rename folder extensions -> services

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

services/web/pkg/assets/option.go

@@ -0,0 +1,50 @@
+package assets
+
+import (
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/extensions/web"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/ocis-pkg/assetsfs"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+)
+
+// New returns a new http filesystem to serve assets.
+func New(opts ...Option) http.FileSystem {
+	options := newOptions(opts...)
+	return assetsfs.New(web.Assets, options.Config.Asset.Path, options.Logger)
+}
+
+// Option defines a single option function.
+type Option func(o *Options)
+
+// Options defines the available options for this package.
+type Options struct {
+	Logger log.Logger
+	Config *config.Config
+}
+
+// newOptions initializes the available default options.
+func newOptions(opts ...Option) Options {
+	opt := Options{}
+
+	for _, o := range opts {
+		o(&opt)
+	}
+
+	return opt
+}
+
+// Logger provides a function to set the logger option.
+func Logger(val log.Logger) Option {
+	return func(o *Options) {
+		o.Logger = val
+	}
+}
+
+// Config provides a function to set the config option.
+func Config(val *config.Config) Option {
+	return func(o *Options) {
+		o.Config = val
+	}
+}

services/web/pkg/assets/server.go

@@ -0,0 +1,80 @@
+package assets
+
+import (
+	"bytes"
+	"golang.org/x/net/html"
+	"io"
+	"mime"
+	"net/http"
+	"path"
+	"path/filepath"
+)
+
+type fileServer struct {
+	root http.FileSystem
+}
+
+func FileServer(root http.FileSystem) http.Handler {
+	return &fileServer{root}
+}
+
+func (f *fileServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	upath := path.Clean(path.Join("/", r.URL.Path))
+	r.URL.Path = upath
+
+	asset, err := f.root.Open(upath)
+	if err != nil {
+		r.URL.Path = "/index.html"
+		f.ServeHTTP(w, r)
+		return
+	}
+	defer asset.Close()
+
+	s, _ := asset.Stat()
+	if s.IsDir() {
+		r.URL.Path = "/index.html"
+		f.ServeHTTP(w, r)
+		return
+	}
+
+	w.Header().Set("Content-Type", mime.TypeByExtension(filepath.Ext(s.Name())))
+
+	buf := new(bytes.Buffer)
+
+	switch s.Name() {
+	case "index.html", "oidc-callback.html", "oidc-silent-redirect.html":
+		_ = withBase(buf, asset, "/")
+	default:
+		_, _ = buf.ReadFrom(asset)
+	}
+
+	_, _ = w.Write(buf.Bytes())
+}
+
+func withBase(w io.Writer, r io.Reader, base string) error {
+	doc, _ := html.Parse(r)
+	var parse func(*html.Node)
+	parse = func(n *html.Node) {
+		if n.Type == html.ElementNode && n.Data == "head" {
+			n.InsertBefore(&html.Node{
+				Type: html.ElementNode,
+				Data: "base",
+				Attr: []html.Attribute{
+					{
+						Key: "href",
+						Val: base,
+					},
+				},
+			}, n.FirstChild)
+
+			return
+		}
+
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			parse(c)
+		}
+	}
+	parse(doc)
+
+	return html.Render(w, doc)
+}

services/web/pkg/command/health.go

@@ -0,0 +1,57 @@
+package command
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config/parser"
+	"github.com/owncloud/ocis/v2/extensions/web/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/web/pkg/command/root.go

@@ -0,0 +1,64 @@
+package command
+
+import (
+	"context"
+	"os"
+
+	"github.com/owncloud/ocis/v2/extensions/web/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 web command.
+func Execute(cfg *config.Config) error {
+	app := clihelper.DefaultApp(&cli.App{
+		Name:     "web",
+		Usage:    "Serve ownCloud Web for oCIS",
+		Commands: GetCommands(cfg),
+	})
+
+	cli.HelpFlag = &cli.BoolFlag{
+		Name:  "help,h",
+		Usage: "Show the help",
+	}
+
+	return app.Run(os.Args)
+}
+
+// SutureService allows for the web command to be embedded and supervised by a suture supervisor tree.
+type SutureService struct {
+	cfg *config.Config
+}
+
+// NewSutureService creates a new web.SutureService
+func NewSutureService(cfg *ociscfg.Config) suture.Service {
+	cfg.Web.Commons = cfg.Commons
+	return SutureService{
+		cfg: cfg.Web,
+	}
+}
+
+func (s SutureService) Serve(ctx context.Context) error {
+	s.cfg.Context = ctx
+	if err := Execute(s.cfg); err != nil {
+		return err
+	}
+
+	return nil
+}

