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/*
This file is part of GNUnet.
(C) 2009, 2010, 2011 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file dht/gnunet-service-dht_datacache.h
* @brief GNUnet DHT service's datacache integration
* @author Christian Grothoff
* @author Nathan Evans
*/
#ifndef GNUNET_SERVICE_DHT_DATACACHE_H
#define GNUNET_SERVICE_DHT_DATACACHE_H
#include "gnunet_util_lib.h"
#include "gnunet_block_lib.h"
/**
* Handle a datum we've received from another peer. Cache if
* possible.
*
* @param expiration when will the reply expire
* @param key the query this reply is for
* @param put_path_length number of peers in 'put_path'
* @param put_path path the reply took on put
* @param type type of the reply
* @param data_size number of bytes in 'data'
* @param data application payload data
*/
void
GDS_DATACACHE_handle_put (struct GNUNET_TIME_Absolute expiration,
const struct GNUNET_HashCode * key,
unsigned int put_path_length,
const struct GNUNET_PeerIdentity *put_path,
enum GNUNET_BLOCK_Type type, size_t data_size,
const void *data);
/**
* Handle a GET request we've received from another peer.
*
* @param key the query
* @param type requested data type
* @param xquery extended query
* @param xquery_size number of bytes in xquery
* @param reply_bf where the reply bf is (to be) stored, possibly updated!, can be NULL
* @param reply_bf_mutator mutation value for reply_bf
* @return evaluation result for the local replies
*/
enum GNUNET_BLOCK_EvaluationResult
GDS_DATACACHE_handle_get (const struct GNUNET_HashCode * key,
enum GNUNET_BLOCK_Type type, const void *xquery,
size_t xquery_size,
struct GNUNET_CONTAINER_BloomFilter **reply_bf,
uint32_t reply_bf_mutator);
/**
* Initialize datacache subsystem.
*/
void
GDS_DATACACHE_init (void);
/**
* Shutdown datacache subsystem.
*/
void
GDS_DATACACHE_done (void);
#endif
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