mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
111 lines
3.1 KiB
Go
111 lines
3.1 KiB
Go
// Copyright 2021 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 etcdserver
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import (
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"context"
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"github.com/coreos/go-semver/semver"
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"go.uber.org/zap"
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pb "go.etcd.io/etcd/api/v3/etcdserverpb"
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"go.etcd.io/etcd/api/v3/membershippb"
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"go.etcd.io/etcd/api/v3/version"
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serverversion "go.etcd.io/etcd/server/v3/etcdserver/version"
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"go.etcd.io/etcd/server/v3/storage/backend"
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"go.etcd.io/etcd/server/v3/storage/schema"
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)
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// serverVersionAdapter implements Server interface needed by serverversion.Monitor
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type serverVersionAdapter struct {
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*EtcdServer
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tx backend.BatchTx
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}
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func newServerVersionAdapter(s *EtcdServer) *serverVersionAdapter {
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return &serverVersionAdapter{
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EtcdServer: s,
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tx: nil,
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}
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}
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var _ serverversion.Server = (*serverVersionAdapter)(nil)
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func (s *serverVersionAdapter) UpdateClusterVersion(version string) {
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// TODO switch to updateClusterVersionV3 in 3.6
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s.GoAttach(func() { s.updateClusterVersionV2(version) })
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}
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func (s *serverVersionAdapter) LinearizableReadNotify(ctx context.Context) error {
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return s.linearizableReadNotify(ctx)
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}
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func (s *serverVersionAdapter) DowngradeEnable(ctx context.Context, targetVersion *semver.Version) error {
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raftRequest := membershippb.DowngradeInfoSetRequest{Enabled: true, Ver: targetVersion.String()}
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_, err := s.raftRequest(ctx, pb.InternalRaftRequest{DowngradeInfoSet: &raftRequest})
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return err
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}
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func (s *serverVersionAdapter) DowngradeCancel(ctx context.Context) error {
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raftRequest := membershippb.DowngradeInfoSetRequest{Enabled: false}
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_, err := s.raftRequest(ctx, pb.InternalRaftRequest{DowngradeInfoSet: &raftRequest})
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return err
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}
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func (s *serverVersionAdapter) GetClusterVersion() *semver.Version {
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return s.cluster.Version()
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}
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func (s *serverVersionAdapter) GetDowngradeInfo() *serverversion.DowngradeInfo {
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return s.cluster.DowngradeInfo()
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}
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func (s *serverVersionAdapter) GetMembersVersions() map[string]*version.Versions {
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return getMembersVersions(s.lg, s.cluster, s.id, s.peerRt)
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}
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func (s *serverVersionAdapter) GetStorageVersion() *semver.Version {
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if s.tx == nil {
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s.Lock()
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defer s.Unlock()
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}
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v, err := schema.UnsafeDetectSchemaVersion(s.lg, s.tx)
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if err != nil {
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return nil
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}
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return &v
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}
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func (s *serverVersionAdapter) UpdateStorageVersion(target semver.Version) {
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if s.tx == nil {
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s.Lock()
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defer s.Unlock()
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}
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err := schema.UnsafeMigrate(s.lg, s.tx, target)
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if err != nil {
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s.lg.Error("failed migrating storage schema", zap.String("storage-version", target.String()), zap.Error(err))
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}
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}
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func (s *serverVersionAdapter) Lock() {
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s.tx = s.be.BatchTx()
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s.tx.Lock()
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}
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func (s *serverVersionAdapter) Unlock() {
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s.tx.Unlock()
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s.tx = nil
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}
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