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Negative index nack request

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This commit is contained in:
rltakashige
2025-12-09 15:57:28 +00:00
committed by GitHub
parent ac3a0a6b47
commit 70298ce0a9
1 changed files with 10 additions and 1 deletions
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11
src/exo/worker/main.py
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@@ -159,8 +159,9 @@ class Worker:
or self._nack_cancel_scope.cancel_called
):
assert self._tg
# Request the next index.
self._tg.start_soon(
self._nack_request, self.state.last_event_applied_idx
self._nack_request, self.state.last_event_applied_idx + 1
)
continue
elif indexed_events and self._nack_cancel_scope:
@@ -295,6 +296,11 @@ class Worker:
# We request all events after (and including) the missing index.
# This function is started whenever we receive an event that is out of sequence.
# It is cancelled as soon as we receiver an event that is in sequence.
if since_idx < 0:
logger.warning(f"Negative value encountered for nack request {since_idx=}")
since_idx = 0
with CancelScope() as scope:
self._nack_cancel_scope = scope
delay: float = self._nack_base_seconds * (2.0**self._nack_attempts)
@@ -302,6 +308,9 @@ class Worker:
self._nack_attempts += 1
try:
await anyio.sleep(delay)
logger.info(
f"Nack attempt {self._nack_attempts}: Requesting Event Log from {since_idx}"
)
await self.command_sender.send(
ForwarderCommand(
origin=self.node_id,