session provider에도 touch 추가

session/impl_mongo.go

@@ -77,6 +77,24 @@ func (p *provider_mongo) Query(pk string) (*Authorization, error) {
 	return &auth, err
 }
 
+func (p *provider_mongo) Touch(pk string) (bool, error) {
+	sk := publickey_to_storagekey(publickey(pk))
+	worked, _, err := p.mongoClient.Update(session_collection_name, bson.M{
+		"key": sk,
+	}, bson.M{
+		"$currentDate": bson.M{
+			"_ts": bson.M{"$type": "date"},
+		},
+	}, options.Update().SetUpsert(false))
+
+	if err != nil {
+		logger.Println("provider Touch :", err)
+		return false, err
+	}
+
+	return worked, nil
+}
+
 type consumer_mongo struct {
 	consumer_common[*sessionMongo]
 	ids         map[primitive.ObjectID]storagekey