77 lines
2.6 KiB
Python
77 lines
2.6 KiB
Python
|
|
import smtplib
|
|
from datetime import timedelta
|
|
from socket import error as SocketError
|
|
|
|
from django.core.mail import get_connection
|
|
from django.db.models import Q
|
|
from django.utils import timezone
|
|
|
|
from orchestra.utils.sys import LockFile, OperationLocked
|
|
|
|
from . import settings
|
|
from .models import Message
|
|
|
|
|
|
def send_message(message, connection=None, bulk=settings.MAILER_BULK_MESSAGES):
|
|
message.last_try = timezone.now()
|
|
update_fields = ['last_try']
|
|
if message.state != message.QUEUED:
|
|
message.retries += 1
|
|
update_fields.append('retries')
|
|
message.save(update_fields=update_fields)
|
|
if connection is None:
|
|
connection = get_connection(backend='django.core.mail.backends.smtp.EmailBackend')
|
|
if connection.connection is None:
|
|
try:
|
|
connection.open()
|
|
except Exception as err:
|
|
message.defer()
|
|
message.log(err)
|
|
return
|
|
error = None
|
|
try:
|
|
connection.connection.sendmail(message.from_address, [message.to_address], message.content.encode())
|
|
except (SocketError,
|
|
smtplib.SMTPSenderRefused,
|
|
smtplib.SMTPRecipientsRefused,
|
|
smtplib.SMTPAuthenticationError) as err:
|
|
message.defer()
|
|
error = err
|
|
else:
|
|
message.sent()
|
|
message.log(error)
|
|
return connection
|
|
|
|
|
|
def send_pending(bulk=settings.MAILER_BULK_MESSAGES):
|
|
try:
|
|
with LockFile('/dev/shm/mailer.send_pending.lock'):
|
|
connection = get_connection(backend='django.core.mail.backends.smtp.EmailBackend')
|
|
cur, total = 0, 0
|
|
for message in Message.objects.filter(state=Message.QUEUED).order_by('priority', 'last_try', 'created_at'):
|
|
if cur >= bulk:
|
|
connection.close()
|
|
cur = 0
|
|
send_message(message, connection, bulk)
|
|
cur += 1
|
|
total += 1
|
|
now = timezone.now()
|
|
qs = Q()
|
|
for retries, seconds in enumerate(settings.MAILER_DEFERE_SECONDS):
|
|
delta = timedelta(seconds=seconds)
|
|
qs = qs | Q(retries=retries, last_try__lte=now-delta)
|
|
for message in Message.objects.filter(state=Message.DEFERRED).filter(qs).order_by('priority', 'last_try'):
|
|
if cur >= bulk:
|
|
connection.close()
|
|
cur = 0
|
|
send_message(message, connection, bulk)
|
|
cur += 1
|
|
total += 1
|
|
return total
|
|
except OperationLocked:
|
|
pass
|
|
finally:
|
|
if 'connection' in vars() and connection.connection is not None:
|
|
connection.close()
|