fix: ci port conflict (#4840)

tests/e2e/test_EB_VL_Lite_serving.py

@@ -17,7 +17,6 @@ import os
 import re
 import shutil
 import signal
-import socket
 import subprocess
 import sys
 import time
@@ -25,60 +24,18 @@ import time
 import openai
 import pytest
 import requests
-
-# Read ports from environment variables; use default values if not set
-FD_API_PORT = int(os.getenv("FD_API_PORT", 8188))
-FD_ENGINE_QUEUE_PORT = int(os.getenv("FD_ENGINE_QUEUE_PORT", 8133))
-FD_METRICS_PORT = int(os.getenv("FD_METRICS_PORT", 8233))
-FD_CACHE_QUEUE_PORT = int(os.getenv("FD_CACHE_QUEUE_PORT", 8333))
-
-# List of ports to clean before and after tests
-PORTS_TO_CLEAN = [FD_API_PORT, FD_ENGINE_QUEUE_PORT, FD_METRICS_PORT, FD_CACHE_QUEUE_PORT]
+from utils.serving_utils import (
+    FD_API_PORT,
+    FD_CACHE_QUEUE_PORT,
+    FD_ENGINE_QUEUE_PORT,
+    FD_METRICS_PORT,
+    clean_ports,
+    is_port_open,
+)
 
 os.environ["FD_USE_MACHETE"] = "0"
 
 
-def is_port_open(host: str, port: int, timeout=1.0):
-    """
-    Check if a TCP port is open on the given host.
-    Returns True if connection succeeds, False otherwise.
-    """
-    try:
-        with socket.create_connection((host, port), timeout):
-            return True
-    except Exception:
-        return False
-
-
-def kill_process_on_port(port: int):
-    """
-    Kill processes that are listening on the given port.
-    Uses `lsof` to find process ids and sends SIGKILL.
-    """
-    try:
-        output = subprocess.check_output(f"lsof -i:{port} -t", shell=True).decode().strip()
-        current_pid = os.getpid()
-        parent_pid = os.getppid()
-        for pid in output.splitlines():
-            pid = int(pid)
-            if pid in (current_pid, parent_pid):
-                print(f"Skip killing current process (pid={pid}) on port {port}")
-                continue
-            os.kill(pid, signal.SIGKILL)
-            print(f"Killed process on port {port}, pid={pid}")
-    except subprocess.CalledProcessError:
-        pass
-
-
-def clean_ports():
-    """
-    Kill all processes occupying the ports listed in PORTS_TO_CLEAN.
-    """
-    for port in PORTS_TO_CLEAN:
-        kill_process_on_port(port)
-    time.sleep(2)
-
-
 @pytest.fixture(scope="session", autouse=True)
 def setup_and_run_server():
     """