Run badger garbage collector periodically

internal/datastore/badger_datastore/badger_datastore.go

@@ -1,12 +1,15 @@
 package badgerdatastore
 
 import (
+	"time"
+
 	"github.com/dgraph-io/badger/v4"
 	"github.com/pikami/cosmium/internal/logger"
 )
 
 type BadgerDataStore struct {
-	db *badger.DB
+	db       *badger.DB
+	gcTicker *time.Ticker
 }
 
 type BadgerDataStoreOptions struct {
@@ -25,12 +28,24 @@ func NewBadgerDataStore(options BadgerDataStoreOptions) *BadgerDataStore {
 		panic(err)
 	}
 
-	return &BadgerDataStore{
-		db: db,
+	gcTicker := time.NewTicker(5 * time.Minute)
+
+	ds := &BadgerDataStore{
+		db:       db,
+		gcTicker: gcTicker,
 	}
+
+	go ds.runGarbageCollector()
+
+	return ds
 }
 
 func (r *BadgerDataStore) Close() {
+	if r.gcTicker != nil {
+		r.gcTicker.Stop()
+		r.gcTicker = nil
+	}
+
 	r.db.Close()
 	r.db = nil
 }
@@ -39,3 +54,13 @@ func (r *BadgerDataStore) DumpToJson() (string, error) {
 	logger.ErrorLn("Badger datastore does not support state export currently.")
 	return "{}", nil
 }
+
+func (r *BadgerDataStore) runGarbageCollector() {
+	for range r.gcTicker.C {
+	again:
+		err := r.db.RunValueLogGC(0.7)
+		if err == nil {
+			goto again
+		}
+	}
+}