无法正确设置Python日志记录器

Question

我正在尝试为我的模块设置日志记录：

使用了此处托管的完全相同的代码段： https://gist.github.com/kingspp/9451566a5555fb022215ca2b7b802f19

日志.yaml：

    info_file_handler:
        class: logging.handlers.RotatingFileHandler
        level: INFO
        formatter: standard
        filename: /tmp/info.log
        maxBytes: 10485760 # 10MB
        backupCount: 20
        encoding: utf8

设置\u logging.py

    def setup_logging(default_path='logging.yaml', default_level=logging.INFO, env_key='LOG_CFG'):
        path = default_path
        value = os.getenv(env_key, None)
        if value:
            path = value
        if os.path.exists(path):
            with open(path, 'rt') as f:
                try:
                    config = yaml.safe_load(f.read())
                    logging.config.dictConfig(config)

我在server.py中启动此操作： moto/服务器.py

   setup_logging()
   logger = logging.getLogger(__name__)
   logger.setLevel(logging.DEBUG)
   logger.info("Logger SETUP successfully")

这会将输出适当地记录到/tmp/info.log中，但是当我在子模块的另一个文件中初始化相同的文件时，我没有看到日志写入该文件：

moto/ec2/型号.py

    logger = logging.getLogger(__name__)
    logger.setLevel(logging.DEBUG)

    def describe_internet_gateways(
        self,
        internet_gateway_ids=None,
        filters=None):
        igws = []
        #logger = logging.getLogger(__name__)
        #logger.setLevel(logging.DEBUG)
        print("\n\n\n\n\n{}\n\n\n\n\n".format(__name__))
        logger.info("in describe_internet_gateways")
        session = get_db_session()
        igws = session.query(InternetGateway_t)

但是，如果我在方法内部初始化记录器（如果我取消对上述方法内部的注释部分的注释），那么日志将适当地写入/tmp/info.log文件中

有人能帮我什么我错过了，如何初始化日志只有一次，并使用它跨模块

阅读并尝试了python文档中的日志模块解释，但我仍然在讨论这个问题

编辑-1： 通过执行以下编辑，通过@olinox14尝试以下解决方案：

日志记录.json

     "handlers": {
         "console": {
             "class": "logging.StreamHandler",
             "level": "DEBUG",
             "formatter": "standard",
             "stream": "ext://sys.stdout"
         },
         "info_file_handler": {
             "class": "logging.handlers.RotatingFileHandler",
             "level": "INFO",
             "formatter": "standard",
             "filename": "/tmp/info.log",
             "maxBytes": 10485760,
             "backupCount": 20,
             "encoding": "utf8"
         },
         "error_file_handler": {
             "class": "logging.handlers.RotatingFileHandler",
             "level": "ERROR",
             "formatter": "error",
             "filename": "/tmp/errors.log",
             "maxBytes": 10485760,
             "backupCount": 20,
             "encoding": "utf8"
         },
         "debug_file_handler": {
             "class": "logging.handlers.RotatingFileHandler",
             "level": "DEBUG",
             "formatter": "standard",
             "filename": "/tmp/debug.log",
             "maxBytes": 10485760,
             "backupCount": 20,
             "encoding": "utf8"
         },
         "critical_file_handler": {
             "class": "logging.handlers.RotatingFileHandler",
             "level": "CRITICAL",
             "formatter": "standard",
             "filename": "/tmp/critical.log",
             "maxBytes": 10485760,
             "backupCount": 20,
             "encoding": "utf8"
         },
         "warn_file_handler": {
             "class": "logging.handlers.RotatingFileHandler",
             "level": "WARN",
             "formatter": "standard",
             "filename": "/tmp/warn.log",
             "maxBytes": 10485760,
             "backupCount": 20,
             "encoding": "utf8"
         }
     },
     "root": {
         "level": "NOTSET",
         "handlers": [
             "console",
         ],
         "propagate": true
     },
     "loggers": {
             "test": {
                     "level": "DEBUG",
                     "handlers": [
                             "console",
                             "info_file_handler",
                             "error_file_handler",
                             "critical_file_handler",
                             "debug_file_handler",
                             "warn_file_handler"
                     ],
                     "propagate": "no"
             }
     }
 }

但现在我看到控制台上的日志，但没有在文件中记录

Answer 1

基本上，命名的记录器是单例的。每次调用新名称时都会设置一个新的记录器，如果调用以前使用的名称，则会检索现有的记录器

这里有一个解决方案：

日志.yaml：

version: 1

formatters:
    standard:
        format: "%(asctime)s - %(levelname)s - %(message)s"

handlers:
    info_file_handler:
        class: logging.handlers.RotatingFileHandler
        level: INFO
        formatter: standard
        filename: info.log
        maxBytes: 10485760 # 10MB
        backupCount: 20
        encoding: utf8

loggers:
    my_logger:
        level: DEBUG
        handlers: [info_file_handler]
        propagate: no

moto/服务器.py

import logging.config
import os

import yaml

from ec2 import models

def setup_logging(default_path='logging.yaml', default_level=logging.INFO, env_key='LOG_CFG'):
    path = os.getenv(env_key, None) or default_path
    try:
        with open(path, 'rt') as f:
            config = yaml.safe_load(f.read())
            logging.config.dictConfig(config)
    except FileNotFoundError:
        #... load the basic config here?
        pass

setup_logging()
logger = logging.getLogger("my_logger")
logger.info("Logger SETUP successfully")

models.f()

moto/ec2/型号.py

import logging

logger = logging.getLogger("my_logger")

def f():
    logger.info("Logger called successfully")