WiP: age-withdraw implementation, part 2/n

Commit phase of the age-withdraw protocol implemented, according to
https://docs.taler.net/core/api-exchange.html#withdraw-with-age-restriction

- added new files, forgot in previous commit

1 files changed, 45 insertions, 0 deletions

diff --git a/src/exchangedb/pg_get_age_withdraw_info.h b/src/exchangedb/pg_get_age_withdraw_info.h
new file mode 100644
index 000000000..0844b1a19
--- /dev/null
+++ b/src/exchangedb/pg_get_age_withdraw_info.h
@@ -0,0 +1,45 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2023 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_get_age_withdraw_info.h
+ * @brief implementation of the get_age_withdraw_info function for Postgres
+ * @author Özgür KESIM
+ */
+#ifndef PG_GET_AGE_WITHDRAW_INFO_H
+#define PG_GET_AGE_WITHDRAW_INFO_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+
+/**
+   * Locate the response for a age-withdraw request under a hash that uniquely
+   * identifies the age-withdraw operation.  Used to ensure idempotency of the
+   * request.
+   *
+   * @param cls the @e cls of this struct with the plugin-specific state
+   * @param reserve_pub public key of the reserve for which the age-withdraw request is made
+   * @param ach hash that uniquely identifies the age-withdraw operation
+   * @param[out] awc corresponding details of the previous age-withdraw request if an entry was found
+   * @return statement execution status
+   */
+enum GNUNET_DB_QueryStatus
+TEH_PG_get_age_withdraw_info (
+  void *cls,
+  const struct TALER_ReservePublicKeyP *reserve_pub,
+  const struct TALER_AgeWithdrawCommitmentHashP *ach,
+  struct TALER_EXCHANGEDB_AgeWithdrawCommitment *awc);
+#endif