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Add a 2 second timeout to fetching eth1data (#5583)

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* Add a 2 second timeout to fetching eth1data
* goimports
* fix
* use package const
* Merge refs/heads/master into graceful-failure-eth1data
* fix test
* Merge refs/heads/master into graceful-failure-eth1data
* Merge refs/heads/master into graceful-failure-eth1data
* Merge refs/heads/master into graceful-failure-eth1data
* Merge refs/heads/master into graceful-failure-eth1data
This commit is contained in:
Preston Van Loon 2020-04-23 08:54:51 -07:00 committed by GitHub
parent d1b0348cdb
commit a3eeced194
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 15 additions and 6 deletions
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15
beacon-chain/rpc/validator/proposer.go
View File

@ -5,6 +5,7 @@ import (
"fmt"
"math/big"
"math/rand"
"time"
"github.com/pkg/errors"
ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
@ -30,6 +31,8 @@ import (
// eth1DataNotification is a latch to stop flooding logs with the same warning.
var eth1DataNotification bool
const eth1dataTimeout = 2 * time.Second
// GetBlock is called by a proposer during its assigned slot to request a block to sign
// by passing in the slot and the signed randao reveal of the slot.
func (vs *Server) GetBlock(ctx context.Context, req *ethpb.BlockRequest) (*ethpb.BeaconBlock, error) {
@ -154,6 +157,9 @@ func (vs *Server) ProposeBlock(ctx context.Context, blk *ethpb.SignedBeaconBlock
// - Subtract that eth1block.number by ETH1_FOLLOW_DISTANCE.
// - This is the eth1block to use for the block proposal.
func (vs *Server) eth1Data(ctx context.Context, slot uint64) (*ethpb.Eth1Data, error) {
ctx, cancel := context.WithTimeout(ctx, eth1dataTimeout)
defer cancel()
if vs.MockEth1Votes {
return vs.mockETH1DataVote(ctx, slot)
}
@ -169,11 +175,13 @@ func (vs *Server) eth1Data(ctx context.Context, slot uint64) (*ethpb.Eth1Data, e
// Look up most recent block up to timestamp
blockNumber, err := vs.Eth1BlockFetcher.BlockNumberByTimestamp(ctx, eth1VotingPeriodStartTime)
if err != nil {
return nil, errors.Wrap(err, "could not get block number from timestamp")
log.WithError(err).Error("Failed to get block number from timestamp")
return vs.randomETH1DataVote(ctx)
}
eth1Data, err := vs.defaultEth1DataResponse(ctx, blockNumber)
if err != nil {
return nil, errors.Wrap(err, "could not get eth1 data from block number")
log.WithError(err).Error("Failed to get eth1 data from block number")
return vs.randomETH1DataVote(ctx)
}
return eth1Data, nil
@ -362,6 +370,9 @@ func (vs *Server) canonicalEth1Data(ctx context.Context, beaconState *stateTrie.
// hash of eth1 block hash that is FOLLOW_DISTANCE back from its
// latest block.
func (vs *Server) defaultEth1DataResponse(ctx context.Context, currentHeight *big.Int) (*ethpb.Eth1Data, error) {
if ctx.Err() != nil {
return nil, ctx.Err()
}
eth1FollowDistance := int64(params.BeaconConfig().Eth1FollowDistance)
ancestorHeight := big.NewInt(0).Sub(currentHeight, big.NewInt(eth1FollowDistance))
blockHash, err := vs.Eth1BlockFetcher.BlockHashByHeight(ctx, ancestorHeight)

6
beacon-chain/rpc/validator/proposer_test.go
View File

@ -5,7 +5,6 @@ import (
"context"
"math/big"
"reflect"
"strings"
"testing"
"github.com/gogo/protobuf/proto"
@ -1130,9 +1129,8 @@ func TestEth1Data_EmptyVotesFetchBlockHashFailure(t *testing.T) {
BlockReceiver: &mock.ChainService{State: beaconState},
HeadFetcher: &mock.ChainService{State: beaconState},
}
want := "could not fetch ETH1_FOLLOW_DISTANCE ancestor"
if _, err := proposerServer.eth1Data(context.Background(), beaconState.Slot()+1); err == nil || !strings.Contains(err.Error(), want) {
t.Errorf("Expected error %v, received %v", want, err)
if _, err := proposerServer.eth1Data(context.Background(), beaconState.Slot()+1); err != nil {
t.Errorf("A failed request should not have returned an error, got %v", err)
}
}