From 6991ca011b4f97d24066f82ccd09adde8a692f6a Mon Sep 17 00:00:00 2001
From: Joseph <Joseph.xu@efrei.net>
Date: Mon, 14 Nov 2022 07:35:56 -0500
Subject: remove more functions

---
 src/exchangedb/pg_get_global_fees.c | 175 ++++++++++++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 src/exchangedb/pg_get_global_fees.c

(limited to 'src/exchangedb/pg_get_global_fees.c')

diff --git a/src/exchangedb/pg_get_global_fees.c b/src/exchangedb/pg_get_global_fees.c
new file mode 100644
index 000000000..0e1736bd4
--- /dev/null
+++ b/src/exchangedb/pg_get_global_fees.c
@@ -0,0 +1,175 @@
+/*
+   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_get_global_fees.c
+ * @brief Implementation of the get_global_fees 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_get_global_fees.h"
+#include "pg_helper.h"
+
+
+/**
+ * Closure for #global_fees_cb().
+ */
+struct GlobalFeeContext
+{
+  /**
+   * Function to call for each global fee block.
+   */
+  TALER_EXCHANGEDB_GlobalFeeCallback cb;
+
+  /**
+   * Closure to give to @e rec.
+   */
+  void *cb_cls;
+
+  /**
+   * Plugin context.
+   */
+  struct PostgresClosure *pg;
+
+  /**
+   * Set to #GNUNET_SYSERR on error.
+   */
+  enum GNUNET_GenericReturnValue status;
+};
+
+
+/**
+ * Function to be called with the results of a SELECT statement
+ * that has returned @a num_results results.
+ *
+ * @param cls closure
+ * @param result the postgres result
+ * @param num_results the number of results in @a result
+ */
+static void
+global_fees_cb (void *cls,
+                PGresult *result,
+                unsigned int num_results)
+{
+  struct GlobalFeeContext *gctx = cls;
+  struct PostgresClosure *pg = gctx->pg;
+
+  for (unsigned int i = 0; i<num_results; i++)
+  {
+    struct TALER_GlobalFeeSet fees;
+    struct GNUNET_TIME_Relative purse_timeout;
+    struct GNUNET_TIME_Relative history_expiration;
+    uint32_t purse_account_limit;
+    struct GNUNET_TIME_Timestamp start_date;
+    struct GNUNET_TIME_Timestamp end_date;
+    struct TALER_MasterSignatureP master_sig;
+    struct GNUNET_PQ_ResultSpec rs[] = {
+      GNUNET_PQ_result_spec_timestamp ("start_date",
+                                       &start_date),
+      GNUNET_PQ_result_spec_timestamp ("end_date",
+                                       &end_date),
+      TALER_PQ_RESULT_SPEC_AMOUNT ("history_fee",
+                                   &fees.history),
+      TALER_PQ_RESULT_SPEC_AMOUNT ("account_fee",
+                                   &fees.account),
+      TALER_PQ_RESULT_SPEC_AMOUNT ("purse_fee",
+                                   &fees.purse),
+      GNUNET_PQ_result_spec_relative_time ("purse_timeout",
+                                           &purse_timeout),
+      GNUNET_PQ_result_spec_relative_time ("history_expiration",
+                                           &history_expiration),
+      GNUNET_PQ_result_spec_uint32 ("purse_account_limit",
+                                    &purse_account_limit),
+      GNUNET_PQ_result_spec_auto_from_type ("master_sig",
+                                            &master_sig),
+      GNUNET_PQ_result_spec_end
+    };
+    if (GNUNET_OK !=
+        GNUNET_PQ_extract_result (result,
+                                  rs,
+                                  i))
+    {
+      GNUNET_break (0);
+      gctx->status = GNUNET_SYSERR;
+      break;
+    }
+    gctx->cb (gctx->cb_cls,
+              &fees,
+              purse_timeout,
+              history_expiration,
+              purse_account_limit,
+              start_date,
+              end_date,
+              &master_sig);
+    GNUNET_PQ_cleanup_result (rs);
+  }
+}
+
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_get_global_fees (void *cls,
+                          TALER_EXCHANGEDB_GlobalFeeCallback cb,
+                          void *cb_cls)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_TIME_Timestamp date
+    = GNUNET_TIME_absolute_to_timestamp (
+        GNUNET_TIME_absolute_subtract (
+          GNUNET_TIME_absolute_get (),
+          GNUNET_TIME_UNIT_YEARS));
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_timestamp (&date),
+    GNUNET_PQ_query_param_end
+  };
+  struct GlobalFeeContext gctx = {
+    .cb = cb,
+    .cb_cls = cb_cls,
+    .pg = pg,
+    .status = GNUNET_OK
+  };
+
+      /* Used in #postgres_get_global_fees() */
+  PREPARE (pg,
+           "get_global_fees",
+           "SELECT "
+           " start_date"
+           ",end_date"
+           ",history_fee_val"
+           ",history_fee_frac"
+           ",account_fee_val"
+           ",account_fee_frac"
+           ",purse_fee_val"
+           ",purse_fee_frac"
+           ",purse_timeout"
+           ",history_expiration"
+           ",purse_account_limit"
+           ",master_sig"
+           " FROM global_fee"
+           " WHERE start_date >= $1");
+
+  return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+                                               "get_global_fees",
+                                               params,
+                                               &global_fees_cb,
+                                               &gctx);
+}
+
+
+
+
-- 
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