morz-infoboard/server/backend/internal/httpapi/playerstatus_store_file.go
Jesko Anschütz 56635554c7 Fuege Screen-Loeschung, Meta-Update, Datei-Persistenz und Lifecycle-Test hinzu
- DELETE /api/v1/screens/{screenId}/status loescht einzelne Screen-Eintraege
- /api/v1/meta listet jetzt 5 Tools inkl. screen-status-delete und diagnostic_ui-Pfade
- filePlayerStatusStore persistiert den Status-Store atomar in einer JSON-Datei
- MORZ_INFOBOARD_STATUS_STORE_PATH aktiviert die Datei-Persistenz (leer = In-Memory)
- Integration-Test deckt den vollstaendigen Lifecycle: POST -> list -> HTML -> JSON -> DELETE -> 404 ab
- DEVELOPMENT.md beschreibt End-to-End-Entwicklungstest und neue Env-Variable

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-22 20:34:37 +01:00

89 lines
1.9 KiB
Go

package httpapi
import (
"encoding/json"
"os"
"path/filepath"
)
// filePlayerStatusStore wraps inMemoryPlayerStatusStore and persists the
// records to a JSON file on every mutation. Reads are served from memory.
type filePlayerStatusStore struct {
*inMemoryPlayerStatusStore
path string
}
func newFilePlayerStatusStore(path string) (*filePlayerStatusStore, error) {
s := &filePlayerStatusStore{
inMemoryPlayerStatusStore: newInMemoryPlayerStatusStore(),
path: path,
}
if err := s.load(); err != nil {
return nil, err
}
return s, nil
}
// NewStoreFromConfig returns a playerStatusStore. If path is non-empty a
// file-backed store is used; otherwise an in-memory store is returned.
func NewStoreFromConfig(path string) (playerStatusStore, error) {
if path == "" {
return newInMemoryPlayerStatusStore(), nil
}
return newFilePlayerStatusStore(path)
}
func (s *filePlayerStatusStore) Save(record playerStatusRecord) {
s.inMemoryPlayerStatusStore.Save(record)
_ = s.persist()
}
func (s *filePlayerStatusStore) Delete(screenID string) bool {
ok := s.inMemoryPlayerStatusStore.Delete(screenID)
if ok {
_ = s.persist()
}
return ok
}
func (s *filePlayerStatusStore) load() error {
data, err := os.ReadFile(s.path)
if os.IsNotExist(err) {
return nil
}
if err != nil {
return err
}
var records []playerStatusRecord
if err := json.Unmarshal(data, &records); err != nil {
return err
}
s.mu.Lock()
defer s.mu.Unlock()
for _, r := range records {
s.records[r.ScreenID] = r
}
return nil
}
func (s *filePlayerStatusStore) persist() error {
s.mu.RLock()
records := make([]playerStatusRecord, 0, len(s.records))
for _, r := range s.records {
records = append(records, r)
}
s.mu.RUnlock()
data, err := json.Marshal(records)
if err != nil {
return err
}
tmp := s.path + ".tmp"
if err := os.WriteFile(tmp, data, 0o644); err != nil {
return err
}
return os.Rename(tmp, filepath.Clean(s.path))
}