add exchange dapp

plugin/dapp/exchange/cmd/Makefile

+all:
+	chmod +x ./build.sh
+	./build.sh $(OUT) $(FLAG)

plugin/dapp/exchange/cmd/build.sh

+#!/bin/sh
+# 官方ci集成脚本
+strpwd=$(pwd)
+strcmd=${strpwd##*dapp/}
+strapp=${strcmd%/cmd*}
+
+OUT_DIR="${1}/$strapp"
+#FLAG=$2
+
+mkdir -p "${OUT_DIR}"
+cp ./build/* "${OUT_DIR}"

plugin/dapp/exchange/commands/commands.go

+/*Package commands implement dapp client commands*/
+package commands
+
+import (
+	"github.com/spf13/cobra"
+)
+
+/*
+ * 实现合约对应客户端
+ */
+
+// Cmd exchange client command
+func Cmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "exchange",
+		Short: "exchange command",
+		Args:  cobra.MinimumNArgs(1),
+	}
+	cmd.AddCommand(
+	//add sub command
+	)
+	return cmd
+}

plugin/dapp/exchange/executor/exchange.go

+package executor
+
+import (
+	log "github.com/33cn/chain33/common/log/log15"
+	drivers "github.com/33cn/chain33/system/dapp"
+	"github.com/33cn/chain33/types"
+	exchangetypes "github.com/33cn/plugin/plugin/dapp/exchange/types"
+)
+
+/*
+ * 执行器相关定义
+ * 重载基类相关接口
+ */
+
+var (
+	//日志
+	elog = log.New("module", "exchange.executor")
+)
+
+var driverName = exchangetypes.ExchangeX
+
+// Init register dapp
+func Init(name string, cfg *types.Chain33Config, sub []byte) {
+	drivers.Register(cfg, GetName(), newExchange, cfg.GetDappFork(driverName, "Enable"))
+	InitExecType()
+}
+
+// InitExecType Init Exec Type
+func InitExecType() {
+	ety := types.LoadExecutorType(driverName)
+	ety.InitFuncList(types.ListMethod(&exchange{}))
+}
+
+type exchange struct {
+	drivers.DriverBase
+}
+
+func newExchange() drivers.Driver {
+	t := &exchange{}
+	t.SetChild(t)
+	t.SetExecutorType(types.LoadExecutorType(driverName))
+	return t
+}
+
+// GetName get driver name
+func GetName() string {
+	return newExchange().GetName()
+}
+
+func (e *exchange) GetDriverName() string {
+	return driverName
+}
+
+// CheckTx 实现自定义检验交易接口，供框架调用
+func (e *exchange) CheckTx(tx *types.Transaction, index int) error {
+	//发送交易的时候就检查payload,做严格的参数检查
+	var exchange exchangetypes.ExchangeAction
+	types.Decode(tx.GetPayload(), &exchange)
+	if exchange.Ty == exchangetypes.TyLimitOrderAction {
+		limitOrder := exchange.GetLimitOrder()
+		left := limitOrder.GetLeftAsset()
+		right := limitOrder.GetRightAsset()
+		price := Truncate(limitOrder.GetPrice())
+		amount := limitOrder.GetAmount()
+		op := limitOrder.GetOp()
+		if !CheckExchangeAsset(left, right) {
+			return exchangetypes.ErrAsset
+		}
+		if !CheckPrice(price) {
+			return exchangetypes.ErrAssetPrice
+		}
+		if !types.CheckAmount(amount) {
+			return exchangetypes.ErrAssetAmount
+		}
+		if !CheckOp(op) {
+			return exchangetypes.ErrAssetOp
+		}
+	}
+	return nil
+}
+
+// GetPayloadValue get payload value
+func (e *exchange) GetPayloadValue() types.Message {
+	return &exchangetypes.ExchangeAction{}
+}

plugin/dapp/exchange/executor/exchange_test.go

+package executor
+
+import (
+	"testing"
+)
+
+func TestTruncate(t *testing.T) {
+	a:=float32(1.00000212000000000001)
+	b:=float32(0.34567)
+	c:=float32(1234)
+	t.Log(Truncate(a))
+	t.Log(Truncate(b))
+	t.Log(Truncate(c))
+}
\ No newline at end of file