services/web/pkg/command/server.go

@@ -0,0 +1,125 @@
+package command
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"github.com/oklog/run"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config/parser"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/logging"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/metrics"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/server/debug"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/server/http"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/tracing"
+	"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
+			}
+
+			// actually read the contents of the config file and override defaults
+			if cfg.File != "" {
+				contents, err := ioutil.ReadFile(cfg.File)
+				if err != nil {
+					logger.Err(err).Msg("error opening config file")
+					return err
+				}
+				if err = json.Unmarshal(contents, &cfg.Web.Config); err != nil {
+					logger.Fatal().Err(err).Msg("error unmarshalling config file")
+					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()
+
+			{
+				server, err := http.Server(
+					http.Logger(logger),
+					http.Context(ctx),
+					http.Namespace(cfg.HTTP.Namespace),
+					http.Config(cfg),
+					http.Metrics(metrics),
+				)
+
+				if err != nil {
+					logger.Info().
+						Err(err).
+						Str("transport", "http").
+						Msg("Failed to initialize server")
+
+					return err
+				}
+
+				gr.Add(func() error {
+					err := server.Run()
+					if err != nil {
+						logger.Error().
+							Err(err).
+							Str("transport", "http").
+							Msg("Failed to start server")
+					}
+					return err
+				}, func(_ error) {
+					logger.Info().
+						Str("transport", "http").
+						Msg("Shutting down server")
+
+					cancel()
+				})
+			}
+
+			{
+				server, err := debug.Server(
+					debug.Logger(logger),
+					debug.Context(ctx),
+					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()
+				})
+			}
+
+			return gr.Run()
+		},
+	}
+}

services/web/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/web/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.HTTP.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
+		},
+	}
+}

services/web/pkg/config/config.go

@@ -0,0 +1,79 @@
+package config
+
+import (
+	"context"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/shared"
+)
+
+// Config combines all available configuration parts.
+type Config struct {
+	Commons *shared.Commons `yaml:"-"` // don't use this directly as configuration for a service
+
+	Service Service `yaml:"-"`
+
+	Tracing *Tracing `yaml:"tracing"`
+	Log     *Log     `yaml:"log"`
+	Debug   Debug    `yaml:"debug"`
+
+	HTTP HTTP `yaml:"http"`
+
+	Asset Asset  `yaml:"asset"`
+	File  string `yaml:"file" env:"WEB_UI_CONFIG"` // TODO: rename this to a more self explaining string
+	Web   Web    `yaml:"web"`
+
+	Context context.Context `yaml:"-"`
+}
+
+// Asset defines the available asset configuration.
+type Asset struct {
+	Path string `yaml:"path" env:"WEB_ASSET_PATH"`
+}
+
+// WebConfig defines the available web configuration for a dynamically rendered config.json.
+type WebConfig struct {
+	Server        string                 `json:"server,omitempty" yaml:"server" env:"OCIS_URL;WEB_UI_CONFIG_SERVER"`
+	Theme         string                 `json:"theme,omitempty" yaml:"theme" env:""`
+	Version       string                 `json:"version,omitempty" yaml:"version" env:"WEB_UI_CONFIG_VERSION"`
+	OpenIDConnect OIDC                   `json:"openIdConnect,omitempty" yaml:"oids"`
+	Apps          []string               `json:"apps" yaml:"apps"`
+	ExternalApps  []ExternalApp          `json:"external_apps,omitempty" yaml:"external_apps"`
+	Options       map[string]interface{} `json:"options,omitempty" yaml:"options"`
+}
+
+// OIDC defines the available oidc configuration
+type OIDC struct {
+	MetadataURL  string `json:"metadata_url,omitempty" yaml:"metadata_url" env:"WEB_OIDC_METADATA_URL"`
+	Authority    string `json:"authority,omitempty" yaml:"authority" env:"OCIS_URL;OCIS_OIDC_ISSUER;WEB_OIDC_AUTHORITY" desc:"URL of the OIDC issuer. It defaults to URL of the builtin IDP."`
+	ClientID     string `json:"client_id,omitempty" yaml:"client_id" env:"WEB_OIDC_CLIENT_ID"`
+	ResponseType string `json:"response_type,omitempty" yaml:"response_type" env:"WEB_OIDC_RESPONSE_TYPE"`
+	Scope        string `json:"scope,omitempty" yaml:"scope" env:"WEB_OIDC_SCOPE"`
+}
+
+// ExternalApp defines an external web app.
+// {
+//	"name": "hello",
+//	"path": "http://localhost:9105/hello.js",
+//	  "config": {
+//	    "url": "http://localhost:9105"
+//	  }
+//  }
+type ExternalApp struct {
+	ID   string `json:"id,omitempty" yaml:"id"`
+	Path string `json:"path,omitempty" yaml:"path"`
+	// Config is completely dynamic, because it depends on the extension
+	Config map[string]interface{} `json:"config,omitempty" yaml:"config"`
+}
+
+// ExternalAppConfig defines an external web app configuration.
+type ExternalAppConfig struct {
+	URL string `json:"url,omitempty" yaml:"url" env:""`
+}
+
+// Web defines the available web configuration.
+type Web struct {
+	Path        string    `yaml:"path" env:"WEB_UI_PATH"`
+	ThemeServer string    `yaml:"theme_server" env:"OCIS_URL;WEB_UI_THEME_SERVER"` // used to build Theme in WebConfig
+	ThemePath   string    `yaml:"theme_path" env:"WEB_UI_THEME_PATH"`              // used to build Theme in WebConfig
+	Config      WebConfig `yaml:"config"`
+}

