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author | Christian Grothoff <christian@grothoff.org> | 2022-11-01 00:11:12 +0100 |
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committer | Christian Grothoff <christian@grothoff.org> | 2022-11-01 00:11:12 +0100 |
commit | 7cc7f81d8a716ba82319e256b6c292dc1a4afd86 (patch) | |
tree | 6c98496f597748367985d3d4f5de2dc8caee0f6e /src/auditordb/pg_select_historic_reserve_revenue.c | |
parent | d97ef7fcf67cdf986f5cebd854b1688a71c573d5 (diff) | |
download | exchange-7cc7f81d8a716ba82319e256b6c292dc1a4afd86.tar.xz |
split up auditor db plugin into individual files per main query
Diffstat (limited to 'src/auditordb/pg_select_historic_reserve_revenue.c')
-rw-r--r-- | src/auditordb/pg_select_historic_reserve_revenue.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/auditordb/pg_select_historic_reserve_revenue.c b/src/auditordb/pg_select_historic_reserve_revenue.c new file mode 100644 index 000000000..e3172f9fe --- /dev/null +++ b/src/auditordb/pg_select_historic_reserve_revenue.c @@ -0,0 +1,144 @@ +/* + 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 pg_select_historic_reserve_revenue.c + * @brief Low-level (statement-level) Postgres database access for the exchange + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_error_codes.h" +#include "taler_dbevents.h" +#include "taler_pq_lib.h" +#include "pg_select_historic_reserve_revenue.h" +#include "pg_helper.h" + + +/** + * Closure for #historic_reserve_revenue_cb(). + */ +struct HistoricReserveRevenueContext +{ + /** + * Function to call for each result. + */ + TALER_AUDITORDB_HistoricReserveRevenueDataCallback cb; + + /** + * Closure for @e cb. + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Number of results processed. + */ + enum GNUNET_DB_QueryStatus qs; +}; + + +/** + * Helper function for #postgres_select_historic_reserve_revenue(). + * To be called with the results of a SELECT statement + * that has returned @a num_results results. + * + * @param cls closure of type `struct HistoricRevenueContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +historic_reserve_revenue_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct HistoricReserveRevenueContext *hrc = cls; + struct PostgresClosure *pg = hrc->pg; + + for (unsigned int i = 0; i < num_results; i++) + { + struct GNUNET_TIME_Timestamp start_date; + struct GNUNET_TIME_Timestamp end_date; + struct TALER_Amount reserve_profits; + 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 ("reserve_profits", + &reserve_profits), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + hrc->qs = GNUNET_DB_STATUS_HARD_ERROR; + return; + } + hrc->qs = i + 1; + if (GNUNET_OK != + hrc->cb (hrc->cb_cls, + start_date, + end_date, + &reserve_profits)) + break; + } +} + + +enum GNUNET_DB_QueryStatus +TAH_PG_select_historic_reserve_revenue ( + void *cls, + const struct TALER_MasterPublicKeyP *master_pub, + TALER_AUDITORDB_HistoricReserveRevenueDataCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_auto_from_type (master_pub), + GNUNET_PQ_query_param_end + }; + enum GNUNET_DB_QueryStatus qs; + struct HistoricReserveRevenueContext hrc = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg + }; + + PREPARE (pg, + "auditor_historic_reserve_summary_select", + "SELECT" + " start_date" + ",end_date" + ",reserve_profits_val" + ",reserve_profits_frac" + " FROM auditor_historic_reserve_summary" + " WHERE master_pub=$1;"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "auditor_historic_reserve_summary_select", + params, + &historic_reserve_revenue_cb, + &hrc); + if (0 >= qs) + return qs; + return hrc.qs; +} |