lookup_all_webhooks.c (5328B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2023 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 src/backenddb/lookup_all_webhooks.c 18 * @brief Implementation of the lookup_all_webhooks function for Postgres 19 * @author Iván Ávalos 20 */ 21 #include "platform.h" 22 #include <taler/taler_pq_lib.h> 23 #include "merchant-database/lookup_all_webhooks.h" 24 #include "helper.h" 25 26 /** 27 * Context used for lookup_all_webhooks_cb(). 28 */ 29 struct LookupAllWebhookContext 30 { 31 /** 32 * Function to call with the results. 33 */ 34 TALER_MERCHANTDB_AllWebhooksCallback cb; 35 36 /** 37 * Closure for @a cb. 38 */ 39 void *cb_cls; 40 41 /** 42 * Did database result extraction fail? 43 */ 44 bool extract_failed; 45 }; 46 47 48 /** 49 * Function to be called with the results of a SELECT statement 50 * that has returned @a num_results results about webhook. 51 * 52 * @param[in,out] cls of type `struct LookupAllWebhookContext *` 53 * @param result the postgres result 54 * @param num_results the number of results in @a result 55 */ 56 static void 57 lookup_all_webhooks_cb (void *cls, 58 PGresult *result, 59 unsigned int num_results) 60 { 61 struct LookupAllWebhookContext *pwlc = cls; 62 63 for (unsigned int i = 0; i < num_results; i++) 64 { 65 uint64_t webhook_pending_serial; 66 struct GNUNET_TIME_Absolute next_attempt; 67 uint32_t retries; 68 char *url; 69 char *http_method; 70 char *header = NULL; 71 char *body = NULL; 72 struct GNUNET_PQ_ResultSpec rs[] = { 73 GNUNET_PQ_result_spec_uint64 ("out_webhook_pending_serial", 74 &webhook_pending_serial), 75 GNUNET_PQ_result_spec_absolute_time ("out_next_attempt", 76 &next_attempt), 77 GNUNET_PQ_result_spec_uint32 ("out_retries", 78 &retries), 79 GNUNET_PQ_result_spec_string ("out_url", 80 &url), 81 GNUNET_PQ_result_spec_string ("out_http_method", 82 &http_method), 83 GNUNET_PQ_result_spec_allow_null ( 84 GNUNET_PQ_result_spec_string ("out_header", 85 &header), 86 NULL), 87 GNUNET_PQ_result_spec_allow_null ( 88 GNUNET_PQ_result_spec_string ("out_body", 89 &body), 90 NULL), 91 GNUNET_PQ_result_spec_end 92 }; 93 94 if (GNUNET_OK != 95 GNUNET_PQ_extract_result (result, 96 rs, 97 i)) 98 { 99 GNUNET_break (0); 100 pwlc->extract_failed = true; 101 return; 102 } 103 pwlc->cb (pwlc->cb_cls, 104 webhook_pending_serial, 105 next_attempt, 106 retries, 107 url, 108 http_method, 109 header, 110 body); 111 GNUNET_PQ_cleanup_result (rs); 112 } 113 } 114 115 116 enum GNUNET_DB_QueryStatus 117 TALER_MERCHANTDB_lookup_all_webhooks ( 118 struct TALER_MERCHANTDB_PostgresContext *pg, 119 const char *instance_id, 120 uint64_t min_row, 121 uint32_t max_results, 122 TALER_MERCHANTDB_AllWebhooksCallback cb, 123 void *cb_cls) 124 { 125 struct LookupAllWebhookContext pwlc = { 126 .cb = cb, 127 .cb_cls = cb_cls, 128 .extract_failed = false, 129 }; 130 uint64_t max_results64 = max_results; 131 struct GNUNET_PQ_QueryParam params[] = { 132 GNUNET_PQ_query_param_uint64 (&pg->current_merchant_serial), 133 GNUNET_PQ_query_param_uint64 (&min_row), 134 GNUNET_PQ_query_param_uint64 (&max_results64), 135 GNUNET_PQ_query_param_end 136 }; 137 enum GNUNET_DB_QueryStatus qs; 138 139 GNUNET_assert (NULL != pg->current_merchant_id); 140 GNUNET_assert (0 == strcmp (instance_id, 141 pg->current_merchant_id)); 142 check_connection (pg); 143 PREPARE (pg, 144 "lookup_all_webhooks", 145 " SELECT" 146 " webhook_pending_serial AS out_webhook_pending_serial" 147 " ,next_attempt AS out_next_attempt" 148 " ,retries AS out_retries" 149 " ,url AS out_url" 150 " ,http_method AS out_http_method" 151 " ,header AS out_header" 152 " ,body AS out_body" 153 " FROM merchant.merchant_pending_webhooks" 154 " WHERE merchant_serial = $1" 155 " AND webhook_pending_serial > $2" 156 " ORDER BY webhook_pending_serial ASC" 157 " LIMIT $3"); 158 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 159 "lookup_all_webhooks", 160 params, 161 &lookup_all_webhooks_cb, 162 &pwlc); 163 if (pwlc.extract_failed) 164 return GNUNET_DB_STATUS_HARD_ERROR; 165 return qs; 166 }