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fix: chainstore: do not get stuck in unhappy equivocation cases

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This commit is contained in:
Aayush 2023-08-11 16:46:56 -04:00
parent 7b43f90a3b
commit 12e076e9ea
2 changed files with 12 additions and 9 deletions
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16
chain/store/store.go
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@ -446,13 +446,15 @@ func (cs *ChainStore) RefreshHeaviestTipSet(ctx context.Context, newTsHeight abi
}
}
if newHeaviest == nil {
return xerrors.Errorf("failed to refresh to a new valid tipset")
}
errTake := cs.takeHeaviestTipSet(ctx, newHeaviest)
if errTake != nil {
return xerrors.Errorf("failed to take newHeaviest tipset as head: %w", err)
// if we've found something, we know it's the heaviest equivocation-free head, take it IMMEDIATELY
if newHeaviest != nil {
errTake := cs.takeHeaviestTipSet(ctx, newHeaviest)
if errTake != nil {
return xerrors.Errorf("failed to take newHeaviest tipset as head: %w", err)
}
} else {
// if we haven't found something, just stay with our equivocation-y head
newHeaviest = cs.heaviest
}
}

5
chain/store/store_test.go
View File

@ -396,8 +396,9 @@ func TestEquivocations(t *testing.T) {
require.Nil(t, tryTs2)
require.True(t, tryTsWeight2.IsZero())
// now we "notify" at this height -- it should fail, because we cannot refresh our head due to equivocation and nulls
require.ErrorContains(t, cg.ChainStore().RefreshHeaviestTipSet(ctx, blkAfterNulls.Height), "failed to refresh to a new valid tipset")
// now we "notify" at this height -- it should lead to no head change because there's no formable head in near epochs
require.NoError(t, cg.ChainStore().RefreshHeaviestTipSet(ctx, blkAfterNulls.Height))
require.True(t, headAfterNulls.TipSet.TipSet().Equals(cg.ChainStore().GetHeaviestTipSet()))
}
func addBlockToTracker(t *testing.T, cs *store.ChainStore, blk *types.BlockHeader) {