app-MAIL-temp/app/events/event_dispatcher.py

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from abc import ABC, abstractmethod
import newrelic.agent
from app import config
from app.db import Session
from app.errors import ProtonPartnerNotSetUp
from app.events.generated import event_pb2
from app.log import LOG
from app.models import User, PartnerUser, SyncEvent
from app.proton.utils import get_proton_partner
from typing import Optional
NOTIFICATION_CHANNEL = "simplelogin_sync_events"
class Dispatcher(ABC):
@abstractmethod
def send(self, event: bytes):
pass
class PostgresDispatcher(Dispatcher):
def send(self, event: bytes):
instance = SyncEvent.create(content=event, flush=True)
Session.execute(f"NOTIFY {NOTIFICATION_CHANNEL}, '{instance.id}';")
@staticmethod
def get():
return PostgresDispatcher()
class GlobalDispatcher:
__dispatcher: Optional[Dispatcher] = None
@staticmethod
def get_dispatcher() -> Dispatcher:
if not GlobalDispatcher.__dispatcher:
GlobalDispatcher.__dispatcher = PostgresDispatcher.get()
return GlobalDispatcher.__dispatcher
@staticmethod
def set_dispatcher(dispatcher: Optional[Dispatcher]):
GlobalDispatcher.__dispatcher = dispatcher
class EventDispatcher:
@staticmethod
def send_event(
user: User,
content: event_pb2.EventContent,
dispatcher: Optional[Dispatcher] = None,
skip_if_webhook_missing: bool = True,
):
if dispatcher is None:
dispatcher = GlobalDispatcher.get_dispatcher()
if config.EVENT_WEBHOOK_DISABLE:
LOG.i("Not sending events because webhook is disabled")
return
if not config.EVENT_WEBHOOK and skip_if_webhook_missing:
LOG.i(
"Not sending events because webhook is not configured and allowed to be empty"
)
return
partner_user = EventDispatcher.__partner_user(user.id)
if not partner_user:
LOG.i(f"Not sending events because there's no partner user for user {user}")
return
event = event_pb2.Event(
user_id=user.id,
external_user_id=partner_user.external_user_id,
partner_id=partner_user.partner_id,
content=content,
)
serialized = event.SerializeToString()
dispatcher.send(serialized)
event_type = content.WhichOneof("content")
newrelic.agent.record_custom_event("EventStoredToDb", {"type": event_type})
LOG.i("Sent event to the dispatcher")
@staticmethod
def __partner_user(user_id: int) -> Optional[PartnerUser]:
# Check if the current user has a partner_id
try:
proton_partner_id = get_proton_partner().id
except ProtonPartnerNotSetUp:
return None
# It has. Retrieve the information for the PartnerUser
return PartnerUser.get_by(user_id=user_id, partner_id=proton_partner_id)