* @author Christian Grothoff
*
* TODO:
- * - bound_priority should not charge if we are not loaded (excess-based economy)
- * - have a way to drop queries based on load (or just forward...)
* - introduce random latency in processing
- * - consider more precise latency estimation (per-peer & request)
- * - better algorithm for priority selection for requests we initiate?
- * - tell other peers to stop migration if our PUTs fail (or if
- * we don't support migration per configuration?)
* - more statistics
*/
#include "platform.h"
#include <float.h>
#include "gnunet_constants.h"
#include "gnunet_core_service.h"
+#include "gnunet_dht_service.h"
#include "gnunet_datastore_service.h"
+#include "gnunet_load_lib.h"
#include "gnunet_peer_lib.h"
#include "gnunet_protocols.h"
#include "gnunet_signatures.h"
#define DEBUG_FS GNUNET_NO
+/**
+ * Should we introduce random latency in processing? Required for proper
+ * implementation of GAP, but can be disabled for performance evaluation of
+ * the basic routing algorithm.
+ */
+#define SUPPORT_DELAYS GNUNET_NO
+
/**
* Maximum number of outgoing messages we queue per peer.
*/
#define MAX_QUEUE_PER_PEER 16
+/**
+ * Size for the hash map for DHT requests from the FS
+ * service. Should be about the number of concurrent
+ * DHT requests we plan to make.
+ */
+#define FS_DHT_HT_SIZE 1024
+
/**
* How often do we flush trust values to disk?
*/
#define TRUST_FLUSH_FREQ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
+/**
+ * How often do we at most PUT content into the DHT?
+ */
+#define MAX_DHT_PUT_FREQ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
/**
* Inverse of the probability that we will submit the same query
*/
#define MAX_TRANSMIT_DELAY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 45)
-
-
/**
* Maximum number of requests (from other peers) that we're
* willing to have pending at any given point in time.
- * FIXME: set from configuration.
*/
-static uint64_t max_pending_requests = (32 * 1024);
+static unsigned long long max_pending_requests = (32 * 1024);
/**
*/
void *cont_cls;
+ /**
+ * Do not transmit this pending message until this deadline.
+ */
+ struct GNUNET_TIME_Absolute delay_until;
+
/**
* Size of the reply; actual reply message follows
* at the end of this struct.
*/
struct GNUNET_TIME_Relative avg_delay;
+ /**
+ * Point in time until which this peer does not want us to migrate content
+ * to it.
+ */
+ struct GNUNET_TIME_Absolute migration_blocked;
+
+ /**
+ * Time until when we blocked this peer from migrating
+ * data to us.
+ */
+ struct GNUNET_TIME_Absolute last_migration_block;
+
/**
* Handle for an active request for transmission to this
* peer, or NULL.
*/
struct PendingMessage *pending_messages_tail;
+ /**
+ * How long does it typically take for us to transmit a message
+ * to this peer? (delay between the request being issued and
+ * the callback being invoked).
+ */
+ struct GNUNET_LOAD_Value *transmission_delay;
+
+ /**
+ * Time when the last transmission request was issued.
+ */
+ struct GNUNET_TIME_Absolute last_transmission_request_start;
+
+ /**
+ * ID of delay task for scheduling transmission.
+ */
+ GNUNET_SCHEDULER_TaskIdentifier delayed_transmission_request_task;
+
/**
* Average priority of successful replies. Calculated
* as a moving average: new_avg = ((n-1)*last_avg+curr_prio) / n
*/
struct GNUNET_CORE_InformationRequestContext *irc;
+ /**
+ * Reference to DHT get operation for this request (or NULL).
+ */
+ struct GNUNET_DHT_GetHandle *dht_get;
+
/**
* Hash code of all replies that we have seen so far (only valid
* if client is not NULL since we only track replies like this for
/**
* Remove this request after transmission of the current response.
*/
- int16_t do_remove;
+ int8_t do_remove;
+
+ /**
+ * GNUNET_YES if we should not forward this request to other peers.
+ */
+ int8_t local_only;
/**
* GNUNET_YES if we should not forward this request to other peers.
*/
- int16_t local_only;
+ int8_t forward_only;
};
*/
static struct GNUNET_DATASTORE_Handle *dsh;
+/**
+ * Our block context.
+ */
+static struct GNUNET_BLOCK_Context *block_ctx;
+
+/**
+ * Our block configuration.
+ */
+static struct GNUNET_CONFIGURATION_Handle *block_cfg;
/**
* Our scheduler.
*/
static struct GNUNET_DATASTORE_QueueEntry *mig_qe;
+/**
+ * Request to datastore for DHT PUTs (or NULL).
+ */
+static struct GNUNET_DATASTORE_QueueEntry *dht_qe;
+
+/**
+ * Type we will request for the next DHT PUT round from the datastore.
+ */
+static enum GNUNET_BLOCK_Type dht_put_type = GNUNET_BLOCK_TYPE_FS_KBLOCK;
+
/**
* Where do we store trust information?
*/
*/
static GNUNET_SCHEDULER_TaskIdentifier mig_task;
+/**
+ * ID of task that collects blocks for DHT PUTs.
+ */
+static GNUNET_SCHEDULER_TaskIdentifier dht_task;
+
/**
* What is the maximum frequency at which we are allowed to
* poll the datastore for migration content?
*/
static struct GNUNET_TIME_Relative min_migration_delay;
+/**
+ * Handle for DHT operations.
+ */
+static struct GNUNET_DHT_Handle *dht_handle;
+
/**
* Size of the doubly-linked list of migration blocks.
*/
*/
static int active_migration;
+/**
+ * How many entires with zero anonymity do we currently estimate
+ * to have in the database?
+ */
+static unsigned int zero_anonymity_count_estimate;
+
/**
* Typical priorities we're seeing from other peers right now. Since
* most priorities will be zero, this value is the weighted average of
*/
static double current_priorities;
+/**
+ * Datastore 'GET' load tracking.
+ */
+static struct GNUNET_LOAD_Value *datastore_get_load;
+
+/**
+ * Datastore 'PUT' load tracking.
+ */
+static struct GNUNET_LOAD_Value *datastore_put_load;
+
+/**
+ * How long do requests typically stay in the routing table?
+ */
+static struct GNUNET_LOAD_Value *rt_entry_lifetime;
+
+/**
+ * We've just now completed a datastore request. Update our
+ * datastore load calculations.
+ *
+ * @param start time when the datastore request was issued
+ */
+static void
+update_datastore_delays (struct GNUNET_TIME_Absolute start)
+{
+ struct GNUNET_TIME_Relative delay;
+
+ delay = GNUNET_TIME_absolute_get_duration (start);
+ GNUNET_LOAD_update (datastore_get_load,
+ delay.value);
+}
+
+
/**
* Get the filename under which we would store the GNUNET_HELLO_Message
* for the given host and protocol.
/* ******************* clean up functions ************************ */
-
/**
* Delete the given migration block.
*
unsigned int repl;
/* consider 'cp' as a migration target for mb */
+ if (GNUNET_TIME_absolute_get_remaining (cp->migration_blocked).value > 0)
+ return GNUNET_YES; /* peer has requested no migration! */
if (mb != NULL)
{
GNUNET_PEER_resolve (cp->pid,
}
/* consider scheduling transmission to cp for content migration */
- if (cp->cth != NULL)
+ if (cp->cth != NULL)
return GNUNET_YES;
msize = 0;
pos = mig_head;
msize,
GNUNET_h2s (key));
#endif
+ if (cp->delayed_transmission_request_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (sched, cp->delayed_transmission_request_task);
+ cp->delayed_transmission_request_task = GNUNET_SCHEDULER_NO_TASK;
+ }
cp->cth
= GNUNET_CORE_notify_transmit_ready (core,
0, GNUNET_TIME_UNIT_FOREVER_REL,
const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
+/**
+ * Task that is run periodically to obtain blocks for DHT PUTs.
+ *
+ * @param cls type of blocks to gather
+ * @param tc scheduler context (unused)
+ */
+static void
+gather_dht_put_blocks (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
/**
* If the migration task is not currently running, consider
* (re)scheduling it with the appropriate delay.
