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/*
* Copyright (C) 2015-2020 "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.
*/
/**< @file afb/afb-binding-v3.h */
#pragma once
/******************************************************************************/
#include "afb-auth.h"
#include "afb-event-x2.h"
#include "afb-req-x2.h"
#include "afb-session-x2.h"
#include "afb-api-x3.h"
/******************************************************************************/
/**
* @page validity-v3 Validity of a binding v3
*
* A binding V3 MUST have at least two exported symbols of name:
*
* - @ref afbBindingV3root
* - @ref afbBindingV3 and/or @ref afbBindingV3entry
*
* @ref afbBindingV3root is automatically created when **AFB_BINDING_VERSION == 3**
* without programmer action, as a hidden variable linked as *weak*.
*
* The symbols @ref afbBindingV3 and **afbBindingV3entry** are under control
* of the programmer.
*
* The symbol @ref afbBindingV3 if defined is used, as in binding v2, to describe
* an API that will be declared during pre-initialization of bindings.
*
* The symbol @ref afbBindingV3entry if defined will be called during
* pre-initialization.
*
* If @ref afbBindingV3entry and @ref afbBindingV3 are both defined, it is an
* error to fill the field @ref preinit of @ref afbBindingV3.
*
* @see afb_binding_v3
* @see afbBindingV3root
* @see afbBindingV3entry
* @see afbBindingV3
*/
/**
* Description of one verb as provided for binding API version 3
*/
struct afb_verb_v3
{
/** name of the verb, NULL only at end of the array */
const char *verb;
/** callback function implementing the verb */
void (*callback)(struct afb_req_x2 *req);
/** required authorization, can be NULL */
const struct afb_auth *auth;
/** some info about the verb, can be NULL */
const char *info;
/**< data for the verb callback */
void *vcbdata;
/** authorization and session requirements of the verb */
uint16_t session;
/** is the verb glob name */
uint16_t glob: 1;
};
/**
* Description of the bindings of type version 3
*/
struct afb_binding_v3
{
/** api name for the binding, can't be NULL */
const char *api;
/** textual specification of the binding, can be NULL */
const char *specification;
/** some info about the api, can be NULL */
const char *info;
/** array of descriptions of verbs terminated by a NULL name, can be NULL */
const struct afb_verb_v3 *verbs;
/** callback at load of the binding */
int (*preinit)(struct afb_api_x3 *api);
/** callback for starting the service */
int (*init)(struct afb_api_x3 *api);
/** callback for handling events */
void (*onevent)(struct afb_api_x3 *api, const char *event, struct json_object *object);
/** userdata for afb_api_x3 */
void *userdata;
/** space separated list of provided class(es) */
const char *provide_class;
/** space separated list of required class(es) */
const char *require_class;
/** space separated list of required API(es) */
const char *require_api;
/** avoids concurrent requests to verbs */
unsigned noconcurrency: 1;
};
/**
* Default root binding's api that can be used when no explicit context is
* available.
*
* When @ref afbBindingV3 is defined, this variable records the corresponding
* api handler. Otherwise, it points to an fake handles that allows logging
* and api creation.
*
* @see afbBindingV3entry
* @see afbBindingV3
* @see @ref validity-v3
*/
#if AFB_BINDING_VERSION != 3
extern
#endif
struct afb_api_x3 *afbBindingV3root __attribute__((weak));
/**
* Pre-initialization function.
*
* If this function is defined and exported in the produced binding
* (shared object), it will be called during pre-initialization with the
* rootapi defined by \ref afbBindingV3root
*
* @param rootapi the root api (equals to afbBindingV3root)
*
* @return the function must return a negative integer on error to abort the
* initialization of the binding. Any positive or zero returned value is a
* interpreted as a success.
* @see afbBindingV3root
* @see afbBindingV3
* @see @ref validity-v3
*/
extern int afbBindingV3entry(struct afb_api_x3 *rootapi);
/**
* Static definition of the root api of the binding.
*
* This symbol if defined describes the API of the binding.
