5cfc39ef5e
1. Updated etcd/protobuf/grpc dependencies: echo " hack/pin-dependency.sh github.com/golang/protobuf latest hack/pin-dependency.sh google.golang.org/protobuf latest hack/pin-dependency.sh go.etcd.io/etcd/api/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/client/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/client/pkg/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/pkg/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/server/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/tests/v3 v3.5.0-rc.0 hack/pin-dependency.sh google.golang.org/grpc latest " | bash 2. Linted transitive dependencies until versions are clean: hack/lint-dependencies.sh | grep " hack/pin-dependency.sh" | bash 3. Linted dependencies until dropped versions are clean: hack/lint-dependencies.sh | grep "dropreplace" | bash 4. Updated vendor and internal modules: hack/update-vendor.sh hack/update-internal-modules.sh Repeated steps 2-4 until clean
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
// Copyright 2015 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 mvcc
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import "encoding/binary"
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// revBytesLen is the byte length of a normal revision.
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// First 8 bytes is the revision.main in big-endian format. The 9th byte
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// is a '_'. The last 8 bytes is the revision.sub in big-endian format.
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const revBytesLen = 8 + 1 + 8
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// A revision indicates modification of the key-value space.
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// The set of changes that share same main revision changes the key-value space atomically.
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type revision struct {
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// main is the main revision of a set of changes that happen atomically.
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main int64
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// sub is the sub revision of a change in a set of changes that happen
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// atomically. Each change has different increasing sub revision in that
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// set.
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sub int64
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}
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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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func newRevBytes() []byte {
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return make([]byte, revBytesLen, markedRevBytesLen)
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}
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func revToBytes(rev revision, bytes []byte) {
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binary.BigEndian.PutUint64(bytes, 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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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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type revisions []revision
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func (a revisions) Len() int { return len(a) }
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func (a revisions) Less(i, j int) bool { return a[j].GreaterThan(a[i]) }
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func (a revisions) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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