mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
58 lines
1.8 KiB
Go
58 lines
1.8 KiB
Go
// Copyright 2018 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package snapshot
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import "encoding/binary"
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type revision struct {
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main int64
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sub int64
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}
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// GreaterThan should be synced with function in server
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// https://github.com/etcd-io/etcd/blob/main/server/storage/mvcc/revision.go
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func (a revision) GreaterThan(b revision) bool {
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if a.main > b.main {
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return true
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}
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if a.main < b.main {
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return false
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}
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return a.sub > b.sub
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}
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// bytesToRev should be synced with function in server
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// https://github.com/etcd-io/etcd/blob/main/server/storage/mvcc/revision.go
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func bytesToRev(bytes []byte) revision {
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return revision{
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main: int64(binary.BigEndian.Uint64(bytes[0:8])),
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sub: int64(binary.BigEndian.Uint64(bytes[9:])),
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}
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}
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// revToBytes should be synced with function in server
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// https://github.com/etcd-io/etcd/blob/main/server/storage/mvcc/revision.go
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func revToBytes(bytes []byte, rev revision) {
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binary.BigEndian.PutUint64(bytes[0:8], uint64(rev.main))
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bytes[8] = '_'
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binary.BigEndian.PutUint64(bytes[9:], uint64(rev.sub))
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}
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// initIndex implements ConsistentIndexGetter so the snapshot won't block
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// the new raft instance by waiting for a future raft index.
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type initIndex int
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func (i *initIndex) ConsistentIndex() uint64 { return uint64(*i) }
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