package opts import ( "encoding/csv" "errors" "fmt" "os" "strconv" "strings" swarmtypes "github.com/docker/docker/api/types/swarm" ) // ConfigOpt is a Value type for parsing configs type ConfigOpt struct { values []*swarmtypes.ConfigReference } // Set a new config value func (o *ConfigOpt) Set(value string) error { csvReader := csv.NewReader(strings.NewReader(value)) fields, err := csvReader.Read() if err != nil { return err } options := &swarmtypes.ConfigReference{ File: &swarmtypes.ConfigReferenceFileTarget{ UID: "0", GID: "0", Mode: 0o444, }, } // support a simple syntax of --config foo if len(fields) == 1 && !strings.Contains(fields[0], "=") { options.File.Name = fields[0] options.ConfigName = fields[0] o.values = append(o.values, options) return nil } for _, field := range fields { key, val, ok := strings.Cut(field, "=") if !ok || key == "" { return fmt.Errorf("invalid field '%s' must be a key=value pair", field) } // TODO(thaJeztah): these options should not be case-insensitive. switch strings.ToLower(key) { case "source", "src": options.ConfigName = val case "target": options.File.Name = val case "uid": options.File.UID = val case "gid": options.File.GID = val case "mode": m, err := strconv.ParseUint(val, 0, 32) if err != nil { return fmt.Errorf("invalid mode specified: %v", err) } options.File.Mode = os.FileMode(m) default: return fmt.Errorf("invalid field in config request: %s", key) } } if options.ConfigName == "" { return errors.New("source is required") } if options.File.Name == "" { options.File.Name = options.ConfigName } o.values = append(o.values, options) return nil } // Type returns the type of this option func (o *ConfigOpt) Type() string { return "config" } // String returns a string repr of this option func (o *ConfigOpt) String() string { configs := []string{} for _, config := range o.values { repr := fmt.Sprintf("%s -> %s", config.ConfigName, config.File.Name) configs = append(configs, repr) } return strings.Join(configs, ", ") } // Value returns the config requests func (o *ConfigOpt) Value() []*swarmtypes.ConfigReference { return o.values }