Add Memory-Check, with extension for memory-provider (pagefile)

lib/plugins/Invoke-IcingaCheckMemory.psm1

@@ -0,0 +1,63 @@
+Import-IcingaLib provider\memory;
+
+<#
+.SYNOPSIS
+   Checks on memory usage
+.DESCRIPTION
+   Invoke-IcingaCheckMemory returns either 'OK', 'WARNING' or 'CRITICAL', based on the thresholds set.
+   e.g memory is currently at 60% usage, WARNING is set to 50, CRITICAL is set to 90. In this case the check will return WARNING.
+
+   More Information on https://github.com/LordHepipud/icinga-module-windows
+.FUNCTIONALITY
+   This module is intended to be used to check on memory usage.
+   Based on the thresholds set the status will change between 'OK', 'WARNING' or 'CRITICAL'. The function will return one of these given codes.
+.EXAMPLE
+   PS>Invoke-IcingaCheckMemory -Verbosity 3 -Warning 60 -Critical 80
+   [WARNING]: % Memory Check 78.74 is greater than 60
+   1
+.EXAMPLE
+   PS> Invoke-IcingaCheckMemory -Verbosity 3 -Warning 60 -Critical 80 -PageFile
+   [OK]: % Memory Check is 10.99
+   0
+.PARAMETER Warning
+   Used to specify a Warning threshold. In this case an integer value.
+.PARAMETER Critical
+   Used to specify a Critical threshold. In this case an integer value.
+.PARAMETER Pagefile
+   Switch which determines whether the pagefile should be used instead.
+   If not set memory will be checked.
+.INPUTS
+   System.String
+.OUTPUTS
+   System.String
+.LINK
+   https://github.com/LordHepipud/icinga-module-windows
+.NOTES
+#>
+
+function Invoke-IcingaCheckMemory()
+{
+    param(
+        $Critical           = $null,
+        $Warning            = $null,
+        [switch]$PageFile,
+        [ValidateSet(0, 1, 2, 3)]
+        [int]$Verbosity     = 0
+     );
+
+    if ($PageFile -eq $TRUE) {
+        $MemoryData = (Get-IcingaPageFilePerformanceCounter).'(*)\% usage'.'\Paging File(_Total)\% usage'.value
+    } else {
+        $MemoryData = (Get-IcingaMemoryPerformanceCounter).'% committed bytes in use'.value;
+    }
+
+    $MemoryCheck = New-IcingaCheck -Name '% Memory Check' -Value $MemoryData -NoPerfData;
+
+    $MemoryCheck.WarnOutOfRange(
+        ($Warning)
+     ).CritOutOfRange(
+        ($Critical)
+     ) | Out-Null;
+
+     return (New-IcingaCheckresult -Check $MemoryCheck -NoPerfData $TRUE -Compile);
+}

lib/provider/memory/Get-IcingaMemoryPerformanceCounter.psm1

@@ -11,3 +11,17 @@ function Get-IcingaMemoryPerformanceCounter()
 
     return $Result;
 }
+
+function Get-IcingaPageFilePerformanceCounter()
+{
+    $PageFileStart       = (Show-IcingaPerformanceCounters -CounterCategory 'Paging File');
+    $PageFileCounter     = New-IcingaPerformanceCounterArray -Counter $PageFileStart;
+    [hashtable]$Result = @{};
+
+    foreach ($item in $PageFileCounter.Keys) {
+        $counter       = $item.trimstart('\Paging File\');
+        $Result.Add($counter, $PageFileCounter[$item]);
+    }
+
+    return $Result;
+}