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Add txselector base

feature/sql-semaphore1
arnaucube 4 years ago
parent
a9c77e9607
commit
e77599dac3
6 changed files with 498 additions and 0 deletions
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  1. +151
    -0
      go.sum
  2. +40
    -0
      txselector/common/tmp.go
  3. +33
    -0
      txselector/mock/mock.go
  4. +142
    -0
      txselector/txselector.go
  5. +116
    -0
      txselector/txselector_test.go
  6. +16
    -0
      txselector/utils.go

+ 151
- 0
go.sum
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github.com/wsddn/go-ecdh v0.0.0-20161211032359-48726bab9208/go.mod h1:IotVbo4F+mw0EzQ08zFqg7pK3FebNXpaMsRy2RT+Ees=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181011144130-49bb7cea24b1/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHNjg+BDxry382+8OKon8SEWiKktQR07RKPsv1c=
gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=

+ 40
- 0
txselector/common/tmp.go
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@ -0,0 +1,40 @@
package common
import (
"math/big"
ethCommon "github.com/ethereum/go-ethereum/common"
)
// WIP this will be from hermeznetwork/common
type Tx struct {
FromAx [32]byte
FromAy [32]byte
FromEthAddr ethCommon.Address
ToAx [32]byte
ToAy [32]byte
ToEthAddr ethCommon.Address
OnChain bool
RqOffset []byte
NewAccount bool
TokenID uint32
LoadAmount [3]byte
Amount [3]byte
Nonce uint64
UserFee uint8
UserFeeAbsolute uint64
R8x [32]byte
R8y [32]byte
S [32]byte
RqTxData [32]byte
}
// WIP this will be from hermeznetwork/common
type Account struct {
EthAddr ethCommon.Address
TokenID uint32
Idx uint32
Nonce uint64
Balance *big.Int
// Ax, Ay
}

+ 33
- 0
txselector/mock/mock.go
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@ -0,0 +1,33 @@
package mock
import (
"github.com/hermeznetwork/hermez-node/tx-selector/common"
)
type MockDB struct {
Txs map[uint64][]common.Tx
// AccountDB is the LocalAccountDB copy of the original AccountDB
AccountDB map[[36]byte]common.Account // [36]byte is tx.ToEthAddr + tx.TokenID
PendingRegistersDB map[[36]byte]common.Account // [36]byte is tx.ToEthAddr + tx.TokenID
}
func New() *MockDB {
return &MockDB{
Txs: make(map[uint64][]common.Tx),
AccountDB: make(map[[36]byte]common.Account),
PendingRegistersDB: make(map[[36]byte]common.Account),
}
}
func (m *MockDB) AddTx(batchID uint64, tx common.Tx) {
if _, ok := m.Txs[batchID]; !ok {
m.Txs[batchID] = []common.Tx{}
}
m.Txs[batchID] = append(m.Txs[batchID], tx)
}
func (m *MockDB) GetTxs(batchID uint64) []common.Tx {
return m.Txs[batchID]
}

