// MutateTransaction for ManageOfferBuilder causes the underylying
// ManageData to be added to the operation list for the provided
// transaction
func (m ManageOfferBuilder) MutateTransaction(o *TransactionBuilder) error {
if m.Err != nil {
return m.Err
}
if m.PassiveOffer {
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypeCreatePassiveOffer, m.PO)
o.TX.Operations = append(o.TX.Operations, m.O)
} else {
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypeManageOffer, m.MO)
o.TX.Operations = append(o.TX.Operations, m.O)
}
return m.Err
}
// MutateTransaction for PaymentBuilder causes the underylying PaymentOp
// or PathPaymentOp to be added to the operation list for the provided transaction
func (m PaymentBuilder) MutateTransaction(o *TransactionBuilder) error {
if m.Err != nil {
return m.Err
}
if m.PathPayment {
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypePathPayment, m.PP)
o.TX.Operations = append(o.TX.Operations, m.O)
return m.Err
}
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypePayment, m.P)
o.TX.Operations = append(o.TX.Operations, m.O)
return m.Err
}
// MutateTransaction for AllowTrustBuilder causes the underylying AllowTrustOp
// to be added to the operation list for the provided transaction
func (m AllowTrustBuilder) MutateTransaction(o *TransactionBuilder) error {
if m.Err != nil {
return m.Err
}
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypeAllowTrust, m.AT)
o.TX.Operations = append(o.TX.Operations, m.O)
return m.Err
}
// MutateTransaction for AccountMergeBuilder causes the underylying Destination
// to be added to the operation list for the provided transaction
func (m AccountMergeBuilder) MutateTransaction(o *TransactionBuilder) error {
if m.Err != nil {
return m.Err
}
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypeAccountMerge, m.Destination)
o.TX.Operations = append(o.TX.Operations, m.O)
return m.Err
}
// MutateTransaction for SetOptionsBuilder causes the underylying
// SetOptionsOp to be added to the operation list for the provided
// transaction
func (m SetOptionsBuilder) MutateTransaction(o *TransactionBuilder) error {
if m.Err != nil {
return m.Err
}
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypeSetOptions, m.SO)
o.TX.Operations = append(o.TX.Operations, m.O)
return m.Err
}
// MutateTransaction for ManageDataBuilder causes the underylying
// ManageData to be added to the operation list for the provided
// transaction
func (m ManageDataBuilder) MutateTransaction(o *TransactionBuilder) error {
if m.Err != nil {
return m.Err
}
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypeManageData, m.MD)
o.TX.Operations = append(o.TX.Operations, m.O)
return m.Err
}
// MutateTransaction for CreateAccountBuilder causes the underylying
// CreateAccountOp to be added to the operation list for the provided
// transaction
func (m CreateAccountBuilder) MutateTransaction(o *TransactionBuilder) error {
if m.Err != nil {
return m.Err
}
m.O.Body, m.Err = xdr.NewOperationBody(xdr.OperationTypeCreateAccount, m.CA)
o.TX.Operations = append(o.TX.Operations, m.O)
return m.Err
}
// ExampleLowLevelTransaction creates and signs a simple transaction, and then
// encodes it into a hex string capable of being submitted to stellar-core.
//
// It uses the low-level xdr facilities to create the transaction.
func ExampleLowLevelTransaction() {
skp := keypair.MustParse("SA26PHIKZM6CXDGR472SSGUQQRYXM6S437ZNHZGRM6QA4FOPLLLFRGDX")
dkp := keypair.MustParse("SBQHO2IMYKXAYJFCWGXC7YKLJD2EGDPSK3IUDHVJ6OOTTKLSCK6Z6POM")
asset, err := xdr.NewAsset(xdr.AssetTypeAssetTypeNative, nil)
if err != nil {
panic(err)
}
var destination xdr.AccountId
err = destination.SetAddress(dkp.Address())
if err != nil {
panic(err)
}
op := xdr.PaymentOp{
Destination: destination,
Asset: asset,
Amount: 50 * 10000000,
}
memo, err := xdr.NewMemo(xdr.MemoTypeMemoNone, nil)
var source xdr.AccountId
err = source.SetAddress(skp.Address())
if err != nil {
panic(err)
}
body, err := xdr.NewOperationBody(xdr.OperationTypePayment, op)
if err != nil {
panic(err)
}
tx := xdr.Transaction{
SourceAccount: source,
Fee: 10,
SeqNum: xdr.SequenceNumber(1),
Memo: memo,
Operations: []xdr.Operation{
{Body: body},
},
}
var txBytes bytes.Buffer
_, err = xdr.Marshal(&txBytes, tx)
if err != nil {
panic(err)
}
txHash := hash.Hash(txBytes.Bytes())
signature, err := skp.Sign(txHash[:])
if err != nil {
panic(err)
}
ds := xdr.DecoratedSignature{
Hint: skp.Hint(),
Signature: xdr.Signature(signature[:]),
}
txe := xdr.TransactionEnvelope{
Tx: tx,
Signatures: []xdr.DecoratedSignature{ds},
}
var txeBytes bytes.Buffer
_, err = xdr.Marshal(&txeBytes, txe)
if err != nil {
panic(err)
}
txeB64 := base64.StdEncoding.EncodeToString(txeBytes.Bytes())
fmt.Printf("tx base64: %s", txeB64)
// Output: tx base64: AAAAAAU08yUQ8sHqhY8j9mXWwERfHC/3cKFSe/spAr0rGtO2AAAACgAAAAAAAAABAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAA+fnTe7/v4whpBUx96oj92jfZPz7S00l3O2xeyeqWIA0AAAAAAAAAAB3NZQAAAAAAAAAAASsa07YAAABAieruUIGcQH6RlQ+prYflPFU3nED2NvWhtaC+tgnKsqgiKURK4xo/W7EgH0+I6aQok52awbE+ksOxEQ5MLJ9eAw==
}