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Monorepo for Tangled
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import ( "context" "database/sql" "encoding/json" "errors" "fmt" "log/slog" "net" "net/http" "net/url" "sync" "time"
comatproto "github.com/bluesky-social/indigo/api/atproto" "github.com/bluesky-social/indigo/atproto/syntax" indigoxrpc "github.com/bluesky-social/indigo/xrpc" "tangled.org/core/api/tangled" avmodels "tangled.org/core/appview/models" "tangled.org/core/eventconsumer" "tangled.org/core/log" "tangled.org/core/rbac" "tangled.org/core/spindle/db" "tangled.org/core/spindle/git" "tangled.org/core/spindle/models" "tangled.org/core/spindle/netguard" "tangled.org/core/tapc" "tangled.org/core/tid" "tangled.org/core/workflow")
const ( maxPendingPerRepo = 64 pendingCollabTTL = 10 * time.Minute)
// blobs are fetched from user controlled PDSes so protect our transport// from dialing internal addressesvar guardedBlobClient = &http.Client{ Transport: &http.Transport{ DialContext: (&net.Dialer{ Timeout: 30 * time.Second, KeepAlive: 30 * time.Second, Control: netguard.RefuseSpecialPurposeAddrs, }).DialContext, ForceAttemptHTTP2: true, MaxIdleConns: 100, IdleConnTimeout: 90 * time.Second, TLSHandshakeTimeout: 10 * time.Second, ExpectContinueTimeout: 1 * time.Second, },}
type pendingCollabEvent struct { evt *tapc.RecordEventData at time.Time}
type Tap struct { logger *slog.Logger spindle *Spindle tap tapc.Client pendingMu sync.Mutex pendingCollabs map[syntax.DID][]pendingCollabEvent}
func NewTapClient(s *Spindle) *Tap { return &Tap{ logger: log.SubLogger(s.l, "tapclient"), spindle: s, tap: tapc.NewClient(s.cfg.Server.Tap.Url, s.cfg.Server.Tap.AdminPassword), pendingCollabs: make(map[syntax.DID][]pendingCollabEvent), }}
func (t *Tap) AddOwnerDIDs(ctx context.Context, dids []syntax.DID) error { if len(dids) == 0 { return nil } return t.tap.AddRepos(ctx, dids)}
func (t *Tap) Start(connCtx context.Context) { go t.tap.Connect(connCtx, &tapc.SimpleIndexer{ EventHandler: t.processEvent, ConnectHandler: t.onConnect, }) go t.purgePendingCollabsLoop(t.spindle.rootCtx)}
func (t *Tap) onConnect(ctx context.Context) { t.spindle.declareTapInterest(ctx)}
func (t *Tap) processEvent(ctx context.Context, evt tapc.Event) error { if evt.Type != tapc.EvtRecord || evt.Record == nil { return nil } switch evt.Record.Collection.String() { case tangled.RepoNSID: return t.processRepo(ctx, evt.Record) case tangled.RepoCollaboratorNSID: return t.processCollaborator(ctx, evt.Record) } return nil}
func (t *Tap) processRepo(ctx context.Context, evt *tapc.RecordEventData) error { l := t.logger.With("collection", tangled.RepoNSID, "did", evt.Did, "rkey", evt.Rkey)
ownerDid := evt.Did rkey := evt.Rkey
switch evt.Action { case tapc.RecordCreateAction, tapc.RecordUpdateAction: record := tangled.Repo{} if err := json.Unmarshal(evt.Record, &record); err != nil { l.Warn("skipping invalid repo record", "err", err) return nil }
hostname := t.spindle.cfg.Server.Hostname prior, priorErr := t.spindle.db.GetRepoByOwnerRkey(ownerDid, rkey) knownRepo := priorErr == nil
if record.Spindle == nil || *record.Spindle != hostname { if knownRepo { l.Info("tearing down repo reassigned from this spindle", "newSpindle", record.Spindle) return t.teardownRepo(l, prior, ownerDid, rkey) } return nil }
if record.RepoDid == nil || *record.RepoDid == "" { l.Warn("skipping repo record without repoDid") return nil } repoDid, err := syntax.ParseDID(*record.RepoDid) if err != nil { l.Warn("skipping repo record with malformed repoDid", "value", *record.RepoDid, "err", err) return nil }
isMember, err := t.spindle.e.IsSpindleMember(ownerDid.String(), rbac.ThisServer) if err != nil { return fmt.Errorf("checking spindle membership: %w", err) } if !isMember { l.Warn("rejecting repo record: owner is not a spindle member", "owner", ownerDid) return nil }
