social/mail_tracking_mailgun/models/mail_tracking_email.py
Jairo Llopis 99836513b9 [IMP] mail_tracking_mailgun: refactor to support modern webhooks
Before this patch, the module was designed after the [deprecated Mailgun webhooks][3]. However Mailgun had the [events API][2] which was quite different. Modern Mailgun has deprecated those webhooks and instead uses new ones that include the same payload as the events API, so you can reuse code.

However, this was incorrectly reusing the code inversely: trying to process the events API through the same code prepared for the deprecated webhooks.

Besides, both `failed` and `rejected` mailgun events were mapped to `error` state, but that was also wrong because [`mail_tracking` doesn't have an `error` state][1].

So the logic of the whole module is changed, adapting it to process the events API payload, both through controllers (prepared for the new webhooks) and manual updates that directly call the events API.

Also, `rejected` is now translated into `reject`, and `failed` is translated into `hard_bounce` or `soft_bounce` depending on the severity, as specified by [mailgun docs][2]. Also, `bounced` and `dropped` mailgun states are removed because they don't exist, and instead `failed` and `rejected` properly get their metadata.

Of course, to know the severity, now the method to obtain that info must change, it' can't be a simple dict anymore.

Added more parameters because for example modern Mailgun uses different keys for signing payload than for accessing the API. As there are so many parameters, configuration is now possible through `res.config.settings`. Go there to autoregister webhooks too.

Since the new webhooks are completely incompatible with the old supposedly-abstract webhooks controllers (that were never really that abstract), support for old webhooks is removed, and it will be removed in the future from `mail_tracking` directly. There is a migration script that attempts to unregister old webhooks and register new ones automatically.

[1]: f73de421e2/mail_tracking/models/mail_tracking_event.py (L31-L42)
[2]: https://documentation.mailgun.com/en/latest/api-events.html#event-types
[3]: https://documentation.mailgun.com/en/latest/api-webhooks-deprecated.html
2022-05-17 17:16:14 -03:00

