diff options
Diffstat (limited to 'src/exchangedb/pg_get_wire_fees.c')
-rw-r--r-- | src/exchangedb/pg_get_wire_fees.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/exchangedb/pg_get_wire_fees.c b/src/exchangedb/pg_get_wire_fees.c new file mode 100644 index 000000000..a83db151d --- /dev/null +++ b/src/exchangedb/pg_get_wire_fees.c @@ -0,0 +1,150 @@ +/* + 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_wire_fees.c + * @brief Implementation of the get_wire_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_wire_fees.h" +#include "pg_helper.h" + +/** + * Closure for #get_wire_fees_cb(). + */ +struct GetWireFeesContext +{ + /** + * Function to call per result. + */ + TALER_EXCHANGEDB_WireFeeCallback cb; + + /** + * Closure for @e cb. + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Flag set to #GNUNET_OK as long as everything is fine. + */ + enum GNUNET_GenericReturnValue status; + +}; + + +/** + * Invoke the callback for each result. + * + * @param cls a `struct GetWireFeesContext *` + * @param result SQL result + * @param num_results number of rows in @a result + */ +static void +get_wire_fees_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct GetWireFeesContext *ctx = cls; + struct PostgresClosure *pg = ctx->pg; + + for (unsigned int i = 0; i < num_results; i++) + { + struct TALER_MasterSignatureP master_sig; + struct TALER_WireFeeSet fees; + struct GNUNET_TIME_Timestamp start_date; + struct GNUNET_TIME_Timestamp end_date; + struct GNUNET_PQ_ResultSpec rs[] = { + TALER_PQ_RESULT_SPEC_AMOUNT ("wire_fee", + &fees.wire), + TALER_PQ_RESULT_SPEC_AMOUNT ("closing_fee", + &fees.closing), + GNUNET_PQ_result_spec_timestamp ("start_date", + &start_date), + GNUNET_PQ_result_spec_timestamp ("end_date", + &end_date), + 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); + ctx->status = GNUNET_SYSERR; + return; + } + ctx->cb (ctx->cb_cls, + &fees, + start_date, + end_date, + &master_sig); + GNUNET_PQ_cleanup_result (rs); + } +} + + +enum GNUNET_DB_QueryStatus +TEH_PG_get_wire_fees (void *cls, + const char *wire_method, + TALER_EXCHANGEDB_WireFeeCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_string (wire_method), + GNUNET_PQ_query_param_end + }; + struct GetWireFeesContext ctx = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg, + .status = GNUNET_OK + }; + enum GNUNET_DB_QueryStatus qs; + + + PREPARE (pg, + "get_wire_fees", + "SELECT" + " wire_fee_val" + ",wire_fee_frac" + ",closing_fee_val" + ",closing_fee_frac" + ",start_date" + ",end_date" + ",master_sig" + " FROM wire_fee" + " WHERE wire_method=$1"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "get_wire_fees", + params, + &get_wire_fees_cb, + &ctx); + if (GNUNET_OK != ctx.status) + return GNUNET_DB_STATUS_HARD_ERROR; + return qs; +} |