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https://github.com/etcd-io/etcd.git
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865df75714
This makes (bbolt) backend a full feature snapshot in term of WAL/raft, i.e. carries: - commit : (applied_index) - confState Benefits: - Backend will be a sufficient point in time definition sufficient to start replaying WAL. We have applied_index & confState in consistent state. - In case of emergency a backend state can be used for recovery
80 lines
2.2 KiB
Go
80 lines
2.2 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 membership_test
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"go.etcd.io/etcd/raft/v3/raftpb"
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"go.etcd.io/etcd/server/v3/etcdserver/api/membership"
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"go.etcd.io/etcd/server/v3/etcdserver/cindex"
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betesting "go.etcd.io/etcd/server/v3/mvcc/backend/testing"
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"go.uber.org/zap/zaptest"
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)
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func TestConfStateFromBackendInOneTx(t *testing.T) {
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lg := zaptest.NewLogger(t)
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be, _ := betesting.NewDefaultTmpBackend(t)
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defer betesting.Close(t, be)
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tx := be.BatchTx()
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cindex.CreateMetaBucket(tx)
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tx.Lock()
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defer tx.Unlock()
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assert.Nil(t, membership.UnsafeConfStateFromBackend(lg, tx))
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confState := raftpb.ConfState{Learners: []uint64{1, 2}, Voters: []uint64{3}, AutoLeave: false}
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membership.MustUnsafeSaveConfStateToBackend(lg, tx, &confState)
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assert.Equal(t, confState, *membership.UnsafeConfStateFromBackend(lg, tx))
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}
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func TestMustUnsafeSaveConfStateToBackend(t *testing.T) {
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lg := zaptest.NewLogger(t)
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be, _ := betesting.NewDefaultTmpBackend(t)
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defer betesting.Close(t, be)
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{
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tx := be.BatchTx()
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cindex.CreateMetaBucket(tx)
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tx.Commit()
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}
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t.Run("missing", func(t *testing.T) {
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tx := be.ReadTx()
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tx.Lock()
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defer tx.Unlock()
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assert.Nil(t, membership.UnsafeConfStateFromBackend(lg, tx))
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})
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confState := raftpb.ConfState{Learners: []uint64{1, 2}, Voters: []uint64{3}, AutoLeave: false}
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t.Run("save", func(t *testing.T) {
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tx := be.BatchTx()
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tx.Lock()
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membership.MustUnsafeSaveConfStateToBackend(lg, tx, &confState)
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tx.Unlock()
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tx.Commit()
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})
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t.Run("read", func(t *testing.T) {
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tx := be.ReadTx()
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tx.Lock()
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defer tx.Unlock()
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assert.Equal(t, confState, *membership.UnsafeConfStateFromBackend(lg, tx))
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})
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}
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