forked from ChainSafe/ChainBridge
-
Notifications
You must be signed in to change notification settings - Fork 0
/
client.go
178 lines (148 loc) · 5.44 KB
/
client.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
// Copyright 2020 ChainSafe Systems
// SPDX-License-Identifier: LGPL-3.0-only
package utils
import (
"fmt"
"math/big"
"github.com/PolkaFoundry/chainbridge-utils/msg"
"github.com/ChainSafe/log15"
gsrpc "github.com/PolkaFoundry/go-substrate-rpc-client/v3"
"github.com/PolkaFoundry/go-substrate-rpc-client/v3/signature"
"github.com/PolkaFoundry/go-substrate-rpc-client/v3/types"
)
// Client is a container for all the components required to submit extrinsics
// TODO: Perhaps this would benefit an interface so we can interchange Connection and a client like this
type Client struct {
Api *gsrpc.SubstrateAPI
Meta *types.Metadata
Genesis types.Hash
Key *signature.KeyringPair
}
func CreateClient(key *signature.KeyringPair, endpoint string) (*Client, error) {
c := &Client{Key: key}
api, err := gsrpc.NewSubstrateAPI(endpoint)
if err != nil {
return nil, err
}
c.Api = api
// Fetch metadata
meta, err := api.RPC.State.GetMetadataLatest()
if err != nil {
return nil, err
}
c.Meta = meta
// Fetch genesis hash
genesisHash, err := c.Api.RPC.Chain.GetBlockHash(0)
if err != nil {
return nil, err
}
c.Genesis = genesisHash
return c, nil
}
// Admin calls
func (c *Client) SetRelayerThreshold(threshold types.U32) error {
log15.Info("Setting threshold", "threshold", threshold)
return SubmitSudoTx(c, SetThresholdMethod, threshold)
}
func (c *Client) AddRelayer(relayer types.AccountID) error {
log15.Info("Adding relayer", "accountId", relayer)
return SubmitSudoTx(c, AddRelayerMethod, relayer)
}
func (c *Client) WhitelistChain(id msg.ChainId) error {
log15.Info("Whitelisting chain", "chainId", id)
return SubmitSudoTx(c, WhitelistChainMethod, types.U8(id))
}
func (c *Client) RegisterResource(id msg.ResourceId, method string) error {
log15.Info("Registering resource", "rId", id, "method", []byte(method))
return SubmitSudoTx(c, SetResourceMethod, types.NewBytes32(id), []byte(method))
}
// Standard transfer calls
func (c *Client) InitiateNativeTransfer(amount types.U128, recipient []byte, destId msg.ChainId) error {
log15.Info("Initiating Substrate native transfer", "amount", amount, "recipient", fmt.Sprintf("%x", recipient), "destId", destId)
return SubmitTx(c, ExampleTransferNativeMethod, amount, recipient, types.U8(destId))
}
func (c *Client) InitiateNonFungibleTransfer(tokenId types.U256, recipient []byte, destId msg.ChainId) error {
log15.Info("Initiating Substrate nft transfer", "tokenId", tokenId, "recipient", recipient, "destId", destId)
return SubmitTx(c, ExampleTransferErc721Method, recipient, tokenId, types.U8(destId))
}
func (c *Client) InitiateHashTransfer(hash types.Hash, destId msg.ChainId) error {
log15.Info("Initiating hash transfer", "hash", hash.Hex())
return SubmitTx(c, ExampleTransferHashMethod, hash, types.U8(destId))
}
// Call creation methods for batching
func (c *Client) NewSudoCall(call types.Call) (types.Call, error) {
return types.NewCall(c.Meta, string(SudoMethod), call)
}
func (c *Client) NewSetRelayerThresholdCall(threshold types.U32) (types.Call, error) {
call, err := types.NewCall(c.Meta, string(SetThresholdMethod), threshold)
if err != nil {
return types.Call{}, err
}
return c.NewSudoCall(call)
}
func (c *Client) NewAddRelayerCall(relayer types.AccountID) (types.Call, error) {
call, err := types.NewCall(c.Meta, string(AddRelayerMethod), relayer)
if err != nil {
return types.Call{}, err
}
return c.NewSudoCall(call)
}
func (c *Client) NewWhitelistChainCall(id msg.ChainId) (types.Call, error) {
call, err := types.NewCall(c.Meta, string(WhitelistChainMethod), id)
if err != nil {
return types.Call{}, err
}
return c.NewSudoCall(call)
}
func (c *Client) NewRegisterResourceCall(id msg.ResourceId, method string) (types.Call, error) {
call, err := types.NewCall(c.Meta, string(SetResourceMethod), id, method)
if err != nil {
return types.Call{}, err
}
return c.NewSudoCall(call)
}
func (c *Client) NewNativeTransferCall(amount types.U128, recipient []byte, destId msg.ChainId) (types.Call, error) {
return types.NewCall(c.Meta, string(ExampleTransferNativeMethod), amount, recipient, types.U8(destId))
}
// Utility methods
func (c *Client) LatestBlock() (uint64, error) {
head, err := c.Api.RPC.Chain.GetHeaderLatest()
if err != nil {
return 0, err
}
return uint64(head.Number), nil
}
func (c *Client) MintErc721(tokenId *big.Int, metadata []byte, recipient *signature.KeyringPair) error {
fmt.Printf("Mint info: account %x amount: %x meta: %x\n", recipient.PublicKey, types.NewU256(*tokenId), types.Bytes(metadata))
return SubmitSudoTx(c, Erc721MintMethod, types.NewAccountID(recipient.PublicKey), types.NewU256(*tokenId), types.Bytes(metadata))
}
func (c *Client) OwnerOf(tokenId *big.Int) (types.AccountID, error) {
var owner types.AccountID
tokenIdBz, err := types.EncodeToBytes(types.NewU256(*tokenId))
if err != nil {
return types.AccountID{}, err
}
exists, err := QueryStorage(c, "TokenStorage", "TokenOwner", tokenIdBz, nil, &owner)
if err != nil {
return types.AccountID{}, err
}
if !exists {
return types.AccountID{}, fmt.Errorf("token %s doesn't have an owner", tokenId.String())
}
return owner, nil
}
func (c *Client) GetDepositNonce(chain msg.ChainId) (uint64, error) {
var count types.U64
chainId, err := types.EncodeToBytes(types.U8(chain))
if err != nil {
return 0, err
}
exists, err := QueryStorage(c, BridgeStoragePrefix, "ChainNonces", chainId, nil, &count)
if err != nil {
return 0, err
}
if !exists {
return 0, nil
}
return uint64(count), nil
}