RunSpacePool hash table lookup - csv

Question

I'm putting together a powershell script that will use RunSpacePools to output a CSV file containing 1)ServerName, 2)SCCM Maintenance Window, 3)PingCheck, 4)LastRebootTimestamp.
I've got something working by using this amazing answer but my CSV file has blank lines and I'm stuck on getting the SCCM Maintenance Window into the CSV.
I'm unsure of how to complete the SCCM Maintenance Window lookup then add it to the output of the $Job.Result or could I just add it into the $ScriptBlock and let the RunSpacePool very quickly complete the lookup.
The blank CSV line is ,, and some lines don't have the extra blank line.
-edit, my thinking is now to perform the SCCM window lookup then simply pass that into the runspacepool as another param/argument.
IF(Get-Command Get-SCOMAlert -ErrorAction SilentlyContinue){}ELSE{Import-Module OperationsManager}
"Get Pend reboot servers from prod"
New-SCOMManagementGroupConnection -ComputerName ProdSCOMServer
$AlertData = get-SCOMAlert -Criteria "Severity = 1 AND ResolutionState < 254 AND Name = 'Pending Reboot detected on the ConfigMgr 2012 Client'" | Select NetbiosComputerName
"Get Pend reboot servers from test"
#For test information
New-SCOMManagementGroupConnection -ComputerName TestSCOMServer
$AlertData += Get-SCOMAlert -Criteria "Severity = 1 AND ResolutionState < 254 AND Name = 'Pending Reboot detected on the ConfigMgr 2012 Client'" | Select NetbiosComputerName
"Remove duplicates"
$AlertDataNoDupe = $AlertData | Sort NetbiosComputerName -Unique
$Global:table = #{}
"Populate hash table"
$MaintenanceWindow = Import-Csv D:\Scripts\MaintenanceWindow2.csv
$MaintenanceWindow | ForEach-Object {$Global:table[$_.Computername] = $_.CollectionName}
$scriptblock = {
Param([string]$server)
#Try getting SCCM Maintenance Window
$SCCMWindow = IF($Global:table.ContainsKey($server)){
$SCCMWindow = $table[$server]
} Else { $SCCMWindow = "Not Found!"}
$PingCheck = Test-Connection -Count 1 $server -Quiet -ErrorAction SilentlyContinue
IF($PingCheck){$PingResults = "Alive"}
ELSE{$PingResults = "Dead"}
Try{$operatingSystem = Get-WmiObject Win32_OperatingSystem -ComputerName $server -ErrorAction Stop
$LastReboot = [Management.ManagementDateTimeConverter]::ToDateTime($operatingSystem.LastBootUpTime)
$LastReboot.DateTime}
Catch{$LastReboot = "Access Denied!"}
[PSCustomObject]#{
Server=$server
Ping=$PingResults
LastReboot=$LastReboot
}#end custom object
}#script block end
$RunspacePool = [RunspaceFactory]::CreateRunspacePool(100,100)
$RunspacePool.Open()
$Jobs =
foreach ( $item in $AlertDataNoDupe )
{
$Job = [powershell]::Create().
AddScript($ScriptBlock).
AddArgument($item.NetbiosComputerName)
$Job.RunspacePool = $RunspacePool
[PSCustomObject]#{
Pipe = $Job
Result = $Job.BeginInvoke()
}
}
Write-Host 'Working..' -NoNewline
Do {
Write-Host '.' -NoNewline
Start-Sleep -Seconds 1
} While ( $Jobs.Result.IsCompleted -contains $false)
Write-Host ' Done! Writing output file.'
Write-host "Output file is d:\scripts\runspacetest5.csv"
$(ForEach ($Job in $Jobs)
{ $Job.Pipe.EndInvoke($Job.Result) }) |
Export-Csv d:\scripts\runspacetest5.csv -NoTypeInformation
$RunspacePool.Close()
$RunspacePool.Dispose()

Answer 1

Not sure if this is the best way but I ended up using the following which presents a problem in the event there are two entries in MaintenanceWindow2.csv because it returns System.Object[]
$scriptblock = {
Param([string]$server)
$csv = Import-Csv D:\Scripts\MaintenanceWindow2.csv
$window = $csv | where {$_.Computername -eq "$server"} | % CollectionName
$SCCMWindow = IF ($window){$window}ELSE{"NoDeadline"}
}