package opts import ( "encoding/csv" "encoding/json" "fmt" "strconv" "strings" types "github.com/docker/libnetwork/ipamutils" ) // PoolsOpt is a Value type for parsing the default address pools definitions type PoolsOpt struct { values []*types.NetworkToSplit } // UnmarshalJSON fills values structure info from JSON input func (p *PoolsOpt) UnmarshalJSON(raw []byte) error { return json.Unmarshal(raw, &(p.values)) } // Set predefined pools func (p *PoolsOpt) Set(value string) error { csvReader := csv.NewReader(strings.NewReader(value)) fields, err := csvReader.Read() if err != nil { return err } poolsDef := types.NetworkToSplit{} for _, field := range fields { parts := strings.SplitN(field, "=", 2) if len(parts) != 2 { return fmt.Errorf("invalid field '%s' must be a key=value pair", field) } key := strings.ToLower(parts[0]) value := strings.ToLower(parts[1]) switch key { case "base": poolsDef.Base = value case "size": size, err := strconv.Atoi(value) if err != nil { return fmt.Errorf("invalid size value: %q (must be integer): %v", value, err) } poolsDef.Size = size default: return fmt.Errorf("unexpected key '%s' in '%s'", key, field) } } p.values = append(p.values, &poolsDef) return nil } // Type returns the type of this option func (p *PoolsOpt) Type() string { return "pool-options" } // String returns a string repr of this option func (p *PoolsOpt) String() string { var pools []string for _, pool := range p.values { repr := fmt.Sprintf("%s %d", pool.Base, pool.Size) pools = append(pools, repr) } return strings.Join(pools, ", ") } // Value returns the mounts func (p *PoolsOpt) Value() []*types.NetworkToSplit { return p.values } // Name returns the flag name of this option func (p *PoolsOpt) Name() string { return "default-address-pools" }