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/*
This file is part of GNUnet
Copyright (C) 2012, 2013 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @author Omar Tarabai
*
* @file
* Plugin API for the peerstore database backend
*
* @defgroup peerstore-plugin Peer Store service plugin API
* Plugin API for the peerstore database backend
* @{
*/
#ifndef GNUNET_PEERSTORE_PLUGIN_H
#define GNUNET_PEERSTORE_PLUGIN_H
#include "gnunet_util_lib.h"
#include "gnunet_peerstore_service.h"
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
/**
* @brief struct returned by the initialization function of the plugin
*/
struct GNUNET_PEERSTORE_PluginFunctions
{
/**
* Closure to pass to all plugin functions.
*/
void *cls;
/**
* Store a record in the peerstore.
* Key is the combination of sub system and peer identity.
* One key can store multiple values.
*
* @param cls closure (internal context for the plugin)
* @param sub_system name of the GNUnet sub system responsible
* @param peer peer identity
* @param value value to be stored
* @param size size of value to be stored
* @param expiry absolute time after which the record is (possibly) deleted
* @param options options related to the store operation
* @param cont continuation called when record is stored
* @param cont_cls continuation closure
* @return #GNUNET_OK on success, else #GNUNET_SYSERR and cont is not called
*/
int
(*store_record) (void *cls,
const char *sub_system,
const struct GNUNET_PeerIdentity *peer,
const char *key,
const void *value,
size_t size,
struct GNUNET_TIME_Absolute expiry,
enum GNUNET_PEERSTORE_StoreOption options,
GNUNET_PEERSTORE_Continuation cont,
void *cont_cls);
/**
* Iterate over the records given an optional peer id
* and/or key.
*
* @param cls closure (internal context for the plugin)
* @param sub_system name of sub system
* @param peer Peer identity (can be NULL)
* @param key entry key string (can be NULL)
* @param iter function to call asynchronously with the results, terminated
* by a NULL result
* @param iter_cls closure for @a iter
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error and iter is not
* called
*/
int
(*iterate_records) (void *cls,
const char *sub_system,
const struct GNUNET_PeerIdentity *peer,
const char *key,
GNUNET_PEERSTORE_Processor iter, void *iter_cls);
/**
* Delete expired records (expiry < now)
*
* @param cls closure (internal context for the plugin)
* @param now time to use as reference
* @param cont continuation called with the number of records expired
* @param cont_cls continuation closure
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error and cont is not
* called
*/
int
(*expire_records) (void *cls,
struct GNUNET_TIME_Absolute now,
GNUNET_PEERSTORE_Continuation cont,
void *cont_cls);
};
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif
#endif
/** @} */ /* end of group */
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