ensure search index file is config and shuts down gracefully

Author: dstpierre

backend/backend.go

@@ -228,7 +228,10 @@ func Setup(cfg config.AppConfig) {
 	}
 
 	if !cfg.NoFullTextSearch {
-		ftsFilename := "sb.fts"
+		ftsFilename := cfg.FullTextIndexFile
+		if len(ftsFilename) == 0 {
+			ftsFilename = "sb.fts"
+		}
 		src, err := search.New(ftsFilename, Cache)
 		if err != nil {
 			Log.Fatal().Err(err).Msg("unable to start full-text search")

config/config.go

@@ -84,6 +84,9 @@ type AppConfig struct {
 	LogFilename string
 	// NoFullTextSearch prevents full-text search index from initializing
 	NoFullTextSearch bool
+	// FullTextIndexFile fully qualify file path for the search index
+	// Hint: this is usually on a disk that do not vanish on each deployment.
+	FullTextIndexFile string
 	// ActivateFlag when set, the /account/init can bypass Stripe if matching val
 	ActivateFlag string
 }
@@ -122,6 +125,7 @@ func LoadConfig() AppConfig {
 		KeepPermissionInName:    os.Getenv("KEEP_PERM_COL_NAME") == "",
 		LogConsoleLevel:         os.Getenv("LOG_CONSOLE_LEVEL"),
 		LogFilename:             os.Getenv("LOG_FILENAME"),
+		FullTextIndexFile:       os.Getenv("FTS_INDEX_FILE"),
 		ActivateFlag:            os.Getenv("ACTIVATE_FLAG"),
 	}
 }

search/search.go

@@ -185,3 +185,9 @@ func (s *Search) receivedIndexEvent(data string) {
 		log.Println(err)
 	}
 }
+
+func (s *Search) Close() {
+	if err := s.index.Close(); err != nil {
+		log.Println(err)
+	}
+}

server.go

@@ -282,6 +282,9 @@ func Start(c config.AppConfig, log *logger.Logger) {
 	})
 	g.Go(func() error {
 		<-gCtx.Done()
+		if !c.NoFullTextSearch {
+			backend.Search.Close()
+		}
 		return httpsvr.Shutdown(context.Background())
 	})