forked from ngaut/unistore
/
state.go
70 lines (60 loc) · 2.02 KB
/
state.go
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// Copyright 2019-present PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package raftstore
import (
"encoding/binary"
"fmt"
)
type applyState struct {
appliedIndex uint64
truncatedIndex uint64
truncatedTerm uint64
}
func (s applyState) Marshal() []byte {
bin := make([]byte, 24)
binary.LittleEndian.PutUint64(bin, s.appliedIndex)
binary.LittleEndian.PutUint64(bin[8:], s.truncatedIndex)
binary.LittleEndian.PutUint64(bin[16:], s.truncatedTerm)
return bin
}
func (s *applyState) Unmarshal(data []byte) {
s.appliedIndex = binary.LittleEndian.Uint64(data)
s.truncatedIndex = binary.LittleEndian.Uint64(data[8:])
s.truncatedTerm = binary.LittleEndian.Uint64(data[16:])
}
func (s applyState) String() string {
return fmt.Sprintf("{appliedIndex:%d, truncatedIndex:%d, truncatedTerm:%d}", s.appliedIndex, s.truncatedIndex, s.truncatedTerm)
}
type raftState struct {
term uint64
vote uint64
commit uint64
lastIndex uint64
}
func (s raftState) Marshal() []byte {
bin := make([]byte, 32)
binary.LittleEndian.PutUint64(bin, s.term)
binary.LittleEndian.PutUint64(bin[8:], s.vote)
binary.LittleEndian.PutUint64(bin[16:], s.commit)
binary.LittleEndian.PutUint64(bin[24:], s.lastIndex)
return bin
}
func (s raftState) String() string {
return fmt.Sprintf("{term:%d, vote:%d, commit:%d, lastIndex:%d}", s.term, s.vote, s.commit, s.lastIndex)
}
func (s *raftState) Unmarshal(data []byte) {
s.term = binary.LittleEndian.Uint64(data)
s.vote = binary.LittleEndian.Uint64(data[8:])
s.commit = binary.LittleEndian.Uint64(data[16:])
s.lastIndex = binary.LittleEndian.Uint64(data[24:])
}