*
* If it is not defined then the function @ref afbBindingV3entry must be defined
*
* @see afbBindingV3root
* @see afbBindingV3entry
* @see @ref validity-v3
*/
extern const struct afb_binding_v3 afbBindingV3;
#include "afb-auth.h"
#include "afb-session-x2.h"
#include "afb-verbosity.h"
#include "afb-event-x2.h"
#include "afb-req-x2.h"
#include "afb-api-x3.h"
/*
* Macros for logging messages
*/
#if defined(AFB_BINDING_PRAGMA_NO_VERBOSE_DATA)
# define AFB_API_VERBOSE_V3(api,level,...) \
do { if(level <= AFB_VERBOSITY_LEVEL_ERROR) \
afb_api_x3_verbose(api,level,__FILE__,__LINE__,NULL,__VA_ARGS__); \
else afb_api_x3_verbose(api,level,__FILE__,__LINE__,NULL); } while(0)
# define AFB_REQ_VERBOSE_V3(req,level,...) \
do { if(level <= AFB_VERBOSITY_LEVEL_ERROR) \
afb_req_x2_verbose(req,level,__FILE__,__LINE__,NULL,__VA_ARGS__); \
else afb_req_x2_verbose(req,level,__FILE__,__LINE__,NULL); } while(0)
#elif defined(AFB_BINDING_PRAGMA_NO_VERBOSE_DETAILS)
# define AFB_API_VERBOSE_V3(api,level,...) \
afb_api_x3_verbose(api,level,NULL,0,NULL,__VA_ARGS__)
# define AFB_REQ_VERBOSE_V3(req,level,...) \
afb_req_x2_verbose(req,level,NULL,0,NULL,__VA_ARGS__)
#else
# define AFB_API_VERBOSE_V3(api,level,...) \
afb_api_x3_verbose(api,level,__FILE__,__LINE__,__func__,__VA_ARGS__)
# define AFB_REQ_VERBOSE_V3(req,level,...) \
afb_req_x2_verbose(req,level,__FILE__,__LINE__,__func__,__VA_ARGS__)
#endif
#define _AFB_API_LOGGING_V3_(api,llevel,...) \
do{ if(afb_api_wants_log_level((api),(llevel))) AFB_API_VERBOSE_V3((api),(llevel),__VA_ARGS__); }while(0)
#define _AFB_REQ_LOGGING_V3_(req,llevel,...) \
do{ if(afb_req_wants_log_level((req),(llevel))) AFB_REQ_VERBOSE_V3((req),(llevel),__VA_ARGS__); }while(0)
#define AFB_API_ERROR_V3(api,...) _AFB_API_LOGGING_V3_(api,AFB_SYSLOG_LEVEL_ERROR,__VA_ARGS__)
#define AFB_API_WARNING_V3(api,...) _AFB_API_LOGGING_V3_(api,AFB_SYSLOG_LEVEL_WARNING,__VA_ARGS__)
#define AFB_API_NOTICE_V3(api,...) _AFB_API_LOGGING_V3_(api,AFB_SYSLOG_LEVEL_NOTICE,__VA_ARGS__)
#define AFB_API_INFO_V3(api,...) _AFB_API_LOGGING_V3_(api,AFB_SYSLOG_LEVEL_INFO,__VA_ARGS__)
#define AFB_API_DEBUG_V3(api,...) _AFB_API_LOGGING_V3_(api,AFB_SYSLOG_LEVEL_DEBUG,__VA_ARGS__)
#define AFB_REQ_ERROR_V3(req,...) _AFB_REQ_LOGGING_V3_(req,AFB_SYSLOG_LEVEL_ERROR,__VA_ARGS__)
#define AFB_REQ_WARNING_V3(req,...) _AFB_REQ_LOGGING_V3_(req,AFB_SYSLOG_LEVEL_WARNING,__VA_ARGS__)
#define AFB_REQ_NOTICE_V3(req,...) _AFB_REQ_LOGGING_V3_(req,AFB_SYSLOG_LEVEL_NOTICE,__VA_ARGS__)
#define AFB_REQ_INFO_V3(req,...) _AFB_REQ_LOGGING_V3_(req,AFB_SYSLOG_LEVEL_INFO,__VA_ARGS__)
#define AFB_REQ_DEBUG_V3(req,...) _AFB_REQ_LOGGING_V3_(req,AFB_SYSLOG_LEVEL_DEBUG,__VA_ARGS__)
#define AFB_ERROR_V3(...) AFB_API_ERROR_V3(afbBindingV3root,__VA_ARGS__)
#define AFB_WARNING_V3(...) AFB_API_WARNING_V3(afbBindingV3root,__VA_ARGS__)
#define AFB_NOTICE_V3(...) AFB_API_NOTICE_V3(afbBindingV3root,__VA_ARGS__)
#define AFB_INFO_V3(...) AFB_API_INFO_V3(afbBindingV3root,__VA_ARGS__)
#define AFB_DEBUG_V3(...) AFB_API_DEBUG_V3(afbBindingV3root,__VA_ARGS__)
#define afb_get_root_api_v3() (afbBindingV3root)
#define afb_get_logmask_v3() (afbBindingV3root->logmask)
#define afb_get_verbosity_v3() AFB_SYSLOG_LEVEL_TO_VERBOSITY(_afb_verbomask_to_upper_level_(afbBindingV3root->logmask))
#define afb_daemon_get_event_loop_v3() afb_api_get_event_loop(afbBindingV3root)
#define afb_daemon_get_user_bus_v3() afb_api_get_user_bus(afbBindingV3root)
#define afb_daemon_get_system_bus_v3() afb_api_get_system_bus(afbBindingV3root)
#define afb_daemon_broadcast_event_v3(...) afb_api_broadcast_event(afbBindingV3root,__VA_ARGS__)
#define afb_daemon_make_event_v3(...) afb_api_make_event(afbBindingV3root,__VA_ARGS__)
#define afb_daemon_verbose_v3(...) afb_api_verbose(afbBindingV3root,__VA_ARGS__)
#define afb_daemon_rootdir_get_fd_v3() afb_api_rootdir_get_fd(afbBindingV3root)
#define afb_daemon_rootdir_open_locale_v3(...) afb_api_rootdir_open_locale(afbBindingV3root,__VA_ARGS__)
#define afb_daemon_queue_job_v3(...) afb_api_queue_job(afbBindingV3root,__VA_ARGS__)
#define afb_daemon_require_api_v3(...) afb_api_require_api(afbBindingV3root,__VA_ARGS__)
#define afb_daemon_add_alias_v3(...) afb_api_add_alias(afbBindingV3root,__VA_ARGS__)
#define afb_service_call_v3(...) afb_api_call(afbBindingV3root,__VA_ARGS__)
#define afb_service_call_sync_v3(...) afb_api_call_sync(afbBindingV3root,__VA_ARGS__)
#define afb_service_call_legacy_v3(...) afb_api_call_legacy(afbBindingV3root,__VA_ARGS__)
#define afb_service_call_sync_legacy_v3(...) afb_api_call_sync_legacy(afbBindingV3root,__VA_ARGS__)
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