/
lending_transaction.go
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/
lending_transaction.go
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// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package types
import (
"container/heap"
"errors"
"io"
"math/big"
"sync/atomic"
"github.com/XinFinOrg/XDC-Subnet/common"
"github.com/XinFinOrg/XDC-Subnet/rlp"
)
//go:generate gencodec -type txdata -field-override txdataMarshaling -out gen_tx_json.go
var (
// ErrInvalidLengdingSig invalidate signer
ErrInvalidLengdingSig = errors.New("invalid transaction v, r, s values")
errNoSignerLengding = errors.New("missing signing methods")
)
const (
LendingStatusNew = "NEW"
LendingStatusOpen = "OPEN"
LendingStatusPartialFilled = "PARTIAL_FILLED"
LendingStatusFilled = "FILLED"
LendingStatusCancelled = "CANCELLED"
LendingTypeMo = "MO"
LendingTypeLo = "LO"
LendingSideBorrow = "BORROW"
LendingSideInvest = "INVEST"
LendingRePay = "REPAY"
LendingTopup = "TOPUP"
)
// LendingTransaction lending transaction
type LendingTransaction struct {
data lendingtxdata
// caches
hash atomic.Value
size atomic.Value
from atomic.Value
}
type lendingtxdata struct {
AccountNonce uint64 `json:"nonce" gencodec:"required"`
Quantity *big.Int `json:"quantity,omitempty"`
Interest uint64 `json:"interest"`
RelayerAddress common.Address `json:"relayerAddress,omitempty"`
UserAddress common.Address `json:"userAddress,omitempty"`
CollateralToken common.Address `json:"collateralToken,omitempty"`
AutoTopUp bool `json:"autoTopUp,omitempty"`
LendingToken common.Address `json:"lendingToken,omitempty"`
Term uint64 `json:"term"`
Status string `json:"status,omitempty"`
Side string `json:"side,omitempty"`
Type string `json:"type,omitempty"`
LendingId uint64 `json:"lendingId,omitempty"`
LendingTradeId uint64 `json:"tradeId,omitempty"`
ExtraData string `json:"extraData,omitempty"`
// Signature values
V *big.Int `json:"v" gencodec:"required"`
R *big.Int `json:"r" gencodec:"required"`
S *big.Int `json:"s" gencodec:"required"`
// This is only used when marshaling to JSON.
Hash common.Hash `json:"hash"`
}
// IsCreatedLending check if tx is cancelled transaction
func (tx *LendingTransaction) IsCreatedLending() bool {
if (tx.IsLoTypeLending() || tx.IsMoTypeLending()) && tx.Status() == LendingStatusNew {
return true
}
return false
}
// IsCancelledLending check if tx is cancelled transaction
func (tx *LendingTransaction) IsCancelledLending() bool {
if tx.Status() == LendingStatusCancelled {
return true
}
return false
}
// IsRepayLending check if tx is repay lending transaction
func (tx *LendingTransaction) IsRepayLending() bool {
if tx.Type() == LendingRePay {
return true
}
return false
}
// IsTopupLending check if tx is repay lending transaction
func (tx *LendingTransaction) IsTopupLending() bool {
if tx.Type() == LendingTopup {
return true
}
return false
}
// IsMoTypeLending check if tx type is MO lending
func (tx *LendingTransaction) IsMoTypeLending() bool {
if tx.Type() == LendingTypeMo {
return true
}
return false
}
// IsLoTypeLending check if tx type is LO lending
func (tx *LendingTransaction) IsLoTypeLending() bool {
if tx.Type() == LendingTypeLo {
return true
}
return false
}
// EncodeRLP implements rlp.Encoder
func (tx *LendingTransaction) EncodeRLP(w io.Writer) error {
return rlp.Encode(w, &tx.data)
}
// DecodeRLP implements rlp.Decoder
func (tx *LendingTransaction) DecodeRLP(s *rlp.Stream) error {
_, size, _ := s.Kind()
err := s.Decode(&tx.data)
if err == nil {
tx.size.Store(common.StorageSize(rlp.ListSize(size)))
}
return err
}
// Nonce return nonce of account
func (tx *LendingTransaction) Nonce() uint64 { return tx.data.AccountNonce }
// Quantity return quantity of transaction
