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Add guard task to monitor synchronization worker Future. (#1972)

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* Add guard task to monitor synchronization worker Future.

* Change log events from debug to warning level.
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Eugene Kabanov 2020-11-10 15:47:26 +02:00 committed by GitHub
parent 08da65edea
commit ea4d94c65c
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1 changed files with 25 additions and 3 deletions
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28
beacon_chain/sync_manager.nim
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@ -987,13 +987,35 @@ proc getWorkersStats[A, B](man: SyncManager[A, B]): tuple[map: string,
map[i] = ch
(map, sleeping, waiting, pending)
proc guardTask[A, B](man: SyncManager[A, B]) {.async.} =
var pending: array[SyncWorkersCount, Future[void]]
# Starting all the synchronization workers.
for i in 0 ..< len(man.workers):
let future = syncWorker[A, B](man, i)
man.workers[i].future = future
pending[i] = future
# Wait for synchronization worker's failure and replace it with new one.
while true:
let failFuture = await one(pending)
let index = pending.find(failFuture)
if failFuture.failed():
warn "Synchronization worker stopped working unexpectedly with an error",
index = index, errMsg = failFuture.error.msg
else:
warn "Synchronization worker stopped working unexpectedly without error",
index = index
let future = syncWorker[A, B](man, index)
man.workers[index].future = future
pending[index] = future
proc syncLoop[A, B](man: SyncManager[A, B]) {.async.} =
mixin getKey, getScore
var pauseTime = 0
# Starting all sync workers
for i in 0 ..< len(man.workers):
man.workers[i].future = syncWorker[A, B](man, i)
asyncSpawn man.guardTask()
debug "Synchronization loop started", topics = "syncman"