diff options
Diffstat (limited to 'src/backenddb/merchant-0004.sql')
| -rw-r--r-- | src/backenddb/merchant-0004.sql | 382 |
1 files changed, 0 insertions, 382 deletions
diff --git a/src/backenddb/merchant-0004.sql b/src/backenddb/merchant-0004.sql index eebe2889..204f14ca 100644 --- a/src/backenddb/merchant-0004.sql +++ b/src/backenddb/merchant-0004.sql @@ -50,385 +50,3 @@ COMMENT ON COLUMN merchant_template.image COMMENT ON COLUMN merchant_template.template_contract IS 'The template contract will contains some additional information.' - --- C CODE - -/** - * Delete information about a template. - * - * @param cls closure - * @param instance_id instance to delete product of - * @param template_id template to delete - * @return DB status code, #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS - * if template unknow. - */ -static enum GNUNET_DB_QueryStatus -postgres_delete_template (void *cls, - const char *instance_id, - const char *template_id) -{ - struct PostgresClosure *pg = cls; - struct GNUNET_PQ_QueryParam params[] = { - GNUNET_PQ_query_param_string (instance_id), - GNUNET_PQ_query_param_string (template_id), - GNUNET_PQ_query_param_end - }; - - check_connection (pg); - return GNUNET_PQ_eval_prepared_non_select (pg->conn, - "delete_template", - params); -} - -/** - * Insert details about a particular template. - * - * @param cls closure - * @param instance_id instance to insert template for - * @param template_id template identifier of template to insert - * @param pd the template details to insert - * @return database result code - */ -static enum GNUNET_DB_QueryStatus -postgres_insert_template (void *cls, - const char *instance_id, - const char *template_id, - const struct TALER_MERCHANTDB_TemplateDetails *pd) -{ - struct PostgresClosure *pg = cls; - struct GNUNET_PQ_QueryParam params[] = { - GNUNET_PQ_query_param_string (instance_id), - GNUNET_PQ_query_param_string (template_id), - GNUNET_PQ_query_param_string (pd->template_description), - GNUNET_PQ_query_param_string (pd->image), - GNUNET_PQ_query_param_string (pd->template_contract), - GNUNET_PQ_query_param_end - - }; - - check_connection (pg); - return GNUNET_PQ_eval_prepared_non_select (pg->conn, - "insert_template", - params); -} - -/** - * Update details about a particular template. - * - * @param cls closure - * @param instance_id instance to update template for - * @param template_id template to update - * @param pd update to the template details on success, can be NULL - * (in that case we only want to check if the template exists) - * @return database result code, #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS if the template - * does not yet exist. - */ -static enum GNUNET_DB_QueryStatus -postgres_update_template (void *cls, - const char *instance_id, - const char *template_id, - const struct TALER_MERCHANTDB_TemplateDetails *pd) -{ - struct PostgresClosure *pg = cls; - struct GNUNET_PQ_QueryParam params[] = { - GNUNET_PQ_query_param_string (instance_id), - GNUNET_PQ_query_param_string (template_id), - GNUNET_PQ_query_param_string (pd->template_description), - GNUNET_PQ_query_param_string (pd->image), - GNUNET_PQ_query_param_string (pd->template_contract), - GNUNET_PQ_query_param_end - }; - - { - GNUNET_break (0); - return GNUNET_DB_STATUS_HARD_ERROR; - } - check_connection (pg); - return GNUNET_PQ_eval_prepared_non_select (pg->conn, - "update_template", - params); -} - - - - -/** - * Context used for postgres_lookup_template(). - */ -struct LookupTemplateContext -{ - /** - * Function to call with the results. - */ - TALER_MERCHANTDB_TemplateCallback 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 template. - * - * @param[in,out] cls of type `struct LookupTemplateContext *` - * @param result the postgres result - * @param num_results the number of results in @a result - */ -static void -lookup_templates_cb (void *cls, - PGresult *result, - unsigned int num_results) -{ - struct LookupTemplateContext *tlc = cls; - - for (unsigned int i = 0; i < num_results; i++) - { - char *template_id; - struct GNUNET_PQ_ResultSpec rs[] = { - GNUNET_PQ_result_spec_string ("template_id", - &template_id), - GNUNET_PQ_result_spec_string ("template_description", - &template_description), - GNUNET_PQ_result_spec_end - }; - - if (GNUNET_OK != - GNUNET_PQ_extract_result (result, - rs, - i)) - { - GNUNET_break (0); - tlc->extract_failed = true; - return; - } - tlc->cb (tlc->cb_cls, - template_id); - GNUNET_PQ_cleanup_result (rs); - } -} - - -/** - * Lookup all of the templates the given instance has configured. - * - * @param cls closure - * @param instance_id instance to lookup template for - * @param cb function to call on all template found - * @param cb_cls closure for @a cb - * @return database result code - */ -static enum GNUNET_DB_QueryStatus -postgres_lookup_templates (void *cls, - const char *instance_id, - TALER_MERCHANTDB_TemplateCallback cb, - void *cb_cls) -{ - struct PostgresClosure *pg = cls; - struct LookupTemplateContext tlc = { - .cb = cb, - .cb_cls = cb_cls, - /* Can be overwritten by the