{
struct GNUNET_TIME_Relative delay;
+ if (dsh == NULL)
+ return;
if (mig_qe != NULL)
return;
if (mig_task != GNUNET_SCHEDULER_NO_TASK)
}
+/**
+ * If the DHT PUT gathering task is not currently running, consider
+ * (re)scheduling it with the appropriate delay.
+ */
+static void
+consider_dht_put_gathering (void *cls)
+{
+ struct GNUNET_TIME_Relative delay;
+
+ if (dsh == NULL)
+ return;
+ if (dht_qe != NULL)
+ return;
+ if (dht_task != GNUNET_SCHEDULER_NO_TASK)
+ return;
+ if (zero_anonymity_count_estimate > 0)
+ {
+ delay = GNUNET_TIME_relative_divide (GNUNET_DHT_DEFAULT_REPUBLISH_FREQUENCY,
+ zero_anonymity_count_estimate);
+ delay = GNUNET_TIME_relative_min (delay,
+ MAX_DHT_PUT_FREQ);
+ }
+ else
+ {
+ /* if we have NO zero-anonymity content yet, wait 5 minutes for some to
+ (hopefully) appear */
+ delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5);
+ }
+ dht_task = GNUNET_SCHEDULER_add_delayed (sched,
+ delay,
+ &gather_dht_put_blocks,
+ cls);
+}
+
+
/**
* Process content offered for migration.
*
static void
process_migration_content (void *cls,
const GNUNET_HashCode * key,
- uint32_t size,
+ size_t size,
const void *data,
enum GNUNET_BLOCK_Type type,
uint32_t priority,
consider_migration_gathering ();
return;
}
- if (type == GNUNET_BLOCK_TYPE_ONDEMAND)
+ if (type == GNUNET_BLOCK_TYPE_FS_ONDEMAND)
{
if (GNUNET_OK !=
GNUNET_FS_handle_on_demand_block (key, size, data,
expiration, uid,
&process_migration_content,
NULL))
- GNUNET_DATASTORE_get_next (dsh, GNUNET_YES);
+ {
+ GNUNET_DATASTORE_get_next (dsh, GNUNET_YES);
+ }
return;
}
#if DEBUG_FS
}
+/**
+ * Function called upon completion of the DHT PUT operation.
+ */
+static void
+dht_put_continuation (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ GNUNET_DATASTORE_get_next (dsh, GNUNET_YES);
+}
+
+
+/**
+ * Store content in DHT.
+ *
+ * @param cls closure
+ * @param key key for the content
+ * @param size number of bytes in data
+ * @param data content stored
+ * @param type type of the content
+ * @param priority priority of the content
+ * @param anonymity anonymity-level for the content
+ * @param expiration expiration time for the content
+ * @param uid unique identifier for the datum;
+ * maybe 0 if no unique identifier is available
+ */
+static void
+process_dht_put_content (void *cls,
+ const GNUNET_HashCode * key,
+ size_t size,
+ const void *data,
+ enum GNUNET_BLOCK_Type type,
+ uint32_t priority,
+ uint32_t anonymity,
+ struct GNUNET_TIME_Absolute
+ expiration, uint64_t uid)
+{
+ static unsigned int counter;
+ static GNUNET_HashCode last_vhash;
+ static GNUNET_HashCode vhash;
+
+ if (key == NULL)
+ {
+ dht_qe = NULL;
+ consider_dht_put_gathering (cls);
+ return;
+ }
+ /* slightly funky code to estimate the total number of values with zero
+ anonymity from the maximum observed length of a monotonically increasing
+ sequence of hashes over the contents */
+ GNUNET_CRYPTO_hash (data, size, &vhash);
+ if (GNUNET_CRYPTO_hash_cmp (&vhash, &last_vhash) <= 0)
+ {
+ if (zero_anonymity_count_estimate > 0)
+ zero_anonymity_count_estimate /= 2;
+ counter = 0;
+ }
+ last_vhash = vhash;
+ if (counter < 31)
+ counter++;
+ if (zero_anonymity_count_estimate < (1 << counter))
+ zero_anonymity_count_estimate = (1 << counter);
+#if DEBUG_FS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Retrieved block `%s' of type %u for DHT PUT\n",
+ GNUNET_h2s (key),
+ type);
+#endif
+ GNUNET_DHT_put (dht_handle,
+ key,
+ GNUNET_DHT_RO_NONE,
+ type,
+ size,
+ data,
+ expiration,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ &dht_put_continuation,
+ cls);
+}
+
+
/**
* Task that is run periodically to obtain blocks for content
* migration
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
mig_task = GNUNET_SCHEDULER_NO_TASK;
- mig_qe = GNUNET_DATASTORE_get_random (dsh, 0, -1,
- GNUNET_TIME_UNIT_FOREVER_REL,
- &process_migration_content, NULL);
- GNUNET_assert (mig_qe != NULL);
+ if (dsh != NULL)
+ {
+ mig_qe = GNUNET_DATASTORE_get_random (dsh, 0, UINT_MAX,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ &process_migration_content, NULL);
+ GNUNET_assert (mig_qe != NULL);
+ }
+}
+
+
+/**
+ * Task that is run periodically to obtain blocks for DHT PUTs.
+ *
+ * @param cls type of blocks to gather
+ * @param tc scheduler context (unused)
+ */
+static void
+gather_dht_put_blocks (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ dht_task = GNUNET_SCHEDULER_NO_TASK;
+ if (dsh != NULL)
+ {
+ if (dht_put_type == GNUNET_BLOCK_TYPE_FS_ONDEMAND)
+ dht_put_type = GNUNET_BLOCK_TYPE_FS_KBLOCK;
+ dht_qe = GNUNET_DATASTORE_get_zero_anonymity (dsh, 0, UINT_MAX,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ dht_put_type++,
+ &process_dht_put_content, NULL);
+ GNUNET_assert (dht_qe != NULL);
+ }
}
TransmissionContinuation cont;
void *cont_cls;
- GNUNET_assert (pml->pm == pm);
- GNUNET_assert ( (tpid == 0) || (tpid == pml->target->pid) );
cont = pm->cont;
cont_cls = pm->cont_cls;
- destroy_pending_message_list_entry (pml);
- cont (cont_cls, tpid);
+ if (pml != NULL)
+ {
+ GNUNET_assert (pml->pm == pm);
+ GNUNET_assert ( (tpid == 0) || (tpid == pml->target->pid) );
+ destroy_pending_message_list_entry (pml);
+ }
+ else
+ {
+ GNUNET_free (pm);
+ }
+ if (cont != NULL)
+ cont (cont_cls, tpid);
}
-1,
GNUNET_NO);
}
- /* might have already been removed from map in 'process_reply' (if
- there was a unique reply) or never inserted if it was a
- duplicate; hence ignore the return value here */
- (void) GNUNET_CONTAINER_multihashmap_remove (query_request_map,
- &pr->query,
- pr);
+ if (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_remove (query_request_map,
+ &pr->query,
+ pr))
+ {
+ GNUNET_LOAD_update (rt_entry_lifetime,
+ GNUNET_TIME_absolute_get_duration (pr->start_time).value);
+ }
if (pr->qe != NULL)
{
GNUNET_DATASTORE_cancel (pr->qe);
pr->qe = NULL;
}
+ if (pr->dht_get != NULL)
+ {
+ GNUNET_DHT_get_stop (pr->dht_get);
+ pr->dht_get = NULL;
+ }
if (pr->client_request_list != NULL)
{
GNUNET_CONTAINER_DLL_remove (pr->client_request_list->client_list->rl_head,
uint32_t trust;
cp = GNUNET_malloc (sizeof (struct ConnectedPeer));
+ cp->transmission_delay = GNUNET_LOAD_value_init ();
cp->pid = GNUNET_PEER_intern (peer);
fn = get_trust_filename (peer);
GNUNET_PEER_change_rc (cp->pid, -1);
GNUNET_PEER_decrement_rcs (cp->last_p2p_replies, P2P_SUCCESS_LIST_SIZE);
if (NULL != cp->cth)
- GNUNET_CORE_notify_transmit_ready_cancel (cp->cth);
+ {
+ GNUNET_CORE_notify_transmit_ready_cancel (cp->cth);
+ cp->cth = NULL;
+ }
+ if (cp->delayed_transmission_request_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (sched, cp->delayed_transmission_request_task);
+ cp->delayed_transmission_request_task = GNUNET_SCHEDULER_NO_TASK;
+ }
while (NULL != (pm = cp->pending_messages_head))
destroy_pending_message (pm, 0 /* delivery failed */);
+ GNUNET_LOAD_value_free (cp->transmission_delay);
GNUNET_break (0 == cp->pending_requests);
GNUNET_free (cp);
}
GNUNET_DATASTORE_cancel (mig_qe);
mig_qe = NULL;
}