plugin/dapp/exchange/executor/exchangedb.go

+package executor
+
+import (
+	"fmt"
+	"github.com/33cn/chain33/account"
+	"github.com/33cn/chain33/client"
+	"github.com/33cn/chain33/common"
+	dbm "github.com/33cn/chain33/common/db"
+	"github.com/33cn/chain33/system/dapp"
+	"github.com/33cn/chain33/types"
+	et "github.com/33cn/plugin/plugin/dapp/exchange/types"
+	"github.com/gogo/protobuf/proto"
+	"math"
+)
+
+// Action action struct
+type Action struct {
+	statedb   dbm.KV
+	txhash    []byte
+	fromaddr  string
+	blocktime int64
+	height    int64
+	execaddr  string
+	localDB   dbm.Lister
+	index     int
+	api       client.QueueProtocolAPI
+}
+
+func NewAction(e *exchange, tx *types.Transaction, index int) *Action {
+	hash := tx.Hash()
+	fromaddr := tx.From()
+	return &Action{e.GetStateDB(), hash, fromaddr,
+		e.GetBlockTime(), e.GetHeight(), dapp.ExecAddress(string(tx.Execer)), e.GetLocalDB(), index, e.GetAPI()}
+}
+
+//GetIndex get index
+func (a *Action) GetIndex() int64 {
+	return a.height*types.MaxTxsPerBlock + int64(a.index)
+}
+
+//GetKVSet get kv set
+func (a *Action) GetKVSet(order *et.Order) (kvset []*types.KeyValue) {
+	kvset = append(kvset, &types.KeyValue{Key: calcOrderKey(order.OrderID), Value: types.Encode(order)})
+	return kvset
+}
+
+//缓存
+func (a *Action) updateStateDBCache(order *et.Order) {
+	a.statedb.Set(calcOrderKey(order.OrderID), types.Encode(order))
+}
+
+//反转
+func (a *Action) OpSwap(op int32) int32 {
+	if op == et.OpBuy {
+		return et.OpSell
+	} else {
+		return et.OpBuy
+	}
+}
+
+//计算实际花费
+func (a *Action) calcActualCost(op int32, amount int64, price float32) int64 {
+	if op == et.OpBuy {
+		return int64(float32(amount) * Truncate(price))
+	}
+	return amount
+}
+
+//price 精度允许范围小数点后面7位数,整数是1e8
+func CheckPrice(price float32) bool {
+	if (Truncate(price) > 1e8) || (Truncate(price)*float32(1e8) <= 0) {
+		return false
+	}
+	return true
+}
+func CheckOp(op int32) bool {
+	if op == et.OpBuy || op == et.OpSell {
+		return true
+	}
+	return false
+}
+
+func CheckCount(count int32) bool {
+	if count > 20 {
+		return false
+	}
+	return true
+}
+
+func CheckDirection(direction int32) bool {
+	if direction == et.ListASC || direction == et.ListDESC {
+		return true
+	}
+	return false
+}
+
+func CheckStatus(status int32) bool {
+	if status == et.Ordered || status == et.Completed || status == et.Revoked {
+		return true
+	}
+	return false
+}
+
+//检查交易得资产是否合法
+func CheckExchangeAsset(left, right *et.Asset) bool {
+	if left.Execer == "" || left.Symbol == "" || right.Execer == "" || right.Symbol == "" {
+		return false
+	}
+	if (left.Execer == "coins" && right.Execer == "coins") || (left.Symbol == right.Symbol) {
+		return false
+	}
+	return true
+}
+func (a *Action) LimitOrder(payload *et.LimitOrder) (*types.Receipt, error) {
+	leftAsset := payload.GetLeftAsset()
+	rightAsset := payload.GetRightAsset()
+	//TODO 参数要合法，必须有严格的校验，后面统一加入到checkTx里面
+	//coins执行器下面只有bty
+	if !CheckExchangeAsset(leftAsset, rightAsset) {
+		return nil, et.ErrAsset
+	}
+	if !types.CheckAmount(payload.GetAmount()) {
+		return nil, et.ErrAssetAmount
+	}
+	if CheckPrice(payload.GetPrice()) {
+		return nil, et.ErrAssetPrice
+	}
+	if !CheckOp(payload.GetOp()) {
+		return nil, et.ErrAssetOp
+	}
+	//TODO 这里symbol
+	cfg := a.api.GetConfig()
+	leftAssetDB, err := account.NewAccountDB(cfg, leftAsset.GetExecer(), leftAsset.GetSymbol(), a.statedb)
+	if err != nil {
+		return nil, err
+	}
+	rightAssetDB, err := account.NewAccountDB(cfg, rightAsset.GetExecer(), rightAsset.GetSymbol(), a.statedb)
+	if err != nil {
+		return nil, err
+	}
+	//先检查账户余额
+	if payload.GetOp() == et.OpBuy {
+		amount := int64(float32(payload.GetAmount()) * Truncate(payload.GetPrice()))
+		rightAccount := rightAssetDB.LoadExecAccount(a.fromaddr, a.execaddr)
+		if rightAccount.Balance < amount {
+			elog.Error("LimitOrder.BalanceCheck", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", amount, "err", et.ErrAssetBalance.Error())
+			return nil, et.ErrAssetBalance
+		}
+		return a.matchLimitOrder(payload, leftAssetDB, rightAssetDB)
+
+	}
+	if payload.GetOp() == et.OpSell {
+		amount := payload.GetAmount()
+		leftAccount := leftAssetDB.LoadExecAccount(a.fromaddr, a.execaddr)
+		if leftAccount.Balance < amount {
+			elog.Error("LimitOrder.BalanceCheck", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", amount, "err", et.ErrAssetBalance.Error())
+			return nil, et.ErrAssetBalance
+		}
+		return a.matchLimitOrder(payload, leftAssetDB, rightAssetDB)
+	}
+	return nil, fmt.Errorf("unknow op")
+}
+
+func (a *Action) RevokeOrder(payload *et.RevokeOrder) (*types.Receipt, error) {
+	var logs []*types.ReceiptLog
+	var kvs []*types.KeyValue
+	order, err := findOrderByOrderID(a.statedb, payload.GetOrderID())
+	if err != nil {
+		return nil, err
+	}
+	if order.Addr != a.fromaddr {
+		elog.Error("RevokeOrder.OrderCheck", "addr", a.fromaddr, "order.addr", order.Addr, "order.status", order.Status, "err", et.ErrAddr.Error())
+		return nil, et.ErrAddr
+	}
+	if order.Status == et.Completed || order.Status == et.Revoked {
+		elog.Error("RevokeOrder.OrderCheck", "addr", a.fromaddr, "order.addr", order.Addr, "order.status", order.Status, "err", et.ErrOrderSatus.Error())
+		return nil, et.ErrOrderSatus
+	}
+	leftAsset := order.GetLimitOrder().GetLeftAsset()
+	rightAsset := order.GetLimitOrder().GetRightAsset()
+	price := order.GetLimitOrder().GetPrice()
+	balance := order.GetBalance()
+
+	cfg := a.api.GetConfig()
+
+	if order.GetLimitOrder().GetOp() == et.OpBuy {
+		rightAssetDB, err := account.NewAccountDB(cfg, rightAsset.GetExecer(), rightAsset.GetSymbol(), a.statedb)
+		if err != nil {
+			return nil, err
+		}
+		amount := int64(float32(balance) * price)
+		rightAccount := rightAssetDB.LoadExecAccount(a.fromaddr, a.execaddr)
+		if rightAccount.Frozen < amount {
+			elog.Error("RevokeOrder.BalanceCheck", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", amount, "err", et.ErrAssetBalance.Error())
+			return nil, et.ErrAssetBalance
+		}
+		receipt, err := rightAssetDB.ExecActive(a.fromaddr, a.execaddr, amount)
+		if err != nil {
+			elog.Error("RevokeOrder.ExecActive", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", amount, "err", err.Error())
+			return nil, err
+		}
+		logs = append(logs, receipt.Logs...)
+		kvs = append(kvs, receipt.KV...)
+	}
+	if order.GetLimitOrder().GetOp() == et.OpSell {
+		leftAssetDB, err := account.NewAccountDB(cfg, leftAsset.GetExecer(), leftAsset.GetSymbol(), a.statedb)
+		if err != nil {
+			return nil, err
+		}
+		amount := balance
+		leftAccount := leftAssetDB.LoadExecAccount(a.fromaddr, a.execaddr)
+		if leftAccount.Frozen < amount {
+			elog.Error("RevokeOrder.BalanceCheck", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", amount, "err", et.ErrAssetBalance.Error())
+			return nil, et.ErrAssetBalance
+		}
+		receipt, err := leftAssetDB.ExecActive(a.fromaddr, a.execaddr, amount)
+		if err != nil {
+			elog.Error("RevokeOrder.ExecActive", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", amount, "err", err.Error())
+			return nil, err
+		}
+		logs = append(logs, receipt.Logs...)
+		kvs = append(kvs, receipt.KV...)
+	}
+
+	//更新order状态
+	order.Status = et.Revoked
+	order.UpdateTime = a.blocktime
+	kvs = append(kvs, a.GetKVSet(order)...)
+	re := &et.ReceiptExchange{
+		Order: order,
+		Index: a.GetIndex(),
+	}
+	receiptlog := &types.ReceiptLog{Ty: et.TyRevokeOrderLog, Log: types.Encode(re)}
+	logs = append(logs, receiptlog)
+	receipts := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
+	return receipts, nil
+
+}
+
+//撮合交易逻辑方法
+func (a *Action) matchLimitOrder(payload *et.LimitOrder, leftAccountDB, rightAccountDB *account.DB) (*types.Receipt, error) {
+	var logs []*types.ReceiptLog
+	var kvs []*types.KeyValue
+	var index int64
+
+	or := &et.Order{
+		OrderID:    common.ToHex(a.txhash),
+		Value:      &et.Order_LimitOrder{payload},
+		Ty:         et.TyLimitOrderAction,
+		Executed:   0,
+		Balance:    payload.GetAmount(),
+		Status:     et.Ordered,
+		Addr:       a.fromaddr,
+		UpdateTime: a.blocktime,
+		Index:      a.GetIndex(),
+	}
+	re := &et.ReceiptExchange{
+		Order: or,
+		Index: a.GetIndex(),
+	}
+
+	//按先进先出的原则进行撮合
+	//单笔交易最多撮合100笔历史订单,最大可撮合得深度，系统得自我防护
+	for i := 0; i < 20; i++ {
+		orderIDs, err := findOrderIDListByPrice(a.localDB, payload.GetLeftAsset(), payload.GetRightAsset(), payload.GetPrice(), a.OpSwap(payload.Op), et.ListASC, index)
+		if err == types.ErrNotFound {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		for _, orderID := range orderIDs {
+			matchorder, err := findOrderByOrderID(a.statedb, orderID.ID)
+			if err != nil {
+				elog.Warn("matchLimitOrder.findOrderByOrderID", "order", "err", err.Error())
+				continue
+			}
+			//同地址不能交易
+			if matchorder.Addr == a.fromaddr {
+				continue
+			}
+			//TODO 这里得逻辑是否需要调整?当匹配的单数过多，会导致receipt日志数量激增，理论上存在日志存储攻击，需要加下最大匹配深度，防止这种攻击发生
+			if matchorder.GetBalance() >= or.GetBalance() {
+				//转移冻结资产
+				receipt, err := leftAccountDB.ExecTransferFrozen(matchorder.Addr, a.fromaddr, a.execaddr, a.calcActualCost(matchorder.GetLimitOrder().Op, or.GetBalance(), payload.GetPrice()))
+				if err != nil {
+					elog.Error("matchLimitOrder.ExecTransferFrozen", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", a.calcActualCost(matchorder.GetLimitOrder().Op, or.GetBalance(), payload.GetPrice()), "err", err.Error())
+					return nil, err
+				}
+				logs = append(logs, receipt.Logs...)
+				kvs = append(kvs, receipt.KV...)
+				//将达成交易的相应资产结算
+				receipt, err = rightAccountDB.ExecTransfer(a.fromaddr, matchorder.Addr, a.execaddr, a.calcActualCost(payload.Op, or.GetBalance(), payload.GetPrice()))
+				if err != nil {
+					elog.Error("matchLimitOrder.ExecTransfer", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", a.calcActualCost(payload.Op, or.GetBalance(), payload.GetPrice()), "err", err.Error())
+					return nil, err
+				}
+				logs = append(logs, receipt.Logs...)
+				kvs = append(kvs, receipt.KV...)
+				// match receiptorder
+				matchorder.Balance = matchorder.GetBalance() - or.GetBalance()
+				matchorder.Executed = matchorder.Executed + or.GetBalance()
+				matchorder.Status = func(a, b int64) int32 {
+					if a > b {
+						return et.Ordered
+					} else {
+						return et.Completed
+					}
+				}(matchorder.GetBalance(), or.GetBalance())
+				a.updateStateDBCache(matchorder)
+				kvs = append(kvs, a.GetKVSet(matchorder)...)
+
+				or.Balance = 0
+				or.Executed = or.Executed + or.GetBalance()
+				or.Status = et.Completed
+				//update receipt order
+				re.Order = or
+				re.MatchOrders = append(re.MatchOrders, matchorder)
+
+				a.updateStateDBCache(or)
+				kvs = append(kvs, a.GetKVSet(or)...)
+				//statedb 更新
+				receiptlog := &types.ReceiptLog{Ty: et.TyLimitOrderLog, Log: types.Encode(re)}
+				logs = append(logs, receiptlog)
+				receipts := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
+				return receipts, nil
+			} else {
+				//转移冻结资产
+				receipt, err := leftAccountDB.ExecTransferFrozen(matchorder.Addr, a.fromaddr, a.execaddr, a.calcActualCost(matchorder.GetLimitOrder().Op, matchorder.GetBalance(), payload.GetPrice()))
+				if err != nil {
+					elog.Error("matchLimitOrder.ExecTransferFrozen", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", a.calcActualCost(matchorder.GetLimitOrder().Op, matchorder.GetBalance(), payload.GetPrice()), "err", err.Error())
+					return nil, err
+				}
+				logs = append(logs, receipt.Logs...)
+				kvs = append(kvs, receipt.KV...)
+				//将达成交易的相应资产结算
+				receipt, err = rightAccountDB.ExecTransfer(a.fromaddr, matchorder.Addr, a.execaddr, a.calcActualCost(payload.Op, matchorder.GetBalance(), payload.GetPrice()))
+				if err != nil {
+					elog.Error("matchLimitOrder.ExecTransfer", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", a.calcActualCost(payload.Op, matchorder.GetBalance(), payload.GetPrice()), "err", err.Error())
+					return nil, err
+				}
+				logs = append(logs, receipt.Logs...)
+				kvs = append(kvs, receipt.KV...)
+
+				// match receiptorder
+				matchorder.Balance = 0
+				matchorder.Executed = matchorder.Executed + matchorder.GetBalance()
+				matchorder.Status = et.Completed
+				a.updateStateDBCache(matchorder)
+				kvs = append(kvs, a.GetKVSet(matchorder)...)
+
+				or.Balance = or.Balance - matchorder.Balance
+				or.Executed = or.Executed + matchorder.Balance
+				or.Status = et.Ordered
+
+				re.Order = or
+				re.MatchOrders = append(re.MatchOrders, matchorder)
+
+				a.updateStateDBCache(or)
+
+			}
+		}
+		//查询数据不满足5条说明没有了,跳出循环
+		if len(orderIDs) < int(et.Count) {
+			break
+		}
+		index = orderIDs[len(orderIDs)-1].Index
+	}
+
+	//冻结剩余未成交的资金
+	if payload.Op == et.OpBuy {
+		receipt, err := rightAccountDB.ExecFrozen(a.fromaddr, a.execaddr, a.calcActualCost(et.OpBuy, or.Balance, payload.Price))
+		if err != nil {
+			elog.Error("LimitOrder.ExecFrozen", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", a.calcActualCost(et.OpBuy, or.Balance, payload.Price), "err", err.Error())
+			return nil, err
+		}
+		logs = append(logs, receipt.Logs...)
+		kvs = append(kvs, receipt.KV...)
+	}
+	if payload.Op == et.OpSell {
+		receipt, err := leftAccountDB.ExecFrozen(a.fromaddr, a.execaddr, a.calcActualCost(et.OpSell, or.Balance, payload.Price))
+		if err != nil {
+			elog.Error("LimitOrder.ExecFrozen", "addr", a.fromaddr, "execaddr", a.execaddr, "amount", a.calcActualCost(et.OpSell, or.Balance, payload.Price), "err", err.Error())
+			return nil, err
+		}
+		logs = append(logs, receipt.Logs...)
+		kvs = append(kvs, receipt.KV...)
+	}
+	//更新order状态
+	kvs = append(kvs, a.GetKVSet(or)...)
+	receiptlog := &types.ReceiptLog{Ty: et.TyLimitOrderLog, Log: types.Encode(re)}
+	logs = append(logs, receiptlog)
+	receipts := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
+	return receipts, nil
+}
+func findOrderByOrderID(statedb dbm.KV, orderID string) (*et.Order, error) {
+	data, err := statedb.Get(calcOrderKey(orderID))
+	if err != nil {
+		elog.Error("findOrderByOrderID.Get", "orderID", orderID, "err", err.Error())
+		return nil, err
+	}
+	var order et.Order
+	err = types.Decode(data, &order)
+	if err != nil {
+		elog.Error("findOrderByOrderID.Decode", "orderID", orderID, "err", err.Error())
+		return nil, err
+	}
+	return &order, nil
+}
+
+func findOrderIDListByPrice(localdb dbm.Lister, left, right *et.Asset, price float32, op, direction int32, index int64) ([]*et.OrderID, error) {
+	prefix := calcMarketDepthOrderPrefix(left, right, op, price)
+	key := calcMarketDepthOrderKey(left, right, op, price, index)
+	var values [][]byte
+	var err error
+	if index == 0 { //第一次查询
+		values, err = localdb.List(prefix, nil, et.Count, direction)
+	} else {
+		values, err = localdb.List(prefix, key, et.Count, direction)
+	}
+	if err != nil {
+		return nil, err
+	}
+	var list []*et.OrderID
+	for _, value := range values {
+		var orderID et.OrderID
+		err := types.Decode(value, &orderID)
+		if err != nil {
+			elog.Warn("findOrderIDListByPrice.Decode", "orderID", "err", err.Error())
+			continue
+		}
+		list = append(list, &orderID)
+	}
+	return list, nil
+}
+
+//localdb查询
+func findObject(localdb dbm.KVDB, key []byte, msg proto.Message) error {
+	value, err := localdb.Get(key)
+	if err != nil {
+		elog.Warn("findObject.Decode", "key", string(key), "err", err.Error())
+		return err
+	}
+	return types.Decode(value, msg)
+}
+
+//买单深度是按价格倒序，由高到低
+func Direction(op int32) int32 {
+	if op == et.OpBuy {
+		return et.ListDESC
+	}
+	return et.ListASC
+}
+
+//这里price当作索引来用，首次查询不需要填值
+func QueryMarketDepth(localdb dbm.Lister, left, right *et.Asset, op int32, price float32, count int32) (types.Message, error) {
+	prefix := calcMarketDepthPrefix(left, right, op)
+	key := calcMarketDepthKey(left, right, op, price)
+	var values [][]byte
+	var err error
+	if price == 0 { //第一次查询，方向卖单由低到高，买单由高到低
+		values, err = localdb.List(prefix, nil, count, Direction(op))
+	} else {
+		values, err = localdb.List(prefix, key, count, Direction(op))
+	}
+	if err != nil {
+		return nil, err
+	}
+	var list et.MarketDepthList
+	for _, value := range values {
+		var marketDept et.MarketDepth
+		err := types.Decode(value, &marketDept)
+		if err != nil {
+			elog.Warn("QueryMarketDepth.Decode", "marketDept", "err", err.Error())
+			continue
+		}
+		list.List = append(list.List, &marketDept)
+	}
+	return &list, nil
+}
+
+//QueryCompletedOrderList
+func QueryCompletedOrderList(localdb dbm.Lister, statedb dbm.KV, left, right *et.Asset, index int64, count, direction int32) (types.Message, error) {
+	prefix := calcCompletedOrderPrefix(left, right)
+	key := calcCompletedOrderKey(left, right, index)
+	var values [][]byte
+	var err error
+	if index == 0 { //第一次查询,默认展示最新得成交记录
+		values, err = localdb.List(prefix, nil, count, direction)
+	} else {
+		values, err = localdb.List(prefix, key, count, direction)
+	}
+	if err != nil {
+		return nil, err
+	}
+	var list []*et.OrderID
+	for _, value := range values {
+		var orderID et.OrderID
+		err := types.Decode(value, &orderID)
+		if err != nil {
+			elog.Warn("QueryCompletedOrderList.Decode", "marketDept", "err", err.Error())
+			continue
+		}
+		list = append(list, &orderID)
+	}
+	var orderList et.OrderList
+	for _, orderID := range list {
+		order, err := findOrderByOrderID(statedb, orderID.ID)
+		if err != nil {
+			continue
+		}
+		//替换索引index
+		order.Index = orderID.Index
+		orderList.List = append(orderList.List, order)
+	}
+
+	return &orderList, nil
+}
+
+//QueryOrderList,默认展示最新的
+func QueryOrderList(localdb dbm.Lister, statedb dbm.KV, addr string, status, count, direction int32, index int64) (types.Message, error) {
+	prefix := calcUserOrderIDPrefix(status, addr)
+	key := calcUserOrderIDKey(status, addr, index)
+	var values [][]byte
+	var err error
+	if index == 0 { //第一次查询,默认展示最新得成交记录
+		values, err = localdb.List(prefix, nil, count, direction)
+	} else {
+		values, err = localdb.List(prefix, key, count, direction)
+	}
+	if err != nil {
+		return nil, err
+	}
+	var list []*et.OrderID
+	for _, value := range values {
+		var orderID et.OrderID
+		err := types.Decode(value, &orderID)
+		if err != nil {
+			elog.Warn("QueryOrderList.Decode", "marketDept", "err", err.Error())
+			continue
+		}
+		list = append(list, &orderID)
+	}
+	var orderList et.OrderList
+	for _, orderID := range list {
+		order, err := findOrderByOrderID(statedb, orderID.ID)
+		if err != nil {
+			continue
+		}
+		//替换索引index
+		order.Index = orderID.Index
+		orderList.List = append(orderList.List, order)
+	}
+	return &orderList, nil
+}
+
+//截取小数点后7位
+func Truncate(price float32) float32 {
+	return float32(math.Trunc(float64(1e8)*float64(price)) / float64(1e8))
+}

