Add an ocm service exposing the ocm related http and grpc APIs

services/ocm/pkg/command/health.go

@@ -0,0 +1,18 @@
+package command
+
+import (
+	"github.com/owncloud/ocis/v2/services/ocm/pkg/config"
+	"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",
+		Action: func(c *cli.Context) error {
+			// Not implemented
+			return nil
+		},
+	}
+}

services/ocm/pkg/command/root.go

@@ -0,0 +1,34 @@
+package command
+
+import (
+	"os"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/clihelper"
+	"github.com/owncloud/ocis/v2/services/ocm/pkg/config"
+	"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 ocm command.
+func Execute(cfg *config.Config) error {
+	app := clihelper.DefaultApp(&cli.App{
+		Name:     "ocm",
+		Usage:    "starts ocm service",
+		Commands: GetCommands(cfg),
+	})
+
+	return app.Run(os.Args)
+}

services/ocm/pkg/command/server.go

@@ -0,0 +1,110 @@
+package command
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path"
+
+	"github.com/cs3org/reva/v2/cmd/revad/runtime"
+	"github.com/gofrs/uuid"
+	"github.com/oklog/run"
+	"github.com/owncloud/ocis/v2/ocis-pkg/config/configlog"
+	"github.com/owncloud/ocis/v2/ocis-pkg/registry"
+	"github.com/owncloud/ocis/v2/ocis-pkg/sync"
+	"github.com/owncloud/ocis/v2/ocis-pkg/tracing"
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+	"github.com/owncloud/ocis/v2/services/ocm/pkg/config"
+	"github.com/owncloud/ocis/v2/services/ocm/pkg/config/parser"
+	"github.com/owncloud/ocis/v2/services/ocm/pkg/logging"
+	"github.com/owncloud/ocis/v2/services/ocm/pkg/revaconfig"
+	"github.com/owncloud/ocis/v2/services/ocm/pkg/server/debug"
+	"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 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 {
+			logger := logging.Configure(cfg.Service.Name, cfg.Log)
+			traceProvider, err := tracing.GetServiceTraceProvider(cfg.Tracing, cfg.Service.Name)
+			if err != nil {
+				return err
+			}
+			gr := run.Group{}
+			ctx, cancel := defineContext(cfg)
+
+			defer cancel()
+
+			rCfg := revaconfig.OCMConfigFromStruct(cfg, logger)
+
+			gr.Add(func() error {
+				pidFile := path.Join(os.TempDir(), "revad-"+cfg.Service.Name+"-"+uuid.Must(uuid.NewV4()).String()+".pid")
+				reg := registry.GetRegistry()
+
+				runtime.RunWithOptions(rCfg, pidFile,
+					runtime.WithLogger(&logger.Logger),
+					runtime.WithRegistry(reg),
+					runtime.WithTraceProvider(traceProvider),
+				)
+
+				return nil
+			}, func(err error) {
+				logger.Error().
+					Err(err).
+					Str("server", cfg.Service.Name).
+					Msg("Shutting down server")
+
+				cancel()
+				os.Exit(1)
+			})
+
+			debugServer, err := debug.Server(
+				debug.Logger(logger),
+				debug.Context(ctx),
+				debug.Config(cfg),
+			)
+			if err != nil {
+				logger.Info().Err(err).Str("server", "debug").Msg("Failed to initialize server")
+				return err
+			}
+
+			gr.Add(debugServer.ListenAndServe, func(_ error) {
+				cancel()
+			})
+
+			if !cfg.Supervised {
+				sync.Trap(&gr, cancel)
+			}
+
+			grpcSvc := registry.BuildGRPCService(cfg.GRPC.Namespace+"."+cfg.Service.Name, uuid.Must(uuid.NewV4()).String(), cfg.GRPC.Addr, version.GetString())
+			if err := registry.RegisterService(ctx, grpcSvc, logger); err != nil {
+				logger.Fatal().Err(err).Msg("failed to register the grpc service")
+			}
+
+			httpSvc := registry.BuildHTTPService(cfg.HTTP.Namespace+"."+cfg.Service.Name, uuid.Must(uuid.NewV4()).String(), cfg.HTTP.Addr, version.GetString())
+			if err := registry.RegisterService(ctx, httpSvc, logger); err != nil {
+				logger.Fatal().Err(err).Msg("failed to register the http service")
+			}
+
+			return gr.Run()
+		},
+	}
+}
+
+// defineContext sets the context for the service. If there is a context configured it will create a new child from it,
+// if not, it will create a root context that can be cancelled.
+func defineContext(cfg *config.Config) (context.Context, context.CancelFunc) {
+	return func() (context.Context, context.CancelFunc) {
+		if cfg.Context == nil {
+			return context.WithCancel(context.Background())
+		}
+		return context.WithCancel(cfg.Context)
+	}()
+}

services/ocm/pkg/command/version.go

@@ -0,0 +1,19 @@
+package command
+
+import (
+	"github.com/owncloud/ocis/v2/services/ocm/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 service instances",
+		Category: "info",
+		Action: func(c *cli.Context) error {
+			// not implemented
+			return nil
+		},
+	}
+}