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oracle_data.go
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oracle_data.go
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// 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 oracles
import (
"fmt"
"code.vegaprotocol.io/vega/core/types"
"code.vegaprotocol.io/vega/libs/num"
"code.vegaprotocol.io/vega/logging"
"go.uber.org/zap"
)
// OracleData holds normalized data coming from an oracle.
type OracleData struct {
Signers []*types.Signer
Data map[string]string
}
func (d OracleData) GetUint(name string) (*num.Uint, error) {
value, ok := d.Data[name]
if !ok {
return nil, errPropertyNotFound(name)
}
val, fail := num.UintFromString(value, 10)
if fail {
return nil, errInvalidString(name, value)
}
return val, nil
}
// GetInteger converts the value associated to propertyName into an integer.
func (d OracleData) GetInteger(propertyName string) (*num.Int, error) {
value, ok := d.Data[propertyName]
if !ok {
return num.IntZero(), errPropertyNotFound(propertyName)
}
return toInteger(value)
}
// GetDecimal converts the value associated to propertyName into a decimal.
func (d OracleData) GetDecimal(propertyName string) (num.Decimal, error) {
value, ok := d.Data[propertyName]
if !ok {
return num.DecimalZero(), errPropertyNotFound(propertyName)
}
return toDecimal(value)
}
// GetBoolean converts the value associated to propertyName into a boolean.
func (d OracleData) GetBoolean(propertyName string) (bool, error) {
value, ok := d.Data[propertyName]
if !ok {
return false, errPropertyNotFound(propertyName)
}
return toBoolean(value)
}
// GetString returns the value associated to propertyName.
func (d OracleData) GetString(propertyName string) (string, error) {
value, ok := d.Data[propertyName]
if !ok {
return "", errPropertyNotFound(propertyName)
}
return value, nil
}
// GetTimestamp converts the value associated to propertyName into a timestamp.
func (d OracleData) GetTimestamp(propertyName string) (int64, error) {
value, ok := d.Data[propertyName]
if !ok {
return 0, errPropertyNotFound(propertyName)
}
return toTimestamp(value)
}
// FromInternalOracle returns true if the oracle data has been emitted by an
// internal oracle.
func (d OracleData) FromInternalOracle() bool {
return len(d.Signers) == 0
}
func (d OracleData) Debug() []zap.Field {
keys := ""
for _, key := range d.Signers {
keys += key.String() + " "
}
fields := []zap.Field{
logging.String("Signers", keys),
}
for property, value := range d.Data {
fields = append(fields, logging.String(property, value))
}
return fields
}
// errPropertyNotFound is returned when the property is not present in the Data.
func errPropertyNotFound(propertyName string) error {
return fmt.Errorf("property \"%s\" not found", propertyName)
}
func errInvalidString(name, val string) error {
return fmt.Errorf("could not parse value '%s' for property '%s'", val, name)
}