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_row_minor_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 : struct RowMinorInconsistenciesContext
29 : {
30 :
31 : /**
32 : * Function to call for each bad sig loss.
33 : */
34 : TALER_AUDITORDB_RowMinorInconsistenciesCallback cb;
35 :
36 : /**
37 : * Closure for @e cb
38 : */
39 : void *cb_cls;
40 :
41 : /**
42 : * Plugin context.
43 : */
44 : struct TALER_AUDITORDB_PostgresContext *pg;
45 :
46 : /**
47 : * Query status to return.
48 : */
49 : enum GNUNET_DB_QueryStatus qs;
50 : };
51 :
52 :
53 : /**
54 : * Helper function for #TALER_AUDITORDB_iterate_row_minor_inconsistencies().
55 : * To be called with the results of a SELECT statement
56 : * that has returned @a num_results results.
57 : *
58 : * @param cls closure of type `struct RowMinorInconsistenciesContext *`
59 : * @param result the postgres result
60 : * @param num_results the number of results in @a result
61 : */
62 : static void
63 0 : row_minor_inconsistencies_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 0 : struct RowMinorInconsistenciesContext *dcc = cls;
68 :
69 0 : for (unsigned int i = 0; i < num_results; i++)
70 : {
71 : struct TALER_AUDITORDB_RowMinorInconsistencies dc;
72 0 : struct GNUNET_PQ_ResultSpec rs[] = {
73 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
74 : &dc.row_id),
75 0 : GNUNET_PQ_result_spec_string ("row_table",
76 : &dc.row_table),
77 0 : GNUNET_PQ_result_spec_uint64 ("problem_row",
78 : &dc.problem_row),
79 0 : GNUNET_PQ_result_spec_string ("diagnostic",
80 : &dc.diagnostic),
81 0 : GNUNET_PQ_result_spec_bool ("suppressed",
82 : &dc.suppressed),
83 : GNUNET_PQ_result_spec_end
84 : };
85 : enum GNUNET_GenericReturnValue rval;
86 :
87 0 : if (GNUNET_OK !=
88 0 : GNUNET_PQ_extract_result (result,
89 : rs,
90 : i))
91 : {
92 0 : GNUNET_break (0);
93 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
94 0 : return;
95 : }
96 0 : dcc->qs = i + 1;
97 0 : rval = dcc->cb (dcc->cb_cls,
98 : &dc);
99 0 : GNUNET_PQ_cleanup_result (rs);
100 0 : if (GNUNET_OK != rval)
101 0 : break;
102 : }
103 : }
104 :
105 :
106 : enum GNUNET_DB_QueryStatus
107 0 : TALER_AUDITORDB_iterate_row_minor_inconsistencies (
108 : struct TALER_AUDITORDB_PostgresContext *pg,
109 : int64_t limit,
110 : uint64_t offset,
111 : bool return_suppressed,
112 : TALER_AUDITORDB_RowMinorInconsistenciesCallback cb,
113 : void *cb_cls)
114 : {
115 0 : uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS,
116 : TALER_AUDITORDB_abs_limit (limit));
117 0 : struct GNUNET_PQ_QueryParam params[] = {
118 0 : GNUNET_PQ_query_param_uint64 (&offset),
119 0 : GNUNET_PQ_query_param_bool (return_suppressed),
120 0 : GNUNET_PQ_query_param_uint64 (&plimit),
121 : GNUNET_PQ_query_param_end
122 : };
123 0 : struct RowMinorInconsistenciesContext dcc = {
124 : .cb = cb,
125 : .cb_cls = cb_cls,
126 : .pg = pg
127 : };
128 : enum GNUNET_DB_QueryStatus qs;
129 :
130 0 : PREPARE (pg,
131 : "iterate_row_minor_inconsistencies_desc",
132 : "SELECT"
133 : " row_id"
134 : ",problem_row"
135 : ",row_table"
136 : ",diagnostic"
137 : ",suppressed"
138 : " FROM auditor_row_minor_inconsistencies"
139 : " WHERE (row_id < $1)"
140 : " AND ($2 OR NOT suppressed)"
141 : " ORDER BY row_id DESC"
142 : " LIMIT $3"
143 : );
144 0 : PREPARE (pg,
145 : "iterate_row_minor_inconsistencies_asc",
146 : "SELECT"
147 : " row_id"
148 : ",problem_row"
149 : ",row_table"
150 : ",diagnostic"
151 : ",suppressed"
152 : " FROM auditor_row_minor_inconsistencies"
153 : " WHERE (row_id > $1)"
154 : " AND ($2 OR NOT suppressed)"
155 : " ORDER BY row_id ASC"
156 : " LIMIT $3"
157 : );
158 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
159 : pg->conn,
160 : (limit > 0)
161 : ? "iterate_row_minor_inconsistencies_asc"
162 : : "iterate_row_minor_inconsistencies_desc",
163 : params,
164 : &row_minor_inconsistencies_cb,
165 : &dcc);
166 0 : if (qs > 0)
167 0 : return dcc.qs;
168 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
169 0 : return qs;
170 : }
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