/
lighthouse_validator.go
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/
lighthouse_validator.go
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package components
import (
"context"
"encoding/json"
"fmt"
"os"
"os/exec"
"path"
"path/filepath"
"strings"
"syscall"
"github.com/bazelbuild/rules_go/go/tools/bazel"
"github.com/google/uuid"
"github.com/pkg/errors"
"github.com/prysmaticlabs/prysm/v5/config/params"
"github.com/prysmaticlabs/prysm/v5/io/file"
"github.com/prysmaticlabs/prysm/v5/runtime/interop"
"github.com/prysmaticlabs/prysm/v5/testing/endtoend/helpers"
e2e "github.com/prysmaticlabs/prysm/v5/testing/endtoend/params"
"github.com/prysmaticlabs/prysm/v5/testing/endtoend/types"
e2etypes "github.com/prysmaticlabs/prysm/v5/testing/endtoend/types"
"github.com/prysmaticlabs/prysm/v5/validator/keymanager"
keystorev4 "github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4"
"golang.org/x/sync/errgroup"
)
var _ e2etypes.ComponentRunner = (*LighthouseValidatorNode)(nil)
var _ e2etypes.ComponentRunner = (*LighthouseValidatorNodeSet)(nil)
var _ e2etypes.MultipleComponentRunners = (*LighthouseValidatorNodeSet)(nil)
// LighthouseValidatorNodeSet represents set of lighthouse validator nodes.
type LighthouseValidatorNodeSet struct {
e2etypes.ComponentRunner
config *e2etypes.E2EConfig
started chan struct{}
nodes []e2etypes.ComponentRunner
}
// NewLighthouseValidatorNodeSet creates and returns a set of lighthouse validator nodes.
func NewLighthouseValidatorNodeSet(config *e2etypes.E2EConfig) *LighthouseValidatorNodeSet {
return &LighthouseValidatorNodeSet{
config: config,
started: make(chan struct{}, 1),
}
}
// Start starts the configured amount of validators, also sending and mining their deposits.
func (s *LighthouseValidatorNodeSet) Start(ctx context.Context) error {
// Always using genesis count since using anything else would be difficult to test for.
validatorNum := int(params.BeaconConfig().MinGenesisActiveValidatorCount)
lighthouseBeaconNum := e2e.TestParams.LighthouseBeaconNodeCount
prysmBeaconNum := e2e.TestParams.BeaconNodeCount
beaconNodeNum := lighthouseBeaconNum + prysmBeaconNum
if validatorNum%beaconNodeNum != 0 {
return errors.New("validator count is not easily divisible by beacon node count")
}
validatorsPerNode := validatorNum / beaconNodeNum
// Create validator nodes.
nodes := make([]e2etypes.ComponentRunner, lighthouseBeaconNum)
for i := 0; i < lighthouseBeaconNum; i++ {
offsetIdx := i + prysmBeaconNum
nodes[i] = NewLighthouseValidatorNode(s.config, validatorsPerNode, i, validatorsPerNode*offsetIdx)
}
s.nodes = nodes
// Wait for all nodes to finish their job (blocking).
// Once nodes are ready passed in handler function will be called.
return helpers.WaitOnNodes(ctx, nodes, func() {
// All nodes started, close channel, so that all services waiting on a set, can proceed.
close(s.started)
})
}
// Started checks whether validator node set is started and all nodes are ready to be queried.
func (s *LighthouseValidatorNodeSet) Started() <-chan struct{} {
return s.started
}
// Pause pauses the component and its underlying process.
func (s *LighthouseValidatorNodeSet) Pause() error {
for _, n := range s.nodes {
if err := n.Pause(); err != nil {
return err
}
}
return nil
}
// Resume resumes the component and its underlying process.
func (s *LighthouseValidatorNodeSet) Resume() error {
for _, n := range s.nodes {
if err := n.Resume(); err != nil {
return err
}
}
return nil
}
// Stop stops the component and its underlying process.
func (s *LighthouseValidatorNodeSet) Stop() error {
for _, n := range s.nodes {
if err := n.Stop(); err != nil {
return err
}
}
return nil
}
// PauseAtIndex pauses the component and its underlying process at the desired index.
func (s *LighthouseValidatorNodeSet) PauseAtIndex(i int) error {
if i >= len(s.nodes) {
return errors.Errorf("provided index exceeds slice size: %d >= %d", i, len(s.nodes))
}
return s.nodes[i].Pause()
}
// ResumeAtIndex resumes the component and its underlying process at the desired index.
