-
Notifications
You must be signed in to change notification settings - Fork 179
/
handler.go
331 lines (282 loc) · 11.3 KB
/
handler.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
package dex
import (
"fmt"
"strconv"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/okex/exchain/x/common"
"github.com/okex/exchain/x/common/perf"
"github.com/okex/exchain/x/dex/types"
"github.com/tendermint/tendermint/crypto/tmhash"
"github.com/tendermint/tendermint/libs/log"
)
// NewHandler handles all "dex" type messages.
func NewHandler(k IKeeper) sdk.Handler {
return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
// disable dex tx handler
return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "Dex messages are not allowd.")
ctx = ctx.WithEventManager(sdk.NewEventManager())
logger := ctx.Logger().With("module", ModuleName)
var handlerFun func() (*sdk.Result, error)
var name string
switch msg := msg.(type) {
case MsgList:
name = "handleMsgList"
handlerFun = func() (*sdk.Result, error) {
return handleMsgList(ctx, k, msg, logger)
}
case MsgDeposit:
name = "handleMsgDeposit"
handlerFun = func() (*sdk.Result, error) {
return handleMsgDeposit(ctx, k, msg, logger)
}
case MsgWithdraw:
name = "handleMsgWithDraw"
handlerFun = func() (*sdk.Result, error) {
return handleMsgWithDraw(ctx, k, msg, logger)
}
case MsgTransferOwnership:
name = "handleMsgTransferOwnership"
handlerFun = func() (*sdk.Result, error) {
return handleMsgTransferOwnership(ctx, k, msg, logger)
}
case MsgConfirmOwnership:
name = "handleMsgConfirmOwnership"
handlerFun = func() (*sdk.Result, error) {
return handleMsgConfirmOwnership(ctx, k, msg, logger)
}
case MsgCreateOperator:
name = "handleMsgCreateOperator"
handlerFun = func() (*sdk.Result, error) {
return handleMsgCreateOperator(ctx, k, msg, logger)
}
case MsgUpdateOperator:
name = "handleMsgUpdateOperator"
handlerFun = func() (*sdk.Result, error) {
return handleMsgUpdateOperator(ctx, k, msg, logger)
}
default:
return types.ErrDexUnknownMsgType(msg.Type()).Result()
}
seq := perf.GetPerf().OnDeliverTxEnter(ctx, ModuleName, name)
defer perf.GetPerf().OnDeliverTxExit(ctx, ModuleName, name, seq)
res, err := handlerFun()
common.SanityCheckHandler(res, err)
return res, err
}
}
func handleMsgList(ctx sdk.Context, keeper IKeeper, msg MsgList, logger log.Logger) (*sdk.Result, error) {
if !keeper.GetTokenKeeper().TokenExist(ctx, msg.ListAsset) ||
!keeper.GetTokenKeeper().TokenExist(ctx, msg.QuoteAsset) {
return types.ErrTokenOfPairNotExist(msg.ListAsset, msg.QuoteAsset).Result()
}
if _, exists := keeper.GetOperator(ctx, msg.Owner); !exists {
return types.ErrUnknownOperator(msg.Owner).Result()
}
tokenPair := &TokenPair{
BaseAssetSymbol: msg.ListAsset,
QuoteAssetSymbol: msg.QuoteAsset,
InitPrice: msg.InitPrice,
MaxPriceDigit: int64(DefaultMaxPriceDigitSize),
MaxQuantityDigit: int64(DefaultMaxQuantityDigitSize),
MinQuantity: sdk.MustNewDecFromStr("0.00000001"),
Owner: msg.Owner,
Delisting: false,
Deposits: DefaultTokenPairDeposit,
BlockHeight: ctx.BlockHeight(),
}
// check whether a specific token pair exists with the symbols of base asset and quote asset
// Note: aaa_bbb and bbb_aaa are actually one token pair
if keeper.GetTokenPair(ctx, fmt.Sprintf("%s_%s", tokenPair.BaseAssetSymbol, tokenPair.QuoteAssetSymbol)) != nil ||
keeper.GetTokenPair(ctx, fmt.Sprintf("%s_%s", tokenPair.QuoteAssetSymbol, tokenPair.BaseAssetSymbol)) != nil {
return types.ErrTokenPairExisted(tokenPair.BaseAssetSymbol, tokenPair.QuoteAssetSymbol).Result()
}
// deduction fee
