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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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12
synapse/streams/config.py
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@ -18,7 +18,7 @@ import attr
from synapse.api.constants import Direction
from synapse.api.errors import SynapseError
from synapse.http.servlet import parse_integer, parse_string
from synapse.http.servlet import parse_enum, parse_integer, parse_string
from synapse.http.site import SynapseRequest
from synapse.storage.databases.main import DataStore
from synapse.types import StreamToken
@ -44,15 +44,9 @@ class PaginationConfig:
store: "DataStore",
request: SynapseRequest,
default_limit: int,
default_dir: str = "f",
default_dir: Direction = Direction.FORWARDS,
) -> "PaginationConfig":
direction_str = parse_string(
request,
"dir",
default=default_dir,
allowed_values=[Direction.FORWARDS.value, Direction.BACKWARDS.value],
)
direction = Direction(direction_str)
direction = parse_enum(request, "dir", Direction, default=default_dir)
from_tok_str = parse_string(request, "from")
to_tok_str = parse_string(request, "to")