Preview: Runner-Schutzschalter 503 als Server ausgelastet durchreichen

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server/routes/admin/preview.js

@@ -13,6 +13,7 @@ import { getRepoInfo } from '../../services/giteaAdmin.js'
 const router = Router()
 router.use(requireAppwriteStaff)
 
+const BUSY = 'Server ausgelastet, versuche es gleich noch mal'
 const MODES = ['auto', 'build', 'dev', 'off']
 const SHA_RE = /^[0-9a-f]{7,40}$/
 
@@ -74,13 +75,17 @@ async function triggerRebuild(doc) {
     branch,
     subdomain: doc.subdomain,
   }
-  return runDeploy(repo, branch, cfg, { project: doc })
+  const result = await runDeploy(repo, branch, cfg, { project: doc })
+  // runDeploy meldet Runner-Fehler im Ergebnis; Schutzschalter (503) an WOMS durchreichen
+  if (result?.error && /Server ausgelastet/.test(result.error)) throw fail(503, BUSY)
+  return result
 }
 
 const wrap = (fn) => async (req, res) => {
   try {
     await fn(req, res)
   } catch (err) {
+    if (!err.expected && err.status === 503) return res.status(503).json({ error: BUSY })
     const status = err.expected ? err.status : 500
     if (!err.expected) console.error('[admin/preview]', err.message)
     res.status(status).json({ error: !err.expected ? 'Preview-Aktion fehlgeschlagen' : err.message })