lower terraria idle draw further

2026-06-28 01:58:34 +00:00 · 2025-04-11 03:23:52 -07:00
parent 292812f3f5
commit 12039fb862
4 changed files with 93 additions and 19 deletions
@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+
+import logging
+import os
+import signal
+import socket
+import subprocess
+import time
+
+class Runner:
+    def __init__(self):
+        self.server = None
+        signal.signal(signal.SIGINT, self.terminate)
+        signal.signal(signal.SIGTERM, self.terminate)
+
+    def run(self):
+        while True:
+            # low-power idle waiting for players
+            logging.info("waiting for connection attempt...")
+            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            s.bind(("0.0.0.0", 7777))
+            s.listen()
+            (c, addr) = s.accept()
+            c.close()
+            s.close()
+            logging.info(f"attempted connection from {addr}, starting server...")
+
+            # start server
+            with open("/home/me/password.txt", "r") as f:
+                password = f.read()
+            self.server = subprocess.Popen([
+                "/bin/bash",
+                "/home/me/server/start-tModLoaderServer.sh", 
+                "-nosteam",
+                "-config", "/home/me/config.txt",
+                "-pass", f"{password}",
+            ], stdin=subprocess.PIPE, start_new_session=True)
+            while not self.started():
+                time.sleep(1.0)
+
+            # wait until no connections for timeout
+            logging.info("server started, waiting until idle for 30s...")
+            idle_start = time.time()
+            while (time.time() - idle_start) < 30.0:
+                time.sleep(1.0)
+                if self.playing():
+                    idle_start = time.time()
+
+            # stop server
+            self.exit()
+            while self.started():
+                time.sleep(1.0)
+
+    def started(self):
+        return b"LISTEN" in subprocess.check_output([
+            "ss", "-tln", "( sport = :7777 )"])
+
+    def playing(self):
+        return b"ESTAB" in subprocess.check_output([
+            "ss", "-tn", "( sport = :7777 )"])
+
+    def exit(self):
+        if self.server:
+            logging.info("shutting down server...")
+            self.server.stdin.write(b"exit\n")
+            self.server.stdin.flush()
+            timeout, start = True, time.time()
+            while (time.time() - start) < 8.0:
+                if self.server.poll() is not None:
+                    timeout = False
+                    break
+                time.sleep(0.25)
+            if timeout:
+                logging.error("forcefully shutting down server...")
+                os.killpg(os.getpgid(self.server.pid), signal.SIGKILL)
+        self.server = None
+
+    def terminate(self, signum, frame):
+        self.exit()
+        exit(0)
+
+if __name__ == "__main__":
+    logging.basicConfig(
+        format="[%(asctime)s] [%(levelname)s] %(message)s",
+        level=logging.INFO,
+        datefmt="%Y-%m-%d %H:%M:%S",
+    )
+    runner = Runner()
+    runner.run()