chore: Ensure Graylog session is set before making requests, and added better error handling

Functions/Public/Invoke-GraylogRequest.ps1

@@ -49,6 +49,7 @@ function Invoke-GraylogRequest {
 		[string]
 		$ContentType = "application/json"
 	)
+	if (-NOT (Test-GraylogSession -SkipSessionCheck)) { return } # Ensure that the Secrets are set
 	$Session = Get-Secret Graylog_Session -Vault Graylog -AsPlainText -ErrorAction Stop
 	$Request = @{
 		Method = $Method
@@ -57,5 +58,6 @@ function Invoke-GraylogRequest {
 		ContentType = $ContentType
 	}
 	if ($Body) { $Request.Body = $Body }
-	Invoke-RestMethod @Request
+	try { Invoke-RestMethod @Request }
+	catch { throw $_.Exception.Message }
 }