Userlog Service Improvements

Dockerfile

@@ -21,7 +21,7 @@ COPY ./ /ocis/
 WORKDIR /ocis/ocis
 RUN make ci-node-generate
 
-FROM owncloudci/golang:1.18 as build
+FROM owncloudci/golang:1.19 as build
 
 COPY --from=generate /ocis /ocis
 

changelog/unreleased/userlog-improvements.md

@@ -0,0 +1,5 @@
+Enhancement: Userlog
+
+Enhane userlog service with proper api and messages
+
+https://github.com/owncloud/ocis/pull/5699

services/frontend/pkg/revaconfig/config.go

@@ -267,6 +267,9 @@ func FrontendConfigFromStruct(cfg *config.Config) (map[string]interface{}, error
 								"share_jail": cfg.EnableShareJail,
 								"max_quota":  cfg.MaxQuota,
 							},
+							"notifications": map[string]interface{}{
+								"endpoints": []string{"list", "get", "delete"},
+							},
 						},
 						"version": map[string]interface{}{
 							"product":        "Infinite Scale",

services/userlog/pkg/command/server.go

@@ -25,36 +25,17 @@ import (
 
 // all events we care about
 var _registeredEvents = []events.Unmarshaller{
-	// file related
-	events.UploadReady{},
-	events.ContainerCreated{},
-	events.FileTouched{},
-	events.FileDownloaded{},
-	events.FileVersionRestored{},
-	events.ItemMoved{},
-	events.ItemTrashed{},
-	events.ItemPurged{},
-	events.ItemRestored{},
-
 	// space related
-	events.SpaceCreated{},
-	events.SpaceRenamed{},
-	events.SpaceEnabled{},
 	events.SpaceDisabled{},
 	events.SpaceDeleted{},
 	events.SpaceShared{},
 	events.SpaceUnshared{},
-	events.SpaceUpdated{},
 	events.SpaceMembershipExpired{},
 
 	// share related
 	events.ShareCreated{},
-	// events.ShareRemoved{}, // TODO: ShareRemoved doesn't hold sharee information
-	events.ShareUpdated{},
+	events.ShareRemoved{},
 	events.ShareExpired{},
-	events.LinkCreated{},
-	// events.LinkRemoved{}, // TODO: LinkRemoved doesn't hold sharee information
-	events.LinkUpdated{},
 }
 
 // Server is the entrypoint for the server command.

