Best way to terminate a PowerShell function based on parameters - powershell

Question

I have a few functions that get called either from Jenkins as part of a pipeline, they also get called from a pester test or lastly they can get called from the powershell console. The issue I have really stems from Jenkins not seeming to handle write-output in the way I think it should.
So what I am doing is creating a Boolean param that will allow my to choose if I terminate my function with a exit code or a return message. The exit code will be used by my pipeline logic and the return message for the rest ?
Is there a alternate approach I should be using this seems to be a bit of a hack.
function Get-ServerPowerState
{
[CmdletBinding()]
param
(
[string[]]$ilo_ip,
[ValidateSet('ON', 'OFF')]
[string]$Status,
[boolean]$fail
)
BEGIN
{
$here = Split-Path -Parent $Script:MyInvocation.MyCommand.Path
$Credentials = IMPORT-CLIXML "$($here)\Lib\iLOCred.xml"
}
PROCESS
{
foreach ($ip in $ilo_ip)
{
New-LogEntry -Message ("Getting current powerstate " + $ip)
If (Test-Connection -ComputerName $ip.ToString() -Count 1 -Quiet)
{
$hostPower = Get-HPiLOhostpower -Server $ip -Credential
$Credentials -DisableCertificateAuthentication
}
}
}
END
{
If($fail){
New-LogEntry -Message "Script been set to fail with exit code" -Log Verbose
New-LogEntry -Message "The host is powered - $($HostPower.Host_Power)" -Log Verbose
If($hostPower.HOST_POWER -match $Status)
{
Exit 0
}
else {
Exit 1
}
}
else {
New-LogEntry -Message "Script been set to NOT fail with exit code" -Log Verbose
New-LogEntry -Message "The host is powered - $($HostPower.Host_Power)" -Log Verbose
If($hostPower.HOST_POWER -match $Status)
{
return 0
}
else {
return 1
}
}
}
}

Answer 1

Like this
function Get-Output {
param ([switch]$asint)
if ($asint) {
return 1
}
else {
write-output 'one'
}
}
Get-Output
Get-Output -asint
If you intend to use the output in the pipeline then use Write-Output. If you intend to only send it to the host process then use Write-Host. I typically use the return keyword if I want to assign a return value to a variable.
[int]$result = Get-Output -asint