diff options
Diffstat (limited to 'src/backenddb/pg_lookup_webhook_by_event.c')
| -rw-r--r-- | src/backenddb/pg_lookup_webhook_by_event.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/backenddb/pg_lookup_webhook_by_event.c b/src/backenddb/pg_lookup_webhook_by_event.c new file mode 100644 index 00000000..97960bbe --- /dev/null +++ b/src/backenddb/pg_lookup_webhook_by_event.c @@ -0,0 +1,158 @@ +/* + This file is part of TALER + Copyright (C) 2023 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 backenddb/pg_lookup_webhook_by_event.c + * @brief Implementation of the lookup_webhook_by_event function for Postgres + * @author Iván Ávalos + */ +#include "platform.h" +#include <taler/taler_error_codes.h> +#include <taler/taler_dbevents.h> +#include <taler/taler_pq_lib.h> +#include "pg_lookup_webhook_by_event.h" +#include "pg_helper.h" + +/** + * Context used for lookup_webhook_by_event_cb(). + */ +struct LookupWebhookDetailContext +{ + /** + * Function to call with the results. + */ + TALER_MERCHANTDB_WebhookDetailCallback cb; + + /** + * Closure for @a cb. + */ + void *cb_cls; + + /** + * Did database result extraction fail? + */ + bool extract_failed; +}; + +/** + * Function to be called with the results of a SELECT statement + * that has returned @a num_results results about webhook. + * + * @param[in,out] cls of type `struct LookupPendingWebhookContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +lookup_webhook_by_event_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct LookupWebhookDetailContext *wlc = cls; + + for (unsigned int i = 0; i < num_results; i++) + { + uint64_t webhook_serial; + char *event_type; + char *url; + char *http_method; + char *header_template; + char *body_template; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_uint64 ("webhook_serial", + &webhook_serial), + GNUNET_PQ_result_spec_string ("event_type", + &event_type), + GNUNET_PQ_result_spec_string ("url", + &url), + GNUNET_PQ_result_spec_string ("http_method", + &http_method), + GNUNET_PQ_result_spec_allow_null ( + GNUNET_PQ_result_spec_string ("header_template", + &header_template), + NULL), + GNUNET_PQ_result_spec_allow_null ( + GNUNET_PQ_result_spec_string ("body_template", + &body_template), + NULL), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + wlc->extract_failed = true; + return; + } + wlc->cb (wlc->cb_cls, + webhook_serial, + event_type, + url, + http_method, + header_template, + body_template); + GNUNET_PQ_cleanup_result (rs); + } +} + +enum GNUNET_DB_QueryStatus +TMH_PG_lookup_webhook_by_event (void *cls, + const char *instance_id, + const char *event_type, + TALER_MERCHANTDB_WebhookDetailCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct LookupWebhookDetailContext wlc = { + .cb = cb, + .cb_cls = cb_cls, + .extract_failed = false, + }; + + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_string (instance_id), + GNUNET_PQ_query_param_string (event_type), + GNUNET_PQ_query_param_end + }; + enum GNUNET_DB_QueryStatus qs; + + check_connection (pg); + PREPARE (pg, + "lookup_webhook_by_event", + "SELECT" + " webhook_serial" + ",event_type" + ",url" + ",http_method" + ",header_template" + ",body_template" + " FROM merchant_webhook" + " JOIN merchant_instances" + " USING (merchant_serial)" + " WHERE merchant_instances.merchant_id=$1" + " AND event_type=$2"); + + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "lookup_webhook_by_event", + params, + &lookup_webhook_by_event_cb, + &wlc); + + if (wlc.extract_failed) + return GNUNET_DB_STATUS_HARD_ERROR; + return qs; +} |