add missing commands and unify service / namespace options

graph-explorer/pkg/command/root.go

@@ -26,7 +26,7 @@ func Execute(cfg *config.Config) error {
 			},
 		},
 		Before: func(c *cli.Context) error {
-			cfg.Server.Version = version.String
+			cfg.Service.Version = version.String
 			return ParseConfig(c, cfg)
 		},
 		Commands: []*cli.Command{

graph-explorer/pkg/command/server.go

@@ -42,7 +42,7 @@ func Server(cfg *config.Config) *cli.Command {
 
 			defer cancel()
 
-			mtrcs.BuildInfo.WithLabelValues(cfg.Server.Version).Set(1)
+			mtrcs.BuildInfo.WithLabelValues(cfg.Service.Version).Set(1)
 
 			{
 				server, err := http.Server(

graph-explorer/pkg/command/version.go

@@ -0,0 +1,47 @@
+package command
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/owncloud/ocis/ocis-pkg/registry"
+
+	tw "github.com/olekukonko/tablewriter"
+	"github.com/owncloud/ocis/graph-explorer/pkg/config"
+	"github.com/urfave/cli/v2"
+)
+
+// PrintVersion prints the service versions of all running instances.
+func PrintVersion(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:  "version",
+		Usage: "Print the versions of the running instances",
+		Before: func(c *cli.Context) error {
+			return ParseConfig(c, cfg)
+		},
+		Action: func(c *cli.Context) error {
+			reg := registry.GetRegistry()
+			services, err := reg.GetService(cfg.HTTP.Namespace + "." + cfg.Service.Name)
+			if err != nil {
+				fmt.Println(fmt.Errorf("could not get graph services from the registry: %v", err))
+				return err
+			}
+
+			if len(services) == 0 {
+				fmt.Println("No running graph service found.")
+				return nil
+			}
+
+			table := tw.NewWriter(os.Stdout)
+			table.SetHeader([]string{"Version", "Address", "Id"})
+			table.SetAutoFormatHeaders(false)
+			for _, s := range services {
+				for _, n := range s.Nodes {
+					table.Append([]string{s.Version, n.Address, n.Id})
+				}
+			}
+			table.Render()
+			return nil
+		},
+	}
+}