lnrpc: Add UpdateNodeAnnouncement endpoint

.golangci.yml

@@ -17,6 +17,7 @@ run:
     - chainrpc
     - dev
     - invoicesrpc
+    - peersrpc
     - signrpc
     - walletrpc
     - watchtowerrpc

cmd/lncli/main.go

@@ -400,6 +400,7 @@ func main() {
 	app.Commands = append(app.Commands, watchtowerCommands()...)
 	app.Commands = append(app.Commands, wtclientCommands()...)
 	app.Commands = append(app.Commands, devCommands()...)
+	app.Commands = append(app.Commands, peersCommands()...)
 
 	if err := app.Run(os.Args); err != nil {
 		fatal(err)

cmd/lncli/peersrpc_active.go

@@ -0,0 +1,162 @@
+//go:build peersrpc
+// +build peersrpc
+
+package main
+
+import (
+	"fmt"
+
+	"github.com/lightningnetwork/lnd/lnrpc"
+	"github.com/lightningnetwork/lnd/lnrpc/peersrpc"
+	"github.com/urfave/cli"
+)
+
+// peersCommands will return the set of commands to enable for peersrpc
+// builds.
+func peersCommands() []cli.Command {
+	return []cli.Command{
+		{
+			Name:     "peers",
+			Category: "Peers",
+			Usage: "Interacts with the other nodes of the " +
+				"newtwork",
+			Subcommands: []cli.Command{
+				updateNodeAnnouncementCommand,
+			},
+		},
+	}
+}
+
+func getPeersClient(ctx *cli.Context) (peersrpc.PeersClient, func()) {
+	conn := getClientConn(ctx, false)
+	cleanUp := func() {
+		conn.Close()
+	}
+	return peersrpc.NewPeersClient(conn), cleanUp
+}
+
+var updateNodeAnnouncementCommand = cli.Command{
+	Name:     "updatenodeannouncement",
+	Category: "Peers",
+	Usage:    "update and brodcast a new node announcement",
+	Description: `
+	Update the node's information and broadcast a new node announcement.
+
+	Add or remove addresses where your node can be reached at, change the
+	alias/color of the node or enable/disable supported feature bits without
+	restarting the node. A node announcement with the new information will
+	be created and brodcasted to the network.`,
+	ArgsUsage: "[--address_add=] [--address_remove=] [--alias=] " +
+		"[--color=] [--feature_bit_add=] [--feature_bit_remove=]",
+	Flags: []cli.Flag{
+		cli.StringSliceFlag{
+			Name: "address_add",
+			Usage: "a new address that should be added to the " +
+				"set of URIs of this node. Can be set " +
+				"multiple times in the same command",
+		},
+		cli.StringSliceFlag{
+			Name: "address_remove",
+			Usage: "an address that needs to be removed from the " +
+				"set of URIs of this node. Can be set " +
+				"multiple times in the same command",
+		},
+		cli.StringFlag{
+			Name:  "alias",
+			Usage: "the new alias for this node, e.g. \"bob\"",
+		},
+		cli.StringFlag{
+			Name:  "color",
+			Usage: "the new color for this node, e.g. #c42a81",
+		},
+		cli.Int64SliceFlag{
+			Name: "feature_bit_add",
+			Usage: "a feature bit index that needs to be enabled. " +
+				"Can be set multiple times in the same command",
+		},
+		cli.Int64SliceFlag{
+			Name: "feature_bit_remove",
+			Usage: "a feature bit that needs to be disabled" +
+				"Can be set multiple times in the same command",
+		},
+	},
+	Action: actionDecorator(updateNodeAnnouncement),
+}
+
+func updateNodeAnnouncement(ctx *cli.Context) error {
+	ctxc := getContext()
+	client, cleanUp := getPeersClient(ctx)
+	defer cleanUp()
+
+	change := false
+
+	req := &peersrpc.NodeAnnouncementUpdateRequest{}
+
+	if ctx.IsSet("address_add") {
+		change = true
+		for _, addr := range ctx.StringSlice("address_add") {
+			action := &peersrpc.UpdateAddressAction{
+				Action:  peersrpc.UpdateAction_ADD,
+				Address: addr,
+			}
+			req.AddressUpdates = append(req.AddressUpdates, action)
+		}
+	}
+
+	if ctx.IsSet("address_remove") {
+		change = true
+		for _, addr := range ctx.StringSlice("address_remove") {
+			action := &peersrpc.UpdateAddressAction{
+				Action:  peersrpc.UpdateAction_REMOVE,
+				Address: addr,
+			}
+			req.AddressUpdates = append(req.AddressUpdates, action)
+		}
+	}
+
+	if ctx.IsSet("alias") {
+		change = true
+		req.Alias = ctx.String("alias")
+	}
+
+	if ctx.IsSet("color") {
+		change = true
+		req.Color = ctx.String("color")
+	}
+
+	if ctx.IsSet("feature_bit_add") {
+		change = true
+		for _, feature := range ctx.IntSlice("feature_bit_add") {
+			action := &peersrpc.UpdateFeatureAction{
+				Action:     peersrpc.UpdateAction_ADD,
+				FeatureBit: lnrpc.FeatureBit(feature),
+			}
+			req.FeatureUpdates = append(req.FeatureUpdates, action)
+		}
+	}
+
+	if ctx.IsSet("feature_bit_remove") {
+		change = true
+		for _, feature := range ctx.IntSlice("feature_bit_remove") {
+			action := &peersrpc.UpdateFeatureAction{
+				Action:     peersrpc.UpdateAction_REMOVE,
+				FeatureBit: lnrpc.FeatureBit(feature),
+			}
+			req.FeatureUpdates = append(req.FeatureUpdates, action)
+		}
+	}
+
+	if !change {
+		return fmt.Errorf("no changes for the node information " +
+			"detected")
+	}
+
+	resp, err := client.UpdateNodeAnnouncement(ctxc, req)
+	if err != nil {
+		return err
+	}
+
+	printRespJSON(resp)
+
+	return nil
+}

