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