1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
This file is part of TALER
Copyright (C) 2022, 2024 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file exchangedb/pg_find_aggregation_transient.c
* @brief Implementation of the find_aggregation_transient function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_find_aggregation_transient.h"
#include "pg_helper.h"
/**
* Closure for #get_refunds_cb().
*/
struct FindAggregationTransientContext
{
/**
* Function to call on each result.
*/
TALER_EXCHANGEDB_TransientAggregationCallback cb;
/**
* Closure for @a cb.
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
/**
* Set to #GNUNET_SYSERR on error.
*/
enum GNUNET_GenericReturnValue status;
};
/**
* Function to be called with the results of a SELECT statement
* that has returned @a num_results results.
*
* @param cls closure of type `struct SelectRefundContext *`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
get_transients_cb (void *cls,
PGresult *result,
unsigned int num_results)
{
struct FindAggregationTransientContext *srctx = cls;
struct PostgresClosure *pg = srctx->pg;
for (unsigned int i = 0; i<num_results; i++)
{
struct TALER_Amount amount;
struct TALER_FullPayto payto_uri;
struct TALER_WireTransferIdentifierRawP wtid;
struct TALER_MerchantPublicKeyP merchant_pub;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
&merchant_pub),
GNUNET_PQ_result_spec_auto_from_type ("wtid_raw",
&wtid),
GNUNET_PQ_result_spec_string ("payto_uri",
&payto_uri.full_payto),
TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
&amount),
GNUNET_PQ_result_spec_end
};
bool cont;
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
srctx->status = GNUNET_SYSERR;
return;
}
cont = srctx->cb (srctx->cb_cls,
payto_uri,
&wtid,
&merchant_pub,
&amount);
GNUNET_free (payto_uri.full_payto);
if (! cont)
break;
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_find_aggregation_transient (
void *cls,
const struct TALER_NormalizedPaytoHashP *h_payto,
TALER_EXCHANGEDB_TransientAggregationCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (h_payto),
GNUNET_PQ_query_param_end
};
struct FindAggregationTransientContext srctx = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg,
.status = GNUNET_OK
};
PREPARE (pg,
"find_transient_aggregations",
"SELECT"
" atr.amount"
" ,atr.wtid_raw"
" ,atr.merchant_pub"
" ,wt.payto_uri"
" FROM wire_targets wt"
" JOIN aggregation_transient atr"
" USING (wire_target_h_payto)"
" WHERE wt.h_normalized_payto=$1;");
qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
"find_transient_aggregations",
params,
&get_transients_cb,
&srctx);
if (GNUNET_SYSERR == srctx.status)
return GNUNET_DB_STATUS_HARD_ERROR;
return qs;
}
|