+ if (dht_qe != NULL)
+ {
+ GNUNET_DATASTORE_cancel (dht_qe);
+ dht_qe = NULL;
+ }
if (GNUNET_SCHEDULER_NO_TASK != mig_task)
{
GNUNET_SCHEDULER_cancel (sched, mig_task);
mig_task = GNUNET_SCHEDULER_NO_TASK;
}
+ if (GNUNET_SCHEDULER_NO_TASK != dht_task)
+ {
+ GNUNET_SCHEDULER_cancel (sched, dht_task);
+ dht_task = GNUNET_SCHEDULER_NO_TASK;
+ }
while (client_list != NULL)
handle_client_disconnect (NULL,
client_list->client);
GNUNET_break (0 == GNUNET_CONTAINER_multihashmap_size (query_request_map));
GNUNET_CONTAINER_multihashmap_destroy (query_request_map);
query_request_map = NULL;
+ GNUNET_LOAD_value_free (rt_entry_lifetime);
+ rt_entry_lifetime = NULL;
GNUNET_break (0 == GNUNET_CONTAINER_multihashmap_size (peer_request_map));
GNUNET_CONTAINER_multihashmap_destroy (peer_request_map);
peer_request_map = NULL;
GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
stats = NULL;
}
- GNUNET_DATASTORE_disconnect (dsh,
- GNUNET_NO);
+ if (dsh != NULL)
+ {
+ GNUNET_DATASTORE_disconnect (dsh,
+ GNUNET_NO);
+ dsh = NULL;
+ }
while (mig_head != NULL)
delete_migration_block (mig_head);
GNUNET_assert (0 == mig_size);
- dsh = NULL;
+ GNUNET_DHT_disconnect (dht_handle);
+ dht_handle = NULL;
+ GNUNET_LOAD_value_free (datastore_get_load);
+ datastore_get_load = NULL;
+ GNUNET_LOAD_value_free (datastore_put_load);
+ datastore_put_load = NULL;
+ GNUNET_BLOCK_context_destroy (block_ctx);
+ block_ctx = NULL;
+ GNUNET_CONFIGURATION_destroy (block_cfg);
+ block_cfg = NULL;
sched = NULL;
cfg = NULL;
GNUNET_free_non_null (trustDirectory);
/* ******************* Utility functions ******************** */
+/**
+ * We've had to delay a request for transmission to core, but now
+ * we should be ready. Run it.
+ *
+ * @param cls the 'struct ConnectedPeer' for which a request was delayed
+ * @param tc task context (unused)
+ */
+static void
+delayed_transmission_request (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct ConnectedPeer *cp = cls;
+ struct GNUNET_PeerIdentity pid;
+ struct PendingMessage *pm;
+
+ pm = cp->pending_messages_head;
+ cp->delayed_transmission_request_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_assert (cp->cth == NULL);
+ if (pm == NULL)
+ return;
+ GNUNET_PEER_resolve (cp->pid,
+ &pid);
+ cp->last_transmission_request_start = GNUNET_TIME_absolute_get ();
+ cp->cth = GNUNET_CORE_notify_transmit_ready (core,
+ pm->priority,
+ GNUNET_CONSTANTS_SERVICE_TIMEOUT,
+ &pid,
+ pm->msize,
+ &transmit_to_peer,
+ cp);
+}
+
+
/**
* Transmit messages by copying it to the target buffer
* "buf". "buf" will be NULL and "size" zero if the socket was closed
{
struct ConnectedPeer *cp = cls;
char *cbuf = buf;
- struct GNUNET_PeerIdentity pid;
struct PendingMessage *pm;
+ struct PendingMessage *next_pm;
+ struct GNUNET_TIME_Absolute now;
+ struct GNUNET_TIME_Relative min_delay;
struct MigrationReadyBlock *mb;
struct MigrationReadyBlock *next;
struct PutMessage migm;
size_t msize;
unsigned int i;
+ struct GNUNET_PeerIdentity pid;
cp->cth = NULL;
if (NULL == buf)
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Dropping message, core too busy.\n");
#endif
+ GNUNET_LOAD_update (cp->transmission_delay,
+ UINT64_MAX);
return 0;
- }
+ }
+ GNUNET_LOAD_update (cp->transmission_delay,
+ GNUNET_TIME_absolute_get_duration (cp->last_transmission_request_start).value);
+ now = GNUNET_TIME_absolute_get ();
msize = 0;
- while ( (NULL != (pm = cp->pending_messages_head) ) &&
+ min_delay = GNUNET_TIME_UNIT_FOREVER_REL;
+ next_pm = cp->pending_messages_head;
+ while ( (NULL != (pm = next_pm) ) &&
(pm->msize <= size) )
{
+ next_pm = pm->next;
+ if (pm->delay_until.value > now.value)
+ {
+ min_delay = GNUNET_TIME_relative_min (min_delay,
+ GNUNET_TIME_absolute_get_remaining (pm->delay_until));
+ continue;
+ }
memcpy (&cbuf[msize], &pm[1], pm->msize);
msize += pm->msize;
size -= pm->msize;
+ if (NULL == pm->pml)
+ {
+ GNUNET_CONTAINER_DLL_remove (cp->pending_messages_head,
+ cp->pending_messages_tail,
+ pm);
+ cp->pending_requests--;
+ }
destroy_pending_message (pm, cp->pid);
}
- if (NULL != pm)
- {
- GNUNET_PEER_resolve (cp->pid,
- &pid);
- cp->cth = GNUNET_CORE_notify_transmit_ready (core,
- pm->priority,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- &pid,
- pm->msize,
- &transmit_to_peer,
- cp);
+ if (pm != NULL)
+ min_delay = GNUNET_TIME_UNIT_ZERO;
+ if (NULL != cp->pending_messages_head)
+ {
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == cp->delayed_transmission_request_task);
+ cp->delayed_transmission_request_task
+ = GNUNET_SCHEDULER_add_delayed (sched,
+ min_delay,
+ &delayed_transmission_request,
+ cp);
}
- else
+ if (pm == NULL)
{
+ GNUNET_PEER_resolve (cp->pid,
+ &pid);
next = mig_head;
while (NULL != (mb = next))
{
GNUNET_PEER_change_rc (mb->target_list[i], -1);
mb->target_list[i] = 0;
mb->used_targets++;
+ memset (&migm, 0, sizeof (migm));
migm.header.size = htons (sizeof (migm) + mb->size);
migm.header.type = htons (GNUNET_MESSAGE_TYPE_FS_PUT);
migm.type = htonl (mb->type);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Pushing migration block `%s' (%u bytes) to `%s'\n",
GNUNET_h2s (&mb->query),
- mb->size,
+ (unsigned int) mb->size,
GNUNET_i2s (&pid));
#endif
break;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Migration block `%s' (%u bytes) is not on migration list for peer `%s'\n",
GNUNET_h2s (&mb->query),
- mb->size,
+ (unsigned int) mb->size,
GNUNET_i2s (&pid));
#endif
}
}
#if DEBUG_FS
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Transmitting %u bytes to peer %u\n",
- msize,
- cp->pid);
+ "Transmitting %u bytes to peer with PID %u\n",
+ (unsigned int) msize,
+ (unsigned int) cp->pid);
#endif
return msize;
}
GNUNET_assert (pm->next == NULL);
GNUNET_assert (pm->pml == NULL);
- pml = GNUNET_malloc (sizeof (struct PendingMessageList));
- pml->req = pr;
- pml->target = cp;
- pml->pm = pm;
- pm->pml = pml;
- GNUNET_CONTAINER_DLL_insert (pr->pending_head,
- pr->pending_tail,
- pml);
+ if (pr != NULL)
+ {
+ pml = GNUNET_malloc (sizeof (struct PendingMessageList));
+ pml->req = pr;
+ pml->target = cp;
+ pml->pm = pm;
+ pm->pml = pml;
+ GNUNET_CONTAINER_DLL_insert (pr->pending_head,
+ pr->pending_tail,
+ pml);
+ }
pos = cp->pending_messages_head;
while ( (pos != NULL) &&
(pm->priority < pos->priority) )
destroy_pending_message (cp->pending_messages_tail, 0);
GNUNET_PEER_resolve (cp->pid, &pid);
if (NULL != cp->cth)
- GNUNET_CORE_notify_transmit_ready_cancel (cp->cth);
+ {
+ GNUNET_CORE_notify_transmit_ready_cancel (cp->cth);
+ cp->cth = NULL;
+ }
+ if (cp->delayed_transmission_request_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (sched, cp->delayed_transmission_request_task);
+ cp->delayed_transmission_request_task = GNUNET_SCHEDULER_NO_TASK;
+ }
/* need to schedule transmission */
+ cp->last_transmission_request_start = GNUNET_TIME_absolute_get ();
cp->cth = GNUNET_CORE_notify_transmit_ready (core,
cp->pending_messages_head->priority,
MAX_TRANSMIT_DELAY,
/**
- * Mingle hash with the mingle_number to produce different bits.
