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Monorepo for Tangled forked from tangled.org/core
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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" "github.com/bluesky-social/jetstream/pkg/models" securejoin "github.com/cyphar/filepath-securejoin" "tangled.org/core/api/tangled" "tangled.org/core/knotserver/db" "tangled.org/core/knotserver/git" "tangled.org/core/log" "tangled.org/core/rbac" "tangled.org/core/workflow")
func (h *Knot) processPublicKey(ctx context.Context, event *models.Event) error { l := log.FromContext(ctx) raw := json.RawMessage(event.Commit.Record) did := event.Did
var record tangled.PublicKey if err := json.Unmarshal(raw, &record); err != nil { return fmt.Errorf("failed to unmarshal record: %w", err) }
pk := db.PublicKey{ Did: did, PublicKey: record, } if err := h.db.AddPublicKey(pk); err != nil { l.Error("failed to add public key", "error", err) return fmt.Errorf("failed to add public key: %w", err) } l.Info("added public key from firehose", "did", did) return nil}
func (h *Knot) processKnotMember(ctx context.Context, event *models.Event) error { l := log.FromContext(ctx) raw := json.RawMessage(event.Commit.Record) did := event.Did
var record tangled.KnotMember if err := json.Unmarshal(raw, &record); err != nil { return fmt.Errorf("failed to unmarshal record: %w", err) }
if record.Domain != h.c.Server.Hostname { l.Error("domain mismatch", "domain", record.Domain, "expected", h.c.Server.Hostname) return fmt.Errorf("domain mismatch: %s != %s", record.Domain, h.c.Server.Hostname) }
ok, err := h.e.E.Enforce(did, rbac.ThisServer, rbac.ThisServer, "server:invite") if err != nil || !ok { l.Error("failed to add member", "did", did) return fmt.Errorf("failed to enforce permissions: %w", err) }
if err := h.e.AddKnotMember(rbac.ThisServer, record.Subject); err != nil { l.Error("failed to add member", "error", err) return fmt.Errorf("failed to add member: %w", err) } l.Info("added member from firehose", "member", record.Subject)
if err := h.db.AddDid(record.Subject); err != nil { l.Error("failed to add did", "error", err) return fmt.Errorf("failed to add did: %w", err) } h.jc.AddDid(record.Subject)
if err := h.fetchAndAddKeys(ctx, record.Subject); err != nil { return fmt.Errorf("failed to fetch and add keys: %w", err) }
return nil}
func (h *Knot) processPull(ctx context.Context, event *models.Event) error { raw := json.RawMessage(event.Commit.Record) 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)
if record.Target == nil { return fmt.Errorf("ignoring pull record: target repo is nil") }
l = l.With("target_repo", record.Target.Repo) l = l.With("target_branch", record.Target.Branch)
if record.Source == nil { return fmt.Errorf("ignoring pull record: not a branch-based pull request") }
if record.Source.Repo != nil { return fmt.Errorf("ignoring pull record: fork based pull") }
repoAt, err := syntax.ParseATURI(record.Target.Repo) if err != nil { return fmt.Errorf("failed to parse ATURI: %w", err) }
// resolve this aturi to extract the repo record ident, err := h.resolver.ResolveIdent(ctx, repoAt.Authority().String()) if err != nil || ident.Handle.IsInvalidHandle() { return fmt.Errorf("failed to resolve handle: %w", err) }
xrpcc := xrpc.Client{ Host: ident.PDSEndpoint(), }
resp, err := comatproto.RepoGetRecord(ctx, &xrpcc, "", tangled.RepoNSID, repoAt.Authority().String(), repoAt.RecordKey().String()) if err != nil { return fmt.Errorf("failed to resolver repo: %w", err) }
repo := resp.Value.Val.(*tangled.Repo)
if repo.Knot != h.c.Server.Hostname { return fmt.Errorf("rejected pull record: not this knot, %s != %s", repo.Knot, h.c.Server.Hostname) }
didSlashRepo, err := securejoin.SecureJoin(ident.DID.String(), repo.Name) if err != nil { return fmt.Errorf("failed to construct relative repo path: %w", err) }
repoPath, err := securejoin.SecureJoin(h.c.Repo.ScanPath, didSlashRepo) if err != nil { return fmt.Errorf("failed to construct absolute repo path: %w", err) }
gr, err := git.Open(repoPath, record.Source.Sha) if err != nil { return fmt.Errorf("failed to open git repository: %w", err) }
workflowDir, err := gr.FileTree(ctx, workflow.WorkflowDir) if err != nil { return 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, }) }
