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 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/taler_pq_lib.h"
22 : #include "exchange-database/select_reserve_closed_above_serial_id.h"
23 : #include "helper.h"
24 :
25 : /**
26 : * Closure for #reserve_closed_serial_helper_cb().
27 : */
28 : struct ReserveClosedSerialContext
29 : {
30 :
31 : /**
32 : * Callback to call.
33 : */
34 : TALER_EXCHANGEDB_ReserveClosedCallback cb;
35 :
36 : /**
37 : * Closure for @e cb.
38 : */
39 : void *cb_cls;
40 :
41 : /**
42 : * Plugin's context.
43 : */
44 : struct TALER_EXCHANGEDB_PostgresContext *pg;
45 :
46 : /**
47 : * Status code, set to #GNUNET_SYSERR on hard errors.
48 : */
49 : enum GNUNET_GenericReturnValue status;
50 : };
51 :
52 :
53 : /**
54 : * Helper function 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 ReserveClosedSerialContext`
58 : * @param result the postgres result
59 : * @param num_results the number of results in @a result
60 : */
61 : static void
62 4 : reserve_closed_serial_helper_cb (void *cls,
63 : PGresult *result,
64 : unsigned int num_results)
65 : {
66 4 : struct ReserveClosedSerialContext *rcsc = cls;
67 4 : struct TALER_EXCHANGEDB_PostgresContext *pg = rcsc->pg;
68 :
69 4 : for (unsigned int i = 0; i<num_results; i++)
70 : {
71 : uint64_t rowid;
72 : struct TALER_ReservePublicKeyP reserve_pub;
73 : struct TALER_FullPayto receiver_account;
74 : struct TALER_WireTransferIdentifierRawP wtid;
75 : struct TALER_Amount amount_with_fee;
76 : struct TALER_Amount closing_fee;
77 : struct GNUNET_TIME_Timestamp execution_date;
78 : uint64_t close_request_row;
79 0 : struct GNUNET_PQ_ResultSpec rs[] = {
80 0 : GNUNET_PQ_result_spec_uint64 ("close_uuid",
81 : &rowid),
82 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
83 : &reserve_pub),
84 0 : GNUNET_PQ_result_spec_timestamp ("execution_date",
85 : &execution_date),
86 0 : GNUNET_PQ_result_spec_auto_from_type ("wtid",
87 : &wtid),
88 0 : GNUNET_PQ_result_spec_string ("receiver_account",
89 : &receiver_account.full_payto),
90 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
91 : &amount_with_fee),
92 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("closing_fee",
93 : &closing_fee),
94 0 : GNUNET_PQ_result_spec_uint64 ("close_request_row",
95 : &close_request_row),
96 : GNUNET_PQ_result_spec_end
97 : };
98 : enum GNUNET_GenericReturnValue ret;
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 : rcsc->status = GNUNET_SYSERR;
107 0 : return;
108 : }
109 0 : ret = rcsc->cb (rcsc->cb_cls,
110 : rowid,
111 : execution_date,
112 : &amount_with_fee,
113 : &closing_fee,
114 : &reserve_pub,
115 : receiver_account,
116 : &wtid,
117 : close_request_row);
118 0 : GNUNET_PQ_cleanup_result (rs);
119 0 : if (GNUNET_OK != ret)
120 0 : break;
121 : }
122 : }
123 :
124 :
125 : enum GNUNET_DB_QueryStatus
126 4 : TALER_EXCHANGEDB_select_reserve_closed_above_serial_id (
127 : struct TALER_EXCHANGEDB_PostgresContext *pg,
128 : uint64_t serial_id,
129 : TALER_EXCHANGEDB_ReserveClosedCallback cb,
130 : void *cb_cls)
131 : {
132 4 : struct GNUNET_PQ_QueryParam params[] = {
133 4 : GNUNET_PQ_query_param_uint64 (&serial_id),
134 : GNUNET_PQ_query_param_end
135 : };
136 4 : struct ReserveClosedSerialContext rcsc = {
137 : .cb = cb,
138 : .cb_cls = cb_cls,
139 : .pg = pg,
140 : .status = GNUNET_OK
141 : };
142 : enum GNUNET_DB_QueryStatus qs;
143 :
144 4 : PREPARE (
145 : pg,
146 : "reserves_close_get_incr",
147 : "SELECT"
148 : " close_uuid"
149 : ",reserves.reserve_pub"
150 : ",execution_date"
151 : ",wtid"
152 : ",wt.payto_uri AS receiver_account"
153 : ",amount"
154 : ",closing_fee"
155 : ",close_request_row"
156 : " FROM reserves_close"
157 : " JOIN wire_targets wt"
158 : " USING (wire_target_h_payto)"
159 : " JOIN reserves"
160 : " USING (reserve_pub)"
161 : " WHERE close_uuid>=$1"
162 : " ORDER BY close_uuid ASC;");
163 4 : qs = GNUNET_PQ_eval_prepared_multi_select (
164 : pg->conn,
165 : "reserves_close_get_incr",
166 : params,
167 : &reserve_closed_serial_helper_cb,
168 : &rcsc);
169 4 : if (GNUNET_OK != rcsc.status)
170 0 : return GNUNET_DB_STATUS_HARD_ERROR;
171 4 : return qs;
172 : }
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