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/platform.h"
17 : #include "taler/taler_error_codes.h"
18 : #include "taler/taler_dbevents.h"
19 : #include "taler/taler_pq_lib.h"
20 : #include "pg_helper.h"
21 : #include "pg_get_emergency_by_count.h"
22 :
23 :
24 : /**
25 : * Closure for #emergency_cb().
26 : */
27 : struct EmergencyByCountContext
28 : {
29 :
30 : /**
31 : * Function to call for each deposit confirmation.
32 : */
33 : TALER_AUDITORDB_EmergenciesByCountCallback cb;
34 :
35 : /**
36 : * Closure for @e cb
37 : */
38 : void *cb_cls;
39 :
40 : /**
41 : * Plugin context.
42 : */
43 : struct PostgresClosure *pg;
44 :
45 : /**
46 : * Query status to return.
47 : */
48 : enum GNUNET_DB_QueryStatus qs;
49 : };
50 :
51 :
52 : /**
53 : * Helper function for #TAH_PG_get_emergency_by_count().
54 : * To be called with the results of a SELECT statement
55 : * that has returned @a num_results results.
56 : *
57 : * @param cls closure of type `struct Emergency *`
58 : * @param result the postgres result
59 : * @param num_results the number of results in @a result
60 : */
61 : static void
62 4 : emergency_by_count_cb (void *cls,
63 : PGresult *result,
64 : unsigned int num_results)
65 : {
66 4 : struct EmergencyByCountContext *dcc = cls;
67 4 : struct PostgresClosure *pg = dcc->pg;
68 :
69 6 : for (unsigned int i = 0; i < num_results; i++)
70 : {
71 : struct TALER_AUDITORDB_EmergenciesByCount dc;
72 2 : struct GNUNET_PQ_ResultSpec rs[] = {
73 2 : GNUNET_PQ_result_spec_uint64 ("row_id",
74 : &dc.row_id),
75 2 : GNUNET_PQ_result_spec_auto_from_type ("denompub_h",
76 : &dc.denompub_h),
77 2 : GNUNET_PQ_result_spec_uint64 ("num_issued",
78 : &dc.num_issued),
79 2 : GNUNET_PQ_result_spec_uint64 ("num_known",
80 : &dc.num_known),
81 2 : TALER_PQ_RESULT_SPEC_AMOUNT ("risk",
82 : &dc.risk),
83 2 : GNUNET_PQ_result_spec_absolute_time ("start",
84 : &dc.start),
85 2 : GNUNET_PQ_result_spec_absolute_time ("deposit_end",
86 : &dc.deposit_end),
87 2 : TALER_PQ_RESULT_SPEC_AMOUNT ("value",
88 : &dc.value),
89 2 : GNUNET_PQ_result_spec_bool ("suppressed",
90 : &dc.suppressed),
91 : GNUNET_PQ_result_spec_end
92 : };
93 : enum GNUNET_GenericReturnValue rval;
94 :
95 2 : if (GNUNET_OK !=
96 2 : GNUNET_PQ_extract_result (result,
97 : rs,
98 : i))
99 : {
100 0 : GNUNET_break (0);
101 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
102 0 : return;
103 : }
104 2 : dcc->qs = i + 1;
105 2 : rval = dcc->cb (dcc->cb_cls,
106 : &dc);
107 2 : GNUNET_PQ_cleanup_result (rs);
108 2 : if (GNUNET_OK != rval)
109 0 : break;
110 : }
111 : }
112 :
113 :
114 : enum GNUNET_DB_QueryStatus
115 4 : TAH_PG_get_emergency_by_count (
116 : void *cls,
117 : int64_t limit,
118 : uint64_t offset,
119 : bool return_suppressed,
120 : TALER_AUDITORDB_EmergenciesByCountCallback cb,
121 : void *cb_cls)
122 : {
123 4 : struct PostgresClosure *pg = cls;
124 4 : uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit);
125 4 : struct GNUNET_PQ_QueryParam params[] = {
126 4 : GNUNET_PQ_query_param_uint64 (&offset),
127 4 : GNUNET_PQ_query_param_bool (return_suppressed),
128 4 : GNUNET_PQ_query_param_uint64 (&plimit),
129 : GNUNET_PQ_query_param_end
130 : };
131 4 : struct EmergencyByCountContext dcc = {
132 : .cb = cb,
133 : .cb_cls = cb_cls,
134 : .pg = pg
135 : };
136 : enum GNUNET_DB_QueryStatus qs;
137 :
138 4 : PREPARE (pg,
139 : "auditor_emergency_by_count_get_desc",
140 : "SELECT"
141 : " row_id"
142 : ",denompub_h"
143 : ",num_issued"
144 : ",num_known"
145 : ",risk"
146 : ",start"
147 : ",deposit_end"
148 : ",value"
149 : ",suppressed"
150 : " FROM auditor_emergency_by_count"
151 : " WHERE (row_id < $1)"
152 : " AND ($2 OR NOT suppressed)"
153 : " ORDER BY row_id DESC"
154 : " LIMIT $3"
155 : );
156 4 : PREPARE (pg,
157 : "auditor_emergency_by_count_get_asc",
158 : "SELECT"
159 : " row_id"
160 : ",denompub_h"
161 : ",num_issued"
162 : ",num_known"
163 : ",risk"
164 : ",start"
165 : ",deposit_end"
166 : ",value"
167 : ",suppressed"
168 : " FROM auditor_emergency_by_count"
169 : " WHERE (row_id > $1)"
170 : " AND ($2 OR NOT suppressed)"
171 : " ORDER BY row_id ASC"
172 : " LIMIT $3"
173 : );
174 4 : qs = GNUNET_PQ_eval_prepared_multi_select (
175 : pg->conn,
176 : (limit > 0)
177 : ? "auditor_emergency_by_count_get_asc"
178 : : "auditor_emergency_by_count_get_desc",
179 : params,
180 : &emergency_by_count_cb,
181 : &dcc);
182 4 : if (qs > 0)
183 1 : return dcc.qs;
184 3 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
185 3 : return qs;
186 : }
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