diff --git a/license.py b/license.py
new file mode 100644
index 0000000..d96a70e
--- /dev/null
+++ b/license.py
@@ -0,0 +1,267 @@
+#!/usr/bin/python3
+import json
+import queue
+import re
+import sys
+import socket
+import asyncio
+import threading
+import time
+from typing import Dict, List
+from datetime import datetime
+from utils import *
+import logger
+log = logger.get_logger()
+
+def _get_ip_address(domain):
+    try:
+        ip_address = socket.gethostbyname(domain)
+        # log.debug(f"get_ip_address {domain} {ip_address}")
+        return ip_address
+    except socket.gaierror as e:
+        # print(f"Error retrieving IP address: {e}")
+        return None
+
+def _get_valid_licenses():
+    lic_id = 0
+    while True:
+        lic_id += 1
+        domain = f"szmaslic{lic_id:02d}"
+        if _get_ip_address(domain) is None:
+            break
+        yield "27003@" + domain
+
+class UsedInfo:
+    def __init__(self):
+        self.user = ''
+        self.host = ''
+        self.lic = ''
+        self.start_time:datetime = None
+    def __str__(self):
+        time = datetime.now() - self.start_time
+        login_time = (time.days * 24 + time.seconds / 3600.0)
+        obj = {
+            "user":self.user,
+            "host":self.host,
+            'lic':self.lic,
+            'login':f'{login_time:.2f}h'
+        }
+        return str(obj)
+    def __repr__(self):
+        return self.__str__()
+
+class LicenseInfo:
+    def __init__(self, name='', total=0, used=0):
+        self.name = name
+        self.total = total
+        self.used = used
+        self.used_info:List[UsedInfo] = []
+
+    def available(self):
+        return self.total - self.used
+    
+    def __str__(self):
+        obj = {
+            "name":self.name,
+            "total":self.total,
+            "used":self.used,
+            "used_info":self.used_info
+        }
+        return str(obj)
+    def __repr__(self):
+        return self.__str__()
+    
+
+class LicenseManager:
+    def __init__(self):
+        self.wait_queue = queue.Queue()
+        self.ack_queue = queue.Queue()
+        self.licenses_stat = LicenseStatistic()
+        self.licenses:Dict[str,LicenseInfo] = {}
+        #启动定时获取
+        self.licenses_stat.lic_info_updater()
+    
+    def lic_info_updater(self):
+        self.update()
+        if self.wait_queue.qsize() > 0:
+            for lic, available_cnt in self.licenses_stat.available():
+                for i in range(available_cnt):
+                    req = self.wait_queue.get()
+                    if req == None:
+                        return
+                    req["lic"] = lic
+                    self.ack_queue.put(req)
+        threading.Timer(10, self.lic_info_updater).start() #每间隔一段时间更新一次lic的使用情况
+
+    def _in_wait_queue(self, user):
+        return any(user == _.user for _ in list(self.wait_queue))
+
+    def request(self, user:str, host:str):
+        #如果已经是在线的状态就不允许申请
+        if any(user == _.user for _ in self.licenses_stat.online_users()):
+            log.warning(f"{user} is online, please try again later")
+            return False
+        #如果是已经在队列中则返回等待
+        if self._in_wait_queue(user):
+            return None
+        
+        data = {
+            "user":user,
+            "host":host,
+            "start_time":time.now()
+        }
+        self.wait_queue.put(data)
+        return False
+    
+    def cancel(self):
+        pass
+    
+    def release(self):
+        pass
+    
+    def get_wait_queue(self):
+        return [_ for _ in self.wait_queue.queue]
+
+class LicenseStatistic:
+    def __init__(self):
+        self.licenses:Dict[str,LicenseInfo] = {}
+
+    def update(self):
+        # 更新license信息，使用异步获取
+        tasks = []
+        for lic in _get_valid_licenses():
+            log.trace(f'find valid lic: {lic}')
+            tasks.append(get_license_used_info(lic))
+        loop = asyncio.get_event_loop()
