api-v3: First draft

This commit introduces the bindings v3 API for bindings.

The documentation has still to be improved and will come
very soon.

Change-Id: I8f9007370e29f671fdfd1da87fff7372a17db7af
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 0 insertions, 423 deletions

diff --git a/include/afb/afb-req.h b/include/afb/afb-req.h
deleted file mode 100644
index 77153ef1..00000000
--- a/include/afb/afb-req.h
+++ /dev/null
@@ -1,423 +0,0 @@
-/*
- * Copyright (C) 2016, 2017, 2018 "IoT.bzh"
- * Author: José Bollo <jose.bollo@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.
- */
-
-#pragma once
-
-#include "afb-req-itf.h"
-#include "afb-event.h"
-
-/*
- * Converts the 'req' to an afb_request.
- */
-static inline struct afb_request *afb_req_to_request(struct afb_req req)
-{
-	return req.closure;
-}
-
-/*
- * Checks whether the request 'req' is valid or not.
- *
- * Returns 0 if not valid or 1 if valid.
- */
-static inline int afb_req_is_valid(struct afb_req req)
-{
-	return !!req.itf;
-}
-
-/*
- * Gets from the request 'req' the argument of 'name'.
- * Returns a PLAIN structure of type 'struct afb_arg'.
- * When the argument of 'name' is not found, all fields of result are set to NULL.
- * When the argument of 'name' is found, the fields are filled,
- * in particular, the field 'result.name' is set to 'name'.
- *
- * There is a special name value: the empty string.
- * The argument of name "" is defined only if the request was made using
- * an HTTP POST of Content-Type "application/json". In that case, the
- * argument of name "" receives the value of the body of the HTTP request.
- */
-static inline struct afb_arg afb_req_get(struct afb_req req, const char *name)
-{
-	return req.itf->get(req.closure, name);
-}
-
-/*
- * Gets from the request 'req' the string value of the argument of 'name'.
- * Returns NULL if when there is no argument of 'name'.
- * Returns the value of the argument of 'name' otherwise.
- *
- * Shortcut for: afb_req_get(req, name).value
- */
-static inline const char *afb_req_value(struct afb_req req, const char *name)
-{
-	return afb_req_get(req, name).value;
-}
-
-/*
- * Gets from the request 'req' the path for file attached to the argument of 'name'.
- * Returns NULL if when there is no argument of 'name' or when there is no file.
- * Returns the path of the argument of 'name' otherwise.
- *
- * Shortcut for: afb_req_get(req, name).path
- */
-static inline const char *afb_req_path(struct afb_req req, const char *name)
-{
-	return afb_req_get(req, name).path;
-}
-
-/*
- * Gets from the request 'req' the json object hashing the arguments.
- * The returned object must not be released using 'json_object_put'.
- */
-static inline struct json_object *afb_req_json(struct afb_req req)
-{
-	return req.itf->json(req.closure);
-}
-
-/*
- * Sends a reply of kind success to the request 'req'.
- * The status of the reply is automatically set to "success".
- * Its send the object 'obj' (can be NULL) with an
- * informationnal comment 'info (can also be NULL).
- *
- * For convenience, the function calls 'json_object_put' for 'obj'.
- * Thus, in the case where 'obj' should remain available after
- * the function returns, the function 'json_object_get' shall be used.
- */
-static inline void afb_req_success(struct afb_req req, struct json_object *obj, const char *info)
-{
-	req.itf->success(req.closure, obj, info);
-}
-
-/*
- * Same as 'afb_req_success' but the 'info' is a formatting
- * string followed by arguments.
- *
- * For convenience, the function calls 'json_object_put' for 'obj'.
- * Thus, in the case where 'obj' should remain available after
- * the function returns, the function 'json_object_get' shall be used.
