* @author Christian Grothoff
* @author Nathan Evans
*/
+#include "platform.h"
+#include "gnunet_datacache_lib.h"
+#include "gnunet-service-dht_clients.h"
#include "gnunet-service-dht_datacache.h"
+#include "gnunet-service-dht_routing.h"
+#include "gnunet-service-dht.h"
+
+#define LOG(kind,...) GNUNET_log_from (kind, "dht-dtcache",__VA_ARGS__)
/**
static struct GNUNET_DATACACHE_Handle *datacache;
-/**
- * Entry for inserting data into datacache from the DHT.
- */
-struct DHTPutEntry
-{
- /**
- * Size of data.
- */
- uint16_t data_size;
-
- /**
- * Length of recorded path.
- */
- uint16_t path_length;
-
- /* PATH ENTRIES */
-
- /* PUT DATA */
-
-};
-
-
/**
* Handle a datum we've received from another peer. Cache if
* possible.
*/
void
GDS_DATACACHE_handle_put (struct GNUNET_TIME_Absolute expiration,
- const GNUNET_HashCode *key,
- unsigned int put_path_length,
- const struct GNUNET_PeerIdentity *put_path,
- uint32_t type,
- size_t data_size,
- const void *data)
+ 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)
{
- size_t plen = data_size + put_path_length * sizeof(struct GNUNET_PeerIdentity) + sizeof(struct DHTPutEntry);
- char buf[plen];
- struct DHTPutEntry *pe;
- struct GNUNET_PeerIdentity *pp;
- char *path_offset;
+ int r;
- if (datacache == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "%s request received, but have no datacache!\n",
- "PUT");
- return;
- }
+ if (NULL == datacache)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("%s request received, but have no datacache!\n"), "PUT");
+ return;
+ }
if (data_size >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
- {
- GNUNET_break (0);
- return;
- }
+ {
+ GNUNET_break (0);
+ return;
+ }
/* Put size is actual data size plus struct overhead plus path length (if any) */
- pe = (struct DHTPutEntry *) buf;
- pe->data_size = htons (data_size);
- pe->path_length = htons ((uint16_t) put_path_length);
- pp = (struct GNUNET_PeerIdentity *) &pe[1];
- memcpy (pp, put_path, put_path_length * sizeof (struct GNUNET_PeerIdentity));
- memcpy (&pp[put_path_length],
- data, data_size);
- (void) GNUNET_DATACACHE_put (datacache, key,
- plen, (const char *) pe, type,
- expiration);
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# ITEMS stored in datacache"), 1,
+ GNUNET_NO);
+ r = GNUNET_DATACACHE_put (datacache, key, data_size, data, type, expiration,
+ put_path_length, put_path);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "DATACACHE PUT for key %s [%u] completed (%d) after %u hops\n",
+ GNUNET_h2s (key), data_size, r, put_path_length);
}
/**
* The key this request was about
*/
- GNUNET_HashCode key;
+ struct GNUNET_HashCode key;
/**
* Number of bytes in xquery.
*/
uint32_t reply_bf_mutator;
+ /**
+ * Return value to give back.
+ */
+ enum GNUNET_BLOCK_EvaluationResult eval;
};
* @param size the size of the data identified by key
* @param data the actual data
* @param type the type of the data
- *
+ * @param put_path_length number of peers in 'put_path'
+ * @param put_path path the reply took on put
* @return GNUNET_OK to continue iteration, anything else
* to stop iteration.
