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Split multiplart email sending into a dedicated handler (#9977)

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Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
This commit is contained in:
Brendan Abolivier 2021-05-17 12:33:38 +02:00 committed by GitHub
parent 6660912226
commit 41ac128fd3
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5 changed files with 121 additions and 89 deletions
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1
changelog.d/9977.misc Normal file
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@ -0,0 +1 @@
Split multipart email sending into a dedicated handler.

55
synapse/handlers/account_validity.py
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@ -15,12 +15,9 @@
import email.mime.multipart
import email.utils
import logging
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from typing import TYPE_CHECKING, List, Optional, Tuple
from synapse.api.errors import StoreError, SynapseError
from synapse.logging.context import make_deferred_yieldable
from synapse.metrics.background_process_metrics import wrap_as_background_process
from synapse.types import UserID
from synapse.util import stringutils
@ -36,9 +33,11 @@ class AccountValidityHandler:
self.hs = hs
self.config = hs.config
self.store = self.hs.get_datastore()
self.sendmail = self.hs.get_sendmail()
self.send_email_handler = self.hs.get_send_email_handler()
self.clock = self.hs.get_clock()
self._app_name = self.hs.config.email_app_name
self._account_validity_enabled = (
hs.config.account_validity.account_validity_enabled
)
@ -63,23 +62,10 @@ class AccountValidityHandler:
self._template_text = (
hs.config.account_validity.account_validity_template_text
)
account_validity_renew_email_subject = (
self._renew_email_subject = (
hs.config.account_validity.account_validity_renew_email_subject
)
try:
app_name = hs.config.email_app_name
self._subject = account_validity_renew_email_subject % {"app": app_name}
self._from_string = hs.config.email_notif_from % {"app": app_name}
except Exception:
# If substitution failed, fall back to the bare strings.
self._subject = account_validity_renew_email_subject
self._from_string = hs.config.email_notif_from
self._raw_from = email.utils.parseaddr(self._from_string)[1]
# Check the renewal emails to send and send them every 30min.
if hs.config.run_background_tasks:
self.clock.looping_call(self._send_renewal_emails, 30 * 60 * 1000)
@ -159,38 +145,17 @@ class AccountValidityHandler:
}
html_text = self._template_html.render(**template_vars)
html_part = MIMEText(html_text, "html", "utf8")
plain_text = self._template_text.render(**template_vars)
text_part = MIMEText(plain_text, "plain", "utf8")
for address in addresses:
raw_to = email.utils.parseaddr(address)[1]
multipart_msg = MIMEMultipart("alternative")
multipart_msg["Subject"] = self._subject
multipart_msg["From"] = self._from_string
multipart_msg["To"] = address
multipart_msg["Date"] = email.utils.formatdate()
multipart_msg["Message-ID"] = email.utils.make_msgid()
multipart_msg.attach(text_part)
multipart_msg.attach(html_part)
logger.info("Sending renewal email to %s", address)
await make_deferred_yieldable(
self.sendmail(
self.hs.config.email_smtp_host,
self._raw_from,
raw_to,
multipart_msg.as_string().encode("utf8"),
reactor=self.hs.get_reactor(),
port=self.hs.config.email_smtp_port,
requireAuthentication=self.hs.config.email_smtp_user is not None,
username=self.hs.config.email_smtp_user,
password=self.hs.config.email_smtp_pass,
requireTransportSecurity=self.hs.config.require_transport_security,
)
await self.send_email_handler.send_email(
email_address=raw_to,
subject=self._renew_email_subject,
app_name=self._app_name,
html=html_text,
text=plain_text,
)
await self.store.set_renewal_mail_status(user_id=user_id, email_sent=True)

98
synapse/handlers/send_email.py Normal file
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@ -0,0 +1,98 @@
# Copyright 2021 The Matrix.org C.I.C. Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import email.utils
import logging
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from typing import TYPE_CHECKING
from synapse.logging.context import make_deferred_yieldable
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class SendEmailHandler:
def __init__(self, hs: "HomeServer"):
self.hs = hs
self._sendmail = hs.get_sendmail()
self._reactor = hs.get_reactor()
self._from = hs.config.email.email_notif_from
self._smtp_host = hs.config.email.email_smtp_host
self._smtp_port = hs.config.email.email_smtp_port
self._smtp_user = hs.config.email.email_smtp_user
self._smtp_pass = hs.config.email.email_smtp_pass
self._require_transport_security = hs.config.email.require_transport_security
async def send_email(
self,
email_address: str,
subject: str,
app_name: str,
html: str,
text: str,
) -> None:
"""Send a multipart email with the given information.
Args:
email_address: The address to send the email to.
subject: The email's subject.
app_name: The app name to include in the From header.
html: The HTML content to include in the email.
text: The plain text content to include in the email.
"""
try:
from_string = self._from % {"app": app_name}
except (KeyError, TypeError):
from_string = self._from
raw_from = email.utils.parseaddr(from_string)[1]
raw_to = email.utils.parseaddr(email_address)[1]
if raw_to == "":
raise RuntimeError("Invalid 'to' address")
html_part = MIMEText(html, "html", "utf8")
text_part = MIMEText(text, "plain", "utf8")
multipart_msg = MIMEMultipart("alternative")
multipart_msg["Subject"] = subject
multipart_msg["From"] = from_string
multipart_msg["To"] = email_address
multipart_msg["Date"] = email.utils.formatdate()
multipart_msg["Message-ID"] = email.utils.make_msgid()
multipart_msg.attach(text_part)
multipart_msg.attach(html_part)
logger.info("Sending email to %s" % email_address)
await make_deferred_yieldable(
self._sendmail(
self._smtp_host,
raw_from,
raw_to,
multipart_msg.as_string().encode("utf8"),
reactor=self._reactor,
port=self._smtp_port,
requireAuthentication=self._smtp_user is not None,
username=self._smtp_user,
password=self._smtp_pass,
requireTransportSecurity=self._require_transport_security,
)
)