// check if this repo DID is already owned by someone else existingRepo, err := t.spindle.db.GetRepoByDid(repoDid) if err == nil { if existingRepo.Owner != ownerDid { l.Warn("rejecting repo record: repoDid already registered by another owner", "repoDid", repoDid, "existingOwner", existingRepo.Owner, "newOwner", ownerDid) return nil } } else if !errors.Is(err, sql.ErrNoRows) { return fmt.Errorf("lookup existing repo by DID: %w", err) }
if err := t.spindle.e.AddRepo(ownerDid.String(), rbac.ThisServer, repoDid.String()); err != nil { l.Error("failed to add repo policy", "err", err) return fmt.Errorf("add repo policy: %w", err) }
src := eventconsumer.NewKnotSource(record.Knot) t.spindle.ks.AddSource(t.spindle.rootCtx, src)
repo := db.Repo{ Knot: record.Knot, Owner: ownerDid, Rkey: rkey, RepoDid: repoDid, CreatedAt: record.CreatedAt, }
if err := t.spindle.db.AddRepo(repo); err != nil { l.Error("failed to add repo row", "err", err) return fmt.Errorf("add repo: %w", err) }
// setup sparse sync repoCloneUri := t.spindle.newRepoCloneUrl(repo.Knot, repo.RepoDid) repoPath := t.spindle.newRepoPath(repo.RepoDid) if err := git.SparseSyncGitRepo(ctx, repoCloneUri, repoPath, ""); err != nil { return fmt.Errorf("setting up sparse-clone git repo: %w", err) }
legacyName := "" if record.Name != nil { legacyName = *record.Name } migrateLegacyRepoSecrets(ctx, t.spindle.db, t.spindle.vault, l, ownerDid, legacyName, rkey, repoDid) migrateLegacyRepoCasbin(ctx, t.spindle.db, t.spindle.e, l, ownerDid, legacyName, rkey, repoDid)
if removed, err := t.spindle.db.CollapseRepoSiblings(ownerDid, repoDid); err != nil { l.Warn("collapse rename siblings failed", "err", err) } else if removed > 0 { l.Info("collapsed rename leftovers", "owner", ownerDid, "repo_did", repoDid, "removed", removed) }
if e := t.spindle.embedTap; e == nil || !e.closed.Load() { if err := t.tap.AddRepos(ctx, []syntax.DID{ownerDid}); err != nil { l.Warn("tap AddRepos rejected", "did", ownerDid, "err", err) } } t.spindle.jc.AddDid(ownerDid.String())
t.drainPendingCollabs(ctx, repoDid)
case tapc.RecordDeleteAction: repo, err := t.spindle.db.GetRepoByOwnerRkey(ownerDid, rkey) if err != nil { l.Info("skipping delete for unknown repo") return nil } return t.teardownRepo(l, repo, ownerDid, rkey) } return nil}
func (t *Tap) teardownRepo(l *slog.Logger, repo *db.Repo, ownerDid syntax.DID, rkey syntax.RecordKey) error { if repo.RepoDid != "" { collabs, err := t.spindle.db.ListCollaboratorsByRepoDid(repo.RepoDid) if err != nil { l.Error("failed to list collaborators for cleanup", "err", err) return fmt.Errorf("list collaborators: %w", err) } for _, c := range collabs { if err := t.spindle.e.RemoveCollaborator(c.Subject.String(), rbac.ThisServer, repo.RepoDid.String()); err != nil { l.Error("failed to remove collaborator policy", "subject", c.Subject, "err", err) return fmt.Errorf("remove collaborator policy: %w", err) } } if err := t.spindle.db.DeleteRepoCollaboratorsByRepoDid(repo.RepoDid); err != nil { l.Error("failed to clear collaborator rows", "err", err) return err } if err := t.spindle.e.RemoveRepo(ownerDid.String(), rbac.ThisServer, repo.RepoDid.String()); err != nil { l.Error("failed to remove repo policy", "err", err) return fmt.Errorf("remove repo policy: %w", err) } } if err := t.spindle.db.DeleteRepoByOwnerRkey(ownerDid, rkey); err != nil { l.Error("failed to delete repo row", "err", err) return fmt.Errorf("delete repo row: %w", err) } // TODO: clear sparse-synced git repo return nil}
func (t *Tap) processCollaborator(ctx context.Context, evt *tapc.RecordEventData) error { l := t.logger.With("collection", tangled.RepoCollaboratorNSID, "did", evt.Did, "rkey", evt.Rkey)
