Subversion Repositories SmartDukaan

from email.mime.text import MIMEText

from shop2020.clients.HelperClient import HelperClient

from shop2020.clients.TransactionClient import TransactionClient

from shop2020.thriftpy.utils.ttypes import Mail

from shop2020.utils.daemon import Daemon

import optparse

import sched

import smtplib

import sys

import time

import os

from email.MIMEMultipart import MIMEMultipart

from email.MIMEBase import MIMEBase

from email.MIMEText import MIMEText

from email import Encoders

class EmailSender(Daemon):

    def __init__(self, logfile='/var/log/utils/emailsender/emailsender.log', pidfile='/var/run/email-sender.pid', count = 0):

        Daemon.__init__(self, pidfile, stdout=logfile, stderr=logfile)

        print 'EmailSender initiated at', time.time()

        self.email_schedular = sched.scheduler(time.time, time.sleep)

        self.time_to_sleep = 10

        self.count = count

        self.exceptionCount = {}

        self.authenticate()

    def authenticate(self):

        try:

            print "Attempting authentication at ", time.time()

            self.sendGridMailServer = smtplib.SMTP("smtp.sendgrid.net", 587)

            self.sendGridSender = "euser"

            self.sendGridPassword = "shop2020"

            self.sendGridMailServer.ehlo()

            self.sendGridMailServer.starttls()

            self.sendGridMailServer.ehlo()

            self.sendGridMailServer.login(self.sendGridSender, self.sendGridPassword)

#            self.gmailServer = smtplib.SMTP("smtp.gmail.com", 587)

#            self.gmailSender = "help@shop2020.in"

#            self.gmailPassword = "5h0p2o2o"

#            self.gmailServer.ehlo()

#            self.gmailServer.starttls()

#            self.gmailServer.ehlo()

#            self.gmailServer.login(self.gmailSender, self.gmailPassword)            

            print "Authentication successful", time.time()

        except smtplib.SMTPConnectError as e:

            print 'Specified host did not respond correctly', e        

        except smtplib.SMTPHeloError as e:

            print 'The server did not reply properly to the HELO greeting.', e

        except smtplib.SMTPAuthenticationError as e:

            print 'The server did not accept the username/password combination.', e

        except smtplib.SMTPException as e:

            print e

        except Exception as e:

            print sys.exc_info()[0]

            print e

    def get_attachment_part(self, document, filename):

        part = MIMEBase('application', 'octet-stream')

        part.set_payload(document)

        Encoders.encode_base64(part)

        part.add_header('Content-Disposition', 'attachment; filename=%s' % filename + "-insurance-policy.pdf")

        return part

    def sendMail(self, mail):

        msg = MIMEMultipart()

        msg['From'] = "help@saholic.com"

        msg['To'] = ', '.join(mail.emailTo)

        msg['Cc'] = ', '.join(mail.cc)

        #msg['Bcc'] = ', '.join(mail.bcc)

        msg['Subject'] = mail.subject

        html_msg = MIMEText(mail.body, 'html')

        msg.attach(html_msg)

        if mail.emailType == "DeliverySuccess":

            tclient = TransactionClient().get_client()

            document = tclient.getDocument(1, int(mail.source))

            if document != bin(0):

                msg.attach(self.get_attachment_part(document, mail.source))

        try:

            self.setMailServerAndPassword(mail)

            rs = self.mailServer.sendmail(self.password, mail.emailTo + mail.cc + mail.bcc + ['backup@saholic.com'], msg.as_string())

        except smtplib.SMTPServerDisconnected as e:

            print 'Server Disconnected at', time.time()

            self.authenticate()

            rs = self.mailServer.sendmail(self.password, mail.emailTo + mail.cc + mail.bcc + ['backup@saholic.com'], msg.as_string())

        print msg['To']

        # Should be mailServer.quit(), but that crashes...

        return rs

    def setMailServerAndPassword(self, mail):

        self.mailServer = self.sendGridMailServer

        self.password = self.sendGridPassword

#        self.mailServer = self.gmailServer

#        self.password = self.gmailPassword

#

#        for receiver in mail.to:

#            if not receiver.endswith('@saholic.com') and not receiver.endswith('@shop2020.in'):

#                self.mailServer = self.sendGridMailServer

#                self.password = self.sendGridPassword

#                break

    def send(self):

        '''

        If sending fails for a mail for more than 10 times then we will exit the sender.

        This is done to avoid sending a mail many times if one of the address in the 'emailTo' list is wrong.

        '''

        if self.count > 10:

            print str(self.count)

            print "Number of failed attempts is more than 10. Exiting"

            sys.exit()

        for emailId in self.exceptionCount.keys() :

            if self.exceptionCount[emailId] > 10:

                print "Number of exceptions for email id : " + str(emailId) + " is : " + str(self.exceptionCount[emailId]) + ". Exiting"

                sys.exit()

        print "Despatch stared at ", time.time()

        helper_client = HelperClient().get_client()

        emails_to_be_dispatched = helper_client.getEmailsToBeSent()

        print len(emails_to_be_dispatched)

        for email in emails_to_be_dispatched:

            try:

                send_result = "error"

                send_result = self.sendMail(email)

            except Exception as e:

                print sys.exc_info()[0]

                print e

                print 'Error occurred sending email with id - ' + str(email.id)

                if self.exceptionCount.has_key(email.id) :

                    self.exceptionCount[email.id] = self.exceptionCount[email.id] + 1

                else :

                    self.exceptionCount[email.id] = 1

                continue

            if len(send_result) == 0:

                print "Sent at", time.time()

                helper_client.markEmailAsSent(email.id)

                if self.exceptionCount.has_key(email.id) :

                    del self.exceptionCount[email.id]

            else:

                print "Failed sending email. Id:", " Time:", time.time()

                self.count = self.count + 1

        self.email_schedular.enter(self.time_to_sleep, 1, self.send, ())

    def run(self):

        self.email_schedular.enter(self.time_to_sleep, 1, self.send, ())

        self.email_schedular.run()

if __name__ == "__main__":

    parser = optparse.OptionParser()

    parser.add_option("-l", "--logfile", dest="logfile",

                      type="string",

                      help="Log all output to LOG_FILE",

                      )

    parser.add_option("-i", "--pidfile", dest="pidfile",

                      type="string",

                      help="Write the PID to pidfile")

    (options, args) = parser.parse_args()

    daemon = EmailSender(options.logfile, options.pidfile, 0)

    if len(args) == 0:

        daemon.run()

    elif len(args) == 1:

        if 'start' == args[0]:

            daemon.start()

        elif 'stop' == args[0]:

            daemon.stop()

        elif 'restart' == args[0]:

            daemon.restart()

        else:

            print "Unknown command"

            sys.exit(2)

        sys.exit(0)

    else:

        print "usage: %s start|stop|restart" % sys.argv[0]

        sys.exit(2)