/**
* Number of peers which should perform a PUT out of 100 peers
*/
-#define PUT_PROBABILITY 50
+#define PUT_PROBABILITY 100
+
+/**
+ * Percentage of peers that should act maliciously.
+ * These peers will never start PUT/GET request.
+ * n_active and n_malicious should not intersect.
+ */
+#define MALICIOUS_PEERS 0
/**
* Configuration
};
+#if ENABLE_MALICIOUS
+/**
+ * Context for a peer which should act maliciously.
+ */
+struct MaliciousContext
+{
+ /**
+ * The linked peer context
+ */
+ struct Context *ctx;
+
+ /**
+ * Handler to the DHT service
+ */
+ struct GNUNET_DHT_Handle *dht;
+};
+
+/**
+ * List of all the malicious peers contexts.
+ */
+struct Context **malicious_peer_contexts = NULL;
+
+#endif
+
/**
* Context for a peer which actively does DHT PUT/GET
*/
*/
static unsigned int num_peers;
+#if ENABLE_MALICIOUS
+/**
+ * Number or malicious peers.
+ */
+static unsigned int n_malicious;
+#endif
+
/**
* Number of active peers
*/
*/
static unsigned int n_gets_fail;
+/**
+ * Replication degree
+ */
+static unsigned int replication;
+
+/**
+ * Number of times we try to find the successor circle formation
+ */
+static unsigned int max_searches;
+
+/**
+ * Testbed Operation (to get stats).
+ */
+static struct GNUNET_TESTBED_Operation *bandwidth_stats_op;
+
+/**
+ * To get successor stats.
+ */
+static struct GNUNET_TESTBED_Operation *successor_stats_op;
+
+/**
+ * Testbed peer handles.
+ */
+static struct GNUNET_TESTBED_Peer **testbed_handles;
+
+/**
+ * Total number of messages sent by peer.
+ */
+static uint64_t outgoing_bandwidth;
+
+/**
+ * Total number of messages received by peer.
+ */
+static uint64_t incoming_bandwidth;
+
+/**
+ * Average number of hops taken to do put.
+ */
+static double average_put_path_length;
+
+/**
+ * Average number of hops taken to do get.
+ */
+static double average_get_path_length;
+
+/**
+ * Total put path length across all peers.
+ */
+static unsigned int total_put_path_length;
+
+/**
+ * Total get path length across all peers.
+ */
+static unsigned int total_get_path_length;
+
+/**
+ * Hashmap to store pair of peer and its corresponding successor.
+ */
+static struct GNUNET_CONTAINER_MultiHashMap *successor_peer_hashmap;
+
+/**
+ * Key to start the lookup on successor_peer_hashmap.
+ */
+static struct GNUNET_HashCode *start_key;
+
+/**
+ * Flag used to get the start_key.
+ */
+static int flag = 0;
+
+/**
+ * Task to collect peer and its current successor statistics.
+ */
+static GNUNET_SCHEDULER_TaskIdentifier successor_stats_task;
+
+/**
+ * Closure for successor_stats_task.
+ */
+struct Collect_Stat_Context
+{
+ /**
+ * Current Peer Context.
+ */
+ struct Context *service_connect_ctx;
+
+ /**
+ * Testbed operation acting on this peer
+ */
+ struct GNUNET_TESTBED_Operation *op;
+};
+
+/**
+ * List of all the peers contexts.
+ */
+struct Context **peer_contexts = NULL;
+
+/**
+ * Counter to keep track of peers added to peer_context lists.
+ */
+static int peers_started = 0;
+
+
+/**
+ * Should we do a PUT (mode = 0) or GET (mode = 1);
+ */
+static enum
+{
+ MODE_PUT = 0,
+
+ MODE_GET = 1
+} mode;
+
+/**
+ * Task that collects successor statistics from all the peers.
+ * @param cls
+ * @param tc
+ */
+static void
+collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
/**
* Shutdown task. Cleanup all resources and operations.
for (cnt=0; cnt < num_peers; cnt++)
{
if (NULL != a_ctx[cnt].op)
- GNUNET_TESTBED_operation_done (a_ctx[cnt].op);
+ GNUNET_TESTBED_operation_done (a_ctx[cnt].op); //FIXME: assertion fails.