func (tx *LendingTransaction) Quantity() *big.Int { return tx.data.Quantity }
// RelayerAddress return relayer address transaction
func (tx *LendingTransaction) RelayerAddress() common.Address { return tx.data.RelayerAddress }
// UserAddress return user address transaction
func (tx *LendingTransaction) UserAddress() common.Address { return tx.data.UserAddress }
// Interest return interest percent of transaction
func (tx *LendingTransaction) Interest() uint64 { return tx.data.Interest }
// Duration return period of transaction
func (tx *LendingTransaction) Duration() uint64 { return tx.data.Term }
// Term return period of transaction
func (tx *LendingTransaction) Term() uint64 { return tx.data.Term }
// CollateralToken return collateral token address
func (tx *LendingTransaction) CollateralToken() common.Address { return tx.data.CollateralToken }
// CollateralToken return autoTopUp flag
func (tx *LendingTransaction) AutoTopUp() bool { return tx.data.AutoTopUp }
// LendingToken return lending token address of transaction
func (tx *LendingTransaction) LendingToken() common.Address { return tx.data.LendingToken }
// Status return status of lending transaction
func (tx *LendingTransaction) Status() string { return tx.data.Status }
// Side return side of lending transaction
func (tx *LendingTransaction) Side() string { return tx.data.Side }
// Type return type of lending transaction
func (tx *LendingTransaction) Type() string { return tx.data.Type }
// Type return extraData of lending transaction
func (tx *LendingTransaction) ExtraData() string { return tx.data.ExtraData }
// Signature return signature of lending transaction
func (tx *LendingTransaction) Signature() (V, R, S *big.Int) { return tx.data.V, tx.data.R, tx.data.S }
// LendingHash return hash of lending transaction
func (tx *LendingTransaction) LendingHash() common.Hash { return tx.data.Hash }
// LendingId return lending id
func (tx *LendingTransaction) LendingId() uint64 { return tx.data.LendingId }
// LendingId return lendingTradeId
func (tx *LendingTransaction) LendingTradeId() uint64 { return tx.data.LendingTradeId }
// SetLendingHash set hash of lending transaction hash
func (tx *LendingTransaction) SetLendingHash(h common.Hash) { tx.data.Hash = h }
// From get transaction from
func (tx *LendingTransaction) From() *common.Address {
if tx.data.V != nil {
signer := LendingTxSigner{}
if f, err := LendingSender(signer, tx); err != nil {
return nil
} else {
return &f
}
}
return nil
}
// WithSignature returns a new transaction with the given signature.
// This signature needs to be formatted as described in the yellow paper (v+27).
func (tx *LendingTransaction) WithSignature(signer LendingSigner, sig []byte) (*LendingTransaction, error) {
r, s, v, err := signer.SignatureValues(tx, sig)
if err != nil {
return nil, err
}
cpy := &LendingTransaction{data: tx.data}
cpy.data.R, cpy.data.S, cpy.data.V = r, s, v
return cpy, nil
}
// ImportSignature make lending tx with specific signature
func (tx *LendingTransaction) ImportSignature(V, R, S *big.Int) *LendingTransaction {
if V != nil {
tx.data.V = V
}
if R != nil {
tx.data.R = R
}
if S != nil {
tx.data.S = S
}
return tx
}
// Hash hashes the RLP encoding of tx.
// It uniquely identifies the transaction.
func (tx *LendingTransaction) Hash() common.Hash {
if hash := tx.hash.Load(); hash != nil {
return hash.(common.Hash)
}
v := rlpHash(tx)
tx.hash.Store(v)
return v
}
// CacheHash cache hash
func (tx *LendingTransaction) CacheHash() {
v := rlpHash(tx)
tx.hash.Store(v)
}
// Size returns the true RLP encoded storage size of the transaction, either by
// encoding and returning it, or returning a previsouly cached value.