cmd/lncli/peersrpc_default.go

@@ -0,0 +1,11 @@
+//go:build !peersrpc
+// +build !peersrpc
+
+package main
+
+import "github.com/urfave/cli"
+
+// peersCommands will return nil for non-peersrpc builds.
+func peersCommands() []cli.Command {
+	return nil
+}

config.go

@@ -35,6 +35,7 @@ import (
 	"github.com/lightningnetwork/lnd/input"
 	"github.com/lightningnetwork/lnd/lncfg"
 	"github.com/lightningnetwork/lnd/lnrpc"
+	"github.com/lightningnetwork/lnd/lnrpc/peersrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/signrpc"
 	"github.com/lightningnetwork/lnd/lnwallet"
@@ -516,6 +517,7 @@ func DefaultConfig() Config {
 		SubRPCServers: &subRPCServerConfigs{
 			SignRPC:   &signrpc.Config{},
 			RouterRPC: routerrpc.DefaultConfig(),
+			PeersRPC:  &peersrpc.Config{},
 		},
 		Autopilot: &lncfg.AutoPilot{
 			MaxChannels:    5,

dev.Dockerfile

@@ -22,7 +22,7 @@ COPY . /go/src/github.com/lightningnetwork/lnd
 
 RUN cd /go/src/github.com/lightningnetwork/lnd \
 &&  make \
-&&  make install tags="signrpc walletrpc chainrpc invoicesrpc"
+&&  make install tags="signrpc walletrpc chainrpc invoicesrpc peersrpc"
 
 # Start a new, final image to reduce size.
 FROM alpine as final

docs/release-notes/release-notes-0.15.0.md

@@ -27,6 +27,9 @@ then watch it on chain. Taproot script spends are also supported through the
 
 * [Update description for `state` command](https://github.com/lightningnetwork/lnd/pull/6237).
 
+* Add [update node announcement](https://github.com/lightningnetwork/lnd/pull/5587)
+  for updating and propagating node information.
+
 ## Bug Fixes
 
 * [Pipelining an UpdateFulfillHTLC message now only happens when the related UpdateAddHTLC is locked-in.](https://github.com/lightningnetwork/lnd/pull/6246)
@@ -173,6 +176,8 @@ then watch it on chain. Taproot script spends are also supported through the
 
 * [Improve validation of a PSBT packet when handling a request to finalize it.](https://github.com/lightningnetwork/lnd/pull/6217)
 
+* [Add new Peers subserver](https://github.com/lightningnetwork/lnd/pull/5587) with a new endpoint for updating the `NodeAnnouncement` data without having to restart the node.
+
 ## Documentation
 
 * Improved instructions on [how to build lnd for mobile](https://github.com/lightningnetwork/lnd/pull/6085).

feature/manager.go

@@ -141,6 +141,11 @@ func (m *Manager) GetRaw(set Set) *lnwire.RawFeatureVector {
 	return lnwire.NewRawFeatureVector()
 }
 
+// SetRaw sets a new raw feature vector for the given set.
+func (m *Manager) SetRaw(set Set, raw *lnwire.RawFeatureVector) {
+	m.fsets[set] = raw
+}
+
 // Get returns a feature vector for the passed set. If no set is known, an empty
 // feature vector is returned.
 func (m *Manager) Get(set Set) *lnwire.FeatureVector {

lnrpc/autopilotrpc/log.go

@@ -5,7 +5,7 @@ import (
 	"github.com/lightningnetwork/lnd/build"
 )
 
