diff options
Diffstat (limited to 'src/backend/taler-merchant-httpd_private-patch-webhooks-ID.c')
| -rw-r--r-- | src/backend/taler-merchant-httpd_private-patch-webhooks-ID.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/backend/taler-merchant-httpd_private-patch-webhooks-ID.c b/src/backend/taler-merchant-httpd_private-patch-webhooks-ID.c new file mode 100644 index 00000000..80d889fa --- /dev/null +++ b/src/backend/taler-merchant-httpd_private-patch-webhooks-ID.c @@ -0,0 +1,188 @@ +/* + This file is part of TALER + (C) 2022 Taler Systems SA + + TALER is free software; you can redistribute it and/or modify + it under the terms of the GNU Affero 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 taler-merchant-httpd_private-patch-webhooks-ID.c + * @brief implementing PATCH /webhooks/$ID request handling + * @author Priscilla HUANG + */ +#include "platform.h" +#include "taler-merchant-httpd_private-patch-webhooks-ID.h" +#include "taler-merchant-httpd_helper.h" +#include <taler/taler_json_lib.h> + + +/** + * How often do we retry the simple INSERT database transaction? + */ +#define MAX_RETRIES 3 + + +/** + * Determine the cause of the PATCH failure in more detail and report. + * + * @param connection connection to report on + * @param instance_id instance we are processing + * @param webhook_id ID of the webhook to patch + * @param wb webhook details we failed to set + */ +static MHD_RESULT +determine_cause (struct MHD_Connection *connection, + const char *instance_id, + const char *webhook_id, + const struct TALER_MERCHANTDB_WebhookDetails *wb) +{ + struct TALER_MERCHANTDB_WebhookDetails wpx; + enum GNUNET_DB_QueryStatus qs; + + qs = TMH_db->lookup_webhook (TMH_db->cls, + instance_id, + webhook_id, + &wpx); + switch (qs) + { + case GNUNET_DB_STATUS_HARD_ERROR: + GNUNET_break (0); + return TALER_MHD_reply_with_error (connection, + MHD_HTTP_INTERNAL_SERVER_ERROR, + TALER_EC_GENERIC_DB_FETCH_FAILED, + NULL); + case GNUNET_DB_STATUS_SOFT_ERROR: + GNUNET_break (0); + return TALER_MHD_reply_with_error (connection, + MHD_HTTP_INTERNAL_SERVER_ERROR, + TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE, + "unexpected serialization problem"); + case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS: + return TALER_MHD_reply_with_error (connection, + MHD_HTTP_NOT_FOUND, + TALER_EC_MERCHANT_GENERIC_WEBHOOK_UNKNOWN, + webhook_id); + case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT: + break; /* do below */ + } + + { + enum TALER_ErrorCode ec; + + ec = TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE; + TALER_MERCHANTDB_webhook_details_free (&wpx); + GNUNET_break (TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE != ec); + return TALER_MHD_reply_with_error (connection, + MHD_HTTP_CONFLICT, + ec, + NULL); + } +} + + +/** + * PATCH configuration of an existing instance, given its configuration. + * + * @param rh context of the handler + * @param connection the MHD connection to handle + * @param[in,out] hc context with further information about the request + * @return MHD result code + */ +MHD_RESULT +TMH_private_patch_webhooks_ID (const struct TMH_RequestHandler *rh, + struct MHD_Connection *connection, + struct TMH_HandlerContext *hc) +{ + struct TMH_MerchantInstance *mi = hc->instance; + const char *webhook_id = hc->infix; + struct TALER_MERCHANTDB_WebhookDetails wb = {0}; + enum GNUNET_DB_QueryStatus qs; + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_string ("event_type", + (const char **) &wb.event_type), + TALER_JSON_spec_web_url ("url", + (const char **) &wb.url), + GNUNET_JSON_spec_string ("http_method", + (const char **) &wb.http_method), + GNUNET_JSON_spec_mark_optional ( + GNUNET_JSON_spec_string ("header_template", + (const char **) &wb.header_template), + NULL), + GNUNET_JSON_spec_mark_optional ( + GNUNET_JSON_spec_string ("body_template", + (const char **) &wb.body_template), + NULL), + GNUNET_JSON_spec_end () + }; + + GNUNET_assert (NULL != mi); + GNUNET_assert (NULL != webhook_id); + { + enum GNUNET_GenericReturnValue res; + + res = TALER_MHD_parse_json_data (connection, + hc->request_body, + spec); + if (GNUNET_OK != res) + return (GNUNET_NO == res) + ? MHD_YES + : MHD_NO; + } + + + qs = TMH_db->update_webhook (TMH_db->cls, + mi->settings.id, + webhook_id, + &wb); + { + MHD_RESULT ret = MHD_NO; + + switch (qs) + { + case GNUNET_DB_STATUS_HARD_ERROR: + GNUNET_break (0); + ret = TALER_MHD_reply_with_error (connection, + MHD_HTTP_INTERNAL_SERVER_ERROR, + TALER_EC_GENERIC_DB_STORE_FAILED, + NULL); + break; + case GNUNET_DB_STATUS_SOFT_ERROR: + GNUNET_break (0); + ret = TALER_MHD_reply_with_error (connection, + MHD_HTTP_INTERNAL_SERVER_ERROR, + TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE, + "unexpected serialization problem"); + break; + case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS: + ret = determine_cause (connection, + mi->settings.id, + webhook_id, + &wb); + break; + case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT: + ret = TALER_MHD_reply_static (connection, + MHD_HTTP_NO_CONTENT, + NULL, + NULL, + 0); + break; + } + GNUNET_JSON_parse_free (spec); + return ret; + } +} + + +/* end of taler-merchant-httpd_private-patch-webhooks-ID.c */ |