package grpc import ( context "context" "google.golang.org/grpc/codes" "google.golang.org/grpc/status" "github.com/tendermint/tendermint/crypto" cryptoenc "github.com/tendermint/tendermint/crypto/encoding" "github.com/tendermint/tendermint/libs/log" privvalproto "github.com/tendermint/tendermint/proto/tendermint/privval" "github.com/tendermint/tendermint/types" ) // SignerServer implements PrivValidatorAPIServer 9generated via protobuf services) // Handles remote validator connections that provide signing services type SignerServer struct { logger log.Logger chainID string privVal types.PrivValidator } func NewSignerServer(chainID string, privVal types.PrivValidator, log log.Logger) *SignerServer { return &SignerServer{ logger: log, chainID: chainID, privVal: privVal, } } var _ privvalproto.PrivValidatorAPIServer = (*SignerServer)(nil) // PubKey receives a request for the pubkey // returns the pubkey on success and error on failure func (ss *SignerServer) GetPubKey(ctx context.Context, req *privvalproto.PubKeyRequest) ( *privvalproto.PubKeyResponse, error) { var pubKey crypto.PubKey pubKey, err := ss.privVal.GetPubKey() if err != nil { return nil, status.Errorf(codes.NotFound, "error getting pubkey: %v", err) } pk, err := cryptoenc.PubKeyToProto(pubKey) if err != nil { return nil, status.Errorf(codes.Internal, "error transitioning pubkey to proto: %v", err) } ss.logger.Info("SignerServer: GetPubKey Success") return &privvalproto.PubKeyResponse{PubKey: pk}, nil } // SignVote receives a vote sign requests, attempts to sign it // returns SignedVoteResponse on success and error on failure func (ss *SignerServer) SignVote(ctx context.Context, req *privvalproto.SignVoteRequest) ( *privvalproto.SignedVoteResponse, error) { vote := req.Vote err := ss.privVal.SignVote(req.ChainId, vote) if err != nil { return nil, status.Errorf(codes.InvalidArgument, "error signing vote: %v", err) } ss.logger.Info("SignerServer: SignVote Success") return &privvalproto.SignedVoteResponse{Vote: *vote}, nil } // SignProposal receives a proposal sign requests, attempts to sign it // returns SignedProposalResponse on success and error on failure func (ss *SignerServer) SignProposal(ctx context.Context, req *privvalproto.SignProposalRequest) ( *privvalproto.SignedProposalResponse, error) { proposal := req.Proposal err := ss.privVal.SignProposal(req.ChainId, proposal) if err != nil { return nil, status.Errorf(codes.InvalidArgument, "error signing proposal: %v", err) } ss.logger.Info("SignerServer: SignProposal Success") return &privvalproto.SignedProposalResponse{Proposal: *proposal}, nil }