feat(bot): ✨ Terminate all processes after p.shutdown.

run.py

@@ -1,12 +1,15 @@
+from multiprocessing import managers
+
 from datetime import datetime, timezone
 
 
-def shard(shard_id: int, shard_count: int) -> None:
+def shard(shard_id: int, shard_count: int, shutdown: managers.ValueProxy[bool]) -> None:
     """Starts a new shard.
 
     Args:
         shard_id (int): The shard's ID.
         shard_count (int): The total amount of shards.
+        shutdown (ValueProxy[bool]): The flag for the main process to shut down all shards.
     """
 
     from payphone.bot import bot
@@ -14,6 +17,7 @@ def shard(shard_id: int, shard_count: int) -> None:
 
     bot.shard_ids = [shard_id]
     bot.shard_count = shard_count
+    bot.shutdown = shutdown
 
     try:
         import uvloop  # pylint: disable=import-error
@@ -46,6 +50,10 @@ def flush_process():
         asyncio.run(loop())
 
 
+class ShutdownException(Exception):
+    """Raised when a shard has triggered the shutdown of all shards."""
+
+
 if __name__ == "__main__":
     import multiprocessing as mp
 
@@ -87,10 +95,14 @@ if __name__ == "__main__":
 
     shard_count = info["shards"]
 
+    manager = mp.Manager()
+    shutdown = manager.Value("b", False)
+
     print(f"Starting {shard_count} shard{"s" if shard_count != 1 else ""}.")
 
     ps: list[mp.Process] = [
-        mp.Process(target=shard, args=(i, shard_count)) for i in range(shard_count)
+        mp.Process(target=shard, args=(i, shard_count, shutdown))
+        for i in range(shard_count)
     ]
     flushing_p = mp.Process(target=flush_process)
 
@@ -101,12 +113,12 @@ if __name__ == "__main__":
             f"Shard {i}'s process started."
             + (
                 " Waiting 5 seconds start initialize next shard..."
-                if len(ps) - 1 < i
+                if i != len(ps) - 1
                 else " All shards were started."
             )
         )
 
-        if i + 1 != len(ps):
+        if i != len(ps) - 1:
             time.sleep(5)
 
     print("Starting messages flushing process...")
@@ -117,11 +129,16 @@ if __name__ == "__main__":
 
     try:
         while True:
+            if shutdown.value:
+                raise ShutdownException()
+
             for i in range(shard_count):
                 if not ps[i].is_alive():
                     print(f"Shard {i}'s process exited. Restarting the shard...")
 
-                    ps[i] = mp.Process(target=shard, args=(i, shard_count))
+                    ps[i] = mp.Process(
+                        target=shard, args=(i, shard_count), name=f"payphone-shard-{i}"
+                    )
                     ps[i].start()
 
                     print(
@@ -132,7 +149,7 @@ if __name__ == "__main__":
             if not flushing_p.is_alive():
                 print("Messages flushing process was stopped. Restarting it...")
 
-                flushing_p = mp.Process(target=flush_process)
+                flushing_p = mp.Process(target=flush_process, name="payphone-flushing")
                 flushing_p.start()
 
                 print("Messages flushing process started.")
@@ -140,7 +157,13 @@ if __name__ == "__main__":
             time.sleep(5)
 
     except KeyboardInterrupt:
-        print(f"Stopping {shard_count} shards...")
+        print("Ctrl-C was pressed.")
+
+    except ShutdownException:
+        print("A shard shut down the bot.")
+
+    finally:
+        print(f"Terminating {shard_count} shards...")
 
         for i, p in enumerate(ps):
             p.terminate()