func (tx *LendingTransaction) Size() common.StorageSize {
if size := tx.size.Load(); size != nil {
return size.(common.StorageSize)
}
c := writeCounter(0)
rlp.Encode(&c, &tx.data)
tx.size.Store(common.StorageSize(c))
return common.StorageSize(c)
}
// NewLendingTransaction init lending from value
func NewLendingTransaction(nonce uint64, quantity *big.Int, interest, duration uint64, relayerAddress, userAddress, lendingToken, collateralToken common.Address, autoTopUp bool, status, side, typeLending string, hash common.Hash, id, tradeId uint64, extraData string) *LendingTransaction {
return newLendingTransaction(nonce, quantity, interest, duration, relayerAddress, userAddress, lendingToken, collateralToken, autoTopUp, status, side, typeLending, hash, id, tradeId, extraData)
}
func newLendingTransaction(nonce uint64, quantity *big.Int, interest, duration uint64, relayerAddress, userAddress, lendingToken, collateralToken common.Address, autoTopUp bool, status, side, typeLending string, hash common.Hash, id, tradeId uint64, extraData string) *LendingTransaction {
d := lendingtxdata{
AccountNonce: nonce,
Quantity: new(big.Int),
Interest: interest,
Term: duration,
RelayerAddress: relayerAddress,
UserAddress: userAddress,
LendingToken: lendingToken,
CollateralToken: collateralToken,
AutoTopUp: autoTopUp,
Status: status,
Side: side,
Type: typeLending,
Hash: hash,
LendingId: id,
LendingTradeId: tradeId,
ExtraData: extraData,
V: new(big.Int),
R: new(big.Int),
S: new(big.Int),
}
if quantity != nil {
d.Quantity.Set(quantity)
}
return &LendingTransaction{data: d}
}
// LendingTransactions is a Transaction slice type for basic sorting.
type LendingTransactions []*LendingTransaction
// Len returns the length of s.
func (s LendingTransactions) Len() int { return len(s) }
// Swap swaps the i'th and the j'th element in s.
func (s LendingTransactions) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
// GetRlp implements Rlpable and returns the i'th element of s in rlp.
func (s LendingTransactions) GetRlp(i int) []byte {
enc, _ := rlp.EncodeToBytes(s[i])
return enc
}
// LendingTxDifference returns a new set t which is the difference between a to b.
func LendingTxDifference(a, b LendingTransactions) (keep LendingTransactions) {
keep = make(LendingTransactions, 0, len(a))
remove := make(map[common.Hash]struct{})
for _, tx := range b {
remove[tx.Hash()] = struct{}{}
}
for _, tx := range a {
if _, ok := remove[tx.Hash()]; !ok {
keep = append(keep, tx)
}
}
return keep
}
// LendingTxByNonce sorted lending by nonce defined
type LendingTxByNonce LendingTransactions
func (s LendingTxByNonce) Len() int { return len(s) }
func (s LendingTxByNonce) Less(i, j int) bool { return s[i].data.AccountNonce < s[j].data.AccountNonce }
func (s LendingTxByNonce) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s *LendingTxByNonce) Push(x interface{}) {
*s = append(*s, x.(*LendingTransaction))
}
func (s *LendingTxByNonce) Pop() interface{} {
old := *s
n := len(old)
x := old[n-1]
*s = old[0 : n-1]
return x
}
// LendingTransactionByNonce sort transaction by nonce
type LendingTransactionByNonce struct {
txs map[common.Address]LendingTransactions
heads LendingTxByNonce
signer LendingSigner
}
// NewLendingTransactionByNonce sort transaction by nonce
func NewLendingTransactionByNonce(signer LendingSigner, txs map[common.Address]LendingTransactions) *LendingTransactionByNonce {
// Initialize a price based heap with the head transactions
heads := make(LendingTxByNonce, 0, len(txs))
for from, accTxs := range txs {
heads = append(heads, accTxs[0])
// Ensure the sender address is from the signer
acc, _ := LendingSender(signer, accTxs[0])
txs[acc] = accTxs[1:]
if from != acc {
delete(txs, from)
}
}
heap.Init(&heads)
// Assemble and return the transaction set
return &LendingTransactionByNonce{
txs: txs,
heads: heads,
signer: signer,
}
}
// Peek returns the next transaction by price.
func (t *LendingTransactionByNonce) Peek() *LendingTransaction {
if len(t.heads) == 0 {
return nil
}
return t.heads[0]
}
// Shift replaces the current best head with the next one from the same account.
func (t *LendingTransactionByNonce) Shift() {
acc, _ := LendingSender(t.signer, t.heads[0])
if txs, ok := t.txs[acc]; ok && len(txs) > 0 {
t.heads[0], t.txs[acc] = txs[0], txs[1:]
heap.Fix(&t.heads, 0)
} else {
heap.Pop(&t.heads)
}
}
// Pop removes the best transaction, *not* replacing it with the next one from
// the same account. This should be used when a transaction cannot be executed
// and hence all subsequent ones should be discarded from the same account.
func (t *LendingTransactionByNonce) Pop() {
heap.Pop(&t.heads)
}