/* Cleanup active context if this peer is an active peer */
ac = a_ctx[cnt].ac;
GNUNET_free (a_ctx);
a_ctx = NULL;
}
+ if(NULL != bandwidth_stats_op)
+ GNUNET_TESTBED_operation_done (bandwidth_stats_op);
+ bandwidth_stats_op = NULL;
GNUNET_free_non_null (a_ac);
}
+/**
+ * Stats callback. Finish the stats testbed operation and when all stats have
+ * been iterated, shutdown the test.
+ *
+ * @param cls closure
+ * @param op the operation that has been finished
+ * @param emsg error message in case the operation has failed; will be NULL if
+ * operation has executed successfully.
+ */
+static void
+bandwidth_stats_cont (void *cls,
+ struct GNUNET_TESTBED_Operation *op,
+ const char *emsg)
+{
+ INFO ("# Outgoing bandwidth: %u\n", outgoing_bandwidth);
+ INFO ("# Incoming bandwidth: %u\n", incoming_bandwidth);
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * Process statistic values.
+ *
+ * @param cls closure
+ * @param peer the peer the statistic belong to
+ * @param subsystem name of subsystem that created the statistic
+ * @param name the name of the datum
+ * @param value the current value
+ * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
+ * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
+ */
+static int
+bandwidth_stats_iterator (void *cls,
+ const struct GNUNET_TESTBED_Peer *peer,
+ const char *subsystem,
+ const char *name,
+ uint64_t value,
+ int is_persistent)
+{
+ static const char *s_sent = "# Bytes transmitted to other peers";
+ static const char *s_recv = "# Bytes received from other peers";
+
+ if (0 == strncmp (s_sent, name, strlen (s_sent)))
+ outgoing_bandwidth = outgoing_bandwidth + value;
+ else if (0 == strncmp(s_recv, name, strlen (s_recv)))
+ incoming_bandwidth = incoming_bandwidth + value;
+
+ return GNUNET_OK;
+}
+
+
static void
summarize ()
{
INFO ("# GETS made: %u\n", n_gets);
INFO ("# GETS succeeded: %u\n", n_gets_ok);
INFO ("# GETS failed: %u\n", n_gets_fail);
- GNUNET_SCHEDULER_shutdown ();
+ INFO ("# average_put_path_length: %f\n", average_put_path_length);
+ INFO ("# average_get_path_length: %f\n", average_get_path_length);
+
+ if (NULL == testbed_handles)
+ {
+ INFO ("No peers found\n");
+ return;
+ }
+ /* Collect Stats*/
+ bandwidth_stats_op = GNUNET_TESTBED_get_statistics (n_active, testbed_handles,
+ "dht", NULL,
+ bandwidth_stats_iterator,
+ bandwidth_stats_cont, NULL);
}
cancel_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct ActiveContext *ac = cls;
+ struct Context *ctx = ac->ctx;
ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
GNUNET_assert (NULL != ac->dht_get);
GNUNET_DHT_get_stop (ac->dht_get);
ac->dht_get = NULL;
n_gets_fail++;
+ GNUNET_assert (NULL != ctx->op);
+ GNUNET_TESTBED_operation_done (ctx->op);
+ ctx->op = NULL;
/* If profiling is complete, summarize */
- if (n_gets == n_gets_fail + n_gets_ok)
+ if (n_active == n_gets_fail + n_gets_ok)
summarize ();
+
}
{
struct ActiveContext *ac = cls;
struct ActiveContext *get_ac = ac->get_ac;
+ struct Context *ctx = ac->ctx;
/* Check the keys of put and get match or not. */
GNUNET_assert (0 == memcmp (key, &get_ac->hash, sizeof (struct GNUNET_HashCode)));
ac->dht_get = NULL;
GNUNET_SCHEDULER_cancel (ac->delay_task);
ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
