76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
package locking
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import (
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"fmt"
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"log/slog"
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"runtime"
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"sync"
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)
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var locker Locker
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var lockerMux = sync.Mutex{}
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func TryLock(key, identifier string) (ok bool) {
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if locker == nil {
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panic("no locker is registered")
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}
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_, filename, line, _ := runtime.Caller(1)
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slog.Debug("attempting to try lock", "key", key, "identifier", identifier, "caller", fmt.Sprintf("%s:%d", filename, line))
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defer slog.Debug("try lock returned", "key", key, "identifier", identifier, "locked", ok, "caller", fmt.Sprintf("%s:%d", filename, line))
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ok = locker.TryLock(key, identifier)
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return ok
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}
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func Lock(key, identifier string) {
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if locker == nil {
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panic("no locker is registered")
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}
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_, filename, line, _ := runtime.Caller(1)
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slog.Debug("attempting to lock", "key", key, "identifier", identifier, "caller", fmt.Sprintf("%s:%d", filename, line))
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defer slog.Debug("lock acquired", "key", key, "identifier", identifier, "caller", fmt.Sprintf("%s:%d", filename, line))
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locker.Lock(key, identifier)
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}
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func Unlock(key string, remove bool) {
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if locker == nil {
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panic("no locker is registered")
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}
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_, filename, line, _ := runtime.Caller(1)
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slog.Debug("attempting to unlock", "key", key, "remove", remove, "caller", fmt.Sprintf("%s:%d", filename, line))
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defer slog.Debug("unlock completed", "key", key, "remove", remove, "caller", fmt.Sprintf("%s:%d", filename, line))
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locker.Unlock(key, remove)
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}
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func LockedBy(key string) (string, bool) {
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if locker == nil {
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panic("no locker is registered")
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}
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return locker.LockedBy(key)
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}
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func Delete(key string) {
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if locker == nil {
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panic("no locker is registered")
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}
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locker.Delete(key)
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}
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func RegisterLocker(lock Locker) error {
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lockerMux.Lock()
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defer lockerMux.Unlock()
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if locker != nil {
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return fmt.Errorf("locker already registered")
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}
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locker = lock
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return nil
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}
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