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_error_codes.h"
17 : #include "taler/taler_dbevents.h"
18 : #include "taler/taler_pq_lib.h"
19 : #include "pg_helper.h"
20 : #include "auditor-database/iterate_auditor_closure_lags.h"
21 :
22 :
23 : /**
24 : * Hard upper bound on the number of records returned by a single
25 : * call, regardless of the limit requested by the client.
26 : */
27 : #define MAX_RECORDS 50000
28 :
29 :
30 : struct ClosureLagsContext
31 : {
32 :
33 : /**
34 : * Function to call for each closure lag .
35 : */
36 : TALER_AUDITORDB_ClosureLagsCallback 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_iterate_auditor_closure_lags().
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 ClosureLagsContext *`
61 : * @param result the postgres result
62 : * @param num_results the number of results in @a result
63 : */
64 : static void
65 0 : closure_lags_cb (void *cls,
66 : PGresult *result,
67 : unsigned int num_results)
68 : {
69 0 : struct ClosureLagsContext *dcc = cls;
70 0 : struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg;
71 :
72 0 : for (unsigned int i = 0; i < num_results; i++)
73 : {
74 : struct TALER_AUDITORDB_ClosureLags dc;
75 0 : struct GNUNET_PQ_ResultSpec rs[] = {
76 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
77 : &dc.row_id),
78 0 : GNUNET_PQ_result_spec_uint64 ("problem_row_id",
79 : &dc.problem_row_id),
80 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
81 : &dc.amount),
82 0 : GNUNET_PQ_result_spec_absolute_time ("deadline",
83 : &dc.deadline),
84 0 : GNUNET_PQ_result_spec_auto_from_type ("wtid",
85 : &dc.wtid),
86 0 : GNUNET_PQ_result_spec_string ("account",
87 : &dc.account.full_payto),
88 0 : GNUNET_PQ_result_spec_bool ("suppressed",
89 : &dc.suppressed),
90 : GNUNET_PQ_result_spec_end
91 : };
92 : enum GNUNET_GenericReturnValue rval;
93 :
94 0 : if (GNUNET_OK !=
95 0 : GNUNET_PQ_extract_result (result,
96 : rs,
97 : i))
98 : {
99 0 : GNUNET_break (0);
100 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
101 0 : return;
102 : }
103 0 : dcc->qs = i + 1;
104 0 : rval = dcc->cb (dcc->cb_cls,
105 : &dc);
106 0 : GNUNET_PQ_cleanup_result (rs);
107 0 : if (GNUNET_OK != rval)
108 0 : break;
109 : }
110 : }
111 :
112 :
113 : enum GNUNET_DB_QueryStatus
114 0 : TALER_AUDITORDB_iterate_auditor_closure_lags (
115 : struct TALER_AUDITORDB_PostgresContext *pg,
116 : int64_t limit,
117 : uint64_t offset,
118 : bool return_suppressed,
119 : TALER_AUDITORDB_ClosureLagsCallback cb,
120 : void *cb_cls)
121 : {
122 0 : uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS,
123 : TALER_AUDITORDB_abs_limit (limit));
124 0 : struct GNUNET_PQ_QueryParam params[] = {
125 0 : GNUNET_PQ_query_param_uint64 (&offset),
126 0 : GNUNET_PQ_query_param_bool (return_suppressed),
127 0 : GNUNET_PQ_query_param_uint64 (&plimit),
128 : GNUNET_PQ_query_param_end
129 : };
130 0 : struct ClosureLagsContext dcc = {
131 : .cb = cb,
132 : .cb_cls = cb_cls,
133 : .pg = pg
134 : };
135 : enum GNUNET_DB_QueryStatus qs;
136 :
137 0 : PREPARE (pg,
138 : "iterate_auditor_closure_lags_desc",
139 : "SELECT"
140 : " row_id"
141 : ",problem_row_id"
142 : ",amount"
143 : ",deadline"
144 : ",wtid"
145 : ",account"
146 : ",suppressed"
147 : " FROM auditor_closure_lags"
148 : " WHERE (row_id < $1)"
149 : " AND ($2 OR NOT suppressed)"
150 : " ORDER BY row_id DESC"
151 : " LIMIT $3"
152 : );
153 0 : PREPARE (pg,
154 : "iterate_auditor_closure_lags_asc",
155 : "SELECT"
156 : " row_id"
157 : ",problem_row_id"
158 : ",amount"
159 : ",deadline"
160 : ",wtid"
161 : ",account"
162 : ",suppressed"
163 : " FROM auditor_closure_lags"
164 : " WHERE (row_id > $1)"
165 : " AND ($2 OR NOT suppressed)"
166 : " ORDER BY row_id ASC"
167 : " LIMIT $3"
168 : );
169 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
170 : pg->conn,
171 : (limit > 0)
172 : ? "iterate_auditor_closure_lags_asc"
173 : : "iterate_auditor_closure_lags_desc",
174 : params,
175 : &closure_lags_cb,
176 : &dcc);
177 0 : if (qs > 0)
178 0 : return dcc.qs;
179 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
180 0 : return qs;
181 : }
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