-
Notifications
You must be signed in to change notification settings - Fork 22
/
openoracle.go
61 lines (53 loc) · 2.06 KB
/
openoracle.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
// Copyright (C) 2023 Gobalsky Labs Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package adaptors
import (
"fmt"
"code.vegaprotocol.io/vega/core/datasource/common"
"code.vegaprotocol.io/vega/core/datasource/external/openoracle"
"code.vegaprotocol.io/vega/libs/crypto"
)
// OpenOracleAdaptor is a specific oracle Adaptor for Open Oracle / Open Price Feed
// standard.
// Link: https://compound.finance/docs/prices
type OpenOracleAdaptor struct{}
// NewOpenOracleAdaptor creates a new OpenOracleAdaptor.
func NewOpenOracleAdaptor() *OpenOracleAdaptor {
return &OpenOracleAdaptor{}
}
// Normalise normalises an Open Oracle / Open Price Feed payload into an signed.Data.
// The public key from the transaction is not used, only those from the Open
// Oracle data.
func (a *OpenOracleAdaptor) Normalise(_ crypto.PublicKey, data []byte) (*common.Data, error) {
response, err := openoracle.Unmarshal(data)
if err != nil {
return nil, fmt.Errorf("couldn't unmarshal Open Oracle data: %w", err)
}
pubKeys, kvs, err := openoracle.Verify(*response)
if err != nil {
return nil, fmt.Errorf("invalid Open Oracle response: %w", err)
}
pubKeysSigners := make([]*common.Signer, len(pubKeys))
for i, pk := range pubKeys {
pubKeysSigners[i] = common.CreateSignerFromString(pk, common.SignerTypeEthAddress)
}
return &common.Data{
Signers: pubKeysSigners,
Data: kvs,
MetaData: map[string]string{
"open-oracle-timestamp": response.Timestamp,
},
}, nil
}