Add scripts and example config

Configuration/Config-Example.psd1

+@{
+    CitrixDC = "delivercontroller.sitename.xy"
+    MachineNamePrefix = "DOMAINNAME\citrix-vm-"
+    
+    PrometheusCollectorPrefix = "citrix"
+    PrometheusCollectorDir = "C:\ProgramData\windows_exporter\textfile_inputs"
+    PrometheusCollectorFile = "citrix_xendesktop.prom"
+
+    StripCatalogPrefix = "CITRIX - "
+}
\ No newline at end of file

New-CitrixMetrics.ps1

+
+$ErrorActionPreference = "Stop"
+
+$Config = Import-PowerShellDataFile "$PSScriptRoot\Configuration\Config.psd1"
+
+Add-PSSnapIn Citrix.*
+
+$Pfx = $Config.PrometheusCollectorPrefix
+$MSPrefix = "${Pfx}_machine_status"
+$PfxDuration = "${Pfx}_collector_duration_ms"
+
+
+function Write-Performance {
+    param (
+        # the collector's name, e.g. "licenses"
+        [Parameter(Mandatory=$True)]
+        [string]
+        $Name,
+
+        # the collector's command, e.g. "Get-BrokerSite"
+        [Parameter(Mandatory=$True)]
+        [string]
+        $Command,
+
+        # the stopwatch instance used to measure the collector's performance
+        [Parameter(Mandatory=$True)]
+        [Diagnostics.Stopwatch]
+        $StopWatch
+    )
+    if ($StopWatch.IsRunning) {
+        $StopWatch.Stop()
+    }
+    $Message = "${PfxDuration}{collector=`"$Name`", command=`"$Command`"} "
+    $Message += $($StopWatch.ElapsedMilliseconds)
+    Write-Output $Message
+
+}
+
+
+$StopWatch = [Diagnostics.Stopwatch]::StartNew()
+$BrokerSite = Get-BrokerSite
+Write-Performance -Name "licenses" -Command "Get-BrokerSite" -StopWatch $StopWatch
+Write-Output "${Pfx}_licenses_sessions_active{} $($BrokerSite.LicensedSessionsActive)"
+Write-Output "${Pfx}_licenses_peak_concurrent_users{} $($BrokerSite.PeakConcurrentLicenseUsers)"
+
+# Get-BrokerCatalog
+# Get-BrokerController
+# Get-BrokerDesktopGroup
+
+$StopWatch = [Diagnostics.Stopwatch]::StartNew()
+$MachineStatus = & "$PSScriptRoot\Get-MachineStatus.ps1" -Format rawfull
+Write-Performance -Name "machine_status" -Command "Get-BrokerMachine" -StopWatch $StopWatch
+
+foreach ($Machine in $MachineStatus) {
+    $MachineName = $Machine.MachineName.split("\")[1]
+    $Catalog = $Machine.CatalogName
+    if ($Config.StripCatalogPrefix.Length -gt 0) {
+        $Catalog = $Catalog.Replace($Config.StripCatalogPrefix, "")
+    }
+    
+    $Status = $Machine.SummaryState
+    $Maintenance = 0
+    if ($Machine.InMaintenanceMode -eq $True) {
+        $Maintenance = 1
+    }
+    $Username = $Machine.SessionUserName
+    if ($null -ne $Username) {
+        $Username = $Username.split("\")[1]
+    }
+    $Name = $Machine.AssociatedUserFullNames
+    $Email= $Machine.AssociatedUserUPNs
+    $Session_Start = $Machine.SessionStartTime
+    $Session_Change = $Machine.SessionStateChangeTime
+    
+    $Entry = "$MSPrefix{"
+    $Entry += "machine_name=`"$MachineName`", "
+    # $Entry += "catalog=`"$Catalog`", "
+    $Entry += "status=`"$Status`", "
+    $Entry += "maintenance=`"$Maintenance`", "
+    $Entry += "username=`"$Username`", "
+    $Entry += "name=`"$Name`", "
+    $Entry += "email=`"$Email`", "
+    $Entry += "session_start=`"$Session_Start`", "
+    $Entry += "session_change=`"$Session_Change`""
+    $Entry += "} 1"
+    Write-Output $Entry
+}

citrix_collector.ps1

+
+$Config = Import-PowerShellDataFile "$PSScriptRoot\Configuration\Config.psd1"
+$FileName = "$($Config.PrometheusCollectorDir)\$($Config.PrometheusCollectorFile)"
+
+while ($True) {
+    & .\New-CitrixMetrics.ps1 | Out-File $FileName -Encoding "UTF8"
+    Start-Sleep -Seconds 30
+}