services/web/pkg/config/debug.go

@@ -0,0 +1,9 @@
+package config
+
+// Debug defines the available debug configuration.
+type Debug struct {
+	Addr   string `yaml:"addr" env:"WEB_DEBUG_ADDR" desc:"Bind address of the debug server, where metrics, health, config and debug endpoints will be exposed."`
+	Token  string `yaml:"token" env:"WEB_DEBUG_TOKEN" desc:"Token to secure the metrics endpoint"`
+	Pprof  bool   `yaml:"pprof" env:"WEB_DEBUG_PPROF" desc:"Enables pprof, which can be used for profiling"`
+	Zpages bool   `yaml:"zpages" env:"WEB_DEBUG_ZPAGES" desc:"Enables zpages, which can be used for collecting and viewing in-memory traces."`
+}

services/web/pkg/config/defaults/defaultconfig.go

@@ -0,0 +1,94 @@
+package defaults
+
+import (
+	"strings"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+)
+
+func FullDefaultConfig() *config.Config {
+	cfg := DefaultConfig()
+	EnsureDefaults(cfg)
+	Sanitize(cfg)
+	return cfg
+}
+
+func DefaultConfig() *config.Config {
+	return &config.Config{
+		Debug: config.Debug{
+			Addr:   "127.0.0.1:9104",
+			Token:  "",
+			Pprof:  false,
+			Zpages: false,
+		},
+		HTTP: config.HTTP{
+			Addr:      "127.0.0.1:9100",
+			Root:      "/",
+			Namespace: "com.owncloud.web",
+			CacheTTL:  604800, // 7 days
+		},
+		Service: config.Service{
+			Name: "web",
+		},
+		Asset: config.Asset{
+			Path: "",
+		},
+		Web: config.Web{
+			Path:        "",
+			ThemeServer: "https://localhost:9200",
+			ThemePath:   "/themes/owncloud/theme.json",
+			Config: config.WebConfig{
+				Server:  "https://localhost:9200",
+				Theme:   "",
+				Version: "0.1.0",
+				OpenIDConnect: config.OIDC{
+					MetadataURL:  "",
+					Authority:    "https://localhost:9200",
+					ClientID:     "web",
+					ResponseType: "code",
+					Scope:        "openid profile email",
+				},
+				Apps: []string{"files", "search", "preview", "text-editor", "pdf-viewer", "external", "user-management"},
+				Options: map[string]interface{}{
+					"hideSearchBar": false,
+				},
+			},
+		},
+	}
+}
+
+func EnsureDefaults(cfg *config.Config) {
+	// provide with defaults for shared logging, since we need a valid destination address for BindEnv.
+	if cfg.Log == nil && cfg.Commons != nil && cfg.Commons.Log != nil {
+		cfg.Log = &config.Log{
+			Level:  cfg.Commons.Log.Level,
+			Pretty: cfg.Commons.Log.Pretty,
+			Color:  cfg.Commons.Log.Color,
+			File:   cfg.Commons.Log.File,
+		}
+	} else if cfg.Log == nil {
+		cfg.Log = &config.Log{}
+	}
+	// provide with defaults for shared tracing, since we need a valid destination address for BindEnv.
+	if cfg.Tracing == nil && cfg.Commons != nil && cfg.Commons.Tracing != nil {
+		cfg.Tracing = &config.Tracing{
+			Enabled:   cfg.Commons.Tracing.Enabled,
+			Type:      cfg.Commons.Tracing.Type,
+			Endpoint:  cfg.Commons.Tracing.Endpoint,
+			Collector: cfg.Commons.Tracing.Collector,
+		}
+	} else if cfg.Tracing == nil {
+		cfg.Tracing = &config.Tracing{}
+	}
+}
+
+func Sanitize(cfg *config.Config) {
+	// sanitize config
+	if cfg.HTTP.Root != "/" {
+		cfg.HTTP.Root = strings.TrimRight(cfg.HTTP.Root, "/")
+	}
+	// build well known openid-configuration endpoint if it is not set
+	if cfg.Web.Config.OpenIDConnect.MetadataURL == "" {
+		cfg.Web.Config.OpenIDConnect.MetadataURL = strings.TrimRight(cfg.Web.Config.OpenIDConnect.Authority, "/") + "/.well-known/openid-configuration"
+	}
+}

