2016Jan_ScriptingGames.ps1

Function Get-Uptime {
	[CmdletBinding()]
	param ( 
		[parameter(ValueFromPipeline=$true,ValueFromPipeLineByPropertyName=$true,Position=0)] 
		[alias("PScomputername")]
			[string[]]$ComputerName='localhost'
	) 
	
	Begin {
		$results = @()
		$ISS = [system.management.automation.runspaces.initialsessionstate]::CreateDefault()
		$RunspacePool = [runspacefactory]::CreateRunspacePool(1, 75, $ISS, $Host)
		$RunspacePool.Open()
		$Jobs = @()
		$Scriptblock = {
			param (
			$computer
			)	
		
			if (Test-Connection -ComputerName $computer -quiet -Count 1) {
				try {
					$OS = Get-WmiObject -ComputerName $computer -Class Win32_OperatingSystem
					$lastboottime = $OS.ConvertToDateTime($OS.LastBootUpTime)
					$uptime = [Math]::Round(((Get-Date) - $lastboottime).totaldays)
					if ($uptime -ge 30) {$mightneedpatched = $true } else {$mightneedpatched = $false}
					$status = "OK"
				} catch {
					$return = New-Object -TypeName PSCustomObject
					$Return | Add-Member -MemberType NoteProperty -Name "ComputerName" -Value $computer
					$return | Add-Member -MemberType NoteProperty -Name "StartTime" -Value $null
					$return | Add-Member -MemberType NoteProperty -Name "Uptime(Days)" -Value $null
					$return | Add-Member -MemberType NoteProperty -Name "MightNeedPatched" -Value $null
					$Return | Add-Member -MemberType NoteProperty -Name "Status" -Value "ERROR"
					return $return
				}
				$return = New-Object -TypeName PSCustomObject
				$Return | Add-Member -MemberType NoteProperty -Name "ComputerName" -Value $computer 
				$return | Add-Member -MemberType NoteProperty -Name "StartTime" -Value $lastboottime
				$return | Add-Member -MemberType NoteProperty -Name "Uptime(Days)" -Value $uptime
				$return | Add-Member -MemberType NoteProperty -Name "MightNeedPatched" -Value $mightneedpatched
				$Return | Add-Member -MemberType NoteProperty -Name "Status" -Value $status
				return $return		
			} else {
				Write-Warning "$computer is offline"
				$return = New-Object -TypeName PSCustomObject
				$Return | Add-Member -MemberType NoteProperty -Name ComputerName -Value $computer
				$return | Add-Member -MemberType NoteProperty -Name "StartTime" -Value $null
				$return | Add-Member -MemberType NoteProperty -Name "Uptime(Days)" -Value $null
				$return | Add-Member -MemberType NoteProperty -Name "MightNeedPatched" -Value $null
				$Return | Add-Member -MemberType NoteProperty -Name Status -Value "OFFLINE"		
				return $return
			}
		}		
	}
	
	Process {
		foreach ($computer in $computername) {	
			$PowershellThread = [powershell]::Create().AddScript($scriptblock)
			$PowershellThread.AddParameter("computer", $computer) | out-null
			$PowershellThread.RunspacePool = $RunspacePool
			$Handle = $PowershellThread.BeginInvoke()
		    $Job = "" | Select-Object Handle, Thread, object
		    $Job.Handle = $Handle
		    $Job.Thread = $PowershellThread
		    $Job.Object = $computer.ToString()
		    $Jobs += $Job
		}
	}
	End {
		While (@($Jobs | Where-Object {$_.Handle -ne $Null}).count -gt 0)  {
	    Write-Progress -Activity "Waiting for Jobs - $(75 - $($RunspacePool.GetAvailableRunspaces())) of 75 runspaces running" `
			-PercentComplete (($Jobs.count - $($($Jobs | Where-Object {$_.Handle.IsCompleted -eq $False}).count)) / $Jobs.Count * 100) `
	   		-Status "$(@($($Jobs | Where-Object {$_.Handle.IsCompleted -eq $False})).count) remaining - $($($Jobs | Where-Object {$_.Handle.IsCompleted -eq $False}).object)" 
						
		    ForEach ($Job in $($Jobs | Where-Object {$_.Handle.IsCompleted -eq $True})){
		        $Job.Thread.EndInvoke($Job.Handle)
		        $Job.Thread.Dispose()
		        $Job.Thread = $Null
		        $Job.Handle = $Null
		        $ResultTimer = Get-Date
		    }
		}

		$RunspacePool.Close() | Out-Null
		$RunspacePool.Dispose() | Out-Null			
	}
}