51
synapse/push/mailer.py
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@ -12,12 +12,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import email.mime.multipart
import email.utils
import logging
import urllib.parse
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Optional, TypeVar
import bleach
@ -27,7 +23,6 @@ from synapse.api.constants import EventTypes, Membership
from synapse.api.errors import StoreError
from synapse.config.emailconfig import EmailSubjectConfig
from synapse.events import EventBase
from synapse.logging.context import make_deferred_yieldable
from synapse.push.presentable_names import (
calculate_room_name,
descriptor_from_member_events,
@ -108,7 +103,7 @@ class Mailer:
self.template_html = template_html
self.template_text = template_text
self.sendmail = self.hs.get_sendmail()
self.send_email_handler = hs.get_send_email_handler()
self.store = self.hs.get_datastore()
self.state_store = self.hs.get_storage().state
self.macaroon_gen = self.hs.get_macaroon_generator()
@ -310,17 +305,6 @@ class Mailer:
self, email_address: str, subject: str, extra_template_vars: Dict[str, Any]
) -> None:
"""Send an email with the given information and template text"""
try:
from_string = self.hs.config.email_notif_from % {"app": self.app_name}
except TypeError:
from_string = self.hs.config.email_notif_from
raw_from = email.utils.parseaddr(from_string)[1]
raw_to = email.utils.parseaddr(email_address)[1]
if raw_to == "":
raise RuntimeError("Invalid 'to' address")
template_vars = {
"app_name": self.app_name,
"server_name": self.hs.config.server.server_name,
@ -329,35 +313,14 @@ class Mailer:
template_vars.update(extra_template_vars)
html_text = self.template_html.render(**template_vars)
html_part = MIMEText(html_text, "html", "utf8")
plain_text = self.template_text.render(**template_vars)
text_part = MIMEText(plain_text, "plain", "utf8")
multipart_msg = MIMEMultipart("alternative")
multipart_msg["Subject"] = subject
multipart_msg["From"] = from_string
multipart_msg["To"] = email_address
multipart_msg["Date"] = email.utils.formatdate()
multipart_msg["Message-ID"] = email.utils.make_msgid()
multipart_msg.attach(text_part)
multipart_msg.attach(html_part)
logger.info("Sending email to %s" % email_address)
await make_deferred_yieldable(
self.sendmail(
self.hs.config.email_smtp_host,
raw_from,
raw_to,
multipart_msg.as_string().encode("utf8"),
reactor=self.hs.get_reactor(),
port=self.hs.config.email_smtp_port,
requireAuthentication=self.hs.config.email_smtp_user is not None,
username=self.hs.config.email_smtp_user,
password=self.hs.config.email_smtp_pass,
requireTransportSecurity=self.hs.config.require_transport_security,
)
await self.send_email_handler.send_email(
email_address=email_address,
subject=subject,
app_name=self.app_name,
html=html_text,
text=plain_text,
)
async def _get_room_vars(

5
synapse/server.py
View File

@ -104,6 +104,7 @@ from synapse.handlers.room_list import RoomListHandler
from synapse.handlers.room_member import RoomMemberHandler, RoomMemberMasterHandler
from synapse.handlers.room_member_worker import RoomMemberWorkerHandler
from synapse.handlers.search import SearchHandler
from synapse.handlers.send_email import SendEmailHandler
from synapse.handlers.set_password import SetPasswordHandler
from synapse.handlers.space_summary import SpaceSummaryHandler
from synapse.handlers.sso import SsoHandler
@ -549,6 +550,10 @@ class HomeServer(metaclass=abc.ABCMeta):
def get_search_handler(self) -> SearchHandler:
return SearchHandler(self)
@cache_in_self
def get_send_email_handler(self) -> SendEmailHandler:
return SendEmailHandler(self)
@cache_in_self
def get_set_password_handler(self) -> SetPasswordHandler:
return SetPasswordHandler(self)