2025.08.19 - Improved thread handling

main.py

@@ -4,6 +4,7 @@ from libraries.wrappers import earn_okx
 from libraries.wrappers import earn_gateio
 from libraries.earner import earner
 from libraries.colors import colors
+from concurrent.futures import ThreadPoolExecutor, as_completed
 from threading import Thread
 from flask import Flask, jsonify, request
 from waitress import serve
@@ -11,6 +12,8 @@ import time
 import datetime
 import json
 import sqlite3
+import signal
+import os
 
 
 def load_keys_from_db(file_name: str) -> list:
@@ -61,16 +64,23 @@ def seconds_to_time(total_seconds: float) -> str:
 
 
 def main():
+    executor = ThreadPoolExecutor(max_workers=len(earners))
     while True:
         threads = []
         
         #Run earners
-        for item in earners:
-            threads.append(Thread(target=item.run))
-        for item in threads:
-            item.start()
-        for item in threads:
-            item.join()
+        futures = [executor.submit(e.run) for e in earners]
+        for future in as_completed(futures):
+            try:
+                future.result()
+            except Exception as e:
+                print(f"Error in thread - {e}")
+        # for item in earners:
+        #     threads.append(Thread(target=item.run))
+        # for item in threads:
+        #     item.start()
+        # for item in threads:
+        #     item.join()
         
         #Print status
         subscriptions = []
@@ -485,9 +495,22 @@ def run_API(port):
     #earn_api.run(host="0.0.0.0", port=port)
 
 
+executor = None
+#Shutdown handler
+def shutdown_handler(signum, _):
+    print(f"Received signal {signum}, shutting down as gracefully as possible...")
+    if executor:
+        executor.shutdown(wait=True, timeout=5)
+    os._exit(0)
+
+# Register signals for shutdown handler
+signal.signal(signal.SIGINT, shutdown_handler)
+signal.signal(signal.SIGTERM, shutdown_handler)
+
+
 if __name__=="__main__":
 
-    version = "2025.03.16"
+    version = "2025.08.19"
     start_time = time.time()
     
     with open("config.json") as f:
@@ -506,11 +529,16 @@ if __name__=="__main__":
     valid_keys = load_keys_from_db("keys/api_credentials.db")
 
     #Threads to run: main loop and flask api
-    main_threads = [Thread(target=main),Thread(target=run_API, args=(config["api_port"],))]
+    api_thread = Thread(target=run_API, args=(config["api_port"],), daemon=True)
 
     #Iterate indefinitely:
-    for m in main_threads:
-        m.start()
+    api_thread.start()
+        
+    try:
+        main()
+    except KeyboardInterrupt:
+        api_thread.join()
+        shutdown_handler(signal.SIGINT, None)