Use PowerShell scripts to monitor AF Health Check counter

If you are unable to run Internet Information Services (IIS) on your system, you might use Windows PowerShell scripts to create a listener to monitor the AF Server Health tag, as demonstrated by the following example code fragments.

1. Create a listener.

   For example:

   $endpoint = new-object System.Net.IPEndPoint
   ([system.net.ipaddress]::any, $port)

   $listener = new-object System.Net.Sockets.TcpListener
   $endpoint

   $listener.start()

2. Read the AF Server Health tag.

   For example:

   $counter_path = "\PI AF Server\Health"

   $counters_value = get-counter -counter $counter_path |
   Select-Object –ExpandProperty CounterSamples |
   Select-Object CookedValue

3. Parse the response.

   For example:

   $Pass = Select-String -inputObject $counters_value
   -pattern "CookedValue=1" -quiet

   If ($Pass){$responseString=$up}else{$responseString=$down}

4. Send the response to the listener.

   For example:

   $sendBytes = [System.Text.Encoding]::ASCII.GetBytes($responseString) + $CR + $LF

   $stream.Write($sendBytes,0,$sendBytes.Length)