Make engine updating multithreaded

src/engines/engine_manager.py

@@ -1,6 +1,7 @@
 import logging
 import os
 import shutil
+import threading
 
 from src.engines.blender.blender_downloader import BlenderDownloader
 from src.engines.blender.blender_engine import Blender
@@ -147,8 +148,7 @@ class EngineManager:
 
     @classmethod
     def update_all_engines(cls):
-        logger.info(f"Checking for updates for render engines...")
-        for engine, engine_downloader in cls.downloader_classes.items():
+        def engine_update_task(engine, engine_downloader):
             logger.debug(f"Checking for updates to {engine}")
             latest_version = engine_downloader.find_most_recent_version()
             if latest_version:
@@ -159,6 +159,15 @@ class EngineManager:
             else:
                 logger.warning(f"Unable to get latest version for {engine}")
 
+        logger.info(f"Checking for updates for render engines...")
+        threads = []
+        for engine, engine_downloader in cls.downloader_classes.items():
+            thread = threading.Thread(target=engine_update_task, args=(engine, engine_downloader))
+            threads.append(thread)
+            thread.start()
+
+        for thread in threads:  # wait to finish
+            thread.join()
 
 if __name__ == '__main__':
     logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')