prysm-pulse/beacon-chain/rpc/prysm/v1alpha1/validator/exit.go
terence tsao b38b0186b8
Use signature length from fieldparams (#10019)
* Use bls sig length from fieldparams

* fmt

* fix tests

* fix tests

* fix tests

* Update tags_test.go

* fix tests

* Update BUILD.bazel
2021-12-15 15:14:30 -05:00

59 lines
1.9 KiB
Go

package validator
import (
"context"
"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
"github.com/prysmaticlabs/prysm/beacon-chain/core/feed"
opfeed "github.com/prysmaticlabs/prysm/beacon-chain/core/feed/operation"
fieldparams "github.com/prysmaticlabs/prysm/config/fieldparams"
ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// ProposeExit proposes an exit for a validator.
func (vs *Server) ProposeExit(ctx context.Context, req *ethpb.SignedVoluntaryExit) (*ethpb.ProposeExitResponse, error) {
if req == nil {
return nil, status.Error(codes.InvalidArgument, "nil request")
}
s, err := vs.HeadFetcher.HeadState(ctx)
if err != nil {
return nil, status.Errorf(codes.Internal, "Could not get head state: %v", err)
}
if req.Exit == nil {
return nil, status.Error(codes.InvalidArgument, "voluntary exit does not exist")
}
if req.Signature == nil || len(req.Signature) != fieldparams.BLSSignatureLength {
return nil, status.Error(codes.InvalidArgument, "invalid signature provided")
}
// Confirm the validator is eligible to exit with the parameters provided.
val, err := s.ValidatorAtIndexReadOnly(req.Exit.ValidatorIndex)
if err != nil {
return nil, status.Error(codes.InvalidArgument, "validator index exceeds validator set length")
}
if err := blocks.VerifyExitAndSignature(val, s.Slot(), s.Fork(), req, s.GenesisValidatorRoot()); err != nil {
return nil, status.Error(codes.InvalidArgument, err.Error())
}
vs.OperationNotifier.OperationFeed().Send(&feed.Event{
Type: opfeed.ExitReceived,
Data: &opfeed.ExitReceivedData{
Exit: req,
},
})
vs.ExitPool.InsertVoluntaryExit(ctx, s, req)
r, err := req.Exit.HashTreeRoot()
if err != nil {
return nil, status.Errorf(codes.Internal, "Could not get tree hash of exit: %v", err)
}
return &ethpb.ProposeExitResponse{
ExitRoot: r[:],
}, vs.P2P.Broadcast(ctx, req)
}