*/
static int
-datacache_get_iterator (void *cls, struct GNUNET_TIME_Absolute exp,
- const GNUNET_HashCode * key, size_t size,
- const char *data, enum GNUNET_BLOCK_Type type)
+datacache_get_iterator (void *cls,
+ const struct GNUNET_HashCode * key, size_t size,
+ const char *data, enum GNUNET_BLOCK_Type type,
+ struct GNUNET_TIME_Absolute exp,
+ unsigned int put_path_length,
+ const struct GNUNET_PeerIdentity *put_path)
{
struct GetRequestContext *ctx = cls;
- const struct DHTPutEntry *pe;
- const struct GNUNET_PeerIdentity *pp;
- const char *data;
- size_t data_size;
- uint16_t put_path_length;
enum GNUNET_BLOCK_EvaluationResult eval;
- pe = (const struct DHTPutEntry *) data;
- put_path_length = ntohs (pe->path_length);
- data_size = ntohs (pe->data_size);
-
- if (size !=
- sizeof (struct DHTPutEntry) + data_size +
- (put_path_length * sizeof (struct GNUNET_PeerIdentity)))
- {
- GNUNET_break (0);
- return GNUNET_OK;
- }
- pp = (const struct GNUNET_PeerIdentity *) &pe[1];
- data = (const char*) &pp[put_path_length];
eval =
- GNUNET_BLOCK_evaluate (block_context, type, key,
- ctx->reply_bf,
- ctx->reply_bf_mutator,
- ctx->xquery,
- ctx->xquery_size,
- data,
- data_size);
+ GNUNET_BLOCK_evaluate (GDS_block_context, type, key, ctx->reply_bf,
+ ctx->reply_bf_mutator, ctx->xquery,
+ ctx->xquery_size, data, size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found reply for query %s in datacache, evaluation result is %d\n",
+ GNUNET_h2s (key), (int) eval);
+ ctx->eval = eval;
switch (eval)
{
- case GNUNET_BLOCK_EVALUATION_OK_LAST:
case GNUNET_BLOCK_EVALUATION_OK_MORE:
+ case GNUNET_BLOCK_EVALUATION_OK_LAST:
/* forward to local clients */
- GDS_CLIENT_handle_reply (exp,
- key,
- 0, NULL,
- put_path_length, pp,
- type, data_size, data);
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Good RESULTS found in datacache"), 1,
+ GNUNET_NO);
+ GDS_CLIENTS_handle_reply (exp, key, 0, NULL, put_path_length, put_path,
+ type, size, data);
/* forward to other peers */
- GDS_NEIGHBOURS_handle_reply (type, exp,
- key, put_path_length, pp,
- 0, NULL, data, data_size);
+ GDS_ROUTING_process (type, exp, key, put_path_length, put_path, 0, NULL,
+ data, size);
break;
case GNUNET_BLOCK_EVALUATION_OK_DUPLICATE:
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Duplicate RESULTS found in datacache"), 1,
+ GNUNET_NO);
break;
case GNUNET_BLOCK_EVALUATION_RESULT_INVALID:
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Invalid RESULTS found in datacache"), 1,
+ GNUNET_NO);
+ break;
+ case GNUNET_BLOCK_EVALUATION_RESULT_IRRELEVANT:
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Irrelevant RESULTS found in datacache"), 1,
+ GNUNET_NO);
break;
case GNUNET_BLOCK_EVALUATION_REQUEST_VALID:
GNUNET_break (0);
GNUNET_break_op (0);
return GNUNET_SYSERR;
case GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED:
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Unsupported RESULTS found in datacache"), 1,
+ GNUNET_NO);
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "Unsupported block type (%u) in local response!\n",
- type);
+ _("Unsupported block type (%u) in local response!\n"), type);
break;
}
- return GNUNET_OK;
+ return (eval == GNUNET_BLOCK_EVALUATION_OK_LAST) ? GNUNET_NO : GNUNET_OK;
}
-/**
- * Context containing information about a GET request.
- */
-struct GetRequestContext
-{
- /**
- * extended query (see gnunet_block_lib.h).
- */
- const void *xquery;
-
- /**
- * Bloomfilter to filter out duplicate replies (updated)
- */
- struct GNUNET_CONTAINER_BloomFilter **reply_bf;
-
- /**
- * The key this request was about
- */
- GNUNET_HashCode key;
-
- /**
- * Number of bytes in xquery.
- */
- size_t xquery_size;
-
- /**
- * Mutator value for the reply_bf, see gnunet_block_lib.h
- */
- uint32_t reply_bf_mutator;
-
-};
-
-
/**
* Handle a GET request we've received from another peer.
*
- * @param key the query
+ * @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
*/
-void
-GDS_DATACACHE_handle_get (const GNUNET_HashCode *key,
- uint32_t type,
- const void *xquery,
- size_t xquery_size,
- struct GNUNET_CONTAINER_BloomFilter **reply_bf,
- uint32_t reply_bf_mutator)
+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)
{
struct GetRequestContext ctx;
+ unsigned int r;
if (datacache == NULL)
- return;
+ return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# GET requests given to datacache"),
+ 1, GNUNET_NO);
+ ctx.eval = GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
ctx.key = *key;
ctx.xquery = xquery;
ctx.xquery_size = xquery_size;
ctx.reply_bf = reply_bf;
ctx.reply_bf_mutator = reply_bf_mutator;
- (void) GNUNET_DATACACHE_get (datacache, &msg_ctx->key, type,
- &datacache_get_iterator, &ctx);
+ r = GNUNET_DATACACHE_get (datacache, key, type, &datacache_get_iterator,
+ &ctx);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "DATACACHE GET for key %s completed (%d). %u results found.\n",
+ GNUNET_h2s (key), ctx.eval, r);
+ return ctx.eval;
}
/**
* Initialize datacache subsystem.
*/
-void
+void
GDS_DATACACHE_init ()
{
- datacache = GNUNET_DATACACHE_create (cfg, "dhtcache");
+ datacache = GNUNET_DATACACHE_create (GDS_cfg, "dhtcache");
}
projects / oweals / gnunet.git / blobdiff