1 files changed, 113 insertions, 0 deletions
diff --git a/src/exchangedb/pg_insert_reserve_closed.c b/src/exchangedb/pg_insert_reserve_closed.c
new file mode 100644
index 000000000..6644fb892
--- /dev/null
+++ b/src/exchangedb/pg_insert_reserve_closed.c
@@ -0,0 +1,113 @@
+/*
+   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 exchangedb/pg_insert_reserve_closed.c
+ * @brief Implementation of the insert_reserve_closed function for Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_insert_reserve_closed.h"
+#include "pg_helper.h"
+#include "pg_reserves_get.h"
+#include "pg_reserves_update.h"
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_insert_reserve_closed (
+  void *cls,
+  const struct TALER_ReservePublicKeyP *reserve_pub,
+  struct GNUNET_TIME_Timestamp execution_date,
+  const char *receiver_account,
+  const struct TALER_WireTransferIdentifierRawP *wtid,
+  const struct TALER_Amount *amount_with_fee,
+  const struct TALER_Amount *closing_fee,
+  uint64_t close_request_row)
+{
+  struct PostgresClosure *pg = cls;
+  struct TALER_EXCHANGEDB_Reserve reserve;
+  enum GNUNET_DB_QueryStatus qs;
+  struct TALER_PaytoHashP h_payto;
+
+  TALER_payto_hash (receiver_account,
+                    &h_payto);
+  {
+    struct GNUNET_PQ_QueryParam params[] = {
+      GNUNET_PQ_query_param_auto_from_type (reserve_pub),
+      GNUNET_PQ_query_param_timestamp (&execution_date),
+      GNUNET_PQ_query_param_auto_from_type (wtid),
+      GNUNET_PQ_query_param_auto_from_type (&h_payto),
+      TALER_PQ_query_param_amount (pg->conn,
+                                   amount_with_fee),
+      TALER_PQ_query_param_amount (pg->conn,
+                                   closing_fee),
+      GNUNET_PQ_query_param_uint64 (&close_request_row),
+      GNUNET_PQ_query_param_end
+    };
+
+    PREPARE (pg,
+             "reserves_close_insert",
+             "INSERT INTO reserves_close "
+             "(reserve_pub"
+             ",execution_date"
+             ",wtid"
+             ",wire_target_h_payto"
+             ",amount"
+             ",closing_fee"
+             ",close_request_row"
+             ") VALUES ($1, $2, $3, $4, $5, $6, $7);");
+
+    qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
+                                             "reserves_close_insert",
+                                             params);
+  }
+  if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
+    return qs;
+
+  /* update reserve balance */
+  reserve.pub = *reserve_pub;
+  if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT !=
+      (qs = TEH_PG_reserves_get (cls,
+                                 &reserve)))
+  {
+    /* Existence should have been checked before we got here... */
+    GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR == qs);
+    if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
+      qs = GNUNET_DB_STATUS_HARD_ERROR;
+    return qs;
+  }
+  {
+    enum TALER_AmountArithmeticResult ret;
+
+    ret = TALER_amount_subtract (&reserve.balance,
+                                 &reserve.balance,
+                                 amount_with_fee);
+    if (ret < 0)
+    {
+      /* The reserve history was checked to make sure there is enough of a balance
+         left before we tried this; however, concurrent operations may have changed
+         the situation by now.  We should re-try the transaction.  */
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  "Closing of reserve `%s' refused due to balance mismatch. Retrying.\n",
+                  TALER_B2S (reserve_pub));
+      return GNUNET_DB_STATUS_HARD_ERROR;
+    }
+    GNUNET_break (TALER_AAR_RESULT_ZERO == ret);
+  }
+  return TEH_PG_reserves_update (cls,
+                                 &reserve);
+}