Python + logging 日志和日志文件(一天一个日志文

项目中用日志，但是老的代码没有日志文件，查找错误很麻烦，我经过两个小时的摸索，写了个日志工具类。可以方便的集成日志。
日志工具类自动生成Logs文件夹如下

log_helper.py

import logging
import os.path
import time

logging.basicConfig(format='%(asctime)s - %(levelname)s--->: %(message)s',
                    level=logging.DEBUG,
                    filemode='a')


def createLogFile(name, level):
    # 创建一个logger
    logger = logging.getLogger()
    logger.setLevel(logging.INFO)  # Log等级总开关

    # 创建一个handler，用于写入日志文件
    rq = time.strftime('%Y-%m-%d', time.localtime(time.time()))
    # log_date = rq[:10]
    log_path = os.getcwd() + '/Logs/'
    isExists = os.path.exists(log_path)
    # # 判断结果
    if not isExists:
        os.makedirs(log_path)
    log_name = os.getcwd() + '/Logs/{}-'.format(rq) + name + '.log'
    fh = logging.FileHandler(log_name, mode='a')
    fh.setLevel(level)  # 输出到file的log等级的开关

    # 定义handler的输出格式
    formatter = logging.Formatter("%(asctime)s - %(levelname)s--->: %(message)s")
    fh.setFormatter(formatter)
    logger.addHandler(fh)


def print_info(info, *args):
    createLogFile("info", logging.INFO)
    if len(args) > 0:
        log = ""
        for arg in args:
            log += "{}"
        logging.info((info + log).format(*args))
    else:
        logging.info(info)


def print_error(error, *args):
    createLogFile("error",logging.ERROR)
    if len(args) > 0:
        log = ""
        for arg in args:
            log += "{}"
        logging.error((error + log).format(*args))
    else:
        logging.error(error)

def deleteBigFile(path):
    for file in os.listdir(path):
        fsize = os.path.getsize(f'{path}{file}')
        if (fsize > 1 * 1024 * 1024 * 1024):
            os.remove(f'{path}{file}')

if __name__ == '__main__':
    createLogFile("info", logging.INFO)

简单使用：

app.py

import json
import time
import log_helper

from flask import Flask, request
from waitress import serve

from host_helper import HostManager
from request_helper import api

app = Flask(__name__)


def access_log(fn):
    def wrapper():
        t_begin = time.time()
        res = fn()
        t_end = time.time()
        data = request.data.decode()
        print('url_params:{} \ncost:{} s \nres:{}\n'.format(data, t_end - t_begin, res[0:50]))
        return res

    return wrapper


@app.route('/dispatch', methods=['POST'])
@access_log
def dispatch():
    data = request.data.decode()
    body = json.loads(data)
    headers = body.get('headers')
    params = body.get('params')
    url = body.get('url')
    method = body.get('method')
    proxy = body.get('proxy')
    timeout = body.get('timeout')
    res = api.exec(url=url, method=method, headers=headers, data=params, proxy=proxy, timeout=timeout)
    log_helper.print_info('url_params:{} \n res:{}\n'.format(data,  res[0:100]))
    return res

另外可以用启动脚本，nohup 记录日志(nohup: 把输出追加到"nohup.out")，这个没有细细研究。有兴趣的同学可以研究一下。

reboot.sh

PID=`ps -ef |grep app.py | grep -v grep | awk '{print $2}'`
echo ${PID}
kill -9 ${PID}
echo "shutdown this process"
nohup python3 app.py &
echo "reboot success"

自动删除5天前的日志文件 auto-del-5-days-ago-log.sh

#!/bin/sh

#1、添加文件可运行权限
#chmod +x /data/shell/bin/auto-del-5-days-ago-log.sh
#2、打开系统 定时任务的配置
# crontab -e
#3、添加配置 每天0:00执行任务
# 0 0 * * * /root/nezha-proxy/auto-del-5-days-ago-log.sh

DIR=$(cd `dirname $0` ; pwd)
echo "删除5天前的log日志" $DIR/Logs/
find $DIR/Logs/ -mtime +5 -name "*.log" -exec rm -rf {} \;