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Use global lock instead of NewExclusivePool to allow distributed lock between multiple Gitea instances #31813
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1c483f8 Use an abstract lock layer to allow distributed lock between multiple…
lunny b98fb46 Merge branch 'main' into lunny/lock_abstract2
lunny 5141395 Fix go tidy
lunny b0f6710 Revert changes about status table
lunny 1748ba8 Revert unnecessary change
lunny 0c3c1a3 refactor the names and add remove locker
lunny 3d3bfaa Merge branch 'main' into lunny/lock_abstract2
lunny 1276449 Merge branch 'main' into lunny/lock_abstract2
lunny 35daece use globallock lock
lunny fe9efa9 finish the global lock init
lunny 4bf86e9 Follow the old logic
lunny 1e1d6e9 Use lockCtx when necessary
lunny 3e268b9 Merge branch 'main' into lunny/lock_abstract2
lunny 8e09e01 Use correct ctx usage
lunny 30dc681 Merge branch 'main' into lunny/lock_abstract2
lunny 860f3ec Follow global lock refactor
lunny aa51a8c fix: always defer release
wolfogre 5df67a8 Merge branch 'main' into lunny/lock_abstract2
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| // Copyright 2023 The Gitea Authors. All rights reserved. | ||
| // SPDX-License-Identifier: MIT | ||
| | ||
| package globallock | ||
| | ||
| import ( | ||
| "context" | ||
| "sync" | ||
| "time" | ||
| | ||
| "code.gitea.io/gitea/modules/nosql" | ||
| "code.gitea.io/gitea/modules/setting" | ||
| | ||
| redsync "github.com/go-redsync/redsync/v4" | ||
| goredis "github.com/go-redsync/redsync/v4/redis/goredis/v9" | ||
| ) | ||
| | ||
| type Locker interface { | ||
| Lock() error | ||
| TryLock() (bool, error) | ||
| Unlock() (bool, error) | ||
| } | ||
| | ||
| type LockService interface { | ||
| GetLock(name string) Locker | ||
lunny marked this conversation as resolved. Outdated Show resolved Hide resolved | ||
| } | ||
| | ||
| type memoryLock struct { | ||
| mutex sync.Mutex | ||
| } | ||
| | ||
| func (r *memoryLock) Lock() error { | ||
| r.mutex.Lock() | ||
| return nil | ||
| } | ||
| | ||
| func (r *memoryLock) TryLock() (bool, error) { | ||
| return r.mutex.TryLock(), nil | ||
| } | ||
| | ||
| func (r *memoryLock) Unlock() (bool, error) { | ||
| r.mutex.Unlock() | ||
| return true, nil | ||
| } | ||
| | ||
| var _ Locker = &memoryLock{} | ||
| | ||
| type memoryLockService struct { | ||
| syncMap sync.Map | ||
| } | ||
| | ||
| var _ LockService = &memoryLockService{} | ||
| | ||
| func newMemoryLockService() *memoryLockService { | ||
| return &memoryLockService{ | ||
| syncMap: sync.Map{}, | ||
| } | ||
| } | ||
| | ||
| func (l *memoryLockService) GetLock(name string) Locker { | ||
| v, _ := l.syncMap.LoadOrStore(name, &memoryLock{}) | ||
| return v.(*memoryLock) | ||
| } | ||
| | ||
| type redisLockService struct { | ||
| rs *redsync.Redsync | ||
| } | ||
| | ||
| var _ LockService = &redisLockService{} | ||
| | ||
| func newRedisLockService(connection string) *redisLockService { | ||
| client := nosql.GetManager().GetRedisClient(connection) | ||
| | ||
| pool := goredis.NewPool(client) | ||
| | ||
| // Create an instance of redisync to be used to obtain a mutual exclusion | ||
| // lock. | ||
| rs := redsync.New(pool) | ||
| | ||
| return &redisLockService{ | ||
| rs: rs, | ||
| } | ||
| } | ||
| | ||
| type redisLock struct { | ||
| mutex *redsync.Mutex | ||
| } | ||
| | ||
| func (r *redisLockService) GetLock(name string) Locker { | ||
| return &redisLock{mutex: r.rs.NewMutex(name)} | ||
| } | ||
| | ||
| func (r *redisLock) Lock() error { | ||
| return r.mutex.Lock() | ||
lunny marked this conversation as resolved. Outdated Show resolved Hide resolved | ||
| } | ||
| | ||
| func (r *redisLock) TryLock() (bool, error) { | ||
| ctx, cancel := context.WithTimeout(context.Background(), 10*time.Millisecond) | ||
