freeswitch/src/include/switch_limit.h

137 lines
4.3 KiB
C

/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Rupa Schomaker <rupa@rupa.com>
*
* switch_limit.h - Limit generic implementations
*
*/
/*!
\defgroup limit1 LIMIT code
\ingroup core1
\{
*/
#ifndef _SWITCH_LIMIT_H
#define _SWITCH_LIMIT_H
SWITCH_BEGIN_EXTERN_C
/*!
\brief Initilize the LIMIT Core System
\param pool the memory pool to use for long term allocations
\note Generally called by the core_init
*/
SWITCH_DECLARE(void) switch_limit_init(switch_memory_pool_t *pool);
/*!
\brief Increment resource.
\param backend to use
\param realm
\param resource
\param max - 0 means no limit, just count
\param interval - 0 means no interval
\return true/false - true ok, false over limit
*/
SWITCH_DECLARE(switch_status_t) switch_limit_incr(const char *backend, switch_core_session_t *session, const char *realm, const char *resource, const int max, const int interval);
/*!
\brief Release resource.
\param backend to use
\param realm
\param resource
\return true/false - true ok, false over limit
*/
SWITCH_DECLARE(switch_status_t) switch_limit_release(const char *backend, switch_core_session_t *session, const char *realm, const char *resource);
/*!
\brief get usage count for resource
\param backend to use
\param realm
\param resource
\param rcount - output paramter, rate counter
*/
SWITCH_DECLARE(int) switch_limit_usage(const char *backend, const char *realm, const char *resource, uint32_t *rcount);
/*!
\brief reset interval usage counter for a given resource
\param backend
\param realm
\param resource
*/
SWITCH_DECLARE(switch_status_t) switch_limit_interval_reset(const char *backend, const char *realm, const char *resource);
/*!
\brief reset all usage counters
\param backend to use
*/
SWITCH_DECLARE(switch_status_t) switch_limit_reset(const char *backend);
/*!
\brief fire event for limit usage
\param backend to use
\param realm
\param resource
\param usage
\param rate
\param max
\param ratemax
*/
SWITCH_DECLARE(void) switch_limit_fire_event(const char *backend, const char *realm, const char *resource, uint32_t usage, uint32_t rate, uint32_t max, uint32_t ratemax);
/*!
\brief retrieve arbitrary status information
\param backend to use
\note caller must free returned value
*/
SWITCH_DECLARE(char *) switch_limit_status(const char *backend);
/*! callback to init a backend */
#define SWITCH_LIMIT_INCR(name) static switch_status_t name (switch_core_session_t *session, const char *realm, const char *resource, const int max, const int interval)
#define SWITCH_LIMIT_RELEASE(name) static switch_status_t name (switch_core_session_t *session, const char *realm, const char *resource)
#define SWITCH_LIMIT_USAGE(name) static int name (const char *realm, const char *resource, uint32_t *rcount)
#define SWITCH_LIMIT_RESET(name) static switch_status_t name (void)
#define SWITCH_LIMIT_INTERVAL_RESET(name) static switch_status_t name (const char *realm, const char *resource)
#define SWITCH_LIMIT_STATUS(name) static char * name (void)
#define LIMIT_IGNORE_TRANSFER_VARIABLE "limit_ignore_transfer"
#define LIMIT_BACKEND_VARIABLE "limit_backend"
#define LIMIT_EVENT_USAGE "limit::usage"
#define LIMIT_DEF_XFER_EXTEN "limit_exceeded"
SWITCH_END_EXTERN_C
#endif
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