+ * Test if the DATABASE (GET) load on this peer is too high
+ * to even consider processing the query at
+ * all.
+ *
+ * @return GNUNET_YES if the load is too high to do anything (load high)
+ * GNUNET_NO to process normally (load normal)
+ * GNUNET_SYSERR to process for free (load low)
*/
-static void
-mingle_hash (const GNUNET_HashCode * in,
- int32_t mingle_number,
- GNUNET_HashCode * hc)
+static int
+test_get_load_too_high (uint32_t priority)
{
- GNUNET_HashCode m;
+ double ld;
- GNUNET_CRYPTO_hash (&mingle_number,
- sizeof (int32_t),
- &m);
- GNUNET_CRYPTO_hash_xor (&m, in, hc);
+ ld = GNUNET_LOAD_get_load (datastore_get_load);
+ if (ld < 1)
+ {
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# requests done for free (low load)"),
+ 1,
+ GNUNET_NO);
+ return GNUNET_SYSERR;
+ }
+ if (ld <= priority)
+ {
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# requests done for a price (normal load)"),
+ 1,
+ GNUNET_NO);
+ return GNUNET_NO;
+ }
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# requests dropped due to high load"),
+ 1,
+ GNUNET_NO);
+ return GNUNET_YES;
}
+
+
/**
- * Test if the load on this peer is too high
+ * Test if the DATABASE (PUT) load on this peer is too high
* to even consider processing the query at
- * all.
+ * all.
*
- * @return GNUNET_YES if the load is too high, GNUNET_NO otherwise
+ * @return GNUNET_YES if the load is too high to do anything (load high)
+ * GNUNET_NO to process normally (load normal or low)
*/
static int
-test_load_too_high ()
+test_put_load_too_high (uint32_t priority)
{
- return GNUNET_NO; // FIXME
+ double ld;
+
+ if (GNUNET_LOAD_get_average (datastore_put_load) < 50)
+ return GNUNET_NO; /* very fast */
+ ld = GNUNET_LOAD_get_load (datastore_put_load);
+ if ( (ld < 1) || (ld < priority) )
+ return GNUNET_NO;
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# storage requests dropped due to high load"),
+ 1,
+ GNUNET_NO);
+ return GNUNET_YES;
}
BLOOMFILTER_K);
for (i=0;i<pr->replies_seen_off;i++)
{
- mingle_hash (&pr->replies_seen[i], pr->mingle, &mhash);
+ GNUNET_BLOCK_mingle_hash (&pr->replies_seen[i],
+ pr->mingle,
+ &mhash);
GNUNET_CONTAINER_bloomfilter_add (pr->bf, &mhash);
}
}
pr);
return; /* this target round failed */
}
- /* FIXME: if we are "quite" busy, we may still want to skip
- this round; need more load detection code! */
no_route = GNUNET_YES;
}
P2P_SUCCESS_LIST_SIZE);
for (i=0;i<P2P_SUCCESS_LIST_SIZE;i++)
if (cp->last_p2p_replies[i] == pr->cp->pid)
- score += 1; /* likely successful based on hot path */
+ score += 1.0; /* likely successful based on hot path */
}
else
{
CS2P_SUCCESS_LIST_SIZE);
for (i=0;i<CS2P_SUCCESS_LIST_SIZE;i++)
if (cp->last_client_replies[i] == pr->client_request_list->client_list->client)
- score += 1; /* likely successful based on hot path */
+ score += 1.0; /* likely successful based on hot path */
}
/* 3b) include latency */
if (cp->avg_delay.value < 4 * TTL_DECREMENT)
- score += 1; /* likely fast based on latency */
+ score += 1.0; /* likely fast based on latency */
/* 3c) include priorities */
if (cp->avg_priority <= pr->remaining_priority / 2.0)
- score += 1; /* likely successful based on priorities */
+ score += 1.0; /* likely successful based on priorities */
/* 3d) penalize for queue size */
score -= (2.0 * cp->pending_requests / (double) MAX_QUEUE_PER_PEER);
/* 3e) include peer proximity */
score -= (2.0 * (GNUNET_CRYPTO_hash_distance_u32 (key,
&pr->query)) / (double) UINT32_MAX);
+ /* 4) super-bonus for being the known target */
+ if (pr->target_pid == cp->pid)
+ score += 100.0;
/* store best-fit in closure */
#if DEBUG_FS
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
}
+/**
+ * Iterator called on each result obtained for a DHT
+ * operation that expects a reply
+ *
+ * @param cls closure
+ * @param exp when will this value expire
+ * @param key key of the result
+ * @param get_path NULL-terminated array of pointers
+ * to the peers on reverse GET path (or NULL if not recorded)
+ * @param put_path NULL-terminated array of pointers
+ * to the peers on the PUT path (or NULL if not recorded)
+ * @param type type of the result
+ * @param size number of bytes in data
+ * @param data pointer to the result data
+ */
+static void
+process_dht_reply (void *cls,
+ struct GNUNET_TIME_Absolute exp,
+ const GNUNET_HashCode * key,
+ const struct GNUNET_PeerIdentity * const *get_path,
+ const struct GNUNET_PeerIdentity * const *put_path,
+ enum GNUNET_BLOCK_Type type,
+ size_t size,
+ const void *data);
+
+
/**
* We're processing a GET request and have decided
* to forward it to other peers. This function is called periodically
}
if (GNUNET_YES == pr->local_only)
return; /* configured to not do P2P search */
+ /* (0) try DHT */
+ if ( (0 == pr->anonymity_level) &&
+ (GNUNET_YES != pr->forward_only) &&
+ (pr->type != GNUNET_BLOCK_TYPE_FS_DBLOCK) &&
+ (pr->type != GNUNET_BLOCK_TYPE_FS_IBLOCK) )
+ {
+ pr->dht_get = GNUNET_DHT_get_start (dht_handle,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ pr->type,
+ &pr->query,
+ GNUNET_DHT_RO_NONE,
+ pr->bf,
+ pr->mingle,
+ pr->namespace,
+ (pr->namespace != NULL) ? sizeof (GNUNET_HashCode) : 0,
+ &process_dht_reply,
+ pr);
+ }
/* (1) select target */
psc.pr = pr;
psc.target_score = -DBL_MAX;
}
/* (3) reserve reply bandwidth */
- cp = GNUNET_CONTAINER_multihashmap_get (connected_peers,
- &psc.target.hashPubKey);
- GNUNET_assert (NULL != cp);
- pr->irc = GNUNET_CORE_peer_change_preference (sched, cfg,
- &psc.target,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- GNUNET_BANDWIDTH_value_init (UINT32_MAX),
- DBLOCK_SIZE * 2,
- cp->inc_preference,
- &target_reservation_cb,
- pr);
- cp->inc_preference = 0;
+ if (GNUNET_NO == pr->forward_only)
+ {
+ cp = GNUNET_CONTAINER_multihashmap_get (connected_peers,
+ &psc.target.hashPubKey);
+ GNUNET_assert (NULL != cp);
+ pr->irc = GNUNET_CORE_peer_change_preference (sched, cfg,
+ &psc.target,
+ GNUNET_CONSTANTS_SERVICE_TIMEOUT,
+ GNUNET_BANDWIDTH_value_init (UINT32_MAX),
+ DBLOCK_SIZE * 2,
+ cp->inc_preference,
+ &target_reservation_cb,
+ pr);
+ cp->inc_preference = 0;
+ }
+ else
+ {
+ /* force forwarding */
+ static struct GNUNET_BANDWIDTH_Value32NBO zerobw;
+ target_reservation_cb (pr, &psc.target,
+ zerobw, zerobw, 0, 0.0);
+ }
}
switch (pr->type)
{
- case GNUNET_BLOCK_TYPE_DBLOCK:
- case GNUNET_BLOCK_TYPE_IBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_DBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_IBLOCK:
/* only one reply expected, done with the request! */
destroy_pending_request (pr);
break;
case GNUNET_BLOCK_TYPE_ANY:
- case GNUNET_BLOCK_TYPE_KBLOCK:
- case GNUNET_BLOCK_TYPE_SBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_KBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_SBLOCK:
break;
default:
GNUNET_break (0);
const void *data;
/**
- * Who gave us this reply? NULL for local host.
