enhancement: add sse service skeleton

services/sse/pkg/command/health.go

@@ -0,0 +1,62 @@
+package command
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+
+	"github.com/urfave/cli/v2"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/config/configlog"
+	"github.com/owncloud/ocis/v2/services/sse/pkg/config"
+	"github.com/owncloud/ocis/v2/services/sse/pkg/config/parser"
+)
+
+// Health is the entrypoint for the health command.
+func Health(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:     "health",
+		Usage:    "check health status",
+		Category: "info",
+		Before: func(c *cli.Context) error {
+			return configlog.ReturnError(parser.ParseConfig(cfg))
+		},
+		Action: func(c *cli.Context) error {
+			logger := log.NewLogger(
+				log.Name(cfg.Service.Name),
+				log.Level(cfg.Log.Level),
+				log.Pretty(cfg.Log.Pretty),
+				log.Color(cfg.Log.Color),
+				log.File(cfg.Log.File),
+			)
+
+			resp, err := http.Get(
+				fmt.Sprintf(
+					"http://%s/healthz",
+					cfg.Debug.Addr,
+				),
+			)
+
+			if err != nil {
+				logger.Fatal().
+					Err(err).
+					Msg("Failed to request health check")
+			}
+
+			defer resp.Body.Close()
+
+			if resp.StatusCode != http.StatusOK {
+				logger.Fatal().
+					Int("code", resp.StatusCode).
+					Msg("Health seems to be in bad state")
+			}
+
+			logger.Debug().
+				Int("code", resp.StatusCode).
+				Msg("Health got a good state")
+
+			return nil
+		},
+	}
+}

services/sse/pkg/command/root.go

@@ -0,0 +1,30 @@
+package command
+
+import (
+	"os"
+
+	"github.com/urfave/cli/v2"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/clihelper"
+	"github.com/owncloud/ocis/v2/services/sse/pkg/config"
+)
+
+// GetCommands provides all commands for this service
+func GetCommands(cfg *config.Config) cli.Commands {
+	return []*cli.Command{
+		Server(cfg),
+		Health(cfg),
+		Version(cfg),
+	}
+}
+
+// Execute is the entry point for the sse command.
+func Execute(cfg *config.Config) error {
+	app := clihelper.DefaultApp(&cli.App{
+		Name:     "sse",
+		Usage:    "Serve ownCloud sse for oCIS",
+		Commands: GetCommands(cfg),
+	})
+
+	return app.Run(os.Args)
+}

services/sse/pkg/command/server.go

@@ -0,0 +1,81 @@
+package command
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/oklog/run"
+	"github.com/urfave/cli/v2"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/config/configlog"
+	"github.com/owncloud/ocis/v2/ocis-pkg/handlers"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+	"github.com/owncloud/ocis/v2/ocis-pkg/service/debug"
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+	"github.com/owncloud/ocis/v2/services/sse/pkg/config"
+	"github.com/owncloud/ocis/v2/services/sse/pkg/config/parser"
+	"github.com/owncloud/ocis/v2/services/sse/pkg/service"
+)
+
+// Server is the entrypoint for the server command.
+func Server(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:     "server",
+		Usage:    fmt.Sprintf("start the %s service without runtime (unsupervised mode)", cfg.Service.Name),
+		Category: "server",
+		Before: func(c *cli.Context) error {
+			return configlog.ReturnFatal(parser.ParseConfig(cfg))
+		},
+		Action: func(c *cli.Context) error {
+			var (
+				gr          = run.Group{}
+				ctx, cancel = func() (context.Context, context.CancelFunc) {
+					if cfg.Context == nil {
+						return context.WithCancel(context.Background())
+					}
+					return context.WithCancel(cfg.Context)
+				}()
+				logger = log.NewLogger(
+					log.Name(cfg.Service.Name),
+					log.Level(cfg.Log.Level),
+					log.Pretty(cfg.Log.Pretty),
+					log.Color(cfg.Log.Color),
+					log.File(cfg.Log.File),
+				)
+			)
+			defer cancel()
+
+			{
+				svc, err := service.NewSSE(cfg, logger)
+				if err != nil {
+					return err
+				}
+
+				gr.Add(svc.Run, func(_ error) {
+					cancel()
+				})
+			}
+
+			{
+				server := debug.NewService(
+					debug.Logger(logger),
+					debug.Name(cfg.Service.Name),
+					debug.Version(version.GetString()),
+					debug.Address(cfg.Debug.Addr),
+					debug.Token(cfg.Debug.Token),
+					debug.Pprof(cfg.Debug.Pprof),
+					debug.Zpages(cfg.Debug.Zpages),
+					debug.Health(handlers.Health),
+					debug.Ready(handlers.Ready),
+				)
+
+				gr.Add(server.ListenAndServe, func(_ error) {
+					_ = server.Shutdown(ctx)
+					cancel()
+				})
+			}
+
+			return gr.Run()
+		},
+	}
+}

services/sse/pkg/command/version.go

@@ -0,0 +1,27 @@
+package command
+
+import (
+	"fmt"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+
+	"github.com/urfave/cli/v2"
+
+	"github.com/owncloud/ocis/v2/services/sse/pkg/config"
+)
+
+// Version prints the service versions of all running instances.
+func Version(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:     "version",
+		Usage:    "print the version of this binary and the running service instances",
+		Category: "info",
+		Action: func(c *cli.Context) error {
+			fmt.Println("Version: " + version.GetString())
+			fmt.Printf("Compiled: %s\n", version.Compiled())
+			fmt.Println("")
+
+			return nil
+		},
+	}
+}