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generate_root_block_vote.go
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generate_root_block_vote.go
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package cmd
import (
"encoding/json"
"fmt"
"path/filepath"
"github.com/spf13/cobra"
"github.com/onflow/flow-go/cmd"
"github.com/onflow/flow-go/consensus/hotstuff/model"
hotstuffSig "github.com/onflow/flow-go/consensus/hotstuff/signature"
"github.com/onflow/flow-go/consensus/hotstuff/verification"
"github.com/onflow/flow-go/model/bootstrap"
"github.com/onflow/flow-go/model/encodable"
"github.com/onflow/flow-go/model/flow"
"github.com/onflow/flow-go/module/local"
"github.com/onflow/flow-go/utils/io"
)
var generateVoteCmd = &cobra.Command{
Use: "generate-root-block-vote",
Short: "Generate root block vote",
Run: generateVote,
}
func init() {
rootCmd.AddCommand(generateVoteCmd)
}
func generateVote(c *cobra.Command, args []string) {
log.Info().Msg("generating root block vote")
nodeIDString, err := readNodeID()
if err != nil {
log.Fatal().Err(err).Msg("could not read node ID")
}
nodeID, err := flow.HexStringToIdentifier(nodeIDString)
if err != nil {
log.Fatal().Err(err).Msg("could not parse node ID")
}
nodeInfo, err := cmd.LoadPrivateNodeInfo(flagBootDir, nodeID)
if err != nil {
log.Fatal().Err(err).Msg("could not load private node info")
}
// load DKG private key
path := fmt.Sprintf(bootstrap.PathRandomBeaconPriv, nodeID)
data, err := io.ReadFile(filepath.Join(flagBootDir, path))
if err != nil {
log.Fatal().Err(err).Msg("could not read DKG private key file")
}
var randomBeaconPrivKey encodable.RandomBeaconPrivKey
err = json.Unmarshal(data, &randomBeaconPrivKey)
if err != nil {
log.Fatal().Err(err).Msg("could not unmarshal DKG private key data")
}
stakingPrivKey := nodeInfo.StakingPrivKey.PrivateKey
identity := flow.IdentitySkeleton{
NodeID: nodeID,
Address: nodeInfo.Address,
Role: nodeInfo.Role,
InitialWeight: flow.DefaultInitialWeight,
StakingPubKey: stakingPrivKey.PublicKey(),
NetworkPubKey: nodeInfo.NetworkPrivKey.PrivateKey.PublicKey(),
}
me, err := local.New(identity, nodeInfo.StakingPrivKey.PrivateKey)
if err != nil {
log.Fatal().Err(err).Msg("creating local signer abstraction failed")
}
beaconKeyStore := hotstuffSig.NewStaticRandomBeaconSignerStore(randomBeaconPrivKey)
signer := verification.NewCombinedSigner(me, beaconKeyStore)
path = filepath.Join(flagBootDir, bootstrap.PathRootBlockData)
data, err = io.ReadFile(path)
if err != nil {
log.Fatal().Err(err).Msg("could not read root block file")
}
var rootBlock flow.Block
err = json.Unmarshal(data, &rootBlock)
if err != nil {
log.Fatal().Err(err).Msg("could not unmarshal root block data")
}
vote, err := signer.CreateVote(model.GenesisBlockFromFlow(rootBlock.Header))
if err != nil {
log.Fatal().Err(err).Msg("could not load private node info")
}
voteFile := fmt.Sprintf(bootstrap.PathNodeRootBlockVote, nodeID)
if err = io.WriteJSON(filepath.Join(flagBootDir, voteFile), vote); err != nil {
log.Fatal().Err(err).Msg("could not write vote to file")
}
log.Info().Msgf("node %v successfully generated vote file for block %v", nodeID, rootBlock.ID())
}