Merge pull request #585 from wilmerpaulino/openchannel-connect

lncli: add 'connect' flag to openchannel command
This commit is contained in:
Olaoluwa Osuntokun 2018-02-18 15:29:38 -08:00 committed by GitHub
commit 8329a31fb0
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@ -374,18 +374,22 @@ func disconnectPeer(ctx *cli.Context) error {
// TODO(roasbeef): change default number of confirmations // TODO(roasbeef): change default number of confirmations
var openChannelCommand = cli.Command{ var openChannelCommand = cli.Command{
Name: "openchannel", Name: "openchannel",
Usage: "Open a channel to an existing peer.", Usage: "Open a channel to a node or an existing peer.",
Description: ` Description: `
Attempt to open a new channel to an existing peer with the key node-key Attempt to open a new channel to an existing peer with the key node-key
optionally blocking until the channel is 'open'. optionally blocking until the channel is 'open'.
One can also connect to a node before opening a new channel to it by
setting its host:port via the --connect argument. For this to work,
the node_key must be provided, rather than the peer_id. This is optional.
The channel will be initialized with local-amt satoshis local and push-amt The channel will be initialized with local-amt satoshis local and push-amt
satoshis for the remote node. Once the channel is open, a channelPoint (txid:vout) satoshis for the remote node. Once the channel is open, a channelPoint (txid:vout)
of the funding output is returned. of the funding output is returned.
One can manually set the fee to be used for the funding transaction via either One can manually set the fee to be used for the funding transaction via either
the --conf_target or --sat_per_byte arguments. This is optional. the --conf_target or --sat_per_byte arguments. This is optional.
NOTE: peer_id and node_key are mutually exclusive, only one should be used, not both.`, NOTE: peer_id and node_key are mutually exclusive, only one should be used, not both.`,
ArgsUsage: "node-key local-amt push-amt", ArgsUsage: "node-key local-amt push-amt",
Flags: []cli.Flag{ Flags: []cli.Flag{
@ -395,9 +399,13 @@ var openChannelCommand = cli.Command{
}, },
cli.StringFlag{ cli.StringFlag{
Name: "node_key", Name: "node_key",
Usage: "the identity public key of the target peer " + Usage: "the identity public key of the target node/peer " +
"serialized in compressed format", "serialized in compressed format",
}, },
cli.StringFlag{
Name: "connect",
Usage: "(optional) the host:port of the target node",
},
cli.IntFlag{ cli.IntFlag{
Name: "local_amt", Name: "local_amt",
Usage: "the number of satoshis the wallet should commit to the channel", Usage: "the number of satoshis the wallet should commit to the channel",
@ -475,6 +483,7 @@ func openChannel(ctx *cli.Context) error {
return fmt.Errorf("unable to decode node public key: %v", err) return fmt.Errorf("unable to decode node public key: %v", err)
} }
req.NodePubkey = nodePubHex req.NodePubkey = nodePubHex
case args.Present(): case args.Present():
nodePubHex, err := hex.DecodeString(args.First()) nodePubHex, err := hex.DecodeString(args.First())
if err != nil { if err != nil {
@ -486,6 +495,29 @@ func openChannel(ctx *cli.Context) error {
return fmt.Errorf("node id argument missing") return fmt.Errorf("node id argument missing")
} }
// As soon as we can confirm that the node's node_key was set, rather
// than the peer_id, we can check if the host:port was also set to
// connect to it before opening the channel.
if req.NodePubkey != nil && ctx.IsSet("connect") {
addr := &lnrpc.LightningAddress{
Pubkey: hex.EncodeToString(req.NodePubkey),
Host: ctx.String("connect"),
}
req := &lnrpc.ConnectPeerRequest{
Addr: addr,
Perm: false,
}
// Check if connecting to the node was successful.
// We discard the peer id returned as it is not needed.
_, err := client.ConnectPeer(ctxb, req)
if err != nil &&
!strings.Contains(err.Error(), "already connected") {
return err
}
}
switch { switch {
case ctx.IsSet("local_amt"): case ctx.IsSet("local_amt"):
req.LocalFundingAmount = int64(ctx.Int("local_amt")) req.LocalFundingAmount = int64(ctx.Int("local_amt"))