func (s *LighthouseValidatorNodeSet) ResumeAtIndex(i int) error {
if i >= len(s.nodes) {
return errors.Errorf("provided index exceeds slice size: %d >= %d", i, len(s.nodes))
}
return s.nodes[i].Resume()
}
// StopAtIndex stops the component and its underlying process at the desired index.
func (s *LighthouseValidatorNodeSet) StopAtIndex(i int) error {
if i >= len(s.nodes) {
return errors.Errorf("provided index exceeds slice size: %d >= %d", i, len(s.nodes))
}
return s.nodes[i].Stop()
}
// ComponentAtIndex returns the component at the provided index.
func (s *LighthouseValidatorNodeSet) ComponentAtIndex(i int) (e2etypes.ComponentRunner, error) {
if i >= len(s.nodes) {
return nil, errors.Errorf("provided index exceeds slice size: %d >= %d", i, len(s.nodes))
}
return s.nodes[i], nil
}
// LighthouseValidatorNode represents a lighthouse validator node.
type LighthouseValidatorNode struct {
e2etypes.ComponentRunner
config *e2etypes.E2EConfig
started chan struct{}
validatorNum int
index int
offset int
cmd *exec.Cmd
}
// NewLighthouseValidatorNode creates and returns a lighthouse validator node.
func NewLighthouseValidatorNode(config *e2etypes.E2EConfig, validatorNum, index, offset int) *LighthouseValidatorNode {
return &LighthouseValidatorNode{
config: config,
validatorNum: validatorNum,
index: index,
offset: offset,
started: make(chan struct{}, 1),
}
}
// Start starts a validator client.
func (v *LighthouseValidatorNode) Start(ctx context.Context) error {
binaryPath, found := bazel.FindBinary("external/lighthouse", "lighthouse")
if !found {
log.Info(binaryPath)
log.Error("validator binary not found")
}
_, _, index, _ := v.config, v.validatorNum, v.index, v.offset
kPath := e2e.TestParams.TestPath + fmt.Sprintf("/lighthouse-validator-%d", index)
testNetDir := e2e.TestParams.TestPath + fmt.Sprintf("/lighthouse-testnet-%d", index)
httpPort := e2e.TestParams.Ports.LighthouseBeaconNodeHTTPPort
// In the event we want to run a LH validator with a non LH
// beacon node, we split half the validators to run with
// lighthouse and the other half with prysm.
if v.config.UseValidatorCrossClient && index%2 == 0 {
httpPort = e2e.TestParams.Ports.PrysmBeaconNodeGatewayPort
}
args := []string{
"validator_client",
"--debug-level=debug",
"--init-slashing-protection",
fmt.Sprintf("--datadir=%s", kPath),
fmt.Sprintf("--testnet-dir=%s", testNetDir),
fmt.Sprintf("--beacon-nodes=http://localhost:%d", httpPort+index),
"--suggested-fee-recipient=0x878705ba3f8bc32fcf7f4caa1a35e72af65cf766",
}
if v.config.UseBuilder {
args = append(args, "--builder-proposals")
}
cmd := exec.CommandContext(ctx, binaryPath, args...) // #nosec G204 -- Safe
// Write stderr to log files.
stderr, err := os.Create(path.Join(e2e.TestParams.LogPath, fmt.Sprintf("lighthouse_validator_%d_stderr.log", index)))
if err != nil {
return err
}
defer func() {
if err := stderr.Close(); err != nil {
log.WithError(err).Error("Failed to close stderr file")
}
}()
cmd.Stderr = stderr
log.Infof("Starting lighthouse validator client %d with flags: %s %s", index, binaryPath, strings.Join(args, " "))
if err = cmd.Start(); err != nil {
return err
}
// Mark node as ready.
close(v.started)
v.cmd = cmd
return cmd.Wait()
}
// Started checks whether validator node is started and ready to be queried.
func (v *LighthouseValidatorNode) Started() <-chan struct{} {
return v.started
}
// Pause pauses the component and its underlying process.
func (v *LighthouseValidatorNode) Pause() error {
return v.cmd.Process.Signal(syscall.SIGSTOP)
}
// Resume resumes the component and its underlying process.
