Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2025 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 src/auditordb/select_early_aggregations.c
18 : * @brief Implementation of the select_early_aggregations function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/taler_error_codes.h"
22 : #include "taler/taler_pq_lib.h"
23 : #include "auditor-database/select_early_aggregations.h"
24 : #include "pg_helper.h"
25 :
26 :
27 : /**
28 : * Closure for #early_aggregation_cb().
29 : */
30 : struct EarlyAggregationContext
31 : {
32 :
33 : /**
34 : * Function to call for each early aggregation.
35 : */
36 : TALER_AUDITORDB_EarlyAggregationsCallback cb;
37 :
38 : /**
39 : * Closure for @e cb
40 : */
41 : void *cb_cls;
42 :
43 : /**
44 : * Plugin context.
45 : */
46 : struct TALER_AUDITORDB_PostgresContext *pg;
47 :
48 : /**
49 : * Query status to return.
50 : */
51 : enum GNUNET_DB_QueryStatus qs;
52 : };
53 :
54 :
55 : /**
56 : * Helper function for #TALER_AUDITORDB_select_purse_expired().
57 : * To be called with the results of a SELECT statement
58 : * that has returned @a num_results results.
59 : *
60 : * @param cls closure of type `struct EarlyAggregationContext *`
61 : * @param result the postgres result
62 : * @param num_results the number of results in @a result
63 : */
64 : static void
65 0 : early_aggregation_cb (void *cls,
66 : PGresult *result,
67 : unsigned int num_results)
68 : {
69 0 : struct EarlyAggregationContext *eic = cls;
70 0 : struct TALER_AUDITORDB_PostgresContext *pg = eic->pg;
71 :
72 0 : for (unsigned int i = 0; i < num_results; i++)
73 : {
74 : struct TALER_AUDITORDB_EarlyAggregation ea;
75 0 : struct GNUNET_PQ_ResultSpec rs[] = {
76 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
77 : &ea.row_id),
78 0 : GNUNET_PQ_result_spec_uint64 ("batch_deposit_serial_id",
79 : &ea.batch_deposit_serial_id),
80 0 : GNUNET_PQ_result_spec_uint64 ("tracking_serial_id",
81 : &ea.tracking_serial_id),
82 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
83 : &ea.total),
84 0 : GNUNET_PQ_result_spec_bool ("suppressed",
85 : &ea.suppressed),
86 : GNUNET_PQ_result_spec_end
87 : };
88 :
89 : /* just to be safe in case the structure changes */
90 0 : memset (&ea,
91 : 0,
92 : sizeof (ea));
93 0 : if (GNUNET_OK !=
94 0 : GNUNET_PQ_extract_result (result,
95 : rs,
96 : i))
97 : {
98 0 : GNUNET_break (0);
99 0 : eic->qs = GNUNET_DB_STATUS_HARD_ERROR;
100 0 : return;
101 : }
102 0 : eic->cb (eic->cb_cls,
103 : &ea);
104 : }
105 0 : eic->qs = num_results;
106 : }
107 :
108 :
109 : enum GNUNET_DB_QueryStatus
110 0 : TALER_AUDITORDB_select_early_aggregations (struct
111 : TALER_AUDITORDB_PostgresContext *pg,
112 : int64_t limit,
113 : uint64_t offset,
114 : bool return_suppressed,
115 : TALER_AUDITORDB_EarlyAggregationsCallback
116 : cb,
117 : void *cb_cls)
118 : {
119 0 : uint64_t ulimit = (limit < 0) ? -limit : limit;
120 0 : struct GNUNET_PQ_QueryParam params[] = {
121 0 : GNUNET_PQ_query_param_uint64 (&offset),
122 0 : GNUNET_PQ_query_param_uint64 (&ulimit),
123 0 : GNUNET_PQ_query_param_bool (return_suppressed),
124 : GNUNET_PQ_query_param_end
125 : };
126 0 : struct EarlyAggregationContext eic = {
127 : .cb = cb,
128 : .cb_cls = cb_cls,
129 : .pg = pg
130 : };
131 : enum GNUNET_DB_QueryStatus qs;
132 :
133 0 : PREPARE (pg,
134 : "auditor_select_early_aggregations_asc",
135 : "SELECT"
136 : " row_id"
137 : ",batch_deposit_serial_id"
138 : ",tracking_serial_id"
139 : ",amount"
140 : ",suppressed"
141 : " FROM auditor_early_aggregations"
142 : " WHERE row_id > $1"
143 : " AND ($3 OR NOT suppressed)"
144 : " ORDER BY row_id ASC"
145 : " LIMIT $2;");
146 0 : PREPARE (pg,
147 : "auditor_select_early_aggregations_desc",
148 : "SELECT"
149 : " row_id"
150 : ",batch_deposit_serial_id"
151 : ",tracking_serial_id"
152 : ",amount"
153 : ",suppressed"
154 : " FROM auditor_early_aggregations"
155 : " WHERE row_id < $1"
156 : " AND ($3 OR NOT suppressed)"
157 : " ORDER BY row_id DESC"
158 : " LIMIT $2;");
159 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
160 : pg->conn,
161 : (limit < 0)
162 : ? "auditor_select_early_aggregations_desc"
163 : : "auditor_select_early_aggregations_asc ",
164 : params,
165 : &early_aggregation_cb,
166 : &eic);
167 0 : if (0 > qs)
168 0 : return qs;
169 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != eic.qs);
170 0 : return eic.qs;
171 : }
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