plugin/dapp/exchange/executor/exec.go

+package executor
+
+import (
+	"github.com/33cn/chain33/types"
+	exchangetypes "github.com/33cn/plugin/plugin/dapp/exchange/types"
+)
+
+/*
+ * 实现交易的链上执行接口
+ * 关键数据上链（statedb）并生成交易回执（log）
+ */
+
+func (e *exchange) Exec_LimitOrder(payload *exchangetypes.LimitOrder, tx *types.Transaction, index int) (*types.Receipt, error) {
+	var receipt *types.Receipt
+	//implement code
+	return receipt, nil
+}
+
+func (e *exchange) Exec_MarketOrder(payload *exchangetypes.MarketOrder, tx *types.Transaction, index int) (*types.Receipt, error) {
+	var receipt *types.Receipt
+	//implement code
+	return receipt, nil
+}
+
+func (e *exchange) Exec_RevokeOrder(payload *exchangetypes.RevokeOrder, tx *types.Transaction, index int) (*types.Receipt, error) {
+	var receipt *types.Receipt
+	//implement code
+	return receipt, nil
+}

plugin/dapp/exchange/executor/exec_del_local.go

+package executor
+
+import (
+	"github.com/33cn/chain33/types"
+)
+
+/*
+ * 实现区块回退时本地执行的数据清除
+ */
+
+// ExecDelLocal 回退自动删除，重写基类
+func (e *exchange) ExecDelLocal(tx *types.Transaction, receipt *types.ReceiptData, index int) (*types.LocalDBSet, error) {
+	kvs, err := e.DelRollbackKV(tx, tx.Execer)
+	if err != nil {
+		return nil, err
+	}
+	dbSet := &types.LocalDBSet{}
+	dbSet.KV = append(dbSet.KV, kvs...)
+	return dbSet, nil
+}