+        infos = loop.run_until_complete(asyncio.gather(*tasks, return_exceptions=True))
+        for info in infos:
+            if info is not None:
+                self.licenses[info.name] = info
+        if not self.licenses:
+            log.warning("not vcast lic found")
+    def get_lic_list(self):
+        # 获取所有的license名称
+        return self.licenses.keys()
+
+    def available(self):
+        # 获取所有的可用数量
+        for _,lic in self.licenses.items():
+            value = lic.available()
+            if value > 0:
+                yield (lic.name, value) #lic的name和个数
+    
+    def online_users(self):
+        # 获取在线用户
+        for used_info in self.used():
+            yield used_info.user #返回的是user name
+
+    def used(self):
+        # 获取所有的已使用信息
+        for _,info in self.licenses.items():
+            for used in info.used_info:
+                yield used #返回的是UsedInfo对象
+    
+    def sorted(self):
+        info = {}
+        for used_info in self.used():
+            time = datetime.now() - used_info.start_time
+            login_time = (time.days * 24 + time.seconds / 3600.0)
+            info[used_info.user] = login_time
+        sorted_info = dict(sorted(info.items(), key=lambda item: item[1], reverse=True))
+        return sorted_info #返回的是字典，key为username value为登录时间
+
+    def __str__(self):
+        string = str(self.licenses).replace("'", '"')
+        log.info(string)
+        obj = json.loads(string)
+        string = json.dumps(obj, indent = 4)
+        return string
+    def __repr__(self):
+        return self.__str__()
+
+"""
+  {"27003@szmaslic03": {"name": "27003@szmaslic03", "total": 2, "used": 1, "used_info": "[{"name": "haoxiang.ran", "host": "szl3bc12808", "lic": "szmaslic03", "login": "0.41"}]"}, "27003@szmaslic04": {"name": "27003@szmaslic04", "total": 2, "used": 1, "used_info": "[{"name": "macro.yang", "host": "szl3bc12804", "lic": "szmaslic04", "login": "52.28"}]"}, "27003@szmaslic06": {"name": "27003@szmaslic06", "total": 2, "used": 2, "used_info": "[{"name": "zhenhao.he", "host": "szl3bc12804", "lic": "szmaslic06", "login": "0.20"}, {"name": "phillip.chan", "host": "szl3bc12810", "lic": "szmaslic06", "login": "0.16"}]"}, "27003@szmaslic07": {"name": "27003@szmaslic07", "total": 2, "used": 1, "used_info": "[{"name": "zhiyi.li", "host": "szl3bc12806", "lic": "szmaslic07", "login": "2.96"}]"}, "27003@szmaslic08": {"name": "27003@szmaslic08", "total": 2, "used": 2, "used_info": "[{"name": "soo.liu", "host": "szl3bc12809", "lic": "szmaslic08", "login": "6.55"}, {"name": "haichao.ou", "host": "szl3bc12806", "lic": "szmaslic08", "login": "5.93"}]"}, "27003@szmaslic09": {"name": "27003@szmaslic09", "total": 2, "used": 2, "used_info": "[{"name": "louie.liang", "host": "szl3bc12810", "lic": "szmaslic09", "login": "8.31"}, {"name": "zabbix", "host": "szl3bc06409", "lic": "szmaslic09", "login": "0.90"}]"}, "27003@szmaslic10": {"name": "27003@szmaslic10", "total": 2, "used": 2, "used_info": "[{"name": "harvey.li", "host": "szl3bc12810", "lic": "szmaslic10", "login": "57.38"}, {"name": "kw.hu", "host": "szl3bc12809", "lic": "szmaslic10", "login": "1.41"}]"}}
+"""
+async def get_license_used_info(lic):
+    server_used_info = f"timeout 1 /tools/software/vcast/flexlm/lmutil lmstat -a -c {lic} -a"
+    ret,out,err = shell(server_used_info, checkret=False)
+    # log.info(f"get_license_used_info {lic} {out} {ret} {err}")
+    if ret != 0:
+        return None
+    """ data like:
+    Users of VCAST_C_ENT_0800:  (Total of 2 licenses issued;  Total of 2 licenses in use)
+
+    "VCAST_C_ENT_0800" v23, vendor: vector, expiry: permanent(no expiration date)
+    vendor_string: CUST:64925:
+    floating license
+
+        zhenhao.he szl3bc12804 /dev/tty (v23) (szmaslic06/27003 337), start Thu 1/2 8:52
+        phillip.chan szl3bc12810 /dev/tty (v23) (szmaslic06/27003 233), start Thu 1/2 14:59
+
+    Users of CCAST_0801:  (Total of 2 licenses issued;  Total of 0 licenses in use)
