Webhook processing | Django | Page 1

vale shale Sep 28, 2023, 8:49 AM

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I am very much of a beginer and trying to follow django-anymail documentation:
https://anymail.dev/en/stable/quickstart/

Got to a point where I am succesfully sending emails using (sendiblue) and now trying to follow webhook documentation for tracking:
https://anymail.dev/en/stable/sending/tracking/#

I have sucesfully configured webhooks as per here:
https://anymail.dev/en/stable/installation/#webhooks-configuration

On my vercel app I see that I am being hit with successfully to my webhooks:

SEP 28 09:44:52.18
200
django-anymail.vercel.app
[POST] /anymail/sendinblue/tracking/
using Web Server Gateway Interface (WSGI) Message <202309280829.50870869121@smtp-relay.mailin.fr> to dz00nas@gmail.com opened
SEP 28 09:29:51.73
200
django-anymail.vercel.app
[POST] /anymail/sendinblue/tracking/
SEP 28 09:29:51.03
200
django-anymail.vercel.app
[POST] /anymail/sendinblue/tracking/

But now I do not understand how to process these, I tried the following:

I created a new app called emailtracking
created signals.py inside emailtracking folder

from anymail.signals import tracking
from django.dispatch import receiver

@receiver(tracking)  # add weak=False if inside some other function/class
def handle_bounce(sender, event, esp_name, **kwargs):
    if event.event_type == 'bounced':
        print("Message %s to %s bounced" % (
              event.message_id, event.recipient))

@receiver(tracking)  # add weak=False if inside some other function/class
def handle_bounce(sender, event, esp_name, **kwargs):
    if event.event_type == 'sent':
        print("Message %s to %s sent" % (
              event.message_id, event.recipient))

@receiver(tracking)  # add weak=False if inside some other function/class
def handle_bounce(sender, event, esp_name, **kwargs):
    if event.event_type == 'opened':
        print("Message %s to %s opened" % (
              event.message_id, event.recipient))

#

inside emailtracking/app,py

from django.apps import AppConfig

class YourAppConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'emailtracking'

    def ready(self):
        import emailtracking.signals  # Import the signals file

#

inside vercel_app/settings.py

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'example',
    'anymail',
    'emailgenerator',
    'emailtracking'
]

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but I am not getting any print messages in vercel logs or my local running version I think I lack some basic understanding here that is obvious

main pulsar Sep 28, 2023, 8:59 AM

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I'm not familiar with anymail, but could the problem be that you redefine the function?

>>> def foo(): print("hello")
... 
>>> def foo(): print("world")
... 
>>> def foo(): print("last one wins")
... 
>>> foo()
last one wins

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You probably only want one of those def handle_bounce() with checks for different conditions within it...

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@receiver(tracking)  # add weak=False if inside some other function/class
def handle_bounce(sender, event, esp_name, **kwargs):
    if event.event_type == 'bounced':
        print("Message %s to %s bounced" % (
              event.message_id, event.recipient))
    if event.event_type == 'sent':
        print("Message %s to %s sent" % (
              event.message_id, event.recipient))
    if event.event_type == 'opened':
        print("Message %s to %s opened" % (
              event.message_id, event.recipient))

vale shale Sep 28, 2023, 9:28 AM

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@main pulsar https://anymail.dev/en/stable/sending/tracking/ I hope your proposed solution is not the solution otherwise the example given in the documentation would be wrong?

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ill test now

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@main pulsar where am I supposed to see the print? in the local terminal or on vercel? or both?

main pulsar Sep 28, 2023, 9:32 AM

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vale shale <@1137652993609707540> https://anymail.dev/en/stable/sending/tracking/ I hope yo...

Not wrong, though it is a bit weird to me that they have multiple handlers for the same signal. The key difference though is that their handlers have unique names... "handle_bounce" != "handle_click".