feeCoins := keeper.GetParams(ctx).ListFee.ToCoins()
err := keeper.GetSupplyKeeper().SendCoinsFromAccountToModule(ctx, msg.Owner, keeper.GetFeeCollector(), feeCoins)
if err != nil {
return types.ErrInsufficientFeeCoins(feeCoins).Result()
}
err2 := keeper.SaveTokenPair(ctx, tokenPair)
if err2 != nil {
return types.ErrTokenPairSaveFailed(err2.Error()).Result()
}
logger.Debug(fmt.Sprintf("successfully handleMsgList: "+
"BlockHeight: %d, Msg: %+v", ctx.BlockHeight(), msg))
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute("list-asset", tokenPair.BaseAssetSymbol),
sdk.NewAttribute("quote-asset", tokenPair.QuoteAssetSymbol),
sdk.NewAttribute("init-price", tokenPair.InitPrice.String()),
sdk.NewAttribute("max-price-digit", strconv.FormatInt(tokenPair.MaxPriceDigit, 10)),
sdk.NewAttribute("max-size-digit", strconv.FormatInt(tokenPair.MaxQuantityDigit, 10)),
sdk.NewAttribute("min-trade-size", tokenPair.MinQuantity.String()),
sdk.NewAttribute("delisting", fmt.Sprintf("%t", tokenPair.Delisting)),
sdk.NewAttribute(sdk.AttributeKeyFee, feeCoins.String()),
),
)
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgDeposit(ctx sdk.Context, keeper IKeeper, msg MsgDeposit, logger log.Logger) (*sdk.Result, error) {
confirmOwnership, exist := keeper.GetConfirmOwnership(ctx, msg.Product)
if exist && !ctx.BlockTime().After(confirmOwnership.Expire) {
return types.ErrIsTransferringOwner(msg.Product).Result()
}
if sdkErr := keeper.Deposit(ctx, msg.Product, msg.Depositor, msg.Amount); sdkErr != nil {
return types.ErrDepositFailed(sdkErr.Error()).Result()
}
logger.Debug(fmt.Sprintf("successfully handleMsgDeposit: "+
"BlockHeight: %d, Msg: %+v", ctx.BlockHeight(), msg))
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, ModuleName),
),
)
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgWithDraw(ctx sdk.Context, keeper IKeeper, msg MsgWithdraw, logger log.Logger) (*sdk.Result, error) {
if sdkErr := keeper.Withdraw(ctx, msg.Product, msg.Depositor, msg.Amount); sdkErr != nil {
return nil, sdkErr
}
logger.Debug(fmt.Sprintf("successfully handleMsgWithDraw: "+
"BlockHeight: %d, Msg: %+v", ctx.BlockHeight(), msg))
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, ModuleName),
),
)
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgTransferOwnership(ctx sdk.Context, keeper IKeeper, msg MsgTransferOwnership,
logger log.Logger) (*sdk.Result, error) {
// validate
tokenPair := keeper.GetTokenPair(ctx, msg.Product)
if tokenPair == nil {
return types.ErrTokenPairNotFound(msg.Product).Result()
}
if !tokenPair.Owner.Equals(msg.FromAddress) {
return types.ErrUnauthorized(msg.FromAddress.String(), msg.Product).Result()
}
if _, exist := keeper.GetOperator(ctx, msg.ToAddress); !exist {
return types.ErrUnknownOperator(msg.ToAddress).Result()
}
confirmOwnership, exist := keeper.GetConfirmOwnership(ctx, msg.Product)
if exist && !ctx.BlockTime().After(confirmOwnership.Expire) {
return types.ErrRepeatedTransferOwner(msg.Product).Result()
}
// withdraw
if tokenPair.Deposits.IsPositive() {
if err := keeper.Withdraw(ctx, msg.Product, msg.FromAddress, tokenPair.Deposits); err != nil {
return types.ErrWithdrawFailed(err.Error()).Result()
}
}
// deduction fee
feeCoins := keeper.GetParams(ctx).TransferOwnershipFee.ToCoins()
err := keeper.GetSupplyKeeper().SendCoinsFromAccountToModule(ctx, msg.FromAddress, keeper.GetFeeCollector(), feeCoins)
if err != nil {
return types.ErrInsufficientFeeCoins(feeCoins).Result()
}
// set ConfirmOwnership
expireTime := ctx.BlockTime().Add(keeper.GetParams(ctx).OwnershipConfirmWindow)
