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manage_data.go
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manage_data.go
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package txnbuild
import (
"github.com/stellar/go/support/errors"
"github.com/stellar/go/xdr"
)
// ManageData represents the Stellar manage data operation. See
// https://developers.stellar.org/docs/start/list-of-operations/
type ManageData struct {
Name string
Value []byte
SourceAccount string
}
// BuildXDR for ManageData returns a fully configured XDR Operation.
func (md *ManageData) BuildXDR() (xdr.Operation, error) {
xdrOp := xdr.ManageDataOp{DataName: xdr.String64(md.Name)}
// No data value clears the named data entry on the account
if md.Value == nil {
xdrOp.DataValue = nil
} else {
xdrDV := xdr.DataValue(md.Value)
xdrOp.DataValue = &xdrDV
}
opType := xdr.OperationTypeManageData
body, err := xdr.NewOperationBody(opType, xdrOp)
if err != nil {
return xdr.Operation{}, errors.Wrap(err, "failed to build XDR OperationBody")
}
op := xdr.Operation{Body: body}
SetOpSourceAccount(&op, md.SourceAccount)
return op, nil
}
// FromXDR for ManageData initialises the txnbuild struct from the corresponding xdr Operation.
func (md *ManageData) FromXDR(xdrOp xdr.Operation) error {
result, ok := xdrOp.Body.GetManageDataOp()
if !ok {
return errors.New("error parsing create_account operation from xdr")
}
md.SourceAccount = accountFromXDR(xdrOp.SourceAccount)
md.Name = string(result.DataName)
if result.DataValue != nil {
md.Value = *result.DataValue
} else {
md.Value = nil
}
return nil
}
// Validate for ManageData validates the required struct fields. It returns an error if any
// of the fields are invalid. Otherwise, it returns nil.
func (md *ManageData) Validate() error {
if len(md.Name) > 64 {
return NewValidationError("Name", "maximum length is 64 characters")
}
if len(md.Value) > 64 {
return NewValidationError("Value", "maximum length is 64 bytes")
}
return nil
}
// GetSourceAccount returns the source account of the operation, or the empty string if not
// set.
func (md *ManageData) GetSourceAccount() string {
return md.SourceAccount
}