// Copyright 2018 The etcd Authors // // 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 snapshot import "encoding/binary" type revision struct { main int64 sub int64 } // GreaterThan should be synced with function in server // https://github.com/etcd-io/etcd/blob/main/server/storage/mvcc/revision.go func (a revision) GreaterThan(b revision) bool { if a.main > b.main { return true } if a.main < b.main { return false } return a.sub > b.sub } // bytesToRev should be synced with function in server // https://github.com/etcd-io/etcd/blob/main/server/storage/mvcc/revision.go func bytesToRev(bytes []byte) revision { return revision{ main: int64(binary.BigEndian.Uint64(bytes[0:8])), sub: int64(binary.BigEndian.Uint64(bytes[9:])), } } // revToBytes should be synced with function in server // https://github.com/etcd-io/etcd/blob/main/server/storage/mvcc/revision.go func revToBytes(bytes []byte, rev revision) { binary.BigEndian.PutUint64(bytes[0:8], uint64(rev.main)) bytes[8] = '_' binary.BigEndian.PutUint64(bytes[9:], uint64(rev.sub)) } // initIndex implements ConsistentIndexGetter so the snapshot won't block // the new raft instance by waiting for a future raft index. type initIndex int func (i *initIndex) ConsistentIndex() uint64 { return uint64(*i) }