| defer cancel() | ||
| if err := r.mutex.LockContext(ctx); err != nil { | ||
| return false, err | ||
| } | ||
| return true, nil | ||
| } | ||
| | ||
| func (r *redisLock) Unlock() (bool, error) { | ||
| return r.mutex.Unlock() | ||
| } | ||
| | ||
| var ( | ||
| syncOnce sync.Once | ||
| lockService LockService | ||
| ) | ||
| | ||
| func getLockService() LockService { | ||
| syncOnce.Do(func() { | ||
| if setting.GlobalLock.ServiceType == "redis" { | ||
| lockService = newRedisLockService(setting.GlobalLock.ServiceConnStr) | ||
| } else { | ||
| lockService = newMemoryLockService() | ||
| } | ||
| }) | ||
| return lockService | ||
| } | ||
| | ||
| func GetLock(name string) Locker { | ||
| return getLockService().GetLock(name) | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| // Copyright 2024 The Gitea Authors. All rights reserved. | ||
| // SPDX-License-Identifier: MIT | ||
| | ||
| package globallock | ||
| | ||
| import ( | ||
| "testing" | ||
| | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
| | ||
| func Test_Lock(t *testing.T) { | ||
| locker := GetLock("test") | ||
| assert.NoError(t, locker.Lock()) | ||
| locker.Unlock() | ||
| | ||
| locked1, err1 := locker.TryLock() | ||
| assert.NoError(t, err1) | ||
| assert.True(t, locked1) | ||
| | ||
| locked2, err2 := locker.TryLock() | ||
| assert.NoError(t, err2) | ||
| assert.False(t, locked2) | ||
| | ||
| locker.Unlock() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| // Copyright 2024 The Gitea Authors. All rights reserved. | ||
| // SPDX-License-Identifier: MIT | ||
| | ||
| package setting | ||
| | ||
| import ( | ||
| "code.gitea.io/gitea/modules/log" | ||
| "code.gitea.io/gitea/modules/nosql" | ||
| ) | ||
| | ||
| // GlobalLock represents configuration of global lock | ||
| var GlobalLock = struct { | ||
| ServiceType string | ||
| ServiceConnStr string | ||
| }{ | ||
| ServiceType: "memory", | ||
| } | ||
| | ||
| func loadGlobalLockFrom(rootCfg ConfigProvider) { | ||
| sec := rootCfg.Section("global_lock") | ||
| GlobalLock.ServiceType = sec.Key("SERVICE_TYPE").MustString("memory") | ||
| switch GlobalLock.ServiceType { | ||
| case "memory": | ||
| case "redis": | ||
| connStr := sec.Key("SERVICE_CONN_STR").String() | ||
| if connStr == "" { | ||
| log.Fatal("SERVICE_CONN_STR is empty for redis") | ||
| } | ||
| u := nosql.ToRedisURI(connStr) | ||
| if u == nil { | ||
| log.Fatal("SERVICE_CONN_STR %s is not a valid redis connection string", connStr) | ||
| } | ||
| GlobalLock.ServiceConnStr = connStr | ||
| default: | ||
| log.Fatal("Unknown sync lock service type: %s", GlobalLock.ServiceType) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| // Copyright 2024 The Gitea Authors. All rights reserved. | ||
| // SPDX-License-Identifier: MIT | ||
| | ||
| package setting | ||
| | ||
| import ( | ||
| "testing" | ||
| | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
| | ||
| func TestLoadGlobalLockConfig(t *testing.T) { | ||
| t.Run("DefaultGlobalLockConfig", func(t *testing.T) { | ||
| iniStr := `` | ||
| cfg, err := NewConfigProviderFromData(iniStr) | ||
| assert.NoError(t, err) | ||
| | ||
| loadGlobalLockFrom(cfg) | ||
| assert.EqualValues(t, "memory", GlobalLock.ServiceType) | ||
| }) | ||
| | ||
| t.Run("RedisGlobalLockConfig", func(t *testing.T) { | ||
| iniStr := ` | ||
| [global_lock] | ||
| SERVICE_TYPE = redis | ||
| SERVICE_CONN_STR = addrs=127.0.0.1:6379 db=0 | ||
| ` | ||
| cfg, err := NewConfigProviderFromData(iniStr) | ||
| assert.NoError(t, err) | ||
| | ||
| loadGlobalLockFrom(cfg) | ||
| assert.EqualValues(t, "redis", GlobalLock.ServiceType) | ||
| assert.EqualValues(t, "addrs=127.0.0.1:6379 db=0", GlobalLock.ServiceConnStr) | ||
| }) | ||
| } |
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