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Merge pull request #2712 from yueguobin/fix/compute-reconnection-backoff

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Fix: Add exponential backoff to compute reconnection attempts
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Jeremy Grossmann 2026-05-07 11:35:46 +08:00 committed by GitHub
commit 0d88ff87e7
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1 changed files with 5 additions and 3 deletions
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8
gns3server/controller/compute.py
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@ -383,14 +383,16 @@ class Compute:
if report_failed_connection:
raise
log.warning(f"Cannot connect to compute '{self._id}': {e}")
# Try to reconnect after 5 seconds if server unavailable only if not during tests (otherwise we create a ressource usage bomb)
# Try to reconnect if server unavailable only if not during tests (otherwise we create a ressource usage bomb)
if not hasattr(sys, "_called_from_test") or not sys._called_from_test:
self._connection_failure += 1
# After 5 failure we close the project using the compute to avoid sync issues
# After 10 failures we close the project using the compute to avoid sync issues
if self._connection_failure == 10:
log.error(f"Could not connect to compute '{self._id}' after multiple attempts: {e}")
await self._controller.close_compute_projects(self)
asyncio.get_event_loop().call_later(5, lambda: asyncio.ensure_future(self._try_reconnect()))
# Exponential backoff: 5s, 10s, 20s, 40s, 80s, then cap at 300s
delay = min(5 * (2 ** (self._connection_failure - 1)), 300)
asyncio.get_event_loop().call_later(delay, lambda: asyncio.ensure_future(self._try_reconnect()))
return
except web.HTTPNotFound:
raise ControllerNotFoundError(f"The server {self._id} is not a GNS3 server or it's a 1.X server")