plugin/dapp/exchange/executor/exec_local.go

+package executor
+
+import (
+	"github.com/33cn/chain33/types"
+	exchangetypes "github.com/33cn/plugin/plugin/dapp/exchange/types"
+)
+
+/*
+ * 实现交易相关数据本地执行，数据不上链
+ * 非关键数据，本地存储(localDB), 用于辅助查询，效率高
+ */
+
+func (e *exchange) ExecLocal_LimitOrder(payload *exchangetypes.LimitOrder, tx *types.Transaction, receiptData *types.ReceiptData, index int) (*types.LocalDBSet, error) {
+	dbSet := &types.LocalDBSet{}
+	if receiptData.Ty == types.ExecOk {
+		for _, log := range receiptData.Logs {
+			switch log.Ty {
+			case exchangetypes.TyLimitOrderLog:
+				receipt := &exchangetypes.ReceiptExchange{}
+				if err := types.Decode(log.Log, receipt); err != nil {
+					return nil, err
+				}
+				kv := e.updateIndex(receipt)
+				dbSet.KV = append(dbSet.KV, kv...)
+			}
+		}
+	}
+	return e.addAutoRollBack(tx, dbSet.KV), nil
+}
+
+func (e *exchange) ExecLocal_MarketOrder(payload *exchangetypes.MarketOrder, tx *types.Transaction, receiptData *types.ReceiptData, index int) (*types.LocalDBSet, error) {
+	dbSet := &types.LocalDBSet{}
+	//implement code
+	return e.addAutoRollBack(tx, dbSet.KV), nil
+}
+
+func (e *exchange) ExecLocal_RevokeOrder(payload *exchangetypes.RevokeOrder, tx *types.Transaction, receiptData *types.ReceiptData, index int) (*types.LocalDBSet, error) {
+	dbSet := &types.LocalDBSet{}
+	//implement code
+	return e.addAutoRollBack(tx, dbSet.KV), nil
+}
+
+//设置自动回滚
+func (e *exchange) addAutoRollBack(tx *types.Transaction, kv []*types.KeyValue) *types.LocalDBSet {
+
+	dbSet := &types.LocalDBSet{}
+	dbSet.KV = e.AddRollbackKV(tx, tx.Execer, kv)
+	return dbSet
+}
+
+func (e *exchange) updateIndex(receipt *exchangetypes.ReceiptExchange) (kvs []*types.KeyValue) {
+	switch receipt.Order.Status {
+	case exchangetypes.Ordered:
+		left := receipt.GetOrder().GetLimitOrder().GetLeftAsset()
+		right := receipt.GetOrder().GetLimitOrder().GetRightAsset()
+		op := receipt.GetOrder().GetLimitOrder().GetOp()
+		price := receipt.GetOrder().GetLimitOrder().GetPrice()
+		oderID := receipt.GetOrder().OrderID
+		index := receipt.GetIndex()
+		addr := receipt.GetOrder().Addr
+		var markDepth exchangetypes.MarketDepth
+		err := findObject(e.GetLocalDB(), calcMarketDepthKey(left, right, op, price), &markDepth)
+		if err == types.ErrNotFound {
+			markDepth.Price = price
+			markDepth.LeftAsset = left
+			markDepth.RightAsset = right
+			markDepth.Op = op
+			markDepth.Amount = receipt.Order.Balance
+		}
+		markDepth.Amount = markDepth.Amount + receipt.Order.Balance
+		//marketDepth
+		kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthKey(left, right, op, price), Value: types.Encode(&markDepth)})
+		//orderID
+		kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthOrderKey(left, right, op, price, receipt.Index), Value: types.Encode(&exchangetypes.OrderID{ID: oderID, Index: index})})
+		//addr orderID
+		kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Ordered, addr, index), Value: types.Encode(&exchangetypes.OrderID{ID: oderID, Index: index})})
+
+		if len(receipt.MatchOrders) > 0 {
+			//撮合交易更新
+			var balance int64
+			for _, matchOrder := range receipt.MatchOrders {
+				if matchOrder.Status == exchangetypes.Completed {
+					// 删除原有状态orderID
+					kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthOrderKey(left, right, matchOrder.GetLimitOrder().Op, price, matchOrder.Index), Value: nil})
+					//删除原有状态orderID
+					kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Ordered, matchOrder.Addr, matchOrder.Index), Value: nil})
+					//更新状态为已完成,索引index,改为当前的index
+					kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Completed, matchOrder.Addr, index), Value: types.Encode(&exchangetypes.OrderID{ID: matchOrder.OrderID, Index: index})})
+					//calcCompletedOrderKey
+					kvs = append(kvs, &types.KeyValue{Key: calcCompletedOrderKey(left, right, index), Value: types.Encode(&exchangetypes.OrderID{ID: matchOrder.OrderID, Index: index})})
+				}
+				if matchOrder.Status == exchangetypes.Ordered {
+					//只需统一更改市场深度状态，其他不需要处理
+					balance = balance + matchOrder.Balance
+				}
+			}
+			//更改市场深度
+			var matchDepth exchangetypes.MarketDepth
+			err = findObject(e.GetLocalDB(), calcMarketDepthKey(left, right, OpSwap(op), price), &matchDepth)
+			if err == types.ErrNotFound {
+				matchDepth.Price = price
+				matchDepth.LeftAsset = left
+				matchDepth.RightAsset = right
+				matchDepth.Op = OpSwap(op)
+				matchDepth.Amount = balance
+			}
+			matchDepth.Amount = matchDepth.Amount - receipt.Order.Executed
+			//marketDepth
+			kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthKey(left, right, OpSwap(op), price), Value: types.Encode(&matchDepth)})
+		}
+		return
+	case exchangetypes.Completed:
+		left := receipt.GetOrder().GetLimitOrder().GetLeftAsset()
+		right := receipt.GetOrder().GetLimitOrder().GetRightAsset()
+		op := receipt.GetOrder().GetLimitOrder().GetOp()
+		price := receipt.GetOrder().GetLimitOrder().GetPrice()
+		oderID := receipt.GetOrder().OrderID
+		index := receipt.GetIndex()
+		addr := receipt.GetOrder().Addr
+
+		//user orderID
+		kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Completed, addr, index), Value: types.Encode(&exchangetypes.OrderID{ID: oderID, Index: index})})
+
+		if len(receipt.MatchOrders) > 0 {
+			//撮合交易更新
+			var balance int64
+			for _, matchOrder := range receipt.MatchOrders {
+				if matchOrder.Status == exchangetypes.Completed {
+					// 删除原有状态orderID
+					kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthOrderKey(left, right, matchOrder.GetLimitOrder().Op, price, matchOrder.Index), Value: nil})
+					//删除原有状态orderID
+					kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Ordered, matchOrder.Addr, matchOrder.Index), Value: nil})
+					//更新状态为已完成,更新索引
+					kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Completed, matchOrder.Addr, index), Value: types.Encode(&exchangetypes.OrderID{ID: matchOrder.OrderID, Index: index})})
+					//calcCompletedOrderKey
+					kvs = append(kvs, &types.KeyValue{Key: calcCompletedOrderKey(left, right, index), Value: types.Encode(&exchangetypes.OrderID{ID: matchOrder.OrderID, Index: index})})
+
+				}
+				if matchOrder.Status == exchangetypes.Ordered {
+					//只需统一更改市场深度状态，其他不需要处理
+					balance = balance + matchOrder.Balance
+				}
+			}
+			//更改match市场深度
+			var matchDepth exchangetypes.MarketDepth
+			err := findObject(e.GetLocalDB(), calcMarketDepthKey(left, right, OpSwap(op), price), &matchDepth)
+			if err == types.ErrNotFound {
+				matchDepth.Price = price
+				matchDepth.LeftAsset = left
+				matchDepth.RightAsset = right
+				matchDepth.Op = OpSwap(op)
+				matchDepth.Amount = balance
+			}
+			matchDepth.Amount = matchDepth.Amount - receipt.Order.Executed
+			//marketDepth
+			kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthKey(left, right, OpSwap(op), price), Value: types.Encode(&matchDepth)})
+		}
+		return
+	case exchangetypes.Revoked:
+		//只有状态时ordered状态的订单才能被撤回
+		left := receipt.GetOrder().GetLimitOrder().GetLeftAsset()
+		right := receipt.GetOrder().GetLimitOrder().GetRightAsset()
+		op := receipt.GetOrder().GetLimitOrder().GetOp()
+		price := receipt.GetOrder().GetLimitOrder().GetPrice()
+		oderID := receipt.GetOrder().OrderID
+		index := receipt.GetIndex()
+		addr := receipt.GetOrder().Addr
+		var marketDepth exchangetypes.MarketDepth
+		err := findObject(e.GetLocalDB(), calcMarketDepthKey(left, right, op, price), &marketDepth)
+		if err == nil {
+			//marketDepth
+			marketDepth.Amount = marketDepth.Amount - receipt.GetOrder().Balance
+			kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthKey(left, right, op, price), Value: types.Encode(&marketDepth)})
+		}
+		// 删除原有状态orderID
+		kvs = append(kvs, &types.KeyValue{Key: calcMarketDepthOrderKey(left, right, op, price, receipt.GetOrder().Index), Value: nil})
+		//删除原有状态orderID
+		kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Ordered, addr, receipt.GetOrder().Index), Value: nil})
+		//添加撤销的订单
+		kvs = append(kvs, &types.KeyValue{Key: calcUserOrderIDKey(exchangetypes.Revoked, addr, index), Value: types.Encode(&exchangetypes.OrderID{ID: oderID, Index: index})})
+	}
+	return
+}
+func OpSwap(op int32) int32 {
+	if op == exchangetypes.OpBuy {
+		return exchangetypes.OpSell
+	} else {
+		return exchangetypes.OpBuy
+	}
+}

plugin/dapp/exchange/executor/kv.go

+package executor
+
+import (
+	"fmt"
+
+	"github.com/33cn/plugin/plugin/dapp/exchange/types"
+)
+
+/*
+ * 用户合约存取kv数据时，key值前缀需要满足一定规范
+ * 即key = keyPrefix + userKey
+ * 需要字段前缀查询时，使用’-‘作为分割符号
+ */
+
+var (
+	//KeyPrefixStateDB state db key必须前缀
+	KeyPrefixStateDB = "mavl-exchange-"
+	//KeyPrefixLocalDB local db的key必须前缀
+	KeyPrefixLocalDB = "LODB-exchange-"
+)
+
+//状态数据库中存储具体挂单信息
+func calcOrderKey(orderID string) []byte {
+	key := fmt.Sprintf("%s"+"orderID:%s", KeyPrefixStateDB, orderID)
+	return []byte(key)
+}
+func calcMarketDepthPrefix(left, right *types.Asset, op int32) []byte {
+	key := fmt.Sprintf("%s"+"depth-%s-%s-%d:", KeyPrefixLocalDB, left.GetSymbol(), right.GetSymbol(), op)
+	return []byte(key)
+}
+
+//市场深度
+func calcMarketDepthKey(left, right *types.Asset, op int32, price float32) []byte {
+	// 设置精度为1e8
+	key := fmt.Sprintf("%s"+"depth-%s-%s-%d:%016d", KeyPrefixLocalDB, left.GetSymbol(), right.GetSymbol(), op, int64(Truncate(price)*float32(1e8)))
+	return []byte(key)
+}
+
+func calcMarketDepthOrderPrefix(left, right *types.Asset, op int32, price float32) []byte {
+	// 设置精度为1e8
+	key := fmt.Sprintf("%s"+"order-%s-%s-%d:%016d", KeyPrefixLocalDB, left.GetSymbol(), right.GetSymbol(), op, int64(Truncate(price)*float32(1e8)))
+	return []byte(key)
+}
+
+// localdb中存储市场挂单ID
+func calcMarketDepthOrderKey(left, right *types.Asset, op int32, price float32, index int64) []byte {
+	// 设置精度为1e8
+	key := fmt.Sprintf("%s"+"order-%s-%s-%d:%016d:%018d", KeyPrefixLocalDB, left.GetSymbol(), right.GetSymbol(), op, int64(Truncate(price)*float32(1e8)), index)
+	return []byte(key)
+}
+
+//最新已经成交的订单，这里状态固定都是完成状态,这个主要给外部使用，可以查询最新得成交信息
+func calcCompletedOrderKey(left, right *types.Asset, index int64) []byte {
+	// 设置精度为1e8
+	key := fmt.Sprintf("%s"+"completed-%s-%s-%d:%018d", KeyPrefixLocalDB, left.GetSymbol(), right.GetSymbol(), types.Completed, index)
+	return []byte(key)
+}
+func calcCompletedOrderPrefix(left, right *types.Asset) []byte {
+	// 设置精度为1e8
+	key := fmt.Sprintf("%s"+"completed-%s-%s-%d:", KeyPrefixLocalDB, left.GetSymbol(), right.GetSymbol(), types.Completed)
+	return []byte(key)
+}
+
+//根据地址和订单状态，去查询订单列表,包含所有交易对
+func calcUserOrderIDPrefix(status int32, addr string) []byte {
+	key := fmt.Sprintf("%s"+"addr:%s:%d:", KeyPrefixLocalDB, addr, status)
+	return []byte(key)
+}
+func calcUserOrderIDKey(status int32, addr string, index int64) []byte {
+	key := fmt.Sprintf("%s"+"addr:%s:%d:%018d", KeyPrefixLocalDB, addr, status, index)
+	return []byte(key)
+}

