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Posting and fan-out both working

This commit is contained in:
Andrew Godwin 2022-11-11 23:04:43 -07:00
parent feb5d9b74f
commit 8fd5a9292c
11 changed files with 295 additions and 17 deletions
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10
activities/admin.py
View File

@ -1,11 +1,11 @@
from django.contrib import admin
from activities.models import Post, TimelineEvent
from activities.models import FanOut, Post, TimelineEvent
@admin.register(Post)
class PostAdmin(admin.ModelAdmin):
list_display = ["id", "author", "created"]
list_display = ["id", "state", "author", "created"]
raw_id_fields = ["to", "mentions"]
@ -13,3 +13,9 @@ class PostAdmin(admin.ModelAdmin):
class TimelineEventAdmin(admin.ModelAdmin):
list_display = ["id", "identity", "created", "type"]
raw_id_fields = ["identity", "subject_post", "subject_identity"]
@admin.register(FanOut)
class FanOutAdmin(admin.ModelAdmin):
list_display = ["id", "state", "state_attempted", "type", "identity"]
raw_id_fields = ["identity", "subject_post"]

2
activities/migrations/0001_initial.py
View File

@ -28,7 +28,7 @@ class Migration(migrations.Migration):
verbose_name="ID",
),
),
("state_ready", models.BooleanField(default=False)),
("state_ready", models.BooleanField(default=True)),
("state_changed", models.DateTimeField(auto_now_add=True)),
("state_attempted", models.DateTimeField(blank=True, null=True)),
("state_locked_until", models.DateTimeField(blank=True, null=True)),

103
activities/migrations/0002_fan_out.py Normal file
View File

@ -0,0 +1,103 @@
# Generated by Django 4.1.3 on 2022-11-12 05:36
import django.db.models.deletion
import django.utils.timezone
from django.db import migrations, models
import activities.models.fan_out
import stator.models
class Migration(migrations.Migration):
dependencies = [
("users", "0001_initial"),
("activities", "0001_initial"),
]
operations = [
migrations.AddField(
model_name="post",
name="authored",
field=models.DateTimeField(default=django.utils.timezone.now),
),
migrations.AlterField(
model_name="post",
name="author",
field=models.ForeignKey(
on_delete=django.db.models.deletion.PROTECT,
related_name="posts",
to="users.identity",
),
),
migrations.AlterField(
model_name="post",
name="mentions",
field=models.ManyToManyField(
blank=True, related_name="posts_mentioning", to="users.identity"
),
),
migrations.AlterField(
model_name="post",
name="to",
field=models.ManyToManyField(
blank=True, related_name="posts_to", to="users.identity"
),
),
migrations.CreateModel(
name="FanOut",
fields=[
(
"id",
models.BigAutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
("state_ready", models.BooleanField(default=True)),
("state_changed", models.DateTimeField(auto_now_add=True)),
("state_attempted", models.DateTimeField(blank=True, null=True)),
("state_locked_until", models.DateTimeField(blank=True, null=True)),
(
"state",
stator.models.StateField(
choices=[("new", "new"), ("sent", "sent")],
default="new",
graph=activities.models.fan_out.FanOutStates,
max_length=100,
),
),
(
"type",
models.CharField(
choices=[("post", "Post"), ("boost", "Boost")], max_length=100
),
),
("created", models.DateTimeField(auto_now_add=True)),
("updated", models.DateTimeField(auto_now=True)),
(
"identity",
models.ForeignKey(
on_delete=django.db.models.deletion.CASCADE,
related_name="fan_outs",
to="users.identity",
),
),
(
"subject_post",
models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.CASCADE,
related_name="fan_outs",
to="activities.post",
),
),
],
options={
"abstract": False,
},
),
]

1
activities/models/__init__.py
View File

@ -1,2 +1,3 @@
from .fan_out import FanOut # noqa
from .post import Post # noqa
from .timeline_event import TimelineEvent # noqa