+ 142
- 0
txselector/txselector.go
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@ -0,0 +1,142 @@
package txselector
import (
"sort"
"github.com/hermeznetwork/hermez-node/tx-selector/common"
"github.com/hermeznetwork/hermez-node/tx-selector/mock"
)
// txs implements the interface Sort for an array of Tx
type txs []common.Tx
func (t txs) Len() int {
return len(t)
}
func (t txs) Swap(i, j int) {
t[i], t[j] = t[j], t[i]
}
func (t txs) Less(i, j int) bool {
return t[i].UserFeeAbsolute > t[j].UserFeeAbsolute
}
type TxSelector struct {
// NMax is the maximum L1-user-tx for a batch
NMax uint64
// MMax is the maximum L1-operator-tx for a batch
MMax uint64
// PMax is the maximum L2-tx for a batch
PMax uint64
// DB is a pointer to the database interface
DB *mock.MockDB
}
func NewTxSelector(db *mock.MockDB, nMax, mMax, pMax uint64) *TxSelector {
return &TxSelector{
NMax: nMax,
MMax: mMax,
PMax: pMax,
DB: db,
}
}
func (txsel *TxSelector) updateLocalAccountDB(batchId uint64) error {
// if batchID > max(localAccountDB.BatchID) + 1
// make a checkpoint of AccountDB at BatchID to a localAccountDB
// use localAccountDB[inputBatchID-1]
return nil
}
func (txsel *TxSelector) GetL2TxSelection(batchID uint64) ([]common.Tx, error) {
err := txsel.updateLocalAccountDB(batchID)
if err != nil {
return nil, err
}
// get pending l2-tx from tx-pool
txsRaw := txsel.DB.GetTxs(batchID)
// discard the txs that don't have an Account in the AccountDB
var validTxs txs
for _, tx := range txsRaw {
accountID := getAccountID(tx.ToEthAddr, tx.TokenID)
if _, ok := txsel.DB.AccountDB[accountID]; ok {
validTxs = append(validTxs, tx)
}
}
// get most profitable L2-tx (len<NMax)
txs := txsel.getL2Profitable(validTxs)
// apply L2-tx to local AccountDB, make checkpoint tagged with BatchID
// update balances
// update nonces
// return selected txs
return txs, nil
}
func (txsel *TxSelector) GetL1L2TxSelection(batchID uint64, l1txs []common.Tx) ([]common.Tx, []common.Tx, []common.Tx, error) {
err := txsel.updateLocalAccountDB(batchID)
if err != nil {
return nil, nil, nil, err
}
// apply l1-user-tx to localAccountDB
// create new leaves
// update balances
// update nonces
// get pending l2-tx from tx-pool
txsRaw := txsel.DB.GetTxs(batchID)
// discard the txs that don't have an Account in the AccountDB
// neither appear in the PendingRegistersDB
var validTxs txs
for _, tx := range txsRaw {
accountID := getAccountID(tx.ToEthAddr, tx.TokenID)
exist := txsel.checkIfAccountExist(accountID)
if exist {
validTxs = append(validTxs, tx)
}
}
// get most profitable L2-tx (len<NMax)
l2txs := txsel.getL2Profitable(validTxs)
// prepare (from the selected l2txs) pending to register from the PendingRegistersDB
var pendingRegisters []common.Account
for _, tx := range l2txs {
accountID := getAccountID(tx.ToEthAddr, tx.TokenID)
if toRegister, ok := txsel.DB.PendingRegistersDB[accountID]; ok {
pendingRegisters = append(pendingRegisters, toRegister)
}
}
// create L1-operator-tx for each L2-tx selected in which the recipient does not have account
l1OperatorTxs := txsel.createL1OperatorTxForL2Tx(pendingRegisters) // only with the L2-tx selected ones
return l1txs, l2txs, l1OperatorTxs, nil
}
func (txsel *TxSelector) checkIfAccountExist(accountID [36]byte) bool {
// check if account exist in AccountDB
if _, ok := txsel.DB.AccountDB[accountID]; ok {
return true
}
// check if account is pending to register
if _, ok := txsel.DB.PendingRegistersDB[accountID]; ok {
return true
}
return false
}
func (txsel *TxSelector) getL2Profitable(txs txs) txs {
sort.Sort(txs)
return txs[:txsel.PMax]
}
func (txsel *TxSelector) createL1OperatorTxForL2Tx(accounts []common.Account) txs {
//
return txs{}
}

