add postprocessing service

Signed-off-by: jkoberg <jkoberg@owncloud.com>

services/postprocessing/pkg/command/health.go

@@ -0,0 +1,18 @@
+package command
+
+import (
+	"github.com/owncloud/ocis/v2/services/postprocessing/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/postprocessing/pkg/command/root.go

@@ -0,0 +1,56 @@
+package command
+
+import (
+	"context"
+	"os"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/clihelper"
+	ociscfg "github.com/owncloud/ocis/v2/ocis-pkg/config"
+	"github.com/owncloud/ocis/v2/services/postprocessing/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 postprocessing command.
+func Execute(cfg *config.Config) error {
+	app := clihelper.DefaultApp(&cli.App{
+		Name:     "postprocessing",
+		Usage:    "starts postprocessing service",
+		Commands: GetCommands(cfg),
+	})
+
+	return app.Run(os.Args)
+}
+
+// SutureService allows for the postprocessing command to be embedded and supervised by a suture supervisor tree.
+type SutureService struct {
+	cfg *config.Config
+}
+
+// NewSutureService creates a new postprocessing.SutureService
+func NewSutureService(cfg *ociscfg.Config) suture.Service {
+	cfg.Postprocessing.Commons = cfg.Commons
+	return SutureService{
+		cfg: cfg.Postprocessing,
+	}
+}
+
+// Serve to implement Server interface
+func (s SutureService) Serve(ctx context.Context) error {
+	s.cfg.Context = ctx
+	return Execute(s.cfg)
+}

services/postprocessing/pkg/command/server.go

@@ -0,0 +1,71 @@
+package command
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"fmt"
+	"os"
+
+	"github.com/cs3org/reva/v2/pkg/events/server"
+	"github.com/go-micro/plugins/v4/events/natsjs"
+	ociscrypto "github.com/owncloud/ocis/v2/ocis-pkg/crypto"
+	"github.com/owncloud/ocis/v2/services/postprocessing/pkg/config"
+	"github.com/owncloud/ocis/v2/services/postprocessing/pkg/config/parser"
+	"github.com/owncloud/ocis/v2/services/postprocessing/pkg/logging"
+	"github.com/owncloud/ocis/v2/services/postprocessing/pkg/service"
+	"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 service 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)
+
+			evtsCfg := cfg.Postprocessing.Events
+			var rootCAPool *x509.CertPool
+			if evtsCfg.TLSRootCACertificate != "" {
+				rootCrtFile, err := os.Open(evtsCfg.TLSRootCACertificate)
+				if err != nil {
+					return err
+				}
+
+				rootCAPool, err = ociscrypto.NewCertPoolFromPEM(rootCrtFile)
+				if err != nil {
+					return err
+				}
+				evtsCfg.TLSInsecure = false
+			}
+
+			tlsConf := &tls.Config{
+				InsecureSkipVerify: evtsCfg.TLSInsecure, //nolint:gosec
+				RootCAs:            rootCAPool,
+			}
+			bus, err := server.NewNatsStream(
+				natsjs.TLSConfig(tlsConf),
+				natsjs.Address(evtsCfg.Endpoint),
+				natsjs.ClusterID(evtsCfg.Cluster),
+			)
+			if err != nil {
+				return err
+			}
+
+			svc, err := service.NewPostprocessingService(bus, logger, cfg.Postprocessing)
+			if err != nil {
+				return err
+			}
+			return svc.Run()
+		},
+	}
+}

services/postprocessing/pkg/command/version.go

@@ -0,0 +1,19 @@
+package command
+
+import (
+	"github.com/owncloud/ocis/v2/services/postprocessing/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 {
+			// not implemented
+			return nil
+		},
+	}
+}