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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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9
synapse/handlers/room.py
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@ -27,6 +27,7 @@ from typing_extensions import TypedDict
import synapse.events.snapshot
from synapse.api.constants import (
Direction,
EventContentFields,
EventTypes,
GuestAccess,
@ -1487,7 +1488,7 @@ class TimestampLookupHandler:
requester: Requester,
room_id: str,
timestamp: int,
direction: str,
direction: Direction,
) -> Tuple[str, int]:
"""Find the closest event to the given timestamp in the given direction.
If we can't find an event locally or the event we have locally is next to a gap,
@ -1498,7 +1499,7 @@ class TimestampLookupHandler:
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:
@ -1533,13 +1534,13 @@ class TimestampLookupHandler:
local_event_id, allow_none=False, allow_rejected=False
)
if direction == "f":
if direction == Direction.FORWARDS:
# We only need to check for a backward gap if we're looking forwards
# to ensure there is nothing in between.
is_event_next_to_backward_gap = (
await self.store.is_event_next_to_backward_gap(local_event)
)
elif direction == "b":
elif direction == Direction.BACKWARDS:
# We only need to check for a forward gap if we're looking backwards
# to ensure there is nothing in between
is_event_next_to_forward_gap = (