switch evt.Action { case tapc.RecordCreateAction, tapc.RecordUpdateAction: record := tangled.RepoCollaborator{} if err := json.Unmarshal(evt.Record, &record); err != nil { l.Warn("skipping invalid collaborator record", "err", err) return nil }
actor := evt.Did rkey := evt.Rkey
subjectDid, err := syntax.ParseDID(record.Subject) if err != nil { l.Info("skipping collaborator with malformed subject DID", "subject", record.Subject, "err", err) return nil } if _, err := t.spindle.res.ResolveIdent(ctx, subjectDid.String()); err != nil { l.Info("skipping unresolvable collaborator subject", "subject", subjectDid, "err", err) return nil }
repoRefDid, err := syntax.ParseDID(record.Repo) if err != nil { l.Info("skipping collaborator with non-DID repo ref", "repo", record.Repo, "err", err) return nil } repo, lookupErr := t.spindle.db.GetRepoByDid(repoRefDid) if errors.Is(lookupErr, sql.ErrNoRows) { t.bufferCollab(repoRefDid, evt) l.Info("buffering collaborator until repo arrives", "repo", repoRefDid) return nil } if lookupErr != nil { return fmt.Errorf("lookup repo %s: %w", repoRefDid, lookupErr) } repoDid := repo.RepoDid ownerDid := repo.Owner
if actor != ownerDid { l.Info("rejecting collaborator with non-owner actor", "actor", actor, "owner", ownerDid) return nil }
ok, err := t.spindle.e.IsCollaboratorInviteAllowed(ownerDid.String(), rbac.ThisServer, repoDid.String()) if err != nil { l.Error("invite permission check failed", "err", err) return fmt.Errorf("invite check: %w", err) } if !ok { l.Info("rejecting collaborator invite", "owner", ownerDid, "repo", repoDid) return nil }
prior, priorErr := t.spindle.db.GetRepoCollaborator(actor, rkey) staleSubject := priorErr == nil && (prior.Subject != subjectDid || prior.RepoDid != repoDid)
if err := t.spindle.e.AddCollaborator(subjectDid.String(), rbac.ThisServer, repoDid.String()); err != nil { l.Error("failed to add collaborator policy", "err", err) return fmt.Errorf("add collaborator policy: %w", err) } if staleSubject { if err := t.spindle.e.RemoveCollaborator(prior.Subject.String(), rbac.ThisServer, prior.RepoDid.String()); err != nil { l.Error("failed to remove stale collaborator policy", "err", err) return fmt.Errorf("remove stale collaborator: %w", err) } } if err := t.spindle.db.AddRepoCollaborator(db.RepoCollaborator{ OwnerDid: actor, Rkey: rkey, Subject: subjectDid, RepoDid: repoDid, }); err != nil { l.Error("failed to persist collaborator row", "err", err) return fmt.Errorf("track collaborator: %w", err) }
case tapc.RecordDeleteAction: actor := evt.Did rkey := evt.Rkey
tracked, err := t.spindle.db.GetRepoCollaborator(actor, rkey) if err != nil { l.Info("skipping delete for unknown collaborator record") return nil } if err := t.spindle.e.RemoveCollaborator(tracked.Subject.String(), rbac.ThisServer, tracked.RepoDid.String()); err != nil { l.Error("failed to remove collaborator policy", "err", err) return fmt.Errorf("remove collaborator policy: %w", err) } if err := t.spindle.db.DeleteRepoCollaborator(actor, rkey); err != nil { l.Error("failed to delete collaborator row", "err", err) return fmt.Errorf("delete collaborator row: %w", err) } } return nil}
func (s *Spindle) processPull(ctx context.Context, evt *tapc.RecordEventData) error { l := s.l.With("component", "ingester", "collection", evt.Collection, "did", evt.Did, "rkey", evt.Rkey)
// only listen to live events if !evt.Live { l.Info("skipping backfill event", "event", evt.AtUri()) return nil }
switch evt.Action { case tapc.RecordCreateAction, tapc.RecordUpdateAction: record := tangled.RepoPull{} if err := json.Unmarshal(evt.Record, &record); err != nil { l.Error("invalid record", "err", err) return fmt.Errorf("parsing record: %w", err) }