-
+ GNUNET_assert (NULL != ctx->op);
+ GNUNET_TESTBED_operation_done (ctx->op);
+ ctx->op = NULL;
+
+ total_put_path_length = total_put_path_length + put_path_length;
+ total_get_path_length = total_get_path_length + get_path_length;
+
/* Summarize if profiling is complete */
if (n_active == n_gets_fail + n_gets_ok)
+ {
+ average_put_path_length = (double)total_put_path_length/(double)n_active;
+ average_get_path_length = (double)total_get_path_length/(double )n_active;
summarize ();
+ }
}
}
get_ac->nrefs++;
ac->get_ac = get_ac;
+ DEBUG ("Doing a DHT GET for data of size %u\n", get_ac->put_data_size);
ac->dht_get = GNUNET_DHT_get_start (ac->dht,
GNUNET_BLOCK_TYPE_TEST,
&get_ac->hash,
}
+/**
+ * Connect to DHT services of active peers
+ */
+static void
+start_profiling();
+
+
/**
* Queue up a delayed task for doing DHT GET
*
put_cont (void *cls, int success)
{
struct ActiveContext *ac = cls;
+ struct Context *ctx = ac->ctx;
+ struct GNUNET_TESTBED_Operation *op;
ac->dht_put = NULL;
if (success)
n_puts_ok++;
else
n_puts_fail++;
- ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay, &delayed_get, ac);
+ GNUNET_assert (NULL != ctx);
+ op = ctx->op;
+ ctx->op = NULL;
+ GNUNET_TESTBED_operation_done (op);
}
GNUNET_CRYPTO_hash (ac->put_data, ac->put_data_size, &ac->hash);
DEBUG ("Doing a DHT PUT with data of size %u\n", ac->put_data_size);
ac->dht_put = GNUNET_DHT_put (ac->dht, &ac->hash,
- 1, /* replication level */
+ replication,
GNUNET_DHT_RO_NONE,
GNUNET_BLOCK_TYPE_TEST,
ac->put_data_size,
struct ActiveContext *ac = cls;
struct Context *ctx = ac->ctx;
- GNUNET_assert (NULL != ctx);
+ GNUNET_assert (NULL != ctx); //FIXME: Fails
GNUNET_assert (NULL != ctx->op);
GNUNET_assert (ctx->op == op);
ac->dht = (struct GNUNET_DHT_Handle *) ca_result;
ctx->op = NULL;
return;
}
- ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay, &delayed_put, ac);
+ switch (mode)
+ {
+ case MODE_PUT:
+ ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay, &delayed_put, ac);
+ break;
+ case MODE_GET:
+ ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay, &delayed_get, ac);
+ break;
+ }
}
GNUNET_assert (NULL != ac->dht);
GNUNET_assert (ac->dht == op_result);
GNUNET_DHT_disconnect (ac->dht);
+ ac->dht = NULL;
n_dht--;
- if (0 == n_dht)
- GNUNET_SCHEDULER_shutdown ();
+ if (0 != n_dht)
+ return;
+ /* Start GETs if all PUTs have been made */
+ if (MODE_PUT == mode)
+ {
+ mode = MODE_GET;
+ start_profiling ();
+ return;
+ }
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * Connect to DHT services of active peers
+ */
+static void
+start_profiling()
+{
+ unsigned int i;
+ DEBUG("GNUNET_TESTBED_service_connect \n");
+ for(i = 0; i < n_active; i++)
+ {
+ struct ActiveContext *ac = &a_ac[i];
+ ac->ctx->op =
+ GNUNET_TESTBED_service_connect (ac->ctx,
+ ac->ctx->peer,
+ "dht",
+ &dht_connected, ac,
+ &dht_connect,
+ &dht_disconnect,
+ ac);
+ }
+}
+
+static unsigned int tries;
+
+/**
+ * Stats callback. Iterate over the hashmap and check if all th peers form
+ * a virtual ring topology.
+ *
+ * @param cls closure
+ * @param op the operation that has been finished
+ * @param emsg error message in case the operation has failed; will be NULL if
+ * operation has executed successfully.