+ * Who gave us this reply? NULL for local host (or DHT)
*/
struct ConnectedPeer *sender;
*/
size_t size;
- /**
- * Namespace that this reply belongs to
- * (if it is of type SBLOCK).
- */
- GNUNET_HashCode namespace;
-
/**
* Type of the block.
*/
*/
uint32_t priority;
+ /**
+ * Evaluation result (returned).
+ */
+ enum GNUNET_BLOCK_EvaluationResult eval;
+
/**
* Did we finish processing the associated request?
*/
int finished;
+
+ /**
+ * Did we find a matching request?
+ */
+ int request_found;
};
struct PutMessage *pm;
struct ConnectedPeer *cp;
struct GNUNET_TIME_Relative cur_delay;
- GNUNET_HashCode chash;
- GNUNET_HashCode mhash;
size_t msize;
#if DEBUG_FS
GNUNET_NO);
if (prq->sender != NULL)
{
- /* FIXME: should we be more precise here and not use
- "start_time" but a peer-specific time stamp? */
cur_delay = GNUNET_TIME_absolute_get_duration (pr->start_time);
prq->sender->avg_delay.value
= (prq->sender->avg_delay.value *
GNUNET_SERVER_client_keep (pr->client_request_list->client_list->client);
}
}
- GNUNET_CRYPTO_hash (prq->data,
- prq->size,
- &chash);
- switch (prq->type)
+ prq->eval = GNUNET_BLOCK_evaluate (block_ctx,
+ prq->type,
+ key,
+ &pr->bf,
+ pr->mingle,
+ pr->namespace, (pr->namespace != NULL) ? sizeof (GNUNET_HashCode) : 0,
+ prq->data,
+ prq->size);
+ switch (prq->eval)
{
- case GNUNET_BLOCK_TYPE_DBLOCK:
- case GNUNET_BLOCK_TYPE_IBLOCK:
- /* only possible reply, stop requesting! */
+ case GNUNET_BLOCK_EVALUATION_OK_MORE:
+ break;
+ case GNUNET_BLOCK_EVALUATION_OK_LAST:
while (NULL != pr->pending_head)
destroy_pending_message_list_entry (pr->pending_head);
if (pr->qe != NULL)
if (pr->client_request_list != NULL)
GNUNET_SERVER_receive_done (pr->client_request_list->client_list->client,
GNUNET_YES);
- GNUNET_DATASTORE_cancel (pr->qe);
+ GNUNET_DATASTORE_cancel (pr->qe);
pr->qe = NULL;
}
pr->do_remove = GNUNET_YES;
GNUNET_CONTAINER_multihashmap_remove (query_request_map,
key,
pr));
+ GNUNET_LOAD_update (rt_entry_lifetime,
+ GNUNET_TIME_absolute_get_duration (pr->start_time).value);
break;
- case GNUNET_BLOCK_TYPE_SBLOCK:
- if (pr->namespace == NULL)
- {
- GNUNET_break (0);
- return GNUNET_YES;
- }
- if (0 != memcmp (pr->namespace,
- &prq->namespace,
- sizeof (GNUNET_HashCode)))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Reply mismatched in terms of namespace. Discarded.\n"));
- return GNUNET_YES; /* wrong namespace */
- }
- /* then: fall-through! */
- case GNUNET_BLOCK_TYPE_KBLOCK:
- case GNUNET_BLOCK_TYPE_NBLOCK:
- if (pr->bf != NULL)
- {
- mingle_hash (&chash, pr->mingle, &mhash);
- if (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (pr->bf,
- &mhash))
- {
- GNUNET_STATISTICS_update (stats,
- gettext_noop ("# duplicate replies discarded (bloomfilter)"),
- 1,
- GNUNET_NO);
-#if DEBUG_FS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Duplicate response `%s', discarding.\n",
- GNUNET_h2s (&mhash));
-#endif
- return GNUNET_YES; /* duplicate */
- }
+ case GNUNET_BLOCK_EVALUATION_OK_DUPLICATE:
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# duplicate replies discarded (bloomfilter)"),
+ 1,
+ GNUNET_NO);
#if DEBUG_FS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "New response `%s', adding to filter.\n",
- GNUNET_h2s (&mhash));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Duplicate response `%s', discarding.\n",
+ GNUNET_h2s (&mhash));
#endif
- }
- if (pr->client_request_list != NULL)
- {
- if (pr->replies_seen_size == pr->replies_seen_off)
- GNUNET_array_grow (pr->replies_seen,
- pr->replies_seen_size,
- pr->replies_seen_size * 2 + 4);
- pr->replies_seen[pr->replies_seen_off++] = chash;
- }
- if ( (pr->bf == NULL) ||
- (pr->client_request_list != NULL) )
- refresh_bloomfilter (pr);
- GNUNET_CONTAINER_bloomfilter_add (pr->bf,
- &mhash);
- break;
- default:
+ return GNUNET_YES; /* duplicate */
+ case GNUNET_BLOCK_EVALUATION_RESULT_INVALID:
+ return GNUNET_YES; /* wrong namespace */
+ case GNUNET_BLOCK_EVALUATION_REQUEST_VALID:
+ GNUNET_break (0);
+ return GNUNET_YES;
+ case GNUNET_BLOCK_EVALUATION_REQUEST_INVALID:
GNUNET_break (0);
return GNUNET_YES;
+ case GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED:
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Unsupported block type %u\n"),
+ prq->type);
+ return GNUNET_NO;
+ }
+ if (pr->client_request_list != NULL)
+ {
+ if (pr->replies_seen_size == pr->replies_seen_off)
+ GNUNET_array_grow (pr->replies_seen,
+ pr->replies_seen_size,
+ pr->replies_seen_size * 2 + 4);
+ GNUNET_CRYPTO_hash (prq->data,
+ prq->size,
+ &pr->replies_seen[pr->replies_seen_off++]);
+ refresh_bloomfilter (pr);
+ }
+ if (NULL == prq->sender)
+ {
+#if DEBUG_FS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Found result for query `%s' in local datastore\n",
+ GNUNET_h2s (key));
+#endif
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# results found locally"),
+ 1,
+ GNUNET_NO);
}
prq->priority += pr->remaining_priority;
pr->remaining_priority = 0;
+ pr->results_found++;
+ prq->request_found = GNUNET_YES;
if (NULL != pr->client_request_list)
{
GNUNET_STATISTICS_update (stats,
reply = GNUNET_malloc (msize + sizeof (struct PendingMessage));
reply->cont = &transmit_reply_continuation;
reply->cont_cls = pr;
+#if SUPPORT_DELAYS
+ reply->delay_until
+ = GNUNET_TIME_relative_to_absolute (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
+ GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ TTL_DECREMENT)));
+#endif
reply->msize = msize;
reply->priority = UINT32_MAX; /* send replies first! */
pm = (struct PutMessage*) &reply[1];
}
+/**
+ * Iterator called on each result obtained for a DHT
+ * operation that expects a reply
+ *
+ * @param cls closure
+ * @param exp when will this value expire
+ * @param key key of the result
+ * @param get_path NULL-terminated array of pointers
+ * to the peers on reverse GET path (or NULL if not recorded)
+ * @param put_path NULL-terminated array of pointers
+ * to the peers on the PUT path (or NULL if not recorded)
+ * @param type type of the result
+ * @param size number of bytes in data
+ * @param data pointer to the result data
+ */
+static void
+process_dht_reply (void *cls,
+ struct GNUNET_TIME_Absolute exp,
+ const GNUNET_HashCode * key,
+ const struct GNUNET_PeerIdentity * const *get_path,
+ const struct GNUNET_PeerIdentity * const *put_path,
+ enum GNUNET_BLOCK_Type type,
+ size_t size,
+ const void *data)
+{
+ struct PendingRequest *pr = cls;
+ struct ProcessReplyClosure prq;
+
+ memset (&prq, 0, sizeof (prq));
+ prq.data = data;
+ prq.expiration = exp;
+ prq.size = size;
+ prq.type = type;
+ process_reply (&prq, key, pr);
+}
+
+
+
/**
* Continuation called to notify client about result of the
* operation.
