gnunet_datacache_lib.h

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/*
     This file is part of GNUnet
     Copyright (C) 2006, 2009, 2015 GNUnet e.V.

     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     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
     Affero General Public License for more details.

     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */

#ifndef GNUNET_DATACACHE_LIB_H
#define GNUNET_DATACACHE_LIB_H

#include "gnunet_util_lib.h"
#include "gnunet_block_lib.h"

#ifdef __cplusplus
extern "C"
{
#if 0                           /* keep Emacsens' auto-indent happy */
}
#endif
#endif


struct GNUNET_DATACACHE_Handle;


struct GNUNET_DATACACHE_Handle *
GNUNET_DATACACHE_create (const struct GNUNET_CONFIGURATION_Handle *cfg,
                         const char *section);


void
GNUNET_DATACACHE_destroy (struct GNUNET_DATACACHE_Handle *h);


typedef int
(*GNUNET_DATACACHE_Iterator) (void *cls,
                              const struct GNUNET_HashCode *key,
                              size_t data_size,
                              const char *data,
                              enum GNUNET_BLOCK_Type type,
                              struct GNUNET_TIME_Absolute exp,
                              unsigned int path_info_len,
                              const struct GNUNET_PeerIdentity *path_info);


int
GNUNET_DATACACHE_put (struct GNUNET_DATACACHE_Handle *h,
                      const struct GNUNET_HashCode *key,
                      uint32_t xor_distance,
                      size_t data_size,
                      const char *data,
                      enum GNUNET_BLOCK_Type type,
                      struct GNUNET_TIME_Absolute discard_time,
                      unsigned int path_info_len,
                      const struct GNUNET_PeerIdentity *path_info);


unsigned int
GNUNET_DATACACHE_get (struct GNUNET_DATACACHE_Handle *h,
                      const struct GNUNET_HashCode *key,
                      enum GNUNET_BLOCK_Type type,
                      GNUNET_DATACACHE_Iterator iter,
                      void *iter_cls);


unsigned int
GNUNET_DATACACHE_get_random (struct GNUNET_DATACACHE_Handle *h,
                             GNUNET_DATACACHE_Iterator iter,
                             void *iter_cls);


unsigned int
GNUNET_DATACACHE_get_closest (struct GNUNET_DATACACHE_Handle *h,
                              const struct GNUNET_HashCode *key,
                              unsigned int num_results,
                              GNUNET_DATACACHE_Iterator iter,
                              void *iter_cls);


#if 0                           /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif

#endif
  /* end of group */