Add tracing to more places in userlog.

This passes the treaceprovider to more places where it belongs
and also adds tracing to the event processing.

services/userlog/pkg/server/http/server.go

@@ -19,8 +19,7 @@ import (
 )
 
 // Service is the service interface
-type Service interface {
-}
+type Service interface{}
 
 // Server initializes the http service and server.
 func Server(opts ...Option) (http.Service, error) {
@@ -90,6 +89,7 @@ func Server(opts ...Option) (http.Service, error) {
 		svc.ValueClient(options.ValueClient),
 		svc.RoleClient(options.RoleClient),
 		svc.RegisteredEvents(options.RegisteredEvents),
+		svc.TraceProvider(options.TracerProvider),
 	)
 	if err != nil {
 		return http.Service{}, err

services/userlog/pkg/service/http.go

@@ -24,7 +24,7 @@ func (ul *UserlogService) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 // HandleGetEvents is the GET handler for events
 func (ul *UserlogService) HandleGetEvents(w http.ResponseWriter, r *http.Request) {
-	ctx, span := tracer.Start(r.Context(), "HandleGetEvents")
+	ctx, span := ul.tracer.Start(r.Context(), "HandleGetEvents")
 	defer span.End()
 	u, ok := revactx.ContextGetUser(ctx)
 	if !ok {

services/userlog/pkg/service/options.go

@@ -10,6 +10,7 @@ import (
 	settingssvc "github.com/owncloud/ocis/v2/protogen/gen/ocis/services/settings/v0"
 	"github.com/owncloud/ocis/v2/services/userlog/pkg/config"
 	"go-micro.dev/v4/store"
+	"go.opentelemetry.io/otel/trace"
 )
 
 // Option for the userlog service
@@ -27,6 +28,7 @@ type Options struct {
 	ValueClient      settingssvc.ValueService
 	RoleClient       settingssvc.RoleService
 	RegisteredEvents []events.Unmarshaller
+	TraceProvider    trace.TracerProvider
 }
 
 // Logger configures a logger for the userlog service
@@ -98,3 +100,10 @@ func RoleClient(rs settingssvc.RoleService) Option {
 		o.RoleClient = rs
 	}
 }
+
+// TraceProvider adds a tracer provider for the userlog service
+func TraceProvider(tp trace.TracerProvider) Option {
+	return func(o *Options) {
+		o.TraceProvider = tp
+	}
+}

services/userlog/pkg/service/service.go

@@ -29,17 +29,10 @@ import (
 	"github.com/r3labs/sse/v2"
 	micrometadata "go-micro.dev/v4/metadata"
 	"go-micro.dev/v4/store"
-	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/trace"
 	"google.golang.org/grpc/metadata"
 )
 
-var tracer trace.Tracer
-
-func init() {
-	tracer = otel.Tracer("github.com/owncloud/ocis/services/userlog/pkg/service")
-}
-
 // UserlogService is the service responsible for user activities
 type UserlogService struct {
 	log              log.Logger
@@ -51,6 +44,8 @@ type UserlogService struct {
 	valueClient      settingssvc.ValueService
 	sse              *sse.Server
 	registeredEvents map[string]events.Unmarshaller
+	tp               trace.TracerProvider
+	tracer           trace.Tracer
 }
 
 // NewUserlogService returns an EventHistory service
@@ -78,6 +73,8 @@ func NewUserlogService(opts ...Option) (*UserlogService, error) {
 		gatewaySelector:  o.GatewaySelector,
 		valueClient:      o.ValueClient,
 		registeredEvents: make(map[string]events.Unmarshaller),
+		tp:               o.TraceProvider,
+		tracer:           o.TraceProvider.Tracer("github.com/owncloud/ocis/services/userlog/pkg/service"),
 	}
 
 	if !ul.cfg.DisableSSE {
@@ -114,91 +111,95 @@ func NewUserlogService(opts ...Option) (*UserlogService, error) {
 // MemorizeEvents stores eventIDs a user wants to receive
 func (ul *UserlogService) MemorizeEvents(ch <-chan events.Event) {
 	for event := range ch {
-		// for each event we need to:
-		// I) find users eligible to receive the event
-		var (
-			users     []string
-			executant *user.UserId
-			err       error
-		)
+		ul.processEvent(event)
+	}
+}
 
-		switch e := event.Event.(type) {
+func (ul *UserlogService) processEvent(event events.Event) {
+	// for each event we need to:
+	// I) find users eligible to receive the event
+	var (
+		users     []string
+		executant *user.UserId
+		err       error
+	)
+
+	switch e := event.Event.(type) {
+	default:
+		err = errors.New("unhandled event")
+	// file related
+	case events.PostprocessingStepFinished:
+		switch e.FinishedStep {
+		case events.PPStepAntivirus:
+			result := e.Result.(events.VirusscanResult)
+			if !result.Infected {
+				return
+			}
+
+			// TODO: should space mangers also be informed?
+			users = append(users, e.ExecutingUser.GetId().GetOpaqueId())
+		case events.PPStepPolicies:
+			if e.Outcome == events.PPOutcomeContinue {
+				return
+			}
+			users = append(users, e.ExecutingUser.GetId().GetOpaqueId())
 		default:
-			err = errors.New("unhandled event")
-		// file related
-		case events.PostprocessingStepFinished:
-			switch e.FinishedStep {
-			case events.PPStepAntivirus:
-				result := e.Result.(events.VirusscanResult)
-				if !result.Infected {
-					continue
-				}
+			return
 
-				// TODO: should space mangers also be informed?
-				users = append(users, e.ExecutingUser.GetId().GetOpaqueId())
-			case events.PPStepPolicies:
-				if e.Outcome == events.PPOutcomeContinue {
-					continue
-				}
-				users = append(users, e.ExecutingUser.GetId().GetOpaqueId())
-			default:
-				continue
-
-			}
-		// space related // TODO: how to find spaceadmins?
-		case events.SpaceDisabled:
-			executant = e.Executant
-			users, err = ul.findSpaceMembers(ul.impersonate(e.Executant), e.ID.GetOpaqueId(), viewer)
-		case events.SpaceDeleted:
-			executant = e.Executant
-			for u := range e.FinalMembers {
-				users = append(users, u)
-			}
-		case events.SpaceShared:
-			executant = e.Executant
-			users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
-		case events.SpaceUnshared:
-			executant = e.Executant
-			users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
-		case events.SpaceMembershipExpired:
-			users, err = ul.resolveID(ul.impersonate(e.SpaceOwner), e.GranteeUserID, e.GranteeGroupID)
-
-		// share related
-		case events.ShareCreated:
-			executant = e.Executant
-			users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
-		case events.ShareRemoved:
-			executant = e.Executant
-			users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
-		case events.ShareExpired:
-			users, err = ul.resolveID(ul.impersonate(e.ShareOwner), e.GranteeUserID, e.GranteeGroupID)
 		}
-
-		if err != nil {
-			// TODO: Find out why this errors on ci pipeline
-			ul.log.Debug().Err(err).Interface("event", event).Msg("error gathering members for event")
-			continue
+	// space related // TODO: how to find spaceadmins?
+	case events.SpaceDisabled:
+		executant = e.Executant
+		users, err = ul.findSpaceMembers(ul.impersonate(e.Executant), e.ID.GetOpaqueId(), viewer)
+	case events.SpaceDeleted:
+		executant = e.Executant
+		for u := range e.FinalMembers {
+			users = append(users, u)
 		}
+	case events.SpaceShared:
+		executant = e.Executant
+		users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
+	case events.SpaceUnshared:
+		executant = e.Executant
+		users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
+	case events.SpaceMembershipExpired:
+		users, err = ul.resolveID(ul.impersonate(e.SpaceOwner), e.GranteeUserID, e.GranteeGroupID)
 
-		// II) filter users who want to receive the event
-		// This step is postponed for later.
-		// For now each user should get all events she is eligible to receive
-		// ...except notifications for their own actions
-		users = removeExecutant(users, executant)
+	// share related
+	case events.ShareCreated:
+		executant = e.Executant
+		users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
+	case events.ShareRemoved:
+		executant = e.Executant
+		users, err = ul.resolveID(ul.impersonate(e.Executant), e.GranteeUserID, e.GranteeGroupID)
+	case events.ShareExpired:
+		users, err = ul.resolveID(ul.impersonate(e.ShareOwner), e.GranteeUserID, e.GranteeGroupID)
+	}
 
-		// III) store the eventID for each user
-		for _, id := range users {
-			if err := ul.addEventToUser(id, event); err != nil {
-				ul.log.Error().Err(err).Str("userID", id).Str("eventid", event.ID).Msg("failed to store event for user")
-				continue
-			}
+	if err != nil {
+		// TODO: Find out why this errors on ci pipeline
+		ul.log.Debug().Err(err).Interface("event", event).Msg("error gathering members for event")
+		return
+	}
+
+	// II) filter users who want to receive the event
+	// This step is postponed for later.
+	// For now each user should get all events she is eligible to receive
+	// ...except notifications for their own actions
+	users = removeExecutant(users, executant)
+
+	// III) store the eventID for each user
+	for _, id := range users {
+		if err := ul.addEventToUser(id, event); err != nil {
+			ul.log.Error().Err(err).Str("userID", id).Str("eventid", event.ID).Msg("failed to store event for user")
+			return
 		}
 	}
 }
 
 // GetEvents allows retrieving events from the eventhistory by userid
 func (ul *UserlogService) GetEvents(ctx context.Context, userid string) ([]*ehmsg.Event, error) {
-	ctx, span := tracer.Start(ctx, "GetEvents")
+	ctx, span := ul.tracer.Start(ctx, "GetEvents")
 	defer span.End()
 	rec, err := ul.store.Read(userid)
 	if err != nil && err != store.ErrNotFound {
@@ -227,11 +228,9 @@ func (ul *UserlogService) GetEvents(ctx context.Context, userid string) ([]*ehms
 		if err := ul.removeExpiredEvents(userid, eventIDs, resp.Events); err != nil {
 			ul.log.Error().Err(err).Str("userid", userid).Msg("could not remove expired events from user")
 		}
-
 	}()
 
 	return resp.Events, nil
-
 }
 
 // DeleteEvents will delete the specified events
@@ -256,7 +255,7 @@ func (ul *UserlogService) DeleteEvents(userid string, evids []string) error {
 
 // StoreGlobalEvent will store a global event that will be returned with each `GetEvents` request
 func (ul *UserlogService) StoreGlobalEvent(ctx context.Context, typ string, data map[string]string) error {
-	ctx, span := tracer.Start(ctx, "StoreGlobalEvent")
+	ctx, span := ul.tracer.Start(ctx, "StoreGlobalEvent")
 	defer span.End()
 	switch typ {
 	default:
@@ -293,12 +292,11 @@ func (ul *UserlogService) StoreGlobalEvent(ctx context.Context, typ string, data
 			return nil
 		})
 	}
-
 }
 
 // GetGlobalEvents will return all global events
 func (ul *UserlogService) GetGlobalEvents(ctx context.Context) (map[string]json.RawMessage, error) {
-	_, span := tracer.Start(ctx, "GetGlobalEvents")
+	_, span := ul.tracer.Start(ctx, "GetGlobalEvents")
 	defer span.End()
 	out := make(map[string]json.RawMessage)
 
@@ -318,7 +316,7 @@ func (ul *UserlogService) GetGlobalEvents(ctx context.Context) (map[string]json.
 
 // DeleteGlobalEvents will delete the specified event
 func (ul *UserlogService) DeleteGlobalEvents(ctx context.Context, evnames []string) error {
-	_, span := tracer.Start(ctx, "DeleteGlobalEvents")
+	_, span := ul.tracer.Start(ctx, "DeleteGlobalEvents")
 	defer span.End()
 	return ul.alterGlobalEvents(ctx, func(evs map[string]json.RawMessage) error {
 		for _, name := range evnames {
@@ -406,7 +404,7 @@ func (ul *UserlogService) alterUserEventList(userid string, alter func([]string)
 }
 
 func (ul *UserlogService) alterGlobalEvents(ctx context.Context, alter func(map[string]json.RawMessage) error) error {
-	_, span := tracer.Start(ctx, "alterGlobalEvents")
+	_, span := ul.tracer.Start(ctx, "alterGlobalEvents")
 	defer span.End()
 	evs, err := ul.GetGlobalEvents(ctx)
 	if err != nil && err != store.ErrNotFound {