forked from
tangled.org/core
Monorepo for Tangled
appview: smarter pds rewrites per req
Lewis: May this revision serve well! <lewis@tangled.org>
author
Lewis
committer
Tangled
date
(May 12, 2026, 9:38 PM +0300)
commit
ba18ec20
ba18ec20d332069db4e1c187f28191fb0d9ef2ed
parent
21212008
2121200827b05743538f14e5b986e5a8d6ba446b
change-id
lksulkuu
lksulkuuqnlmowspxqnktsnywznmqkxs
+79
-12
+18
appview/db/migration.go
+18
appview/db/migration.go
···
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return migrations, nil
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}
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+
func HasPendingPdsRecordMigration(ctx context.Context, e Execer, user syntax.DID) (bool, error) {
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+
var exists bool
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err := e.QueryRowContext(ctx,
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+
`select exists(
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select 1 from pds_migration
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where did = ?
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and status = 'pending'
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and retry_after < ?
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)`,
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user,
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+
time.Now().Unix(),
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).Scan(&exists)
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if err != nil {
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return false, err
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}
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return exists, nil
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}
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+
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func EnqueuePdsRecordMigration(ctx context.Context, e Execer, name string, did syntax.DID, collection syntax.NSID, rkey syntax.RecordKey) error {
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_, err := e.ExecContext(ctx,
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`insert into pds_migration (name, did, collection, rkey)
+42
-9
appview/migration/migration.go
+42
-9
appview/migration/migration.go
···
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6
"log/slog"
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7
"net/http"
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8
"strings"
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+
"sync"
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"time"
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"github.com/bluesky-social/indigo/atproto/atclient"
···
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"tangled.org/core/appview/oauth"
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)
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+
const maxConcurrentMigrations = 8
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+
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type Migration struct {
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-
db *db.DB
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-
oauth *oauth.OAuth
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-
dir identity.Directory
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-
logger *slog.Logger
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+
db *db.DB
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+
oauth *oauth.OAuth
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dir identity.Directory
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logger *slog.Logger
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inflight sync.Map
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sem chan struct{}
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}
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func NewMigration(db *db.DB, oauth *oauth.OAuth, dir identity.Directory, logger *slog.Logger) *Migration {
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return &Migration{
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db, oauth, dir, logger,
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db: db,
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oauth: oauth,
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dir: dir,
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logger: logger,
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sem: make(chan struct{}, maxConcurrentMigrations),
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}
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}
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···
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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defer next.ServeHTTP(w, r)
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-
client, err := s.oauth.AuthorizedClient(r)
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-
if err != nil {
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did := s.oauth.GetDidFromCookie(r)
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if did == "" {
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return
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}
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+
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hasPending, err := db.HasPendingPdsRecordMigration(r.Context(), s.db, did)
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if err != nil || !hasPending {
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return
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}
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+
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if _, loaded := s.inflight.LoadOrStore(did, struct{}{}); loaded {
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return
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}
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+
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select {
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case s.sem <- struct{}{}:
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default:
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s.inflight.Delete(did)
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return
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}
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-
if client.AccountDID == nil {
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+
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client, err := s.oauth.AuthorizedClient(r)
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if err != nil || client.AccountDID == nil {
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<-s.sem
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s.inflight.Delete(did)
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return
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}
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-
go s.runPendingMigrations(context.Background(), *client.AccountDID, client)
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go func() {
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defer s.inflight.Delete(did)
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defer func() { <-s.sem }()
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s.runPendingMigrations(context.Background(), *client.AccountDID, client)
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}()
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})
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}
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+16
appview/oauth/oauth.go
+16
appview/oauth/oauth.go
···
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return ""
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}
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+
func (o *OAuth) GetDidFromCookie(r *http.Request) syntax.DID {
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userSession, err := o.SessStore.Get(r, SessionName)
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if err != nil || userSession.IsNew {
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return ""
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}
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d, ok := userSession.Values[SessionDid].(string)
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if !ok {
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return ""
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}
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parsed, err := syntax.ParseDID(d)
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if err != nil {
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return ""
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}
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return parsed
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}
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+
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func (o *OAuth) AuthorizedClient(r *http.Request) (*atclient.APIClient, error) {
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session, err := o.ResumeSession(r)
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if err != nil {
+3
-3
appview/state/router.go
+3
-3
appview/state/router.go
···
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"tangled.org/core/appview/labels"
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"tangled.org/core/appview/metrics"
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"tangled.org/core/appview/middleware"
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// "tangled.org/core/appview/migration"
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+
"tangled.org/core/appview/migration"
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"tangled.org/core/appview/notifications"
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"tangled.org/core/appview/pipelines"
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"tangled.org/core/appview/pulls"
···
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router.Use(metrics.Middleware)
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-
// m := migration.NewMigration(s.db, s.oauth, s.idResolver.Directory(), s.logger)
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// router.Use(m.BackgroundMigrationMiddleware)
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m := migration.NewMigration(s.db, s.oauth, s.idResolver.Directory(), s.logger)
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router.Use(m.BackgroundMigrationMiddleware)
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router.Get("/pwa-manifest.json", s.WebAppManifest)
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router.Get("/robots.txt", s.RobotsTxt)