- */
-static inline void afb_req_success_f(struct afb_req req, struct json_object *obj, const char *info, ...) __attribute__((format(printf, 3, 4)));
-static inline void afb_req_success_f(struct afb_req req, struct json_object *obj, const char *info, ...)
-{
-	va_list args;
-	va_start(args, info);
-	req.itf->vsuccess(req.closure, obj, info, args);
-	va_end(args);
-}
-
-/*
- * Same as 'afb_req_success_f' but the arguments to the format 'info'
- * are given as a variable argument list instance.
- *
- * For convenience, the function calls 'json_object_put' for 'obj'.
- * Thus, in the case where 'obj' should remain available after
- * the function returns, the function 'json_object_get' shall be used.
- */
-static inline void afb_req_success_v(struct afb_req req, struct json_object *obj, const char *info, va_list args)
-{
-	req.itf->vsuccess(req.closure, obj, info, args);
-}
-
-/*
- * Sends a reply of kind failure to the request 'req'.
- * The status of the reply is set to 'status' and an
- * informationnal comment 'info' (can also be NULL) can be added.
- *
- * Note that calling afb_req_fail("success", info) is equivalent
- * to call afb_req_success(NULL, info). Thus even if possible it
- * is strongly recommanded to NEVER use "success" for status.
- */
-static inline void afb_req_fail(struct afb_req req, const char *status, const char *info)
-{
-	req.itf->fail(req.closure, status, info);
-}
-
-/*
- * Same as 'afb_req_fail' but the 'info' is a formatting
- * string followed by arguments.
- */
-static inline void afb_req_fail_f(struct afb_req req, const char *status, const char *info, ...) __attribute__((format(printf, 3, 4)));
-static inline void afb_req_fail_f(struct afb_req req, const char *status, const char *info, ...)
-{
-	va_list args;
-	va_start(args, info);
-	req.itf->vfail(req.closure, status, info, args);
-	va_end(args);
-}
-
-/*
- * Same as 'afb_req_fail_f' but the arguments to the format 'info'
- * are given as a variable argument list instance.
- */
-static inline void afb_req_fail_v(struct afb_req req, const char *status, const char *info, va_list args)
-{
-	req.itf->vfail(req.closure, status, info, args);
-}
-
-/*
- * Gets the pointer stored by the binding for the session of 'req'.
- * When the binding has not yet recorded a pointer, NULL is returned.
- */
-static inline void *afb_req_context_get(struct afb_req req)
-{
-	return req.itf->context_get(req.closure);
-}
-
-/*
- * Stores for the binding the pointer 'context' to the session of 'req'.
- * The function 'free_context' will be called when the session is closed
- * or if binding stores an other pointer.
- */
-static inline void afb_req_context_set(struct afb_req req, void *context, void (*free_context)(void*))
-{
-	req.itf->context_set(req.closure, context, free_context);
-}
-
-/*
- * Gets the pointer stored by the binding for the session of 'req'.
- * If the stored pointer is NULL, indicating that no pointer was
- * already stored, afb_req_context creates a new context by calling
- * the function 'create_context' and stores it with the freeing function
- * 'free_context'.
- */
-static inline void *afb_req_context(struct afb_req req, void *(*create_context)(), void (*free_context)(void*))
-{
-	return req.itf->context_make(req.closure, 0, (void *(*)(void*))(void*)create_context, free_context, 0);
-}
-
-/*
- * Gets the pointer stored by the binding for the session of 'request'.
- * If no previous pointer is stored or if 'replace' is not zero, a new value
- * is generated using the function 'create_context' called with the 'closure'.
- * If 'create_context' is NULL the generated value is 'closure'.
- * When a value is created, the function 'free_context' is recorded and will
- * be called (with the created value as argument) to free the created value when
- * it is not more used.
- * This function is atomic: it ensures that 2 threads will not race together.