plugin/dapp/exchange/executor/query.go

+package executor
+
+import (
+	"github.com/33cn/chain33/types"
+	et "github.com/33cn/plugin/plugin/dapp/exchange/types"
+)
+
+//查询市场深度
+func (s *exchange) Query_QueryMarketDepth(in *et.QueryMarketDepth) (types.Message, error) {
+	if !CheckCount(in.Count) {
+		return nil, et.ErrCount
+	}
+	if in.Count == 0 {
+		in.Count = 10
+	}
+	if !CheckExchangeAsset(in.LeftAsset, in.RightAsset) {
+		return nil, et.ErrAsset
+	}
+	if !CheckPrice(in.Price) {
+		return nil, et.ErrAssetPrice
+	}
+
+	if !CheckOp(in.Op) {
+		return nil, et.ErrAssetOp
+	}
+	return QueryMarketDepth(s.GetLocalDB(), in.LeftAsset, in.RightAsset, in.Op, in.Price, in.Count)
+}
+
+//查询已经完成得订单
+func (s *exchange) Query_QueryCompletedOrderList(in *et.QueryCompletedOrderList) (types.Message, error) {
+	if !CheckExchangeAsset(in.LeftAsset, in.RightAsset) {
+		return nil, et.ErrAsset
+	}
+	if in.Count > 20 {
+		return nil, et.ErrCount
+	}
+
+	if !CheckDirection(in.Direction) {
+		return nil, et.ErrDirection
+	}
+	return QueryCompletedOrderList(s.GetLocalDB(), s.GetStateDB(), in.LeftAsset, in.RightAsset, in.Index, in.Count, in.Direction)
+}
+
+//根据orderID查询订单信息
+func (s *exchange) Query_QueryOrder(in *et.QueryOrder) (types.Message, error) {
+	if in.OrderID == "" {
+		return nil, et.ErrOrderID
+	}
+	return findOrderByOrderID(s.GetStateDB(), in.OrderID)
+}
+
+//根据订单状态，查询订单信息（这里面包含所有交易对）
+func (s *exchange) Query_QueryOrderList(in *et.QueryOrderList) (types.Message, error) {
+	if !CheckStatus(in.Status) {
+		return nil, et.ErrStatus
+	}
+	if !CheckCount(in.Count) {
+		return nil, et.ErrCount
+	}
+
+	if !CheckDirection(in.Direction) {
+		return nil, et.ErrDirection
+	}
+
+	if in.Address == "" {
+		return nil, et.ErrAddr
+	}
+	return QueryOrderList(s.GetLocalDB(), s.GetStateDB(), in.Address, in.Status, in.Count, in.Direction, in.Index)
+}

plugin/dapp/exchange/plugin.go

+package types
+
+import (
+	"github.com/33cn/chain33/pluginmgr"
+	"github.com/33cn/plugin/plugin/dapp/exchange/commands"
+	"github.com/33cn/plugin/plugin/dapp/exchange/executor"
+	"github.com/33cn/plugin/plugin/dapp/exchange/rpc"
+	exchangetypes "github.com/33cn/plugin/plugin/dapp/exchange/types"
+)
+
+/*
+ * 初始化dapp相关的组件
+ */
+
+func init() {
+	pluginmgr.Register(&pluginmgr.PluginBase{
+		Name:     exchangetypes.ExchangeX,
+		ExecName: executor.GetName(),
+		Exec:     executor.Init,
+		Cmd:      commands.Cmd,
+		RPC:      rpc.Init,
+	})
+}

plugin/dapp/exchange/proto/Makefile

+all:
+	./create_protobuf.sh

plugin/dapp/exchange/proto/create_protobuf.sh

+#!/bin/sh
+# proto生成命令，将pb.go文件生成到types/目录下, chain33_path支持引用chain33框架的proto文件
+chain33_path=$(go list -f '{{.Dir}}' "github.com/33cn/chain33")
+protoc --go_out=plugins=grpc:../types ./*.proto --proto_path=. --proto_path="${chain33_path}/types/proto/"

plugin/dapp/exchange/proto/exchange.proto

+syntax = "proto3";
+package types;
+
+message Exchange {
+}
+
+message ExchangeAction {
+    oneof value {
+        LimitOrder limitOrder = 1;
+//        MarketOrder marketOrder = 2;
+        RevokeOrder revokeOrder = 3;
+    }
+    int32 ty = 6;
+}
+//限价订单
+message LimitOrder {
+    //交易对
+    Asset leftAsset  = 1;
+    //交易对
+    Asset rightAsset  = 2;
+    //价格
+    float price  = 3;
+    //总量
+    int64 amount = 4;
+    //操作， 1为买，2为卖
+    int32 op = 5;
+}
+
+//市价委托
+message MarketOrder {
+    //资产1
+    Asset leftAsset  = 1;
+    //资产2
+    Asset rightAsset = 2;
+    //总量
+    int64 amount = 3;
+    //操作， 1为买，2为卖
+    int32 op = 4;
+}
+
+//撤回订单
+message RevokeOrder {
+    //订单号
+    string orderID   = 1;
+}
+//资产类型
+message Asset {
+    string execer = 1;
+    string symbol = 2;
+}
+
+//订单信息
+message Order {
+    string orderID   = 1;
+    oneof value {
+        LimitOrder limitOrder = 2;
+        MarketOrder marketOrder = 3;
+    }
+    //挂单类型
+    int32 ty = 4;
+    //已经成交的数量
+    int64 executed = 5;
+    //余额
+    int64  balance = 6;
+    //状态,0 挂单中ordered， 1 完成completed， 2撤回 revoked
+    int32 status = 7;
+    //用户地址
+    string addr = 8;
+    //更新时间
+    int64 updateTime = 9;
+    //索引
+    int64 index = 10;
+}
+
+//挂单价
+message OrderPrice {
+    float price  = 1;
+    int64  index = 2;
+}
+//单号
+message OrderID {
+    string ID   = 1;
+    int64  index = 2;
+}
+//查询接口
+message QueryMarketDepth {
+    //资产1
+    Asset leftAsset  = 1;
+    //资产2
+    Asset rightAsset = 2;
+    //操作， 1为买，2为卖
+    int32 op = 3;
+    // 这里用价格作为索引值
+    float price  = 4;
+    //单页返回多少条记录，默认返回10条,为了系统安全最多单次只能返回20条
+    int32 count = 5;
+}
+//市场深度
+message MarketDepth {
+    //资产1
+    Asset leftAsset  = 1;
+    //资产2
+    Asset rightAsset = 2;
+    //价格
+    float price  = 3;
+    //总量
+    int64 amount = 4;
+    //操作， 1为买，2为卖
+    int32 op = 5;
+}
+//查询接口返回的市场深度列表
+message MarketDepthList {
+    repeated MarketDepth list = 1;
+}
+
+//查询最新得成交信息,外部接口
+message QueryCompletedOrderList {
+    //资产1
+    Asset leftAsset  = 1;
+    //资产2
+    Asset rightAsset = 2;
+    // 索引值
+    int64 index = 3;
+    //单页返回多少条记录，默认返回10条,为了系统安全最多单次只能返回20条
+    int32 count = 4;
+    // 0降序，1升序，默认降序
+    int32 direction = 5;
+}
+
+//根据orderID去查询订单信息
+message QueryOrder {
+    string orderID   = 1;
+}
+//根据地址，状态查询用户自己的挂单信息
+message QueryOrderList {
+    //挂单状态必填(默认是0,只查询ordered挂单中的)
+    int32 status = 1;
+    //用户地址信息，必填
+    string address = 2;
+    // 索引值
+    int64 index = 3;
+    //单页返回多少条记录，默认返回10条,为了系统安全最多单次只能返回20条
+    int32 count = 4;
+    // 0降序，1升序，默认降序
+    int32 direction = 5;
+}
+//订单列表
+message OrderList {
+    repeated Order list = 1;
+}
+
+
+//exchange执行票据日志
+message ReceiptExchange {
+    Order order = 1;
+    repeated Order matchOrders = 2;
+    int64  index      = 3;
+}
+service exchange {
+
+}

plugin/dapp/exchange/rpc/rpc.go

+package rpc
+
+/*
+ * 实现json rpc和grpc service接口
+ * json rpc用Jrpc结构作为接收实例
+ * grpc使用channelClient结构作为接收实例
+ */

plugin/dapp/exchange/rpc/types.go

+package rpc
+
+import (
+	rpctypes "github.com/33cn/chain33/rpc/types"
+	exchangetypes "github.com/33cn/plugin/plugin/dapp/exchange/types"
+)
+
+/*
+ * rpc相关结构定义和初始化
+ */
+
+// 实现grpc的service接口
+type channelClient struct {
+	rpctypes.ChannelClient
+}
+
+// Jrpc 实现json rpc调用实例
+type Jrpc struct {
+	cli *channelClient
+}
+
+// Grpc grpc
+type Grpc struct {
+	*channelClient
+}
+
+// Init init rpc
+func Init(name string, s rpctypes.RPCServer) {
+	cli := &channelClient{}
+	grpc := &Grpc{channelClient: cli}
+	cli.Init(name, s, &Jrpc{cli: cli}, grpc)
+	//存在grpc service时注册grpc server，需要生成对应的pb.go文件
+	exchangetypes.RegisterExchangeServer(s.GRPC(), grpc)
+}

plugin/dapp/exchange/types/errors.go

+package types
+
+import "fmt"
+
+// some errors definition
+var (
+	ErrAssetAmount  = fmt.Errorf("%s", "The asset amount is not valid!")
+	ErrAssetPrice   = fmt.Errorf("%s", "The asset price is not valid!")
+	ErrAssetOp      = fmt.Errorf("%s", "The asset op is not define!")
+	ErrAssetBalance = fmt.Errorf("%s", "Insufficient balance!")
+	ErrOrderSatus   = fmt.Errorf("%s", "The order status is reovked or completed!")
+	ErrAddr         = fmt.Errorf("%s", "Wrong Addr!")
+	ErrAsset        = fmt.Errorf("%s", "The asset's execer or symbol can't be nil,The same assets cannot be exchanged!")
+	ErrCount        = fmt.Errorf("%s", "The param count can't large  20")
+	ErrDirection    = fmt.Errorf("%s", "The direction only 0 or 1!")
+	ErrStatus       = fmt.Errorf("%s", "The status only in  0 , 1, 2!")
+	ErrOrderID      = fmt.Errorf("%s", "Wrong OrderID!")
+)

