1 files changed, 80 insertions, 0 deletions
diff --git a/src/exchangedb/pg_gc.c b/src/exchangedb/pg_gc.c
new file mode 100644
index 00000000..e01c1e10
--- /dev/null
+++ b/src/exchangedb/pg_gc.c
@@ -0,0 +1,80 @@
+/*
+   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_gc.c
+ * @brief Implementation of the gc 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_gc.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_GenericReturnValue
+TEH_PG_gc (void *cls)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
+  struct GNUNET_TIME_Absolute long_ago;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_absolute_time (&long_ago),
+    GNUNET_PQ_query_param_absolute_time (&now),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_Context *conn;
+  enum GNUNET_GenericReturnValue ret;
+
+  /* Keep wire fees for 10 years, that should always
+     be enough _and_ they are tiny so it does not
+     matter to make this tight */
+  long_ago = GNUNET_TIME_absolute_subtract (
+    now,
+    GNUNET_TIME_relative_multiply (
+      GNUNET_TIME_UNIT_YEARS,
+      10));
+  {
+    struct GNUNET_PQ_ExecuteStatement es[] = {
+      GNUNET_PQ_make_try_execute ("SET search_path TO exchange;"),
+      GNUNET_PQ_EXECUTE_STATEMENT_END
+    };
+    struct GNUNET_PQ_PreparedStatement ps[] = {
+      /* Used in #postgres_gc() */
+      GNUNET_PQ_make_prepare ("run_gc",
+                              "CALL"
+                              " exchange_do_gc"
+                              " ($1,$2);"),
+      GNUNET_PQ_PREPARED_STATEMENT_END
+    };
+
+    conn = GNUNET_PQ_connect_with_cfg (pg->cfg,
+                                       "exchangedb-postgres",
+                                       NULL,
+                                       es,
+                                       ps);
+  }
+  if (NULL == conn)
+    return GNUNET_SYSERR;
+  ret = GNUNET_OK;
+  if (0 > GNUNET_PQ_eval_prepared_non_select (conn,
+                                              "run_gc",
+                                              params))
+    ret = GNUNET_SYSERR;
+  GNUNET_PQ_disconnect (conn);
+  return ret;
+}