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Short circuit genesis condition for new state mgmt #5223

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merged 4 commits into from Mar 26, 2020
Merged

Short circuit genesis condition for new state mgmt #5223

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5d3d2d2
Fixed a regression. Genesis case for state gen
terencechain Mar 26, 2020
81a8e1a
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terencechain Mar 26, 2020
d5bc61d
Merge refs/heads/master into fix-genesis-case
prylabs-bulldozer[bot] Mar 26, 2020
62add8a
Merge refs/heads/master into fix-genesis-case
prylabs-bulldozer[bot] Mar 26, 2020
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6 changes: 6 additions & 0 deletions beacon-chain/state/stategen/getter.go
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Expand Up @@ -5,6 +5,7 @@ import (

"github.com/pkg/errors"
"github.com/prysmaticlabs/prysm/beacon-chain/state"
"github.com/prysmaticlabs/prysm/shared/params"
"go.opencensus.io/trace"
)

Expand All @@ -15,6 +16,11 @@ func (s *State) StateByRoot(ctx context.Context, blockRoot [32]byte) (*state.Bea
ctx, span := trace.StartSpan(ctx, "stateGen.StateByRoot")
defer span.End()

// Genesis case. If block root is zero hash, short circuit to use genesis state stored in DB.
if blockRoot == params.BeaconConfig().ZeroHash {
return s.beaconDB.State(ctx, blockRoot)
}

slot, err := s.blockRootSlot(ctx, blockRoot)
if err != nil {
return nil, errors.Wrap(err, "could not get state summary")
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