611 lines
21 KiB
Python
611 lines
21 KiB
Python
import logging
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from datetime import datetime
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from typing import Any
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from typing import Dict
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from typing import List
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from typing import Optional
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from typing import Union
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from bson.objectid import ObjectId
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from feedgen.feed import FeedGenerator
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from html2text import html2text
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import tasks
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from config import BASE_URL
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from config import DB
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from config import ID
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from config import ME
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from config import USER_AGENT
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from config import USERNAME
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from little_boxes import activitypub as ap
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from little_boxes.backend import Backend
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from little_boxes.collection import parse_collection as ap_parse_collection
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from little_boxes.errors import Error
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logger = logging.getLogger(__name__)
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def _remove_id(doc: ap.ObjectType) -> ap.ObjectType:
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"""Helper for removing MongoDB's `_id` field."""
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doc = doc.copy()
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if "_id" in doc:
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del (doc["_id"])
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return doc
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def _to_list(data: Union[List[Any], Any]) -> List[Any]:
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"""Helper to convert fields that can be either an object or a list of objects to a list of object."""
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if isinstance(data, list):
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return data
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return [data]
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def ensure_it_is_me(f):
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"""Method decorator used to track the events fired during tests."""
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def wrapper(*args, **kwargs):
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if args[1].id != ME["id"]:
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raise Error("unexpected actor")
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return f(*args, **kwargs)
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return wrapper
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class MicroblogPubBackend(Backend):
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"""Implements a Little Boxes backend, backed by MongoDB."""
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def user_agent(self) -> str:
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"""Setup a custom user agent."""
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return USER_AGENT
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def base_url(self) -> str:
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"""Base URL config."""
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return BASE_URL
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def activity_url(self, obj_id):
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"""URL for activity link."""
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# FIXME(tsileo): what about note `url`?
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return f"{BASE_URL}/outbox/{obj_id}"
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@ensure_it_is_me
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def outbox_new(self, as_actor: ap.Person, activity: ap.BaseActivity) -> None:
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DB.outbox.insert_one(
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{
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"activity": activity.to_dict(),
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"type": activity.type,
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"remote_id": activity.id,
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"meta": {"undo": False, "deleted": False},
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}
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)
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@ensure_it_is_me
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def outbox_is_blocked(self, as_actor: ap.Person, actor_id: str) -> bool:
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return bool(
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DB.outbox.find_one(
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{
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"type": ap.ActivityType.BLOCK.value,
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"activity.object": actor_id,
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"meta.undo": False,
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}
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)
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)
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def fetch_iri(self, iri: str) -> ap.ObjectType:
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if iri == ME["id"]:
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return ME
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# Check if the activity is owned by this server
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if iri.startswith(BASE_URL):
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is_a_note = False
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if iri.endswith("/activity"):
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iri = iri.replace("/activity", "")
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is_a_note = True
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data = DB.outbox.find_one({"remote_id": iri})
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if data:
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if is_a_note:
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return data["activity"]["object"]
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return data["activity"]
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else:
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# Check if the activity is stored in the inbox
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data = DB.inbox.find_one({"remote_id": iri})
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if data:
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return data["activity"]
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# Fetch the URL via HTTP
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return super().fetch_iri(iri)
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@ensure_it_is_me
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def inbox_check_duplicate(self, as_actor: ap.Person, iri: str) -> bool:
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return bool(DB.inbox.find_one({"remote_id": iri}))
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@ensure_it_is_me
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def inbox_new(self, as_actor: ap.Person, activity: ap.BaseActivity) -> None:
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DB.inbox.insert_one(
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{
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"activity": activity.to_dict(),
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"type": activity.type,
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"remote_id": activity.id,
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"meta": {"undo": False, "deleted": False},
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}
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)
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@ensure_it_is_me
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def post_to_remote_inbox(self, as_actor: ap.Person, payload: str, to: str) -> None:
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tasks.post_to_inbox.delay(payload, to)
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@ensure_it_is_me
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def new_follower(self, as_actor: ap.Person, follow: ap.Follow) -> None:
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remote_actor = follow.get_actor().id
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if DB.followers.find({"remote_actor": remote_actor}).count() == 0:
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DB.followers.insert_one({"remote_actor": remote_actor})
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@ensure_it_is_me
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def undo_new_follower(self, as_actor: ap.Person, follow: ap.Follow) -> None:
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# TODO(tsileo): update the follow to set undo
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DB.followers.delete_one({"remote_actor": follow.get_actor().id})
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@ensure_it_is_me
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def undo_new_following(self, as_actor: ap.Person, follow: ap.Follow) -> None:
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# TODO(tsileo): update the follow to set undo
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DB.following.delete_one({"remote_actor": follow.get_object().id})
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@ensure_it_is_me
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def new_following(self, as_actor: ap.Person, follow: ap.Follow) -> None:
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remote_actor = follow.get_object().id
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if DB.following.find({"remote_actor": remote_actor}).count() == 0:
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DB.following.insert_one({"remote_actor": remote_actor})
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@ensure_it_is_me
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def inbox_like(self, as_actor: ap.Person, like: ap.Like) -> None:
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obj = like.get_object()
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# Update the meta counter if the object is published by the server
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DB.outbox.update_one(
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{"activity.object.id": obj.id}, {"$inc": {"meta.count_like": 1}}
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)
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@ensure_it_is_me
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def inbox_undo_like(self, as_actor: ap.Person, like: ap.Like) -> None:
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obj = like.get_object()
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# Update the meta counter if the object is published by the server
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DB.outbox.update_one(
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{"activity.object.id": obj.id}, {"$inc": {"meta.count_like": -1}}
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)
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@ensure_it_is_me
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def outbox_like(self, as_actor: ap.Person, like: ap.Like) -> None:
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obj = like.get_object()
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# Unlikely, but an actor can like it's own post
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DB.outbox.update_one(
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{"activity.object.id": obj.id}, {"$inc": {"meta.count_like": 1}}
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)
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# Keep track of the like we just performed
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DB.inbox.update_one(
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{"activity.object.id": obj.id}, {"$set": {"meta.liked": like.id}}
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)
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@ensure_it_is_me
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def outbox_undo_like(self, as_actor: ap.Person, like: ap.Like) -> None:
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obj = like.get_object()
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# Unlikely, but an actor can like it's own post
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DB.outbox.update_one(
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{"activity.object.id": obj.id}, {"$inc": {"meta.count_like": -1}}
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)
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DB.inbox.update_one(
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{"activity.object.id": obj.id}, {"$set": {"meta.liked": False}}
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)
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@ensure_it_is_me
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def inbox_announce(self, as_actor: ap.Person, announce: ap.Announce) -> None:
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if isinstance(announce._data["object"], str) and not announce._data[
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"object"
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].startswith("http"):
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# TODO(tsileo): actually drop it without storing it and better logging, also move the check somewhere else
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logger.warn(
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f'received an Annouce referencing an OStatus notice ({announce._data["object"]}), dropping the message'
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)
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return
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# FIXME(tsileo): Save/cache the object, and make it part of the stream so we can fetch it
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if isinstance(announce._data["object"], str):
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obj_iri = announce._data["object"]
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else:
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obj_iri = self.get_object().id
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DB.outbox.update_one(
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{"activity.object.id": obj_iri}, {"$inc": {"meta.count_boost": 1}}
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)
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@ensure_it_is_me
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def inbox_undo_announce(self, as_actor: ap.Person, announce: ap.Announce) -> None:
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obj = announce.get_object()
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# Update the meta counter if the object is published by the server
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DB.outbox.update_one(
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{"activity.object.id": obj.id}, {"$inc": {"meta.count_boost": -1}}
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)
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@ensure_it_is_me
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def outbox_announce(self, as_actor: ap.Person, announce: ap.Announce) -> None:
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obj = announce.get_object()
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DB.inbox.update_one(
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{"activity.object.id": obj.id}, {"$set": {"meta.boosted": announce.id}}
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)
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@ensure_it_is_me
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def outbox_undo_announce(self, as_actor: ap.Person, announce: ap.Announce) -> None:
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obj = announce.get_object()
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DB.inbox.update_one(
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{"activity.object.id": obj.id}, {"$set": {"meta.boosted": False}}
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)
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@ensure_it_is_me
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def inbox_delete(self, as_actor: ap.Person, delete: ap.Delete) -> None:
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if not DB.inbox.find_one_and_update(
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{"activity.object.id": delete.get_object().id},
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{"$set": {"meta.deleted": True}},
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):
