mathiasandClaude Opus 5.5
f4636c7ef0
New brainfs PutRegular (create or replace), CreateRegular (create only), AppendRegular, Remove and RealParent: missing parents created one component at a time through the root, every existing component a real directory, new files created with O_EXCL and confirmed before writing. brain_write, promote/reject (O_EXCL create, source kept on refusal), StampProvenanceFile, BuildWingIndex, RebuildIndex, AppendLog and the tunnel candidate log use them; provenance.ApplyFile removed. Fixes #188. Refs #158. Adversarial review: BLOCKED, BLOCKED, PASS. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Mathias <mthbqv@gmail.com>
76 lines
2.2 KiB
Go
76 lines
2.2 KiB
Go
package api
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import (
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"fmt"
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"path/filepath"
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"github.com/mathiasbq/hyperguild/ingestion/internal/brainfs"
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"github.com/mathiasbq/hyperguild/ingestion/internal/provenance"
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)
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// StampProvenance applies server-owned provenance (hyperguild#145) to note
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// content. See package provenance for the rule; an error means the stamped
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// note would not read back as stamped, and the write must be refused.
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func StampProvenance(content, origin, writtenBy string) (string, error) {
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return provenance.Apply(content, provenance.Stamp{Origin: origin, WrittenBy: writtenBy})
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}
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// StampProvenanceFile applies StampProvenance to a brain-relative note path,
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// read and rewritten through the brain root (hyperguild#158).
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func StampProvenanceFile(brainDir, relPath, origin, writtenBy string) error {
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rel, _, err := resolveWithin(brainDir, relPath)
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if err != nil {
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return err
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}
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bfs, err := brainfs.Open(brainDir)
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if err != nil {
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return fmt.Errorf("open brain: %w", err)
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}
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defer func() { _ = bfs.Close() }()
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b, err := bfs.ReadRegular(rel)
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if err != nil {
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return fmt.Errorf("read for provenance: %w", err)
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}
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out, err := provenance.Apply(string(b), provenance.Stamp{Origin: origin, WrittenBy: writtenBy})
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if err != nil {
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return err
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}
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if out == string(b) {
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return nil
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}
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if err := bfs.WriteRegular(rel, []byte(out)); err != nil {
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return fmt.Errorf("write provenance: %w", err)
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}
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return nil
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}
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// createBrainFile creates the file at abs (inside brainDir) through the
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// brain root and fails if anything is already there.
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func createBrainFile(brainDir, abs string, data []byte) error {
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rel, err := filepath.Rel(brainDir, abs)
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if err != nil {
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return err
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}
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bfs, err := brainfs.Open(brainDir)
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if err != nil {
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return fmt.Errorf("open brain: %w", err)
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}
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defer func() { _ = bfs.Close() }()
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return bfs.CreateRegular(filepath.ToSlash(rel), data)
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}
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// removeBrainFile removes the file at abs (inside brainDir) through the
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// brain root.
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func removeBrainFile(brainDir, abs string) error {
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rel, err := filepath.Rel(brainDir, abs)
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if err != nil {
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return err
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}
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bfs, err := brainfs.Open(brainDir)
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if err != nil {
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return fmt.Errorf("open brain: %w", err)
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}
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defer func() { _ = bfs.Close() }()
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return bfs.Remove(filepath.ToSlash(rel))
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}
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