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Monorepo for Tangled
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13 kB · 431 lines
Go
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import ( "context" "encoding/json" "fmt" "io" "net/http" "net/url" "path/filepath" "strings"
comatproto "github.com/bluesky-social/indigo/api/atproto" "github.com/bluesky-social/indigo/atproto/syntax" "github.com/bluesky-social/indigo/xrpc" jmodels "github.com/bluesky-social/jetstream/pkg/models" "tangled.org/core/api/tangled" "tangled.org/core/appview/models" "tangled.org/core/eventstream" "tangled.org/core/knotserver/db" "tangled.org/core/knotserver/git" knotxrpc "tangled.org/core/knotserver/xrpc" "tangled.org/core/log" "tangled.org/core/tid" "tangled.org/core/workflow")
func (h *Knot) processPublicKey(ctx context.Context, event *jmodels.Event) error { l := log.FromContext(ctx).With("handler", "processPublicKey", "did", event.Did, "rkey", event.Commit.RKey) did := syntax.DID(event.Did) rkey := syntax.RecordKey(event.Commit.RKey)
switch event.Commit.Operation { case jmodels.CommitOperationCreate, jmodels.CommitOperationUpdate: var record tangled.PublicKey if err := json.Unmarshal(json.RawMessage(event.Commit.Record), &record); err != nil { return fmt.Errorf("failed to unmarshal record: %w", err) }
pk := db.PublicKey{ Did: did, Rkey: rkey, PublicKey: record, } if err := h.db.UpsertPublicKey(pk); err != nil { return fmt.Errorf("failed to upsert public key: %w", err) } l.Info("upserted public key from firehose") case jmodels.CommitOperationDelete: if err := h.db.DeletePublicKeyByRkey(did, rkey); err != nil { return fmt.Errorf("failed to delete public key: %w", err) } l.Info("deleted public key from firehose") }
return nil}
// returns a repo path on disk if present, and error if nottype targetRepo struct { RepoPath string OwnerDid string RepoName string RepoDid string DefaultBranch string // default branch}
func (h *Knot) validatePullRecord(ctx context.Context, record *tangled.RepoPull) (*targetRepo, error) { if record.Target == nil { return nil, fmt.Errorf("ignoring pull record: target repo is nil") }
l := log.FromContext(ctx).With("handler", "validatePullRecord") l = l.With("target_repo", record.Target.Repo) l = l.With("target_branch", record.Target.Branch)
if record.Source == nil { return nil, fmt.Errorf("ignoring pull record: not a branch-based pull request") }
if record.Source.Repo != nil { return nil, fmt.Errorf("ignoring pull record: fork based pull") }
var repoPath, ownerDid, repoName, repoDid string switch { case strings.HasPrefix(record.Target.Repo, "did:"): repoDid = record.Target.Repo var lookupErr error repoPath, ownerDid, repoName, lookupErr = h.db.ResolveRepoDIDOnDisk(h.c.Repo.ScanPath, repoDid) if lookupErr != nil { return nil, fmt.Errorf("unknown target repo DID %s: %w", repoDid, lookupErr) }
case strings.Contains(record.Target.Repo, "/"): // TODO: get rid of this PDS fetch once all repos have DIDs repoAt, parseErr := syntax.ParseATURI(record.Target.Repo) if parseErr != nil { return nil, fmt.Errorf("failed to parse ATURI: %w", parseErr) }
ident, resolveErr := h.resolver.ResolveIdent(ctx, repoAt.Authority().String()) if resolveErr != nil || ident.Handle.IsInvalidHandle() { return nil, fmt.Errorf("failed to resolve handle: %w", resolveErr) }
xrpcc := xrpc.Client{ Host: ident.PDSEndpoint(), }
resp, getErr := comatproto.RepoGetRecord(ctx, &xrpcc, "", tangled.RepoNSID, repoAt.Authority().String(), repoAt.RecordKey().String()) if getErr != nil { return nil, fmt.Errorf("failed to resolve repo: %w", getErr) }
repo, ok := resp.Value.Val.(*tangled.Repo) if !ok { return nil, fmt.Errorf("record at %s is not a tangled.Repo", repoAt) }