81
activities/models/fan_out.py Normal file
View File

@ -0,0 +1,81 @@
from asgiref.sync import sync_to_async
from django.db import models
from activities.models.timeline_event import TimelineEvent
from core.ld import canonicalise
from core.signatures import HttpSignature
from stator.models import State, StateField, StateGraph, StatorModel
class FanOutStates(StateGraph):
new = State(try_interval=300)
sent = State()
new.transitions_to(sent)
@classmethod
async def handle_new(cls, instance: "FanOut"):
"""
Sends the fan-out to the right inbox.
"""
fan_out = await instance.afetch_full()
if fan_out.identity.local:
# Make a timeline event directly
await sync_to_async(TimelineEvent.add_post)(
identity=fan_out.identity,
post=fan_out.subject_post,
)
else:
# Send it to the remote inbox
post = await fan_out.subject_post.afetch_full()
# Sign it and send it
await HttpSignature.signed_request(
uri=fan_out.identity.inbox_uri,
body=canonicalise(post.to_create_ap()),
identity=post.author,
)
return cls.sent
class FanOut(StatorModel):
"""
An activity that needs to get to an inbox somewhere.
"""
class Types(models.TextChoices):
post = "post"
boost = "boost"
state = StateField(FanOutStates)
# The user this event is targeted at
identity = models.ForeignKey(
"users.Identity",
on_delete=models.CASCADE,
related_name="fan_outs",
)
# What type of activity it is
type = models.CharField(max_length=100, choices=Types.choices)
# Links to the appropriate objects
subject_post = models.ForeignKey(
"activities.Post",
on_delete=models.CASCADE,
blank=True,
null=True,
related_name="fan_outs",
)
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
### Async helpers ###
async def afetch_full(self):
"""
Returns a version of the object with all relations pre-loaded
"""
return await FanOut.objects.select_related("identity", "subject_post").aget(
pk=self.pk
)

82
activities/models/post.py
View File

@ -1,8 +1,13 @@
from typing import Dict
import urlman
from django.db import models
from django.utils import timezone
from activities.models.fan_out import FanOut
from activities.models.timeline_event import TimelineEvent
from core.html import sanitize_post
from core.ld import format_date
from stator.models import State, StateField, StateGraph, StatorModel
from users.models.follow import Follow
from users.models.identity import Identity
@ -19,7 +24,8 @@ class PostStates(StateGraph):
"""
Creates all needed fan-out objects for a new Post.
"""
pass
await instance.afan_out()
return cls.fanned_out
class Post(StatorModel):
@ -84,11 +90,21 @@ class Post(StatorModel):
blank=True,
)
# When the post was originally created (as opposed to when we received it)
authored = models.DateTimeField(default=timezone.now)
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
class urls(urlman.Urls):
view = "{self.identity.urls.view}posts/{self.id}/"
view = "{self.author.urls.view}posts/{self.id}/"
object_uri = "{self.author.urls.actor}posts/{self.id}/"
def get_scheme(self, url):
return "https"
def get_hostname(self, url):
return self.instance.author.domain.uri_domain
def __str__(self):
return f"{self.author} #{self.id}"
@ -97,6 +113,16 @@ class Post(StatorModel):
def safe_content(self):
return sanitize_post(self.content)
### Async helpers ###
async def afetch_full(self):
"""
Returns a version of the object with all relations pre-loaded
"""
return await Post.objects.select_related("author", "author__domain").aget(
pk=self.pk
)
### Local creation ###
@classmethod
@ -111,9 +137,57 @@ class Post(StatorModel):
post.save()
return post
### ActivityPub (outgoing) ###
### ActivityPub (outbound) ###
### ActivityPub (incoming) ###
async def afan_out(self):
"""
Creates FanOuts for a new post
"""
# Send a copy to all people who follow this user
post = await self.afetch_full()
async for follow in post.author.inbound_follows.all():
await FanOut.objects.acreate(
identity_id=follow.source_id,
type=FanOut.Types.post,
subject_post=post,
)
# And one for themselves
await FanOut.objects.acreate(
identity_id=post.author_id,
type=FanOut.Types.post,
subject_post=post,
)
def to_ap(self) -> Dict:
"""
Returns the AP JSON for this object
"""
value = {
"type": "Note",
"id": self.object_uri,
"published": format_date(self.created),
"attributedTo": self.author.actor_uri,
"content": self.safe_content,
"to": "as:Public",
"as:sensitive": self.sensitive,
"url": self.urls.view.full(), # type: ignore
}
if self.summary:
value["summary"] = self.summary
return value
def to_create_ap(self):
"""
Returns the AP JSON to create this object
"""
return {
"type": "Create",
"id": self.object_uri + "#create",
"actor": self.author.actor_uri,
"object": self.to_ap(),
}
### ActivityPub (inbound) ###
@classmethod
def by_ap(cls, data, create=False) -> "Post":

