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 :
17 : #include "taler/taler_pq_lib.h"
18 : #include "pg_helper.h"
19 : #include "auditor-database/iterate_row_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 #deposit_confirmation_cb().
31 : */
32 : struct RowInconsistencyContext
33 : {
34 :
35 : /**
36 : * Function to call for each deposit confirmation.
37 : */
38 : TALER_AUDITORDB_RowInconsistencyCallback 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_row_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 DepositConfirmationContext *`
63 : * @param result the postgres result
64 : * @param num_results the number of results in @a result
65 : */
66 : static void
67 0 : row_inconsistency_cb (void *cls,
68 : PGresult *result,
69 : unsigned int num_results)
70 : {
71 0 : struct RowInconsistencyContext *dcc = cls;
72 :
73 0 : for (unsigned int i = 0; i < num_results; i++)
74 : {
75 : uint64_t serial_id;
76 :
77 : struct TALER_AUDITORDB_RowInconsistency dc;
78 :
79 0 : struct GNUNET_PQ_ResultSpec rs[] = {
80 0 : GNUNET_PQ_result_spec_uint64 ("row_id", &serial_id),
81 :
82 0 : GNUNET_PQ_result_spec_string ("row_table", &dc.row_table),
83 0 : GNUNET_PQ_result_spec_string ("diagnostic", &dc.diagnostic),
84 0 : GNUNET_PQ_result_spec_bool ("suppressed", &dc.suppressed),
85 :
86 :
87 : GNUNET_PQ_result_spec_end
88 : };
89 : enum GNUNET_GenericReturnValue rval;
90 :
91 0 : if (GNUNET_OK !=
92 0 : 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 :
101 0 : dcc->qs = i + 1;
102 :
103 :
104 0 : rval = dcc->cb (dcc->cb_cls,
105 : serial_id,
106 : &dc);
107 0 : GNUNET_PQ_cleanup_result (rs);
108 0 : if (GNUNET_OK != rval)
109 0 : break;
110 : }
111 : }
112 :
113 :
114 : enum GNUNET_DB_QueryStatus
115 0 : TALER_AUDITORDB_iterate_row_inconsistencies (
116 : struct TALER_AUDITORDB_PostgresContext *pg,
117 : int64_t limit,
118 : uint64_t offset,
119 : bool return_suppressed, // maybe not needed
120 : TALER_AUDITORDB_RowInconsistencyCallback cb,
121 : void *cb_cls)
122 : {
123 :
124 0 : uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS,
125 : TALER_AUDITORDB_abs_limit (limit));
126 0 : struct GNUNET_PQ_QueryParam params[] = {
127 0 : GNUNET_PQ_query_param_uint64 (&offset),
128 0 : GNUNET_PQ_query_param_bool (return_suppressed),
129 0 : GNUNET_PQ_query_param_uint64 (&plimit),
130 : GNUNET_PQ_query_param_end
131 : };
132 0 : struct RowInconsistencyContext dcc = {
133 : .cb = cb,
134 : .cb_cls = cb_cls,
135 : .pg = pg
136 : };
137 : enum GNUNET_DB_QueryStatus qs;
138 :
139 :
140 0 : PREPARE (pg,
141 : "iterate_row_inconsistencies_inconsistency_select_desc",
142 : "SELECT"
143 : " row_id"
144 : ",row_table"
145 : ",diagnostic"
146 : ",suppressed"
147 : " FROM auditor_row_inconsistency"
148 : " WHERE (row_id < $1)"
149 : " AND ($2 OR suppressed is false)"
150 : " ORDER BY row_id DESC"
151 : " LIMIT $3"
152 : );
153 0 : PREPARE (pg,
154 : "iterate_row_inconsistencies_inconsistency_select_asc",
155 : "SELECT"
156 : " row_id"
157 : ",row_table"
158 : ",diagnostic"
159 : ",suppressed"
160 : " FROM auditor_row_inconsistency"
161 : " WHERE (row_id > $1)"
162 : " AND ($2 OR suppressed is false)"
163 : " ORDER BY row_id ASC"
164 : " LIMIT $3"
165 : );
166 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
167 : pg->conn,
168 : (limit > 0)
169 : ? "iterate_row_inconsistencies_inconsistency_select_asc"
170 : : "iterate_row_inconsistencies_inconsistency_select_desc",
171 : params,
172 : &row_inconsistency_cb,
173 : &dcc);
174 :
175 0 : if (qs > 0)
176 0 : return dcc.qs;
177 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
178 0 : return qs;
179 : }
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