services/web/pkg/config/http.go

@@ -0,0 +1,9 @@
+package config
+
+// HTTP defines the available http configuration.
+type HTTP struct {
+	Addr      string `yaml:"addr" env:"WEB_HTTP_ADDR"`
+	Namespace string `yaml:"-"`
+	Root      string `yaml:"root" env:"WEB_HTTP_ROOT"`
+	CacheTTL  int    `yaml:"cache_ttl" env:"WEB_CACHE_TTL"`
+}

services/web/pkg/config/log.go

@@ -0,0 +1,9 @@
+package config
+
+// Log defines the available log configuration.
+type Log struct {
+	Level  string `mapstructure:"level" env:"OCIS_LOG_LEVEL;WEB_LOG_LEVEL" desc:"The log level. Valid values are: \"panic\", \"fatal\", \"error\", \"warn\", \"info\", \"debug\", \"trace\"."`
+	Pretty bool   `mapstructure:"pretty" env:"OCIS_LOG_PRETTY;WEB_LOG_PRETTY" desc:"Activates pretty log output."`
+	Color  bool   `mapstructure:"color" env:"OCIS_LOG_COLOR;WEB_LOG_COLOR" desc:"Activates colorized log output."`
+	File   string `mapstructure:"file" env:"OCIS_LOG_FILE;WEB_LOG_FILE" desc:"The path to the log file. Activates logging to this file if set."`
+}

services/web/pkg/config/parser/parse.go

@@ -0,0 +1,37 @@
+package parser
+
+import (
+	"errors"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config/defaults"
+	ociscfg "github.com/owncloud/ocis/v2/ocis-pkg/config"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/config/envdecode"
+)
+
+// ParseConfig loads configuration from known paths.
+func ParseConfig(cfg *config.Config) error {
+	_, err := ociscfg.BindSourcesToStructs(cfg.Service.Name, cfg)
+	if err != nil {
+		return err
+	}
+
+	defaults.EnsureDefaults(cfg)
+
+	// load all env variables relevant to the config in the current context.
+	if err := envdecode.Decode(cfg); err != nil {
+		// no environment variable set for this config is an expected "error"
+		if !errors.Is(err, envdecode.ErrNoTargetFieldsAreSet) {
+			return err
+		}
+	}
+
+	defaults.Sanitize(cfg)
+
+	return Validate(cfg)
+}
+
+func Validate(cfg *config.Config) error {
+	return nil
+}

services/web/pkg/config/service.go

@@ -0,0 +1,6 @@
+package config
+
+// Service defines the available service configuration.
+type Service struct {
+	Name string `yaml:"-"`
+}