7
core/ld.py
View File

@ -1,3 +1,4 @@
import datetime
import urllib.parse as urllib_parse
from typing import Dict, List, Union
@ -273,6 +274,8 @@ schemas = {
},
}
DATETIME_FORMAT = "%Y-%m-%dT%H:%M:%SZ"
def builtin_document_loader(url: str, options={}):
# Get URL without scheme
@ -324,3 +327,7 @@ def canonicalise(json_data: Dict, include_security: bool = False) -> Dict:
json_data["@context"] = context
return jsonld.compact(jsonld.expand(json_data), context)
def format_date(value: datetime.datetime) -> str:
return value.strftime(DATETIME_FORMAT)

4
stator/models.py
View File

@ -45,8 +45,8 @@ class StatorModel(models.Model):
concrete model yourself.
"""
# If this row is up for transition attempts
state_ready = models.BooleanField(default=False)
# If this row is up for transition attempts (which it always is on creation!)
state_ready = models.BooleanField(default=True)
# When the state last actually changed, or the date of instance creation
state_changed = models.DateTimeField(auto_now_add=True)

2
templates/activities/_post.html
View File

@ -8,7 +8,9 @@
{% endif %}
<h3 class="author">
<a href="{{ post.author.urls.view }}">
{{ post.author.name_or_handle }} <small>@{{ post.author.handle }}</small>
</a>
</h3>
<time>
<a href="{{ post.urls.view }}">{{ post.created | timesince }} ago</a>

10
users/migrations/0001_initial.py
View File

@ -92,7 +92,7 @@ class Migration(migrations.Migration):
verbose_name="ID",
),
),
("state_ready", models.BooleanField(default=False)),
("state_ready", models.BooleanField(default=True)),
("state_changed", models.DateTimeField(auto_now_add=True)),
("state_attempted", models.DateTimeField(blank=True, null=True)),
("state_locked_until", models.DateTimeField(blank=True, null=True)),
@ -158,7 +158,7 @@ class Migration(migrations.Migration):
verbose_name="ID",
),
),
("state_ready", models.BooleanField(default=False)),
("state_ready", models.BooleanField(default=True)),
("state_changed", models.DateTimeField(auto_now_add=True)),
("state_attempted", models.DateTimeField(blank=True, null=True)),
("state_locked_until", models.DateTimeField(blank=True, null=True)),
@ -230,7 +230,9 @@ class Migration(migrations.Migration):
(
"users",
models.ManyToManyField(
related_name="identities", to=settings.AUTH_USER_MODEL
blank=True,
related_name="identities",
to=settings.AUTH_USER_MODEL,
),
),
],
@ -286,7 +288,7 @@ class Migration(migrations.Migration):
verbose_name="ID",
),
),
("state_ready", models.BooleanField(default=False)),
("state_ready", models.BooleanField(default=True)),
("state_changed", models.DateTimeField(auto_now_add=True)),
("state_attempted", models.DateTimeField(blank=True, null=True)),
("state_locked_until", models.DateTimeField(blank=True, null=True)),

8
users/views/identity.py
View File

@ -36,12 +36,12 @@ class ViewIdentity(TemplateView):
local=False,
fetch=True,
)
statuses = identity.statuses.all()[:100]
posts = identity.posts.all()[:100]
if identity.data_age > settings.IDENTITY_MAX_AGE:
identity.transition_perform(IdentityStates.outdated)
return {
"identity": identity,
"statuses": statuses,
"posts": posts,
"follow": Follow.maybe_get(self.request.identity, identity)
if self.request.identity
else None,
@ -232,9 +232,11 @@ class Inbox(View):
if not identity.verify_signature(
signature_details["signature"], headers_string
):
print("Bad signature!")
print(document)
return HttpResponseUnauthorized("Bad signature")
# Hand off the item to be processed by the queue
InboxMessage.objects.create(message=document, state_ready=True)
InboxMessage.objects.create(message=document)
return HttpResponse(status=202)