func (v *LighthouseValidatorNode) Resume() error {
return v.cmd.Process.Signal(syscall.SIGCONT)
}
// Stop stops the component and its underlying process.
func (v *LighthouseValidatorNode) Stop() error {
return v.cmd.Process.Kill()
}
var _ types.ComponentRunner = &KeystoreGenerator{}
type KeystoreGenerator struct {
started chan struct{}
}
func NewKeystoreGenerator() *KeystoreGenerator {
return &KeystoreGenerator{started: make(chan struct{})}
}
func (k *KeystoreGenerator) Start(_ context.Context) error {
validatorNum := int(params.BeaconConfig().MinGenesisActiveValidatorCount)
lighthouseBeaconNum := e2e.TestParams.LighthouseBeaconNodeCount
prysmBeaconNum := e2e.TestParams.BeaconNodeCount
beaconNodeNum := lighthouseBeaconNum + prysmBeaconNum
if validatorNum%beaconNodeNum != 0 {
return errors.New("validator count is not easily divisible by beacon node count")
}
validatorsPerNode := validatorNum / beaconNodeNum
for i := 0; i < lighthouseBeaconNum; i++ {
offsetIdx := i + prysmBeaconNum
_, err := setupKeystores(i, validatorsPerNode*offsetIdx, validatorsPerNode)
if err != nil {
return err
}
log.Infof("Generated lighthouse keystores from %d onwards with %d keys", validatorsPerNode*offsetIdx, validatorsPerNode)
}
// Mark component as ready.
close(k.started)
return nil
}
func (k *KeystoreGenerator) Started() <-chan struct{} {
return k.started
}
// Pause pauses the component and its underlying process.
func (k *KeystoreGenerator) Pause() error {
// no-op
return nil
}
// Resume resumes the component and its underlying process.
func (k *KeystoreGenerator) Resume() error {
// no-op
return nil
}
// Stop stops the component and its underlying process.
func (k *KeystoreGenerator) Stop() error {
// no-op
return nil
}
func setupKeystores(valClientIdx, startIdx, numOfKeys int) (string, error) {
testNetDir := e2e.TestParams.TestPath + fmt.Sprintf("/lighthouse-validator-%d", valClientIdx)
if err := file.MkdirAll(testNetDir); err != nil {
return "", err
}
secretsPath := filepath.Join(testNetDir, "secrets")
validatorKeystorePath := filepath.Join(testNetDir, "validators")
if err := file.MkdirAll(secretsPath); err != nil {
return "", err
}
if err := file.MkdirAll(validatorKeystorePath); err != nil {
return "", err
}
privKeys, pubKeys, err := interop.DeterministicallyGenerateKeys(uint64(startIdx), uint64(numOfKeys))
if err != nil {
return "", err
}
encryptor := keystorev4.New()
// Use lighthouse's default password for their insecure keystores.
password := "222222222222222222222222222222222222222222222222222"
g, _ := errgroup.WithContext(context.Background())
for i, pkey := range pubKeys {
pubKeyBytes := pkey.Marshal()
marshalledPriv := privKeys[i].Marshal()
g.Go(func() error {
cryptoFields, err := encryptor.Encrypt(marshalledPriv, password)
if err != nil {
return errors.Wrapf(
err,
"could not encrypt secret key for public key %#x",
pubKeyBytes,
)
}
id, err := uuid.NewRandom()
if err != nil {
return err
}
kStore := &keymanager.Keystore{
Crypto: cryptoFields,
ID: id.String(),
Pubkey: fmt.Sprintf("%x", pubKeyBytes),
Version: encryptor.Version(),
Name: encryptor.Name(),
}
fPath := filepath.Join(secretsPath, "0x"+kStore.Pubkey)
if err := file.WriteFile(fPath, []byte(password)); err != nil {
return err
}
keystorePath := filepath.Join(validatorKeystorePath, "0x"+kStore.Pubkey)
if err := file.MkdirAll(keystorePath); err != nil {
return err
}
fPath = filepath.Join(keystorePath, "voting-keystore.json")
encodedFile, err := json.MarshalIndent(kStore, "", "\t")
if err != nil {
return errors.Wrap(err, "could not marshal keystore to JSON file")
}
return file.WriteFile(fPath, encodedFile)
})
}
return testNetDir, g.Wait()
}
func (k *KeystoreGenerator) UnderlyingProcess() *os.Process {
return nil // No subprocess for this component.
}