Django的logging使用

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': FORMATTERS,
    'handlers': HANDLERS,
    'loggers': {
        'django': {
            'handlers': ['django', 'mail_admin', 'exception'],
            'level': 'INFO',
            'propagate': False
        },
        'django.db.backends': {
            'handlers': ['default'],
            'level': 'DEBUG',
            'propagate': False
        },
        'access': {
            'handlers': ['access'],
            'level': 'INFO',
            'propagate': False
        },
        'celery.tasks': {
            'handlers': ['mail_admin'],
            'level': 'INFO',
            'propagate': False
        },
        'parso': {
            'handlers': ['parso'],
            'level': 'INFO'
        }
    },
    'root': {
        'handlers': ['default', 'mail_admin', 'exception'],
        'level': 'DEBUG'
    },
}

If the disable_existing_loggers key in the LOGGING dictConfig is set to True (which is the dictConfig default if the key is missing) then 
all loggers from the default configuration will be disabled.

FORMATTERS

FORMATTERS = {
    'access': {
        'format': '%(client_ip)s %(x_forwarded_ip)s %(asctime)s %(process)d/%(thread)d %(http_user_agent)s '
                  '%(server_name)s %(protocol)s %(path)s %(status)s %(content_length)s %(duration)s '
                  '%(levelname)s %(user)s %(last_login_role)s %(data_b)s %(message)s',
        'datefmt': "%Y/%m/%d %H:%M:%S"
    },
    'django': {
        'format': '[%(asctime)s] %(process)d/%(thread)d %(levelname)s %(message)s',
        'datefmt': "%Y/%m/%d %H:%M:%S"
    },
    'exception': {
        'format': '[%(asctime)s] %(process)d/%(thread)d %(name)s %(funcName)s %(lineno)s %(levelname)s %(message)s',
        'datefmt': "%Y/%m/%d %H:%M:%S"
    },
    'default': {
        'format': '%(asctime)s %(process)d/%(thread)d %(name)s:%(lineno)s %(levelname)s - %(message)s',
        'datefmt': "%Y/%m/%d %H:%M:%S"
    }
}

if datefmt (a string) is specified, it is used with time.strftime() to format the creation time of the record.

fields:

Attribute name	Format	Description
args	You shouldn’t need to format this yourself.	The tuple of arguments merged into msg to produce message, or a dict whose values are used for the merge (when there is only one argument, and it is a dictionary).
asctime	%(asctime)s	Human-readable time when the LogRecord was created. By default this is of the form ‘2003-07-08 16:49:45,896’ (the numbers after the comma are millisecond portion of the time).
created	%(created)f	Time when the LogRecord was created (as returned by time.time()).
exc_info	You shouldn’t need to format this yourself.	Exception tuple (à la sys.exc_info) or, if no exception has occurred, None.
filename	%(filename)s	Filename portion of pathname.
funcName	%(funcName)s	Name of function containing the logging call.
levelname	%(levelname)s	Text logging level for the message ('DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL').
levelno	%(levelno)s	Numeric logging level for the message (DEBUG, INFO, WARNING, ERROR, CRITICAL).
lineno	%(lineno)d	Source line number where the logging call was issued (if available).
message	%(message)s	The logged message, computed as msg % args. This is set when Formatter.format() is invoked.
module	%(module)s	Module (name portion of filename).
msecs	%(msecs)d	Millisecond portion of the time when the LogRecordwas created.
msg	You shouldn’t need to format this yourself.	The format string passed in the original logging call. Merged with args to produce message, or an arbitrary object (see Using arbitrary objects as messages).
name	%(name)s	Name of the logger used to log the call.
pathname	%(pathname)s	Full pathname of the source file where the logging call was issued (if available).
process	%(process)d	Process ID (if available).
processName	%(processName)s	Process name (if available).
relativeCreated	%(relativeCreated)d	Time in milliseconds when the LogRecord was created, relative to the time the logging module was loaded.
stack_info	You shouldn’t need to format this yourself.	Stack frame information (where available) from the bottom of the stack in the current thread, up to and including the stack frame of the logging call which resulted in the creation of this record.
thread	%(thread)d	Thread ID (if available).
threadName	%(threadName)s	Thread name (if available).

