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backend_test.go
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backend_test.go
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package builder
import (
"bytes"
"encoding/json"
"fmt"
"math/big"
"net/http"
"net/http/httptest"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/beacon"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/log"
"github.com/flashbots/go-boost-utils/bls"
boostTypes "github.com/flashbots/go-boost-utils/types"
"github.com/stretchr/testify/require"
)
func newTestBackend(t *testing.T) (*Backend, *ValidatorPrivateData) {
validator := NewRandomValidator()
sk, _ := bls.GenerateRandomSecretKey()
bDomain := boostTypes.ComputeDomain(boostTypes.DomainTypeAppBuilder, [4]byte{0x02, 0x0, 0x0, 0x0}, boostTypes.Hash{})
genesisValidatorsRoot := boostTypes.Hash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"))
cDomain := boostTypes.ComputeDomain(boostTypes.DomainTypeBeaconProposer, [4]byte{0x02, 0x0, 0x0, 0x0}, genesisValidatorsRoot)
backend := NewBackend(sk, &testBeaconClient{validator}, bDomain, cDomain, true)
// service := NewService("127.0.0.1:31545", backend)
return backend, validator
}
func testRequest(t *testing.T, backend *Backend, method string, path string, payload any) *httptest.ResponseRecorder {
var req *http.Request
var err error
if payload == nil {
req, err = http.NewRequest(method, path, nil)
} else {
payloadBytes, err2 := json.Marshal(payload)
require.NoError(t, err2)
req, err = http.NewRequest(method, path, bytes.NewReader(payloadBytes))
}
require.NoError(t, err)
rr := httptest.NewRecorder()
getRouter(backend).ServeHTTP(rr, req)
return rr
}
func TestValidatorRegistration(t *testing.T) {
backend, _ := newTestBackend(t)
log.Error("rsk", "sk", hexutil.Encode(backend.builderSecretKey.Serialize()))
v := NewRandomValidator()
payload, err := prepareRegistrationMessage(t, backend.builderSigningDomain, v)
require.NoError(t, err)
rr := testRequest(t, backend, "POST", "/eth/v1/builder/validators", payload)
require.Equal(t, http.StatusOK, rr.Code)
require.Contains(t, backend.validators, PubkeyHex(v.Pk.String()))
require.Equal(t, ValidatorData{FeeRecipient: payload[0].Message.FeeRecipient, GasLimit: payload[0].Message.GasLimit, Timestamp: payload[0].Message.Timestamp}, backend.validators[PubkeyHex(v.Pk.String())])
rr = testRequest(t, backend, "POST", "/eth/v1/builder/validators", payload)
require.Equal(t, http.StatusOK, rr.Code)
payload[0].Message.Timestamp += 1
// Invalid signature
payload[0].Signature[len(payload[0].Signature)-1] = 0x00
rr = testRequest(t, backend, "POST", "/eth/v1/builder/validators", payload)
require.Equal(t, http.StatusBadRequest, rr.Code)
require.Equal(t, `{"code":400,"message":"invalid signature"}`+"\n", rr.Body.String())
// TODO: cover all errors
}
func prepareRegistrationMessage(t *testing.T, domain boostTypes.Domain, v *ValidatorPrivateData) ([]boostTypes.SignedValidatorRegistration, error) {
var pubkey boostTypes.PublicKey
pubkey.FromSlice(v.Pk)
require.Equal(t, []byte(v.Pk), pubkey[:])
msg := boostTypes.RegisterValidatorRequestMessage{
FeeRecipient: boostTypes.Address{0x42},
GasLimit: 15_000_000,
Timestamp: uint64(time.Now().Unix()),
Pubkey: pubkey,
}
signature, err := v.Sign(&msg, domain)
require.NoError(t, err)
return []boostTypes.SignedValidatorRegistration{{
Message: &msg,
Signature: signature,
}}, nil
}
func registerValidator(t *testing.T, v *ValidatorPrivateData, backend *Backend) {
payload, err := prepareRegistrationMessage(t, backend.builderSigningDomain, v)
require.NoError(t, err)
log.Info("Registering", "payload", payload[0].Message)
rr := testRequest(t, backend, "POST", "/eth/v1/builder/validators", payload)
require.Equal(t, http.StatusOK, rr.Code)
require.Contains(t, backend.validators, PubkeyHex(v.Pk.String()))
require.Equal(t, ValidatorData{FeeRecipient: payload[0].Message.FeeRecipient, GasLimit: payload[0].Message.GasLimit, Timestamp: payload[0].Message.Timestamp}, backend.validators[PubkeyHex(v.Pk.String())])
}
func TestGetHeader(t *testing.T) {
backend, validator := newTestBackend(t)
forkchoiceData := &beacon.ExecutableDataV1{
ParentHash: common.HexToHash("0xafafafa"),
