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/*
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-templates-ID.c
* @brief implementing PATCH /templates/$ID request handling
* @author Priscilla HUANG
*/
#include "platform.h"
#include "taler-merchant-httpd_private-patch-templates-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 template_id ID of the product to patch
* @param tp template details we failed to set
*/
static MHD_RESULT
determine_cause (struct MHD_Connection *connection,
const char *instance_id,
const char *template_id,
const struct TALER_MERCHANTDB_TemplateDetails *tp)
{
struct TALER_MERCHANTDB_TemplateDetails tpx;
enum GNUNET_DB_QueryStatus qs;
qs = TMH_db->lookup_template (TMH_db->cls,
instance_id,
template_id,
&tpx);
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_TEMPLATE_UNKNOWN,
template_id);
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
break; /* do below */
}
{
enum TALER_ErrorCode ec;
ec = TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
TALER_MERCHANTDB_template_details_free (&tpx);
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_templates_ID (const struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
struct TMH_HandlerContext *hc)
{
struct TMH_MerchantInstance *mi = hc->instance;
const char *template_id = hc->infix;
struct TALER_MERCHANTDB_TemplateDetails tp = {0};
enum GNUNET_DB_QueryStatus qs;
uint32_t pos_algorithm;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_string ("template_description",
(const char **) &tp.template_description),
GNUNET_JSON_spec_mark_optional (
GNUNET_JSON_spec_uint32 ("pos_algorithm",
&pos_algorithm),
0),
GNUNET_JSON_spec_mark_optional (
GNUNET_JSON_spec_string ("pos_key",
(const char **) &tp.pos_key),
NULL),
GNUNET_JSON_spec_json ("template_contract",
&tp.template_contract),
GNUNET_JSON_spec_end ()
};
GNUNET_assert (NULL != mi);
GNUNET_assert (NULL != template_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;
}
tp.pos_algorithm = (enum TALER_MerchantConfirmationAlgorithm) pos_algorithm;
if (! TMH_template_contract_valid (tp.template_contract))
{
GNUNET_break_op (0);
GNUNET_JSON_parse_free (spec);
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_BAD_REQUEST,
TALER_EC_GENERIC_PARAMETER_MALFORMED,
"template_contract");
}
qs = TMH_db->update_template (TMH_db->cls,
mi->settings.id,
template_id,
&tp);
{
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,
template_id,
&tp);
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-templates-ID.c */
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