lookup_template_cb */ - .extract_failed = false, - }; - struct GNUNET_PQ_QueryParam params[] = { - GNUNET_PQ_query_param_string (instance_id), - GNUNET_PQ_query_param_end - }; - enum GNUNET_DB_QueryStatus qs; - - check_connection (pg); - qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, - "lookup_templates", - params, - &lookup_templates_cb, - &tlc); - /* If there was an error inside lookup_template_cb, return a hard error. */ - if (tlc.extract_failed) - return GNUNET_DB_STATUS_HARD_ERROR; - return qs; -} - -/** - * Lookup details about a particular template. - * - * @param cls closure - * @param instance_id instance to lookup template for - * @param template_id template to lookup - * @param[out] pd set to the template details on success, can be NULL - * (in that case we only want to check if the template exists) - * @return database result code - */ -static enum GNUNET_DB_QueryStatus -postgres_lookup_template (void *cls, - const char *instance_id, - const char *template_id, - struct TALER_MERCHANTDB_TemplateDetails *pd) -{ - struct PostgresClosure *pg = cls; - struct GNUNET_PQ_QueryParam params[] = { - GNUNET_PQ_query_param_string (instance_id), - GNUNET_PQ_query_param_string (template_id), - GNUNET_PQ_query_param_end - }; - - if (NULL == pd) - { - struct GNUNET_PQ_ResultSpec rs_null[] = { - GNUNET_PQ_result_spec_end - }; - - check_connection (pg); - return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, - "lookup_template", - params, - rs_null); - } - else - { - struct GNUNET_PQ_ResultSpec rs[] = { - GNUNET_PQ_result_spec_string ("template_description", - &pd->template_description), - GNUNET_PQ_result_spec_string ("image", - &pd->image), - GNUNET_PQ_result_spec_string ("template_contract", - &pd->template_contract), - GNUNET_PQ_result_spec_end - }; - - check_connection (pg); - return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, - "lookup_template", - params, - rs); - } -} - - - -------------------------------API-------------------------------- - -/** - * Typically called by `lookup_templates`. - * - * @param cls a `json_t *` JSON array to build - * @param template_id ID of the template - */ -typedef void -(*TALER_MERCHANTDB_TemplatesCallback)(void *cls, - const char *template_id, - const char *template_description); - - -/** - * Details about a template. - */ -struct TALER_MERCHANTDB_TemplateDetails -{ - /** - * Description of the template. - */ - const char *template_description; - - /** - * Base64-encoded product image, or NULL. - */ - const char *image; - - /** - * In this template contract, we can have additional information. - */ - const json_t *template_contract; -}; - - - -/** - * Lookup all of the templates the given instance has configured. - * - * @param cls closure - * @param instance_id instance to lookup template for - * @param cb function to call on all template found - * @param cb_cls closure for @a cb - * @return database result code - */ -enum GNUNET_DB_QueryStatus -(*lookup_templates) (void *cls, - const char *instance_id, - TALER_MERCHANTDB_TemplateCallback cb, - void *cb_cls); - - -/** - * Lookup details about a particular template. - * - * @param cls closure - * @param instance_id instance to lookup template for - * @param template_id template to lookup - * @param[out] pd set to the template details on success, can be NULL - * (in that case we only want to check if the template exists) - * @return database result code - */ -enum GNUNET_DB_QueryStatus -(*lookup_template) (void *cls, - const char *instance_id, - const char *template_id, - struct TALER_MERCHANTDB_TemplateDetails *pd); - -/** - * Delete information about a template. - * - * @param cls closure - * @param instance_id instance to delete product of - * @param template_id template to delete - * @return DB status code, #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS - * if template unknow. - */ -enum GNUNET_DB_QueryStatus -(*delete_template) (void *cls, - const char *instance_id, - const char *template_id); - - - -/** - * Insert details about a particular template. - * - * @param cls closure - * @param instance_id instance to insert template for - * @param template_id template identifier of template to insert - * @param pd the template details to insert - * @return database result code - */ -enum GNUNET_DB_QueryStatus -(*insert_template) (void *cls, - const char *instance_id, - const char *template_id, - const struct TALER_MERCHANTDB_TemplateDetails *pd); - - - -/** - * Update details about a particular template. - * - * @param cls closure - * @param instance_id instance to update template for - * @param template_id template to update - * @param pd update to the template details on success, can be NULL - * (in that case we only want to check if the template exists) - * @return database result code, #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS if the template - * does not yet exist. - */ - -enum GNUNET_DB_QueryStatus -(*update_template) (void *cls, - const char *instance_id, - const char *template_id, - const struct TALER_MERCHANTDB_TemplateDetails *pd) |