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_purse_decisions_above_serial_id.c
18 : * @brief Implementation of the select_purse_decisions_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_purse_decisions_above_serial_id.h"
26 : #include "pg_helper.h"
27 :
28 : /**
29 : * Closure for #purse_decision_serial_helper_cb().
30 : */
31 : struct PurseDecisionSerialContext
32 : {
33 :
34 : /**
35 : * Callback to call.
36 : */
37 : TALER_EXCHANGEDB_PurseDecisionCallback 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 PurseRefundSerialContext`
61 : * @param result the postgres result
62 : * @param num_results the number of results in @a result
63 : */
64 : static void
65 8 : purse_decision_serial_helper_cb (void *cls,
66 : PGresult *result,
67 : unsigned int num_results)
68 : {
69 8 : struct PurseDecisionSerialContext *dsc = cls;
70 8 : struct PostgresClosure *pg = dsc->pg;
71 :
72 8 : for (unsigned int i = 0; i<num_results; i++)
73 : {
74 : struct TALER_PurseContractPublicKeyP purse_pub;
75 : struct TALER_ReservePublicKeyP reserve_pub;
76 0 : bool no_reserve = true;
77 : uint64_t rowid;
78 : struct TALER_Amount val;
79 0 : struct GNUNET_PQ_ResultSpec rs[] = {
80 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
81 : &purse_pub),
82 0 : GNUNET_PQ_result_spec_allow_null (
83 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
84 : &reserve_pub),
85 : &no_reserve),
86 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
87 : &val),
88 0 : GNUNET_PQ_result_spec_uint64 ("purse_decision_serial_id",
89 : &rowid),
90 : GNUNET_PQ_result_spec_end
91 : };
92 : enum GNUNET_GenericReturnValue ret;
93 :
94 0 : if (GNUNET_OK !=
95 0 : GNUNET_PQ_extract_result (result,
96 : rs,
97 : i))
98 : {
99 0 : GNUNET_break (0);
100 0 : dsc->status = GNUNET_SYSERR;
101 0 : return;
102 : }
103 0 : ret = dsc->cb (dsc->cb_cls,
104 : rowid,
105 : &purse_pub,
106 : no_reserve ? NULL : &reserve_pub,
107 : &val);
108 0 : GNUNET_PQ_cleanup_result (rs);
109 0 : if (GNUNET_OK != ret)
110 0 : break;
111 : }
112 : }
113 :
114 :
115 : enum GNUNET_DB_QueryStatus
116 8 : TEH_PG_select_purse_decisions_above_serial_id (
117 : void *cls,
118 : uint64_t serial_id,
119 : bool refunded,
120 : TALER_EXCHANGEDB_PurseDecisionCallback cb,
121 : void *cb_cls)
122 : {
123 8 : struct PostgresClosure *pg = cls;
124 8 : struct GNUNET_PQ_QueryParam params[] = {
125 8 : GNUNET_PQ_query_param_uint64 (&serial_id),
126 8 : GNUNET_PQ_query_param_bool (refunded),
127 : GNUNET_PQ_query_param_end
128 : };
129 8 : struct PurseDecisionSerialContext dsc = {
130 : .cb = cb,
131 : .cb_cls = cb_cls,
132 : .pg = pg,
133 : .status = GNUNET_OK
134 : };
135 : enum GNUNET_DB_QueryStatus qs;
136 :
137 8 : PREPARE (pg,
138 : "audit_get_purse_decisions_incr",
139 : "SELECT"
140 : " pd.purse_pub"
141 : ",pm.reserve_pub"
142 : ",pd.purse_decision_serial_id"
143 : ",pr.amount_with_fee"
144 : " FROM purse_decision pd"
145 : " JOIN purse_requests pr ON (pd.purse_pub = pr.purse_pub)"
146 : " LEFT JOIN purse_merges pm ON (pm.purse_pub = pd.purse_pub)"
147 : " WHERE ("
148 : " (purse_decision_serial_id>=$1) AND "
149 : " (refunded=$2)"
150 : " )"
151 : " ORDER BY purse_decision_serial_id ASC;");
152 :
153 :
154 8 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
155 : "audit_get_purse_decisions_incr",
156 : params,
157 : &purse_decision_serial_helper_cb,
158 : &dsc);
159 8 : if (GNUNET_OK != dsc.status)
160 0 : return GNUNET_DB_STATUS_HARD_ERROR;
161 8 : return qs;
162 : }
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