Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022, 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 : /**
17 : * @file exchangedb/pg_select_reserves_in_above_serial_id_by_account.c
18 : * @brief Implementation of the select_reserves_in_above_serial_id_by_account function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/platform.h"
22 : #include "taler/taler_error_codes.h"
23 : #include "taler/taler_dbevents.h"
24 : #include "taler/taler_pq_lib.h"
25 : #include "pg_select_reserves_in_above_serial_id_by_account.h"
26 : #include "pg_helper.h"
27 :
28 :
29 : /**
30 : * Closure for #reserves_in_serial_helper_cb().
31 : */
32 : struct ReservesInSerialContext
33 : {
34 :
35 : /**
36 : * Callback to call.
37 : */
38 : TALER_EXCHANGEDB_ReserveInCallback cb;
39 :
40 : /**
41 : * Closure for @e cb.
42 : */
43 : void *cb_cls;
44 :
45 : /**
46 : * Plugin context.
47 : */
48 : struct PostgresClosure *pg;
49 :
50 : /**
51 : * Status code, set to #GNUNET_SYSERR on hard errors.
52 : */
53 : enum GNUNET_GenericReturnValue status;
54 : };
55 :
56 :
57 : /**
58 : * Helper function to be called with the results of a SELECT statement
59 : * that has returned @a num_results results.
60 : *
61 : * @param cls closure of type `struct ReservesInSerialContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 68 : reserves_in_serial_helper_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 68 : struct ReservesInSerialContext *risc = cls;
71 68 : struct PostgresClosure *pg = risc->pg;
72 :
73 136 : for (unsigned int i = 0; i<num_results; i++)
74 : {
75 : struct TALER_ReservePublicKeyP reserve_pub;
76 : struct TALER_Amount credit;
77 : struct TALER_FullPayto sender_account_details;
78 : struct GNUNET_TIME_Timestamp execution_date;
79 : uint64_t rowid;
80 : uint64_t wire_reference;
81 68 : struct GNUNET_PQ_ResultSpec rs[] = {
82 68 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
83 : &reserve_pub),
84 68 : GNUNET_PQ_result_spec_uint64 ("wire_reference",
85 : &wire_reference),
86 68 : TALER_PQ_RESULT_SPEC_AMOUNT ("credit",
87 : &credit),
88 68 : GNUNET_PQ_result_spec_timestamp ("execution_date",
89 : &execution_date),
90 68 : GNUNET_PQ_result_spec_string ("sender_account_details",
91 : &sender_account_details.full_payto),
92 68 : GNUNET_PQ_result_spec_uint64 ("reserve_in_serial_id",
93 : &rowid),
94 : GNUNET_PQ_result_spec_end
95 : };
96 : enum GNUNET_GenericReturnValue ret;
97 :
98 68 : if (GNUNET_OK !=
99 68 : GNUNET_PQ_extract_result (result,
100 : rs,
101 : i))
102 : {
103 0 : GNUNET_break (0);
104 0 : risc->status = GNUNET_SYSERR;
105 0 : return;
106 : }
107 68 : ret = risc->cb (risc->cb_cls,
108 : rowid,
109 : &reserve_pub,
110 : &credit,
111 : sender_account_details,
112 : wire_reference,
113 : execution_date);
114 68 : GNUNET_PQ_cleanup_result (rs);
115 68 : if (GNUNET_OK != ret)
116 0 : break;
117 : }
118 : }
119 :
120 :
121 : enum GNUNET_DB_QueryStatus
122 68 : TEH_PG_select_reserves_in_above_serial_id_by_account (
123 : void *cls,
124 : const char *account_name,
125 : uint64_t serial_id,
126 : TALER_EXCHANGEDB_ReserveInCallback cb,
127 : void *cb_cls)
128 : {
129 68 : struct PostgresClosure *pg = cls;
130 68 : struct GNUNET_PQ_QueryParam params[] = {
131 68 : GNUNET_PQ_query_param_uint64 (&serial_id),
132 68 : GNUNET_PQ_query_param_string (account_name),
133 : GNUNET_PQ_query_param_end
134 : };
135 68 : struct ReservesInSerialContext risc = {
136 : .cb = cb,
137 : .cb_cls = cb_cls,
138 : .pg = pg,
139 : .status = GNUNET_OK
140 : };
141 : enum GNUNET_DB_QueryStatus qs;
142 :
143 68 : PREPARE (pg,
144 : "select_reserves_in_above_serial_id_by_account",
145 : "SELECT"
146 : " reserves.reserve_pub"
147 : ",wire_reference"
148 : ",credit"
149 : ",execution_date"
150 : ",wt.payto_uri AS sender_account_details"
151 : ",reserve_in_serial_id"
152 : " FROM reserves_in"
153 : " JOIN reserves "
154 : " USING (reserve_pub)"
155 : " JOIN wire_targets wt"
156 : " ON (wire_source_h_payto = wire_target_h_payto)"
157 : " WHERE reserve_in_serial_id>=$1"
158 : " AND exchange_account_section=$2"
159 : " ORDER BY reserve_in_serial_id ASC;");
160 68 : qs = GNUNET_PQ_eval_prepared_multi_select (
161 : pg->conn,
162 : "select_reserves_in_above_serial_id_by_account",
163 : params,
164 : &reserves_in_serial_helper_cb,
165 : &risc);
166 68 : if (GNUNET_OK != risc.status)
167 0 : return GNUNET_DB_STATUS_HARD_ERROR;
168 68 : return qs;
169 : }
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