int success,
const char *msg)
{
- /* FIXME */
+ struct GNUNET_TIME_Absolute *start = cls;
+ struct GNUNET_TIME_Relative delay;
+
+ delay = GNUNET_TIME_absolute_get_duration (*start);
+ GNUNET_free (start);
+ GNUNET_LOAD_update (datastore_put_load,
+ delay.value);
+ if (GNUNET_OK == success)
+ return;
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# datastore 'put' failures"),
+ 1,
+ GNUNET_NO);
}
struct GNUNET_TIME_Absolute expiration;
GNUNET_HashCode query;
struct ProcessReplyClosure prq;
- const struct SBlock *sb;
+ struct GNUNET_TIME_Absolute *start;
+ struct GNUNET_TIME_Relative block_time;
+ double putl;
+ struct ConnectedPeer *cp;
+ struct PendingMessage *pm;
+ struct MigrationStopMessage *msm;
msize = ntohs (message->size);
if (msize < sizeof (struct PutMessage))
type = ntohl (put->type);
expiration = GNUNET_TIME_absolute_ntoh (put->expiration);
+ if (type == GNUNET_BLOCK_TYPE_FS_ONDEMAND)
+ return GNUNET_SYSERR;
if (GNUNET_OK !=
- GNUNET_BLOCK_check_block (type,
- &put[1],
- dsize,
- &query))
+ GNUNET_BLOCK_get_key (block_ctx,
+ type,
+ &put[1],
+ dsize,
+ &query))
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
- if (type == GNUNET_BLOCK_TYPE_ONDEMAND)
- return GNUNET_SYSERR;
- if (GNUNET_BLOCK_TYPE_SBLOCK == type)
- {
- sb = (const struct SBlock*) &put[1];
- GNUNET_CRYPTO_hash (&sb->subspace,
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- &prq.namespace);
- }
-
#if DEBUG_FS
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received result for query `%s' from peer `%4s'\n",
prq.expiration = expiration;
prq.priority = 0;
prq.finished = GNUNET_NO;
+ prq.request_found = GNUNET_NO;
GNUNET_CONTAINER_multihashmap_get_multiple (query_request_map,
&query,
&process_reply,
prq.sender->inc_preference += CONTENT_BANDWIDTH_VALUE + 1000 * prq.priority;
prq.sender->trust += prq.priority;
}
- if (GNUNET_YES == active_migration)
- {
+ if ( (GNUNET_YES == active_migration) &&
+ (GNUNET_NO == test_put_load_too_high (prq.priority)) )
+ {
#if DEBUG_FS
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Replicating result for query `%s' with priority %u\n",
GNUNET_h2s (&query),
prq.priority);
#endif
+ start = GNUNET_malloc (sizeof (struct GNUNET_TIME_Absolute));
+ *start = GNUNET_TIME_absolute_get ();
GNUNET_DATASTORE_put (dsh,
0, &query, dsize, &put[1],
type, prq.priority, 1 /* anonymity */,
1 + prq.priority, MAX_DATASTORE_QUEUE,
GNUNET_CONSTANTS_SERVICE_TIMEOUT,
&put_migration_continuation,
- NULL);
+ start);
+ }
+ putl = GNUNET_LOAD_get_load (datastore_put_load);
+ if ( (GNUNET_NO == prq.request_found) &&
+ ( (GNUNET_YES != active_migration) ||
+ (putl > 2.0) ) )
+ {
+ cp = GNUNET_CONTAINER_multihashmap_get (connected_peers,
+ &other->hashPubKey);
+ if (GNUNET_TIME_absolute_get_duration (cp->last_migration_block).value < 5000)
+ return GNUNET_OK; /* already blocked */
+ /* We're too busy; send MigrationStop message! */
+ if (GNUNET_YES != active_migration)
+ putl = 1.0 + GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 5);
+ block_time = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
+ 5000 + GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ (unsigned int) (60000 * putl * putl)));
+
+ cp->last_migration_block = GNUNET_TIME_relative_to_absolute (block_time);
+ pm = GNUNET_malloc (sizeof (struct PendingMessage) +
+ sizeof (struct MigrationStopMessage));
+ pm->msize = sizeof (struct MigrationStopMessage);
+ pm->priority = UINT32_MAX;
+ msm = (struct MigrationStopMessage*) &pm[1];
+ msm->header.size = htons (sizeof (struct MigrationStopMessage));
+ msm->header.type = htons (GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP);
+ msm->duration = GNUNET_TIME_relative_hton (block_time);
+ add_to_pending_messages_for_peer (cp,
+ pm,
+ NULL);
}
return GNUNET_OK;
}
+/**
+ * Handle P2P "MIGRATION_STOP" message.
