Method loadFromConfig

cmd/litestream/restore.go:328–359

loadFromConfig returns a replica & updates the restore options from a DB reference.

(_ context.Context, dbPath, configPath string, expandEnv, ifDBNotExists bool, opt *litestream.RestoreOptions)

// loadFromConfig returns a replica & updates the restore options from a DB reference.
func (c *RestoreCommand) loadFromConfig(_ context.Context, dbPath, configPath string, expandEnv, ifDBNotExists bool, opt *litestream.RestoreOptions) (*litestream.Replica, error) {
	// Load configuration.
	config, err := ReadConfigFile(configPath, expandEnv)
	if err != nil {
		return nil, err
	}

	// Lookup database from configuration file by path.
	if dbPath, err = expand(dbPath); err != nil {
		return nil, err
	}
	dbConfig := config.DBConfig(dbPath)
	if dbConfig == nil {
		return nil, fmt.Errorf("database not found in config: %s", dbPath)
	}
	db, err := NewDBFromConfig(dbConfig)
	if err != nil {
		return nil, err
	}

	// Restore into original database path if not specified.
	if opt.OutputPath == "" {
		opt.OutputPath = dbPath
	}

	// Exit successfully if the output file already exists.
	if _, err := os.Stat(opt.OutputPath); !os.IsNotExist(err) && ifDBNotExists {
		return nil, errSkipDBExists
	}

	return db.Replica, nil
}

// Usage prints the help screen to STDOUT.
func (c *RestoreCommand) Usage() {