-
Notifications
You must be signed in to change notification settings - Fork 18
/
openoracle.go
56 lines (48 loc) · 1.82 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
// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE.VEGA file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package adaptors
import (
"fmt"
"code.vegaprotocol.io/vega/core/openoracle"
"code.vegaprotocol.io/vega/core/oracles"
"code.vegaprotocol.io/vega/core/types"
"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 oracles.OracleData.
// The public key from the transaction is not used, only those from the Open
// Oracle data.
func (a *OpenOracleAdaptor) Normalise(_ crypto.PublicKey, data []byte) (*oracles.OracleData, 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([]*types.Signer, len(pubKeys))
for i, pk := range pubKeys {
pubKeysSigners[i] = types.CreateSignerFromString(pk, types.DataSignerTypeEthAddress)
}
return &oracles.OracleData{
Signers: pubKeysSigners,
Data: kvs,
}, nil
}