examples of logger using smtp

[Rob Wolfe]

DwBear75 <dwbear75 at gmail.com> writes:

> I am hoping to find some simple examples of how to create a logger
> instance using smtphandler. I don't want to create a separate ini
> file. I just want to sent the smtphost, from, to right in the code
> when I instantiate the logger. I can't seem to find simple code on how
> to do this. Any pointers ?

If you need to use smtp authentication there is a small problem
with `SMTPHandler`. Actually, you need to subclass `SMTPHandler`
and override `emit` method, e.g.:

from logging import getLogger, Formatter, DEBUG
from logging.handlers import SMTPHandler

class SMTPAuthHandler(SMTPHandler):
    def __init__(self, mailhost, fromaddr, toaddrs, subject,
                 user=None, password=None):
        SMTPHandler.__init__(self, mailhost, fromaddr, toaddrs, subject)
        self.user = user
        self.password= password
        
    def emit(self, record):
        import smtplib
        from email.Utils import formatdate
        smtp = smtplib.SMTP(self.mailhost, smtplib.SMTP_PORT)
        if self.user and self.password:
            smtp.login(self.user, self.password)
        msg = self.format(record)
        msg = "From: %s\r\nTo: %s\r\nSubject: %s\r\nDate: %s\r\n\r\n%s" % (
            self.fromaddr,
            ','.join(self.toaddrs),
            self.getSubject(record),
            formatdate(), msg)
        smtp.sendmail(self.fromaddr, self.toaddrs, msg)
        smtp.quit()
    

def smtp_logger(level, mailhost, fromaddr, toaddr, subject,
                user=None, password=None):
    logger = getLogger('AppName')
    logger.setLevel(level)
    hdlr = SMTPAuthHandler(mailhost, fromaddr, toaddr, subject,
                           user, password)
    fmt = Formatter('%(asctime)s %(name)-12s %(levelname)-8s %(message)s',
                    '%Y-%m-%d %H:%M:%S')
    hdlr.setFormatter(fmt)
    logger.addHandler(hdlr)
    hdlr.setLevel(level)
    return logger


logger = smtp_logger(DEBUG, 'mailhost', 'fromaddr', 'toaddr',
                     'DEBUG: AppName', 'user', 'password')
logger.debug('some message')


HTH,
Rob