238 lines
8.4 KiB
Python

# Copyright 2016 Tecnativa - Antonio Espinosa
# Copyright 2017 Tecnativa - David Vidal
# Copyright 2021 Tecnativa - Jairo Llopis
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
import logging
from collections import namedtuple
from datetime import datetime
from urllib.parse import urljoin
import requests
from odoo import _, api, fields, models
from odoo.exceptions import UserError, ValidationError
from odoo.tools import email_split
_logger = logging.getLogger(__name__)
MailgunParameters = namedtuple(
"MailgunParameters",
(
"api_key",
"api_url",
"domain",
"validation_key",
"webhooks_domain",
"webhook_signing_key",
),
)
class EventNotFoundWarning(Warning):
pass
class MailTrackingEmail(models.Model):
_inherit = "mail.tracking.email"
def _country_search(self, country_code):
country = False
if country_code:
country = self.env["res.country"].search(
[("code", "=", country_code.upper())]
)
if country:
return country.id
return False
@api.model
def _mailgun_event2type(self, event, default="UNKNOWN"):
"""Return the ``mail.tracking.event`` equivalent event
Args:
event: Mailgun event response from API.
default: Value to return when not found.
"""
# Mailgun event type: tracking event type
equivalents = {
"delivered": "delivered",
"opened": "open",
"clicked": "click",
"unsubscribed": "unsub",
"complained": "spam",
"accepted": "sent",
"failed": (
"hard_bounce" if event.get("severity") == "permanent" else "soft_bounce"
),
"rejected": "reject",
}
return equivalents.get(event.get("event"), default)
@api.model
def _mailgun_values(self):
icp = self.env["ir.config_parameter"].sudo()
api_key = icp.get_param("mailgun.apikey")
if not api_key:
raise ValidationError(_("There is no Mailgun API key!"))
api_url = icp.get_param("mailgun.api_url", "https://api.mailgun.net/v3")
catchall_domain = icp.get_param("mail.catchall.domain")
domain = icp.get_param("mailgun.domain", catchall_domain)
if not domain:
raise ValidationError(_("A Mailgun domain value is needed!"))
validation_key = icp.get_param("mailgun.validation_key")
web_base_url = icp.get_param("web.base.url")
webhooks_domain = icp.get_param("mailgun.webhooks_domain", web_base_url)
webhook_signing_key = icp.get_param("mailgun.webhook_signing_key")
return MailgunParameters(
api_key,
api_url,
domain,
validation_key,
webhooks_domain,
webhook_signing_key,
)
def _mailgun_metadata(self, mailgun_event_type, event, metadata):
# Get Mailgun timestamp when found
ts = event.get("timestamp", False)
try:
ts = float(ts)
except Exception:
ts = False
if ts:
dt = datetime.utcfromtimestamp(ts)
metadata.update(
{
"timestamp": ts,
"time": fields.Datetime.to_string(dt),
"date": fields.Date.to_string(dt),
"mailgun_id": event.get("id", False),
}
)
# Common field mapping
mapping = {
"recipient": "recipient",
"ip": "ip",
"user_agent": "user-agent",
"os_family": "client-os",
"ua_family": "client-name",
"ua_type": "client-type",
"url": "url",
}
for k, v in mapping.items():
if event.get(v, False):
metadata[k] = event[v]
# Special field mapping
metadata.update(
{
"mobile": event.get("device-type") in {"mobile", "tablet"},
"user_country_id": self._country_search(event.get("country", False)),
}
)
# Mapping for special events
if mailgun_event_type == "failed":
delivery_status = event.get("delivery-status", {})
metadata.update(
{
"error_type": delivery_status.get("code", False),
"error_description": delivery_status.get("message", False),
"error_details": delivery_status.get("description", False),
}
)
elif mailgun_event_type == "rejected":
reject = event.get("reject", {})
metadata.update(
{
"error_type": "rejected",
"error_description": reject.get("reason", False),
"error_details": reject.get("description", False),
}
)
elif mailgun_event_type == "complained":
metadata.update(
{
"error_type": "spam",
"error_description": "Recipient '%s' mark this email as spam"
% event.get("recipient", False),
}
)
return metadata
@api.model
def _mailgun_event_process(self, event_data, metadata):
"""Retrieve (and maybe create) mailgun event from API data payload.
In https://documentation.mailgun.com/en/latest/api-events.html#event-structure
you can read the event payload format as obtained from webhooks or calls to API.
"""
if event_data["user-variables"]["odoo_db"] != self.env.cr.dbname:
raise ValidationError(_("Wrong database for event!"))
# Do nothing if event was already processed
mailgun_id = event_data["id"]
db_event = self.env["mail.tracking.event"].search(
[("mailgun_id", "=", mailgun_id)], limit=1
)
if db_event:
_logger.debug("Mailgun event already found in DB: %s", mailgun_id)
return db_event
# Do nothing if tracking email for event is not found
message_id = event_data["message"]["headers"]["message-id"]
recipient = event_data["recipient"]
tracking_email = self.browse(
int(event_data["user-variables"]["tracking_email_id"])
)
mailgun_event_type = event_data["event"]
# Process event
state = self._mailgun_event2type(event_data, mailgun_event_type)
metadata = self._mailgun_metadata(mailgun_event_type, event_data, metadata)
_logger.info(
"Importing mailgun event %s (%s message %s for %s)",
mailgun_id,
mailgun_event_type,
message_id,
recipient,
)
tracking_email.event_create(state, metadata)
def action_manual_check_mailgun(self):
"""Manual check against Mailgun API
API Documentation:
https://documentation.mailgun.com/en/latest/api-events.html
"""
api_key, api_url, domain, *__ = self._mailgun_values()
for tracking in self:
if not tracking.mail_message_id:
raise UserError(_("There is no tracked message!"))
message_id = tracking.mail_message_id.message_id.replace("<", "").replace(
">", ""
)
events = []
url = urljoin(api_url, "/v3/%s/events" % domain)
params = {
"begin": tracking.timestamp,
"ascending": "yes",
"message-id": message_id,
"recipient": email_split(tracking.recipient)[0],
}
while url:
res = requests.get(
url,
auth=("api", api_key),
params=params,
)
if not res or res.status_code != 200:
raise UserError(_("Couldn't retrieve Mailgun information"))
iter_events = res.json().get("items", [])
if not iter_events:
# Loop no more
break
events.extend(iter_events)
# Loop over pagination
url = res.json().get("paging", {}).get("next")
if not events:
raise UserError(_("Event information not longer stored"))
for event in events:
self.sudo()._mailgun_event_process(event, {})