get_ready_deposit.c (3675B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022, 2023 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 /** 17 * @file exchangedb/get_ready_deposit.c 18 * @brief Implementation of the get_ready_deposit function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/get_ready_deposit.h" 23 #include "helper.h" 24 25 26 enum GNUNET_DB_QueryStatus 27 TALER_EXCHANGEDB_get_ready_deposit (struct TALER_EXCHANGEDB_PostgresContext *pg, 28 uint64_t start_shard_row, 29 uint64_t end_shard_row, 30 struct TALER_MerchantPublicKeyP * 31 merchant_pub, 32 struct TALER_FullPayto *payto_uri, 33 char **extra_wire_subject_metadata) 34 { 35 struct GNUNET_TIME_Absolute now 36 = GNUNET_TIME_absolute_get (); 37 /* Must match the cut-off used by TALER_EXCHANGEDB_do_aggregate() 38 exactly: a deposit whose refund deadline has not passed by that 39 cut-off cannot be aggregated yet, so reporting it as "ready" 40 would make the aggregator spin on it without making progress. */ 41 struct GNUNET_TIME_Absolute refund_cutoff 42 = GNUNET_TIME_absolute_round_down (now, 43 pg->aggregator_shift); 44 struct GNUNET_PQ_QueryParam params[] = { 45 GNUNET_PQ_query_param_absolute_time (&now), 46 GNUNET_PQ_query_param_absolute_time (&refund_cutoff), 47 GNUNET_PQ_query_param_uint64 (&start_shard_row), 48 GNUNET_PQ_query_param_uint64 (&end_shard_row), 49 GNUNET_PQ_query_param_end 50 }; 51 struct GNUNET_PQ_ResultSpec rs[] = { 52 GNUNET_PQ_result_spec_auto_from_type ("merchant_pub", 53 merchant_pub), 54 GNUNET_PQ_result_spec_string ("payto_uri", 55 &payto_uri->full_payto), 56 GNUNET_PQ_result_spec_allow_null ( 57 GNUNET_PQ_result_spec_string ("extra_wire_subject_metadata", 58 extra_wire_subject_metadata), 59 NULL), 60 GNUNET_PQ_result_spec_end 61 }; 62 const char *query = "deposits_get_ready"; 63 64 *extra_wire_subject_metadata = NULL; 65 PREPARE (pg, 66 query, 67 "SELECT" 68 " wts.payto_uri" 69 ",bdep.merchant_pub" 70 ",bdep.extra_wire_subject_metadata" 71 " FROM batch_deposits bdep" 72 " JOIN wire_targets wts" 73 " USING (wire_target_h_payto)" 74 " WHERE NOT (bdep.done OR bdep.policy_blocked)" 75 " AND bdep.wire_deadline<=$1" 76 " AND bdep.refund_deadline<$2" /* see do_aggregate.c */ 77 " AND bdep.shard >= $3" 78 " AND bdep.shard <= $4" 79 " ORDER BY " 80 " bdep.wire_deadline ASC" 81 " ,bdep.shard ASC" 82 " LIMIT 1;"); 83 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 84 query, 85 params, 86 rs); 87 }