mirror of
https://github.com/go-gitea/gitea.git
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59db4154eb
1. use MockVariableValue as much as possible 2. use wg.Go as much as possible instead of Add/Done 3. simplify global lock's DefaultLocker logic to make it easier to test 4. introduce a general approach for getting external service config in CI 5. remove unclear & unnecessary "t.Skip" 6. use modern generic syntax for remaining "DecodeJSON" calls 7. clarify test result for "list gitignore templates" and "list licenses"
83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
// Copyright 2024 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package globallock
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import (
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"context"
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"sync"
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"sync/atomic"
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"code.gitea.io/gitea/modules/setting"
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)
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var (
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defaultLocker atomic.Pointer[Locker]
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defaultMutex sync.Mutex
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)
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func initDefaultLocker() Locker {
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switch setting.GlobalLock.ServiceType {
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case "redis":
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return NewRedisLocker(setting.GlobalLock.ServiceConnStr)
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default: // "memory"
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return NewMemoryLocker()
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}
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}
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// DefaultLocker returns the default locker.
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func DefaultLocker() Locker {
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ptr := defaultLocker.Load()
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if ptr == nil {
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defaultMutex.Lock()
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ptr = defaultLocker.Load()
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if ptr == nil {
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ptr = new(initDefaultLocker())
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defaultLocker.Store(ptr)
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}
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defaultMutex.Unlock()
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ptr = defaultLocker.Load()
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}
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return *ptr
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}
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// Lock tries to acquire a lock for the given key, it uses the default locker.
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// Read the documentation of Locker.Lock for more information about the behavior.
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func Lock(ctx context.Context, key string) (ReleaseFunc, error) {
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return DefaultLocker().Lock(ctx, key)
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}
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// TryLock tries to acquire a lock for the given key, it uses the default locker.
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// Read the documentation of Locker.TryLock for more information about the behavior.
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func TryLock(ctx context.Context, key string) (bool, ReleaseFunc, error) {
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return DefaultLocker().TryLock(ctx, key)
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}
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// LockAndDo tries to acquire a lock for the given key and then calls the given function.
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// It uses the default locker, and it will return an error if failed to acquire the lock.
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func LockAndDo(ctx context.Context, key string, f func(context.Context) error) error {
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release, err := Lock(ctx, key)
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if err != nil {
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return err
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}
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defer release()
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return f(ctx)
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}
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// TryLockAndDo tries to acquire a lock for the given key and then calls the given function.
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// It uses the default locker, and it will return false if failed to acquire the lock.
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func TryLockAndDo(ctx context.Context, key string, f func(context.Context) error) (bool, error) {
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ok, release, err := TryLock(ctx, key)
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if err != nil {
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return false, err
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}
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defer release()
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if !ok {
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return false, nil
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}
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return true, f(ctx)
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}
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