/
trade.go
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/
trade.go
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// Copyright Fuzamei Corp. 2018 All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package executor
/*
trade执行器支持trade的创建和交易,
主要提供操作有以下几种:
1)挂单出售;
2)购买指定的卖单;
3)撤销卖单;
4)挂单购买;
5)出售指定的买单;
6)撤销买单;
*/
import (
log "github.com/33cn/chain33/common/log/log15"
"github.com/33cn/chain33/common/db/table"
drivers "github.com/33cn/chain33/system/dapp"
"github.com/33cn/chain33/types"
pty "github.com/33cn/plugin/plugin/dapp/trade/types"
)
var (
tradelog = log.New("module", "execs.trade")
defaultAssetExec = "token"
driverName = "trade"
defaultPriceExec = "coins"
)
// Init : 注册当前trade合约
func Init(name string, cfg *types.Chain33Config, sub []byte) {
drivers.Register(cfg, GetName(), newTrade, cfg.GetDappFork(driverName, "Enable"))
InitExecType()
}
//InitExecType ...
func InitExecType() {
ety := types.LoadExecutorType(driverName)
ety.InitFuncList(types.ListMethod(&trade{}))
}
// GetName : 获取trade合约名字
func GetName() string {
return newTrade().GetName()
}
type trade struct {
drivers.DriverBase
}
func newTrade() drivers.Driver {
t := &trade{}
t.SetChild(t)
t.SetExecutorType(types.LoadExecutorType(driverName))
return t
}
func (t *trade) GetDriverName() string {
return driverName
}
func (t *trade) getSellOrderFromDb(sellID []byte) *pty.SellOrder {
value, err := t.GetStateDB().Get(sellID)
if err != nil {
panic(err)
}
var sellorder pty.SellOrder
types.Decode(value, &sellorder)
return &sellorder
}
// sell limit
func (t *trade) saveSell(base *pty.ReceiptSellBase, ty int32, tx *types.Transaction, txIndex string, ldb *table.Table) {
sellorder := t.getSellOrderFromDb([]byte(base.SellID))
if ty == pty.TyLogTradeSellLimit && sellorder.SoldBoardlot == 0 {
newOrder := t.genSellLimit(tx, base, sellorder, txIndex)
tradelog.Info("Table", "sell-add", newOrder)
ldb.Add(newOrder)
} else {
t.updateSellLimit(tx, base, sellorder, txIndex, ldb)
}
}
func (t *trade) deleteSell(base *pty.ReceiptSellBase, ty int32, tx *types.Transaction, txIndex string, ldb *table.Table, tradedBoardlot int64) {
sellorder := t.getSellOrderFromDb([]byte(base.SellID))
if ty == pty.TyLogTradeSellLimit && sellorder.SoldBoardlot == 0 {
ldb.Del([]byte(txIndex))
} else {
t.rollBackSellLimit(tx, base, sellorder, txIndex, ldb, tradedBoardlot)
}
}
func (t *trade) saveBuy(receiptTradeBuy *pty.ReceiptBuyBase, tx *types.Transaction, txIndex string, ldb *table.Table) {
order := t.genBuyMarket(tx, receiptTradeBuy, txIndex)
tradelog.Debug("trade BuyMarket save local", "order", order)
ldb.Add(order)
}
func (t *trade) deleteBuy(receiptTradeBuy *pty.ReceiptBuyBase, txIndex string, ldb *table.Table) {
ldb.Del([]byte(txIndex))
}
// BuyLimit Local
func (t *trade) getBuyOrderFromDb(buyID []byte) *pty.BuyLimitOrder {
value, err := t.GetStateDB().Get(buyID)
if err != nil {
panic(err)
}
var buyOrder pty.BuyLimitOrder
types.Decode(value, &buyOrder)
return &buyOrder
}
func (t *trade) saveBuyLimit(buy *pty.ReceiptBuyBase, ty int32, tx *types.Transaction, txIndex string, ldb *table.Table) {
buyOrder := t.getBuyOrderFromDb([]byte(buy.BuyID))
tradelog.Debug("Table", "buy-add", buyOrder)
if buyOrder.Status == pty.TradeOrderStatusOnBuy && buy.BoughtBoardlot == 0 {
order := t.genBuyLimit(tx, buy, txIndex)
tradelog.Info("Table", "buy-add", order)
ldb.Add(order)
} else {
t.updateBuyLimit(tx, buy, buyOrder, txIndex, ldb)
}
}
func (t *trade) deleteBuyLimit(buy *pty.ReceiptBuyBase, ty int32, tx *types.Transaction, txIndex string, ldb *table.Table, traded int64) {
buyOrder := t.getBuyOrderFromDb([]byte(buy.BuyID))
if ty == pty.TyLogTradeBuyLimit && buy.BoughtBoardlot == 0 {
ldb.Del([]byte(txIndex))
} else {
t.rollbackBuyLimit(tx, buy, buyOrder, txIndex, ldb, traded)
}
}
func (t *trade) saveSellMarket(receiptTradeBuy *pty.ReceiptSellBase, tx *types.Transaction, txIndex string, ldb *table.Table) {
order := t.genSellMarket(tx, receiptTradeBuy, txIndex)
ldb.Add(order)
}
func (t *trade) deleteSellMarket(receiptTradeBuy *pty.ReceiptSellBase, txIndex string, ldb *table.Table) {
ldb.Del([]byte(txIndex))
}
// CheckReceiptExecOk return true to check if receipt ty is ok
func (t *trade) CheckReceiptExecOk() bool {
return true
}