+ *
+ * @param cls closure, always NULL
+ * @param other the other peer involved (sender or receiver, NULL
+ * for loopback messages where we are both sender and receiver)
+ * @param message the actual message
+ * @param latency reported latency of the connection with 'other'
+ * @param distance reported distance (DV) to 'other'
+ * @return GNUNET_OK to keep the connection open,
+ * GNUNET_SYSERR to close it (signal serious error)
+ */
+static int
+handle_p2p_migration_stop (void *cls,
+ const struct GNUNET_PeerIdentity *other,
+ const struct GNUNET_MessageHeader *message,
+ struct GNUNET_TIME_Relative latency,
+ uint32_t distance)
+{
+ struct ConnectedPeer *cp;
+ const struct MigrationStopMessage *msm;
+
+ msm = (const struct MigrationStopMessage*) message;
+ cp = GNUNET_CONTAINER_multihashmap_get (connected_peers,
+ &other->hashPubKey);
+ if (cp == NULL)
+ {
+ GNUNET_break (0);
+ return GNUNET_OK;
+ }
+ cp->migration_blocked = GNUNET_TIME_relative_to_absolute (GNUNET_TIME_relative_ntoh (msm->duration));
+ return GNUNET_OK;
+}
+
+
+
/* **************************** P2P GET Handling ************************ */
static void
process_local_reply (void *cls,
const GNUNET_HashCode * key,
- uint32_t size,
+ size_t size,
const void *data,
enum GNUNET_BLOCK_Type type,
uint32_t priority,
struct PendingRequest *pr = cls;
struct ProcessReplyClosure prq;
struct CheckDuplicateRequestClosure cdrc;
- const struct SBlock *sb;
- GNUNET_HashCode dhash;
- GNUNET_HashCode mhash;
GNUNET_HashCode query;
+ unsigned int old_rf;
if (NULL == key)
{
GNUNET_h2s (key),
type);
#endif
- if (type == GNUNET_BLOCK_TYPE_ONDEMAND)
+ if (type == GNUNET_BLOCK_TYPE_FS_ONDEMAND)
{
#if DEBUG_FS
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
&process_local_reply,
pr))
if (pr->qe != NULL)
- GNUNET_DATASTORE_get_next (dsh, GNUNET_YES);
- return;
- }
- /* check for duplicates */
- GNUNET_CRYPTO_hash (data, size, &dhash);
- mingle_hash (&dhash,
- pr->mingle,
- &mhash);
- if ( (pr->bf != NULL) &&
- (GNUNET_YES ==
- GNUNET_CONTAINER_bloomfilter_test (pr->bf,
- &mhash)) )
- {
-#if DEBUG_FS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Result from datastore filtered by bloomfilter (duplicate).\n");
-#endif
- GNUNET_STATISTICS_update (stats,
- gettext_noop ("# results filtered by query bloomfilter"),
- 1,
- GNUNET_NO);
- if (pr->qe != NULL)
- GNUNET_DATASTORE_get_next (dsh, GNUNET_YES);
+ {
+ GNUNET_DATASTORE_get_next (dsh, GNUNET_YES);
+ }
return;
}
-#if DEBUG_FS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Found result for query `%s' in local datastore\n",
- GNUNET_h2s (key));
-#endif
- GNUNET_STATISTICS_update (stats,
- gettext_noop ("# results found locally"),
- 1,
- GNUNET_NO);
- pr->results_found++;
+ old_rf = pr->results_found;
memset (&prq, 0, sizeof (prq));
prq.data = data;
prq.expiration = expiration;
prq.size = size;
- if (GNUNET_BLOCK_TYPE_SBLOCK == type)
- {
- sb = (const struct SBlock*) data;
- GNUNET_CRYPTO_hash (&sb->subspace,
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- &prq.namespace);
- }
- if (GNUNET_OK != GNUNET_BLOCK_check_block (type,
- data,
- size,
- &query))
+ if (GNUNET_OK !=
+ GNUNET_BLOCK_get_key (block_ctx,
+ type,
+ data,
+ size,
+ &query))
{
GNUNET_break (0);
GNUNET_DATASTORE_remove (dsh,
prq.type = type;
prq.priority = priority;
prq.finished = GNUNET_NO;
+ prq.request_found = GNUNET_NO;
+ if ( (old_rf == 0) &&
+ (pr->results_found == 0) )
+ update_datastore_delays (pr->start_time);
process_reply (&prq, key, pr);
if (prq.finished == GNUNET_YES)
return;
if (pr->qe == NULL)
return; /* done here */
- if ( (type == GNUNET_BLOCK_TYPE_DBLOCK) ||
- (type == GNUNET_BLOCK_TYPE_IBLOCK) )
+ if (prq.eval == GNUNET_BLOCK_EVALUATION_OK_LAST)
{
GNUNET_DATASTORE_get_next (dsh, GNUNET_NO);
return;
}
if ( (pr->client_request_list == NULL) &&
- ( (GNUNET_YES == test_load_too_high()) ||
+ ( (GNUNET_YES == test_get_load_too_high (0)) ||
(pr->results_found > 5 + 2 * pr->priority) ) )
{
#if DEBUG_FS > 2
* @param cp the peer making the request
* @return effective priority
*/
-static uint32_t
+static int32_t
bound_priority (uint32_t prio_in,
struct ConnectedPeer *cp)
{
#define N ((double)128.0)
uint32_t ret;
double rret;
- /* FIXME: check if load is low and we
- hence should not charge... */
+ int ld;
+
+ ld = test_get_load_too_high (0);
+ if (ld == GNUNET_SYSERR)
+ return 0; /* excess resources */
ret = change_host_trust (cp, prio_in);
if (ret > 0)
{
current_priorities
= (current_priorities * (N-1) + rret)/N;
}
+ if ( (ld == GNUNET_YES) && (ret > 0) )
+ {
+ /* try with charging */
+ ld = test_get_load_too_high (ret);
+ }
+ if (ld == GNUNET_YES)
+ {
+ /* undo charge */
+ if (ret != 0)
+ change_host_trust (cp, -ret);
+ return -1; /* not enough resources */
+ }
#undef N
return ret;
}
uint32_t bm;
size_t bfsize;
uint32_t ttl_decrement;
+ int32_t priority;
enum GNUNET_BLOCK_Type type;
int have_ns;
}
gm = (const struct GetMessage*) message;
type = ntohl (gm->type);
- switch (type)
- {
- case GNUNET_BLOCK_TYPE_ANY:
- case GNUNET_BLOCK_TYPE_DBLOCK:
- case GNUNET_BLOCK_TYPE_IBLOCK:
- case GNUNET_BLOCK_TYPE_KBLOCK:
- case GNUNET_BLOCK_TYPE_SBLOCK:
- break;
- default:
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
bm = ntohl (gm->hash_bitmap);
bits = 0;
while (bm > 0)
opt = (const GNUNET_HashCode*) &gm[1];
bfsize = msize - sizeof (struct GetMessage) + bits * sizeof (GNUNET_HashCode);
bm = ntohl (gm->hash_bitmap);
- if ( (0 != (bm & GET_MESSAGE_BIT_SKS_NAMESPACE)) &&
- (type != GNUNET_BLOCK_TYPE_SBLOCK) )
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
bits = 0;
cps = GNUNET_CONTAINER_multihashmap_get (connected_peers,
&other->hashPubKey);
/* note that we can really only check load here since otherwise
peers could find out that we are overloaded by not being
disconnected after sending us a malformed query... */
- if (GNUNET_YES == test_load_too_high ())
+ priority = bound_priority (ntohl (gm->priority), cps);
+ if (priority < 0)
{
#if DEBUG_FS
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
GNUNET_NO);
return GNUNET_OK;
}
-
#if DEBUG_FS
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received request for `%s' of type %u from peer `%4s' with flags %u\n",
pr->namespace = (GNUNET_HashCode*) &pr[1];
memcpy (&pr[1], &opt[bits++], sizeof (GNUNET_HashCode));
}
+ if ( (GNUNET_LOAD_get_load (cp->transmission_delay) > 3) ||
+ (GNUNET_LOAD_get_average (cp->transmission_delay) >
+ GNUNET_CONSTANTS_MAX_CORK_DELAY.value * 2 + GNUNET_LOAD_get_average (rt_entry_lifetime)) )
+ {
+ /* don't have BW to send to peer, or would likely take longer than we have for it,
+ so at best indirect the query */
+ priority = 0;
+ pr->forward_only = GNUNET_YES;
+ }
pr->type = type;
pr->mingle = ntohl (gm->filter_mutator);
if (0 != (bm & GET_MESSAGE_BIT_TRANSMIT_TO))
pr->target_pid = GNUNET_PEER_intern ((const struct GNUNET_PeerIdentity*) &opt[bits++]);
-
pr->anonymity_level = 1;
- pr->priority = bound_priority (ntohl (gm->priority), cps);
+ pr->priority = (uint32_t) priority;
pr->ttl = bound_ttl (ntohl (gm->ttl), pr->priority);
pr->query = gm->query;
/* decrement ttl (always) */