services/web/pkg/config/tracing.go

@@ -0,0 +1,9 @@
+package config
+
+// Tracing defines the available tracing configuration.
+type Tracing struct {
+	Enabled   bool   `yaml:"enabled" env:"OCIS_TRACING_ENABLED;WEB_TRACING_ENABLED" desc:"Activates tracing."`
+	Type      string `yaml:"type" env:"OCIS_TRACING_TYPE;WEB_TRACING_TYPE" desc:"The type of tracing. Defaults to \"\", which is the same as \"jaeger\". Allowed tracing types are \"jaeger\" and \"\" as of now."`
+	Endpoint  string `yaml:"endpoint" env:"OCIS_TRACING_ENDPOINT;WEB_TRACING_ENDPOINT" desc:"The endpoint of the tracing agent."`
+	Collector string `yaml:"collector" env:"OCIS_TRACING_COLLECTOR;WEB_TRACING_COLLECTOR" desc:"The HTTP endpoint for sending spans directly to a collector, i.e. http://jaeger-collector:14268/api/traces. Only used if the tracing endpoint is unset."`
+}

services/web/pkg/logging/logging.go

@@ -0,0 +1,17 @@
+package logging
+
+import (
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+)
+
+// LoggerFromConfig initializes a service-specific logger instance.
+func Configure(name string, cfg *config.Log) log.Logger {
+	return log.NewLogger(
+		log.Name(name),
+		log.Level(cfg.Level),
+		log.Pretty(cfg.Pretty),
+		log.Color(cfg.Color),
+		log.File(cfg.File),
+	)
+}

services/web/pkg/metrics/metrics.go

@@ -0,0 +1,32 @@
+package metrics
+
+var (
+	// Namespace defines the namespace for the defines metrics.
+	Namespace = "ocis"
+
+	// Subsystem defines the subsystem for the defines metrics.
+	Subsystem = "web"
+)
+
+// Metrics defines the available metrics of this service.
+type Metrics struct {
+	// Counter  *prometheus.CounterVec
+}
+
+// New initializes the available metrics.
+func New() *Metrics {
+	m := &Metrics{
+		// Counter: prometheus.NewCounterVec(prometheus.CounterOpts{
+		// 	Namespace: Namespace,
+		// 	Subsystem: Subsystem,
+		// 	Name:      "greet_total",
+		// 	Help:      "How many greeting requests processed",
+		// }, []string{}),
+	}
+
+	// prometheus.Register(
+	// 	m.Counter,
+	// )
+
+	return m
+}

services/web/pkg/middleware/silentrefresh.go

@@ -0,0 +1,13 @@
+package middleware
+
+import (
+	"net/http"
+)
+
+// SilentRefresh allows the oidc client lib to silently refresh the token in an iframe
+func SilentRefresh(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("X-Frame-Options", "SAMEORIGIN")
+		next.ServeHTTP(w, r)
+	})
+}

services/web/pkg/server/debug/option.go

@@ -0,0 +1,50 @@
+package debug
+
+import (
+	"context"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+)
+
+// Option defines a single option function.
+type Option func(o *Options)
+
+// Options defines the available options for this package.
+type Options struct {
+	Logger  log.Logger
+	Context context.Context
+	Config  *config.Config
+}
+
+// newOptions initializes the available default options.
+func newOptions(opts ...Option) Options {
+	opt := Options{}
+
+	for _, o := range opts {
+		o(&opt)
+	}
+
+	return opt
+}
+
+// Logger provides a function to set the logger option.
+func Logger(val log.Logger) Option {
+	return func(o *Options) {
+		o.Logger = val
+	}
+}
+
+// Context provides a function to set the context option.
+func Context(val context.Context) Option {
+	return func(o *Options) {
+		o.Context = val
+	}
+}
+
+// Config provides a function to set the config option.
+func Config(val *config.Config) Option {
+	return func(o *Options) {
+		o.Config = val
+	}
+}

