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https://github.com/Icinga/icinga-powershell-framework.git
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50 lines
2.5 KiB
PowerShell
50 lines
2.5 KiB
PowerShell
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#
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# Provide the name of a category to fetch all available counters and
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# if there are any instances assigned to it
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#
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function Show-IcingaPerformanceCounters()
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{
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param ([string]$CounterCategory);
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[hashtable]$counters = @{};
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try {
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# At first create our Performance Counter object for the category we specified
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$Category = New-Object System.Diagnostics.PerformanceCounterCategory($CounterCategory);
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# Now loop through all keys to find the name of available counters
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foreach ($counter in $Category.ReadCategory().Keys) {
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[string]$CounterInstanceAddition = '';
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# As counters might also have instances (like interfaces, disks, paging file), we should
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# try to load them as well
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foreach ($instance in $Category.ReadCategory()[$counter].Keys) {
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# If we do not match this magic string, we have multiple instances we can access
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# to get informations for different disks, volumes and interfaces for example
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if ($instance -ne 'systemdiagnosticsperfcounterlibsingleinstance') {
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# Re-Write the name we return of the counter to something we can use directly
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# within our modules to load data from. A returned counter will look like this
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# for example:
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# \PhysicalDisk(*)\avg. disk bytes/read
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[string]$UsableCounterName = [string]::Format('\{0}(*)\{1}', $CounterCategory, $counter);
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if ($counters.ContainsKey($UsableCounterName) -eq $TRUE) {
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$counters[$UsableCounterName] += $Category.ReadCategory()[$counter][$instance];
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} else {
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$counters.Add($UsableCounterName, @( $Category.ReadCategory()[$counter][$instance] ));
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}
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} else {
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# For counters with no instances, we still require to return a re-build Performance Counter
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# output, to make later usage in our modules very easy. This can look like this:
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# \System\system up time
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[string]$UsableCounterName = [string]::Format('\{0}\{1}', $CounterCategory, $counter);
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$counters.Add($UsableCounterName, $null);
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}
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}
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};
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} catch {
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# In case we run into an error, return an error message
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$counters.Add('error', $_.Exception.Message);
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}
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return $counters;
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}
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