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Fix tracker errors after a block reorganization #247

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merged 3 commits into from
Jun 20, 2023

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Nemanja0x
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The problem is when reorganization occurs on chain, so the parent block does not exist any more. function handleReconcileImpl() should check if the obtained block is nil (parent == nil):
parent, err := t.provider.GetBlockByHash(block.ParentHash, false)

There are some additional places in blocktracker.go and tracker.go which should be handled also. They are introduces in this PR as well.

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tracker/tracker.go Show resolved Hide resolved
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Fix the comment and it should be good.

@@ -882,3 +888,15 @@ func parseUint64orHex(str string) (uint64, error) {
}
return strconv.ParseUint(str, base, 64)
}

func getBlockByNumber(provider Provider, blockNumber uint64) (*ethgo.Block, error) {
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Add this as a function of Tracker.

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fixed: 4b3217e

@ferranbt ferranbt merged commit bcb1d27 into umbracle:main Jun 20, 2023
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@Nemanja0x Nemanja0x deleted the Fix_trackers_after_reorg branch June 20, 2023 07:47
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3 participants