services/web/pkg/server/debug/server.go

@@ -0,0 +1,59 @@
+package debug
+
+import (
+	"io"
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/ocis-pkg/service/debug"
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+)
+
+// Server initializes the debug service and server.
+func Server(opts ...Option) (*http.Server, error) {
+	options := newOptions(opts...)
+
+	return debug.NewService(
+		debug.Logger(options.Logger),
+		debug.Name(options.Config.Service.Name),
+		debug.Version(version.GetString()),
+		debug.Address(options.Config.Debug.Addr),
+		debug.Token(options.Config.Debug.Token),
+		debug.Pprof(options.Config.Debug.Pprof),
+		debug.Zpages(options.Config.Debug.Zpages),
+		debug.Health(health(options.Config)),
+		debug.Ready(ready(options.Config)),
+	), nil
+}
+
+// health implements the health check.
+func health(cfg *config.Config) func(http.ResponseWriter, *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/plain")
+		w.WriteHeader(http.StatusOK)
+
+		// TODO: check if services are up and running
+
+		_, err := io.WriteString(w, http.StatusText(http.StatusOK))
+		// io.WriteString should not fail but if it does we want to know.
+		if err != nil {
+			panic(err)
+		}
+	}
+}
+
+// ready implements the ready check.
+func ready(cfg *config.Config) func(http.ResponseWriter, *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/plain")
+		w.WriteHeader(http.StatusOK)
+
+		// TODO: check if services are up and running
+
+		_, err := io.WriteString(w, http.StatusText(http.StatusOK))
+		// io.WriteString should not fail but if it does we want to know.
+		if err != nil {
+			panic(err)
+		}
+	}
+}

services/web/pkg/server/http/option.go

@@ -0,0 +1,76 @@
+package http
+
+import (
+	"context"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/metrics"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+	"github.com/urfave/cli/v2"
+)
+
+// Option defines a single option function.
+type Option func(o *Options)
+
+// Options defines the available options for this package.
+type Options struct {
+	Logger    log.Logger
+	Context   context.Context
+	Config    *config.Config
+	Metrics   *metrics.Metrics
+	Flags     []cli.Flag
+	Namespace string
+}
+
+// newOptions initializes the available default options.
+func newOptions(opts ...Option) Options {
+	opt := Options{}
+
+	for _, o := range opts {
+		o(&opt)
+	}
+
+	return opt
+}
+
+// Logger provides a function to set the logger option.
+func Logger(val log.Logger) Option {
+	return func(o *Options) {
+		o.Logger = val
+	}
+}
+
+// Context provides a function to set the context option.
+func Context(val context.Context) Option {
+	return func(o *Options) {
+		o.Context = val
+	}
+}
+
+// Config provides a function to set the config option.
+func Config(val *config.Config) Option {
+	return func(o *Options) {
+		o.Config = val
+	}
+}
+
+// Metrics provides a function to set the metrics option.
+func Metrics(val *metrics.Metrics) Option {
+	return func(o *Options) {
+		o.Metrics = val
+	}
+}
+
+// Flags provides a function to set the flags option.
+func Flags(val []cli.Flag) Option {
+	return func(o *Options) {
+		o.Flags = append(o.Flags, val...)
+	}
+}
+
+// Namespace provides a function to set the Namespace option.
+func Namespace(val string) Option {
+	return func(o *Options) {
+		o.Namespace = val
+	}
+}

services/web/pkg/server/http/server.go

@@ -0,0 +1,57 @@
+package http
+
+import (
+	chimiddleware "github.com/go-chi/chi/v5/middleware"
+	webmid "github.com/owncloud/ocis/v2/extensions/web/pkg/middleware"
+	svc "github.com/owncloud/ocis/v2/extensions/web/pkg/service/v0"
+	"github.com/owncloud/ocis/v2/ocis-pkg/middleware"
+	"github.com/owncloud/ocis/v2/ocis-pkg/service/http"
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+	"go-micro.dev/v4"
+)
+
+// Server initializes the http service and server.
+func Server(opts ...Option) (http.Service, error) {
+	options := newOptions(opts...)
+
+	service := http.NewService(
+		http.Logger(options.Logger),
+		http.Namespace(options.Namespace),
+		http.Name("web"),
+		http.Version(version.GetString()),
+		http.Address(options.Config.HTTP.Addr),
+		http.Context(options.Context),
+		http.Flags(options.Flags...),
+	)
+
+	handle := svc.NewService(
+		svc.Logger(options.Logger),
+		svc.Config(options.Config),
+		svc.Middleware(
+			chimiddleware.RealIP,
+			chimiddleware.RequestID,
+			middleware.NoCache,
+			middleware.Secure,
+			webmid.SilentRefresh,
+			middleware.Version(
+				"web",
+				version.GetString(),
+			),
+			middleware.Logger(
+				options.Logger,
+			),
+		),
+	)
+
+	{
+		handle = svc.NewInstrument(handle, options.Metrics)
+		handle = svc.NewLogging(handle, options.Logger)
+		handle = svc.NewTracing(handle)
+	}
+
+	if err := micro.RegisterHandler(service.Server(), handle); err != nil {
+		return http.Service{}, err
+	}
+
+	return service, nil
+}