if repo.Knot != h.c.Server.Hostname { return nil, fmt.Errorf("rejected pull record: not this knot, %s != %s", repo.Knot, h.c.Server.Hostname) }
ownerDid = ident.DID.String() repoName = repoAt.RecordKey().String()
repoDid, didErr := h.db.GetRepoDid(ownerDid, repoName) if didErr != nil { return nil, fmt.Errorf("failed to resolve repo DID for %s/%s: %w", ownerDid, repoName, didErr) }
var lookupErr error repoPath, _, _, lookupErr = h.db.ResolveRepoDIDOnDisk(h.c.Repo.ScanPath, repoDid) if lookupErr != nil { return nil, fmt.Errorf("failed to resolve repo on disk: %w", lookupErr) }
default: return nil, fmt.Errorf("ignoring pull record: target repo has unrecognized format: %s", record.Target.Repo) }
gr, err := git.Open(repoPath, record.Source.Branch) if err != nil { return nil, fmt.Errorf("failed to open git repository: %w", err) }
defaultBranch, _ := gr.FindMainBranch()
return &targetRepo{ RepoPath: repoPath, OwnerDid: ownerDid, RepoName: repoName, RepoDid: repoDid, DefaultBranch: defaultBranch, }, nil}
func (h *Knot) fetchLatestSubmission(ctx context.Context, did, rkey string, record *tangled.RepoPull) (*models.PullSubmission, error) { // resolve the PR owner's identity to fetch the blob from their PDS prOwnerIdent, err := h.resolver.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 := http.DefaultClient.Do(req) if err != nil { return nil, fmt.Errorf("failed to fetch blob: %w", err) } defer blobResp.Body.Close()
blob := io.ReadCloser(blobResp.Body) latestSubmission, err := models.PullSubmissionFromRecord(did, rkey, roundNumber, round, &blob) if err != nil { return nil, fmt.Errorf("failed to parse submission: %w", err) }
return latestSubmission, nil}
func (h *Knot) discoverWorkflows(ctx context.Context, repoPath, sha string) (workflow.RawPipeline, error) { gr, err := git.Open(repoPath, sha) if err != nil { return nil, fmt.Errorf("failed to open git repository: %w", err) }
workflowDir, err := gr.FileTree(ctx, workflow.WorkflowDir) if err != nil { return nil, fmt.Errorf("failed to open workflow directory: %w", err) }
var pipeline workflow.RawPipeline for _, e := range workflowDir { if !e.IsFile() { continue }
fpath := filepath.Join(workflow.WorkflowDir, e.Name) contents, err := gr.RawContent(fpath) if err != nil { continue }
pipeline = append(pipeline, workflow.RawWorkflow{ Name: e.Name, Contents: contents, }) }
return pipeline, nil}
func (h *Knot) compilePipeline(ctx context.Context, targetRepo *targetRepo, sourceBranch, sourceSha, targetBranch string, rawPipeline workflow.RawPipeline) tangled.Pipeline { l := log.FromContext(ctx)
trigger := tangled.Pipeline_PullRequestTriggerData{ Action: "create", SourceBranch: sourceBranch, SourceSha: sourceSha, TargetBranch: targetBranch, }
compiler := workflow.Compiler{ Trigger: tangled.Pipeline_TriggerMetadata{ Kind: string(workflow.TriggerKindPullRequest), PullRequest: &trigger, Repo: &tangled.Pipeline_TriggerRepo{ Knot: h.c.Server.Hostname, RepoDid: &targetRepo.RepoDid, Did: targetRepo.OwnerDid, Repo: &targetRepo.RepoName, DefaultBranch: targetRepo.DefaultBranch, }, }, }
l.Info("raw", "raw", rawPipeline) parsed := compiler.Parse(rawPipeline) l.Info("parsed", "parsed", parsed) compiled := compiler.Compile(parsed)
l.Info("compiler diagnostics", "diagnostics", compiler.Diagnostics)
return compiled}
func (h *Knot) processPull(ctx context.Context, event *jmodels.Event) error { raw := json.RawMessage(event.Commit.Record) rkey := event.Commit.RKey did := event.Did
var record tangled.RepoPull if err := json.Unmarshal(raw, &record); err != nil { return fmt.Errorf("failed to unmarshal record: %w", err) }
l := log.FromContext(ctx) l = l.With("handler", "processPull") l = l.With("did", did)
