1 files changed, 91 insertions, 0 deletions
diff --git a/src/exchangedb/pg_do_purse_merge.c b/src/exchangedb/pg_do_purse_merge.c
new file mode 100644
index 000000000..5a174ed02
--- /dev/null
+++ b/src/exchangedb/pg_do_purse_merge.c
@@ -0,0 +1,91 @@
+/*
+   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_purse_merge.c
+ * @brief Implementation of the do_purse_merge 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_purse_merge.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_do_purse_merge (
+  void *cls,
+  const struct TALER_PurseContractPublicKeyP *purse_pub,
+  const struct TALER_PurseMergeSignatureP *merge_sig,
+  const struct GNUNET_TIME_Timestamp merge_timestamp,
+  const struct TALER_ReserveSignatureP *reserve_sig,
+  const char *partner_url,
+  const struct TALER_ReservePublicKeyP *reserve_pub,
+  bool *no_partner,
+  bool *no_balance,
+  bool *in_conflict)
+{
+  struct PostgresClosure *pg = cls;
+  struct TALER_PaytoHashP h_payto;
+  struct GNUNET_TIME_Timestamp expiration
+    = GNUNET_TIME_relative_to_timestamp (pg->legal_reserve_expiration_time);
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (purse_pub),
+    GNUNET_PQ_query_param_auto_from_type (merge_sig),
+    GNUNET_PQ_query_param_timestamp (&merge_timestamp),
+    GNUNET_PQ_query_param_auto_from_type (reserve_sig),
+    (NULL == partner_url)
+    ? GNUNET_PQ_query_param_null ()
+    : GNUNET_PQ_query_param_string (partner_url),
+    GNUNET_PQ_query_param_auto_from_type (reserve_pub),
+    GNUNET_PQ_query_param_auto_from_type (&h_payto),
+    GNUNET_PQ_query_param_timestamp (&expiration),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_bool ("no_partner",
+                                no_partner),
+    GNUNET_PQ_result_spec_bool ("no_balance",
+                                no_balance),
+    GNUNET_PQ_result_spec_bool ("conflict",
+                                in_conflict),
+    GNUNET_PQ_result_spec_end
+  };
+
+  {
+    char *payto_uri;
+
+    payto_uri = TALER_reserve_make_payto (pg->exchange_url,
+                                          reserve_pub);
+    TALER_payto_hash (payto_uri,
+                      &h_payto);
+    GNUNET_free (payto_uri);
+  }
+  PREPARE (pg,
+           "call_purse_merge",
+           "SELECT"
+           " out_no_partner AS no_partner"
+           ",out_no_balance AS no_balance"
+           ",out_conflict AS conflict"
+           " FROM exchange_do_purse_merge"
+           "  ($1, $2, $3, $4, $5, $6, $7, $8);");
+
+  return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                   "call_purse_merge",
+                                                   params,
+                                                   rs);
+}