Added handling of 429 errors

Author: alan-null

Slack.Backup/Private/api/Invoke-SlackAPI.ps1

@@ -31,7 +31,17 @@ function Invoke-SlackAPI {
             $uri = $uriRequest.ToString()
         }
 
-        $response = Invoke-WebRequest -Method Get -Uri $uri -Headers $headers
+        try {
+            $response = Invoke-WebRequest -Method Get -Uri $uri -Headers $headers
+        }
+        catch [Microsoft.PowerShell.Commands.HttpResponseException] {
+            if ($_.Exception.Response.StatusCode -eq 429) {
+                [int] $delay = [int](($_.Exception.Response.Headers | Where-Object Key -eq 'Retry-After').Value[0])
+                Write-Host -Message "Retry caught, delaying $delay s"
+                Start-Sleep -Seconds $delay
+                return Invoke-SlackAPI $Method $Token $Parameters
+            }
+        }
         $response = $response.Content | ConvertFrom-Json
         if ($response.ok) {
             $response

Slack.Backup/Slack.Backup.psd1

@@ -1,7 +1,7 @@
 
 @{
     RootModule        = 'Slack.Backup.psm1'
-    ModuleVersion     = '1.1.1'
+    ModuleVersion     = '1.1.3'
     GUID              = '5fca212b-de20-40cb-ba38-e6114263bfaa'
     Author            = 'Alan Plocieniak'
     CompanyName       = 'Alan Plocieniak'