rename folder extensions -> services

Signed-off-by: Christian Richter <crichter@owncloud.com>

services/thumbnails/pkg/command/health.go

@@ -0,0 +1,57 @@
+package command
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/config"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/config/parser"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/logging"
+	"github.com/urfave/cli/v2"
+)
+
+// 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 {
+			err := parser.ParseConfig(cfg)
+			if err != nil {
+				fmt.Printf("%v", err)
+			}
+			return err
+		},
+		Action: func(c *cli.Context) error {
+			logger := logging.Configure(cfg.Service.Name, cfg.Log)
+
+			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/thumbnails/pkg/command/root.go

@@ -0,0 +1,64 @@
+package command
+
+import (
+	"context"
+	"os"
+
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/config"
+	"github.com/owncloud/ocis/v2/ocis-pkg/clihelper"
+	ociscfg "github.com/owncloud/ocis/v2/ocis-pkg/config"
+	"github.com/thejerf/suture/v4"
+	"github.com/urfave/cli/v2"
+)
+
+// GetCommands provides all commands for this service
+func GetCommands(cfg *config.Config) cli.Commands {
+	return []*cli.Command{
+		// start this service
+		Server(cfg),
+
+		// interaction with this service
+
+		// infos about this service
+		Health(cfg),
+		Version(cfg),
+	}
+}
+
+// Execute is the entry point for the ocis-thumbnails command.
+func Execute(cfg *config.Config) error {
+	app := clihelper.DefaultApp(&cli.App{
+		Name:     "thumbnails",
+		Usage:    "Example usage",
+		Commands: GetCommands(cfg),
+	})
+
+	cli.HelpFlag = &cli.BoolFlag{
+		Name:  "help,h",
+		Usage: "Show the help",
+	}
+
+	return app.Run(os.Args)
+}
+
+// SutureService allows for the thumbnails command to be embedded and supervised by a suture supervisor tree.
+type SutureService struct {
+	cfg *config.Config
+}
+
+// NewSutureService creates a new thumbnails.SutureService
+func NewSutureService(cfg *ociscfg.Config) suture.Service {
+	cfg.Thumbnails.Commons = cfg.Commons
+	return SutureService{
+		cfg: cfg.Thumbnails,
+	}
+}
+
+func (s SutureService) Serve(ctx context.Context) error {
+	s.cfg.Context = ctx
+	if err := Execute(s.cfg); err != nil {
+		return err
+	}
+
+	return nil
+}

services/thumbnails/pkg/command/server.go

@@ -0,0 +1,112 @@
+package command
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/oklog/run"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/config"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/config/parser"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/logging"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/metrics"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/server/debug"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/server/grpc"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/server/http"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/tracing"
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+	"github.com/urfave/cli/v2"
+)
+
+// Server is the entrypoint for the server command.
+func Server(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:     "server",
+		Usage:    fmt.Sprintf("start %s extension without runtime (unsupervised mode)", cfg.Service.Name),
+		Category: "server",
+		Before: func(c *cli.Context) error {
+			err := parser.ParseConfig(cfg)
+			if err != nil {
+				fmt.Printf("%v", err)
+				os.Exit(1)
+			}
+			return err
+		},
+		Action: func(c *cli.Context) error {
+			logger := logging.Configure(cfg.Service.Name, cfg.Log)
+			err := tracing.Configure(cfg)
+			if err != nil {
+				return err
+			}
+
+			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)
+				}()
+				metrics = metrics.New()
+			)
+
+			defer cancel()
+
+			metrics.BuildInfo.WithLabelValues(version.GetString()).Set(1)
+
+			service := grpc.NewService(
+				grpc.Logger(logger),
+				grpc.Context(ctx),
+				grpc.Config(cfg),
+				grpc.Name(cfg.Service.Name),
+				grpc.Namespace(cfg.GRPC.Namespace),
+				grpc.Address(cfg.GRPC.Addr),
+				grpc.Metrics(metrics),
+			)
+
+			gr.Add(service.Run, func(_ error) {
+				fmt.Println("shutting down grpc server")
+				cancel()
+			})
+
+			server, err := debug.Server(
+				debug.Logger(logger),
+				debug.Config(cfg),
+			)
+
+			if err != nil {
+				logger.Info().Err(err).Str("transport", "debug").Msg("Failed to initialize server")
+				return err
+			}
+
+			gr.Add(server.ListenAndServe, func(_ error) {
+				_ = server.Shutdown(ctx)
+				cancel()
+			})
+
+			httpServer, err := http.Server(
+				http.Logger(logger),
+				http.Context(ctx),
+				http.Config(cfg),
+				http.Metrics(metrics),
+				http.Namespace(cfg.HTTP.Namespace),
+			)
+
+			if err != nil {
+				logger.Info().
+					Err(err).
+					Str("transport", "http").
+					Msg("Failed to initialize server")
+
+				return err
+			}
+
+			gr.Add(httpServer.Run, func(_ error) {
+				logger.Info().Str("server", "http").Msg("shutting down server")
+				cancel()
+			})
+
+			return gr.Run()
+		},
+	}
+}

services/thumbnails/pkg/command/version.go

@@ -0,0 +1,50 @@
+package command
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/registry"
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+
+	tw "github.com/olekukonko/tablewriter"
+	"github.com/owncloud/ocis/v2/extensions/thumbnails/pkg/config"
+	"github.com/urfave/cli/v2"
+)
+
+// 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 extension instances",
+		Category: "info",
+		Action: func(c *cli.Context) error {
+			fmt.Println("Version: " + version.GetString())
+			fmt.Printf("Compiled: %s\n", version.Compiled())
+			fmt.Println("")
+
+			reg := registry.GetRegistry()
+			services, err := reg.GetService(cfg.GRPC.Namespace + "." + cfg.Service.Name)
+			if err != nil {
+				fmt.Println(fmt.Errorf("could not get %s services from the registry: %v", cfg.Service.Name, err))
+				return err
+			}
+
+			if len(services) == 0 {
+				fmt.Println("No running " + cfg.Service.Name + " 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
+		},
+	}
+}