Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022 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 pg_select_reserve_closed_above_serial_id.c
18 : * @brief Low-level (statement-level) Postgres database access for the exchange
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_reserve_closed_above_serial_id.h"
26 : #include "plugin_exchangedb_common.h"
27 : #include "pg_helper.h"
28 :
29 : /**
30 : * Closure for #reserve_closed_serial_helper_cb().
31 : */
32 : struct ReserveClosedSerialContext
33 : {
34 :
35 : /**
36 : * Callback to call.
37 : */
38 : TALER_EXCHANGEDB_ReserveClosedCallback cb;
39 :
40 : /**
41 : * Closure for @e cb.
42 : */
43 : void *cb_cls;
44 :
45 : /**
46 : * Plugin's 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 ReserveClosedSerialContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 4 : reserve_closed_serial_helper_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 4 : struct ReserveClosedSerialContext *rcsc = cls;
71 4 : struct PostgresClosure *pg = rcsc->pg;
72 :
73 4 : for (unsigned int i = 0; i<num_results; i++)
74 : {
75 : uint64_t rowid;
76 : struct TALER_ReservePublicKeyP reserve_pub;
77 : struct TALER_FullPayto receiver_account;
78 : struct TALER_WireTransferIdentifierRawP wtid;
79 : struct TALER_Amount amount_with_fee;
80 : struct TALER_Amount closing_fee;
81 : struct GNUNET_TIME_Timestamp execution_date;
82 : uint64_t close_request_row;
83 0 : struct GNUNET_PQ_ResultSpec rs[] = {
84 0 : GNUNET_PQ_result_spec_uint64 ("close_uuid",
85 : &rowid),
86 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
87 : &reserve_pub),
88 0 : GNUNET_PQ_result_spec_timestamp ("execution_date",
89 : &execution_date),
90 0 : GNUNET_PQ_result_spec_auto_from_type ("wtid",
91 : &wtid),
92 0 : GNUNET_PQ_result_spec_string ("receiver_account",
93 : &receiver_account.full_payto),
94 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
95 : &amount_with_fee),
96 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("closing_fee",
97 : &closing_fee),
98 0 : GNUNET_PQ_result_spec_uint64 ("close_request_row",
99 : &close_request_row),
100 : GNUNET_PQ_result_spec_end
101 : };
102 : enum GNUNET_GenericReturnValue ret;
103 :
104 0 : if (GNUNET_OK !=
105 0 : GNUNET_PQ_extract_result (result,
106 : rs,
107 : i))
108 : {
109 0 : GNUNET_break (0);
110 0 : rcsc->status = GNUNET_SYSERR;
111 0 : return;
112 : }
113 0 : ret = rcsc->cb (rcsc->cb_cls,
114 : rowid,
115 : execution_date,
116 : &amount_with_fee,
117 : &closing_fee,
118 : &reserve_pub,
119 : receiver_account,
120 : &wtid,
121 : close_request_row);
122 0 : GNUNET_PQ_cleanup_result (rs);
123 0 : if (GNUNET_OK != ret)
124 0 : break;
125 : }
126 : }
127 :
128 :
129 : enum GNUNET_DB_QueryStatus
130 4 : TEH_PG_select_reserve_closed_above_serial_id (
131 : void *cls,
132 : uint64_t serial_id,
133 : TALER_EXCHANGEDB_ReserveClosedCallback cb,
134 : void *cb_cls)
135 : {
136 4 : struct PostgresClosure *pg = cls;
137 4 : struct GNUNET_PQ_QueryParam params[] = {
138 4 : GNUNET_PQ_query_param_uint64 (&serial_id),
139 : GNUNET_PQ_query_param_end
140 : };
141 4 : struct ReserveClosedSerialContext rcsc = {
142 : .cb = cb,
143 : .cb_cls = cb_cls,
144 : .pg = pg,
145 : .status = GNUNET_OK
146 : };
147 : enum GNUNET_DB_QueryStatus qs;
148 :
149 4 : PREPARE (
150 : pg,
151 : "reserves_close_get_incr",
152 : "SELECT"
153 : " close_uuid"
154 : ",reserves.reserve_pub"
155 : ",execution_date"
156 : ",wtid"
157 : ",wt.payto_uri AS receiver_account"
158 : ",amount"
159 : ",closing_fee"
160 : ",close_request_row"
161 : " FROM reserves_close"
162 : " JOIN wire_targets wt"
163 : " USING (wire_target_h_payto)"
164 : " JOIN reserves"
165 : " USING (reserve_pub)"
166 : " WHERE close_uuid>=$1"
167 : " ORDER BY close_uuid ASC;");
168 4 : qs = GNUNET_PQ_eval_prepared_multi_select (
169 : pg->conn,
170 : "reserves_close_get_incr",
171 : params,
172 : &reserve_closed_serial_helper_cb,
173 : &rcsc);
174 4 : if (GNUNET_OK != rcsc.status)
175 0 : return GNUNET_DB_STATUS_HARD_ERROR;
176 4 : return qs;
177 : }
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