CLI: Add cluster operations and management commands #98

Signed-off-by: Michael Mayer <michael@photoprism.app>

internal/commands/cluster_summary.go

@@ -0,0 +1,56 @@
+package commands
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/urfave/cli/v2"
+
+	"github.com/photoprism/photoprism/internal/config"
+	"github.com/photoprism/photoprism/internal/service/cluster"
+	reg "github.com/photoprism/photoprism/internal/service/cluster/registry"
+	"github.com/photoprism/photoprism/pkg/txt/report"
+)
+
+// ClusterSummaryCommand prints a minimal cluster summary (Portal-only).
+var ClusterSummaryCommand = &cli.Command{
+	Name:   "summary",
+	Usage:  "Shows cluster summary (Portal-only)",
+	Flags:  append(report.CliFlags, JsonFlag),
+	Action: clusterSummaryAction,
+}
+
+func clusterSummaryAction(ctx *cli.Context) error {
+	return CallWithDependencies(ctx, func(conf *config.Config) error {
+		if !conf.IsPortal() {
+			return fmt.Errorf("cluster summary is only available on a Portal node")
+		}
+
+		r, err := reg.NewFileRegistry(conf)
+		if err != nil {
+			return err
+		}
+
+		nodes, _ := r.List()
+
+		resp := cluster.SummaryResponse{
+			PortalUUID: conf.PortalUUID(),
+			Nodes:      len(nodes),
+			DB:         cluster.DBInfo{Driver: conf.DatabaseDriverName(), Host: conf.DatabaseHost(), Port: conf.DatabasePort()},
+			Time:       time.Now().UTC().Format(time.RFC3339),
+		}
+
+		if ctx.Bool("json") {
+			b, _ := json.Marshal(resp)
+			fmt.Println(string(b))
+			return nil
+		}
+
+		cols := []string{"Portal UUID", "Nodes", "DB Driver", "DB Host", "DB Port", "Time"}
+		rows := [][]string{{resp.PortalUUID, fmt.Sprintf("%d", resp.Nodes), resp.DB.Driver, resp.DB.Host, fmt.Sprintf("%d", resp.DB.Port), resp.Time}}
+		out, err := report.RenderFormat(rows, cols, report.CliFormat(ctx))
+		fmt.Printf("\n%s\n", out)
+		return err
+	})
+}