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_pq_lib.h"
18 : #include "pg_helper.h"
19 : #include "auditor-database/iterate_emergencies_by_count.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 #emergency_cb().
31 : */
32 : struct EmergencyByCountContext
33 : {
34 :
35 : /**
36 : * Function to call for each deposit confirmation.
37 : */
38 : TALER_AUDITORDB_EmergenciesByCountCallback 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_emergencies_by_count().
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 Emergency *`
63 : * @param result the postgres result
64 : * @param num_results the number of results in @a result
65 : */
66 : static void
67 0 : emergency_by_count_cb (void *cls,
68 : PGresult *result,
69 : unsigned int num_results)
70 : {
71 0 : struct EmergencyByCountContext *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_EmergenciesByCount 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 ("denompub_h",
81 : &dc.denompub_h),
82 0 : GNUNET_PQ_result_spec_uint64 ("num_issued",
83 : &dc.num_issued),
84 0 : GNUNET_PQ_result_spec_uint64 ("num_known",
85 : &dc.num_known),
86 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("risk",
87 : &dc.risk),
88 0 : GNUNET_PQ_result_spec_absolute_time ("start",
89 : &dc.start),
90 0 : GNUNET_PQ_result_spec_absolute_time ("deposit_end",
91 : &dc.deposit_end),
92 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("value",
93 : &dc.value),
94 0 : GNUNET_PQ_result_spec_bool ("suppressed",
95 : &dc.suppressed),
96 : GNUNET_PQ_result_spec_end
97 : };
98 : enum GNUNET_GenericReturnValue rval;
99 :
100 0 : if (GNUNET_OK !=
101 0 : GNUNET_PQ_extract_result (result,
102 : rs,
103 : i))
104 : {
105 0 : GNUNET_break (0);
106 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
107 0 : return;
108 : }
109 0 : dcc->qs = i + 1;
110 0 : rval = dcc->cb (dcc->cb_cls,
111 : &dc);
112 0 : GNUNET_PQ_cleanup_result (rs);
113 0 : if (GNUNET_OK != rval)
114 0 : break;
115 : }
116 : }
117 :
118 :
119 : enum GNUNET_DB_QueryStatus
120 0 : TALER_AUDITORDB_iterate_emergencies_by_count (struct
121 : TALER_AUDITORDB_PostgresContext *
122 : pg,
123 : int64_t limit,
124 : uint64_t offset,
125 : bool return_suppressed,
126 : TALER_AUDITORDB_EmergenciesByCountCallback
127 : cb,
128 : void *cb_cls)
129 : {
130 0 : uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS,
131 : TALER_AUDITORDB_abs_limit (limit));
132 0 : struct GNUNET_PQ_QueryParam params[] = {
133 0 : GNUNET_PQ_query_param_uint64 (&offset),
134 0 : GNUNET_PQ_query_param_bool (return_suppressed),
135 0 : GNUNET_PQ_query_param_uint64 (&plimit),
136 : GNUNET_PQ_query_param_end
137 : };
138 0 : struct EmergencyByCountContext dcc = {
139 : .cb = cb,
140 : .cb_cls = cb_cls,
141 : .pg = pg
142 : };
143 : enum GNUNET_DB_QueryStatus qs;
144 :
145 0 : PREPARE (pg,
146 : "iterate_emergencies_by_count_emergency_by_count_get_desc",
147 : "SELECT"
148 : " row_id"
149 : ",denompub_h"
150 : ",num_issued"
151 : ",num_known"
152 : ",risk"
153 : ",start"
154 : ",deposit_end"
155 : ",value"
156 : ",suppressed"
157 : " FROM auditor_emergency_by_count"
158 : " WHERE (row_id < $1)"
159 : " AND ($2 OR NOT suppressed)"
160 : " ORDER BY row_id DESC"
161 : " LIMIT $3"
162 : );
163 0 : PREPARE (pg,
164 : "iterate_emergencies_by_count_emergency_by_count_get_asc",
165 : "SELECT"
166 : " row_id"
167 : ",denompub_h"
168 : ",num_issued"
169 : ",num_known"
170 : ",risk"
171 : ",start"
172 : ",deposit_end"
173 : ",value"
174 : ",suppressed"
175 : " FROM auditor_emergency_by_count"
176 : " WHERE (row_id > $1)"
177 : " AND ($2 OR NOT suppressed)"
178 : " ORDER BY row_id ASC"
179 : " LIMIT $3"
180 : );
181 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
182 : pg->conn,
183 : (limit > 0)
184 : ? "iterate_emergencies_by_count_emergency_by_count_get_asc"
185 : : "iterate_emergencies_by_count_emergency_by_count_get_desc",
186 : params,
187 : &emergency_by_count_cb,
188 : &dcc);
189 0 : if (qs > 0)
190 0 : return dcc.qs;
191 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
192 0 : return qs;
193 : }
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