53 lines
826 B
Go
53 lines
826 B
Go
package lock
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import (
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"errors"
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"path"
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"sync"
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"github.com/spf13/viper"
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)
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var lock *viper.Viper
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var file string
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var once sync.Once
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func getLock() *viper.Viper {
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if lock == nil {
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once.Do(func() {
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lock = viper.New()
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lock.SetDefault("running", false)
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p := path.Dir(viper.ConfigFileUsed())
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file = path.Join(p, ".autorestic.lock.yml")
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lock.SetConfigFile(file)
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lock.SetConfigType("yml")
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lock.ReadInConfig()
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})
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}
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return lock
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}
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func set(locked bool) error {
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lock := getLock()
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if locked {
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running := lock.GetBool("running")
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if running {
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return errors.New("an instance is already running")
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}
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}
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lock.Set("running", locked)
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if err := lock.WriteConfigAs(file); err != nil {
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return err
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}
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return nil
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}
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func Lock() error {
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return set(true)
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}
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func Unlock() error {
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return set(false)
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}
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