services/web/pkg/service/v0/instrument.go

@@ -0,0 +1,30 @@
+package svc
+
+import (
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/metrics"
+)
+
+// NewInstrument returns a service that instruments metrics.
+func NewInstrument(next Service, metrics *metrics.Metrics) Service {
+	return instrument{
+		next:    next,
+		metrics: metrics,
+	}
+}
+
+type instrument struct {
+	next    Service
+	metrics *metrics.Metrics
+}
+
+// ServeHTTP implements the Service interface.
+func (i instrument) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	i.next.ServeHTTP(w, r)
+}
+
+// Config implements the Service interface.
+func (i instrument) Config(w http.ResponseWriter, r *http.Request) {
+	i.next.Config(w, r)
+}

services/web/pkg/service/v0/logging.go

@@ -0,0 +1,30 @@
+package svc
+
+import (
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+)
+
+// NewLogging returns a service that logs messages.
+func NewLogging(next Service, logger log.Logger) Service {
+	return logging{
+		next:   next,
+		logger: logger,
+	}
+}
+
+type logging struct {
+	next   Service
+	logger log.Logger
+}
+
+// ServeHTTP implements the Service interface.
+func (l logging) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	l.next.ServeHTTP(w, r)
+}
+
+// Config implements the Service interface.
+func (l logging) Config(w http.ResponseWriter, r *http.Request) {
+	l.next.Config(w, r)
+}

services/web/pkg/service/v0/option.go

@@ -0,0 +1,50 @@
+package svc
+
+import (
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+)
+
+// Option defines a single option function.
+type Option func(o *Options)
+
+// Options defines the available options for this package.
+type Options struct {
+	Logger     log.Logger
+	Config     *config.Config
+	Middleware []func(http.Handler) http.Handler
+}
+
+// newOptions initializes the available default options.
+func newOptions(opts ...Option) Options {
+	opt := Options{}
+
+	for _, o := range opts {
+		o(&opt)
+	}
+
+	return opt
+}
+
+// Logger provides a function to set the logger option.
+func Logger(val log.Logger) Option {
+	return func(o *Options) {
+		o.Logger = val
+	}
+}
+
+// Config provides a function to set the config option.
+func Config(val *config.Config) Option {
+	return func(o *Options) {
+		o.Config = val
+	}
+}
+
+// Middleware provides a function to set the middleware option.
+func Middleware(val ...func(http.Handler) http.Handler) Option {
+	return func(o *Options) {
+		o.Middleware = val
+	}
+}

