feat: add balance flag to CLI (#38)

README.md

@@ -21,7 +21,7 @@ If you do not, or have already run the above, run:
 
 In order to find the peer id of a running node, execute the following command from the `node/` folder:
 
-    GOEXPERIMENT=arenas go run ./... --peer-id
+    GOEXPERIMENT=arenas go run ./... -peer-id
 
 The peer id will be printed to stdout.
 
@@ -36,6 +36,16 @@ Please note: this interface, while read-only, is unauthenticated and not rate-
 limited. It is recommended that you only enable if you are properly controlling
 access via firewall or only query via localhost.
 
+## Token Balance
+
+In order to query the token balance of a running node, execute the following command from the `node/` folder:
+
+    GOEXPERIMENT=arenas go run ./... -balance
+
+The confirmed token balance will be printed to stdout in QUILs.
+
+Note that this feature requires that [gRPC support](#experimental--grpcrest-support) is enabled.
+
 ## Purpose
 
 The ceremony application provides a secure reference string (SRS) from which

node/app/db_console.go

@@ -110,16 +110,11 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	if m.conn.GetState() == connectivity.Ready {
 		if m.lastChecked < (time.Now().UnixMilli() - 10_000) {
 			m.lastChecked = time.Now().UnixMilli()
-			info, err := m.client.GetTokenInfo(
-				context.Background(),
-				&protobufs.GetTokenInfoRequest{},
-			)
+
+			tokenBalance, err := FetchTokenBalance(m.client)
 			if err == nil {
-				conversionFactor, _ := new(big.Int).SetString("1DCD65000", 16)
-				m.owned = new(big.Int).SetBytes(info.OwnedTokens)
-				m.owned.Div(m.owned, conversionFactor)
-				m.unconfirmedOwned = new(big.Int).SetBytes(info.UnconfirmedOwnedTokens)
-				m.unconfirmedOwned.Div(m.unconfirmedOwned, conversionFactor)
+				m.owned = tokenBalance.Owned
+				m.unconfirmedOwned = tokenBalance.UnconfirmedOwned
 			}
 		}
 	}
@@ -781,12 +776,13 @@ func consoleModel(
 	}
 }
 
-// Runs the DB console
-func (c *DBConsole) Run() {
-	grpcWarn := true
-	addr := "localhost:8337"
-	if c.nodeConfig.ListenGRPCMultiaddr != "" {
-		ma, err := multiaddr.NewMultiaddr(c.nodeConfig.ListenGRPCMultiaddr)
+var defaultGrpcAddress = "localhost:8337"
+
+// Connect to the node via GRPC
+func ConnectToNode(nodeConfig *config.Config) (*grpc.ClientConn, error) {
+	addr := defaultGrpcAddress
+	if nodeConfig.ListenGRPCMultiaddr != "" {
+		ma, err := multiaddr.NewMultiaddr(nodeConfig.ListenGRPCMultiaddr)
 		if err != nil {
 			panic(err)
 		}
@@ -795,10 +791,9 @@ func (c *DBConsole) Run() {
 		if err != nil {
 			panic(err)
 		}
-		grpcWarn = false
 	}
 
-	conn, err := grpc.Dial(
+	return grpc.Dial(
 		addr,
 		grpc.WithTransportCredentials(
 			insecure.NewCredentials(),
@@ -808,11 +803,46 @@ func (c *DBConsole) Run() {
 			grpc.MaxCallRecvMsgSize(600*1024*1024),
 		),
 	)
+}
+
+type TokenBalance struct {
+	Owned            *big.Int
+	UnconfirmedOwned *big.Int
+}
+
+func FetchTokenBalance(client protobufs.NodeServiceClient) (TokenBalance, error) {
+	info, err := client.GetTokenInfo(
+		context.Background(),
+		&protobufs.GetTokenInfoRequest{},
+	)
+	if err != nil {
+		return TokenBalance{}, errors.Wrap(err, "error getting token info")
+	}
+
+	conversionFactor, _ := new(big.Int).SetString("1DCD65000", 16)
+
+	owned := new(big.Int).SetBytes(info.OwnedTokens)
+	owned.Div(owned, conversionFactor)
+
+	unconfirmedOwned := new(big.Int).SetBytes(info.UnconfirmedOwnedTokens)
+	unconfirmedOwned.Div(unconfirmedOwned, conversionFactor)
+
+	return TokenBalance{
+		Owned:            owned,
+		UnconfirmedOwned: unconfirmedOwned,
+	}, nil
+}
+
+// Runs the DB console
+func (c *DBConsole) Run() {
+	conn, err := ConnectToNode(c.nodeConfig)
 	if err != nil {
 		panic(err)
 	}
-
 	defer conn.Close()
+
+	grpcWarn := c.nodeConfig.ListenGRPCMultiaddr == ""
+
 	p := tea.NewProgram(consoleModel(conn, c.nodeConfig, grpcWarn))
 	if _, err := p.Run(); err != nil {
 		panic(err)

node/main.go

@@ -10,6 +10,7 @@ import (
 	"os"
 	"os/signal"
 	"path/filepath"
+	"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
 	"syscall"
 
 	"github.com/libp2p/go-libp2p/core/crypto"
@@ -28,17 +29,21 @@ var (
 		filepath.Join(".", ".config"),
 		"the configuration directory",
 	)
-	importPrivKey = flag.String(
-		"import-priv-key",
-		"",
-		"creates a new config using a specific key from the phase one ceremony",
+	balance = flag.Bool(
+		"balance",
+		false,
+		"print the node's confirmed token balance to stdout and exit",
 	)
 	dbConsole = flag.Bool(
 		"db-console",
 		false,
 		"starts the node in database console mode",
 	)
-
+	importPrivKey = flag.String(
+		"import-priv-key",
+		"",
+		"creates a new config using a specific key from the phase one ceremony",
+	)
 	peerId = flag.Bool(
 		"peer-id",
 		false,
@@ -49,6 +54,35 @@ var (
 func main() {
 	flag.Parse()
 
+	if *balance {
+		config, err := config.LoadConfig(*configDirectory, "")
+		if err != nil {
+			panic(err)
+		}
+
+		if config.ListenGRPCMultiaddr == "" {
+			_, _ = fmt.Fprintf(os.Stderr, "gRPC Not Enabled, Please Configure\n")
+			os.Exit(1)
+		}
+
+		conn, err := app.ConnectToNode(config)
+		if err != nil {
+			panic(err)
+		}
+		defer conn.Close()
+
+		client := protobufs.NewNodeServiceClient(conn)
+
+		balance, err := app.FetchTokenBalance(client)
+		if err != nil {
+			panic(err)
+		}
+
+		fmt.Println("Confirmed balance:", balance.Owned, "QUIL")
+
+		return
+	}
+
 	if *peerId {
 		config, err := config.LoadConfig(*configDirectory, "")
 		if err != nil {