+ */
+static void
+successor_stats_cont (void *cls,
+ struct GNUNET_TESTBED_Operation *op,
+ const char *emsg)
+{
+ struct GNUNET_HashCode *val;
+ struct GNUNET_HashCode *start_val;
+ struct GNUNET_HashCode *key;
+ int count;
+
+ /* Don't schedule the task till we are looking for circle here. */
+ successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_TESTBED_operation_done (successor_stats_op);
+ successor_stats_op = NULL;
+
+ start_val =
+ (struct GNUNET_HashCode *) GNUNET_CONTAINER_multihashmap_get(successor_peer_hashmap,
+ start_key);
+ val = GNUNET_new(struct GNUNET_HashCode);
+ key = GNUNET_new(struct GNUNET_HashCode);
+ val = start_val;
+ for (count = 0; count < num_peers; count++)
+ {
+ key = val;
+ val = GNUNET_CONTAINER_multihashmap_get (successor_peer_hashmap,
+ key);
+ GNUNET_assert(NULL != val);
+ /* Remove the entry from hashmap. This is done to take care of loop. */
+ if (GNUNET_NO ==
+ GNUNET_CONTAINER_multihashmap_remove (successor_peer_hashmap,
+ key, val))
+ {
+ DEBUG ("Failed to remove entry from hashmap\n");
+ break;
+ }
+ /* If a peer has its own identity as its successor. */
+ if (0 == memcmp(&key, &val, sizeof (struct GNUNET_HashCode)))
+ {
+ break;
+ }
+ }
+
+ if ((start_val == val) && (count == num_peers))
+ {
+ DEBUG("CIRCLE COMPLETED after %u tries", tries);
+ //FIXME: FREE HASHMAP.
+ if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
+ start_profiling();
+ return;
+ }
+ else
+ {
+ if (max_searches == ++tries)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Maximum tries %u exceeded while checking successor TOTAL TRIES %u"
+ " cirle formation. Exiting\n",
+ max_searches,tries);
+ //FIXME: FREE HASHMAP
+ if (GNUNET_SCHEDULER_NO_TASK != successor_stats_task)
+ {
+ successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
+ {
+ start_profiling();
+ }
+
+ return;
+ }
+
+ flag = 0;
+ successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay, &collect_stats, cls);
+ }
}
+/**
+ * Process successor statistic values.
+ *
+ * @param cls closure
+ * @param peer the peer the statistic belong to
+ * @param subsystem name of subsystem that created the statistic
+ * @param name the name of the datum
+ * @param value the current value
+ * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
+ * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
+ */
+static int
+successor_stats_iterator (void *cls,
+ const struct GNUNET_TESTBED_Peer *peer,
+ const char *subsystem,
+ const char *name,
+ uint64_t value,
+ int is_persistent)
+{
+ static const char *key_string = "XDHT";
+ if (0 == strncmp (key_string, name, strlen (key_string)))
+ {
+ char *my_id_str;
+ char successor_str[13];
+ char truncated_my_id_str[13];
+ char truncated_successor_str[13];
+ struct GNUNET_HashCode *my_id_key;
+ struct GNUNET_HashCode *succ_key;
+
+ strtok((char *)name,":");
+ my_id_str = strtok(NULL,":");
+
+ strncpy(truncated_my_id_str, my_id_str, 12);
+ truncated_my_id_str[12] = '\0';
+ my_id_key = GNUNET_new(struct GNUNET_HashCode);
+ GNUNET_CRYPTO_hash (truncated_my_id_str, sizeof(truncated_my_id_str),my_id_key);
+ GNUNET_STRINGS_data_to_string(&value, sizeof(uint64_t), successor_str, 13);
+ strncpy(truncated_successor_str, successor_str, 12);
+ truncated_successor_str[12] ='\0';
+
+ succ_key = GNUNET_new(struct GNUNET_HashCode);
+ GNUNET_CRYPTO_hash (truncated_successor_str, sizeof(truncated_successor_str),succ_key);
+
+ if (0 == flag)
+ {
+ start_key = my_id_key;
+ flag = 1;
+ }
+ /* FIXME: GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE do not free the value
+ which is replaced, need to free it. */
+ GNUNET_CONTAINER_multihashmap_put (successor_peer_hashmap,
+ my_id_key, (void *)succ_key,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
+ }
+ return GNUNET_OK;
+}
+
+
+/*
+ * Task that collects peer and its corresponding successors.
