/*
This file is part of GNUnet.
- Copyright (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009, 2010, 2011, 2015 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#include "gnunet_util_lib.h"
#include "gnunet_block_lib.h"
+#include "gnunet_dht_service.h"
/**
* Handle a datum we've received from another peer. Cache if
*
* @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_length number of peers in @a put_path
* @param put_path path the reply took on put
+ * @param get_path_length number of peers in @a get_path
+ * @param get_path path the reply took on get
* @param type type of the reply
- * @param data_size number of bytes in 'data'
+ * @param data_size number of bytes in @a data
* @param data application payload data
*/
void
GDS_DATACACHE_handle_put (struct GNUNET_TIME_Absolute expiration,
- const struct GNUNET_HashCode * key,
+ 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,
+ unsigned int get_path_length,
+ const struct GNUNET_PeerIdentity *get_path,
+ enum GNUNET_BLOCK_Type type,
+ size_t data_size,
const void *data);
/**
* Handle a GET request we've received from another peer.
*
+ * @param trail_id trail where the reply needs to be send to
+ * @param options routing options (to be passed along)
* @param key the query
* @param type requested data type
* @param xquery extended query
- * @param xquery_size number of bytes in xquery
+ * @param xquery_size number of bytes in @a 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
+ * @param reply_bf_mutator mutation value for @a reply_bf
* @return evaluation result for the local replies
+ *
+ * FIXME: also pass options, so we know to record paths or not...
*/
enum GNUNET_BLOCK_EvaluationResult
-GDS_DATACACHE_handle_get (const struct GNUNET_HashCode * key,
- enum GNUNET_BLOCK_Type type, const void *xquery,
+GDS_DATACACHE_handle_get (const struct GNUNET_HashCode *trail_id,
+ enum GNUNET_DHT_RouteOption options,
+ 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,
- uint32_t get_path_length,
- struct GNUNET_PeerIdentity *get_path,
- struct GNUNET_PeerIdentity *next_hop,
- struct GNUNET_PeerIdentity *source_peer);
+ uint32_t reply_bf_mutator);
+
+
+/**
+ * Obtain a random key from the datacache.
+ * Used by Whanau for load-balancing.
+ *
+ * @param[out] key where to store the key of a random element,
+ * randomized by PRNG if datacache is empty
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR if the datacache is empty
+ */
+int
+GDS_DATACACHE_get_random_key (struct GNUNET_HashCode *key);
+
+
+/**
+ * Handle a request for data close to a key that we have received from
+ * another peer.
+ *
+ * @param trail_id trail where the reply needs to be send to
+ * @param key the location at which the peer is looking for data that is close
+ */
+void
+GDS_DATACACHE_get_successors (const struct GNUNET_HashCode *trail_id,
+ const struct GNUNET_HashCode *key);
/**