FeeRecipient: common.Address{0x01},
BlockHash: common.HexToHash("0xbfbfbfb"),
BaseFeePerGas: big.NewInt(12),
ExtraData: []byte{},
LogsBloom: []byte{0x00, 0x05, 0x10},
}
forkchoiceBlock := &types.Block{
Profit: big.NewInt(10),
}
path := fmt.Sprintf("/eth/v1/builder/header/%d/%s/%s", 0, forkchoiceData.ParentHash.Hex(), validator.Pk.String())
rr := testRequest(t, backend, "GET", path, nil)
require.Equal(t, `{"code":400,"message":"unknown validator"}`+"\n", rr.Body.String())
registerValidator(t, validator, backend)
rr = testRequest(t, backend, "GET", path, nil)
require.Equal(t, `{"code":400,"message":"unknown payload"}`+"\n", rr.Body.String())
path = fmt.Sprintf("/eth/v1/builder/header/%d/%s/%s", 0, forkchoiceData.ParentHash.Hex(), NewRandomValidator().Pk.String())
rr = testRequest(t, backend, "GET", path, nil)
require.Equal(t, `{"code":400,"message":"unknown validator"}`+"\n", rr.Body.String())
backend.newSealedBlock(forkchoiceData, forkchoiceBlock)
path = fmt.Sprintf("/eth/v1/builder/header/%d/%s/%s", 0, forkchoiceData.ParentHash.Hex(), validator.Pk.String())
rr = testRequest(t, backend, "GET", path, nil)
require.Equal(t, http.StatusOK, rr.Code)
bid := new(boostTypes.GetHeaderResponse)
err := json.Unmarshal(rr.Body.Bytes(), bid)
require.NoError(t, err)
expectedHeader, err := payloadToPayloadHeader(executableDataToExecutionPayload(forkchoiceData), forkchoiceData)
require.NoError(t, err)
require.EqualValues(t, &boostTypes.BuilderBid{
Header: expectedHeader,
Value: [32]byte(common.BytesToHash(forkchoiceBlock.Profit.Bytes())),
Pubkey: backend.builderPublicKey,
}, bid.Data.Message)
require.Equal(t, forkchoiceData.ParentHash.Bytes(), bid.Data.Message.Header.ParentHash[:], "didn't build on expected parent")
ok, err := boostTypes.VerifySignature(bid.Data.Message, backend.builderSigningDomain, backend.builderPublicKey[:], bid.Data.Signature[:])
require.NoError(t, err)
require.True(t, ok)
}
func TestGetPayload(t *testing.T) {
backend, validator := newTestBackend(t)
forkchoiceData := &beacon.ExecutableDataV1{
ParentHash: common.HexToHash("0xafafafa"),
FeeRecipient: common.Address{0x01},
BlockHash: common.HexToHash("0xbfbfbfb"),
BaseFeePerGas: big.NewInt(12),
ExtraData: []byte{},
}
forkchoiceBlock := &types.Block{
Profit: big.NewInt(10),
}
registerValidator(t, validator, backend)
backend.newSealedBlock(forkchoiceData, forkchoiceBlock)
path := fmt.Sprintf("/eth/v1/builder/header/%d/%s/%s", 0, forkchoiceData.ParentHash.Hex(), validator.Pk.String())
rr := testRequest(t, backend, "GET", path, nil)
require.Equal(t, http.StatusOK, rr.Code)
bid := new(boostTypes.GetHeaderResponse)
err := json.Unmarshal(rr.Body.Bytes(), bid)
require.NoError(t, err)
// Create request payload
msg := &boostTypes.BlindedBeaconBlock{
Slot: 1,
ProposerIndex: 2,
ParentRoot: boostTypes.Root{0x03},
StateRoot: boostTypes.Root{0x04},
Body: &boostTypes.BlindedBeaconBlockBody{
Eth1Data: &boostTypes.Eth1Data{
DepositRoot: boostTypes.Root{0x05},
DepositCount: 5,
BlockHash: boostTypes.Hash{0x06},
},
SyncAggregate: &boostTypes.SyncAggregate{
CommitteeBits: boostTypes.CommitteeBits{0x07},
CommitteeSignature: boostTypes.Signature{0x08},
},
ExecutionPayloadHeader: bid.Data.Message.Header,
},
}
// TODO: test wrong signing domain
signature, err := validator.Sign(msg, backend.proposerSigningDomain)
require.NoError(t, err)
// Call getPayload with invalid signature
rr = testRequest(t, backend, "POST", "/eth/v1/builder/blinded_blocks", boostTypes.SignedBlindedBeaconBlock{
Message: msg,
Signature: boostTypes.Signature{0x09},
})
require.Equal(t, http.StatusBadRequest, rr.Code)
require.Equal(t, `{"code":400,"message":"invalid signature"}`+"\n", rr.Body.String())
// Call getPayload with correct signature
rr = testRequest(t, backend, "POST", "/eth/v1/builder/blinded_blocks", boostTypes.SignedBlindedBeaconBlock{
Message: msg,
Signature: signature,
})
// Verify getPayload response
require.Equal(t, http.StatusOK, rr.Code)
getPayloadResponse := new(boostTypes.GetPayloadResponse)
err = json.Unmarshal(rr.Body.Bytes(), getPayloadResponse)
require.NoError(t, err)
require.Equal(t, bid.Data.Message.Header.BlockHash, getPayloadResponse.Data.BlockHash)
}