Hashtables and RunSpaces in powershell - powershell

Question

I am having some problems with updating data in a list from the results of a hash table. I am 99% sure it is due to the lack of understanding of what i am doing.
I am generating a $list of servers from a CSV. the CSV contains Servername, domain, description, plus some additional blank columns for use later.
what i am trying to do in a nutshell: i need to pull the down processes from a list of remote servers. to do this i am throwing each server from the list and function into its own runspace, the Hashtable is updating as expected. But i can not update the original $list i have.
here is my code:
Function OpenFile ($FilePath) {
$OFDiag = new-object system.windows.forms.openfiledialog
$OFDiag.filter = 'CSV (*.csv) | *.csv'
$OFDiag.ShowDialog() | out-null
$OFDiag.filename
}
# Create Primary Variables
$FilePath = OpenFile
$list = (get-content $FilePath) -replace '\(',' -' #ALL Servers and Groups need to remove parenthesis
$list = $list -replace '\)' #finish up removing the parenthesis
$list = $list -replace ' Or WorkGroup'
$list = convertFrom-CSV $list | select 'Name', 'Computer_Description', 'Domain' #Need to convert the list into a CSV formatted table.
$list = $list | sort Name
$list | Add-Member -NotePropertyName 'LastReboot' -NotePropertyValue $null
$list | Add-Member -NotePropertyName 'LastDeployment' -NotePropertyValue $null
$list | Add-Member -NotePropertyName 'RebootStatus' -NotePropertyValue $null
$list | Add-Member -NotePropertyName 'DownProcess' -NotePropertyValue $null
$list | Add-Member -NotePropertyName 'EnabledStatus' -NotePropertyValue $null
$list | Add-Member -NotePropertyName 'RDP' -NotePropertyValue $null
$list | Add-Member -NotePropertyName 'SchedTask' -NotePropertyValue $null
$servers = $list | %{$_.Name} | sort #ALL SERVERS - ONLY Servernames
$ServProSel = {
#
# Checks for Running Services and Processes.
# This Makes a determination as to what service/process groups should be checked.
# The Information as to what processes to look for are sent to the ProSer_Check function
# information from there is sent to the ServerStatus Tab
#
#Write-Host 'starting ServerProSel'
Param ($computer,$cred,$grpName,$hash)
#$cred = $(get-Variable "$Domain" -valueOnly)
$ck =#{} #$(Get-Variable -name "SCP_$serName" -ValueOnly)
Function ProSer_Check {
# This is the actual function that is run on the remote system to check
# for processes and services.
param ( [array] $Prcs,
[string] $Computer )
$script:chkres =#()
foreach ($p in $Prcs){
$script:res = Get-Process -name $p -ErrorAction SilentlyContinue
if (!$res) {
$chk = "$p -DOWN`r`n"
$chkres += $chk
}
}
if ($chkres.count -eq 0){
$chkres = "All Processes Up"}
Return $chkres
}
switch -Regex ($grpName){
'Demonstration' {
$Prcs = #('Process.Service'); break}
'Historian' {
$Prcs =#('Process.Service'); break}
'Models' {
$Prcs =#('UpdaterServer'); break}
'Inflictor' {
$Prcs =#('Automation.EngineService','Automation.Manager.Service','Automation.SmfLauncher','postgres','Redundancy.Server','WatchDog.Service'); break}
'Simulator' {
$Prcs =#('proc','moni','server','serve','clerk','web'); break}
'WebServer' {
$Prcs =#('w3wp','VShell'); break}
default {
$Prcs =#('svchost'); break}
}
$R = invoke-command -credential $cred -computername $Computer -scriptblock ${function:ProSer_Check} -ArgumentList $Prcs,$Computer
$hash[$Computer]=([string]$R)
}
$Script:runspaces = New-Object System.Collections.ArrayList
$Global:hash = [hashtable]::Synchronized(#{})
$global:sessionstate = [system.management.automation.runspaces.initialsessionstate]::CreateDefault()
$global:runspacepool = [runspacefactory]::CreateRunspacePool(1, 10, $sessionstate, $Host)
$global:runspacepool.Open()
Function SendToRunSpace {
$function = $args[0]
#$function
$powershell = [powershell]::Create().AddScript($function).AddArgument($computer.name).AddArgument($cred).AddArgument($grpName).AddArgument($hash)
$powershell.RunspacePool = $global:runspacepool
#$hash = #{Name=$computer.name;DownProcess = "Waiting.."}
$temp = "" | Select-Object PowerShell,Runspace,Computer
$Temp.Computer = $Computer
$temp.PowerShell = $powershell
$temp.Runspace = $powershell.BeginInvoke()
Write-Verbose ("Adding {0} collection" -f $temp.Computer)
$runspaces.Add($temp) | Out-Null
}
ForEach ($Computer in $list) {
$domain = $computer.Domain
$grpName = $computer.'Computer_Description'
$cred = $(get-Variable "$Domain" -valueOnly)
#Create the powershell instance and supply the scriptblock with the other parameters
if(!$(Get-Variable "TEST_$domain" -ValueOnly)){
CredCheck $computer.name $cred
}
#SendToRunSpace $scriptBlock $computer $domain $global:hash
SendToRunSpace $ServProSel $computer $cred $grpName $global:hash
}
I am running this in PowerShell ISE so i can edit on the fly and test things. When i run this code i generate the $list and $hash items. Ultimately i would like to grab the value out of the $hash for the server and update the corresponding server information in the $list object.
or is there a better way to do this? is the Hashtable the only way to Synchronize data from the runspaces to the current process?