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You should see it in Vercel, probably, though I am not familiar with it as I never deployed anything there...

vale shale Sep 28, 2023, 9:35 AM

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ok so that made no difference

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I guess we could get rid of event.event_type == over all

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and see if anything is getting triggered at all

main pulsar Sep 28, 2023, 9:36 AM

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You can just add a print() at the top of the function, before the ifs

vale shale Sep 28, 2023, 9:36 AM

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how could we fire a print command from there manually from that app so at least I could test if I can see that in vercel

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so gonna try this

@receiver(tracking)  # add weak=False if inside some other function/class
def handle_bounce(sender, event, esp_name, **kwargs):
    print("testing")
    if event.event_type == 'bounced':
        print("Message %s to %s bounced" % (
              event.message_id, event.recipient))
    if event.event_type == 'sent':
        print("Message %s to %s sent" % (
              event.message_id, event.recipient))
    if event.event_type == 'opened':
        print("Message %s to %s opened" % (
              event.message_id, event.recipient))

main pulsar Sep 28, 2023, 9:38 AM

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Probably a good idea to rename the function too, since it handles different webhook events, not just bounced mail, but that's more of a stylistic issue than cause for concern.

vale shale Sep 28, 2023, 9:38 AM

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sure

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is there any way I could do some sort of timed print?

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so it just keeps firing from that app?

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so I could rule out that the app is connected right?

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just have to make sure I am not doing some basic beginer mistakes too

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oh the testing print works

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ok so it's the event type

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I could just print the event and see whats happening inside of it right?

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wooohooo

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rubba ducka debugging is dank

main pulsar Sep 28, 2023, 9:42 AM

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Timed, not easily... you can put it before the function definition so it prints when the file is imported and the function is defined rather than called.

vale shale Sep 28, 2023, 9:42 AM

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alright ill keep that in mind if I doubt myself again

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but it seems that I have done everything right

main pulsar Sep 28, 2023, 9:43 AM

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And yeah, I was gonna suggest you replace print("testing") with print(f"received event {event.event_type}") or something 😄

vale shale Sep 28, 2023, 9:43 AM

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I think event type does not exist at all

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ill try printing the whole event

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I feel that there will be something unfinished/not workign here with sendiblue

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oh jesus

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I need to stop calling it

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sendiblue

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django-anymail[sendiblue]

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it is missing and n

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sendinblue it should be

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and I think I am basically missing packages

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I discovered the missing n on webhook yesterday

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too

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so now we know

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let me see what happens

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do I need to do { } inside of print? that stringify's it?

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if I just do plain print(event) I wont see it?

main pulsar Sep 28, 2023, 9:50 AM

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print(event) should work

vale shale Sep 28, 2023, 9:50 AM

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hmm but I cant read what is inside of it then

main pulsar Sep 28, 2023, 9:50 AM

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I just wrote an f-string...

vale shale Sep 28, 2023, 9:50 AM

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<anymail.signals.AnymailTrackingEvent object at 0x7f71e7a0da90>

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I just get this

main pulsar Sep 28, 2023, 9:51 AM

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You can try print(str(event))

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But depending on the __str__(self) method definition, it may not help much 😄

vale shale Sep 28, 2023, 9:51 AM

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hmm ok let me give it a try

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same result
<anymail.signals.AnymailTrackingEvent object at 0x7f179a29d2e0>

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let me just do the event.type then

main pulsar Sep 28, 2023, 9:55 AM

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Mess around with it until you get to the good stuff 🙂

vale shale Sep 28, 2023, 9:55 AM

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ok delivered and queeud

main pulsar Sep 28, 2023, 9:55 AM

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print(dir(event))

vale shale Sep 28, 2023, 9:55 AM

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are the first two types

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ill try dir thank you

main pulsar Sep 28, 2023, 9:55 AM

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Yeah, you don't handle those.

vale shale Sep 28, 2023, 9:56 AM

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wait

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so if I have 2 prints in the same function they are merged into one console log?

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SEP 28 10:54:57.98
200
django-anymail.vercel.app
[POST] /anymail/sendinblue/tracking/
opened Message <202309280952.34298647574@smtp-relay.mailin.fr> to dz00nas@gmail.com opened
SEP 28 10:54:31.26
200
django-anymail.vercel.app
[POST] /anymail/sendinblue/tracking/
delivered
SEP 28 10:54:29.24
200
django-anymail.vercel.app
[POST] /anymail/sendinblue/tracking/
queued

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so I was getting opened before

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but now its opened + Message 202309280952.34298647574@smtp-relay.mailin.fr to dz00nas@gmail.com opened

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because the first print

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yeah somehow weirdly I think they got merged

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thats sooooo weird

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but ok

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ok ok ok ok

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so we are printing in the console

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that is it I am all goo

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good

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and I always was good

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it was just that few event types were not right

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so now I just need to process these signals

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and store them in my database

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and badabim badabum

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one quick question

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so I was thinking actually

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I am so used to firebase / angular

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and I have seen django firebase integration floating around

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that way this is just a backend service processing all this email stuff

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and storing it into my firebase database

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from there I feel like I am back at home

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when it comes to frontend

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or am I supposed to do all the templating in the django app?

main pulsar Sep 28, 2023, 10:00 AM

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Not entirely sure I understand...

