check_running_services.ps1

## Include on the array the services (service name and port on sequence) that you want to check.
$externalServicesNamesAndPorts = @('MySQL', 3306, 'MongoDB', 27017, 'Elastic Search', 9200, 'Apache Zookeeper', 2181, 'Kafka', 9092)

function Write-ColorOutput($ForegroundColor)
{
    # save the current color
    $fc = $host.UI.RawUI.ForegroundColor

    # set the new color
    $host.UI.RawUI.ForegroundColor = $ForegroundColor

    # output
    if ($args) {
        Write-Output $args
    }
    else {
        $input | Write-Output
    }

    # restore the original color
    $host.UI.RawUI.ForegroundColor = $fc
}


for ($i = 0; $i -lt $externalServicesNamesAndPorts.count; $i += 2) {
    $serviceName = $externalServicesNamesAndPorts[$i]
    $servicePort = $externalServicesNamesAndPorts[$i + 1]

    $netStatCmd = "netstat -na | findstr /r ':"+$servicePort+".*LISTENING'"
    
    if (Invoke-Expression $netStatCmd) {
        Write-ColorOutput green ($serviceName + " is running on port:"+$servicePort)
    } else {
        Write-ColorOutput red ($serviceName + " is NOT running on port:"+$servicePort)
    }
}