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Gate log notifications on the per-request log-level opt-in at 2026-07-28 (#3198)

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Max 2026-07-28 02:20:33 +01:00 • committed by GitHub
commit 89c5e700f2
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1 changed files with 406 additions and 31 deletions
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21
tests/server/test_runner.py
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@ -25,6 +25,7 @@ from mcp_types import (
INVALID_PARAMS,
INVALID_REQUEST,
LATEST_PROTOCOL_VERSION,
LOG_LEVEL_META_KEY,
METHOD_NOT_FOUND,
PROTOCOL_VERSION_META_KEY,
SERVER_INFO_META_KEY,
@ -1759,6 +1760,26 @@ async def test_dual_era_loop_legacy_notifications_reach_the_loop_runner(server:
await handled.wait()
@pytest.mark.anyio
async def test_dual_era_loop_a_notifications_meta_never_opens_the_log_gate(server: SrvT):
"""The 2026 log-delivery opt-in is a request's `_meta`: an inbound notification
has no request to opt in, so a handler logging in response to one - even
with the log-level key in the notification's own `_meta` - sends nothing."""
logged = anyio.Event()
async def log_it(ctx: Ctx, params: NotificationParams | None) -> None:
await ctx.session.send_log_message("emergency", "no request opted in") # pyright: ignore[reportDeprecated]
logged.set()
server.add_notification_handler("notifications/custom", NotificationParams, log_it)
async with dual_era_client(server) as (client, recorder):
await client.send_raw_request("tools/list", _modern_params())
meta = {**_modern_envelope(), LOG_LEVEL_META_KEY: "debug"}
await client.notify("notifications/custom", {"_meta": meta})
await logged.wait()
assert [method for method, _ in recorder.notifications] == []
@pytest.mark.anyio
async def test_dual_era_loop_modern_server_notifications_ride_the_pipe(server: SrvT):
"""A modern handler's standalone notification reaches the client over the