你也可以自定义

建议在自定义中间件中设置

class LoggingMiddleware(object):
     def __init__(self, get_response):
         self.get_response = get_response
         self.logger = logging.getLogger('django')
         self.logger_access = logging.getLogger('access')
　　　　　
    def process_response(self, request, response):
        logging_dict = {
            'duration': time() - request.timer,
            'client_ip': request.META.get('REMOTE_ADDR'),
            'x_forwarded_ip': 
            'path': request.full_path,
            'status': response.status_code,
            'user': user_login_id,
            'last_login_role': last_login_role,
            'http_user_agent': request.META.get('HTTP_USER_AGENT'),
            'server_name': request.META.get('SERVER_NAME'),
            'content_length': request.META.get('CONTENT_LENGTH'),
            'protocol': request.META.get('SERVER_PROTOCOL'),
            'data_b': data_b
        }
        self.logger_access.info(data_c, extra=logging_dict)  # 通过关键字参数extra

HANDLERS

HANDLERS = {
    'mail_admin': {
        'level': 'ERROR',
        'class': 'gacommon.helpers.SendEmailHandler'
    },
    'django': {
        'level': 'INFO',
        'class': 'logging.handlers.TimedRotatingFileHandler',
        'filename': '/logs/server.log',
        'when': 'midnight', # 时间后缀
        'interval': 1,
        'formatter': 'django'
    },
    'exception': {
        'level': 'WARNING',
        'class': 'logging.handlers.TimedRotatingFileHandler',
        'filename': '/logs/exception.log',
        'when': 'midnight',
        'interval': 1,
        'formatter': 'exception'
    },
    'access': {
        'level': 'INFO',
        'class': 'logging.handlers.TimedRotatingFileHandler',
        'filename': '/logs/access.log',
        'when': 'midnight',
        'interval': 1,
        'formatter': 'access'
    },
    'parso': {
        'level': 'INFO',
        'class': 'logging.StreamHandler',
        'formatter': 'default'
    },
    'default': {
        'level': 'INFO',
        'class': 'logging.handlers.TimedRotatingFileHandler',
        'filename': '/logs/default.log',
        'when': 'midnight',
        'interval': 1,
        'formatter': 'default'
    }
}

通过自定email,在异常发生时发送邮件

class SendEmailHandler(Handler):
    """An exception log handler that emails log entries to settings.EXCEPTION_MAIL_LIST.
    """
    actitve_count = 0

    @postpone
    def send_admin_mail(self, subject, message, mail_from, mail_to, fail_silently):
        if SendEmailHandler.actitve_count < 5:
            SendEmailHandler.actitve_count += 1
            send_mail(subject, message, mail_from, mail_to, fail_silently=fail_silently)
            SendEmailHandler.actitve_count -= 1
        else:
            pass

    def emit(self, record):
        if os.getenv('DONT_SEND_EXCEPTION_MAIL'):  # 应用于本地开发
            return

        subject = '%s: %s %s' % ( 
            ENV.upper(),
            record.levelname,
            record.getMessage()
        )

        def format_subject(subject):
            """
            Escape CR and LF characters.
            """
            return subject.replace('\n', ' ').replace('\r', ' ')

        subject = format_subject(subject)  # 邮件标题
        message = record.getMessage() + '\n' + traceback.format_exc()

        self.send_admin_mail(subject, message, EXCEPTION_MAIL_FROM, EXCEPTION_MAIL_LIST, False)

settings中邮件配置

EXCEPTION_MAIL_FROM = ''
EMAIL_HOST = 'smtp.xx.com'
EMAIL_PORT = ''
EMAIL_HOST_USER = ''
EMAIL_HOST_PASSWORD = ''
EMAIL_USE_TLS = True
EXCEPTION_MAIL_LIST = []

 

转载于:https://www.cnblogs.com/jiaqi-666/p/11097346.html