plugin/dapp/exchange/types/exchange.go

+package types
+
+import (
+	log "github.com/33cn/chain33/common/log/log15"
+	"github.com/33cn/chain33/types"
+)
+
+/*
+ * 交易相关类型定义
+ * 交易action通常有对应的log结构，用于交易回执日志记录
+ * 每一种action和log需要用id数值和name名称加以区分
+ */
+
+// action类型id和name，这些常量可以自定义修改
+const (
+	TyUnknowAction = iota + 200
+	TyLimitOrderAction
+	TyMarketOrderAction
+	TyRevokeOrderAction
+
+	NameLimitOrderAction  = "LimitOrder"
+	NameMarketOrderAction = "MarketOrder"
+	NameRevokeOrderAction = "RevokeOrder"
+
+	FuncNameQueryMarketDepth        = "QueryMarketDepth"
+	FuncNameQueryCompletedOrderList = "QueryCompletedOrderList"
+	FuncNameQueryOrder              = "QueryOrder"
+	FuncNameQueryOrderList          = "QueryOrderList"
+)
+
+// log类型id值
+const (
+	TyUnknownLog = iota + 200
+	TyLimitOrderLog
+	TyMarketOrderLog
+	TyRevokeOrderLog
+)
+
+// OP
+const (
+	OpBuy = iota + 1
+	OpSell
+)
+
+//order status
+const (
+	Ordered = iota
+	Completed
+	Revoked
+)
+
+//const
+const (
+	ListDESC = int32(0)
+	ListASC  = int32(1)
+	ListSeek = int32(2)
+)
+
+//单次list还回条数
+const (
+	Count    = int32(5)
+	MaxCount = int32(20)
+)
+
+var (
+	//ExchangeX 执行器名称定义
+	ExchangeX = "exchange"
+	//定义actionMap
+	actionMap = map[string]int32{
+		NameLimitOrderAction:  TyLimitOrderAction,
+		NameMarketOrderAction: TyMarketOrderAction,
+		NameRevokeOrderAction: TyRevokeOrderAction,
+	}
+	//定义log的id和具体log类型及名称，填入具体自定义log类型
+	logMap = map[int64]*types.LogInfo{
+		//LogID:	{Ty: reflect.TypeOf(LogStruct), Name: LogName},
+	}
+	tlog = log.New("module", "exchange.types")
+)
+
+// init defines a register function
+func init() {
+	types.AllowUserExec = append(types.AllowUserExec, []byte(ExchangeX))
+	//注册合约启用高度
+	types.RegFork(ExchangeX, InitFork)
+	types.RegExec(ExchangeX, InitExecutor)
+}
+
+// InitFork defines register fork
+func InitFork(cfg *types.Chain33Config) {
+	cfg.RegisterDappFork(ExchangeX, "Enable", 0)
+}
+
+// InitExecutor defines register executor
+func InitExecutor(cfg *types.Chain33Config) {
+	types.RegistorExecutor(ExchangeX, NewType(cfg))
+}
+
+type exchangeType struct {
+	types.ExecTypeBase
+}
+
+func NewType(cfg *types.Chain33Config) *exchangeType {
+	c := &exchangeType{}
+	c.SetChild(c)
+	c.SetConfig(cfg)
+	return c
+}
+
+// GetPayload 获取合约action结构
+func (e *exchangeType) GetPayload() types.Message {
+	return &ExchangeAction{}
+}
+
+// GeTypeMap 获取合约action的id和name信息
+func (e *exchangeType) GetTypeMap() map[string]int32 {
+	return actionMap
+}
+
+// GetLogMap 获取合约log相关信息
+func (e *exchangeType) GetLogMap() map[int64]*types.LogInfo {
+	return logMap
+}

