grpc: add shutdown call for external management (#957)

* grpc: add shutdown call for external management

* go mod: tidy

* glorious: suggestion

* Update engine/engine.go

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

* Update engine/rpcserver.go

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

* Update main.go

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

* Update engine/rpcserver.go

Co-authored-by: Scott <gloriousCode@users.noreply.github.com>

Co-authored-by: Ryan O'Hara-Reid <ryan.oharareid@thrasher.io>
Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>
Co-authored-by: Scott <gloriousCode@users.noreply.github.com>

cmd/gctcli/commands.go

@@ -5037,3 +5037,26 @@ func getCollateral(c *cli.Context) error {
 	jsonOutput(result)
 	return nil
 }
+
+var shutdownCommand = &cli.Command{
+	Name:   "shutdown",
+	Usage:  "shuts down bot instance",
+	Action: shutdown,
+}
+
+func shutdown(c *cli.Context) error {
+	conn, cancel, err := setupClient(c)
+	if err != nil {
+		return err
+	}
+	defer closeConn(conn, cancel)
+
+	client := gctrpc.NewGoCryptoTraderServiceClient(conn)
+	result, err := client.Shutdown(c.Context, &gctrpc.ShutdownRequest{})
+	if err != nil {
+		return err
+	}
+
+	jsonOutput(result)
+	return nil
+}

cmd/gctcli/main.go

@@ -202,6 +202,7 @@ func main() {
 		currencyStateManagementCommand,
 		getFuturesPositionsCommand,
 		getCollateralCommand,
+		shutdownCommand,
 	}
 
 	ctx, cancel := context.WithCancel(context.Background())