/
meta.go
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/
meta.go
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/*
* Copyright 2019 Insolar Technologies
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package record
import (
"io"
"github.com/insolar/insolar/core"
)
// GenesisRecord is the first record created on storage. It's used to link root objects to it.
type GenesisRecord struct {
}
// PrevStateID returns previous state id.
func (r *GenesisRecord) PrevStateID() *core.RecordID {
return nil
}
// State returns state id.
func (r *GenesisRecord) State() State {
return StateActivation
}
// WriteHashData writes record data to provided writer. This data is used to calculate record's hash.
func (r *GenesisRecord) WriteHashData(w io.Writer) (int, error) {
return w.Write(SerializeRecord(r))
}
// GetMemory returns state memory.
func (*GenesisRecord) GetMemory() *core.RecordID {
return nil
}
// GetImage returns state code.
func (*GenesisRecord) GetImage() *core.RecordRef {
return nil
}
// GetIsPrototype returns state code.
func (*GenesisRecord) GetIsPrototype() bool {
return false
}
// ChildRecord is a child activation record. Its used for children iterating.
type ChildRecord struct {
PrevChild *core.RecordID
Ref core.RecordRef // Reference to the child's head.
}
// WriteHashData writes record data to provided writer. This data is used to calculate record's hash.
func (r *ChildRecord) WriteHashData(w io.Writer) (int, error) {
return w.Write(SerializeRecord(r))
}
// JetRecord represents Jet.
type JetRecord struct {
// TODO: should contain prefix.
}
// WriteHashData writes record data to provided writer. This data is used to calculate record's hash.
func (r *JetRecord) WriteHashData(w io.Writer) (int, error) {
return w.Write(SerializeRecord(r))
}