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Add helper to parse an enum from query args & use it. (#14956)

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The `parse_enum` helper pulls an enum value from the query string
(by delegating down to the parse_string helper with values generated
from the enum).

This is used to pull out "f" and "b" in most places and then we thread
the resulting Direction enum throughout more code.
This commit is contained in:
Patrick Cloke 2023-02-01 16:35:24 -05:00 • committed by GitHub
parent 230a831c73
commit 1182ae5063
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25 changed files with 176 additions and 96 deletions
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11
synapse/storage/databases/main/events_worker.py
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@ -38,7 +38,7 @@ from typing_extensions import Literal
from twisted.internet import defer
from synapse.api.constants import EventTypes
from synapse.api.constants import Direction, EventTypes
from synapse.api.errors import NotFoundError, SynapseError
from synapse.api.room_versions import (
KNOWN_ROOM_VERSIONS,
@ -2240,7 +2240,7 @@ class EventsWorkerStore(SQLBaseStore):
)
async def get_event_id_for_timestamp(
self, room_id: str, timestamp: int, direction: str
self, room_id: str, timestamp: int, direction: Direction
) -> Optional[str]:
"""Find the closest event to the given timestamp in the given direction.
@ -2248,14 +2248,14 @@ class EventsWorkerStore(SQLBaseStore):
room_id: Room to fetch the event from
timestamp: The point in time (inclusive) we should navigate from in
the given direction to find the closest event.
direction: ["f"|"b"] to indicate whether we should navigate forward
direction: indicates whether we should navigate forward
or backward from the given timestamp to find the closest event.
Returns:
The closest event_id otherwise None if we can't find any event in
the given direction.
"""
if direction == "b":
if direction == Direction.BACKWARDS:
# Find closest event *before* a given timestamp. We use descending
# (which gives values largest to smallest) because we want the
# largest possible timestamp *before* the given timestamp.
@ -2307,9 +2307,6 @@ class EventsWorkerStore(SQLBaseStore):
return None
if direction not in ("f", "b"):
raise ValueError("Unknown direction: %s" % (direction,))
return await self.db_pool.runInteraction(
"get_event_id_for_timestamp_txn",
get_event_id_for_timestamp_txn,