Add structured logging to src/assets middleware (#60981)

Author: Ebonsignori

src/assets/middleware/dynamic-assets.ts

@@ -6,6 +6,9 @@ import sharp from 'sharp'
 import type { ExtendedRequest } from '@/types'
 import { assetCacheControl, defaultCacheControl } from '@/frame/middleware/cache-control'
 import { setFastlySurrogateKey, SURROGATE_ENUMS } from '@/frame/middleware/set-fastly-surrogate-key'
+import { createLogger } from '@/observability/logger'
+
+const logger = createLogger(import.meta.url)
 
 /**
  * This is the indicator that is a virtual part of the URL.
@@ -83,6 +86,7 @@ export default async function dynamicAssets(
   if (req.path.endsWith('.webp')) {
     const { url, maxWidth, error } = deconstructImageURL(req.path)
     if (error) {
+      logger.warn('Invalid dynamic asset URL', { path: req.path, error })
       return res.status(400).type('text/plain').send(error.toString())
     }
     try {
@@ -149,6 +153,7 @@ export default async function dynamicAssets(
         'code' in catchError &&
         (catchError as NodeJS.ErrnoException).code !== 'ENOENT'
       ) {
+        logger.error('Failed to process dynamic asset', { path: req.path, error: catchError })
         throw catchError
       }
     }