Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2025 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 : * @file src/backenddb/iterate_pending_reports.c
18 : * @brief Implementation of the iterate_pending_reports function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "platform.h"
22 : #include <taler/taler_pq_lib.h>
23 : #include "merchant-database/iterate_pending_reports.h"
24 : #include "helper.h"
25 :
26 :
27 : /**
28 : * Context used for TALER_MERCHANTDB_iterate_pending_reports().
29 : */
30 : struct SelectReportsContext
31 : {
32 : /**
33 : * Function to call with the results.
34 : */
35 : TALER_MERCHANTDB_ReportsPendingCallback cb;
36 :
37 : /**
38 : * Closure for @a cb.
39 : */
40 : void *cb_cls;
41 :
42 : /**
43 : * Did database result extraction fail?
44 : */
45 : bool extract_failed;
46 : };
47 :
48 :
49 : /**
50 : * Function to be called with the results of a SELECT statement
51 : * that has returned @a num_results results about reports.
52 : *
53 : * @param[in,out] cls of type `struct SelectReportsContext *`
54 : * @param result the postgres result
55 : * @param num_results the number of results in @a result
56 : */
57 : static void
58 1 : select_pending_reports_cb (void *cls,
59 : PGresult *result,
60 : unsigned int num_results)
61 : {
62 1 : struct SelectReportsContext *plc = cls;
63 :
64 2 : for (unsigned int i = 0; i < num_results; i++)
65 : {
66 : char *instance_id;
67 : uint64_t report_serial;
68 : char *report_program_section;
69 : char *report_description;
70 : char *mime_type;
71 : struct TALER_MERCHANT_ReportToken report_token;
72 : char *target_address;
73 : struct GNUNET_TIME_Relative frequency;
74 : struct GNUNET_TIME_Relative frequency_shift;
75 : struct GNUNET_TIME_Absolute next_transmission;
76 : bool one_shot;
77 1 : struct GNUNET_PQ_ResultSpec rs[] = {
78 1 : GNUNET_PQ_result_spec_string ("out_merchant_id",
79 : &instance_id),
80 1 : GNUNET_PQ_result_spec_uint64 ("out_report_serial",
81 : &report_serial),
82 1 : GNUNET_PQ_result_spec_string ("out_report_program_section",
83 : &report_program_section),
84 1 : GNUNET_PQ_result_spec_string ("out_report_description",
85 : &report_description),
86 1 : GNUNET_PQ_result_spec_string ("out_mime_type",
87 : &mime_type),
88 1 : GNUNET_PQ_result_spec_auto_from_type ("out_report_token",
89 : &report_token),
90 1 : GNUNET_PQ_result_spec_string ("out_target_address",
91 : &target_address),
92 1 : GNUNET_PQ_result_spec_relative_time ("out_frequency",
93 : &frequency),
94 1 : GNUNET_PQ_result_spec_relative_time ("out_frequency_shift",
95 : &frequency_shift),
96 1 : GNUNET_PQ_result_spec_absolute_time ("out_next_transmission",
97 : &next_transmission),
98 1 : GNUNET_PQ_result_spec_bool ("out_one_shot_hidden",
99 : &one_shot),
100 : GNUNET_PQ_result_spec_end
101 : };
102 :
103 1 : if (GNUNET_OK !=
104 1 : GNUNET_PQ_extract_result (result,
105 : rs,
106 : i))
107 : {
108 0 : GNUNET_break (0);
109 0 : plc->extract_failed = true;
110 0 : return;
111 : }
112 1 : plc->cb (plc->cb_cls,
113 : instance_id,
114 : report_serial,
115 : report_program_section,
116 : report_description,
117 : mime_type,
118 : &report_token,
119 : target_address,
120 : frequency,
121 : frequency_shift,
122 : next_transmission,
123 : one_shot);
124 1 : GNUNET_PQ_cleanup_result (rs);
125 : }
126 : }
127 :
128 :
129 : enum GNUNET_DB_QueryStatus
130 1 : TALER_MERCHANTDB_iterate_pending_reports (
131 : struct TALER_MERCHANTDB_PostgresContext *pg,
132 : TALER_MERCHANTDB_ReportsPendingCallback cb,
133 : void *cb_cls)
134 : {
135 1 : struct SelectReportsContext plc = {
136 : .cb = cb,
137 : .cb_cls = cb_cls,
138 : /* Can be overwritten by the lookup_reports_cb */
139 : .extract_failed = false,
140 : };
141 1 : struct GNUNET_PQ_QueryParam params[] = {
142 : GNUNET_PQ_query_param_end
143 : };
144 : enum GNUNET_DB_QueryStatus qs;
145 :
146 1 : PREPARE (pg,
147 : "iterate_pending_reports",
148 : "SELECT"
149 : " out_merchant_id"
150 : " ,out_report_serial"
151 : " ,out_report_program_section"
152 : " ,out_report_description"
153 : " ,out_mime_type"
154 : " ,out_report_token"
155 : " ,out_target_address"
156 : " ,out_frequency"
157 : " ,out_frequency_shift"
158 : " ,out_next_transmission"
159 : " ,out_one_shot_hidden"
160 : " FROM merchant.lookup_reports_pending()");
161 1 : qs = GNUNET_PQ_eval_prepared_multi_select (
162 : pg->conn,
163 : "iterate_pending_reports",
164 : params,
165 : &select_pending_reports_cb,
166 : &plc);
167 : /* If there was an error inside select_pending_reports_cb, return a hard error. */
168 1 : if (plc.extract_failed)
169 : {
170 0 : GNUNET_break (0);
171 0 : return GNUNET_DB_STATUS_HARD_ERROR;
172 : }
173 1 : return qs;
174 : }
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