Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2024 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 : #include "taler/taler_pq_lib.h"
17 : #include "pg_helper.h"
18 : #include \
19 : "auditor-database/iterate_reserve_balance_insufficient_inconsistencies.h"
20 :
21 :
22 : /**
23 : * Hard upper bound on the number of records returned by a single
24 : * call, regardless of the limit requested by the client.
25 : */
26 : #define MAX_RECORDS 50000
27 :
28 :
29 : /**
30 : * Closure for #reserve_balance_insufficient_inconsistency_cb().
31 : */
32 : struct ReserveBalanceInsufficientInconsistencyContext
33 : {
34 :
35 : /**
36 : * Function to call for each ReserveBalanceInsufficientInconsistency.
37 : */
38 : TALER_AUDITORDB_ReserveBalanceInsufficientInconsistencyCallback cb;
39 :
40 : /**
41 : * Closure for @e cb
42 : */
43 : void *cb_cls;
44 :
45 : /**
46 : * Plugin context.
47 : */
48 : struct TALER_AUDITORDB_PostgresContext *pg;
49 :
50 : /**
51 : * Query status to return.
52 : */
53 : enum GNUNET_DB_QueryStatus qs;
54 : };
55 :
56 :
57 : /**
58 : * Helper function for #TALER_AUDITORDB_iterate_reserve_balance_insufficient_inconsistencies().
59 : * To be called with the results of a SELECT statement
60 : * that has returned @a num_results results.
61 : *
62 : * @param cls closure of type `struct ReserveBalanceInsufficientInconsistency *`
63 : * @param result the postgres result
64 : * @param num_results the number of results in @a result
65 : */
66 : static void
67 0 : reserve_balance_insufficient_inconsistency_cb (void *cls,
68 : PGresult *result,
69 : unsigned int num_results)
70 : {
71 0 : struct ReserveBalanceInsufficientInconsistencyContext *dcc = cls;
72 0 : struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg;
73 :
74 0 : for (unsigned int i = 0; i < num_results; i++)
75 : {
76 : struct TALER_AUDITORDB_ReserveBalanceInsufficientInconsistency dc;
77 0 : struct GNUNET_PQ_ResultSpec rs[] = {
78 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
79 : &dc.row_id),
80 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
81 : &dc.reserve_pub),
82 0 : GNUNET_PQ_result_spec_bool ("inconsistency_gain",
83 : &dc.inconsistency_gain),
84 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("inconsistency_amount",
85 : &dc.inconsistency_amount),
86 0 : GNUNET_PQ_result_spec_bool ("suppressed",
87 : &dc.suppressed),
88 : GNUNET_PQ_result_spec_end
89 : };
90 : enum GNUNET_GenericReturnValue rval;
91 :
92 0 : if (GNUNET_OK !=
93 0 : GNUNET_PQ_extract_result (result,
94 : rs,
95 : i))
96 : {
97 0 : GNUNET_break (0);
98 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
99 0 : return;
100 : }
101 0 : dcc->qs = i + 1;
102 0 : rval = dcc->cb (dcc->cb_cls,
103 : &dc);
104 0 : GNUNET_PQ_cleanup_result (rs);
105 0 : if (GNUNET_OK != rval)
106 0 : break;
107 : }
108 : }
109 :
110 :
111 : enum GNUNET_DB_QueryStatus
112 0 : TALER_AUDITORDB_iterate_reserve_balance_insufficient_inconsistencies (struct
113 : TALER_AUDITORDB_PostgresContext
114 : *pg,
115 : int64_t
116 : limit,
117 : uint64_t
118 : offset,
119 : bool
120 : return_suppressed
121 : ,
122 : TALER_AUDITORDB_ReserveBalanceInsufficientInconsistencyCallback
123 : cb,
124 : void *
125 : cb_cls)
126 : {
127 0 : uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS,
128 : TALER_AUDITORDB_abs_limit (limit));
129 0 : struct GNUNET_PQ_QueryParam params[] = {
130 0 : GNUNET_PQ_query_param_uint64 (&offset),
131 0 : GNUNET_PQ_query_param_bool (return_suppressed),
132 0 : GNUNET_PQ_query_param_uint64 (&plimit),
133 : GNUNET_PQ_query_param_end
134 : };
135 0 : struct ReserveBalanceInsufficientInconsistencyContext dcc = {
136 : .cb = cb,
137 : .cb_cls = cb_cls,
138 : .pg = pg
139 : };
140 : enum GNUNET_DB_QueryStatus qs;
141 :
142 0 : PREPARE (pg,
143 : "iterate_reserve_balance_insufficient_inconsistencies_desc",
144 : "SELECT"
145 : " row_id"
146 : ",reserve_pub"
147 : ",inconsistency_gain"
148 : ",inconsistency_amount"
149 : ",suppressed"
150 : " FROM auditor_reserve_balance_insufficient_inconsistency"
151 : " WHERE (row_id < $1)"
152 : " AND ($2 OR NOT suppressed)"
153 : " ORDER BY row_id DESC"
154 : " LIMIT $3"
155 : );
156 0 : PREPARE (pg,
157 : "iterate_reserve_balance_insufficient_inconsistencies_asc",
158 : "SELECT"
159 : " row_id"
160 : ",reserve_pub"
161 : ",inconsistency_gain"
162 : ",inconsistency_amount"
163 : ",suppressed"
164 : " FROM auditor_reserve_balance_insufficient_inconsistency"
165 : " WHERE (row_id > $1)"
166 : " AND ($2 OR NOT suppressed)"
167 : " ORDER BY row_id ASC"
168 : " LIMIT $3"
169 : );
170 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
171 : pg->conn,
172 : (limit > 0)
173 : ?
174 : "iterate_reserve_balance_insufficient_inconsistencies_asc"
175 : :
176 : "iterate_reserve_balance_insufficient_inconsistencies_desc",
177 : params,
178 : &reserve_balance_insufficient_inconsistency_cb,
179 : &dcc);
180 0 : if (qs > 0)
181 0 : return dcc.qs;
182 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
183 0 : return qs;
184 : }
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