[#xx] cli: Add command node services

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

cmd/frostfs-cli/modules/node/root.go

@@ -0,0 +1,32 @@
+package node
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
+	"github.com/spf13/cobra"
+)
+
+// Cmd represents the container command.
+var Cmd = &cobra.Command{
+	Use:   "node",
+	Short: "Operations related to node state",
+	Long:  "Operations related to node state",
+	PersistentPreRun: func(cmd *cobra.Command, args []string) {
+		// bind exactly that cmd's flags to
+		// the viper before execution
+		commonflags.Bind(cmd)
+		commonflags.BindAPI(cmd)
+	},
+}
+
+func init() {
+	nodeChildCommand := []*cobra.Command{
+		nodeServicesCmd,
+	}
+	Cmd.AddCommand(nodeChildCommand...)
+
+	initNodeServicesCmd()
+
+	for _, nodeCommand := range nodeChildCommand {
+		commonflags.InitAPI(nodeCommand)
+	}
+}

cmd/frostfs-cli/modules/node/services.go

@@ -0,0 +1,40 @@
+package node
+
+import (
+	"context"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/tree"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+var nodeServicesCmd = &cobra.Command{
+	Use:   "services",
+	Short: "Show services state for node",
+	Long:  "Show services state for node.",
+	Run: func(cmd *cobra.Command, args []string) {
+		var a network.Address
+		err := a.FromString(viper.GetViper().GetString(commonflags.RPC))
+		common.ExitOnErr(cmd, "unable to parse RPC endpoint", err)
+
+		cc, err := grpc.DialContext(context.Background(), a.URIAddr(), grpc.WithTransportCredentials(insecure.NewCredentials()))
+		common.ExitOnErr(cmd, "unable to create client connection", err)
+
+		treeClient := tree.NewTreeServiceClient(cc)
+		resp, err := treeClient.Healthcheck(context.Background(), new(tree.HealthcheckRequest))
+		status := "available"
+		if err != nil || resp == nil {
+			status = "N/A"
+		}
+		cmd.Printf("tree service status: %s\n", status)
+	},
+}
+
+func initNodeServicesCmd() {
+	commonflags.Init(nodeServicesCmd)
+}

cmd/frostfs-cli/modules/root.go

@@ -12,6 +12,7 @@ import (
 	containerCli "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/container"
 	controlCli "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/control"
 	netmapCli "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/node"
 	objectCli "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/object"
 	sessionCli "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/session"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/modules/tree"
@@ -86,6 +87,7 @@ func init() {
 	rootCmd.AddCommand(containerCli.Cmd)
 	rootCmd.AddCommand(tree.Cmd)
 	rootCmd.AddCommand(gendoc.Command(rootCmd, gendoc.Options{}))
+	rootCmd.AddCommand(node.Cmd)
 }
 
 func entryPoint(cmd *cobra.Command, _ []string) {