Introduce worker threads to process remote images

1 files changed, 18 insertions, 0 deletions

diff --git a/server/lib/worker/parent-process.ts b/server/lib/worker/parent-process.ts
new file mode 100644
index 000000000..18dabd97f
--- /dev/null
+++ b/server/lib/worker/parent-process.ts
@@ -0,0 +1,18 @@
+import { join } from 'path'
+import Piscina from 'piscina'
+import { WORKER_THREADS } from '@server/initializers/constants'
+import { downloadImage } from './workers/image-downloader'
+
+const downloadImagerWorker = new Piscina({
+  filename: join(__dirname, 'workers', 'image-downloader.js'),
+  concurrentTasksPerWorker: WORKER_THREADS.DOWNLOAD_IMAGE.CONCURRENCY,
+  maxThreads: WORKER_THREADS.DOWNLOAD_IMAGE.MAX_THREADS
+})
+
+function downloadImageFromWorker (options: Parameters<typeof downloadImage>[0]): Promise<ReturnType<typeof downloadImage>> {
+  return downloadImagerWorker.run(options)
+}
+
+export {
+  downloadImageFromWorker
+}