- */
-static inline void *afb_req_context_make(struct afb_req req, int replace, void *(*create_context)(void *closure), void (*free_context)(void*), void *closure)
-{
-	return req.itf->context_make(req.closure, replace, create_context, free_context, closure);
-}
-
-/*
- * Frees the pointer stored by the binding for the session of 'req'
- * and sets it to NULL.
- *
- * Shortcut for: afb_req_context_set(req, NULL, NULL)
- */
-static inline void afb_req_context_clear(struct afb_req req)
-{
-	afb_req_context_set(req, 0, 0);
-}
-
-/*
- * Adds one to the count of references of 'req'.
- * This function MUST be called by asynchronous implementations
- * of verbs if no reply was sent before returning.
- */
-static inline void afb_req_addref(struct afb_req req)
-{
-	req.itf->addref(req.closure);
-}
-
-/*
- * Substracts one to the count of references of 'req'.
- * This function MUST be called by asynchronous implementations
- * of verbs after sending the asynchronous reply.
- */
-static inline void afb_req_unref(struct afb_req req)
-{
-	req.itf->unref(req.closure);
-}
-
-/*
- * Closes the session associated with 'req'
- * and delete all associated contexts.
- */
-static inline void afb_req_session_close(struct afb_req req)
-{
-	req.itf->session_close(req.closure);
-}
-
-/*
- * Sets the level of assurance of the session of 'req'
- * to 'level'. The effect of this function is subject of
- * security policies.
- * Returns 1 on success or 0 if failed.
- */
-static inline int afb_req_session_set_LOA(struct afb_req req, unsigned level)
-{
-	return req.itf->session_set_LOA(req.closure, level);
-}
-
-/*
- * Establishes for the client link identified by 'req' a subscription
- * to the 'event'.
- * Returns 0 in case of successful subscription or -1 in case of error.
- */
-static inline int afb_req_subscribe(struct afb_req req, struct afb_event event)
-{
-	return req.itf->subscribe(req.closure, event);
-}
-
-/*
- * Revokes the subscription established to the 'event' for the client
- * link identified by 'req'.
- * Returns 0 in case of successful subscription or -1 in case of error.
- */
-static inline int afb_req_unsubscribe(struct afb_req req, struct afb_event event)
-{
-	return req.itf->unsubscribe(req.closure, event);
-}
-
-/*
- * Makes a call to the method of name 'api' / 'verb' with the object 'args'.
- * This call is made in the context of the request 'req'.
- * On completion, the function 'callback' is invoked with the
- * 'closure' given at call and two other parameters: 'iserror' and 'result'.
- * 'status' is 0 on success or negative when on an error reply.
- * 'result' is the json object of the reply, you must not call json_object_put
- * on the result.
- *
- * For convenience, the function calls 'json_object_put' for 'args'.
- * Thus, in the case where 'args' should remain available after
- * the function returns, the function 'json_object_get' shall be used.
- *
- * See also:
- *  - 'afb_req_subcall_req' that is convenient to keep request alive automatically.
- *  - 'afb_req_subcall_sync' the synchronous version
- */
-static inline void afb_req_subcall(struct afb_req req, const char *api, const char *verb, struct json_object *args, void (*callback)(void *closure, int iserror, struct json_object *result), void *closure)
-{
-	req.itf->subcall(req.closure, api, verb, args, callback, closure);
-}
-
-/*
- * Makes a call to the method of name 'api' / 'verb' with the object 'args'.
- * This call is made in the context of the request 'req'.
- * On completion, the function 'callback' is invoked with the
- * original request 'req', the 'closure' given at call and two
- * other parameters: 'iserror' and 'result'.
- * 'status' is 0 on success or negative when on an error reply.
- * 'result' is the json object of the reply, you must not call json_object_put
- * on the result.
- *
- * For convenience, the function calls 'json_object_put' for 'args'.
- * Thus, in the case where 'args' should remain available after
- * the function returns, the function 'json_object_get' shall be used.
- *
- * See also:
- *  - 'afb_req_subcall' that doesn't keep request alive automatically.
