aggregate.c (9521B)
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/aggregate.c 18 * @brief Implementation of the aggregate function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_error_codes.h" 22 #include "taler/taler_pq_lib.h" 23 #include "exchange-database/compute_shard.h" 24 #include "exchange-database/aggregate.h" 25 #include "helper.h" 26 27 28 enum GNUNET_DB_QueryStatus 29 TALER_EXCHANGEDB_aggregate ( 30 struct TALER_EXCHANGEDB_PostgresContext *pg, 31 const struct TALER_FullPaytoHashP *h_payto, 32 const struct TALER_MerchantPublicKeyP *merchant_pub, 33 const struct TALER_WireTransferIdentifierRawP *wtid, 34 struct TALER_Amount *total) 35 { 36 uint64_t deposit_shard = TALER_EXCHANGEDB_compute_shard (merchant_pub); 37 struct GNUNET_TIME_Absolute now = {0}; 38 uint64_t sum_deposit_value; 39 uint64_t sum_deposit_frac; 40 uint64_t sum_refund_value; 41 uint64_t sum_refund_frac; 42 uint64_t sum_fee_value; 43 uint64_t sum_fee_frac; 44 enum GNUNET_DB_QueryStatus qs; 45 struct TALER_Amount sum_deposit; 46 struct TALER_Amount sum_refund; 47 struct TALER_Amount sum_fee; 48 struct TALER_Amount delta; 49 50 now = GNUNET_TIME_absolute_round_down (GNUNET_TIME_absolute_get (), 51 pg->aggregator_shift); 52 PREPARE (pg, 53 "aggregate", 54 "WITH bdep AS (" /* restrict to our merchant and account and mark as done */ 55 " UPDATE batch_deposits" 56 " SET done=TRUE" 57 " WHERE NOT (done OR policy_blocked)" /* only actually executable deposits */ 58 " AND refund_deadline<$1" 59 " AND shard=$5" /* only for efficiency, merchant_pub is what we really filter by */ 60 " AND merchant_pub=$2" /* filter by target merchant */ 61 " AND wire_target_h_payto=$3" /* merchant could have a 2nd bank account */ 62 " RETURNING" 63 " batch_deposit_serial_id)" 64 " ,cdep AS (" 65 " SELECT" 66 " coin_deposit_serial_id" 67 " ,batch_deposit_serial_id" 68 " ,coin_pub" 69 " ,amount_with_fee AS amount" 70 " FROM coin_deposits" 71 " WHERE batch_deposit_serial_id IN (SELECT batch_deposit_serial_id FROM bdep))" 72 " ,ref AS (" /* find applicable refunds -- NOTE: may do a full join on the master, maybe find a left-join way to integrate with query above to push it to the shards? */ 73 " SELECT" 74 " amount_with_fee AS refund" 75 " ,coin_pub" 76 " ,batch_deposit_serial_id" /* theoretically, coin could be in multiple refunded transactions */ 77 " FROM refunds" 78 " WHERE coin_pub IN (SELECT coin_pub FROM cdep)" 79 " AND batch_deposit_serial_id IN (SELECT batch_deposit_serial_id FROM bdep))" 80 " ,ref_by_coin AS (" /* total up refunds by coin */ 81 " SELECT" 82 " SUM((ref.refund).val) AS sum_refund_val" 83 " ,SUM((ref.refund).frac) AS sum_refund_frac" 84 " ,coin_pub" 85 " ,batch_deposit_serial_id" /* theoretically, coin could be in multiple refunded transactions */ 86 " FROM ref" 87 " GROUP BY coin_pub, batch_deposit_serial_id)" 88 " ,norm_ref_by_coin AS (" /* normalize */ 89 " SELECT" 90 " sum_refund_val + sum_refund_frac / 100000000 AS norm_refund_val" 91 " ,sum_refund_frac % 100000000 AS norm_refund_frac" 92 " ,coin_pub" 93 " ,batch_deposit_serial_id" /* theoretically, coin could be in multiple refunded transactions */ 94 " FROM ref_by_coin)" 95 " ,fully_refunded_coins AS (" /* find applicable refunds -- NOTE: may do a full join on the master, maybe find a left-join way to integrate with query above to push it to the shards? */ 96 " SELECT" 97 " cdep.coin_pub" 98 " FROM norm_ref_by_coin norm" 99 " JOIN cdep" 100 " ON (norm.coin_pub = cdep.coin_pub" 101 " AND norm.batch_deposit_serial_id = cdep.batch_deposit_serial_id" 102 " AND norm.norm_refund_val = (cdep.amount).val" 103 " AND norm.norm_refund_frac = (cdep.amount).frac))" 104 " ,fees AS (" /* find deposit fees for not fully refunded deposits */ 105 " SELECT" 106 " denom.fee_deposit AS fee" 107 " ,cs.batch_deposit_serial_id" /* ensures we get the fee for each coin, not once per denomination */ 108 " FROM cdep cs" 109 " JOIN known_coins kc" /* NOTE: may do a full join on the master, maybe find a left-join way to integrate with query above to push it to the shards? */ 110 " USING (coin_pub)" 111 " JOIN denominations denom" 112 " USING (denominations_serial)" 113 " WHERE coin_pub NOT IN (SELECT coin_pub FROM fully_refunded_coins))" 114 " ,dummy AS (" /* add deposits to aggregation_tracking */ 115 " INSERT INTO aggregation_tracking" 116 " (batch_deposit_serial_id" 117 " ,wtid_raw)" 118 " SELECT batch_deposit_serial_id,$4" 119 " FROM bdep)" 120 "SELECT" /* calculate totals (deposits, refunds and fees) */ 121 " CAST(COALESCE(SUM((cdep.amount).val),0) AS INT8) AS sum_deposit_value" 122 /* cast needed, otherwise we get NUMBER */ 123 " ,COALESCE(SUM((cdep.amount).frac),0) AS sum_deposit_fraction" /* SUM over INT returns INT8 */ 124 " ,CAST(COALESCE(SUM((ref.refund).val),0) AS INT8) AS sum_refund_value" 125 " ,COALESCE(SUM((ref.refund).frac),0) AS sum_refund_fraction" 126 " ,CAST(COALESCE(SUM((fees.fee).val),0) AS INT8) AS sum_fee_value" 127 " ,COALESCE(SUM((fees.fee).frac),0) AS sum_fee_fraction" 128 " FROM cdep " 129 " FULL OUTER JOIN ref ON (FALSE)" /* We just want all sums */ 130 " FULL OUTER JOIN fees ON (FALSE);"); 131 132 { 133 struct GNUNET_PQ_QueryParam params[] = { 134 GNUNET_PQ_query_param_absolute_time (&now), 135 GNUNET_PQ_query_param_auto_from_type (merchant_pub), 136 GNUNET_PQ_query_param_auto_from_type (h_payto), 137 GNUNET_PQ_query_param_auto_from_type (wtid), 138 GNUNET_PQ_query_param_uint64 (&deposit_shard), 139 GNUNET_PQ_query_param_end 140 }; 141 struct GNUNET_PQ_ResultSpec rs[] = { 142 GNUNET_PQ_result_spec_uint64 ("sum_deposit_value", 143 &sum_deposit_value), 144 GNUNET_PQ_result_spec_uint64 ("sum_deposit_fraction", 145 &sum_deposit_frac), 146 GNUNET_PQ_result_spec_uint64 ("sum_refund_value", 147 &sum_refund_value), 148 GNUNET_PQ_result_spec_uint64 ("sum_refund_fraction", 149 &sum_refund_frac), 150 GNUNET_PQ_result_spec_uint64 ("sum_fee_value", 151 &sum_fee_value), 152 GNUNET_PQ_result_spec_uint64 ("sum_fee_fraction", 153 &sum_fee_frac), 154 GNUNET_PQ_result_spec_end 155 }; 156 157 qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 158 "aggregate", 159 params, 160 rs); 161 } 162 if (qs < 0) 163 { 164 GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR == qs); 165 return qs; 166 } 167 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs) 168 { 169 GNUNET_assert (GNUNET_OK == 170 TALER_amount_set_zero (pg->currency, 171 total)); 172 return qs; 173 } 174 GNUNET_assert (GNUNET_OK == 175 TALER_amount_set_zero (pg->currency, 176 &sum_deposit)); 177 GNUNET_assert (GNUNET_OK == 178 TALER_amount_set_zero (pg->currency, 179 &sum_refund)); 180 GNUNET_assert (GNUNET_OK == 181 TALER_amount_set_zero (pg->currency, 182 &sum_fee)); 183 sum_deposit.value = sum_deposit_frac / TALER_AMOUNT_FRAC_BASE 184 + sum_deposit_value; 185 sum_deposit.fraction = sum_deposit_frac % TALER_AMOUNT_FRAC_BASE; 186 sum_refund.value = sum_refund_frac / TALER_AMOUNT_FRAC_BASE 187 + sum_refund_value; 188 sum_refund.fraction = sum_refund_frac % TALER_AMOUNT_FRAC_BASE; 189 sum_fee.value = sum_fee_frac / TALER_AMOUNT_FRAC_BASE 190 + sum_fee_value; 191 sum_fee.fraction = sum_fee_frac % TALER_AMOUNT_FRAC_BASE; \ 192 GNUNET_assert (0 <= 193 TALER_amount_subtract (&delta, 194 &sum_deposit, 195 &sum_refund)); 196 GNUNET_assert (0 <= 197 TALER_amount_subtract (total, 198 &delta, 199 &sum_fee)); 200 return qs; 201 }