1 files changed, 81 insertions, 0 deletions
diff --git a/src/knot/conf/migration.c b/src/knot/conf/migration.c
new file mode 100644
index 0000000..7e881b6
--- /dev/null
+++ b/src/knot/conf/migration.c
@@ -0,0 +1,81 @@
+/*  Copyright (C) 2017 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "knot/common/log.h"
+#include "knot/conf/migration.h"
+#include "knot/conf/confdb.h"
+
+/*
+static void try_unset(conf_t *conf, knot_db_txn_t *txn, yp_name_t *key0, yp_name_t *key1)
+{
+	int ret = conf_db_unset(conf, txn, key0, key1, NULL, 0, NULL, 0, true);
+	if (ret != KNOT_EOK && ret != KNOT_ENOENT) {
+		log_warning("conf, migration, failed to unset '%s%s%s' (%s)",
+		            key0 + 1,
+		            (key1 != NULL) ? "/"      : "",
+		            (key1 != NULL) ? key1 + 1 : "",
+		            knot_strerror(ret));
+	}
+}
+
+#define check_set(conf, txn, key0, key1, id, id_len, data, data_len) \
+	ret = conf_db_set(conf, txn, key0, key1, id, id_len, data, data_len); \
+	if (ret != KNOT_EOK && ret != KNOT_CONF_EREDEFINE) { \
+		log_error("conf, migration, failed to set '%s%s%s' (%s)", \
+		          key0 + 1, \
+		          (key1 != NULL) ? "/"      : "", \
+		          (key1 != NULL) ? key1 + 1 : "", \
+		          knot_strerror(ret)); \
+		return ret; \
+	}
+
+static int migrate_(
+	conf_t *conf,
+	knot_db_txn_t *txn)
+{
+	return KNOT_EOK;
+}
+*/
+
+int conf_migrate(
+	conf_t *conf)
+{
+	return KNOT_EOK;
+	/*
+	if (conf == NULL) {
+		return KNOT_EINVAL;
+	}
+
+	knot_db_txn_t txn;
+	int ret = conf->api->txn_begin(conf->db, &txn, 0);
+	if (ret != KNOT_EOK) {
+		return ret;
+	}
+
+	ret = migrate_(conf, &txn);
+	if (ret != KNOT_EOK) {
+		conf->api->txn_abort(&txn);
+		return ret;
+	}
+
+	ret = conf->api->txn_commit(&txn);
+	if (ret != KNOT_EOK) {
+		return ret;
+	}
+
+	return conf_refresh_txn(conf);
+	*/
+}