Files
hyperguild/ingestion/internal/watcher/park.go
T
mathiasandClaude Sonnet 5.5 1025d77795
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fix(watcher): unique archive copies, read caps at the read, stale markers (review of #210)
From the independent review of #210:
- F1: processed/ and failed/ copies are created O_EXCL with -2,-3 suffixes via
  createUnique; same-named notes from different folders no longer replace one
  another's only surviving copy
- F2: extract.TextInMax / readAllMax cap the bytes actually read (a note can
  grow after the Lstat); extract.TextIn gets a 64 MiB default cap
- F3: a regular marker older than its note describes an earlier note of the
  same name; it no longer hides the new one (warn + remove); non-regular
  markers still count as done (no writes through links)
- F4: the planted-marker-link test is renamed to what it observes
Each has a test that fails without it; the read-cap test uses an endless reader
that errors at 8 MiB so a regression fails instead of exhausting memory.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-20 20:13:18 +02:00

52 lines
1.6 KiB
Go

package watcher
import (
"errors"
"fmt"
"io/fs"
"path/filepath"
"strings"
"github.com/mathiasbq/hyperguild/ingestion/internal/brainfs"
)
// Kept out of watcher.go on purpose: that file is covered by the raw-reader
// guard (internal/extract/callsites_test.go), which forbids any .Open selector
// there. This function reads nothing from raw/; it creates a file under the
// brain root, which refuses symlinked directories and never follows a final
// symlink.
// createParked writes data to raw/needs-review/<filename> through the brain
// root, never replacing a parked note: on a name clash it tries -2, -3, ...
// A needs-review that is a symlink, or any non-directory, is refused.
func createParked(brainDir, filename string, data []byte) error {
return createUnique(brainDir, "raw/needs-review", filename, data)
}
// createUnique writes data to dirRel/filename through the brain root, never
// replacing an existing file: on a name clash it tries -2, -3, ... A dirRel that
// is a symlink, or any non-directory, is refused.
func createUnique(brainDir, dirRel, filename string, data []byte) error {
bfs, err := brainfs.Open(brainDir)
if err != nil {
return err
}
defer func() { _ = bfs.Close() }()
ext := filepath.Ext(filename)
stem := strings.TrimSuffix(filename, ext)
for n := 1; n < 10000; n++ {
name := filename
if n > 1 {
name = fmt.Sprintf("%s-%d%s", stem, n, ext)
}
err := bfs.CreateRegular(dirRel+"/"+name, data)
if err == nil {
return nil
}
if !errors.Is(err, fs.ErrExist) {
return err
}
}
return fmt.Errorf("no free name for %q in %s", filename, dirRel)
}