+
+    """
+    status = 'idle'
+    info = LicenseInfo(lic)
+    for line in out.splitlines():
+        line = line.strip()
+        if status == 'idle':
+            #Error getting status: Cannot find license file. (-1,359:2 "No such file or directory")
+            if line.startswith("Error getting status"):
+                log.warning(f"{lic}")
+                return None
+            if not line.startswith("Users of VCAST_C_ENT_0800:"):
+                continue
+            status = 'start'
+            #[Users of VCAST_C_ENT_0800:  (Total of 2 licenses issued;  Total of 1 license in use)
+            pattern = r"\(Total of (\d+).*Total of (\d+).*\)"
+            ret = re.findall(pattern, line)
+            if not ret:
+                log.warning(f"{lic} parser [{line}] fail")
+                return None
+            (total, used) = ret[0]
+            info.total = int(total)
+            info.used = int(used)
+        elif status == 'start':
+            #zhenhao.he szl3bc12804 /dev/tty (v23) (szmaslic06/27003 337), start Thu 1/2 8:52
+            pattern = '(\S+) (\S+).*\((\S+)/.*\), start (.*)'
+            ret = re.findall(pattern, line)
+            if not ret:
+                continue
+            used = UsedInfo()
+            (used.user,used.host,used.lic,time_string) = ret[0]
+            #处理跨年的情况
+            year = datetime.now().year
+            start_time = datetime.strptime(f"{year} {time_string}", "%Y %a %m/%d %H:%M")
+            if start_time > datetime.now():
+                year -= 1
+                start_time = datetime.strptime(f"{year} {time_string}", "%Y %a %m/%d %H:%M")
+            used.start_time = start_time
+            # log.info(f"{lic} => {used}")
+            info.used_info.append(used)
+        # Next section
+        elif line.startswith('Users of '):
+            break
+    return info
+
+def draw_time_grpah(license_manager):
+    info = license_manager.sorted()
+    max_time = max(info.values())
+    name_len = max([len(_) for _ in info.keys()])
+    top = 100
+    for user, time in info.items():
+        curr = '█' * max(int(top * time / max_time), 1)
+        name_remain = ' ' * (name_len - len(user))
+        log.info(f"{user}{name_remain} :{time:5.2f}h {curr}")
+
+if __name__ == '__main__':
+    log.info("License status query...")
+    lm = LicenseStatistic()
+    log.info(lm)
+    available_lic = lm.available()
+    if not available_lic:
+        log.info("No license available")
+    log.info(f"All licenses is: {[str(_) for _ in lm.get_lic_list()]}")
+    for lic,number in lm.available():
+        log.info(f"{lic}: {number} lic available")
+    draw_time_grpah(lm)
\ No newline at end of file
diff --git a/server.py b/server.py
index d724586..44a441d 100755
--- a/server.py
+++ b/server.py
@@ -5,39 +5,121 @@ import os
 from pathlib import Path
 
 sample_data = {
-    "27003@szmis03": {
-        "name": "27003@szmis03",
-        "total": 2,
-        "used": 2,
-        "used_info": [
-            {
-                "user": "ekko.bao",
-                "host": "szl3bc1808",
-                "login_time": "58.9h"
-            },
-            {
-                "user": "zzc",
-                "host": "szl3bc1808",
-                "login_time": "58.9h"
-            }
-        ]
-    },
-    "27003@szmis05": {
-        "name": "27003@szmis05",
-        "total": 2,
-        "used": 0,
-        "used_info": []
-    },
-    "27003@szmis10": {
-        "name": "27003@szmis10",
-        "total": 2,
-        "used": 1,
-        "used_info": [{
-            "user": "zzc33333",
-            "host": "szl3bc1808",
-            "login_time": "58.9h"
-        }]
-    }
+  "27003@szmaslic03": {
+    "name": "27003@szmaslic03",
+    "total": 2,
+    "used": 1,
+    "used_info": [
+      {
+        "user": "haoxiang.ran",
+        "host": "szl3bc12808",
+        "lic": "szmaslic03",
