D:\input" "D:\output" "import" 3