# prtg-ExCasUser.ps1
#
# 20130124 Ver 1.0  Frank Carius
#
#
# PRTG Custom Module to get the current active Users für OWA/RPC
# parts
# http://www.mikepfeiffer.net/2011/04/determine-the-number-of-active-Users-on-exchange-2010-client-access-servers-with-PowerShell/
 
param (
	[string]$server= "nawex001"  # specify Servers, multiple servers using "comma" as separator
)

write-host "Start PRTG Sensor" 

write-host "Server:" $Server 

$serverlist = $server.split(",")
write-host "Serverlist count:" $Serverlist.count 

$result="<prtg>`r`n"
foreach ($server in $serverlist){
	$RPC = (Get-Counter "\MSExchange RpcClientAccess\User Count" -ComputerName $server).CounterSamples[0].CookedValue
	$OWA = (Get-Counter "\MSExchange OWA\Current unique Users" -ComputerName $server).CounterSamples[0].CookedValue
	$EAS = (Get-Counter "\MSExchange ActiveSync\Ping Commands Pending" -ComputerName $server).CounterSamples[0].CookedValue

	$result+="  <result>`r`n"
	$result+="    <channel>OWA("+$server+")</channel>`r`n"
	$result+="    <value>"+$OWA+"</value>`r`n"
	$result+="    <unit>Count</unit>`r`n"
	$result+="    <mode>Absolute</mode>`r`n"
	$result+="  </result>`r`n"

	$result+="  <result>`r`n"
	$result+="    <channel>RPC("+$server+")</channel>`r`n"
	$result+="    <value>"+$RPC+"</value>`r`n"
	$result+="    <unit>Count</unit>`r`n"
	$result+="    <mode>Absolute</mode>`r`n"
	$result+="  </result>`r`n"

	$result+="  <result>`r`n"
	$result+="    <channel>EAS("+$server+")</channel>`r`n"
	$result+="    <value>"+$EAS+"</value>`r`n"
	$result+="    <unit>Count</unit>`r`n"
	$result+="    <mode>Absolute</mode>`r`n"
	$result+="  </result>`r`n"
}

$result+="<text>ExCASUser:"+$arg+"</text>`r`n"
$result+="</prtg>"

write-host "End: ExitCode "$error.count

Write-host "Sending Result to output pipeline"
$result

if ($error) {
	#write-host "Found Errors"
	EXIT 1
}