1 files changed, 49 insertions, 0 deletions
diff --git a/src/backenddb/pg_lock_product.h b/src/backenddb/pg_lock_product.h
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+++ b/src/backenddb/pg_lock_product.h
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+/*
+   This file is part of TALER
+   Copyright (C) 2022 Taler Systems SA
+
+   TALER 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, or (at your option) any later version.
+
+   TALER 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
+   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * @file backenddb/pg_lock_product.h
+ * @brief implementation of the lock_product function for Postgres
+ * @author Iván Ávalos
+ */
+#ifndef PG_LOCK_PRODUCT_H
+#define PG_LOCK_PRODUCT_H
+
+#include <taler/taler_util.h>
+#include <taler/taler_json_lib.h>
+#include "taler_merchantdb_plugin.h"
+
+/**
+ * Lock stocks of a particular product. Note that the transaction must
+ * enforce that the "stocked-sold-lost >= locked" constraint holds.
+ *
+ * @param cls closure
+ * @param instance_id instance to lookup products for
+ * @param product_id product to lookup
+ * @param uuid the UUID that holds the lock
+ * @param quantity how many units should be locked
+ * @param expiration_time when should the lock expire
+ * @return database result code, #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS if the
+ *         product is unknown OR if there insufficient stocks remaining
+ */
+enum GNUNET_DB_QueryStatus
+TMH_PG_lock_product (void *cls,
+                     const char *instance_id,
+                     const char *product_id,
+                     const struct GNUNET_Uuid *uuid,
+                     uint64_t quantity,
+                     struct GNUNET_TIME_Timestamp expiration_time);
+
+#endif