1 files changed, 86 insertions, 0 deletions
diff --git a/src/backenddb/pg_expire_locks.c b/src/backenddb/pg_expire_locks.c
new file mode 100644
index 00000000..7a3c3bac
--- /dev/null
+++ b/src/backenddb/pg_expire_locks.c
@@ -0,0 +1,86 @@
+/*
+   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_expire_locks.c
+ * @brief Implementation of the expire_locks function for Postgres
+ * @author Iván Ávalos
+ */
+#include "platform.h"
+#include <taler/taler_error_codes.h>
+#include <taler/taler_dbevents.h>
+#include <taler/taler_pq_lib.h>
+#include "pg_expire_locks.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_expire_locks (void *cls)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_absolute_time (&now),
+    GNUNET_PQ_query_param_end
+  };
+  enum GNUNET_DB_QueryStatus qs1;
+  enum GNUNET_DB_QueryStatus qs2;
+  enum GNUNET_DB_QueryStatus qs3;
+
+  check_connection (pg);
+  PREPARE (pg,
+           "unlock_products",
+           "DELETE FROM merchant_inventory_locks"
+           " WHERE expiration < $1");
+  qs1 = GNUNET_PQ_eval_prepared_non_select (pg->conn,
+                                            "unlock_products",
+                                            params);
+  if (qs1 < 0)
+  {
+    GNUNET_break (0);
+    return qs1;
+  }
+  PREPARE (pg,
+           "unlock_orders",
+           "DELETE FROM merchant_orders"
+           " WHERE pay_deadline < $1");
+  qs2 = GNUNET_PQ_eval_prepared_non_select (pg->conn,
+                                            "unlock_orders",
+                                            params);
+  if (qs2 < 0)
+  {
+    GNUNET_break (0);
+    return qs2;
+  }
+  PREPARE (pg,
+           "unlock_contracts",
+           "DELETE FROM merchant_contract_terms"
+           " WHERE NOT paid"
+           "   AND pay_deadline < $1");
+  qs3 = GNUNET_PQ_eval_prepared_non_select (pg->conn,
+                                            "unlock_contracts",
+                                            params);
+  if (qs3 < 0)
+  {
+    GNUNET_break (0);
+    return qs3;
+  }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Released %d+%d+%d locks\n",
+              qs1,
+              qs2,
+              qs3);
+  return qs1 + qs2 + qs3;
+}