action := workflow.PullRequestActionOpened if evt.Action == tapc.RecordUpdateAction { action = workflow.PullRequestActionSynchronize }
// for open/synchronize the event author is the pull record author. pullAuthor := evt.Did.String() return s.triggerPullRequestPipeline(ctx, l, pullAuthor, pullAuthor, evt.Rkey.String(), &record, action) case tapc.RecordDeleteAction: // no-op } return nil}
// processPullStatus reacts to sh.tangled.repo.pull.status records, which record// pull request state transitions (reopen/close/merge). Unlike the pull record// itself, the status record only references the pull by AT-URI, so we resolve// and fetch the pull record before building the trigger.func (s *Spindle) processPullStatus(ctx context.Context, evt *tapc.RecordEventData) error { l := s.l.With("component", "ingester", "collection", evt.Collection, "did", evt.Did, "rkey", evt.Rkey)
// only listen to live events if !evt.Live { l.Info("skipping backfill event", "event", evt.AtUri()) return nil }
// status records are append-only; only creation is meaningful if evt.Action != tapc.RecordCreateAction { return nil }
record := tangled.RepoPullStatus{} if err := json.Unmarshal(evt.Record, &record); err != nil { l.Error("invalid record", "err", err) return fmt.Errorf("parsing record: %w", err) }
action, ok := pullStatusAction(record.Status) if !ok { l.Info("ignoring pull status record: unknown status", "status", record.Status) return nil }
pullUri, err := syntax.ParseATURI(record.Pull) if err != nil { l.Error("invalid pull at-uri in status record", "pull", record.Pull, "err", err) return nil } if pullUri.Collection().String() != tangled.RepoPullNSID { l.Info("ignoring pull status record: subject is not a pull", "collection", pullUri.Collection()) return nil }
pullDid := pullUri.Authority().String() pullRkey := pullUri.RecordKey().String() actorDid := evt.Did.String()
pull, err := s.fetchPullRecord(ctx, pullDid, pullRkey) if err != nil { l.Error("failed to fetch pull record for status event", "pull", record.Pull, "err", err) return fmt.Errorf("fetch pull record: %w", err) }
l = l.With("pull", record.Pull, "action", action, "actor", actorDid) return s.triggerPullRequestPipeline(ctx, l, actorDid, pullDid, pullRkey, pull, action)}
// pullStatusAction maps a sh.tangled.repo.pull.status variant to the// corresponding pull_request trigger action. A status.open record is only ever// written on reopen (initial creation emits no status record), so it maps to// "reopened".func pullStatusAction(status string) (string, bool) { switch status { case tangled.RepoPullStatusOpen: return workflow.PullRequestActionReopened, true case tangled.RepoPullStatusClosed: return workflow.PullRequestActionClosed, true case tangled.RepoPullStatusMerged: return workflow.PullRequestActionMerged, true default: return "", false }}
// fetchPullRecord retrieves a sh.tangled.repo.pull record from its author's PDS.func (s *Spindle) fetchPullRecord(ctx context.Context, did, rkey string) (*tangled.RepoPull, error) { ident, err := s.res.ResolveIdent(ctx, did) if err != nil || ident.Handle.IsInvalidHandle() { return nil, fmt.Errorf("failed to resolve pull owner: %w", err) }
client := &indigoxrpc.Client{Host: ident.PDSEndpoint()} resp, err := comatproto.RepoGetRecord(ctx, client, "", tangled.RepoPullNSID, did, rkey) if err != nil { return nil, fmt.Errorf("fetching pull record: %w", err) }
pull, ok := resp.Value.Val.(*tangled.RepoPull) if !ok { return nil, fmt.Errorf("record %s/%s is not a pull record", did, rkey) } return pull, nil}
