-
Notifications
You must be signed in to change notification settings - Fork 38
/
feeutils.go
249 lines (196 loc) · 5.81 KB
/
feeutils.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
package utils
import (
"context"
"github.com/spf13/pflag"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/tx"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth/migrations/legacytx"
"github.com/cosmos/cosmos-sdk/x/authz"
banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
wasmexported "github.com/CosmWasm/wasmd/x/wasm"
marketexported "github.com/classic-terra/core/v3/x/market/exported"
treasuryexported "github.com/classic-terra/core/v3/x/treasury/exported"
)
type (
// EstimateFeeResp defines a tx fee estimation response
EstimateFeeResp struct {
Fee legacytx.StdFee `json:"fee" yaml:"fee"`
}
)
type ComputeReqParams struct {
Memo string
ChainID string
AccountNumber uint64
Sequence uint64
GasPrices sdk.DecCoins
Gas string
GasAdjustment string
Msgs []sdk.Msg
}
// ComputeFeesWithCmd returns fee amount with cli options.
func ComputeFeesWithCmd(
clientCtx client.Context, flagSet *pflag.FlagSet, msgs ...sdk.Msg,
) (*legacytx.StdFee, error) {
txf, err := tx.NewFactoryCLI(clientCtx, flagSet)
if err != nil {
return nil, err
}
gas := txf.Gas()
if txf.SimulateAndExecute() {
txf, err := prepareFactory(clientCtx, txf)
if err != nil {
return nil, err
}
_, adj, err := tx.CalculateGas(clientCtx, txf, msgs...)
if err != nil {
return nil, err
}
gas = adj
}
// Computes taxes of the msgs
taxes, err := FilterMsgAndComputeTax(clientCtx, msgs...)
if err != nil {
return nil, err
}
fees := txf.Fees().Add(taxes...)
gasPrices := txf.GasPrices()
if !gasPrices.IsZero() {
glDec := sdk.NewDec(int64(gas))
adjustment := sdk.NewDecWithPrec(int64(txf.GasAdjustment())*100, 2)
if adjustment.LT(sdk.OneDec()) {
adjustment = sdk.OneDec()
}
// Derive the fees based on the provided gas prices, where
// fee = ceil(gasPrice * gasLimit).
gasFees := make(sdk.Coins, len(gasPrices))
for i, gp := range gasPrices {
fee := gp.Amount.Mul(glDec).Mul(adjustment)
gasFees[i] = sdk.NewCoin(gp.Denom, fee.Ceil().RoundInt())
}
fees = fees.Add(gasFees.Sort()...)
}
return &legacytx.StdFee{
Amount: fees,
Gas: gas,
}, nil
}
// FilterMsgAndComputeTax computes the stability tax on MsgSend and MsgMultiSend.
func FilterMsgAndComputeTax(clientCtx client.Context, msgs ...sdk.Msg) (taxes sdk.Coins, err error) {
taxRate, err := queryTaxRate(clientCtx)
if err != nil {
return nil, err
}
for _, msg := range msgs {
switch msg := msg.(type) {
case *banktypes.MsgSend:
tax, err := computeTax(clientCtx, taxRate, msg.Amount)
if err != nil {
return nil, err
}
taxes = taxes.Add(tax...)
case *banktypes.MsgMultiSend:
for _, input := range msg.Inputs {
tax, err := computeTax(clientCtx, taxRate, input.Coins)
if err != nil {
return nil, err
}
taxes = taxes.Add(tax...)
}
case *authz.MsgExec:
messages, err := msg.GetMessages()
if err != nil {
panic(err)
}
tax, err := FilterMsgAndComputeTax(clientCtx, messages...)
if err != nil {
return nil, err
}
taxes = taxes.Add(tax...)
case *marketexported.MsgSwapSend:
tax, err := computeTax(clientCtx, taxRate, sdk.NewCoins(msg.OfferCoin))
if err != nil {
return nil, err
}
taxes = taxes.Add(tax...)
case *wasmexported.MsgInstantiateContract:
tax, err := computeTax(clientCtx, taxRate, msg.Funds)
if err != nil {
return nil, err
}
taxes = taxes.Add(tax...)
case *wasmexported.MsgInstantiateContract2:
tax, err := computeTax(clientCtx, taxRate, msg.Funds)
if err != nil {
return nil, err
}
taxes = taxes.Add(tax...)
case *wasmexported.MsgExecuteContract:
tax, err := computeTax(clientCtx, taxRate, msg.Funds)
if err != nil {
return nil, err
}
taxes = taxes.Add(tax...)
}
}
return taxes, nil
}
// computes the stability tax according to tax-rate and tax-cap
func computeTax(clientCtx client.Context, taxRate sdk.Dec, principal sdk.Coins) (taxes sdk.Coins, err error) {
for _, coin := range principal {
taxCap, err := queryTaxCap(clientCtx, coin.Denom)
if err != nil {
return nil, err
}
taxDue := sdk.NewDecFromInt(coin.Amount).Mul(taxRate).TruncateInt()
// If tax due is greater than the tax cap, cap!
if taxDue.GT(taxCap) {
taxDue = taxCap
}
if taxDue.Equal(sdk.ZeroInt()) {
continue
}
taxes = taxes.Add(sdk.NewCoin(coin.Denom, taxDue))
}
return
}
func queryTaxRate(clientCtx client.Context) (sdk.Dec, error) {
queryClient := treasuryexported.NewQueryClient(clientCtx)
res, err := queryClient.TaxRate(context.Background(), &treasuryexported.QueryTaxRateRequest{})
if err != nil {
return sdk.ZeroDec(), err
}
return res.TaxRate, err
}
func queryTaxCap(clientCtx client.Context, denom string) (sdk.Int, error) {
queryClient := treasuryexported.NewQueryClient(clientCtx)
res, err := queryClient.TaxCap(context.Background(), &treasuryexported.QueryTaxCapRequest{Denom: denom})
if err != nil {
return sdk.NewInt(0), err
}
return res.TaxCap, err
}
// prepareFactory ensures the account defined by ctx.GetFromAddress() exists and
// if the account number and/or the account sequence number are zero (not set),
// they will be queried for and set on the provided Factory. A new Factory with
// the updated fields will be returned.
func prepareFactory(clientCtx client.Context, txf tx.Factory) (tx.Factory, error) {
from := clientCtx.GetFromAddress()
if err := txf.AccountRetriever().EnsureExists(clientCtx, from); err != nil {
return txf, err
}
initNum, initSeq := txf.AccountNumber(), txf.Sequence()
if initNum == 0 || initSeq == 0 {
num, seq, err := txf.AccountRetriever().GetAccountNumberSequence(clientCtx, from)
if err != nil {
return txf, err
}
if initNum == 0 {
txf = txf.WithAccountNumber(num)
}
if initSeq == 0 {
txf = txf.WithSequence(seq)
}
}
return txf, nil
}