1 files changed, 147 insertions, 0 deletions
diff --git a/src/backenddb/pg_select_wirewatch_accounts.c b/src/backenddb/pg_select_wirewatch_accounts.c
new file mode 100644
index 00000000..050caefb
--- /dev/null
+++ b/src/backenddb/pg_select_wirewatch_accounts.c
@@ -0,0 +1,147 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2022, 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 backenddb/pg_select_wirewatch_accounts.c
+ * @brief Implementation of the select_wirewatch_accounts function for Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <taler/taler_error_codes.h>
+#include <taler/taler_dbevents.h>
+#include <taler/taler_pq_lib.h>
+#include "pg_select_wirewatch_accounts.h"
+#include "pg_helper.h"
+
+
+/**
+ * Closure for #handle_results().
+ */
+struct Context
+{
+  /**
+   * Function to call with results.
+   */
+  TALER_MERCHANTDB_WirewatchWorkCallback cb;
+
+  /**
+   * Closure for @e cb.
+   */
+  void *cb_cls;
+
+  /**
+   * Set to true if the parsing failed.
+   */
+  bool failure;
+};
+
+
+/**
+ * Function to be called with the results of a SELECT statement
+ * that has returned @a num_results results about accounts.
+ *
+ * @param cls of type `struct Context *`
+ * @param result the postgres result
+ * @param num_results the number of results in @a result
+ */
+static void
+handle_results (void *cls,
+                PGresult *result,
+                unsigned int num_results)
+{
+  struct Context *ctx = cls;
+
+  for (unsigned int i = 0; i < num_results; i++)
+  {
+    char *instance;
+    char *payto_uri;
+    char *facade_url;
+    json_t *credential;
+    uint64_t last_serial;
+    struct GNUNET_PQ_ResultSpec rs[] = {
+      GNUNET_PQ_result_spec_string ("merchant_id",
+                                    &instance),
+      GNUNET_PQ_result_spec_string ("payto_uri",
+                                    &payto_uri),
+      GNUNET_PQ_result_spec_string ("credit_facade_url",
+                                    &facade_url),
+      GNUNET_PQ_result_spec_allow_null (
+        TALER_PQ_result_spec_json ("credit_facade_credentials",
+                                   &credential),
+        NULL),
+      GNUNET_PQ_result_spec_uint64 ("last_bank_serial",
+                                    &last_serial),
+      GNUNET_PQ_result_spec_end
+    };
+
+    if (GNUNET_OK !=
+        GNUNET_PQ_extract_result (result,
+                                  rs,
+                                  i))
+    {
+      GNUNET_break (0);
+      ctx->failure = true;
+      return;
+    }
+    ctx->cb (ctx->cb_cls,
+             instance,
+             payto_uri,
+             facade_url,
+             credential,
+             last_serial);
+    GNUNET_PQ_cleanup_result (rs);
+  }
+}
+
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_select_wirewatch_accounts (
+  void *cls,
+  TALER_MERCHANTDB_WirewatchWorkCallback cb,
+  void *cb_cls)
+{
+  struct PostgresClosure *pg = cls;
+  struct Context ctx = {
+    .cb = cb,
+    .cb_cls = cb_cls
+  };
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_end
+  };
+  enum GNUNET_DB_QueryStatus qs;
+
+  PREPARE (pg,
+           "select_wirewatch_progress",
+           "SELECT"
+           " last_bank_serial"
+           ",merchant_id"
+           ",payto_uri"
+           ",credit_facade_url"
+           ",credit_facade_credentials"
+           " FROM merchant_accounts"
+           " JOIN merchant_instances"
+           "   USING (merchant_serial)"
+           " WHERE active"
+           "   AND credit_facade_url IS NOT NULL");
+  check_connection (pg);
+  qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+                                             "select_wirewatch_progress",
+                                             params,
+                                             &handle_results,
+                                             &ctx);
+  if (ctx.failure)
+    return GNUNET_DB_STATUS_HARD_ERROR;
+  return qs;
+}