plugin/dapp/exchange/types/exchange.pb.go

+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: exchange.proto
+
+/*
+Package types is a generated protocol buffer package.
+
+It is generated from these files:
+	exchange.proto
+
+It has these top-level messages:
+	Exchange
+	ExchangeAction
+	LimitOrder
+	MarketOrder
+	RevokeOrder
+	Asset
+	Order
+	OrderPrice
+	OrderID
+	QueryMarketDepth
+	MarketDepth
+	MarketDepthList
+	QueryCompletedOrderList
+	QueryOrder
+	QueryOrderList
+	OrderList
+	ReceiptExchange
+*/
+package types
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+import (
+	context "golang.org/x/net/context"
+	grpc "google.golang.org/grpc"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type Exchange struct {
+}
+
+func (m *Exchange) Reset()                    { *m = Exchange{} }
+func (m *Exchange) String() string            { return proto.CompactTextString(m) }
+func (*Exchange) ProtoMessage()               {}
+func (*Exchange) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+type ExchangeAction struct {
+	// Types that are valid to be assigned to Value:
+	//	*ExchangeAction_LimitOrder
+	//	*ExchangeAction_RevokeOrder
+	Value isExchangeAction_Value `protobuf_oneof:"value"`
+	Ty    int32                  `protobuf:"varint,6,opt,name=ty" json:"ty,omitempty"`
+}
+
+func (m *ExchangeAction) Reset()                    { *m = ExchangeAction{} }
+func (m *ExchangeAction) String() string            { return proto.CompactTextString(m) }
+func (*ExchangeAction) ProtoMessage()               {}
+func (*ExchangeAction) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+type isExchangeAction_Value interface {
+	isExchangeAction_Value()
+}
+
+type ExchangeAction_LimitOrder struct {
+	LimitOrder *LimitOrder `protobuf:"bytes,1,opt,name=limitOrder,oneof"`
+}
+type ExchangeAction_RevokeOrder struct {
+	RevokeOrder *RevokeOrder `protobuf:"bytes,3,opt,name=revokeOrder,oneof"`
+}
+
+func (*ExchangeAction_LimitOrder) isExchangeAction_Value()  {}
+func (*ExchangeAction_RevokeOrder) isExchangeAction_Value() {}
+
+func (m *ExchangeAction) GetValue() isExchangeAction_Value {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *ExchangeAction) GetLimitOrder() *LimitOrder {
+	if x, ok := m.GetValue().(*ExchangeAction_LimitOrder); ok {
+		return x.LimitOrder
+	}
+	return nil
+}
+
+func (m *ExchangeAction) GetRevokeOrder() *RevokeOrder {
+	if x, ok := m.GetValue().(*ExchangeAction_RevokeOrder); ok {
+		return x.RevokeOrder
+	}
+	return nil
+}
+
+func (m *ExchangeAction) GetTy() int32 {
+	if m != nil {
+		return m.Ty
+	}
+	return 0
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*ExchangeAction) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _ExchangeAction_OneofMarshaler, _ExchangeAction_OneofUnmarshaler, _ExchangeAction_OneofSizer, []interface{}{
+		(*ExchangeAction_LimitOrder)(nil),
+		(*ExchangeAction_RevokeOrder)(nil),
+	}
+}
+
+func _ExchangeAction_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*ExchangeAction)
+	// value
+	switch x := m.Value.(type) {
+	case *ExchangeAction_LimitOrder:
+		b.EncodeVarint(1<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.LimitOrder); err != nil {
+			return err
+		}
+	case *ExchangeAction_RevokeOrder:
+		b.EncodeVarint(3<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.RevokeOrder); err != nil {
+			return err
+		}
+	case nil:
+	default:
+		return fmt.Errorf("ExchangeAction.Value has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _ExchangeAction_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*ExchangeAction)
+	switch tag {
+	case 1: // value.limitOrder
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(LimitOrder)
+		err := b.DecodeMessage(msg)
+		m.Value = &ExchangeAction_LimitOrder{msg}
+		return true, err
+	case 3: // value.revokeOrder
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(RevokeOrder)
+		err := b.DecodeMessage(msg)
+		m.Value = &ExchangeAction_RevokeOrder{msg}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _ExchangeAction_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*ExchangeAction)
+	// value
+	switch x := m.Value.(type) {
+	case *ExchangeAction_LimitOrder:
+		s := proto.Size(x.LimitOrder)
+		n += proto.SizeVarint(1<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *ExchangeAction_RevokeOrder:
+		s := proto.Size(x.RevokeOrder)
+		n += proto.SizeVarint(3<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+// 限价订单
+type LimitOrder struct {
+	// 交易对
+	LeftAsset *Asset `protobuf:"bytes,1,opt,name=leftAsset" json:"leftAsset,omitempty"`
+	// 交易对
+	RightAsset *Asset `protobuf:"bytes,2,opt,name=rightAsset" json:"rightAsset,omitempty"`
+	// 价格
+	Price float32 `protobuf:"fixed32,3,opt,name=price" json:"price,omitempty"`
+	// 总量
+	Amount int64 `protobuf:"varint,4,opt,name=amount" json:"amount,omitempty"`
+	// 操作， 1为买，2为卖
+	Op int32 `protobuf:"varint,5,opt,name=op" json:"op,omitempty"`
+}
+
+func (m *LimitOrder) Reset()                    { *m = LimitOrder{} }
+func (m *LimitOrder) String() string            { return proto.CompactTextString(m) }
+func (*LimitOrder) ProtoMessage()               {}
+func (*LimitOrder) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func (m *LimitOrder) GetLeftAsset() *Asset {
+	if m != nil {
+		return m.LeftAsset
+	}
+	return nil
+}
+
+func (m *LimitOrder) GetRightAsset() *Asset {
+	if m != nil {
+		return m.RightAsset
+	}
+	return nil
+}
+
+func (m *LimitOrder) GetPrice() float32 {
+	if m != nil {
+		return m.Price
+	}
+	return 0
+}
+
+func (m *LimitOrder) GetAmount() int64 {
+	if m != nil {
+		return m.Amount
+	}
+	return 0
+}
+
+func (m *LimitOrder) GetOp() int32 {
+	if m != nil {
+		return m.Op
+	}
+	return 0
+}
+
+// 市价委托
+type MarketOrder struct {
+	// 资产1
+	LeftAsset *Asset `protobuf:"bytes,1,opt,name=leftAsset" json:"leftAsset,omitempty"`
+	// 资产2
+	RightAsset *Asset `protobuf:"bytes,2,opt,name=rightAsset" json:"rightAsset,omitempty"`
+	// 总量
+	Amount int64 `protobuf:"varint,3,opt,name=amount" json:"amount,omitempty"`
+	// 操作， 1为买，2为卖
+	Op int32 `protobuf:"varint,4,opt,name=op" json:"op,omitempty"`
+}
+
+func (m *MarketOrder) Reset()                    { *m = MarketOrder{} }
+func (m *MarketOrder) String() string            { return proto.CompactTextString(m) }
+func (*MarketOrder) ProtoMessage()               {}
+func (*MarketOrder) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func (m *MarketOrder) GetLeftAsset() *Asset {
+	if m != nil {
+		return m.LeftAsset
+	}
+	return nil
+}
+
+func (m *MarketOrder) GetRightAsset() *Asset {
+	if m != nil {
+		return m.RightAsset
+	}
+	return nil
+}
+
+func (m *MarketOrder) GetAmount() int64 {
+	if m != nil {
+		return m.Amount
+	}
+	return 0
+}
+
+func (m *MarketOrder) GetOp() int32 {
+	if m != nil {
+		return m.Op
+	}
+	return 0
+}
+
+// 撤回订单
+type RevokeOrder struct {
+	// 订单号
+	OrderID string `protobuf:"bytes,1,opt,name=orderID" json:"orderID,omitempty"`
+}
+
+func (m *RevokeOrder) Reset()                    { *m = RevokeOrder{} }
+func (m *RevokeOrder) String() string            { return proto.CompactTextString(m) }
+func (*RevokeOrder) ProtoMessage()               {}
+func (*RevokeOrder) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+
+func (m *RevokeOrder) GetOrderID() string {
+	if m != nil {
+		return m.OrderID
+	}
+	return ""
+}
+
+// 资产类型
+type Asset struct {
+	Execer string `protobuf:"bytes,1,opt,name=execer" json:"execer,omitempty"`
+	Symbol string `protobuf:"bytes,2,opt,name=symbol" json:"symbol,omitempty"`
+}
+
+func (m *Asset) Reset()                    { *m = Asset{} }
+func (m *Asset) String() string            { return proto.CompactTextString(m) }
+func (*Asset) ProtoMessage()               {}
+func (*Asset) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+
+func (m *Asset) GetExecer() string {
+	if m != nil {
+		return m.Execer
+	}
+	return ""
+}
+
+func (m *Asset) GetSymbol() string {
+	if m != nil {
+		return m.Symbol
+	}
+	return ""
+}
+
+// 订单信息
+type Order struct {
+	OrderID string `protobuf:"bytes,1,opt,name=orderID" json:"orderID,omitempty"`
+	// Types that are valid to be assigned to Value:
+	//	*Order_LimitOrder
+	//	*Order_MarketOrder
+	Value isOrder_Value `protobuf_oneof:"value"`
+	// 挂单类型
+	Ty int32 `protobuf:"varint,4,opt,name=ty" json:"ty,omitempty"`
+	// 已经成交的数量
+	Executed int64 `protobuf:"varint,5,opt,name=executed" json:"executed,omitempty"`
+	// 余额
+	Balance int64 `protobuf:"varint,6,opt,name=balance" json:"balance,omitempty"`
+	// 状态,0 挂单中ordered， 1 完成completed， 2撤回 revoked
+	Status int32 `protobuf:"varint,7,opt,name=status" json:"status,omitempty"`
+	// 用户地址
+	Addr string `protobuf:"bytes,8,opt,name=addr" json:"addr,omitempty"`
+	// 更新时间
+	UpdateTime int64 `protobuf:"varint,9,opt,name=updateTime" json:"updateTime,omitempty"`
+	// 索引
+	Index int64 `protobuf:"varint,10,opt,name=index" json:"index,omitempty"`
+}
+
+func (m *Order) Reset()                    { *m = Order{} }
+func (m *Order) String() string            { return proto.CompactTextString(m) }
+func (*Order) ProtoMessage()               {}
+func (*Order) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+
+type isOrder_Value interface {
+	isOrder_Value()
+}
+
+type Order_LimitOrder struct {
+	LimitOrder *LimitOrder `protobuf:"bytes,2,opt,name=limitOrder,oneof"`
+}
+type Order_MarketOrder struct {
+	MarketOrder *MarketOrder `protobuf:"bytes,3,opt,name=marketOrder,oneof"`
+}
+
+func (*Order_LimitOrder) isOrder_Value()  {}
+func (*Order_MarketOrder) isOrder_Value() {}
+
+func (m *Order) GetValue() isOrder_Value {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *Order) GetOrderID() string {
+	if m != nil {
+		return m.OrderID
+	}
+	return ""
+}
+
+func (m *Order) GetLimitOrder() *LimitOrder {
+	if x, ok := m.GetValue().(*Order_LimitOrder); ok {
+		return x.LimitOrder
+	}
+	return nil
+}
+
+func (m *Order) GetMarketOrder() *MarketOrder {
+	if x, ok := m.GetValue().(*Order_MarketOrder); ok {
+		return x.MarketOrder
+	}
+	return nil
+}
+
+func (m *Order) GetTy() int32 {
+	if m != nil {
+		return m.Ty
+	}
+	return 0
+}
+
+func (m *Order) GetExecuted() int64 {
+	if m != nil {
+		return m.Executed
+	}
+	return 0
+}
+
+func (m *Order) GetBalance() int64 {
+	if m != nil {
+		return m.Balance
+	}
+	return 0
+}
+
+func (m *Order) GetStatus() int32 {
+	if m != nil {
+		return m.Status
+	}
+	return 0
+}
+
+func (m *Order) GetAddr() string {
+	if m != nil {
+		return m.Addr
+	}
+	return ""
+}
+
+func (m *Order) GetUpdateTime() int64 {
+	if m != nil {
+		return m.UpdateTime
+	}
+	return 0
+}
+
+func (m *Order) GetIndex() int64 {
+	if m != nil {
+		return m.Index
+	}
+	return 0
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*Order) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _Order_OneofMarshaler, _Order_OneofUnmarshaler, _Order_OneofSizer, []interface{}{
+		(*Order_LimitOrder)(nil),
+		(*Order_MarketOrder)(nil),
+	}
+}
+
+func _Order_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*Order)
+	// value
+	switch x := m.Value.(type) {
+	case *Order_LimitOrder:
+		b.EncodeVarint(2<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.LimitOrder); err != nil {
+			return err
+		}
+	case *Order_MarketOrder:
+		b.EncodeVarint(3<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.MarketOrder); err != nil {
+			return err
+		}
+	case nil:
+	default:
+		return fmt.Errorf("Order.Value has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _Order_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*Order)
+	switch tag {
+	case 2: // value.limitOrder
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(LimitOrder)
+		err := b.DecodeMessage(msg)
+		m.Value = &Order_LimitOrder{msg}
+		return true, err
+	case 3: // value.marketOrder
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(MarketOrder)
+		err := b.DecodeMessage(msg)
+		m.Value = &Order_MarketOrder{msg}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _Order_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*Order)
+	// value
+	switch x := m.Value.(type) {
+	case *Order_LimitOrder:
+		s := proto.Size(x.LimitOrder)
+		n += proto.SizeVarint(2<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *Order_MarketOrder:
+		s := proto.Size(x.MarketOrder)
+		n += proto.SizeVarint(3<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+// 挂单价
+type OrderPrice struct {
+	Price float32 `protobuf:"fixed32,1,opt,name=price" json:"price,omitempty"`
+	Index int64   `protobuf:"varint,2,opt,name=index" json:"index,omitempty"`
+}
+
+func (m *OrderPrice) Reset()                    { *m = OrderPrice{} }
+func (m *OrderPrice) String() string            { return proto.CompactTextString(m) }