confirmOwnership = &types.ConfirmOwnership{
Product: msg.Product,
FromAddress: msg.FromAddress,
ToAddress: msg.ToAddress,
Expire: expireTime,
}
keeper.SetConfirmOwnership(ctx, confirmOwnership)
logger.Debug(fmt.Sprintf("successfully handleMsgTransferOwnership: "+
"BlockHeight: %d, Msg: %+v", ctx.BlockHeight(), msg))
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, ModuleName),
sdk.NewAttribute(sdk.AttributeKeyFee, feeCoins.String()),
),
)
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgConfirmOwnership(ctx sdk.Context, keeper IKeeper, msg MsgConfirmOwnership, logger log.Logger) (*sdk.Result, error) {
confirmOwnership, exist := keeper.GetConfirmOwnership(ctx, msg.Product)
if !exist {
return types.ErrGetConfirmOwnershipNotExist(msg.Address.String()).Result()
}
if ctx.BlockTime().After(confirmOwnership.Expire) {
// delete ownership confirming information
keeper.DeleteConfirmOwnership(ctx, confirmOwnership.Product)
return types.ErrIsTransferOwnerExpired(confirmOwnership.Expire.String()).Result()
}
if !confirmOwnership.ToAddress.Equals(msg.Address) {
return types.ErrUnauthorized(confirmOwnership.ToAddress.String(), msg.Product).Result()
}
tokenPair := keeper.GetTokenPair(ctx, msg.Product)
if tokenPair == nil {
return types.ErrTokenPairNotFound(msg.Product).Result()
}
// transfer ownership
tokenPair.Owner = msg.Address
keeper.UpdateTokenPair(ctx, msg.Product, tokenPair)
keeper.UpdateUserTokenPair(ctx, msg.Product, confirmOwnership.FromAddress, msg.Address)
// delete ownership confirming information
keeper.DeleteConfirmOwnership(ctx, confirmOwnership.Product)
logger.Debug(fmt.Sprintf("successfully handleMsgConfirmOwnership: "+
"BlockHeight: %d, Msg: %+v", ctx.BlockHeight(), msg))
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, ModuleName),
),
)
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgCreateOperator(ctx sdk.Context, keeper IKeeper, msg MsgCreateOperator, logger log.Logger) (*sdk.Result, error) {
logger.Debug(fmt.Sprintf("handleMsgCreateOperator msg: %+v", msg))
if _, isExist := keeper.GetOperator(ctx, msg.Owner); isExist {
return types.ErrExistOperator(msg.Owner).Result()
}
operator := types.DEXOperator{
Address: msg.Owner,
HandlingFeeAddress: msg.HandlingFeeAddress,
Website: msg.Website,
InitHeight: ctx.BlockHeight(),
TxHash: fmt.Sprintf("%X", tmhash.Sum(ctx.TxBytes())),
}
keeper.SetOperator(ctx, operator)
// deduction fee
feeCoins := keeper.GetParams(ctx).RegisterOperatorFee.ToCoins()
err := keeper.GetSupplyKeeper().SendCoinsFromAccountToModule(ctx, msg.Owner, keeper.GetFeeCollector(), feeCoins)
if err != nil {
return common.ErrInsufficientCoins(DefaultParamspace, err.Error()).Result()
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, ModuleName),
sdk.NewAttribute(sdk.AttributeKeyFee, feeCoins.String()),
),
)
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgUpdateOperator(ctx sdk.Context, keeper IKeeper, msg MsgUpdateOperator, logger log.Logger) (*sdk.Result, error) {
logger.Debug(fmt.Sprintf("handleMsgUpdateOperator msg: %+v", msg))
operator, isExist := keeper.GetOperator(ctx, msg.Owner)
if !isExist {
return types.ErrUnknownOperator(msg.Owner).Result()
}
if !operator.Address.Equals(msg.Owner) {
return types.ErrUnauthorizedOperator(operator.Address.String(), msg.Owner.String()).Result()
}
operator.HandlingFeeAddress = msg.HandlingFeeAddress
operator.Website = msg.Website
keeper.SetOperator(ctx, operator)
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, ModuleName),
),
)
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}