Golang OutPoint.String方法代码示例

// AssertChannelExists asserts that an active channel identified by
// channelPoint is known to exist from the point-of-view of node..
func (n *networkHarness) AssertChannelExists(ctx context.Context,
	node *lightningNode, chanPoint *wire.OutPoint) error {

	req := &lnrpc.ListChannelsRequest{}
	resp, err := node.ListChannels(ctx, req)
	if err != nil {
		return fmt.Errorf("unable fetch node's channels: %v", err)
	}

	for _, channel := range resp.Channels {
		if channel.ChannelPoint == chanPoint.String() {
			return nil
		}
	}

	return fmt.Errorf("channel not found")
}

func testMultiHopPayments(net *networkHarness, t *harnessTest) {
	const chanAmt = btcutil.Amount(100000)
	ctxb := context.Background()
	timeout := time.Duration(time.Second * 5)

	// Open a channel with 100k satoshis between Alice and Bob with Alice
	// being the sole funder of the channel.
	ctxt, _ := context.WithTimeout(ctxb, timeout)
	chanPointAlice := openChannelAndAssert(t, net, ctxt, net.Alice,
		net.Bob, chanAmt)

	aliceChanTXID, err := wire.NewShaHash(chanPointAlice.FundingTxid)
	if err != nil {
		t.Fatalf("unable to create sha hash: %v", err)
	}
	aliceFundPoint := wire.OutPoint{
		Hash:  *aliceChanTXID,
		Index: chanPointAlice.OutputIndex,
	}

	// Create a new node (Carol), load her with some funds, then establish
	// a connection between Carol and Alice with a channel that has
	// identical capacity to the one created above.
	//
	// The network topology should now look like: Carol -> Alice -> Bob
	carol, err := net.NewNode(nil)
	if err != nil {
		t.Fatalf("unable to create new nodes: %v", err)
	}
	if err := net.ConnectNodes(ctxb, carol, net.Alice); err != nil {
		t.Fatalf("unable to connect carol to alice: %v", err)
	}
	err = net.SendCoins(ctxb, btcutil.SatoshiPerBitcoin, carol)
	if err != nil {
		t.Fatalf("unable to send coins to carol: %v", err)
	}
	ctxt, _ = context.WithTimeout(ctxb, timeout)
	chanPointCarol := openChannelAndAssert(t, net, ctxt, carol,
		net.Alice, chanAmt)

	carolChanTXID, err := wire.NewShaHash(chanPointCarol.FundingTxid)
	if err != nil {
		t.Fatalf("unable to create sha hash: %v", err)
	}
	carolFundPoint := wire.OutPoint{
		Hash:  *carolChanTXID,
		Index: chanPointCarol.OutputIndex,
	}

	// Create 5 invoices for Bob, which expect a payment from Carol for 1k
	// satoshis with a different preimage each time.
	const numPayments = 5
	const paymentAmt = 1000
	rHashes := make([][]byte, numPayments)
	for i := 0; i < numPayments; i++ {
		preimage := bytes.Repeat([]byte{byte(i)}, 32)
		invoice := &lnrpc.Invoice{
			Memo:      "testing",
			RPreimage: preimage,
			Value:     paymentAmt,
		}
		resp, err := net.Bob.AddInvoice(ctxb, invoice)
		if err != nil {
			t.Fatalf("unable to add invoice: %v", err)
		}

		rHashes[i] = resp.RHash
	}

	// Carol's routing table should show a path from Carol -> Alice -> Bob,
	// with the two channels above recognized as the only links within the
	// network.
	time.Sleep(time.Second)
	req := &lnrpc.ShowRoutingTableRequest{}
	routingResp, err := carol.ShowRoutingTable(ctxb, req)
	if err != nil {
		t.Fatalf("unable to query for carol's routing table: %v", err)
	}
	if len(routingResp.Channels) != 2 {
		t.Fatalf("only two channels should be seen as active in the "+
			"network, instead %v are", len(routingResp.Channels))
	}
	for _, link := range routingResp.Channels {
		switch {
		case link.Outpoint == aliceFundPoint.String():
			switch {
			case link.Id1 == net.Alice.PubKeyStr &&
				link.Id2 == net.Bob.PubKeyStr:
				continue
			case link.Id1 == net.Bob.PubKeyStr &&
				link.Id2 == net.Alice.PubKeyStr:
				continue
			default:
				t.Fatalf("unkown link within routing "+
					"table: %v", spew.Sdump(link))
			}
		case link.Outpoint == carolFundPoint.String():
			switch {
			case link.Id1 == net.Alice.PubKeyStr &&
				link.Id2 == carol.PubKeyStr:
//.........这里部分代码省略.........