79 lines
1.4 KiB
Go
79 lines
1.4 KiB
Go
package lock
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import (
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"os"
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"path"
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"sync"
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"github.com/cupcakearmy/autorestic/internal/colors"
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"github.com/cupcakearmy/autorestic/internal/flags"
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"github.com/spf13/viper"
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)
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var (
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lock *viper.Viper
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file string
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once sync.Once
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)
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const (
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RUNNING = "running"
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)
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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 := viper.ConfigFileUsed()
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if p == "" {
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colors.Error.Println("cannot lock before reading config location")
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os.Exit(1)
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}
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file = path.Join(path.Dir(p), ".autorestic.lock.yml")
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if !flags.CRON_LEAN {
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colors.Faint.Println("Using lock:\t", file)
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}
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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 setLockValue(key string, value interface{}) (*viper.Viper, error) {
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lock := getLock()
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if key == RUNNING {
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value := value.(bool)
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if value && lock.GetBool(key) {
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colors.Error.Println("an instance is already running. exiting")
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os.Exit(1)
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}
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}
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lock.Set(key, value)
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if err := lock.WriteConfigAs(file); err != nil {
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return nil, err
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}
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return lock, nil
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}
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func GetCron(location string) int64 {
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return getLock().GetInt64("cron." + location)
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}
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func SetCron(location string, value int64) {
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setLockValue("cron."+location, value)
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}
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func Lock() error {
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_, err := setLockValue(RUNNING, true)
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return err
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}
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func Unlock() error {
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_, err := setLockValue(RUNNING, false)
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return err
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}
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