python监控日志并予以清理，python监控日志,Daemonize.py

python监控日志并予以清理，python监控日志,Daemonize.py

Daemonize.py

import osimport sysclass Daemonize:    def daemonize(self):        try:            pid = os.fork()            if pid > 0:                sys.exit(0)        except OSError,e:            sys.stderr.write("Fork 1 has failed --> %d--[%s]\n" \                             % (e.errno,e.strerror))            sys.exit(1)        os.chdir('/')        #detach from terminal        os.setsid()        #file to be created?        os.umask(0)        try:            pid = os.fork()            if pid > 0:                print "Daemon process pid %d" % pid                sys.exit(0)        except OSError, e:            sys.stderr.write("Fork 2 has failed --> %d--[%s]" \                             % (e.errno, e.strerror))            sys.exit(1)        sys.stdout.flush()        sys.stderr.flush()    def start_daemon(self):        self.daemonize()        self.run_daemon()    def run_daemon(self):        '''override'''        pass

watchLog.py

import osimport smtplibfrom smtplib import SMTPExceptionimport timefrom Daemonize import Daemonizefrom subprocess import PopenLOG_PATH = ''LOG_FILENAME = ''class WatchLog(Daemonize):    def __init__(self, file_path, size_limit=15728640):        self.file = os.path.realpath(file_path)        print self.file        print '---'        assert os.path.isfile(self.file), '%s does not exist' % self.file        print '+++'        self.smtpserver = "path to your host"        self.recipient_list = ['@gmail.com']        self.sender = '@'        self.file_size_limit = size_limit        self.email_body = "path to your email tempalte"    def send_an_email(self):        email_body = open(self.email_body, 'r').read()        session_obj = smtplib.SMTP(self.smtpserver)        try:            session_obj.sendmail(self.sender, self.recipient_list, email_body)        except SMTPException:            print "unable to send emails"        finally:            session_obj.close()    def delFile(self):        os.chdir(LOG_PATH)        cmd = "echo '' > " + LOG_FILENAME        try:            Popen(cmd, shell=True)        except Exception,e:            print e    def watch(self):        current_file_size = os.path.getsize(self.file)        if current_file_size > self.file_size_limit:            self.defFile()    def run_daemon(self): #override        while True:            self.watch()            time.sleep(3600)if __name__ == "__main__":    watchdog = WatchLog(LOG_PATH+LOG_FILENAME)    watchdog.start_daemon()