services/userlog/pkg/service/conversion.go

@@ -0,0 +1,249 @@
+package service
+
+import (
+	"bytes"
+	"errors"
+	"text/template"
+	"time"
+
+	user "github.com/cs3org/go-cs3apis/cs3/identity/user/v1beta1"
+	collaboration "github.com/cs3org/go-cs3apis/cs3/sharing/collaboration/v1beta1"
+	storageprovider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
+	"github.com/cs3org/reva/v2/pkg/events"
+	"github.com/cs3org/reva/v2/pkg/storagespace"
+	"github.com/cs3org/reva/v2/pkg/utils"
+	ehmsg "github.com/owncloud/ocis/v2/protogen/gen/ocis/messages/eventhistory/v0"
+)
+
+var (
+	_resourceTypeSpace = "storagespace"
+	_resourceTypeShare = "share"
+)
+
+// OC10Notification is the oc10 style representation of an event
+// some fields are left out for simplicity
+type OC10Notification struct {
+	EventID        string                 `json:"notification_id"`
+	Service        string                 `json:"app"`
+	UserName       string                 `json:"user"`
+	Timestamp      string                 `json:"datetime"`
+	ResourceID     string                 `json:"object_id"`
+	ResourceType   string                 `json:"object_type"`
+	Subject        string                 `json:"subject"`
+	SubjectRaw     string                 `json:"subjectRich"`
+	Message        string                 `json:"message"`
+	MessageRaw     string                 `json:"messageRich"`
+	MessageDetails map[string]interface{} `json:"messageRichParameters"`
+}
+
+// ConvertEvent converts an eventhistory event to an OC10Notification
+func (ul *UserlogService) ConvertEvent(event *ehmsg.Event) (OC10Notification, error) {
+	etype, ok := ul.registeredEvents[event.Type]
+	if !ok {
+		// this should not happen
+		return OC10Notification{}, errors.New("eventtype not registered")
+	}
+
+	einterface, err := etype.Unmarshal(event.Event)
+	if err != nil {
+		// this shouldn't happen either
+		return OC10Notification{}, errors.New("cant unmarshal event")
+	}
+
+	switch ev := einterface.(type) {
+	default:
+		return OC10Notification{}, errors.New("unknown event type")
+	// space related
+	case events.SpaceDisabled:
+		return ul.spaceMessage(event.Id, SpaceDisabled, ev.Executant, ev.ID.GetOpaqueId(), ev.Timestamp)
+	case events.SpaceDeleted:
+		return ul.spaceDeletedMessage(event.Id, ev.Executant, ev.ID.GetOpaqueId(), ev.SpaceName, ev.Timestamp)
+	case events.SpaceShared:
+		return ul.spaceMessage(event.Id, SpaceShared, ev.Executant, ev.ID.GetOpaqueId(), ev.Timestamp)
+	case events.SpaceUnshared:
+		return ul.spaceMessage(event.Id, SpaceUnshared, ev.Executant, ev.ID.GetOpaqueId(), ev.Timestamp)
+	case events.SpaceMembershipExpired:
+		return ul.spaceMessage(event.Id, SpaceMembershipExpired, ev.SpaceOwner, ev.SpaceID.GetOpaqueId(), ev.ExpiredAt)
+
+	// share related
+	case events.ShareCreated:
+		return ul.shareMessage(event.Id, ShareCreated, ev.Executant, ev.ItemID, ev.ShareID, utils.TSToTime(ev.CTime))
+	case events.ShareExpired:
+		return ul.shareMessage(event.Id, ShareExpired, ev.ShareOwner, ev.ItemID, ev.ShareID, ev.ExpiredAt)
+	case events.ShareRemoved:
+		return ul.shareMessage(event.Id, ShareRemoved, ev.Executant, ev.ItemID, ev.ShareID, ev.Timestamp)
+	}
+}
+
+func (ul *UserlogService) spaceDeletedMessage(eventid string, executant *user.UserId, spaceid string, spacename string, ts time.Time) (OC10Notification, error) {
+	_, user, err := utils.Impersonate(executant, ul.gwClient, ul.cfg.MachineAuthAPIKey)
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	subj, subjraw, msg, msgraw, err := ul.composeMessage(SpaceDeleted, map[string]string{
+		"username":  user.GetDisplayName(),
+		"spacename": spacename,
+	})
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	details := ul.getDetails(user, nil, nil, nil)
+	details["space"] = map[string]string{
+		"id":   spaceid,
+		"name": spacename,
+	}
+
+	return OC10Notification{
+		EventID:        eventid,
+		Service:        ul.cfg.Service.Name,
+		UserName:       user.GetUsername(),
+		Timestamp:      ts.Format(time.RFC3339Nano),
+		ResourceID:     spaceid,
+		ResourceType:   _resourceTypeSpace,
+		Subject:        subj,
+		SubjectRaw:     subjraw,
+		Message:        msg,
