package api import ( "encoding/json" "fmt" "math/big" "reflect" "github.com/ethereum/go-ethereum/rpc/shared" ) type WaitForBlockArgs struct { MinHeight int Timeout int // in seconds } func (args *WaitForBlockArgs) UnmarshalJSON(b []byte) (err error) { var obj []interface{} if err := json.Unmarshal(b, &obj); err != nil { return shared.NewDecodeParamError(err.Error()) } if len(obj) > 2 { return fmt.Errorf("waitForArgs needs 0, 1, 2 arguments") } // default values when not provided args.MinHeight = -1 args.Timeout = -1 if len(obj) >= 1 { var minHeight *big.Int if minHeight, err = numString(obj[0]); err != nil { return err } args.MinHeight = int(minHeight.Int64()) } if len(obj) >= 2 { timeout, err := numString(obj[1]) if err != nil { return err } args.Timeout = int(timeout.Int64()) } return nil } type MetricsArgs struct { Raw bool } func (args *MetricsArgs) UnmarshalJSON(b []byte) (err error) { var obj []interface{} if err := json.Unmarshal(b, &obj); err != nil { return shared.NewDecodeParamError(err.Error()) } if len(obj) > 1 { return fmt.Errorf("metricsArgs needs 0, 1 arguments") } // default values when not provided if len(obj) >= 1 && obj[0] != nil { if value, ok := obj[0].(bool); !ok { return fmt.Errorf("invalid argument %v", reflect.TypeOf(obj[0])) } else { args.Raw = value } } return nil }