// isPullTriggerAuthorized reports whether a pull_request pipeline may be// triggered on repoDid. The pull author must always have push access to the// target repo; the event actor must either be the pull author or also have push// access. For open/synchronize the actor and pull author are the same DID, so// this reduces to the pull author's push check.func (s *Spindle) isPullTriggerAuthorized(eventDid, pullDid, repoDid string) (bool, error) { pullHasPush, err := s.e.IsPushAllowed(pullDid, rbac.ThisServer, repoDid) if err != nil || !pullHasPush { return false, err }
if eventDid == pullDid { return true, nil }
return s.e.IsPushAllowed(eventDid, rbac.ThisServer, repoDid)}
// triggerPullRequestPipeline builds and runs a pull_request-triggered pipeline// for the given pull record. eventDid is the DID that authored the firehose// event (the actor); pullDid/pullRkey identify the sh.tangled.repo.pull record// (used to fetch the latest submission and as the pull author for the// authorization check); action is the pull_request lifecycle action carried// into the trigger metadata for `types` matching.func (s *Spindle) triggerPullRequestPipeline(ctx context.Context, l *slog.Logger, eventDid, pullDid, pullRkey string, record *tangled.RepoPull, action string) error { // ignore legacy records if record.Target == nil { l.Info("ignoring pull record: target repo is nil") return nil }
// ignore patch-based and fork-based PRs if record.Source == nil || record.Source.Repo != nil { l.Info("ignoring pull record: not a branch-based pull request") return nil }
// skip if target repo is unknown repo, err := s.db.GetRepoByDid(syntax.DID(record.Target.Repo)) if err != nil { l.Warn("target repo is not ingested yet", "repo", record.Target.Repo, "err", err) return fmt.Errorf("target repo is unknown") }
// authorize the actor against the target repo allowed, err := s.isPullTriggerAuthorized(eventDid, pullDid, repo.RepoDid.String()) if err != nil { return fmt.Errorf("authorizing pull-triggered pipeline: %w", err) } if !allowed { l.Warn("rejecting pull-triggered pipeline: actor is not authorized", "actor", eventDid, "author", pullDid, "repo", repo.RepoDid) return nil }
latestSubmission, err := s.fetchLatestSubmission(ctx, pullDid, pullRkey, record) if err != nil { return err } sourceSha := latestSubmission.SourceRev
scheme := "https" if s.cfg.Server.Dev { scheme = "http" } client := &indigoxrpc.Client{Host: fmt.Sprintf("%s://%s", scheme, repo.Knot)}
// fetch current default branch defaultBranch, _ := func(repo syntax.DID) (string, error) { defaultBranchOut, err := tangled.RepoGetDefaultBranch(ctx, client, repo.String()) if err != nil { return "", err } return defaultBranchOut.Name, nil }(repo.RepoDid)
compiler := workflow.Compiler{ Trigger: tangled.Pipeline_TriggerMetadata{ Kind: string(workflow.TriggerKindPullRequest), PullRequest: &tangled.Pipeline_PullRequestTriggerData{ Action: &action, SourceBranch: record.Source.Branch, SourceSha: sourceSha, TargetBranch: record.Target.Branch, }, Repo: &tangled.Pipeline_TriggerRepo{ Did: repo.Owner.String(), Knot: repo.Knot, Repo: (*string)(&repo.Rkey), RepoDid: (*string)(&repo.RepoDid), DefaultBranch: defaultBranch, }, }, }
repoUri := s.newRepoCloneUrl(repo.Knot, repo.RepoDid) repoPath := s.newRepoPath(repo.RepoDid)
// load workflow definitions from rev (without spindle context) rawPipeline, err := s.loadPipeline(ctx, repoUri, repoPath, sourceSha) if err != nil { // don't retry l.Error("failed loading pipeline", "err", err) return nil } if len(rawPipeline) == 0 { l.Info("no workflow definition find for the repo. skipping the event") return nil } tpl := compiler.Compile(compiler.Parse(rawPipeline)) // TODO: pass compile error to workflow log for _, w := range compiler.Diagnostics.Errors { l.Error(w.String()) } for _, w := range compiler.Diagnostics.Warnings { l.Warn(w.String()) } if len(tpl.Workflows) == 0 { l.Info("no workflow matching trigger 'pull_request'. skipping the event") return nil }