+		MessageRaw:     msgraw,
+		MessageDetails: details,
+	}, nil
+}
+
+func (ul *UserlogService) spaceMessage(eventid string, eventname string, executant *user.UserId, spaceid string, ts time.Time) (OC10Notification, error) {
+	ctx, user, err := utils.Impersonate(executant, ul.gwClient, ul.cfg.MachineAuthAPIKey)
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	space, err := ul.getSpace(ctx, spaceid)
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	subj, subjraw, msg, msgraw, err := ul.composeMessage(eventname, map[string]string{
+		"username":  user.GetDisplayName(),
+		"spacename": space.GetName(),
+	})
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	return OC10Notification{
+		EventID:        eventid,
+		Service:        ul.cfg.Service.Name,
+		UserName:       user.GetUsername(),
+		Timestamp:      ts.Format(time.RFC3339Nano),
+		ResourceID:     spaceid,
+		ResourceType:   _resourceTypeSpace,
+		Subject:        subj,
+		SubjectRaw:     subjraw,
+		Message:        msg,
+		MessageRaw:     msgraw,
+		MessageDetails: ul.getDetails(user, space, nil, nil),
+	}, nil
+}
+
+func (ul *UserlogService) shareMessage(eventid string, eventname string, executant *user.UserId, resourceid *storageprovider.ResourceId, shareid *collaboration.ShareId, ts time.Time) (OC10Notification, error) {
+	ctx, user, err := utils.Impersonate(executant, ul.gwClient, ul.cfg.MachineAuthAPIKey)
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	info, err := ul.getResource(ctx, resourceid)
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	subj, subjraw, msg, msgraw, err := ul.composeMessage(eventname, map[string]string{
+		"username":     user.GetDisplayName(),
+		"resourcename": info.GetName(),
+	})
+	if err != nil {
+		return OC10Notification{}, err
+	}
+
+	return OC10Notification{
+		EventID:        eventid,
+		Service:        ul.cfg.Service.Name,
+		UserName:       user.GetUsername(),
+		Timestamp:      ts.Format(time.RFC3339Nano),
+		ResourceID:     storagespace.FormatResourceID(*info.GetId()),
+		ResourceType:   _resourceTypeShare,
+		Subject:        subj,
+		SubjectRaw:     subjraw,
+		Message:        msg,
+		MessageRaw:     msgraw,
+		MessageDetails: ul.getDetails(user, nil, info, shareid),
+	}, nil
+}
+
+func (ul *UserlogService) composeMessage(eventname string, vars map[string]string) (string, string, string, string, error) {
+	tpl, ok := _templates[eventname]
+	if !ok {
+		return "", "", "", "", errors.New("unknown template name")
+	}
+
+	subject := ul.executeTemplate(tpl.Subject, vars)
+
+	subjectraw := ul.executeTemplate(tpl.Subject, map[string]string{
+		"username":     "{user}",
+		"spacename":    "{space}",
+		"resourcename": "{resource}",
+	})
+
+	message := ul.executeTemplate(tpl.Message, vars)
+
+	messageraw := ul.executeTemplate(tpl.Message, map[string]string{
+		"username":     "{user}",
+		"spacename":    "{space}",
+		"resourcename": "{resource}",
+	})
+
+	return subject, subjectraw, message, messageraw, nil
+
+}
+
+func (ul *UserlogService) getDetails(user *user.User, space *storageprovider.StorageSpace, item *storageprovider.ResourceInfo, shareid *collaboration.ShareId) map[string]interface{} {
+	details := make(map[string]interface{})
+
+	if user != nil {
+		details["user"] = map[string]string{
+			"id":          user.GetId().GetOpaqueId(),
+			"name":        user.GetUsername(),
+			"displayname": user.GetDisplayName(),
+		}
+	}
+
+	if space != nil {
+		details["space"] = map[string]string{
+			"id":   space.GetId().GetOpaqueId(),
+			"name": space.GetName(),
+		}
+	}
+
+	if item != nil {
+		details["resource"] = map[string]string{
+			"id":   storagespace.FormatResourceID(*item.GetId()),
+			"name": item.GetName(),
+		}
+	}
+
+	if shareid != nil {
+		details["share"] = map[string]string{
+			"id": shareid.GetOpaqueId(),
+		}
+	}
+
+	return details
+}
+
+func (ul *UserlogService) executeTemplate(tpl *template.Template, vars map[string]string) string {
+	var writer bytes.Buffer
+	if err := tpl.Execute(&writer, vars); err != nil {
+		ul.log.Error().Err(err).Str("templateName", tpl.Name()).Msg("cannot execute template")
+		return ""
+	}
+
+	return writer.String()
+}