Get names of machines in role

GetMachineInRolesNames.ps1

##CONFIG##
$Role = "" #Role you want to look for
$OctopusAPIkey = "" #API Key for the API calls to get the machine names. Recommended to use a Sensitive Project variable for this.

##PROCESS##
$OctopusURL = $OctopusParameters['Octopus.Web.BaseUrl']
$header = @{ "X-Octopus-ApiKey" = $octopusAPIKey }

$MachineIDs = ($OctopusParameters["Octopus.Environment.MachinesInRole[$Role]"]).Split(',')

$machineNamesArray = @()

foreach ($Id in $MachineIDs){
    $MachineNamesArray += ((Invoke-WebRequest $OctopusURL/api/machines/$id -Headers $header -Method Get).content | ConvertFrom-Json | select -ExpandProperty Name)
}

$MachineNamesString = $machineNamesArray -join ","

Set-OctopusVariable -name "MachineNames" -value $MachineNamesString