pipelineId := models.PipelineId{ Knot: tpl.TriggerMetadata.Repo.Knot, Rkey: tid.TID(), } if err := s.db.CreatePipelineEvent(pipelineId.Rkey, tpl, s.n); err != nil { l.Error("failed to create pipeline event", "err", err) return nil } sourceRepo, err := s.resolvePipelineSourceRepo(ctx, tpl.TriggerMetadata) if err != nil { l.Error("failed resolving pipeline source repo", "err", err) return nil } err = s.processPipeline(repo.RepoDid, tpl, pipelineId, sourceRepo) if err != nil { // don't retry l.Error("failed processing pipeline", "err", err) return nil } return nil}
func (t *Tap) bufferCollab(repoDid syntax.DID, evt *tapc.RecordEventData) { t.pendingMu.Lock() defer t.pendingMu.Unlock() list := t.pendingCollabs[repoDid] list = append(list, pendingCollabEvent{evt: evt, at: time.Now()}) if len(list) > maxPendingPerRepo { list = list[len(list)-maxPendingPerRepo:] } t.pendingCollabs[repoDid] = list}
func (t *Tap) drainPendingCollabs(ctx context.Context, repoDid syntax.DID) { t.pendingMu.Lock() list := t.pendingCollabs[repoDid] delete(t.pendingCollabs, repoDid) t.pendingMu.Unlock() if len(list) == 0 { return } cutoff := time.Now().Add(-pendingCollabTTL) for _, p := range list { if p.at.Before(cutoff) { continue } if err := t.processCollaborator(ctx, p.evt); err != nil { t.logger.Warn("replaying buffered collaborator failed", "repo", repoDid, "rkey", p.evt.Rkey, "err", err) } }}
func (t *Tap) purgePendingCollabsLoop(ctx context.Context) { ticker := time.NewTicker(pendingCollabTTL / 2) defer ticker.Stop() for { select { case <-ctx.Done(): return case <-ticker.C: t.purgeStalePendingCollabs() } }}
func (t *Tap) purgeStalePendingCollabs() { cutoff := time.Now().Add(-pendingCollabTTL) t.pendingMu.Lock() defer t.pendingMu.Unlock() expired := 0 for did, list := range t.pendingCollabs { kept := list[:0] for _, p := range list { if !p.at.Before(cutoff) { kept = append(kept, p) } else { expired++ } } if len(kept) == 0 { delete(t.pendingCollabs, did) } else { t.pendingCollabs[did] = kept } } if expired > 0 { t.logger.Warn("expired buffered collaborator events without matching repo arrival", "count", expired, "ttl", pendingCollabTTL) }}
func (s *Spindle) fetchLatestSubmission(ctx context.Context, did, rkey string, record *tangled.RepoPull) (*avmodels.PullSubmission, error) { // resolve the PR owner's identity to fetch the blob from their PDS prOwnerIdent, err := s.res.ResolveIdent(ctx, did) if err != nil || prOwnerIdent.Handle.IsInvalidHandle() { return nil, fmt.Errorf("failed to resolve PR owner handle: %w", err) }
if len(record.Rounds) == 0 { return nil, fmt.Errorf("failed to fetch latest submission, no rounds in record") }
roundNumber := len(record.Rounds) - 1 round := record.Rounds[roundNumber]
// fetch the blob from the PR owner's PDS prOwnerPds := prOwnerIdent.PDSEndpoint() blobUrl, err := url.Parse(fmt.Sprintf("%s/xrpc/com.atproto.sync.getBlob", prOwnerPds)) if err != nil { return nil, fmt.Errorf("failed to construct blob URL: %w", err) } q := blobUrl.Query() q.Set("cid", round.PatchBlob.Ref.String()) q.Set("did", did) blobUrl.RawQuery = q.Encode()
req, err := http.NewRequestWithContext(ctx, http.MethodGet, blobUrl.String(), nil) if err != nil { return nil, fmt.Errorf("failed to create blob request: %w", err) } req.Header.Set("Content-Type", "application/json")
blobResp, err := guardedBlobClient.Do(req) if err != nil { return nil, fmt.Errorf("failed to fetch blob: %w", err) } defer blobResp.Body.Close()
latestSubmission, err := avmodels.PullSubmissionFromRecord(did, rkey, roundNumber, round, blobResp.Body) if err != nil { return nil, fmt.Errorf("failed to parse submission: %w", err) }
return latestSubmission, nil}