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Start support for deleting remote actors

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This commit is contained in:
Thomas Sileo 2022-08-17 21:18:07 +02:00
parent 02c09f2363
commit e3a02a8138
4 changed files with 158 additions and 18 deletions
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32
alembic/versions/2022_08_17_1758-5d3e3f2b9b4e_add_actor_is_deleted.py Normal file
View file

@ -0,0 +1,32 @@
"""Add Actor.is_deleted
Revision ID: 5d3e3f2b9b4e
Revises: 6286262bb466
Create Date: 2022-08-17 17:58:24.813194+00:00
"""
import sqlalchemy as sa
from alembic import op
# revision identifiers, used by Alembic.
revision = '5d3e3f2b9b4e'
down_revision = '6286262bb466'
branch_labels = None
depends_on = None
def upgrade() -> None:
# ### commands auto generated by Alembic - please adjust! ###
with op.batch_alter_table('actor', schema=None) as batch_op:
batch_op.add_column(sa.Column('is_deleted', sa.Boolean(), server_default='0', nullable=False))
# ### end Alembic commands ###
def downgrade() -> None:
# ### commands auto generated by Alembic - please adjust! ###
with op.batch_alter_table('actor', schema=None) as batch_op:
batch_op.drop_column('is_deleted')
# ### end Alembic commands ###

5
app/actor.py
View file

@ -176,7 +176,10 @@ async def fetch_actor(
existing_actor = (
await db_session.scalars(
select(models.Actor).where(models.Actor.ap_id == actor_id)
select(models.Actor).where(
models.Actor.ap_id == actor_id,
models.Actor.is_deleted.is_(False),
)
)
).one_or_none()
if existing_actor:

138
app/boxes.py
View file

@ -839,7 +839,7 @@ async def _handle_delete_activity(
db_session: AsyncSession,
from_actor: models.Actor,
delete_activity: models.InboxObject,
ap_object_to_delete: models.InboxObject | None,
ap_object_to_delete: models.InboxObject | models.Actor | None,
forwarded_by_actor: models.Actor | None,
) -> None:
if ap_object_to_delete is None:
@ -847,24 +847,77 @@ async def _handle_delete_activity(
"Received Delete for an unknown object "
f"{delete_activity.activity_object_ap_id}"
)
# TODO(tsileo): support deleting actor
return
if from_actor.ap_id != ap_object_to_delete.actor.ap_id:
logger.warning(
"Actor mismatch between the activity and the object: "
f"{from_actor.ap_id}/{ap_object_to_delete.actor.ap_id}"
if isinstance(ap_object_to_delete, models.InboxObject):
if from_actor.ap_id != ap_object_to_delete.actor.ap_id:
logger.warning(
"Actor mismatch between the activity and the object: "
f"{from_actor.ap_id}/{ap_object_to_delete.actor.ap_id}"
)
return
logger.info(
f"Deleting {ap_object_to_delete.ap_type}/{ap_object_to_delete.ap_id}"
)
return
await _revert_side_effect_for_deleted_object(
db_session,
delete_activity,
ap_object_to_delete,
forwarded_by_actor,
)
ap_object_to_delete.is_deleted = True
elif isinstance(ap_object_to_delete, models.Actor):
if from_actor.ap_id != ap_object_to_delete.ap_id:
logger.warning(
"Actor mismatch between the activity and the object: "
f"{from_actor.ap_id}/{ap_object_to_delete.ap_id}"
)
return
logger.info(f"Deleting {ap_object_to_delete.ap_type}/{ap_object_to_delete.ap_id}")
await _revert_side_effect_for_deleted_object(
db_session,
delete_activity,
ap_object_to_delete,
forwarded_by_actor,
)
ap_object_to_delete.is_deleted = True
logger.info(f"Deleting actor {ap_object_to_delete.ap_id}")
follower = (
await db_session.scalars(
select(models.Follower).where(
models.Follower.ap_actor_id == ap_object_to_delete.ap_id,
)
)
).one_or_none()
if follower:
logger.info("Removing actor from follower")
await db_session.delete(follower)
following = (
await db_session.scalars(
select(models.Following).where(
models.Following.ap_actor_id == ap_object_to_delete.ap_id,
)
)
).one_or_none()
if following:
logger.info("Removing actor from following")
await db_session.delete(following)
# Mark the actor as deleted
ap_object_to_delete.is_deleted = True
inbox_objects = (
await db_session.scalars(
select(models.InboxObject).where(
models.InboxObject.actor_id == ap_object_to_delete.id,
models.InboxObject.is_deleted.is_(False),
)
)
).all()
logger.info(f"Deleting {len(inbox_objects)} objects")
for inbox_object in inbox_objects:
await _revert_side_effect_for_deleted_object(
db_session,
delete_activity,
inbox_object,
forwarded_by_actor=None,
)
inbox_object.is_deleted = True
await db_session.flush()
@ -905,6 +958,38 @@ async def _revert_side_effect_for_deleted_object(
.values(replies_count=models.InboxObject.replies_count - 1)
)
if deleted_ap_object.ap_type == "Like" and deleted_ap_object.activity_object_ap_id:
related_object = await get_outbox_object_by_ap_id(
db_session,
deleted_ap_object.activity_object_ap_id,
)
if related_object:
if related_object.is_from_outbox:
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.id == related_object.id,
)
.values(likes_count=models.OutboxObject.likes_count - 1)
)
elif (
deleted_ap_object.ap_type == "Annouce"
and deleted_ap_object.activity_object_ap_id
):
related_object = await get_outbox_object_by_ap_id(
db_session,
deleted_ap_object.activity_object_ap_id,
)
if related_object:
if related_object.is_from_outbox:
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.id == related_object.id,
)
.values(announces_count=models.OutboxObject.announces_count - 1)
)
# Delete any Like/Announce
await db_session.execute(
update(models.OutboxObject)
@ -916,7 +1001,11 @@ async def _revert_side_effect_for_deleted_object(
# If it's a local replies, it was forwarded, so we also need to forward
# the Delete activity if possible
if delete_activity.has_ld_signature and is_delete_needs_to_be_forwarded:
if (
delete_activity.activity_object_ap_id == deleted_ap_object.ap_id
and delete_activity.has_ld_signature
and is_delete_needs_to_be_forwarded
):
logger.info("Forwarding Delete activity as it's a local reply")
# Don't forward to the forwarding actor and the original Delete actor
@ -1638,11 +1727,26 @@ async def save_to_inbox(
elif activity_ro.ap_type == "Move":
await _handle_move_activity(db_session, actor, inbox_object)
elif activity_ro.ap_type == "Delete":
object_to_delete: models.InboxObject | models.Actor | None
if relates_to_inbox_object:
object_to_delete = relates_to_inbox_object
elif inbox_object.activity_object_ap_id:
# If it's not a Delete for an inbox object, it may be related to
# an actor
try:
object_to_delete = await fetch_actor(
db_session,
inbox_object.activity_object_ap_id,
save_if_not_found=False,
)
except ap.ObjectNotFoundError:
pass
await _handle_delete_activity(
db_session,
actor,
inbox_object,
relates_to_inbox_object,
object_to_delete,
forwarded_by_actor=forwarded_by_actor,
)
elif activity_ro.ap_type == "Follow":

1
app/models.py
View file

@ -52,6 +52,7 @@ class Actor(Base, BaseActor):
handle = Column(String, nullable=True, index=True)
is_blocked = Column(Boolean, nullable=False, default=False, server_default="0")
is_deleted = Column(Boolean, nullable=False, default=False, server_default="0")
@property
def is_from_db(self) -> bool: