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import ( "context" "database/sql" "errors" "fmt" "log/slog" "net/http" "slices" "strings" "time"
"tangled.org/core/api/tangled" "tangled.org/core/appview" "tangled.org/core/appview/bsky" "tangled.org/core/appview/cache" "tangled.org/core/appview/cloudflare" "tangled.org/core/appview/codesearch" "tangled.org/core/appview/config" "tangled.org/core/appview/db" "tangled.org/core/appview/email" "tangled.org/core/appview/indexer" "tangled.org/core/appview/knotacl" "tangled.org/core/appview/knotcompat" "tangled.org/core/appview/mentions" "tangled.org/core/appview/models" "tangled.org/core/appview/notify" dbnotify "tangled.org/core/appview/notify/db" emaildispatch "tangled.org/core/appview/notify/email" lognotify "tangled.org/core/appview/notify/logging" phnotify "tangled.org/core/appview/notify/posthog" "tangled.org/core/appview/oauth" "tangled.org/core/appview/pages" pipelinessh "tangled.org/core/appview/pipelines/ssh" "tangled.org/core/appview/reporesolver" "tangled.org/core/consts" "tangled.org/core/eventconsumer" "tangled.org/core/idresolver" "tangled.org/core/jetstream" "tangled.org/core/log" tlog "tangled.org/core/log" "tangled.org/core/orm" "tangled.org/core/rbac" "tangled.org/core/repoverify" xrpcclient "tangled.org/core/xrpc/xrpcclient"
comatproto "github.com/bluesky-social/indigo/api/atproto" "github.com/bluesky-social/indigo/atproto/atclient" "github.com/bluesky-social/indigo/atproto/syntax" lexutil "github.com/bluesky-social/indigo/lex/util" "github.com/bluesky-social/indigo/xrpc"
"github.com/go-chi/chi/v5" "github.com/posthog/posthog-go")
type State struct { db *db.DB notifier notify.Notifier indexer *indexer.Indexer oauth *oauth.OAuth enforcer *rbac.Enforcer pages *pages.Pages idResolver *idresolver.Resolver rdb *cache.Cache mentionsResolver *mentions.Resolver posthog posthog.Client jc *jetstream.JetstreamClient config *config.Config repoResolver *reporesolver.RepoResolver aclService *knotacl.Service knotstream *eventconsumer.Consumer logger *slog.Logger cfClient *cloudflare.Client codesearch *codesearch.CodeSearch}
func Make(ctx context.Context, config *config.Config) (*State, error) { logger := tlog.FromContext(ctx)
d, err := db.Make(ctx, config.Core.DbPath) if err != nil { return nil, fmt.Errorf("failed to create db: %w", err) }
indexer := indexer.New(log.SubLogger(logger, "indexer"), d) err = indexer.Init(ctx) if err != nil { return nil, fmt.Errorf("failed to create indexer: %w", err) }
enforcer, err := rbac.NewEnforcer(config.Core.DbPath) if err != nil { return nil, fmt.Errorf("failed to create enforcer: %w", err) }
res, err := idresolver.RedisResolver(config.Redis.ToURL(), config.Plc.PLCURL) if err != nil { logger.Error("failed to create redis resolver", "err", err) res = idresolver.DefaultResolver(config.Plc.PLCURL) }
var rdb *cache.Cache if config.Redis.Addr != "" { rdb = cache.New(config.Redis.Addr) }
posthog, err := posthog.NewWithConfig(config.Posthog.ApiKey, posthog.Config{Endpoint: config.Posthog.Endpoint}) if err != nil { return nil, fmt.Errorf("failed to create posthog client: %w", err) }
pages := pages.NewPages(config, res, d, rdb, log.SubLogger(logger, "pages")) knotcompat.UseNativeLatch(knotacl.NewLatch(d, log.SubLogger(logger, "knotacl-latch"))) aclService := knotacl.NewService(enforcer, d, config.Core.Dev, log.SubLogger(logger, "knotacl")) oauth, err := oauth.New(config, posthog, d, enforcer, aclService, res, log.SubLogger(logger, "oauth")) if err != nil { return nil, fmt.Errorf("failed to start oauth handler: %w", err) } repoResolver := reporesolver.New(config, aclService, d, rdb)
mentionsResolver := mentions.New(config, res, d, log.SubLogger(logger, "mentionsResolver"))
jc, err := jetstream.NewJetstreamClient( config.Jetstream.Endpoint, "appview", []string{ tangled.ActorProfileNSID, tangled.FeedStarNSID, tangled.FeedReactionNSID, tangled.FeedCommentNSID, tangled.GraphFollowNSID, tangled.GraphVouchNSID, tangled.KnotMemberNSID, tangled.KnotNSID, tangled.LabelDefinitionNSID, tangled.LabelOpNSID, tangled.PublicKeyNSID, tangled.RepoArtifactNSID, tangled.RepoIssueCommentNSID, tangled.RepoIssueNSID, tangled.RepoIssueStateNSID, tangled.RepoNSID, tangled.RepoPullNSID, tangled.RepoPullStatusNSID, tangled.RepoPullCommentNSID, tangled.SpindleMemberNSID, tangled.SpindleNSID, tangled.StringNSID, }, nil, tlog.SubLogger(logger, "jetstream"), d, false,
// in-memory filter is inapplicable to appview so // we'll never log dids anyway. false, ) if err != nil { return nil, fmt.Errorf("failed to create jetstream client: %w", err) }
if err := BackfillDefaultDefs(d, res, config.Label.DefaultLabelDefs); err != nil { return nil, fmt.Errorf("failed to backfill default label defs: %w", err) }
var notifiers []notify.Notifier
// Always add the database notifier notifiers = append(notifiers, dbnotify.NewDatabaseNotifier(d, res))
// Add other notifiers in production only if !config.Core.Dev { notifiers = append(notifiers, phnotify.NewPosthogNotifier(posthog)) } notifiers = append(notifiers, indexer)
// webhook delivery now lives in spindle; the appview no longer fans out // repo events to a webhook notifier.
notifier := notify.NewMergedNotifier(notifiers) notifier = lognotify.NewLoggingNotifier(notifier, tlog.SubLogger(logger, "notify"))
ingester := appview.Ingester{ Ctx: ctx, Db: d, Enforcer: enforcer, Acl: aclService, IdResolver: res, Cache: rdb, Config: config, Logger: log.SubLogger(logger, "ingester"), MentionsResolver: mentionsResolver, Notifier: notifier, Verifier: repoverify.New(res, config.Core.Dev), } err = jc.StartJetstream(ctx, ingester.Ingest()) if err != nil { return nil, fmt.Errorf("failed to start jetstream watcher: %w", err) }
go ingester.SweepPendingVerifications() go ingester.StartPendingStateReconciler()
if config.Resend.ApiKey != "" { dispatcher := emaildispatch.NewDispatcher(d, config.Resend, config.Core.BaseUrl(), res, tlog.SubLogger(logger, "email-dispatcher"), config.Core.Dev) go dispatcher.Start(ctx) }
var cfClient *cloudflare.Client if config.Cloudflare.ApiToken != "" { cfClient, err = cloudflare.New(config) if err != nil { logger.Warn("failed to create cloudflare client, sites upload will be disabled", "err", err) cfClient = nil } }
knotstream, err := Knotstream(ctx, config, d, aclService, enforcer, posthog, notifier, cfClient) if err != nil { return nil, fmt.Errorf("failed to start knotstream consumer: %w", err) } knotstream.Start(ctx)
state := &State{ db: d, notifier: notifier, indexer: indexer, oauth: oauth, enforcer: enforcer, pages: pages, idResolver: res, rdb: rdb, mentionsResolver: mentionsResolver, posthog: posthog, jc: jc, config: config, repoResolver: repoResolver, aclService: aclService, knotstream: knotstream, logger: logger, cfClient: cfClient, codesearch: &codesearch.CodeSearch{Host: config.CodeSearch.ZoektUrl}, }
// fetch initial bluesky posts if configured go fetchBskyPosts(ctx, res, config, d, logger)
return state, nil}
func (s *State) Close() error { // other close up logic goes here return s.db.Close()}
func (s *State) NewSSHServer() *pipelinessh.Server { return pipelinessh.New(s.db, s.config, log.SubLogger(s.logger, "pipelinessh"))}
func (s *State) SecurityTxt(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "text/plain") w.Header().Set("Cache-Control", "public, max-age=86400") // one day
securityTxt := `Contact: mailto:security@tangled.orgPreferred-Languages: enCanonical: https://tangled.org/.well-known/security.txtExpires: 2030-01-01T21:59:00.000Z` w.Write([]byte(securityTxt))}
func (s *State) RobotsTxt(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "text/plain") w.Header().Set("Cache-Control", "public, max-age=86400") // one day
robotsTxt := `# Hello, Tanglers!User-agent: *Allow: /Disallow: /*/*/settingsDisallow: /settingsDisallow: /*/*/compareDisallow: /*/*/forkDisallow: /searchDisallow: /*/*/search
Crawl-delay: 1` w.Write([]byte(robotsTxt))}
func (s *State) TermsOfService(w http.ResponseWriter, r *http.Request) { s.pages.TermsOfService(w, pages.TermsOfServiceParams{ BaseParams: pages.BaseParamsFromContext(r.Context()), })}
func (s *State) PrivacyPolicy(w http.ResponseWriter, r *http.Request) { s.pages.PrivacyPolicy(w, pages.PrivacyPolicyParams{ BaseParams: pages.BaseParamsFromContext(r.Context()), })}
func (s *State) Brand(w http.ResponseWriter, r *http.Request) { s.pages.Brand(w, pages.BrandParams{ BaseParams: pages.BaseParamsFromContext(r.Context()), })}
func (s *State) UpgradeBanner(w http.ResponseWriter, r *http.Request) { user := s.oauth.GetMultiAccountUser(r) if user == nil { return }
l := s.logger.With("handler", "UpgradeBanner") l = l.With("did", user.Did)
regs, err := db.GetRegistrations( s.db, orm.FilterEq("did", user.Did), orm.FilterEq("needs_upgrade", 1), ) if err != nil { l.Error("non-fatal: failed to get registrations", "err", err) }
spindles, err := db.GetSpindles( r.Context(), s.db, orm.FilterEq("owner", user.Did), orm.FilterEq("needs_upgrade", 1), ) if err != nil { l.Error("non-fatal: failed to get spindles", "err", err) }
if regs == nil && spindles == nil { return }
s.pages.UpgradeBanner(w, pages.UpgradeBannerParams{ Registrations: regs, Spindles: spindles, })}
func (s *State) NewsletterSignup(w http.ResponseWriter, r *http.Request) { // target is echoed back from the form via hx-vals so the response span's // id matches the form's hx-target. Fallback keeps the handler useful if // a caller forgets to send it. target := strings.TrimSpace(r.FormValue("target")) if target == "" { target = "home" }
w.Header().Set("Content-Type", "text/html")
emailAddr := strings.TrimSpace(r.FormValue("email")) if !email.IsValidEmail(emailAddr) { s.pages.NewsletterResponse(w, pages.NewsletterResponseParams{ Id: target, Error: "Invalid email address.", }) return }
// For logged-in users, persist the signup locally so the widget stays // hidden across devices. The DB row is the render-time source of truth; // Resend still owns the mailing list itself. if user := s.oauth.GetMultiAccountUser(r); user != nil { if err := db.UpsertNewsletterPref(s.db, user.Did, db.NewsletterStatusSubscribed, emailAddr); err != nil { s.logger.Error("failed to persist newsletter preference", "did", user.Did, "err", err) } }
if s.config.Resend.ApiKey != "" && s.config.Resend.NewsletterSegmentId != "" { go func() { if err := email.AddNewsletterContact(s.config.Resend.ApiKey, s.config.Resend.NewsletterSegmentId, emailAddr); err != nil { s.logger.Error("failed to add newsletter contact", "error", err) } }() } else { s.logger.Error( "failed to add newsletter contact, missing resend config", "isKeyPresent", s.config.Resend.ApiKey != "", "isSegmentIdPresent", s.config.Resend.NewsletterSegmentId != "", "emailAddr", emailAddr, ) }
s.pages.NewsletterResponse(w, pages.NewsletterResponseParams{Id: target})}
// NewsletterDismiss records that a logged-in user has dismissed the newsletter// widget so it stays hidden across their devices. Anonymous callers get a 204// with no DB write — localStorage handles the per-browser fallback.func (s *State) NewsletterDismiss(w http.ResponseWriter, r *http.Request) { user := s.oauth.GetMultiAccountUser(r) if user == nil { w.WriteHeader(http.StatusNoContent) return }
if err := db.UpsertNewsletterPref(s.db, user.Did, db.NewsletterStatusDismissed, ""); err != nil { s.logger.Error("failed to persist newsletter dismissal", "did", user.Did, "err", err) } w.WriteHeader(http.StatusNoContent)}
func (s *State) Keys(w http.ResponseWriter, r *http.Request) { user := chi.URLParam(r, "user") user = strings.TrimPrefix(user, "@") user = strings.TrimSuffix(user, ".keys")
if user == "" { w.WriteHeader(http.StatusBadRequest) return }
id, err := s.idResolver.ResolveIdent(r.Context(), user) if err != nil { w.WriteHeader(http.StatusInternalServerError) return }
pubKeys, err := db.GetPublicKeysForDid(s.db, id.DID.String()) if err != nil { s.logger.Error("failed to get public keys", "err", err) http.Error(w, "failed to get public keys", http.StatusInternalServerError) return }
if len(pubKeys) == 0 { w.WriteHeader(http.StatusNoContent) return }
for _, k := range pubKeys { key := strings.TrimRight(k.Key, "\n") fmt.Fprintln(w, key) }}
func (s *State) NewRepo(w http.ResponseWriter, r *http.Request) { switch r.Method { case http.MethodGet: user := s.oauth.GetMultiAccountUser(r) knots := s.aclService.KnotsForUser(r.Context(), user.Did)
spindles, err := s.enforcer.GetSpindlesForUser(user.Did) if err != nil { s.logger.Error("failed to fetch spindles", "err", err) }
s.pages.NewRepo(w, pages.NewRepoParams{ BaseParams: pages.BaseParamsFromContext(r.Context()), Knots: knots, Spindles: spindles, })
case http.MethodPost: l := s.logger.With("handler", "NewRepo")
user := s.oauth.GetMultiAccountUser(r) l = l.With("did", user.Did)
// form validation domain := r.FormValue("domain") if domain == "" { s.pages.Notice(w, "repo", "Invalid form submission—missing knot domain.") return } l = l.With("knot", domain)
repoName := r.FormValue("name") if repoName == "" { s.pages.Notice(w, "repo", "Repository name cannot be empty.") return }
if err := models.ValidateRepoName(repoName); err != nil { s.pages.Notice(w, "repo", err.Error()) return } repoName = models.StripGitExt(repoName) rkey := strings.ToLower(repoName) l = l.With("repoName", repoName, "rkey", rkey)
defaultBranch := r.FormValue("branch") if defaultBranch == "" { defaultBranch = "main" } l = l.With("defaultBranch", defaultBranch)
description := r.FormValue("description") if len([]rune(description)) > 140 { s.pages.Notice(w, "repo", "Description must be 140 characters or fewer.") return }
// optional spindle selection; validate the user is a member if provided spindle := r.FormValue("spindle") if spindle != "" { validSpindles, err := s.enforcer.GetSpindlesForUser(user.Did) if err != nil { l.Error("failed to fetch spindles", "err", err) s.pages.Notice(w, "repo", "Failed to configure spindle. Try again later.") return } if !slices.Contains(validSpindles, spindle) { s.pages.Notice(w, "repo", "Invalid spindle selection.") return } } l = l.With("spindle", spindle)
// ACL validation if !s.aclService.IsRepoCreateAllowed(r.Context(), domain, user.Did) { l.Info("unauthorized") s.pages.Notice(w, "repo", "You do not have permission to create a repo in this knot.") return }
// Check for existing repos existingRepo, err := db.GetRepo( s.db, orm.FilterEq("did", user.Did), orm.FilterEq("rkey", rkey), ) if err == nil && existingRepo != nil { l.Info("repo exists") s.pages.Notice(w, "repo", fmt.Sprintf("You already have a repository by this name on %s", existingRepo.Knot)) return }
atpClient, err := s.oauth.AuthorizedClient(r) if err != nil { l.Error("failed to get authorized client", "err", err) s.pages.Notice(w, "repo", "Failed to authorize. Try again later.") return }
if rkeyOccupied(r.Context(), atpClient, user.Did, rkey) { l.Info("rkey occupied by prior rename alias") s.pages.Notice(w, "repo", fmt.Sprintf("The name %q still has a record on your PDS from a prior rename. Pick a different name, or delete at://%s/%s/%s first.", rkey, user.Did, tangled.RepoNSID, rkey)) return }
client, err := s.oauth.ServiceClient( r, oauth.WithService(domain), oauth.WithLxm(tangled.RepoCreateNSID), oauth.WithDev(s.config.Core.Dev), ) if err != nil { l.Error("service auth failed", "err", err) s.pages.Notice(w, "repo", "Failed to authenticate. Please log out and log back in again.") return }
input := &tangled.RepoCreate_Input{ Rkey: rkey, Name: rkey, DefaultBranch: &defaultBranch, } createResp, err := tangled.RepoCreate( r.Context(), client, input, ) if xrpcerr := xrpcclient.HandleXrpcErr(err); xrpcerr != nil { l.Error("failed to call XRPC repo.create", "xrpcerr", xrpcerr, "err", err) s.pages.Notice(w, "repo", err.Error()) return }
var repoDid string if createResp != nil && createResp.RepoDid != nil { repoDid = *createResp.RepoDid } if repoDid == "" { l.Error("knot returned empty repo DID") s.pages.Notice(w, "repo", "Knot failed to mint a repo DID. The knot may need to be upgraded.") return }
repo := &models.Repo{ Did: user.Did, Name: repoName, Knot: domain, Rkey: rkey, Description: description, Spindle: spindle, Created: time.Now(), Labels: s.config.Label.DefaultLabelDefs, RepoDid: repoDid, } record := repo.AsRecord()
cleanupKnot := func() { go func() { delays := []time.Duration{0, 2 * time.Second, 5 * time.Second} for attempt, delay := range delays { time.Sleep(delay) deleteClient, dErr := s.oauth.ServiceClient( r, oauth.WithService(domain), oauth.WithLxm(tangled.RepoDeleteNSID), oauth.WithDev(s.config.Core.Dev), ) if dErr != nil { l.Error("failed to create delete client for knot cleanup", "attempt", attempt+1, "err", dErr) continue } ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second) if dErr := tangled.RepoDelete(ctx, deleteClient, &tangled.RepoDelete_Input{ Repo: repoDid, Did: &user.Did, Name: &rkey, Rkey: &rkey, }); dErr != nil { cancel() l.Error("failed to clean up repo on knot after rollback", "attempt", attempt+1, "err", dErr) continue } cancel() l.Info("successfully cleaned up repo on knot after rollback", "attempt", attempt+1) return } l.Error("exhausted retries for knot cleanup, repo may be orphaned", "did", user.Did, "repo", repoName, "knot", domain) }() }
_, err = comatproto.RepoCreateRecord(r.Context(), atpClient, &comatproto.RepoCreateRecord_Input{ Collection: tangled.RepoNSID, Repo: user.Did, Rkey: &rkey, Record: &lexutil.LexiconTypeDecoder{ Val: &record, }, }) if err != nil { l.Info("PDS write failed", "err", err) cleanupKnot() if rkeyOccupied(r.Context(), atpClient, user.Did, rkey) { s.pages.Notice(w, "repo", fmt.Sprintf("You already have a repository named %q.", rkey)) } else { s.pages.Notice(w, "repo", "Failed to announce repository creation.") } return }
aturi := fmt.Sprintf("at://%s/%s/%s", user.Did, tangled.RepoNSID, rkey) l = l.With("aturi", aturi) l.Info("wrote to PDS")
tx, err := s.db.BeginTx(r.Context(), nil) if err != nil { l.Info("txn failed", "err", err) s.pages.Notice(w, "repo", "Failed to save repository information.") return }
rollback := func() { err1 := tx.Rollback() err2 := s.enforcer.E.LoadPolicy() err3 := rollbackRecord(context.Background(), aturi, atpClient)
if errors.Is(err1, sql.ErrTxDone) { err1 = nil }
if errs := errors.Join(err1, err2, err3); errs != nil { l.Error("failed to rollback changes", "errs", errs) }
if aturi != "" { cleanupKnot() } } defer rollback()
err = db.AddRepo(tx, repo) if err != nil { l.Error("db write failed", "err", err) s.pages.Notice(w, "repo", "Failed to save repository information.") return }
rbacPath := repo.RepoIdentifier() err = s.enforcer.AddRepo(user.Did, domain, rbacPath) if err != nil { l.Error("acl setup failed", "err", err) s.pages.Notice(w, "repo", "Failed to set up repository permissions.") return }
err = tx.Commit() if err != nil { l.Error("txn commit failed", "err", err) http.Error(w, err.Error(), http.StatusInternalServerError) return }
err = s.enforcer.E.SavePolicy() if err != nil { l.Error("acl save failed", "err", err) http.Error(w, err.Error(), http.StatusInternalServerError) return }
aturi = ""
s.notifier.NewRepo(r.Context(), repo) switch { case repoDid != "": s.pages.HxLocation(w, fmt.Sprintf("/%s", repoDid)) default: handle := s.pages.DisplayHandle(r.Context(), user.Did) s.pages.HxLocation(w, fmt.Sprintf("/%s/%s", handle, rkey)) } }}
func rkeyOccupied(ctx context.Context, client *atclient.APIClient, did, rkey string) bool { probeCtx, cancel := context.WithTimeout(ctx, 10*time.Second) defer cancel() resp, err := comatproto.RepoGetRecord(probeCtx, client, "", tangled.RepoNSID, did, rkey) return err == nil && resp != nil}
// this is used to rollback changes made to the PDS//// it is a no-op if the provided ATURI is emptyfunc rollbackRecord(ctx context.Context, aturi string, client *atclient.APIClient) error { if aturi == "" { return nil }
parsed := syntax.ATURI(aturi)
collection := parsed.Collection().String() repo := parsed.Authority().String() rkey := parsed.RecordKey().String()
_, err := comatproto.RepoDeleteRecord(ctx, client, &comatproto.RepoDeleteRecord_Input{ Collection: collection, Repo: repo, Rkey: rkey, }) return err}
func BackfillDefaultDefs(e db.Execer, r *idresolver.Resolver, defaults []string) error { defaultLabels, err := db.GetLabelDefinitions(e, orm.FilterIn("at_uri", defaults)) if err != nil { return err } // already present if len(defaultLabels) == len(defaults) { return nil }
labelDefs, err := models.FetchLabelDefs(r, defaults) if err != nil { return err }
// Insert each label definition to the database for _, labelDef := range labelDefs { _, err = db.AddLabelDefinition(e, &labelDef) if err != nil { return fmt.Errorf("failed to add label definition %s: %v", labelDef.Name, err) } }
return nil}
func fetchBskyPosts(ctx context.Context, res *idresolver.Resolver, config *config.Config, d *db.DB, logger *slog.Logger) { resolved, err := res.ResolveIdent(context.Background(), consts.TangledDid) if err != nil { logger.Error("failed to resolve tangled.org DID", "err", err) return }
pdsEndpoint := resolved.PDSEndpoint() if pdsEndpoint == "" { logger.Error("no PDS endpoint found for tangled.sh DID") return }
session, err := oauth.CreateAppPasswordSession(res, config.Core.AppPassword, consts.TangledDid, logger) if err != nil { logger.Error("failed to create appassword session... skipping fetch", "err", err) return }
l := log.SubLogger(logger, "bluesky")
ticker := time.NewTicker(config.Bluesky.UpdateInterval) defer ticker.Stop()
for { // refresh session if necessary if !session.IsValid() { l.Debug("access token expired, refreshing session") if err := session.RefreshSession(); err != nil { l.Error("failed to refresh session, stopping bluesky updater", "err", err) return } l.Debug("session refreshed") }
// make client client := xrpc.Client{ Auth: &xrpc.AuthInfo{ AccessJwt: session.AccessJwt, Did: session.Did, }, Host: session.PdsEndpoint, }
posts, _, err := bsky.FetchPosts(ctx, &client, 20, "") if err != nil { l.Error("failed to fetch bluesky posts", "err", err) } else if err := db.InsertBlueskyPosts(d, posts); err != nil { l.Error("failed to insert bluesky posts", "err", err) } else { l.Info("inserted bluesky posts", "count", len(posts)) }
select { case <-ticker.C: case <-ctx.Done(): l.Info("stopping bluesky updater") return } }}