-// log is a logger that is initialized with no output filters.  This means the
+// log is a logger that is initialized with no output filters. This means the
 // package will not perform any logging by default until the caller requests
 // it.
 var log btclog.Logger
@@ -21,25 +21,9 @@ func DisableLog() {
 	UseLogger(btclog.Disabled)
 }
 
-// UseLogger uses a specified Logger to output package logging info.  This
+// UseLogger uses a specified Logger to output package logging info. This
 // should be used in preference to SetLogWriter if the caller is also using
 // btclog.
 func UseLogger(logger btclog.Logger) {
 	log = logger
 }
-
-// logClosure is used to provide a closure over expensive logging operations so
-// don't have to be performed when the logging level doesn't warrant it.
-type logClosure func() string // nolint:unused
-
-// String invokes the underlying function and returns the result.
-func (c logClosure) String() string {
-	return c()
-}
-
-// newLogClosure returns a new closure over a function that returns a string
-// which itself provides a Stringer interface so that it can be used with the
-// logging system.
-func newLogClosure(c func() string) logClosure { // nolint:unused
-	return logClosure(c)
-}

lnrpc/chainrpc/log.go

@@ -5,7 +5,7 @@ import (
 	"github.com/lightningnetwork/lnd/build"
 )
 
-// log is a logger that is initialized with no output filters.  This
+// log is a logger that is initialized with no output filters. This
 // means the package will not perform any logging by default until the caller
 // requests it.
 var log btclog.Logger
@@ -27,19 +27,3 @@ func DisableLog() {
 func UseLogger(logger btclog.Logger) {
 	log = logger
 }
-
-// logClosure is used to provide a closure over expensive logging operations so
-// don't have to be performed when the logging level doesn't warrant it.
-type logClosure func() string // nolint:unused
-
-// String invokes the underlying function and returns the result.
-func (c logClosure) String() string {
-	return c()
-}
-
-// newLogClosure returns a new closure over a function that returns a string
-// which itself provides a Stringer interface so that it can be used with the
-// logging system.
-func newLogClosure(c func() string) logClosure { // nolint:unused
-	return logClosure(c)
-}

lnrpc/gen_protos.sh

@@ -48,7 +48,7 @@ function generate() {
     --custom_opt="$opts" \
     lightning.proto stateservice.proto walletunlocker.proto
 
-  PACKAGES="autopilotrpc chainrpc invoicesrpc routerrpc signrpc verrpc walletrpc watchtowerrpc wtclientrpc devrpc"
+  PACKAGES="autopilotrpc chainrpc invoicesrpc peersrpc routerrpc signrpc verrpc walletrpc watchtowerrpc wtclientrpc devrpc"
   for package in $PACKAGES; do
     # Special import for the wallet kit.
     manual_import=""

lnrpc/invoicesrpc/log.go

@@ -5,7 +5,7 @@ import (
 	"github.com/lightningnetwork/lnd/build"
 )
 
-// log is a logger that is initialized with no output filters.  This means the
+// log is a logger that is initialized with no output filters. This means the
 // package will not perform any logging by default until the caller requests
 // it.
 var log btclog.Logger
@@ -21,7 +21,7 @@ func DisableLog() {
 	UseLogger(btclog.Disabled)
 }
 
-// UseLogger uses a specified Logger to output package logging info.  This
+// UseLogger uses a specified Logger to output package logging info. This
 // should be used in preference to SetLogWriter if the caller is also using
 // btclog.
 func UseLogger(logger btclog.Logger) {

lnrpc/peersrpc/config_active.go

@@ -0,0 +1,29 @@
+//go:build peersrpc
+// +build peersrpc
+
+package peersrpc
+
+import (
+	"net"
+
+	"github.com/lightningnetwork/lnd/lnwire"
+	"github.com/lightningnetwork/lnd/netann"
+)
+
+// Config is the primary configuration struct for the peers RPC subserver.
+// It contains all the items required for the server to carry out its duties.
+// The fields with struct tags are meant to be parsed as normal configuration
+// options, while if able to be populated, the latter fields MUST also be
+// specified.
+type Config struct {
+	// GetNodeAnnouncement is used to send our retrieve the current
+	// node announcement information.
+	GetNodeAnnouncement func() (lnwire.NodeAnnouncement, error)
+
+	// ParseAddr parses an address from its string format to a net.Addr.
+	ParseAddr func(addr string) (net.Addr, error)
+
+	// UpdateNodeAnnouncement updates our node announcement applying the
+	// given NodeAnnModifiers and broadcasts the new version to the network.
+	UpdateNodeAnnouncement func(...netann.NodeAnnModifier) error
+}

lnrpc/peersrpc/config_default.go

@@ -0,0 +1,7 @@
+//go:build !peersrpc
+// +build !peersrpc
+
+package peersrpc
+
+// Config is empty for non-peersrpc builds.
+type Config struct{}