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You can not use Django's template system at all if you don't want to.

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You can use Django-Rest-Framework or GraphQL to write APIs.

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And have an SPA written in Angular, or Vue, or Svelte and consume the API.

vale shale Sep 28, 2023, 10:02 AM

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alternative to that is to use django templating

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there is no way to substitute django templating with angulars right? you have to always do this creation of API and then consuming it in the frontend at that point

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awww maaan now I gotta learn graphQL

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this never stops LOL

main pulsar Sep 28, 2023, 10:04 AM

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Ehh... there are, but it sounded messy to me so I never bothered with it 😄

vale shale Sep 28, 2023, 10:04 AM

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ahh ok

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yeah I think it would be messy too

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the backend/frontend seperation sounds good

main pulsar Sep 28, 2023, 10:04 AM

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If you can build custom web components using angular, maybe you can use those...

vale shale Sep 28, 2023, 10:05 AM

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plus at that point the backends are isolated

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you can have multiples

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acting as services

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I guess this is that microservice memery?

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as in I can use same backend against multiple different frontends for that specific task

main pulsar Sep 28, 2023, 10:05 AM

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{% extends "base.html" %}
{% block content %}
<angular-component></angular-component>
{% endblock %}

vale shale Sep 28, 2023, 10:06 AM

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yikes

main pulsar Sep 28, 2023, 10:06 AM

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Unrelated to microservices. It's just a decoupled architecture.

vale shale Sep 28, 2023, 10:06 AM

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what is a microservice then?

main pulsar Sep 28, 2023, 10:06 AM

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Which is useful if you decide to write a native Android app in Kotlin to access the same API.

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Usually extra back-end services running in different environments.

vale shale Sep 28, 2023, 10:07 AM

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oh yeah

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because why the hell would you run a monolith like django as microservice I guess this is where smaller libraties like flask are used

main pulsar Sep 28, 2023, 10:08 AM

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If you look at e.g. youtube, when you upload a video, a few services start up.

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One to transcode it to different resolutions, one to check for copyrighted audio, one to use ML/AI to generate subtitles, etc.

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You can run multiple Django apps as microservices (though I guess they are not exactly micro 😄 ), or have microservices that work with Django, too.

vale shale Sep 28, 2023, 10:10 AM

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ok

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MACROSERVICE

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DJANGO EMAIL PROCCESING

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MADE BY HEXAS

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loololol

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ok thank you theepicdev

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have a nice day

main pulsar Sep 28, 2023, 10:11 AM

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You too 🙂

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I need more coffee first 😅

vale shale Sep 28, 2023, 10:11 AM

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sameeee

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and a banana

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for sugar

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code monkey loves his bananas

main pulsar Sep 28, 2023, 10:12 AM

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Literally was thinking the same.

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https://tenor.com/view/banana-bananas-gif-26225960

Tenor

vale shale Sep 28, 2023, 10:12 AM

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ancient memes

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I love it

main pulsar Sep 28, 2023, 10:13 AM

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I am a dinosaur in computing years

vale shale Sep 28, 2023, 10:13 AM

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I have been there

main pulsar Sep 28, 2023, 10:13 AM

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I have this beautiful old-school gif on my server... https://theepic.dev/kb/

vale shale Sep 28, 2023, 10:13 AM

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garrys mod

main pulsar Sep 28, 2023, 10:13 AM

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I need to add it to the 404 page

vale shale Sep 28, 2023, 10:13 AM

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peanut butter jelly time

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2008 youtube was wild

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or maybe even 2006 not even sure anymore

vale shale Sep 28, 2023, 10:15 AM

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main pulsar I have this beautiful old-school gif on my server... https://theepic.dev/kb/

ok now this is wild

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a true backend developer vision of a frontend for sure

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now lets see paul allens card

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https://hexas.co.uk/

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main pulsar Sep 28, 2023, 10:17 AM

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Sweet

vale shale Sep 28, 2023, 10:17 AM

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https://www.youtube.com/shorts/mMBLJdqaC3A

YouTube

BAN.MAN_

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▶ Play video

#Webhook processing