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adaptors.go
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adaptors.go
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// 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 (
"errors"
"code.vegaprotocol.io/vega/core/datasource/common"
"code.vegaprotocol.io/vega/core/datasource/spec/validation"
"code.vegaprotocol.io/vega/libs/crypto"
commandspb "code.vegaprotocol.io/vega/protos/vega/commands/v1"
)
// ErrUnknownOracleSource is used when the input data is originated from an
// unknown, unsupported or unspecified oracle source.
var ErrUnknownOracleSource = errors.New("unknown oracle source")
// Adaptor represents a adaptor that consumes and normalises data from
// a specific type of source.
type Adaptor interface {
Normalise(crypto.PublicKey, []byte) (*common.Data, error)
}
// Adaptors normalises the input data into an common.Data according to
// its source.
type Adaptors struct {
// Adaptors holds all the supported Adaptors sorted by source.
Adaptors map[commandspb.OracleDataSubmission_OracleSource]Adaptor
}
// New creates an Adaptors with all the supported oracle Adaptor.
func New() *Adaptors {
return &Adaptors{
Adaptors: map[commandspb.OracleDataSubmission_OracleSource]Adaptor{
commandspb.OracleDataSubmission_ORACLE_SOURCE_OPEN_ORACLE: NewOpenOracleAdaptor(),
commandspb.OracleDataSubmission_ORACLE_SOURCE_JSON: NewJSONAdaptor(),
},
}
}
// Normalise normalises the input data into an common.Data based on its source.
func (a *Adaptors) Normalise(txPubKey crypto.PublicKey, data commandspb.OracleDataSubmission) (*common.Data, error) {
adaptor, ok := a.Adaptors[data.Source]
if !ok {
return nil, ErrUnknownOracleSource
}
oracleData, err := adaptor.Normalise(txPubKey, data.Payload)
if err != nil {
return nil, err
}
if err = validation.CheckForInternalOracle(oracleData.Data); err != nil {
return nil, err
}
return oracleData, err
}