lncli: add queryicm

`queryicm` queries the internal state of the imputed cost manager.

Author: feelancer21

cmd/commands/cmd_imputed_cost.go

@@ -0,0 +1,47 @@
+package commands
+
+import (
+	"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
+	"github.com/urfave/cli"
+)
+
+var queryImputedCostManagerCommand = cli.Command{
+	Name:     "queryicm",
+	Category: "Imputed Costs", // TODO: subcommand for imputed costs?
+	Usage:    "Query the internal state of the imputed cost manager.",
+	Description: `
+        Query the internal state of the imputed cost manager.
+	`,
+	Flags: []cli.Flag{
+		cli.StringSliceFlag{
+			Name: "namespace",
+			Usage: "(optional) name of the namespace. This flag " +
+				"can be specified multiple times in the same " +
+				"command.",
+		},
+	},
+	Action: actionDecorator(queryImputedCostManager),
+}
+
+func queryImputedCostManager(ctx *cli.Context) error {
+	ctxc := getContext()
+	conn := getClientConn(ctx, false)
+	defer conn.Close()
+
+	client := routerrpc.NewRouterClient(conn)
+
+	req := &routerrpc.QueryImputedCostsRequest{}
+	namespaces := ctx.StringSlice("namespace")
+	if len(namespaces) > 0 {
+		req.Namespaces = namespaces
+	}
+
+	snapshot, err := client.XQueryImputedCosts(ctxc, req)
+	if err != nil {
+		return err
+	}
+
+	printRespJSON(snapshot)
+
+	return nil
+}

cmd/commands/routerrpc.go

@@ -14,5 +14,6 @@ func routerCommands() []cli.Command {
 		getCfgCommand,
 		setCfgCommand,
 		updateChanStatusCommand,
+		queryImputedCostManagerCommand,
 	}
 }