l.Info("validating pull record") targetRepo, err := h.validatePullRecord(ctx, &record) if err != nil { l.Warn("pull record did not validate, skipping...") return err }
l = l.With("target_repo", record.Target.Repo) l = l.With("target_branch", record.Target.Branch)
l.Info("fetching latest submission") latestSubmission, err := h.fetchLatestSubmission(ctx, did, rkey, &record) if err != nil { return err }
sha := latestSubmission.SourceRev if sha == "" { return fmt.Errorf("failed to extract source SHA from pull submission") } l = l.With("sha", sha)
l.Info("discovering workflows", "repo_path", targetRepo.RepoPath) pipeline, err := h.discoverWorkflows(ctx, targetRepo.RepoPath, sha) if err != nil { return err }
l.Info("compiling pipeline", "workflow_count", len(pipeline)) cp := h.compilePipeline(ctx, targetRepo, record.Source.Branch, sha, record.Target.Branch, pipeline)
// do not run empty pipelines if cp.Workflows == nil { l.Info("skipping empty pipeline") return nil }
l.Info("marshaling pipeline event") eventJson, err := json.Marshal(cp) if err != nil { return fmt.Errorf("failed to marshal pipeline event: %w", err) }
ev := eventstream.Event{ Rkey: tid.TID(), Nsid: tangled.PipelineNSID, EventJson: eventJson, }
l.Info("inserting pipeline event") return h.db.InsertEvent(ev, h.n)}
func (h *Knot) processRepo(ctx context.Context, event *jmodels.Event) error { l := log.FromContext(ctx).With("handler", "processRepo", "did", event.Did, "rkey", event.Commit.RKey)
rkey := strings.TrimSuffix(strings.TrimSpace(event.Commit.RKey), ".git") if rkey == "" { return nil }
if event.Commit.Operation == jmodels.CommitOperationDelete { return nil }
if event.Commit.Operation != jmodels.CommitOperationCreate && event.Commit.Operation != jmodels.CommitOperationUpdate { return nil }
raw := json.RawMessage(event.Commit.Record) var record tangled.Repo if err := json.Unmarshal(raw, &record); err != nil { return fmt.Errorf("failed to unmarshal repo record: %w", err) }
if record.Knot != h.c.Server.Hostname { return nil } if record.RepoDid == nil || *record.RepoDid == "" { l.Info("skipping repo event without repoDid") return nil } repoDid := *record.RepoDid
if err := knotxrpc.ValidateRepoName(rkey); err != nil { l.Warn("skipping repo event with invalid rkey", "repoDid", repoDid, "rkey", rkey, "err", err) return nil }
ownerDid, _, lookupErr := h.db.GetRepoKeyOwner(repoDid) if lookupErr != nil { l.Info("skipping repo event for unknown repoDid", "repoDid", repoDid) return nil } if ownerDid != event.Did { l.Warn("repo event author does not own repoDid", "repoDid", repoDid, "author", event.Did) return nil }
alias := db.RepoAlias{ OwnerDid: event.Did, Rkey: rkey, RepoDid: repoDid, Rev: event.Commit.Rev, } if err := h.db.UpsertRepoAlias(alias); err != nil { l.Warn("failed to upsert repo alias", "err", err) return nil }
l.Info("recorded repo alias", "repoDid", repoDid, "rkey", rkey, "rev", event.Commit.Rev) return nil}
func (h *Knot) processMessages(ctx context.Context, event *jmodels.Event) error { var err error switch event.Kind { case jmodels.EventKindIdentity: err = h.resolver.InvalidateIdent(ctx, event.Did) case jmodels.EventKindCommit: switch event.Commit.Collection { case tangled.PublicKeyNSID: err = h.processPublicKey(ctx, event) case tangled.RepoNSID: err = h.processRepo(ctx, event) case tangled.RepoPullNSID: err = h.processPull(ctx, event) } default: return nil }
if err != nil { args := []any{"kind", event.Kind, "err", err} if event.Kind == jmodels.EventKindCommit { args = append(args, "nsid", event.Commit.Collection, "did", event.Did, "rkey", event.Commit.RKey) } h.l.Warn("failed to process event, skipping", args...) }
lastTimeUs := event.TimeUS + 1 if saveErr := h.db.SaveLastTimeUs(lastTimeUs); saveErr != nil { h.l.Error("failed to save cursor", "err", saveErr) }
return nil}