+        "login": "0.41h"
+      }
+    ]
+  },
+  "27003@szmaslic04": {
+    "name": "27003@szmaslic04",
+    "total": 2,
+    "used": 1,
+    "used_info": [
+      {
+        "user": "macro.yang",
+        "host": "szl3bc12804",
+        "lic": "szmaslic04",
+        "login": "52.28h"
+      }
+    ]
+  },
+  "27003@szmaslic06": {
+    "name": "27003@szmaslic06",
+    "total": 2,
+    "used": 2,
+    "used_info": [
+      {
+        "user": "zhenhao.he",
+        "host": "szl3bc12804",
+        "lic": "szmaslic06",
+        "login": "0.20h"
+      },
+      {
+        "user": "phillip.chan",
+        "host": "szl3bc12810",
+        "lic": "szmaslic06",
+        "login": "0.16h"
+      }
+    ]
+  },
+  "27003@szmaslic07": {
+    "name": "27003@szmaslic07",
+    "total": 2,
+    "used": 1,
+    "used_info": [
+      {
+        "user": "zhiyi.li",
+        "host": "szl3bc12806",
+        "lic": "szmaslic07",
+        "login": "2.96h"
+      }
+    ]
+  },
+  "27003@szmaslic08": {
+    "name": "27003@szmaslic08",
+    "total": 2,
+    "used": 2,
+    "used_info": [
+      {
+        "user": "soo.liu",
+        "host": "szl3bc12809",
+        "lic": "szmaslic08",
+        "login": "6.55h"
+      },
+      {
+        "user": "haichao.ou",
+        "host": "szl3bc12806",
+        "lic": "szmaslic08",
+        "login": "5.93h"
+      }
+    ]
+  },
+  "27003@szmaslic09": {
+    "name": "27003@szmaslic09",
+    "total": 2,
+    "used": 2,
+    "used_info": [
+      {
+        "user": "louie.liang",
+        "host": "szl3bc12810",
+        "lic": "szmaslic09",
+        "login": "8.31h"
+      },
+      {
+        "user": "zabbix",
+        "host": "szl3bc06409",
+        "lic": "szmaslic09",
+        "login": "0.90h"
+      }
+    ]
+  },
+  "27003@szmaslic10": {
+    "name": "27003@szmaslic10",
+    "total": 2,
+    "used": 2,
+    "used_info": [
+      {
+        "user": "harvey.li",
+        "host": "szl3bc12810",
+        "lic": "szmaslic10",
+        "login": "57.38h"
+      },
+      {
+        "user": "kw.hu",
+        "host": "szl3bc12809",
+        "lic": "szmaslic10",
+        "login": "1.41h"
+      }
+    ]
+  }
 }
 
 class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
diff --git a/src/services/licenseService.js b/src/services/licenseService.js
index 3400754..4f2ca85 100755
--- a/src/services/licenseService.js
+++ b/src/services/licenseService.js
@@ -10,12 +10,12 @@ const mockData = {
             {
                 "user": "ekko.bao",
                 "host": "szl3bc1808",
-                "login_time": "3.4h"
+                "login": "3.4h"
             },
             {
                 "user": "zzc",
                 "host": "szl3bc1808",
-                "login_time": "6.9h"
+                "login": "6.9h"
             }
         ]
     },
@@ -32,7 +32,7 @@ const mockData = {
         "used_info": [{
             "user": "zzc33333",
             "host": "szl3bc1808",
-            "login_time": "58.9h"
+            "login": "58.9h"
         }]
     }
 };
diff --git a/src/utils/dataTransformer.js b/src/utils/dataTransformer.js
index d1b3acd..c581300 100755
--- a/src/utils/dataTransformer.js
+++ b/src/utils/dataTransformer.js
@@ -4,7 +4,7 @@ import { convertTimeToMinutes } from './timeConverter.js';
 function getMaxDuration(license) {
     if (!license.used_info.length) return 0;
     return Math.max(...license.used_info.map(info =>
-        convertTimeToMinutes(info.login_time)
+        convertTimeToMinutes(info.login)
     ));
 }
 
@@ -19,7 +19,7 @@ export function transformLicenseData(data) {
             usageDetails: license.used_info.map(info => ({
                 userName: info.user,
                 hostName: info.host,
-                duration: convertTimeToMinutes(info.login_time)
+                duration: convertTimeToMinutes(info.login)
             }))
         }))
         .sort((a, b) => b.maxDuration - a.maxDuration); // 按最大使用时长降序排序