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Monorepo for Tangled tangled.org
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import ( "context" "encoding/json" "fmt" "log/slog" "net/http" "time"
comatproto "github.com/bluesky-social/indigo/api/atproto" "github.com/bluesky-social/indigo/atproto/syntax" indigoxrpc "github.com/bluesky-social/indigo/xrpc" jmodels "github.com/bluesky-social/jetstream/pkg/models" "tangled.org/core/api/tangled" deldb "tangled.org/core/deliberi/db" models "tangled.org/core/deliberi/models" "tangled.org/core/idresolver" js "tangled.org/core/jetstream")
type Ingester struct { db *deldb.DB recipients recipientResolver jc *js.JetstreamClient idResolver *idresolver.Resolver logger *slog.Logger}
var ingestCollections = []string{ tangled.RepoNSID, tangled.RepoIssueNSID, tangled.RepoPullNSID, tangled.FeedCommentNSID, tangled.FeedStarNSID, tangled.GraphFollowNSID,}
func NewIngester(database *deldb.DB, recipients recipientResolver, idRes *idresolver.Resolver, endpoint, ident string, logger *slog.Logger) (*Ingester, error) { jc, err := js.NewJetstreamClient(endpoint, ident, ingestCollections, nil, logger, database, false, false) if err != nil { return nil, fmt.Errorf("creating jetstream client: %w", err) } return &Ingester{ db: database, recipients: recipients, jc: jc, idResolver: idRes, logger: logger, }, nil}
func (i *Ingester) Run(ctx context.Context) error { return i.jc.StartJetstream(ctx, i.process)}
func (i *Ingester) process(ctx context.Context, e *jmodels.Event) error { if e.Kind != jmodels.EventKindCommit || e.Commit == nil { return nil } if e.Commit.Operation != jmodels.CommitOperationCreate && e.Commit.Operation != jmodels.CommitOperationUpdate { return nil }
actorDid := e.Did entityAt := fmt.Sprintf("at://%s/%s/%s", e.Did, e.Commit.Collection, e.Commit.RKey)
switch e.Commit.Collection { case tangled.RepoNSID: var rec tangled.Repo if err := json.Unmarshal(e.Commit.Record, &rec); err != nil { i.logger.Warn("decoding repo record", "err", err, "uri", entityAt) return nil } ownerDid := e.Did repoDid := ownerDid name := "" if rec.Name != nil { name = *rec.Name } if rec.RepoDid != nil && *rec.RepoDid != "" { repoDid = *rec.RepoDid } if err := deldb.PutRepoName(i.db, repoDid, ownerDid, name); err != nil { i.logger.Warn("caching repo name", "err", err, "repoDid", repoDid, "ownerDid", ownerDid) }
case tangled.RepoIssueNSID: var rec tangled.RepoIssue if err := json.Unmarshal(e.Commit.Record, &rec); err != nil { i.logger.Warn("decoding issue record", "err", err, "uri", entityAt) return nil } if err := deldb.PutEntityTitle(i.db, entityAt, rec.Title, rec.Repo); err != nil { i.logger.Warn("caching entity title", "err", err, "uri", entityAt) } i.notifyEntity(ctx, actorDid, entityAt, entityAt, rec.Repo, models.NotificationTypeIssueCreated, rec.Title, rec.Mentions, "sh.tangled.repo.issue")
case tangled.RepoPullNSID: var rec tangled.RepoPull if err := json.Unmarshal(e.Commit.Record, &rec); err != nil { i.logger.Warn("decoding pull record", "err", err, "uri", entityAt) return nil } repoDid := "" if rec.Target != nil { repoDid = rec.Target.Repo } if err := deldb.PutEntityTitle(i.db, entityAt, rec.Title, repoDid); err != nil { i.logger.Warn("caching entity title", "err", err, "uri", entityAt) } i.notifyEntity(ctx, actorDid, entityAt, entityAt, repoDid, models.NotificationTypePullCreated, rec.Title, rec.Mentions, "sh.tangled.repo.pull")
case tangled.FeedCommentNSID: var rec tangled.FeedComment if err := json.Unmarshal(e.Commit.Record, &rec); err != nil { i.logger.Warn("decoding comment record", "err", err, "uri", entityAt) return nil } if rec.Subject == nil { return nil } subjectUri := rec.Subject.Uri collection := syntax.ATURI(subjectUri).Collection().String() var t models.NotificationType switch collection { case tangled.RepoIssueNSID: t = models.NotificationTypeIssueCommented case tangled.RepoPullNSID: t = models.NotificationTypePullCommented default: return nil } // comments carry no mentions field. title, repoDid := i.hydrateEntity(ctx, subjectUri, collection) i.notifyEntity(ctx, actorDid, entityAt, subjectUri, repoDid, t, title, nil, collection)
case tangled.FeedStarNSID: var rec tangled.FeedStar if err := json.Unmarshal(e.Commit.Record, &rec); err != nil { i.logger.Warn("decoding star record", "err", err, "uri", entityAt) return nil } if rec.Subject == nil || rec.Subject.FeedStar_Repo == nil { return nil } repoDid := rec.Subject.FeedStar_Repo.Did recipientDid := i.hydrateRepoOwner(ctx, repoDid) if recipientDid == "" { i.logger.Warn("star: could not resolve repo owner, skipping notification", "repoDid", repoDid) return nil } // stars notify the repo owner directly, no fanout. i.notifyOne(ctx, recipientDid, actorDid, entityAt, "", repoDid, models.NotificationTypeRepoStarred, "")
