mirror of
https://github.com/yunionio/cloudpods.git
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127 lines
2.9 KiB
Go
127 lines
2.9 KiB
Go
// Copyright 2019 Yunion
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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 lockman
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import (
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"context"
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"fmt"
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"sync"
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"testing"
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"time"
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"yunion.io/x/pkg/util/stringutils"
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)
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type FakeObject struct {
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Id string
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playerId int
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playerIdCount int
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}
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func (o *FakeObject) GetId() string {
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return o.Id
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}
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func (o *FakeObject) Keyword() string {
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return "fake"
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}
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func (o *FakeObject) push(playerId int) {
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if o.playerId >= 0 {
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if o.playerId != playerId {
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panic(fmt.Sprintf("obj locked by %d, locked again by %d", o.playerId, playerId))
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}
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} else {
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if o.playerIdCount != 0 {
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panic(fmt.Sprintf("obj unlocked but player id count %d", o.playerIdCount))
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}
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o.playerId = playerId
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}
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o.playerIdCount += 1
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}
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func (o *FakeObject) pop(playerId int) {
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if o.playerId != playerId {
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panic(fmt.Sprintf("obj previously locked by %d, now unlocked by %d", o.playerId, playerId))
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}
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o.playerIdCount -= 1
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if o.playerIdCount < 0 {
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panic("obj overly unlocked")
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} else if o.playerIdCount == 0 {
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o.playerId = -1
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}
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}
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func newSharedObject() *FakeObject {
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obj := &FakeObject{
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Id: stringutils.UUID4(),
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playerId: -1,
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playerIdCount: 0,
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}
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return obj
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}
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type testLockManagerConfig struct {
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players int
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cycles int
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shared *FakeObject
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lockman ILockManager
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}
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func testLockManager(t *testing.T, cfg *testLockManagerConfig) {
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players := cfg.players
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cycles := cfg.cycles
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shared := cfg.shared
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lockman := cfg.lockman
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bug = func(fmtStr string, fmtArgs ...interface{}) {
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t.Fatalf(fmtStr, fmtArgs...)
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}
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run := func(ctx context.Context, id int, cycle int, sleep time.Duration) {
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key := getObjectKey(shared)
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indents := []string{" ", " "}
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logpref := fmt.Sprintf("%p: %02d: %p", lockman, id, ctx)
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func() {
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fmt.Printf("%s: %s >acquire\n", logpref, indents[0])
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lockman.LockKey(ctx, key)
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shared.push(id)
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fmt.Printf("%s: %s >>acquired\n", logpref, indents[1])
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}()
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defer func() {
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fmt.Printf("%s: %s <<release\n", logpref, indents[1])
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shared.pop(id)
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lockman.UnlockKey(ctx, key)
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fmt.Printf("%s: %s <released\n", logpref, indents[0])
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}()
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time.Sleep(sleep)
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}
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var wg sync.WaitGroup
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for id := 0; id < players; id += 1 {
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wg.Add(1)
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go func(localId int) {
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ctx := context.WithValue(context.Background(), "ID", localId)
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for i := 0; i < cycles; i += 1 {
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run(ctx, localId, i, time.Duration(localId)*time.Second)
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}
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wg.Done()
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}(id)
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}
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wg.Wait()
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}
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