- *  - 'afb_req_subcall_sync' the synchronous version
- */
-static inline void afb_req_subcall_req(struct afb_req req, const char *api, const char *verb, struct json_object *args, void (*callback)(void *closure, int iserror, struct json_object *result, struct afb_req req), void *closure)
-{
-	req.itf->subcall_req(req.closure, api, verb, args, callback, closure);
-}
-
-/*
- * Makes a call to the method of name 'api' / 'verb' with the object 'args'.
- * This call is made in the context of the request 'req'.
- * This call is synchronous, it waits untill completion of the request.
- * It returns 0 on success or a negative value on error answer.
- * The object pointed by 'result' is filled and must be released by the caller
- * after its use by calling 'json_object_put'.
- *
- * For convenience, the function calls 'json_object_put' for 'args'.
- * Thus, in the case where 'args' should remain available after
- * the function returns, the function 'json_object_get' shall be used.
- *
- * See also:
- *  - 'afb_req_subcall_req' that is convenient to keep request alive automatically.
- *  - 'afb_req_subcall' that doesn't keep request alive automatically.
- */
-static inline int afb_req_subcall_sync(struct afb_req req, const char *api, const char *verb, struct json_object *args, struct json_object **result)
-{
-	return req.itf->subcallsync(req.closure, api, verb, args, result);
-}
-
-/*
- * Send associated to 'req' a message described by 'fmt' and following parameters
- * to the journal for the verbosity 'level'.
- *
- * 'file', 'line' and 'func' are indicators of position of the code in source files
- * (see macros __FILE__, __LINE__ and __func__).
- *
- * 'level' is defined by syslog standard:
- *      EMERGENCY         0        System is unusable
- *      ALERT             1        Action must be taken immediately
- *      CRITICAL          2        Critical conditions
- *      ERROR             3        Error conditions
- *      WARNING           4        Warning conditions
- *      NOTICE            5        Normal but significant condition
- *      INFO              6        Informational
- *      DEBUG             7        Debug-level messages
- */
-static inline void afb_req_verbose(struct afb_req req, int level, const char *file, int line, const char * func, const char *fmt, ...) __attribute__((format(printf, 6, 7)));
-static inline void afb_req_verbose(struct afb_req req, int level, const char *file, int line, const char * func, const char *fmt, ...)
-{
-	va_list args;
-	va_start(args, fmt);
-	req.itf->vverbose(req.closure, level, file, line, func, fmt, args);
-	va_end(args);
-}
-
-/* macro for setting file, line and function automatically */
-# if !defined(AFB_BINDING_PRAGMA_NO_VERBOSE_DETAILS)
-#define AFB_REQ_VERBOSE(req,level,...) afb_req_verbose(req,level,__FILE__,__LINE__,__func__,__VA_ARGS__)
-#else
-#define AFB_REQ_VERBOSE(req,level,...) afb_req_verbose(req,level,NULL,0,NULL,__VA_ARGS__)
-#endif
-
-/*
- * Check whether the 'permission' is granted or not to the client
- * identified by 'req'.
- *
- * Returns 1 if the permission is granted or 0 otherwise.
- */
-static inline int afb_req_has_permission(struct afb_req req, const char *permission)
-{
-	return req.itf->has_permission(req.closure, permission);
-}
-
-/*
- * Get the application identifier of the client application for the
- * request 'req'.
- *
- * Returns the application identifier or NULL when the application
- * can not be identified.
- *
- * The returned value if not NULL must be freed by the caller
- */
-static inline char *afb_req_get_application_id(struct afb_req req)
-{
-	return req.itf->get_application_id(req.closure);
-}
-
-/*
- * Get the user identifier (UID) of the client application for the
- * request 'req'.
- *
- * Returns -1 when the application can not be identified.
- */
-static inline int afb_req_get_uid(struct afb_req req)
-{
-	return req.itf->get_uid(req.closure);
-}
-