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from http import HTTPStatus
from typing import TYPE_CHECKING
from synapse.api.errors import NotFoundError
from synapse.events.utils import (
SerializeEventConfig,
format_event_raw,
serialize_event,
)
from synapse.http.servlet import RestServlet
from synapse.http.site import SynapseRequest
from synapse.rest.admin import admin_patterns
from synapse.rest.admin._base import assert_user_is_admin
from synapse.storage.databases.main.events_worker import EventRedactBehaviour
from synapse.types import JsonDict
if TYPE_CHECKING:
from synapse.server import HomeServer
class EventRestServlet(RestServlet):
"""
Get an event that is known to the homeserver.
The requester must have administrator access in Synapse.
GET /_synapse/admin/v1/fetch_event/<event_id>
returns:
200 OK with event json if the event is known to the homeserver. Otherwise raises
a NotFound error.
Args:
event_id: the id of the requested event.
Returns:
JSON blob of the event
"""
PATTERNS = admin_patterns("/fetch_event/(?P<event_id>[^/]*)$")
def __init__(self, hs: "HomeServer"):
self._auth = hs.get_auth()
self._store = hs.get_datastores().main
self._clock = hs.get_clock()
async def on_GET(
self, request: SynapseRequest, event_id: str
) -> tuple[int, JsonDict]:
requester = await self._auth.get_user_by_req(request)
await assert_user_is_admin(self._auth, requester)
event = await self._store.get_event(
event_id,
EventRedactBehaviour.as_is,
allow_none=True,
)
if event is None:
raise NotFoundError("Event not found")
config = SerializeEventConfig(
as_client_event=False,
event_format=format_event_raw,
requester=requester,
only_event_fields=None,
include_stripped_room_state=True,
include_admin_metadata=True,
)
res = {"event": serialize_event(event, self._clock.time_msec(), config=config)}
return HTTPStatus.OK, res
|
