import ntplib
import time
from datetime import datetime
from .config import NTP_DOMAIN_URL
def get_current_time(ntp_server=None):
"""从NTP服务器获取当前时间"""
if ntp_server is None or ntp_server.strip() == "":
ntp_server = NTP_DOMAIN_URL
# 处理空串和None的情况
if not ntp_server:
raise ValueError("NTP server address is not configured. Please set the NTP_DOMAIN_URL environment variable or provide ntp_url in the request header.")
# 去除首尾空格
ntp_server = ntp_server.strip()
try:
# 创建NTP客户端
ntp_client = ntplib.NTPClient()
# 从NTP服务器获取时间
response = ntp_client.request(ntp_server, version=3, timeout=5)
# 获取NTP时间戳
ntp_time = response.tx_time
# 转换为本地时间
local_time = datetime.fromtimestamp(ntp_time)
# 获取本地时间作为对比
local_system_time = datetime.now()
return {
"ntp_server": ntp_server,
"ntp_timestamp": ntp_time,
"ntp_time": local_time.isoformat(),
"local_system_time": local_system_time.isoformat(),
"time_offset": ntp_time - time.time(),
"response_delay": response.delay
}
except ntplib.NTPException as e:
raise Exception(f"NTP Request Failed (NTPException): {str(e)}")
except Exception as e:
raise Exception(f"NTP Request Failed (Other Error): {str(e)}")
