You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
3.4 KiB
131 lines
3.4 KiB
package privval
|
|
|
|
import (
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
|
|
"github.com/tendermint/tendermint/crypto"
|
|
"github.com/tendermint/tendermint/types"
|
|
)
|
|
|
|
// SignerClient implements PrivValidator.
|
|
// Handles remote validator connections that provide signing services
|
|
type SignerClient struct {
|
|
endpoint *SignerListenerEndpoint
|
|
}
|
|
|
|
var _ types.PrivValidator = (*SignerClient)(nil)
|
|
|
|
// NewSignerClient returns an instance of SignerClient.
|
|
// it will start the endpoint (if not already started)
|
|
func NewSignerClient(endpoint *SignerListenerEndpoint) (*SignerClient, error) {
|
|
if !endpoint.IsRunning() {
|
|
if err := endpoint.Start(); err != nil {
|
|
return nil, errors.Wrap(err, "failed to start listener endpoint")
|
|
}
|
|
}
|
|
|
|
return &SignerClient{endpoint: endpoint}, nil
|
|
}
|
|
|
|
// Close closes the underlying connection
|
|
func (sc *SignerClient) Close() error {
|
|
return sc.endpoint.Close()
|
|
}
|
|
|
|
// IsConnected indicates with the signer is connected to a remote signing service
|
|
func (sc *SignerClient) IsConnected() bool {
|
|
return sc.endpoint.IsConnected()
|
|
}
|
|
|
|
// WaitForConnection waits maxWait for a connection or returns a timeout error
|
|
func (sc *SignerClient) WaitForConnection(maxWait time.Duration) error {
|
|
return sc.endpoint.WaitForConnection(maxWait)
|
|
}
|
|
|
|
//--------------------------------------------------------
|
|
// Implement PrivValidator
|
|
|
|
// Ping sends a ping request to the remote signer
|
|
func (sc *SignerClient) Ping() error {
|
|
response, err := sc.endpoint.SendRequest(&PingRequest{})
|
|
|
|
if err != nil {
|
|
sc.endpoint.Logger.Error("SignerClient::Ping", "err", err)
|
|
return nil
|
|
}
|
|
|
|
_, ok := response.(*PingResponse)
|
|
if !ok {
|
|
sc.endpoint.Logger.Error("SignerClient::Ping", "err", "response != PingResponse")
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// GetPubKey retrieves a public key from a remote signer
|
|
func (sc *SignerClient) GetPubKey() crypto.PubKey {
|
|
response, err := sc.endpoint.SendRequest(&PubKeyRequest{})
|
|
if err != nil {
|
|
sc.endpoint.Logger.Error("SignerClient::GetPubKey", "err", err)
|
|
return nil
|
|
}
|
|
|
|
pubKeyResp, ok := response.(*PubKeyResponse)
|
|
if !ok {
|
|
sc.endpoint.Logger.Error("SignerClient::GetPubKey", "err", "response != PubKeyResponse")
|
|
return nil
|
|
}
|
|
|
|
if pubKeyResp.Error != nil {
|
|
sc.endpoint.Logger.Error("failed to get private validator's public key", "err", pubKeyResp.Error)
|
|
return nil
|
|
}
|
|
|
|
return pubKeyResp.PubKey
|
|
}
|
|
|
|
// SignVote requests a remote signer to sign a vote
|
|
func (sc *SignerClient) SignVote(chainID string, vote *types.Vote) error {
|
|
response, err := sc.endpoint.SendRequest(&SignVoteRequest{Vote: vote})
|
|
if err != nil {
|
|
sc.endpoint.Logger.Error("SignerClient::SignVote", "err", err)
|
|
return err
|
|
}
|
|
|
|
resp, ok := response.(*SignedVoteResponse)
|
|
if !ok {
|
|
sc.endpoint.Logger.Error("SignerClient::GetPubKey", "err", "response != SignedVoteResponse")
|
|
return ErrUnexpectedResponse
|
|
}
|
|
|
|
if resp.Error != nil {
|
|
return resp.Error
|
|
}
|
|
*vote = *resp.Vote
|
|
|
|
return nil
|
|
}
|
|
|
|
// SignProposal requests a remote signer to sign a proposal
|
|
func (sc *SignerClient) SignProposal(chainID string, proposal *types.Proposal) error {
|
|
response, err := sc.endpoint.SendRequest(&SignProposalRequest{Proposal: proposal})
|
|
if err != nil {
|
|
sc.endpoint.Logger.Error("SignerClient::SignProposal", "err", err)
|
|
return err
|
|
}
|
|
|
|
resp, ok := response.(*SignedProposalResponse)
|
|
if !ok {
|
|
sc.endpoint.Logger.Error("SignerClient::SignProposal", "err", "response != SignedProposalResponse")
|
|
return ErrUnexpectedResponse
|
|
}
|
|
if resp.Error != nil {
|
|
return resp.Error
|
|
}
|
|
*proposal = *resp.Proposal
|
|
|
|
return nil
|
|
}
|