/* calculate change in traffic preference */
cps->inc_preference += pr->priority * 1000 + QUERY_BANDWIDTH_VALUE;
/* process locally */
- if (type == GNUNET_BLOCK_TYPE_DBLOCK)
+ if (type == GNUNET_BLOCK_TYPE_FS_DBLOCK)
type = GNUNET_BLOCK_TYPE_ANY; /* to get on-demand as well */
timeout = GNUNET_TIME_relative_multiply (BASIC_DATASTORE_REQUEST_DELAY,
(pr->priority + 1));
- pr->qe = GNUNET_DATASTORE_get (dsh,
- &gm->query,
- type,
- pr->priority + 1,
- MAX_DATASTORE_QUEUE,
- timeout,
- &process_local_reply,
- pr);
+ if (GNUNET_YES != pr->forward_only)
+ pr->qe = GNUNET_DATASTORE_get (dsh,
+ &gm->query,
+ type,
+ pr->priority + 1,
+ MAX_DATASTORE_QUEUE,
+ timeout,
+ &process_local_reply,
+ pr);
+ else
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# requests forwarded due to high load"),
+ 1,
+ GNUNET_NO);
- /* Are multiple results possible? If so, start processing remotely now! */
+ /* Are multiple results possible (and did we look locally)? If so, start processing remotely now! */
switch (pr->type)
{
- case GNUNET_BLOCK_TYPE_DBLOCK:
- case GNUNET_BLOCK_TYPE_IBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_DBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_IBLOCK:
/* only one result, wait for datastore */
- break;
+ if (GNUNET_YES != pr->forward_only)
+ break;
default:
if (pr->task == GNUNET_SCHEDULER_NO_TASK)
pr->task = GNUNET_SCHEDULER_add_now (sched,
if (GNUNET_CONTAINER_heap_get_size (requests_by_expiration_heap) > max_pending_requests)
{
pr = GNUNET_CONTAINER_heap_peek (requests_by_expiration_heap);
+ GNUNET_assert (pr != NULL);
destroy_pending_request (pr);
}
return GNUNET_OK;
GNUNET_h2s (&sm->query),
(unsigned int) type);
#endif
- switch (type)
- {
- case GNUNET_BLOCK_TYPE_ANY:
- case GNUNET_BLOCK_TYPE_DBLOCK:
- case GNUNET_BLOCK_TYPE_IBLOCK:
- case GNUNET_BLOCK_TYPE_KBLOCK:
- case GNUNET_BLOCK_TYPE_SBLOCK:
- case GNUNET_BLOCK_TYPE_NBLOCK:
- break;
- default:
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client,
- GNUNET_SYSERR);
- return;
- }
-
cl = client_list;
while ( (cl != NULL) &&
(cl->client != client) )
client_list = cl;
}
/* detect duplicate KBLOCK requests */
- if ( (type == GNUNET_BLOCK_TYPE_KBLOCK) ||
- (type == GNUNET_BLOCK_TYPE_NBLOCK) ||
+ if ( (type == GNUNET_BLOCK_TYPE_FS_KBLOCK) ||
+ (type == GNUNET_BLOCK_TYPE_FS_NBLOCK) ||
(type == GNUNET_BLOCK_TYPE_ANY) )
{
crl = cl->rl_head;
1,
GNUNET_NO);
pr = GNUNET_malloc (sizeof (struct PendingRequest) +
- ((type == GNUNET_BLOCK_TYPE_SBLOCK) ? sizeof(GNUNET_HashCode) : 0));
+ ((type == GNUNET_BLOCK_TYPE_FS_SBLOCK) ? sizeof(GNUNET_HashCode) : 0));
crl = GNUNET_malloc (sizeof (struct ClientRequestList));
memset (crl, 0, sizeof (struct ClientRequestList));
crl->client_list = cl;
sc * sizeof (GNUNET_HashCode));
pr->replies_seen_off = sc;
pr->anonymity_level = ntohl (sm->anonymity_level);
+ pr->start_time = GNUNET_TIME_absolute_get ();
refresh_bloomfilter (pr);
pr->query = sm->query;
if (0 == (1 & ntohl (sm->options)))
pr->local_only = GNUNET_YES;
switch (type)
{
- case GNUNET_BLOCK_TYPE_DBLOCK:
- case GNUNET_BLOCK_TYPE_IBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_DBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_IBLOCK:
if (0 != memcmp (&sm->target,
&all_zeros,
sizeof (GNUNET_HashCode)))
pr->target_pid = GNUNET_PEER_intern ((const struct GNUNET_PeerIdentity*) &sm->target);
break;
- case GNUNET_BLOCK_TYPE_SBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_SBLOCK:
pr->namespace = (GNUNET_HashCode*) &pr[1];
memcpy (&pr[1], &sm->target, sizeof (GNUNET_HashCode));
break;
&sm->query,
pr,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
- if (type == GNUNET_BLOCK_TYPE_DBLOCK)
+ if (type == GNUNET_BLOCK_TYPE_FS_DBLOCK)
type = GNUNET_BLOCK_TYPE_ANY; /* get on-demand blocks too! */
pr->qe = GNUNET_DATASTORE_get (dsh,
&sm->query,
GNUNET_MESSAGE_TYPE_FS_GET, 0 },
{ &handle_p2p_put,
GNUNET_MESSAGE_TYPE_FS_PUT, 0 },
+ { &handle_p2p_migration_stop,
+ GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP,
+ sizeof (struct MigrationStopMessage) },
{ NULL, 0, 0 }
};
static const struct GNUNET_SERVER_MessageHandler handlers[] = {
0 },
{NULL, NULL, 0, 0}
};
+ unsigned long long enc = 128;
sched = s;
cfg = c;
stats = GNUNET_STATISTICS_create (sched, "fs", cfg);
- min_migration_delay = GNUNET_TIME_UNIT_SECONDS; // FIXME: get from config
- connected_peers = GNUNET_CONTAINER_multihashmap_create (128); // FIXME: get size from config
- query_request_map = GNUNET_CONTAINER_multihashmap_create (128); // FIXME: get size from config
- peer_request_map = GNUNET_CONTAINER_multihashmap_create (128); // FIXME: get size from config
+ min_migration_delay = GNUNET_TIME_UNIT_SECONDS;
+ if ( (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (cfg,
+ "fs",
+ "MAX_PENDING_REQUESTS",
+ &max_pending_requests)) ||
+ (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (cfg,
+ "fs",
+ "EXPECTED_NEIGHBOUR_COUNT",
+ &enc)) ||
+ (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_time (cfg,
+ "fs",
+ "MIN_MIGRATION_DELAY",
+ &min_migration_delay)) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Configuration fails to specify certain parameters, assuming default values."));
+ }
+ connected_peers = GNUNET_CONTAINER_multihashmap_create (enc);
+ query_request_map = GNUNET_CONTAINER_multihashmap_create (max_pending_requests);
+ rt_entry_lifetime = GNUNET_LOAD_value_init ();
+ peer_request_map = GNUNET_CONTAINER_multihashmap_create (enc);
requests_by_expiration_heap = GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN);
core = GNUNET_CORE_connect (sched,
cfg,
connected_peers = NULL;
GNUNET_CONTAINER_multihashmap_destroy (query_request_map);
query_request_map = NULL;
+ GNUNET_LOAD_value_free (rt_entry_lifetime);
+ rt_entry_lifetime = NULL;
GNUNET_CONTAINER_heap_destroy (requests_by_expiration_heap);
requests_by_expiration_heap = NULL;
GNUNET_CONTAINER_multihashmap_destroy (peer_request_map);
_("Content migration is enabled, will start to gather data\n"));
consider_migration_gathering ();
}
+ consider_dht_put_gathering (NULL);
GNUNET_SERVER_disconnect_notify (server,
&handle_client_disconnect,
NULL);
GNUNET_SCHEDULER_shutdown (sched);
return;
}
+ datastore_get_load = GNUNET_LOAD_value_init ();
+ datastore_put_load = GNUNET_LOAD_value_init ();
+ block_cfg = GNUNET_CONFIGURATION_create ();
+ GNUNET_CONFIGURATION_set_value_string (block_cfg,
+ "block",
+ "PLUGINS",
+ "fs");
+ block_ctx = GNUNET_BLOCK_context_create (block_cfg);
+ GNUNET_assert (NULL != block_ctx);
+ dht_handle = GNUNET_DHT_connect (sched,
+ cfg,
+ FS_DHT_HT_SIZE);
if ( (GNUNET_OK != GNUNET_FS_indexing_init (sched, cfg, dsh)) ||
(GNUNET_OK != main_init (sched, server, cfg)) )
{
GNUNET_SCHEDULER_shutdown (sched);
GNUNET_DATASTORE_disconnect (dsh, GNUNET_NO);
dsh = NULL;
+ GNUNET_DHT_disconnect (dht_handle);
+ dht_handle = NULL;
+ GNUNET_BLOCK_context_destroy (block_ctx);
+ block_ctx = NULL;
+ GNUNET_CONFIGURATION_destroy (block_cfg);
+ block_cfg = NULL;
+ GNUNET_LOAD_value_free (datastore_get_load);
+ datastore_get_load = NULL;
+ GNUNET_LOAD_value_free (datastore_put_load);
+ datastore_put_load = NULL;
return;
}
}
projects / oweals / gnunet.git / blobdiff