From 53331d74f10896dfc07dab2171ab0be7fad04272 Mon Sep 17 00:00:00 2001
From: Ralf Aron <ralf.aron@iosb-ina.fraunhofer.de>
Date: Sun, 3 Mar 2024 17:16:58 +0100
Subject: [PATCH] fix: get worker on demand

---
 projects/aas-server/src/app/aas-provider/parallel.ts | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/projects/aas-server/src/app/aas-provider/parallel.ts b/projects/aas-server/src/app/aas-provider/parallel.ts
index bb477a06..87592b20 100644
--- a/projects/aas-server/src/app/aas-provider/parallel.ts
+++ b/projects/aas-server/src/app/aas-provider/parallel.ts
@@ -83,11 +83,7 @@ export class Parallel extends EventEmitter {
     ) {
         super();
         this.script = path.resolve(this.variable.CONTENT_ROOT, 'aas-scan-worker.js');
-        if (fs.existsSync(this.script)) {
-            for (let i = 0; i < this.variable.MAX_WORKERS; i++) {
-                this.pool.set(new Worker(this.script, { env: SHARE_ENV }), true);
-            }
-        } else {
+        if (!fs.existsSync(this.script)) {
             this.logger.error(`${this.script} does not exist.`);
         }
     }
@@ -118,6 +114,12 @@ export class Parallel extends EventEmitter {
             }
         }
 
+        if (this.pool.size < this.variable.MAX_WORKERS) {
+            const worker = new Worker(this.script, { env: SHARE_ENV });
+            this.pool.set(worker, true);
+            return worker;
+        }
+
         return undefined;
     }