trigger := tangled.Pipeline_PullRequestTriggerData{ Action: "create", SourceBranch: record.Source.Branch, SourceSha: record.Source.Sha, TargetBranch: record.Target.Branch, }
compiler := workflow.Compiler{ Trigger: tangled.Pipeline_TriggerMetadata{ Kind: string(workflow.TriggerKindPullRequest), PullRequest: &trigger, Repo: &tangled.Pipeline_TriggerRepo{ Did: ident.DID.String(), Knot: repo.Knot, Repo: repo.Name, }, }, }
cp := compiler.Compile(compiler.Parse(pipeline)) eventJson, err := json.Marshal(cp) if err != nil { return fmt.Errorf("failed to marshal pipeline event: %w", err) }
// do not run empty pipelines if cp.Workflows == nil { return nil }
ev := db.Event{ Rkey: TID(), Nsid: tangled.PipelineNSID, EventJson: string(eventJson), }
return h.db.InsertEvent(ev, h.n)}
// duplicated from add collaboratorfunc (h *Knot) processCollaborator(ctx context.Context, event *models.Event) error { raw := json.RawMessage(event.Commit.Record) did := event.Did
var record tangled.RepoCollaborator if err := json.Unmarshal(raw, &record); err != nil { return fmt.Errorf("failed to unmarshal record: %w", err) }
repoAt, err := syntax.ParseATURI(record.Repo) if err != nil { return err }
subjectId, err := h.resolver.ResolveIdent(ctx, record.Subject) if err != nil || subjectId.Handle.IsInvalidHandle() { return err }
// TODO: fix this for good, we need to fetch the record here unfortunately // resolve this aturi to extract the repo record owner, err := h.resolver.ResolveIdent(ctx, repoAt.Authority().String()) if err != nil || owner.Handle.IsInvalidHandle() { return fmt.Errorf("failed to resolve handle: %w", err) }
xrpcc := xrpc.Client{ Host: owner.PDSEndpoint(), }
resp, err := comatproto.RepoGetRecord(ctx, &xrpcc, "", tangled.RepoNSID, repoAt.Authority().String(), repoAt.RecordKey().String()) if err != nil { return err }
repo := resp.Value.Val.(*tangled.Repo) didSlashRepo, _ := securejoin.SecureJoin(owner.DID.String(), repo.Name)
// check perms for this user ok, err := h.e.IsCollaboratorInviteAllowed(did, rbac.ThisServer, didSlashRepo) if err != nil { return fmt.Errorf("failed to check permissions: %w", err) } if !ok { return fmt.Errorf("insufficient permissions: %s, %s, %s", did, "IsCollaboratorInviteAllowed", didSlashRepo) }
if err := h.db.AddDid(subjectId.DID.String()); err != nil { return err } h.jc.AddDid(subjectId.DID.String())
if err := h.e.AddCollaborator(subjectId.DID.String(), rbac.ThisServer, didSlashRepo); err != nil { return err }
return h.fetchAndAddKeys(ctx, subjectId.DID.String())}
func (h *Knot) fetchAndAddKeys(ctx context.Context, did string) error { l := log.FromContext(ctx)
keysEndpoint, err := url.JoinPath(h.c.AppViewEndpoint, "keys", did) if err != nil { l.Error("error building endpoint url", "did", did, "error", err.Error()) return fmt.Errorf("error building endpoint url: %w", err) }
resp, err := http.Get(keysEndpoint) if err != nil { l.Error("error getting keys", "did", did, "error", err) return fmt.Errorf("error getting keys: %w", err) } defer resp.Body.Close()
if resp.StatusCode == http.StatusNotFound { l.Info("no keys found for did", "did", did) return nil }
plaintext, err := io.ReadAll(resp.Body) if err != nil { l.Error("error reading response body", "error", err) return fmt.Errorf("error reading response body: %w", err) }
for key := range strings.SplitSeq(string(plaintext), "\n") { if key == "" { continue } pk := db.PublicKey{ Did: did, } pk.Key = key if err := h.db.AddPublicKey(pk); err != nil { l.Error("failed to add public key", "error", err) return fmt.Errorf("failed to add public key: %w", err) } } return nil}
func (h *Knot) processMessages(ctx context.Context, event *models.Event) error { if event.Kind != models.EventKindCommit { return nil }
var err error defer func() { eventTime := event.TimeUS lastTimeUs := eventTime + 1 if err := h.db.SaveLastTimeUs(lastTimeUs); err != nil { err = fmt.Errorf("(deferred) failed to save last time us: %w", err) } }()
switch event.Commit.Collection { case tangled.PublicKeyNSID: err = h.processPublicKey(ctx, event) case tangled.KnotMemberNSID: err = h.processKnotMember(ctx, event) case tangled.RepoPullNSID: err = h.processPull(ctx, event) case tangled.RepoCollaboratorNSID: err = h.processCollaborator(ctx, event) }
if err != nil { h.l.Debug("failed to process event", "nsid", event.Commit.Collection, "err", err) }
return nil}