icinga-powershell-framework/lib/core/tools/Get-IcingaServices.psm1

function Get-IcingaServices()
{
    param (
        [array]$Service,
        [array]$Exclude = @()
    );

    $ServiceInformation = Get-Service -Name $Service -ErrorAction SilentlyContinue;
    $ServiceWmiInfo     = $null;

    if ($Service.Count -eq 0) {
        $ServiceWmiInfo = Get-WmiObject Win32_Service;
    } else {
        $ServiceWmiInfo = Get-WmiObject -Class Win32_Service | Where-Object { $Service -Contains $_.Name } | Select-Object StartName, Name;
    }

    if ($null -eq $ServiceInformation) {
        return $null;
    }

    [hashtable]$ServiceData = @{};

    foreach ($service in $ServiceInformation) {
    
        [array]$DependentServices = $null;
        [array]$DependingServices = $null;
        [string]$ServiceUser      = '';

        if ($Exclude -contains $service.ServiceName) {
            continue;
        }

        foreach ($wmiService in $ServiceWmiInfo) {
            if ($wmiService.Name -eq $service.ServiceName) {
                $ServiceUser = $wmiService.StartName;
                break;
            }
        }

        #Dependent / Child
        foreach ($dependency in $service.DependentServices) {
            if ($null -eq $DependentServices) {
                $DependentServices = @();
            }
            $DependentServices += $dependency.Name;
        }
        
        #Depends / Parent
        foreach ($dependency in $service.ServicesDependedOn) {
            if ($null -eq $DependingServices) {
                $DependingServices = @();
            }
            $DependingServices += $dependency.Name;
        }

        $ServiceData.Add(
            $service.Name, @{
                'metadata' = @{
                    'DisplayName' = $service.DisplayName;
                    'ServiceName' = $service.ServiceName;
                    'Site' = $service.Site;
                    'Container' = $service.Container;
                    'ServiceHandle' = $service.ServiceHandle;
                    'Dependent' = $DependentServices;
                    'Depends' = $DependingServices;
                };
                'configuration' = @{
                    'CanPauseAndContinue' = $service.CanPauseAndContinue;
                    'CanShutdown' = $service.CanShutdown;
                    'CanStop' = $service.CanStop;
                    'Status' = @{
                        'raw' = [int]$service.Status;
                        'value' = $service.Status;
                    };
                    'ServiceType' = @{
                        'raw' = [int]$service.ServiceType;
                        'value' = $service.ServiceType;
                    };
                    'ServiceHandle' = $service.ServiceHandle;
                    'StartType' = @{
                        'raw' = [int]$service.StartType;
                        'value' = $service.StartType;
                    };
                    'ServiceUser' = $ServiceUser;
                    'ExitCode' = [int]$service.ExitCode;
                }
            }
        );
    }
    return $ServiceData;
}