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DB.threads.update_one(
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{"activity.object.id": delete.get_object().id},
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{"$set": {"meta.deleted": True}},
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)
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obj = delete.get_object()
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if obj.ACTIVITY_TYPE != ap.ActivityType.NOTE:
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obj = ap.parse_activity(
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DB.inbox.find_one(
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{
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"activity.object.id": delete.get_object().id,
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"type": ap.ActivityType.CREATE.value,
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}
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)["activity"]
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).get_object()
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logger.info(f"inbox_delete handle_replies obj={obj!r}")
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if obj:
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self._handle_replies_delete(as_actor, obj)
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# FIXME(tsileo): handle threads
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# obj = delete._get_actual_object()
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# if obj.type_enum == ActivityType.NOTE:
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# obj._delete_from_threads()
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# TODO(tsileo): also purge the cache if it's a reply of a published activity
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@ensure_it_is_me
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def outbox_delete(self, as_actor: ap.Person, delete: ap.Delete) -> None:
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DB.outbox.update_one(
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{"activity.object.id": delete.get_object().id},
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{"$set": {"meta.deleted": True}},
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)
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obj = delete.get_object()
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if delete.get_object().ACTIVITY_TYPE != ap.ActivityType.NOTE:
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obj = ap.parse_activity(
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DB.outbox.find_one(
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{
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"activity.object.id": delete.get_object().id,
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"type": ap.ActivityType.CREATE.value,
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}
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)["activity"]
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).get_object()
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self._handle_replies_delete(as_actor, obj)
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@ensure_it_is_me
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def inbox_update(self, as_actor: ap.Person, update: ap.Update) -> None:
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obj = update.get_object()
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if obj.ACTIVITY_TYPE == ap.ActivityType.NOTE:
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if not DB.inbox.find_one_and_update(
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{"activity.object.id": obj.id},
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{"$set": {"activity.object": obj.to_dict()}},
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):
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DB.threads.update_one(
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{"activity.object.id": obj.id},
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{"$set": {"activity.object": obj.to_dict()}},
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)
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# FIXME(tsileo): handle update actor amd inbox_update_note/inbox_update_actor
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@ensure_it_is_me
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def outbox_update(self, as_actor: ap.Person, _update: ap.Update) -> None:
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obj = _update._data["object"]
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update_prefix = "activity.object."
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update: Dict[str, Any] = {"$set": dict(), "$unset": dict()}
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update["$set"][f"{update_prefix}updated"] = (
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datetime.utcnow().replace(microsecond=0).isoformat() + "Z"
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)
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for k, v in obj.items():
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if k in ["id", "type"]:
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continue
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if v is None:
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update["$unset"][f"{update_prefix}{k}"] = ""
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else:
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update["$set"][f"{update_prefix}{k}"] = v
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if len(update["$unset"]) == 0:
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del (update["$unset"])
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print(f"updating note from outbox {obj!r} {update}")
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logger.info(f"updating note from outbox {obj!r} {update}")
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DB.outbox.update_one({"activity.object.id": obj["id"]}, update)
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# FIXME(tsileo): should send an Update (but not a partial one, to all the note's recipients
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# (create a new Update with the result of the update, and send it without saving it?)
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@ensure_it_is_me
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def outbox_create(self, as_actor: ap.Person, create: ap.Create) -> None:
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self._handle_replies(as_actor, create)
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@ensure_it_is_me
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def inbox_create(self, as_actor: ap.Person, create: ap.Create) -> None:
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self._handle_replies(as_actor, create)
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@ensure_it_is_me
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def _handle_replies_delete(self, as_actor: ap.Person, note: ap.Note) -> None:
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in_reply_to = note.inReplyTo
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if not in_reply_to:
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pass
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if not DB.inbox.find_one_and_update(
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{"activity.object.id": in_reply_to},
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{"$inc": {"meta.count_reply": -1, "meta.count_direct_reply": -1}},
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):
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if not DB.outbox.find_one_and_update(
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{"activity.object.id": in_reply_to},
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{"$inc": {"meta.count_reply": -1, "meta.count_direct_reply": -1}},
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):
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DB.threads.update_one(
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{"activity.object.id": in_reply_to},
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{"$inc": {"meta.count_reply": -1, "meta.count_direct_reply": -1}},
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)
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@ensure_it_is_me
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def _handle_replies(self, as_actor: ap.Person, create: ap.Create) -> None:
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"""Go up to the root reply, store unknown replies in the `threads` DB and set the "meta.thread_root_parent"
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key to make it easy to query a whole thread."""
