Пример #1
0
// 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() {
	spub, spriv, err := GenerateKeyFromSeed("s3Fy8h5LEcYVE8aofthKWHeJpygbntw5HgcekFw93K6XqTW4gEx")

	if err != nil {
		log.Fatal(err)
	}

	dpub, _, err := GenerateKeyFromSeed("sfkPCKA6XgaeHZH3NE57i3QrjVcw61c1noWQCgnHa6KJP2BrbXD")

	if err != nil {
		log.Fatal(err)
	}

	op := xdr.PaymentOp{
		Destination: dpub.KeyData(),
		Currency:    xdr.NewCurrencyCurrencyTypeNative(),
		Amount:      50 * 10000000,
	}

	tx := xdr.Transaction{
		SourceAccount: spub.KeyData(),
		Fee:           10,
		SeqNum:        xdr.SequenceNumber(1),
		Memo:          xdr.NewMemoMemoNone(),
		Operations: []xdr.Operation{
			{Body: xdr.NewOperationBodyPayment(op)},
		},
	}

	var txBytes bytes.Buffer
	_, err = xdr.Marshal(&txBytes, tx)
	if err != nil {
		log.Fatal(err)
	}

	txHash := Hash(txBytes.Bytes())
	signature := spriv.Sign(txHash[:])

	ds := xdr.DecoratedSignature{
		Hint:      spriv.Hint(),
		Signature: xdr.Uint512(signature),
	}

	txe := xdr.TransactionEnvelope{
		Tx:         tx,
		Signatures: []xdr.DecoratedSignature{ds},
	}

	var txeBytes bytes.Buffer
	_, err = xdr.Marshal(&txeBytes, txe)
	if err != nil {
		log.Fatal(err)
	}

	txeHex := hex.EncodeToString(txeBytes.Bytes())

	fmt.Printf("tx hex: %s", txeHex)
	// Output: tx hex: 3658fe7598d20c7a6de3297f84bc52bd2a1ec8c0f1f6c5b41cc1c7571b4331f00000000a000000000000000100000000000000000000000100000000000000012d24692ed08bbf679ba199448870d2191e876fecd92fdd9f6d274da4e6de134100000000000000001dcd650000000001dd302d0c0cee527cf02f6a0aec6916966298712914c63e3c57de74a6e27c29ea234a555fcc36533417afe4e1147815a42529fbca3429bc7caf0a06dc6b383ca6e9d4d80f
}
Пример #2
0
func TestTransactionMutators(t *testing.T) {
	Convey("TransactionBuilder Mutators:", t, func() {
		b := TransactionBuilder{}

		Convey("Defaults works", func() {
			b.Mutate(Defaults{})
			So(b.TX.Fee, ShouldEqual, 10)
			So(b.TX.Memo, ShouldResemble, xdr.NewMemoMemoNone())
		})

		Convey("PaymentBuilder appends its payment to the operation list", func() {
			b.Mutate(Payment())
			So(len(b.TX.Operations), ShouldEqual, 1)
		})

		Convey("SourceAccount sets the transaction's SourceAccount correctly", func() {
			address := "gLtaC2yiJs3r8YE2bTiVfFs9Mi5KdRoLNLUA45HYVy4iNd7S9p"
			aid, _ := stellarbase.AddressToAccountId(address)

			b.Mutate(SourceAccount{address})
			So(b.TX.SourceAccount, ShouldEqual, aid)
			So(b.Err, ShouldBeNil)
		})

		Convey("SourceAccount sets an error for invalid addresses", func() {
			address := "foo"
			b.Mutate(SourceAccount{address})
			So(b.Err, ShouldNotBeNil)
		})

		Convey("Sequence sets the transaction's Sequence correctly", func() {
			b.Mutate(Sequence{1})
			So(b.TX.SeqNum, ShouldEqual, 1)
			b.Mutate(Sequence{12345})
			So(b.TX.SeqNum, ShouldEqual, 12345)
		})
	})
}
Пример #3
0
// MutateTransaction for SourceAccount sets the transaction's SourceAccount
// to the pubilic key for the address provided
func (m Defaults) MutateTransaction(o *xdr.Transaction) error {
	o.Fee = 10
	o.Memo = xdr.NewMemoMemoNone()
	return nil
}