/
node.go
198 lines (183 loc) · 6.04 KB
/
node.go
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// Package evaluators defines functions which can peer into end to end
// tests to determine if a chain is running as required.
package evaluators
import (
"bytes"
"context"
"fmt"
"io"
"net/http"
"time"
"github.com/pkg/errors"
"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
e2e "github.com/prysmaticlabs/prysm/v4/testing/endtoend/params"
"github.com/prysmaticlabs/prysm/v4/testing/endtoend/policies"
e2etypes "github.com/prysmaticlabs/prysm/v4/testing/endtoend/types"
"golang.org/x/sync/errgroup"
"google.golang.org/grpc"
"google.golang.org/protobuf/types/known/emptypb"
)
// Allow a very short delay after disconnecting to prevent connection refused issues.
var connTimeDelay = 50 * time.Millisecond
// PeersConnect checks all beacon nodes and returns whether they are connected to each other as peers.
var PeersConnect = e2etypes.Evaluator{
Name: "peers_connect_epoch_%d",
Policy: policies.OnEpoch(0),
Evaluation: peersConnect,
}
// HealthzCheck pings healthz and errors if it doesn't have the expected OK status.
var HealthzCheck = e2etypes.Evaluator{
Name: "healthz_check_epoch_%d",
Policy: policies.AfterNthEpoch(0),
Evaluation: healthzCheck,
}
// FinishedSyncing returns whether the beacon node with the given rpc port has finished syncing.
var FinishedSyncing = e2etypes.Evaluator{
Name: "finished_syncing_%d",
Policy: policies.AllEpochs,
Evaluation: finishedSyncing,
}
// AllNodesHaveSameHead ensures all nodes have the same head epoch. Checks finality and justification as well.
// Not checking head block root as it may change irregularly for the validator connected nodes.
var AllNodesHaveSameHead = e2etypes.Evaluator{
Name: "all_nodes_have_same_head_%d",
Policy: policies.AllEpochs,
Evaluation: allNodesHaveSameHead,
}
func healthzCheck(_ *e2etypes.EvaluationContext, conns ...*grpc.ClientConn) error {
count := len(conns)
for i := 0; i < count; i++ {
resp, err := http.Get(fmt.Sprintf("http://localhost:%d/healthz", e2e.TestParams.Ports.PrysmBeaconNodeMetricsPort+i))
if err != nil {
// Continue if the connection fails, regular flake.
continue
}
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return err
}
return fmt.Errorf("expected status code OK for beacon node %d, received %v with body %s", i, resp.StatusCode, body)
}
if err = resp.Body.Close(); err != nil {
return err
}
time.Sleep(connTimeDelay)
}
for i := 0; i < count; i++ {
resp, err := http.Get(fmt.Sprintf("http://localhost:%d/healthz", e2e.TestParams.Ports.ValidatorMetricsPort+i))
if err != nil {
// Continue if the connection fails, regular flake.
continue
}
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return err
}
return fmt.Errorf("expected status code OK for validator client %d, received %v with body %s", i, resp.StatusCode, body)
}
if err = resp.Body.Close(); err != nil {
return err
}
time.Sleep(connTimeDelay)
}
return nil
}
func peersConnect(_ *e2etypes.EvaluationContext, conns ...*grpc.ClientConn) error {
if len(conns) == 1 {
return nil
}
ctx := context.Background()
for _, conn := range conns {
nodeClient := eth.NewNodeClient(conn)
peersResp, err := nodeClient.ListPeers(ctx, &emptypb.Empty{})
if err != nil {
return err
}
expectedPeers := len(conns) - 1 + e2e.TestParams.LighthouseBeaconNodeCount
if expectedPeers != len(peersResp.Peers) {
return fmt.Errorf("unexpected amount of peers, expected %d, received %d", expectedPeers, len(peersResp.Peers))
}
time.Sleep(connTimeDelay)
}
return nil
}
func finishedSyncing(_ *e2etypes.EvaluationContext, conns ...*grpc.ClientConn) error {
conn := conns[0]
syncNodeClient := eth.NewNodeClient(conn)
syncStatus, err := syncNodeClient.GetSyncStatus(context.Background(), &emptypb.Empty{})
if err != nil {
return err
}
if syncStatus.Syncing {
return errors.New("expected node to have completed sync")
}
return nil
}
func allNodesHaveSameHead(_ *e2etypes.EvaluationContext, conns ...*grpc.ClientConn) error {
headEpochs := make([]primitives.Epoch, len(conns))
justifiedRoots := make([][]byte, len(conns))
prevJustifiedRoots := make([][]byte, len(conns))
finalizedRoots := make([][]byte, len(conns))
chainHeads := make([]*eth.ChainHead, len(conns))
g, _ := errgroup.WithContext(context.Background())
for i, conn := range conns {
conIdx := i
currConn := conn
g.Go(func() error {
beaconClient := eth.NewBeaconChainClient(currConn)
chainHead, err := beaconClient.GetChainHead(context.Background(), &emptypb.Empty{})
if err != nil {
return errors.Wrapf(err, "connection number=%d", conIdx)
}
headEpochs[conIdx] = chainHead.HeadEpoch
justifiedRoots[conIdx] = chainHead.JustifiedBlockRoot
prevJustifiedRoots[conIdx] = chainHead.PreviousJustifiedBlockRoot
finalizedRoots[conIdx] = chainHead.FinalizedBlockRoot
chainHeads[conIdx] = chainHead
return nil
})
}
if err := g.Wait(); err != nil {
return err
}
for i := 0; i < len(conns); i++ {
if headEpochs[0] != headEpochs[i] {
return fmt.Errorf(
"received conflicting head epochs on node %d, expected %d, received %d",
i,
headEpochs[0],
headEpochs[i],
)
}
if !bytes.Equal(justifiedRoots[0], justifiedRoots[i]) {
return fmt.Errorf(
"received conflicting justified block roots on node %d, expected %#x, received %#x: %s and %s",
i,
justifiedRoots[0],
justifiedRoots[i],
chainHeads[0].String(),
chainHeads[i].String(),
)
}
if !bytes.Equal(prevJustifiedRoots[0], prevJustifiedRoots[i]) {
return fmt.Errorf(
"received conflicting previous justified block roots on node %d, expected %#x, received %#x",
i,
prevJustifiedRoots[0],
prevJustifiedRoots[i],
)
}
if !bytes.Equal(finalizedRoots[0], finalizedRoots[i]) {
return fmt.Errorf(
"received conflicting finalized epoch roots on node %d, expected %#x, received %#x",
i,
finalizedRoots[0],
finalizedRoots[i],
)
}
}
return nil
}