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in_reply_to = create.get_object().inReplyTo
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if not in_reply_to:
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pass
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new_threads = []
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root_reply = in_reply_to
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reply = ap.fetch_remote_activity(root_reply, expected=ap.ActivityType.NOTE)
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if not DB.inbox.find_one_and_update(
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{"activity.object.id": in_reply_to},
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{"$inc": {"meta.count_reply": 1, "meta.count_direct_reply": 1}},
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):
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if not DB.outbox.find_one_and_update(
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{"activity.object.id": in_reply_to},
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{"$inc": {"meta.count_reply": 1, "meta.count_direct_reply": 1}},
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):
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# It means the activity is not in the inbox, and not in the outbox, we want to save it
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DB.threads.insert_one(
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{
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"activity": reply.to_dict(),
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"type": reply.type,
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"remote_id": reply.id,
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"meta": {"undo": False, "deleted": False},
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}
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)
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new_threads.append(reply.id)
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while reply is not None:
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in_reply_to = reply.inReplyTo
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if not in_reply_to:
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break
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root_reply = in_reply_to
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reply = ap.fetch_remote_activity(root_reply, expected=ap.ActivityType.NOTE)
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q = {"activity.object.id": root_reply}
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if not DB.inbox.count(q) and not DB.outbox.count(q):
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DB.threads.insert_one(
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{
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"activity": reply.to_dict(),
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"type": reply.type,
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"remote_id": reply.id,
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"meta": {"undo": False, "deleted": False},
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}
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)
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new_threads.append(reply.id)
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q = {"remote_id": create.id}
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if not DB.inbox.find_one_and_update(
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q, {"$set": {"meta.thread_root_parent": root_reply}}
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):
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DB.outbox.update_one(q, {"$set": {"meta.thread_root_parent": root_reply}})
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DB.threads.update(
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{"remote_id": {"$in": new_threads}},
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{"$set": {"meta.thread_root_parent": root_reply}},
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)
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def gen_feed():
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fg = FeedGenerator()
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fg.id(f"{ID}")
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fg.title(f"{USERNAME} notes")
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fg.author({"name": USERNAME, "email": "t@a4.io"})
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fg.link(href=ID, rel="alternate")
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fg.description(f"{USERNAME} notes")
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fg.logo(ME.get("icon", {}).get("url"))
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fg.language("en")
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for item in DB.outbox.find({"type": "Create"}, limit=50):
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fe = fg.add_entry()
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fe.id(item["activity"]["object"].get("url"))
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fe.link(href=item["activity"]["object"].get("url"))
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fe.title(item["activity"]["object"]["content"])
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fe.description(item["activity"]["object"]["content"])
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return fg
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def json_feed(path: str) -> Dict[str, Any]:
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"""JSON Feed (https://jsonfeed.org/) document."""
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data = []
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for item in DB.outbox.find({"type": "Create"}, limit=50):
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data.append(
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{
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"id": item["id"],
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"url": item["activity"]["object"].get("url"),
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"content_html": item["activity"]["object"]["content"],
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"content_text": html2text(item["activity"]["object"]["content"]),
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"date_published": item["activity"]["object"].get("published"),
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}
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)
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return {
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"version": "https://jsonfeed.org/version/1",
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"user_comment": (
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"This is a microblog feed. You can add this to your feed reader using the following URL: "
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+ ID
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+ path
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),
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"title": USERNAME,
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"home_page_url": ID,
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"feed_url": ID + path,
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"author": {
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"name": USERNAME,
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"url": ID,
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"avatar": ME.get("icon", {}).get("url"),
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},
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"items": data,
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}
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def build_inbox_json_feed(
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path: str, request_cursor: Optional[str] = None
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) -> Dict[str, Any]:
|
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"""Build a JSON feed from the inbox activities."""
|
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data = []
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cursor = None
|
|
|
|
q: Dict[str, Any] = {"type": "Create", "meta.deleted": False}
|
|
if request_cursor:
|
|
q["_id"] = {"$lt": request_cursor}
|
|
|
|
for item in DB.inbox.find(q, limit=50).sort("_id", -1):
|
|
actor = ap.get_backend().fetch_iri(item["activity"]["actor"])
|
|
data.append(
|
|
{
|
|
"id": item["activity"]["id"],
|
|
"url": item["activity"]["object"].get("url"),
|
|
"content_html": item["activity"]["object"]["content"],
|
|
"content_text": html2text(item["activity"]["object"]["content"]),
|
|
"date_published": item["activity"]["object"].get("published"),
|
|
"author": {
|
|
"name": actor.get("name", actor.get("preferredUsername")),
|
|
"url": actor.get("url"),
|
|
"avatar": actor.get("icon", {}).get("url"),
|
|
},
|
|
}
|
|
)
|
|
cursor = str(item["_id"])
|
|
|
|
resp = {
|
|
"version": "https://jsonfeed.org/version/1",
|
|
"title": f"{USERNAME}'s stream",
|
|
"home_page_url": ID,
|
|
"feed_url": ID + path,
|
|
"items": data,
|
|
}
|
|
if cursor and len(data) == 50:
|
|
resp["next_url"] = ID + path + "?cursor=" + cursor
|
|
|
|
return resp
|
|
|
|
|
|
def parse_collection(
|
|
payload: Optional[Dict[str, Any]] = None, url: Optional[str] = None
|
|
) -> List[str]:
|
|
"""Resolve/fetch a `Collection`/`OrderedCollection`."""
