1 files changed, 82 insertions, 0 deletions
diff --git a/src/exchangedb/pg_do_melt.c b/src/exchangedb/pg_do_melt.c
new file mode 100644
index 000000000..0b26386d8
--- /dev/null
+++ b/src/exchangedb/pg_do_melt.c
@@ -0,0 +1,82 @@
+/*
+   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_do_melt.c
+ * @brief Implementation of the do_melt 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_do_melt.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_do_melt (
+  void *cls,
+  const struct TALER_RefreshMasterSecretP *rms,
+  struct TALER_EXCHANGEDB_Refresh *refresh,
+  uint64_t known_coin_id,
+  bool *zombie_required,
+  bool *balance_ok)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    NULL == rms
+    ? GNUNET_PQ_query_param_null ()
+    : GNUNET_PQ_query_param_auto_from_type (rms),
+    TALER_PQ_query_param_amount (pg->conn,
+                                 &refresh->amount_with_fee),
+    GNUNET_PQ_query_param_auto_from_type (&refresh->rc),
+    GNUNET_PQ_query_param_auto_from_type (&refresh->coin.coin_pub),
+    GNUNET_PQ_query_param_auto_from_type (&refresh->coin_sig),
+    GNUNET_PQ_query_param_uint64 (&known_coin_id),
+    GNUNET_PQ_query_param_uint32 (&refresh->noreveal_index),
+    GNUNET_PQ_query_param_bool (*zombie_required),
+    GNUNET_PQ_query_param_end
+  };
+  bool is_null;
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_bool ("balance_ok",
+                                balance_ok),
+    GNUNET_PQ_result_spec_bool ("zombie_required",
+                                zombie_required),
+    GNUNET_PQ_result_spec_allow_null (
+      GNUNET_PQ_result_spec_uint32 ("noreveal_index",
+                                    &refresh->noreveal_index),
+      &is_null),
+    GNUNET_PQ_result_spec_end
+  };
+  enum GNUNET_DB_QueryStatus qs;
+
+  PREPARE (pg,
+           "call_melt",
+           "SELECT "
+           " out_balance_ok AS balance_ok"
+           ",out_zombie_bad AS zombie_required"
+           ",out_noreveal_index AS noreveal_index"
+           " FROM exchange_do_melt"
+           " ($1,$2,$3,$4,$5,$6,$7,$8);");
+  qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                 "call_melt",
+                                                 params,
+                                                 rs);
+  if (is_null)
+    refresh->noreveal_index = UINT32_MAX; /* set to very invalid value */
+  return qs;
+}