case tangled.GraphFollowNSID: var rec tangled.GraphFollow if err := json.Unmarshal(e.Commit.Record, &rec); err != nil { i.logger.Warn("decoding follow record", "err", err, "uri", entityAt) return nil } if rec.Subject == "" { return nil } i.notifyOne(ctx, rec.Subject, actorDid, entityAt, "", "", models.NotificationTypeFollowed, "") }
return nil}
func (i *Ingester) notifyEntity(ctx context.Context, actorDid, sourceAt, entityAt, repoDid string, t models.NotificationType, title string, mentions []string, collection string) { seen := make(map[string]struct{})
// bobbin matches subjects exactly, so ask at both levels. var subscribers []string for _, subject := range []string{entityAt, repoDid} { if subject == "" { continue } dids, err := i.recipients.ListRecipients(ctx, subject, collection) if err != nil { i.logger.Warn("listing recipients", "err", err, "subject", subject) continue } subscribers = append(subscribers, dids...) }
for _, dids := range [][]string{subscribers, mentions} { for _, did := range dids { if _, ok := seen[did]; ok { continue } seen[did] = struct{}{} i.deliver(did, actorDid, sourceAt, entityAt, repoDid, t, title) } }}
// hydrateRepoOwner reads the repo cache, falling back to bobbin on a miss so// stars on repos the ingester never saw still notify their owner. The resolved// mapping is cached, so the cache fills in as repos are starred rather than// needing a backfill.func (i *Ingester) hydrateRepoOwner(ctx context.Context, repoDid string) string { if owner := deldb.GetRepoOwner(i.db, repoDid); owner != "" { return owner } if i.recipients == nil { return "" }
owner, name, err := i.recipients.RepoOwner(ctx, repoDid) if err != nil { i.logger.Warn("resolving repo owner", "err", err, "repoDid", repoDid) return "" } if owner == "" { return "" }
// a nameless record must not blank out a name we already cached. if name == "" { name = deldb.GetRepoName(i.db, repoDid) } if err := deldb.PutRepoName(i.db, repoDid, owner, name); err != nil { i.logger.Warn("caching repo owner", "err", err, "repoDid", repoDid) } return owner}
// hydrateEntity reads the entity cache, falling back to the parent's pds on a// miss so comments on entities the ingester never saw still resolve.func (i *Ingester) hydrateEntity(ctx context.Context, uri, collection string) (title, repoDid string) { title = deldb.GetEntityTitle(i.db, uri) repoDid = deldb.GetEntityRepo(i.db, uri) if repoDid != "" || i.idResolver == nil { return title, repoDid }
fetchedTitle, fetchedRepoDid, err := i.fetchEntity(ctx, uri, collection) if err != nil { i.logger.Warn("hydrating parent entity", "err", err, "uri", uri) return title, repoDid } if title == "" { title = fetchedTitle } repoDid = fetchedRepoDid if err := deldb.PutEntityTitle(i.db, uri, title, repoDid); err != nil { i.logger.Warn("caching hydrated entity", "err", err, "uri", uri) } return title, repoDid}
func (i *Ingester) fetchEntity(ctx context.Context, uri, collection string) (string, string, error) { at := syntax.ATURI(uri) ident, err := i.idResolver.ResolveIdent(ctx, at.Authority().String()) if err != nil { return "", "", fmt.Errorf("resolving %s: %w", at.Authority(), err) }
xc := &indigoxrpc.Client{ Host: ident.PDSEndpoint(), Client: &http.Client{Timeout: 10 * time.Second}, } out, err := comatproto.RepoGetRecord(ctx, xc, "", collection, ident.DID.String(), at.RecordKey().String()) if err != nil { return "", "", fmt.Errorf("getting record: %w", err) } if out == nil || out.Value == nil { return "", "", fmt.Errorf("record has no value") } raw, err := out.Value.MarshalJSON() if err != nil { return "", "", fmt.Errorf("re-encoding record: %w", err) }
switch collection { case tangled.RepoIssueNSID: var rec tangled.RepoIssue if err := json.Unmarshal(raw, &rec); err != nil { return "", "", fmt.Errorf("decoding issue: %w", err) } return rec.Title, rec.Repo, nil case tangled.RepoPullNSID: var rec tangled.RepoPull if err := json.Unmarshal(raw, &rec); err != nil { return "", "", fmt.Errorf("decoding pull: %w", err) } if rec.Target == nil { return rec.Title, "", nil } return rec.Title, rec.Target.Repo, nil } return "", "", fmt.Errorf("unsupported collection %s", collection)}
func (i *Ingester) notifyOne(ctx context.Context, recipientDid, actorDid, sourceAt, entityAt, repoDid string, t models.NotificationType, title string) { i.deliver(recipientDid, actorDid, sourceAt, entityAt, repoDid, t, title)}
func (i *Ingester) deliver(recipientDid, actorDid, sourceAt, entityAt, repoDid string, t models.NotificationType, title string) { if recipientDid == "" || recipientDid == actorDid { return }
prefs, err := deldb.GetNotificationPreference(i.db, recipientDid) if err != nil { i.logger.Warn("loading prefs", "err", err, "recipient", recipientDid) return } if !prefs.ShouldNotify(t) { return }
n := &models.Notification{ RecipientDid: recipientDid, AtUri: sourceAt, Type: t, ActorDid: actorDid, RepoDid: repoDid, EntityAt: entityAt, EntityTitle: title, } if err := deldb.CreateNotification(i.db, n); err != nil { i.logger.Warn("creating notification", "err", err, "recipient", recipientDid, "uri", sourceAt) }}