|
|
# Resolve internal collections via MongoDB directly
|
|
if url == ID + "/followers":
|
|
return [doc["remote_actor"] for doc in DB.followers.find()]
|
|
elif url == ID + "/following":
|
|
return [doc["remote_actor"] for doc in DB.following.find()]
|
|
|
|
# Go through all the pages
|
|
return ap_parse_collection(payload, url)
|
|
|
|
|
|
def embed_collection(total_items, first_page_id):
|
|
"""Helper creating a root OrderedCollection with a link to the first page."""
|
|
return {
|
|
"type": ap.ActivityType.ORDERED_COLLECTION.value,
|
|
"totalItems": total_items,
|
|
"first": f"{first_page_id}?page=first",
|
|
"id": first_page_id,
|
|
}
|
|
|
|
|
|
def build_ordered_collection(
|
|
col, q=None, cursor=None, map_func=None, limit=50, col_name=None, first_page=False
|
|
):
|
|
"""Helper for building an OrderedCollection from a MongoDB query (with pagination support)."""
|
|
col_name = col_name or col.name
|
|
if q is None:
|
|
q = {}
|
|
|
|
if cursor:
|
|
q["_id"] = {"$lt": ObjectId(cursor)}
|
|
data = list(col.find(q, limit=limit).sort("_id", -1))
|
|
|
|
if not data:
|
|
return {
|
|
"id": BASE_URL + "/" + col_name,
|
|
"totalItems": 0,
|
|
"type": ap.ActivityType.ORDERED_COLLECTION.value,
|
|
"orederedItems": [],
|
|
}
|
|
|
|
start_cursor = str(data[0]["_id"])
|
|
next_page_cursor = str(data[-1]["_id"])
|
|
total_items = col.find(q).count()
|
|
|
|
data = [_remove_id(doc) for doc in data]
|
|
if map_func:
|
|
data = [map_func(doc) for doc in data]
|
|
|
|
# No cursor, this is the first page and we return an OrderedCollection
|
|
if not cursor:
|
|
resp = {
|
|
"@context": ap.COLLECTION_CTX,
|
|
"id": f"{BASE_URL}/{col_name}",
|
|
"totalItems": total_items,
|
|
"type": ap.ActivityType.ORDERED_COLLECTION.value,
|
|
"first": {
|
|
"id": f"{BASE_URL}/{col_name}?cursor={start_cursor}",
|
|
"orderedItems": data,
|
|
"partOf": f"{BASE_URL}/{col_name}",
|
|
"totalItems": total_items,
|
|
"type": ap.ActivityType.ORDERED_COLLECTION_PAGE.value,
|
|
},
|
|
}
|
|
|
|
if len(data) == limit:
|
|
resp["first"]["next"] = (
|
|
BASE_URL + "/" + col_name + "?cursor=" + next_page_cursor
|
|
)
|
|
|
|
if first_page:
|
|
return resp["first"]
|
|
|
|
return resp
|
|
|
|
# If there's a cursor, then we return an OrderedCollectionPage
|
|
resp = {
|
|
"@context": ap.COLLECTION_CTX,
|
|
"type": ap.ActivityType.ORDERED_COLLECTION_PAGE.value,
|
|
"id": BASE_URL + "/" + col_name + "?cursor=" + start_cursor,
|
|
"totalItems": total_items,
|
|
"partOf": BASE_URL + "/" + col_name,
|
|
"orderedItems": data,
|
|
}
|
|
if len(data) == limit:
|
|
resp["next"] = BASE_URL + "/" + col_name + "?cursor=" + next_page_cursor
|
|
|
|
if first_page:
|
|
return resp["first"]
|
|
|
|
# XXX(tsileo): implements prev with prev=<first item cursor>?
|
|
|
|
return resp
|