hotfix(exporter): fix data race #1883
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y0sher
reviewed
Nov 27, 2024
| c.committeesObserversMutex.Lock() | ||
| defer c.committeesObserversMutex.Unlock() | ||
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| if msg.MsgType == spectypes.SSVConsensusMsgType { | ||
| // Check if the observer already exists | ||
| existingObserver := c.committeesObservers.Get(ssvMsg.GetID()) |
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isn't ttlcache already thread safe? why we need the mutex here then?
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Without the mutex, there’s a risk of race conditions where multiple goroutines might attempt to create and set the same observer simultaneously.
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this can be also solved by the cache's GetOrSet func, but involves creating the observer each time and sometimes for nothing. though it will be GC'd quickly if not used, there is no goroutine in the creation.
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