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