rpcserver: add channels to GetNodeInfo response

lnrpc/rpc.proto

@@ -1735,8 +1735,14 @@ message NodeInfo {
     */
     LightningNode node = 1 [json_name = "node"];
 
+    /// The total number of channels for the node.
     uint32 num_channels = 2 [json_name = "num_channels"];
+
+    /// The sum of all channels capacity for the node, denominated in satoshis.
     int64 total_capacity = 3 [json_name = "total_capacity"];
+
+    /// A list of all public channels for the node.
+    repeated ChannelEdge channels = 4 [json_name = "channels"];
 }
 
 /**

lnrpc/rpc.swagger.json

@@ -2617,11 +2617,20 @@
         },
         "num_channels": {
           "type": "integer",
-          "format": "int64"
+          "format": "int64",
+          "description": "/ The total number of channels for the node."
         },
         "total_capacity": {
           "type": "string",
-          "format": "int64"
+          "format": "int64",
+          "description": "/ The sum of all channels capacity for the node, denominated in satoshis."
+        },
+        "channels": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/lnrpcChannelEdge"
+          },
+          "description": "/ A list of all public channels for the node."
         }
       }
     },

rpcserver.go

@@ -3820,12 +3820,25 @@ func (r *rpcServer) GetNodeInfo(ctx context.Context,
 	var (
 		numChannels   uint32
 		totalCapacity btcutil.Amount
+		channels      []*lnrpc.ChannelEdge
 	)
+
 	if err := node.ForEachChannel(nil, func(_ *bbolt.Tx, edge *channeldb.ChannelEdgeInfo,
-		_, _ *channeldb.ChannelEdgePolicy) error {
+		c1, c2 *channeldb.ChannelEdgePolicy) error {
 
 		numChannels++
 		totalCapacity += edge.Capacity
+
+		// Do not include unannounced channels - private channels or public
+		// channels whose authentication proof were not confirmed yet.
+		if edge.AuthProof == nil {
+			return nil
+		}
+
+		// Convert the database's edge format into the network/RPC edge format.
+		channelEdge := marshalDbEdge(edge, c1, c2)
+		channels = append(channels, channelEdge)
+
 		return nil
 	}); err != nil {
 		return nil, err
@@ -3839,7 +3852,6 @@ func (r *rpcServer) GetNodeInfo(ctx context.Context,
 		}
 		nodeAddrs = append(nodeAddrs, nodeAddr)
 	}
-	// TODO(roasbeef): list channels as well?
 
 	return &lnrpc.NodeInfo{
 		Node: &lnrpc.LightningNode{
@@ -3851,6 +3863,7 @@ func (r *rpcServer) GetNodeInfo(ctx context.Context,
 		},
 		NumChannels:   numChannels,
 		TotalCapacity: int64(totalCapacity),
+		Channels:      channels,
 	}, nil
 }