fix(preview service): check bull queue is ready before processing

packages/preview-service/src/main.ts

@@ -21,6 +21,7 @@ import { logger } from '@/logging.js'
 import { jobProcessor } from '@/jobProcessor.js'
 import { AppState } from '@/const.js'
 import { initMetrics, initPrometheusRegistry } from '@/metrics.js'
+import { ensureError } from '@speckle/shared'
 
 const app = express()
 const host = HOST
@@ -66,7 +67,7 @@ const opts = {
     }
   }
 }
-const jobQueue = new Bull(JobQueueName, opts)
+let jobQueue: Bull.Queue | undefined = undefined
 
 // store this callback, so on shutdown we can error the job
 let currentJob: { logger: Logger; done: Bull.DoneCallback } | undefined = undefined
@@ -112,6 +113,16 @@ const server = app.listen(port, host, async () => {
       handleSIGTERM: false
     })
   }
+
+  try {
+    const newQueue = new Bull(JobQueueName, opts)
+    jobQueue = await newQueue.isReady()
+  } catch (e) {
+    const err = ensureError(e, 'Unknown error creating job queue')
+    logger.error({ err }, 'Error creating job queue')
+    throw err
+  }
+
   logger.debug(`Starting processing of "${JobQueueName}" message queue`)
 
   // nothing after this line is getting called, this blocks
@@ -185,10 +196,12 @@ const beforeShutdown = async () => {
   logger.info('🛑 Beginning shut down, pausing all jobs')
   appState = AppState.SHUTTINGDOWN
   // stop accepting new jobs and kill any running jobs
-  await jobQueue.pause(
-    true, // just pausing this local worker of the queue
-    true // do not wait for active jobs to finish
-  )
+  if (jobQueue) {
+    await jobQueue.pause(
+      true, // just pausing this local worker of the queue
+      true // do not wait for active jobs to finish
+    )
+  }
 
   if (currentJob) {
     currentJob.logger.warn('Cancelling job due to preview-service shutdown')
@@ -217,6 +230,10 @@ createTerminus(server, {
         return Promise.reject(new Error('Preview service is shutting down'))
       }
 
+      if (!jobQueue) {
+        return Promise.reject(new Error('Job queue is not initialized'))
+      }
+
       const isReady = await jobQueue.isReady()
       if (!isReady)
         return Promise.reject(