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Diffstat (limited to 'll-database-binding/src/utils.h')
| -rw-r--r-- | ll-database-binding/src/utils.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/ll-database-binding/src/utils.h b/ll-database-binding/src/utils.h new file mode 100644 index 0000000..093d591 --- /dev/null +++ b/ll-database-binding/src/utils.h @@ -0,0 +1,72 @@ +/* +* Copyright 2017 IoT.bzh +* +* author: Loïc Collignon <loic.collignon@iot.bzh> +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +#ifndef _BINDING_UTILS_H_ +#define _BINDING_UTILS_H_ + +#include <string.h> +#include <json-c/json.h> + +#ifndef AFB_BINDING_VERSION +#define AFB_BINDING_VERSION 2 +#endif +#include <afb/afb-binding.h> + +#define REGISTER_VERB(n, a, i, s) { .verb = #n, .callback = verb_##n, .auth = a, .info = i, .session = s } + +/** + * @brief Get a string from a json object. + * @param[in] obj Json object from wich the string is queried. + * @param[in] name Name of the string to get. + * @return The string value. + */ +static inline const char* get_json_string(struct json_object* obj, const char* name) +{ + struct json_object* item = NULL; + if (!obj || !name || !strlen(name)) return NULL; + if (!json_object_object_get_ex(obj, name, &item) || !item) return NULL; + return json_object_get_string(item); +} + +/** + * @brief Add a string key/value to a json object. + * @param[in] obj The json object to which the key/value is added. + * @param[in] key The key to add. + * @param[in] value The value to add. + */ +static inline void json_object_add_string(struct json_object* obj, const char* key, const char* value) +{ + json_object_object_add(obj, key, json_object_new_string(value)); +} + +/** + * @brief Send an @c event with the specified @c message then fail with the same @c message. + * @param[in] req The query to fail. + * @param[in] event The event to push. + * @param[in] message The message to push with the event and use as a fail message. + */ +static inline void afb_fail_ex(struct afb_req req, struct afb_event event, const char* message) +{ + struct json_object* result = json_object_new_object(); + json_object_add_string(result, "message", message); + afb_event_push(event, result); + + afb_req_fail(req, message, NULL); +} + +#endif // _BINDING_UTILS_H_ |