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Fix mid-epoch assignment requests (#3168)

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* fix mid-epoch assignments

* add quick test comment
This commit is contained in:
Preston Van Loon 2019-08-10 15:49:58 -04:00 committed by GitHub
parent d153abd992
commit 830a0a4bca
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 64 additions and 5 deletions
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9
beacon-chain/rpc/validator_server.go
View File

@ -139,11 +139,12 @@ func (vs *ValidatorServer) CommitteeAssignment(ctx context.Context, req *pb.Assi
return nil, errors.Wrap(err, "could not fetch beacon state")
}
// Advance state with empty transitions up to the requested slot.
slotsToAdvance := req.EpochStart * params.BeaconConfig().SlotsPerEpoch
s, err = state.ProcessSlots(ctx, s, slotsToAdvance)
// Advance state with empty transitions up to the requested epoch start slot.
if epochStartSlot := helpers.StartSlot(req.EpochStart); s.Slot < epochStartSlot {
s, err = state.ProcessSlots(ctx, s, epochStartSlot)
if err != nil {
return nil, fmt.Errorf("could not process slots up to %d", slotsToAdvance)
return nil, errors.Wrapf(err, "could not process slots up to %d", epochStartSlot)
}
}
validatorIndexMap := stateutils.ValidatorIndexMap(s)

58
beacon-chain/rpc/validator_server_test.go
View File

@ -237,6 +237,64 @@ func TestCommitteeAssignment_OK(t *testing.T) {
}
}
func TestCommitteeAssignment_CurrentEpoch_ShouldNotFail(t *testing.T) {
helpers.ClearAllCaches()
db := internal.SetupDB(t)
defer internal.TeardownDB(t, db)
ctx := context.Background()
genesis := blk.NewGenesisBlock([]byte{})
if err := db.SaveBlock(genesis); err != nil {
t.Fatalf("Could not save genesis block: %v", err)
}
depChainStart := params.BeaconConfig().MinGenesisActiveValidatorCount / 16
deposits, _ := testutil.SetupInitialDeposits(t, depChainStart)
state, err := state.GenesisBeaconState(deposits, 0, &ethpb.Eth1Data{})
if err != nil {
t.Fatalf("Could not setup genesis state: %v", err)
}
state.Slot = 5 // Set state to non-epoch start slot.
if err := db.UpdateChainHead(ctx, genesis, state); err != nil {
t.Fatalf("Could not save genesis state: %v", err)
}
var wg sync.WaitGroup
numOfValidators := int(depChainStart)
errs := make(chan error, numOfValidators)
for i := 0; i < len(deposits); i++ {
wg.Add(1)
go func(index int) {
errs <- db.SaveValidatorIndexBatch(deposits[index].Data.PublicKey, index)
wg.Done()
}(i)
}
wg.Wait()
close(errs)
for err := range errs {
if err != nil {
t.Fatalf("Could not save validator index: %v", err)
}
}
vs := &ValidatorServer{
beaconDB: db,
}
// Test the first validator in registry.
req := &pb.AssignmentRequest{
PublicKeys: [][]byte{deposits[0].Data.PublicKey},
EpochStart: 0,
}
res, err := vs.CommitteeAssignment(context.Background(), req)
if err != nil {
t.Fatal(err)
}
if len(res.ValidatorAssignment) != 1 {
t.Error("Expected 1 assignment")
}
}
func TestCommitteeAssignment_multipleKeys_OK(t *testing.T) {
db := internal.SetupDB(t)
defer internal.TeardownDB(t, db)