/
cardano.go
138 lines (120 loc) · 4.09 KB
/
cardano.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
// MIT License
//
// Copyright (c) 2021 SundaeSwap Finance
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package gql
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"math/big"
"os"
"path/filepath"
"time"
"github.com/SundaeSwap-finance/toolkit-for-cardano/internal/cardano"
"github.com/savaki/zapctx"
"go.uber.org/zap"
)
type BuildMintTxInput struct {
AssetName string
Fee string
Quantity string
TxIn cardano.Utxo
Wallet string
}
func (r *Resolver) buildMintTx(ctx context.Context, input BuildMintTxInput) (raw []byte, err error) {
defer func(begin time.Time) {
zapctx.FromContext(ctx).Info("build mint-tx",
zap.Duration("elapsed", time.Now().Sub(begin).Round(time.Millisecond)),
zap.Error(err),
)
}(time.Now())
keyHash, err := r.config.CLI.KeyHash(ctx, input.Wallet)
if err != nil {
return nil, fmt.Errorf("failed to build mint tx: %w", err)
}
script, scriptCleanup, err := buildScript(r.config.CLI.DataDir(), keyHash)
if err != nil {
return nil, fmt.Errorf("failed to build mint tx: %w", err)
}
defer scriptCleanup()
policyID, err := r.config.CLI.PolicyID(ctx, script)
if err != nil {
return nil, fmt.Errorf("failed to build mint tx: %w", err)
}
address, err := r.config.CLI.NormalizeAddress(input.Wallet)
if err != nil {
return nil, fmt.Errorf("failed to build mint tx: %w", err)
}
value, ok := big.NewInt(0).SetString(input.TxIn.Value, 10)
if !ok {
return nil, fmt.Errorf("mint failed to parse txIn amount, %v", input.TxIn.Value)
}
fee, ok := big.NewInt(0).SetString(input.Fee, 10)
if !ok {
return nil, fmt.Errorf("mint failed to parse fee, %v", fee)
}
remain := big.NewInt(0).Sub(value, fee)
mintedTokens := fmt.Sprintf("%v %v.%v", input.Quantity, policyID, input.AssetName)
return r.config.CLI.Build(
cardano.Fee(input.Fee),
cardano.TxIn(input.TxIn.Address, input.TxIn.Index),
cardano.TxOut(address, remain.String(), mintedTokens),
cardano.Mint(mintedTokens),
cardano.MintScriptFile(fmt.Sprintf(script)),
)
}
func (r *Resolver) fundWallet(ctx context.Context, address, quantity string) (err error) {
defer func(begin time.Time) {
zapctx.FromContext(ctx).Info("funded wallet",
zap.String("address", address),
zap.String("quantity", quantity),
zap.Duration("elapsed", time.Now().Sub(begin).Round(time.Millisecond)),
zap.Error(err),
)
}(time.Now())
if _, err := r.config.CLI.FundWallet(ctx, address, quantity); err != nil {
return err
}
return nil
}
func buildScript(dir, keyHash string) (string, func(), error) {
f, err := ioutil.TempFile(filepath.Join(dir, "/tmp"), "script")
if err != nil {
return "", func() {}, fmt.Errorf("failed to create script: %w", err)
}
defer f.Close()
type Record struct {
Type string `json:"type,omitempty"`
KeyHash string `json:"keyHash,omitempty"`
}
record := Record{
Type: "sig",
KeyHash: keyHash,
}
if err := json.NewEncoder(f).Encode(record); err != nil {
f.Close()
_ = os.Remove(f.Name())
return "", func() {}, fmt.Errorf("failed to write token policy script: %w", err)
}
filename := f.Name()
return filename, func() { _ = os.Remove(filename) }, nil
}