1 files changed, 101 insertions, 0 deletions
diff --git a/src/exchangedb/pg_do_reserve_open.c b/src/exchangedb/pg_do_reserve_open.c
new file mode 100644
index 000000000..b15c96dd1
--- /dev/null
+++ b/src/exchangedb/pg_do_reserve_open.c
@@ -0,0 +1,101 @@
+/*
+   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 pg_do_reserve_open.c
+ * @brief Low-level (statement-level) Postgres database access for the exchange
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_do_reserve_open.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_do_reserve_open (
+  void *cls,
+  const struct TALER_ReservePublicKeyP *reserve_pub,
+  const struct TALER_Amount *total_paid,
+  const struct TALER_Amount *reserve_payment,
+  uint32_t min_purse_limit,
+  const struct TALER_ReserveSignatureP *reserve_sig,
+  struct GNUNET_TIME_Timestamp desired_expiration,
+  struct GNUNET_TIME_Timestamp now,
+  const struct TALER_Amount *open_fee,
+  bool *no_funds,
+  struct TALER_Amount *reserve_balance,
+  struct TALER_Amount *open_cost,
+  struct GNUNET_TIME_Timestamp *final_expiration)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (reserve_pub),
+    TALER_PQ_query_param_amount (
+      pg->conn,
+      total_paid),
+    TALER_PQ_query_param_amount (
+      pg->conn,
+      reserve_payment),
+    GNUNET_PQ_query_param_uint32 (&min_purse_limit),
+    GNUNET_PQ_query_param_uint32 (&pg->def_purse_limit),
+    GNUNET_PQ_query_param_auto_from_type (reserve_sig),
+    GNUNET_PQ_query_param_timestamp (&desired_expiration),
+    GNUNET_PQ_query_param_relative_time (&pg->legal_reserve_expiration_time),
+    GNUNET_PQ_query_param_timestamp (&now),
+    TALER_PQ_query_param_amount (pg->conn,
+                                 open_fee),
+    GNUNET_PQ_query_param_end
+  };
+  bool no_reserve = true;
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    TALER_PQ_result_spec_amount ("out_open_cost",
+                                 pg->currency,
+                                 open_cost),
+    TALER_PQ_result_spec_amount ("out_reserve_balance",
+                                 pg->currency,
+                                 reserve_balance),
+    GNUNET_PQ_result_spec_timestamp ("out_final_expiration",
+                                     final_expiration),
+    GNUNET_PQ_result_spec_bool ("out_no_reserve",
+                                &no_reserve),
+    GNUNET_PQ_result_spec_bool ("out_no_funds",
+                                no_funds),
+    GNUNET_PQ_result_spec_end
+  };
+  enum GNUNET_DB_QueryStatus qs;
+
+  PREPARE (pg,
+           "do_reserve_open",
+           "SELECT "
+           " out_open_cost"
+           ",out_final_expiration"
+           ",out_no_funds"
+           ",out_no_reserve"
+           ",out_reserve_balance"
+           " FROM exchange_do_reserve_open"
+           " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10);");
+  qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                 "do_reserve_open",
+                                                 params,
+                                                 rs);
+  if (qs <= 0)
+    return qs;
+  if (no_reserve)
+    return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
+  return qs;
+}