services/web/pkg/service/v0/service.go

@@ -0,0 +1,168 @@
+package svc
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/assets"
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+)
+
+var (
+	// ErrConfigInvalid is returned when the config parse is invalid.
+	ErrConfigInvalid = `Invalid or missing config`
+)
+
+// Service defines the extension handlers.
+type Service interface {
+	ServeHTTP(http.ResponseWriter, *http.Request)
+	Config(http.ResponseWriter, *http.Request)
+}
+
+// NewService returns a service implementation for Service.
+func NewService(opts ...Option) Service {
+	options := newOptions(opts...)
+
+	m := chi.NewMux()
+	m.Use(options.Middleware...)
+
+	svc := Web{
+		logger: options.Logger,
+		config: options.Config,
+		mux:    m,
+	}
+
+	m.Route(options.Config.HTTP.Root, func(r chi.Router) {
+		r.Get("/config.json", svc.Config)
+		r.Mount("/", svc.Static(options.Config.HTTP.CacheTTL))
+	})
+
+	return svc
+}
+
+// Web defines implements the business logic for Service.
+type Web struct {
+	logger log.Logger
+	config *config.Config
+	mux    *chi.Mux
+}
+
+// ServeHTTP implements the Service interface.
+func (p Web) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	p.mux.ServeHTTP(w, r)
+}
+
+func (p Web) getPayload() (payload []byte, err error) {
+
+	if p.config.Web.Path == "" {
+		// render dynamically using config
+
+		// build theme url
+		if themeServer, err := url.Parse(p.config.Web.ThemeServer); err == nil {
+			p.config.Web.Config.Theme = themeServer.String() + p.config.Web.ThemePath
+		} else {
+			p.config.Web.Config.Theme = p.config.Web.ThemePath
+		}
+
+		if p.config.Web.Config.ExternalApps == nil {
+			p.config.Web.Config.ExternalApps = []config.ExternalApp{
+				{
+					ID:   "settings",
+					Path: "/settings.js",
+				},
+			}
+		}
+
+		// make apps render as empty array if it is empty
+		// TODO remove once https://github.com/golang/go/issues/27589 is fixed
+		if len(p.config.Web.Config.Apps) == 0 {
+			p.config.Web.Config.Apps = make([]string, 0)
+		}
+
+		return json.Marshal(p.config.Web.Config)
+	}
+
+	// try loading from file
+	if _, err = os.Stat(p.config.Web.Path); os.IsNotExist(err) {
+		p.logger.Fatal().
+			Err(err).
+			Str("config", p.config.Web.Path).
+			Msg("web config doesn't exist")
+	}
+
+	payload, err = ioutil.ReadFile(p.config.Web.Path)
+
+	if err != nil {
+		p.logger.Fatal().
+			Err(err).
+			Str("config", p.config.Web.Path).
+			Msg("failed to read custom config")
+	}
+	return
+}
+
+// Config implements the Service interface.
+func (p Web) Config(w http.ResponseWriter, r *http.Request) {
+
+	payload, err := p.getPayload()
+	if err != nil {
+		http.Error(w, ErrConfigInvalid, http.StatusUnprocessableEntity)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	if _, err := w.Write(payload); err != nil {
+		p.logger.Error().Err(err).Msg("could not write config response")
+	}
+}
+
+// Static simply serves all static files.
+func (p Web) Static(ttl int) http.HandlerFunc {
+	rootWithSlash := p.config.HTTP.Root
+
+	if !strings.HasSuffix(rootWithSlash, "/") {
+		rootWithSlash = rootWithSlash + "/"
+	}
+
+	static := http.StripPrefix(
+		rootWithSlash,
+		assets.FileServer(
+			assets.New(
+				assets.Logger(p.logger),
+				assets.Config(p.config),
+			),
+		),
+	)
+
+	lastModified := time.Now().UTC().Format(http.TimeFormat)
+	expires := time.Now().Add(time.Second * time.Duration(ttl)).UTC().Format(http.TimeFormat)
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		if rootWithSlash != "/" && r.URL.Path == p.config.HTTP.Root {
+			http.Redirect(
+				w,
+				r,
+				rootWithSlash,
+				http.StatusMovedPermanently,
+			)
+			return
+		}
+
+		w.Header().Set("Cache-Control", fmt.Sprintf("max-age=%s, must-revalidate", strconv.Itoa(ttl)))
+		w.Header().Set("Expires", expires)
+		w.Header().Set("Last-Modified", lastModified)
+		w.Header().Set("SameSite", "Strict")
+
+		static.ServeHTTP(w, r)
+	}
+}

services/web/pkg/service/v0/tracing.go

@@ -0,0 +1,26 @@
+package svc
+
+import (
+	"net/http"
+)
+
+// NewTracing returns a service that instruments traces.
+func NewTracing(next Service) Service {
+	return tracing{
+		next: next,
+	}
+}
+
+type tracing struct {
+	next Service
+}
+
+// ServeHTTP implements the Service interface.
+func (t tracing) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	t.next.ServeHTTP(w, r)
+}
+
+// Config implements the Service interface.
+func (t tracing) Config(w http.ResponseWriter, r *http.Request) {
+	t.next.Config(w, r)
+}

services/web/pkg/tracing/tracing.go

@@ -0,0 +1,23 @@
+package tracing
+
+import (
+	"github.com/owncloud/ocis/v2/extensions/web/pkg/config"
+	pkgtrace "github.com/owncloud/ocis/v2/ocis-pkg/tracing"
+	"go.opentelemetry.io/otel/trace"
+)
+
+var (
+	// TraceProvider is the global trace provider for the web service.
+	TraceProvider = trace.NewNoopTracerProvider()
+)
+
+func Configure(cfg *config.Config) error {
+	var err error
+	if cfg.Tracing.Enabled {
+		if TraceProvider, err = pkgtrace.GetTraceProvider(cfg.Tracing.Endpoint, cfg.Tracing.Collector, cfg.Service.Name, cfg.Tracing.Type); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}