+ 116
- 0
txselector/txselector_test.go
View File

@ -0,0 +1,116 @@
package txselector
import (
"fmt"
"math/big"
"testing"
ethCommon "github.com/ethereum/go-ethereum/common"
"github.com/hermeznetwork/hermez-node/tx-selector/common"
"github.com/hermeznetwork/hermez-node/tx-selector/mock"
"github.com/stretchr/testify/assert"
)
func initMockDB() *mock.MockDB {
m := mock.New()
txs := []common.Tx{
{
FromEthAddr: ethCommon.HexToAddress("0x859c3d0d5aD917F146fF6654A4C676f1ddeCE26a"),
ToEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
TokenID: 1,
Nonce: 1,
UserFeeAbsolute: 1,
},
{
FromEthAddr: ethCommon.HexToAddress("0x859c3d0d5aD917F146fF6654A4C676f1ddeCE26a"),
ToEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
TokenID: 1,
Nonce: 2,
UserFeeAbsolute: 3,
},
{
FromEthAddr: ethCommon.HexToAddress("0x859c3d0d5aD917F146fF6654A4C676f1ddeCE26a"),
ToEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
TokenID: 1,
Nonce: 4,
UserFeeAbsolute: 6,
},
{
FromEthAddr: ethCommon.HexToAddress("0x859c3d0d5aD917F146fF6654A4C676f1ddeCE26a"),
ToEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
TokenID: 1,
Nonce: 4,
UserFeeAbsolute: 4,
},
{
FromEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
ToEthAddr: ethCommon.HexToAddress("0x859c3d0d5aD917F146fF6654A4C676f1ddeCE26a"),
TokenID: 1,
Nonce: 1,
UserFeeAbsolute: 4,
},
{
FromEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
ToEthAddr: ethCommon.HexToAddress("0x859c3d0d5aD917F146fF6654A4C676f1ddeCE26a"),
TokenID: 1,
Nonce: 2,
UserFeeAbsolute: 3,
},
{
FromEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
ToEthAddr: ethCommon.HexToAddress("0x859c3d0d5aD917F146fF6654A4C676f1ddeCE26a"),
TokenID: 1,
Nonce: 3,
UserFeeAbsolute: 5,
},
{
// this tx will not be selected, as the ToEthAddr does not have an account
FromEthAddr: ethCommon.HexToAddress("0x6950E814B82d276DB5Fa7f34253CfeE1387fe03E"),
ToEthAddr: ethCommon.HexToAddress("0x4a2CFDF534725D8D6e07Af97B237Fff19BDb3c93"),
TokenID: 1,
Nonce: 4,
UserFeeAbsolute: 5,
},
}
// n := 0
nBatch := 0
for i := 0; i < len(txs); i++ {
// for i := 0; i < nBatch; i++ {
// for j := 0; j < len(txs)/nBatch; j++ {
// store tx
m.AddTx(uint64(nBatch), txs[i])
// store account if not yet
accountID := getAccountID(txs[i].FromEthAddr, txs[i].TokenID)
if _, ok := m.AccountDB[accountID]; !ok {
account := common.Account{
EthAddr: txs[i].FromEthAddr,
TokenID: txs[i].TokenID,
Nonce: 0,
Balance: big.NewInt(0),
}
m.AccountDB[accountID] = account
}
// n++
// }
}
return m
}
func TestGetL2TxSelection(t *testing.T) {
mockDB := initMockDB()
txsel := NewTxSelector(mockDB, 3, 3, 3)
txs, err := txsel.GetL2TxSelection(0)
assert.Nil(t, err)
for _, tx := range txs {
fmt.Println(tx.FromEthAddr.String(), tx.ToEthAddr.String(), tx.UserFeeAbsolute)
}
assert.Equal(t, 3, len(txs))
assert.Equal(t, uint64(6), txs[0].UserFeeAbsolute)
assert.Equal(t, uint64(5), txs[1].UserFeeAbsolute)
assert.Equal(t, uint64(4), txs[2].UserFeeAbsolute)
}

+ 16
- 0
txselector/utils.go
View File

@ -0,0 +1,16 @@
package txselector
import (
"encoding/binary"
ethCommon "github.com/ethereum/go-ethereum/common"
)
func getAccountID(addr ethCommon.Address, tokenID uint32) [36]byte {
var tokenIDBytes [4]byte
binary.LittleEndian.PutUint32(tokenIDBytes[:], tokenID)
accountIDBytes := append(addr[:], tokenIDBytes[:]...)
var accountID [36]byte
copy(accountID[:], accountIDBytes[:36])
return accountID
}

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