+func (*OrderPrice) ProtoMessage()               {}
+func (*OrderPrice) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+
+func (m *OrderPrice) GetPrice() float32 {
+	if m != nil {
+		return m.Price
+	}
+	return 0
+}
+
+func (m *OrderPrice) GetIndex() int64 {
+	if m != nil {
+		return m.Index
+	}
+	return 0
+}
+
+// 单号
+type OrderID struct {
+	ID    string `protobuf:"bytes,1,opt,name=ID" json:"ID,omitempty"`
+	Index int64  `protobuf:"varint,2,opt,name=index" json:"index,omitempty"`
+}
+
+func (m *OrderID) Reset()                    { *m = OrderID{} }
+func (m *OrderID) String() string            { return proto.CompactTextString(m) }
+func (*OrderID) ProtoMessage()               {}
+func (*OrderID) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+
+func (m *OrderID) GetID() string {
+	if m != nil {
+		return m.ID
+	}
+	return ""
+}
+
+func (m *OrderID) GetIndex() int64 {
+	if m != nil {
+		return m.Index
+	}
+	return 0
+}
+
+// 查询接口
+type QueryMarketDepth struct {
+	// 资产1
+	LeftAsset *Asset `protobuf:"bytes,1,opt,name=leftAsset" json:"leftAsset,omitempty"`
+	// 资产2
+	RightAsset *Asset `protobuf:"bytes,2,opt,name=rightAsset" json:"rightAsset,omitempty"`
+	// 操作， 1为买，2为卖
+	Op int32 `protobuf:"varint,3,opt,name=op" json:"op,omitempty"`
+	// 这里用价格作为索引值
+	Price float32 `protobuf:"fixed32,4,opt,name=price" json:"price,omitempty"`
+	// 单页返回多少条记录，默认返回10条,为了系统安全最多单次只能返回20条
+	Count int32 `protobuf:"varint,5,opt,name=count" json:"count,omitempty"`
+}
+
+func (m *QueryMarketDepth) Reset()                    { *m = QueryMarketDepth{} }
+func (m *QueryMarketDepth) String() string            { return proto.CompactTextString(m) }
+func (*QueryMarketDepth) ProtoMessage()               {}
+func (*QueryMarketDepth) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+
+func (m *QueryMarketDepth) GetLeftAsset() *Asset {
+	if m != nil {
+		return m.LeftAsset
+	}
+	return nil
+}
+
+func (m *QueryMarketDepth) GetRightAsset() *Asset {
+	if m != nil {
+		return m.RightAsset
+	}
+	return nil
+}
+
+func (m *QueryMarketDepth) GetOp() int32 {
+	if m != nil {
+		return m.Op
+	}
+	return 0
+}
+
+func (m *QueryMarketDepth) GetPrice() float32 {
+	if m != nil {
+		return m.Price
+	}
+	return 0
+}
+
+func (m *QueryMarketDepth) GetCount() int32 {
+	if m != nil {
+		return m.Count
+	}
+	return 0
+}
+
+// 市场深度
+type MarketDepth struct {
+	// 资产1
+	LeftAsset *Asset `protobuf:"bytes,1,opt,name=leftAsset" json:"leftAsset,omitempty"`
+	// 资产2
+	RightAsset *Asset `protobuf:"bytes,2,opt,name=rightAsset" json:"rightAsset,omitempty"`
+	// 价格
+	Price float32 `protobuf:"fixed32,3,opt,name=price" json:"price,omitempty"`
+	// 总量
+	Amount int64 `protobuf:"varint,4,opt,name=amount" json:"amount,omitempty"`
+	// 操作， 1为买，2为卖
+	Op int32 `protobuf:"varint,5,opt,name=op" json:"op,omitempty"`
+}
+
+func (m *MarketDepth) Reset()                    { *m = MarketDepth{} }
+func (m *MarketDepth) String() string            { return proto.CompactTextString(m) }
+func (*MarketDepth) ProtoMessage()               {}
+func (*MarketDepth) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+
+func (m *MarketDepth) GetLeftAsset() *Asset {
+	if m != nil {
+		return m.LeftAsset
+	}
+	return nil
+}
+
+func (m *MarketDepth) GetRightAsset() *Asset {
+	if m != nil {
+		return m.RightAsset
+	}
+	return nil
+}
+
+func (m *MarketDepth) GetPrice() float32 {
+	if m != nil {
+		return m.Price
+	}
+	return 0
+}
+
+func (m *MarketDepth) GetAmount() int64 {
+	if m != nil {
+		return m.Amount
+	}
+	return 0
+}
+
+func (m *MarketDepth) GetOp() int32 {
+	if m != nil {
+		return m.Op
+	}
+	return 0
+}
+
+// 查询接口返回的市场深度列表
+type MarketDepthList struct {
+	List []*MarketDepth `protobuf:"bytes,1,rep,name=list" json:"list,omitempty"`
+}
+
+func (m *MarketDepthList) Reset()                    { *m = MarketDepthList{} }
+func (m *MarketDepthList) String() string            { return proto.CompactTextString(m) }
+func (*MarketDepthList) ProtoMessage()               {}
+func (*MarketDepthList) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+
+func (m *MarketDepthList) GetList() []*MarketDepth {
+	if m != nil {
+		return m.List
+	}
+	return nil
+}
+
+// 查询最新得成交信息,外部接口
+type QueryCompletedOrderList struct {
+	// 资产1
+	LeftAsset *Asset `protobuf:"bytes,1,opt,name=leftAsset" json:"leftAsset,omitempty"`
+	// 资产2
+	RightAsset *Asset `protobuf:"bytes,2,opt,name=rightAsset" json:"rightAsset,omitempty"`
+	// 索引值
+	Index int64 `protobuf:"varint,3,opt,name=index" json:"index,omitempty"`
+	// 单页返回多少条记录，默认返回10条,为了系统安全最多单次只能返回20条
+	Count int32 `protobuf:"varint,4,opt,name=count" json:"count,omitempty"`
+	// 0降序，1升序，默认降序
+	Direction int32 `protobuf:"varint,5,opt,name=direction" json:"direction,omitempty"`
+}
+
+func (m *QueryCompletedOrderList) Reset()                    { *m = QueryCompletedOrderList{} }
+func (m *QueryCompletedOrderList) String() string            { return proto.CompactTextString(m) }
+func (*QueryCompletedOrderList) ProtoMessage()               {}
+func (*QueryCompletedOrderList) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+
+func (m *QueryCompletedOrderList) GetLeftAsset() *Asset {
+	if m != nil {
+		return m.LeftAsset
+	}
+	return nil
+}
+
+func (m *QueryCompletedOrderList) GetRightAsset() *Asset {
+	if m != nil {
+		return m.RightAsset
+	}
+	return nil
+}
+
+func (m *QueryCompletedOrderList) GetIndex() int64 {
+	if m != nil {
+		return m.Index
+	}
+	return 0
+}
+
+func (m *QueryCompletedOrderList) GetCount() int32 {
+	if m != nil {
+		return m.Count
+	}
+	return 0
+}
+
+func (m *QueryCompletedOrderList) GetDirection() int32 {
+	if m != nil {
+		return m.Direction
+	}
+	return 0
+}
+
+// 根据orderID去查询订单信息
+type QueryOrder struct {
+	OrderID string `protobuf:"bytes,1,opt,name=orderID" json:"orderID,omitempty"`
+}
+
+func (m *QueryOrder) Reset()                    { *m = QueryOrder{} }
+func (m *QueryOrder) String() string            { return proto.CompactTextString(m) }
+func (*QueryOrder) ProtoMessage()               {}
+func (*QueryOrder) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+
+func (m *QueryOrder) GetOrderID() string {
+	if m != nil {
+		return m.OrderID
+	}
+	return ""
+}
+
+// 根据地址，状态查询用户自己的挂单信息
+type QueryOrderList struct {
+	// 挂单状态必填(默认是0,只查询ordered挂单中的)
+	Status int32 `protobuf:"varint,1,opt,name=status" json:"status,omitempty"`
+	// 用户地址信息，必填
+	Address string `protobuf:"bytes,2,opt,name=address" json:"address,omitempty"`
+	// 索引值
+	Index int64 `protobuf:"varint,3,opt,name=index" json:"index,omitempty"`
+	// 单页返回多少条记录，默认返回10条,为了系统安全最多单次只能返回20条
+	Count int32 `protobuf:"varint,4,opt,name=count" json:"count,omitempty"`
+	// 0降序，1升序，默认降序
+	Direction int32 `protobuf:"varint,5,opt,name=direction" json:"direction,omitempty"`
+}
+
+func (m *QueryOrderList) Reset()                    { *m = QueryOrderList{} }
+func (m *QueryOrderList) String() string            { return proto.CompactTextString(m) }
+func (*QueryOrderList) ProtoMessage()               {}
+func (*QueryOrderList) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{14} }
+
+func (m *QueryOrderList) GetStatus() int32 {
+	if m != nil {
+		return m.Status
+	}
+	return 0
+}
+
+func (m *QueryOrderList) GetAddress() string {
+	if m != nil {
+		return m.Address
+	}
+	return ""
+}
+
+func (m *QueryOrderList) GetIndex() int64 {
+	if m != nil {
+		return m.Index
+	}
+	return 0
+}
+
+func (m *QueryOrderList) GetCount() int32 {
+	if m != nil {
+		return m.Count
+	}
+	return 0
+}
+
+func (m *QueryOrderList) GetDirection() int32 {
+	if m != nil {
+		return m.Direction
+	}
+	return 0
+}
+
+// 订单列表
+type OrderList struct {
+	List []*Order `protobuf:"bytes,1,rep,name=list" json:"list,omitempty"`
+}
+
+func (m *OrderList) Reset()                    { *m = OrderList{} }
+func (m *OrderList) String() string            { return proto.CompactTextString(m) }
+func (*OrderList) ProtoMessage()               {}
+func (*OrderList) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{15} }
+
+func (m *OrderList) GetList() []*Order {
+	if m != nil {
+		return m.List
+	}
+	return nil
+}
+
+// exchange执行票据日志
+type ReceiptExchange struct {
+	Order       *Order   `protobuf:"bytes,1,opt,name=order" json:"order,omitempty"`
+	MatchOrders []*Order `protobuf:"bytes,2,rep,name=matchOrders" json:"matchOrders,omitempty"`
+	Index       int64    `protobuf:"varint,3,opt,name=index" json:"index,omitempty"`
+}
+
+func (m *ReceiptExchange) Reset()                    { *m = ReceiptExchange{} }
+func (m *ReceiptExchange) String() string            { return proto.CompactTextString(m) }
+func (*ReceiptExchange) ProtoMessage()               {}
+func (*ReceiptExchange) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{16} }
+
+func (m *ReceiptExchange) GetOrder() *Order {
+	if m != nil {
+		return m.Order
+	}
+	return nil
+}
+
+func (m *ReceiptExchange) GetMatchOrders() []*Order {
+	if m != nil {
+		return m.MatchOrders
+	}
+	return nil
+}
+
+func (m *ReceiptExchange) GetIndex() int64 {
+	if m != nil {
+		return m.Index
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*Exchange)(nil), "types.Exchange")
+	proto.RegisterType((*ExchangeAction)(nil), "types.ExchangeAction")
+	proto.RegisterType((*LimitOrder)(nil), "types.LimitOrder")
+	proto.RegisterType((*MarketOrder)(nil), "types.MarketOrder")
+	proto.RegisterType((*RevokeOrder)(nil), "types.RevokeOrder")
+	proto.RegisterType((*Asset)(nil), "types.Asset")
+	proto.RegisterType((*Order)(nil), "types.Order")
+	proto.RegisterType((*OrderPrice)(nil), "types.OrderPrice")
+	proto.RegisterType((*OrderID)(nil), "types.OrderID")
+	proto.RegisterType((*QueryMarketDepth)(nil), "types.QueryMarketDepth")
+	proto.RegisterType((*MarketDepth)(nil), "types.MarketDepth")
+	proto.RegisterType((*MarketDepthList)(nil), "types.MarketDepthList")
+	proto.RegisterType((*QueryCompletedOrderList)(nil), "types.QueryCompletedOrderList")
+	proto.RegisterType((*QueryOrder)(nil), "types.QueryOrder")
+	proto.RegisterType((*QueryOrderList)(nil), "types.QueryOrderList")
+	proto.RegisterType((*OrderList)(nil), "types.OrderList")
+	proto.RegisterType((*ReceiptExchange)(nil), "types.ReceiptExchange")
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// Client API for Exchange service
+
+type ExchangeClient interface {
+}
+
+type exchangeClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewExchangeClient(cc *grpc.ClientConn) ExchangeClient {
+	return &exchangeClient{cc}
+}
+
+// Server API for Exchange service
+
+type ExchangeServer interface {
+}
+
+func RegisterExchangeServer(s *grpc.Server, srv ExchangeServer) {
+	s.RegisterService(&_Exchange_serviceDesc, srv)
+}
+
+var _Exchange_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "types.exchange",
+	HandlerType: (*ExchangeServer)(nil),
+	Methods:     []grpc.MethodDesc{},
+	Streams:     []grpc.StreamDesc{},
+	Metadata:    "exchange.proto",
+}
+
+func init() { proto.RegisterFile("exchange.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 649 bytes of a gzipped FileDescriptorProto
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+	0x17, 0x6a, 0x4b, 0x48, 0xca, 0xed, 0x22, 0xb5, 0x20, 0xfa, 0xde, 0xef, 0xd2, 0xb2, 0x59, 0xfe,
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+	0xa5, 0x7b, 0x49, 0xb2, 0xe4, 0x25, 0xc8, 0x1e, 0xfd, 0x64, 0x70, 0x97, 0xa6, 0xf1, 0xba, 0x98,
+	0x95, 0x39, 0x4a, 0x4c, 0x69, 0x9a, 0x94, 0x63, 0xa9, 0xe5, 0xb6, 0xca, 0x70, 0x2d, 0x65, 0x98,
+	0x21, 0x78, 0xd6, 0x10, 0xf8, 0x7d, 0x08, 0xd2, 0xac, 0x42, 0x7a, 0x0a, 0x74, 0xcd, 0xe6, 0x20,
+	0xda, 0x00, 0x20, 0xfa, 0xd7, 0xdd, 0x2d, 0x9f, 0x19, 0x8c, 0x8c, 0x23, 0x95, 0x67, 0xd6, 0x8b,
+	0x9d, 0x5b, 0xaf, 0x10, 0x06, 0x6a, 0xa5, 0xb0, 0xae, 0xf5, 0x35, 0xd3, 0xc1, 0xff, 0x48, 0xfb,
+	0x09, 0x04, 0x86, 0xc8, 0xf8, 0xdc, 0xac, 0xba, 0xae, 0x91, 0x5d, 0x4f, 0xe9, 0x13, 0xac, 0x0b,
+	0x4c, 0x30, 0x2b, 0x65, 0xf7, 0x34, 0xf2, 0x08, 0xfc, 0xc2, 0x7a, 0x0f, 0xcf, 0x47, 0xb5, 0x26,
+	0x3e, 0x51, 0xd7, 0x97, 0x4c, 0xa6, 0x74, 0xa8, 0xaa, 0xb9, 0x9c, 0xdf, 0x76, 0xb8, 0xba, 0xbe,
+	0x2d, 0x50, 0x97, 0x57, 0xfb, 0xd7, 0xa3, 0x55, 0x7a, 0xb7, 0xb7, 0x7f, 0x07, 0x00, 0x00, 0xff,
+	0xff, 0xe3, 0xe1, 0xf2, 0x06, 0xc9, 0x07, 0x00, 0x00,
+}

plugin/dapp/init/init.go

@@ -7,6 +7,7 @@ import (
 	_ "github.com/33cn/plugin/plugin/dapp/dposvote"   //auto gen
 	_ "github.com/33cn/plugin/plugin/dapp/echo"       //auto gen
 	_ "github.com/33cn/plugin/plugin/dapp/evm"        //auto gen
+	_ "github.com/33cn/plugin/plugin/dapp/exchange"   //auto gen
 	_ "github.com/33cn/plugin/plugin/dapp/game"       //auto gen
 	_ "github.com/33cn/plugin/plugin/dapp/guess"      //auto gen
 	_ "github.com/33cn/plugin/plugin/dapp/hashlock"   //auto gen