+ *
+ * @param cls Closure (NULL).
+ * @param tc Task Context.
+ */
+static void
+collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
+ return;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Start collecting statistics...\n");
+ GNUNET_assert(NULL != testbed_handles);
+ successor_stats_op =
+ GNUNET_TESTBED_get_statistics (num_peers, testbed_handles,
+ "dht", NULL,
+ successor_stats_iterator,
+ successor_stats_cont, cls);
+
+ GNUNET_assert(NULL != successor_stats_op);
+}
+
+
+#if ENABLE_MALICIOUS
+/**
+ * Set the malicious variable in peer malicious context.
+ */
+static void
+set_malicious()
+{
+ unsigned int i;
+ DEBUG ("Setting %u peers malicious");
+ for(i = 0; i < n_malicious; i++)
+ {
+ struct MaliciousContext *mc = &a_mc[i];
+ mc->ctx->op =
+ GNUNET_TESTBED_service_connect (ac->ctx,
+ ac->ctx->peer,
+ "dht",
+ &dht_set_malicious, mc,
+ &dht_connect,
+ &dht_finish,
+ mc);
+ }
+}
+#endif
/**
* Callback called when DHT service on the peer is started
*
GNUNET_assert (NULL != ctx);
GNUNET_assert (NULL != ctx->op);
GNUNET_TESTBED_operation_done (ctx->op);
- ctx->op = NULL;
- if (NULL == ctx->ac)
- return;
- /* FIXME: connect to the DHT service and wait before starting a PUT */
- ctx->op = GNUNET_TESTBED_service_connect (ctx, ctx->peer,
- "dht",
- &dht_connected, ctx->ac,
- &dht_connect,
- &dht_disconnect,
- ctx->ac);
+ peers_started++;
+ DEBUG("Peers Started = %d; num_peers = %d \n", peers_started, num_peers);
+ if (GNUNET_SCHEDULER_NO_TASK == successor_stats_task && peers_started == num_peers)
+ {
+#if ENABLE_MALICIOUS
+ set_malicious();
+#endif
+ DEBUG("successor_stats_task \n");
+ struct Collect_Stat_Context *collect_stat_cls = GNUNET_new(struct Collect_Stat_Context);
+ collect_stat_cls->service_connect_ctx = cls;
+ collect_stat_cls->op = op;
+ successor_peer_hashmap = GNUNET_CONTAINER_multihashmap_create (num_peers,
+ GNUNET_NO);
+ successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay,
+ &collect_stats,
+ collect_stat_cls);
+ }
}
{
unsigned int cnt;
unsigned int ac_cnt;
-
+
+ testbed_handles = peers;
if (NULL == peers)
{
/* exit */
GNUNET_free (a_ctx);
return;
}
+
+#if ENABLE_MALICIOUS
+
+ if(PUT_PROBABILITY + MALICIOUS_PEERS > 100)
+ {
+ DEBUG ("Reduce either number of malicious peer or active peers. ");
+ GNUNET_SCHEDULER_shutdown ();
+ GNUNET_free (a_ctx);
+ return;
+ }
+
+ /* Select the peers which should act maliciously. */
+ n_malicious = num_peers * MALICIOUS_PEERS / 100;
+
+ /* Select n_malicious peers and ensure that those are not active peers.
+ keep all malicious peer at one place, and call act malicious for all
+ those peers. */
+
+#endif
+
a_ac = GNUNET_malloc (n_active * sizeof (struct ActiveContext));
ac_cnt = 0;
for (cnt = 0; cnt < num_peers && ac_cnt < n_active; cnt++)
{'n', "peers", "COUNT",
gettext_noop ("number of peers to start"),
1, &GNUNET_GETOPT_set_uint, &num_peers},
+ {'s', "searches", "COUNT",
+ gettext_noop ("maximum number of times we try to search for successor circle formation (default is 1)"),
+ 1, &GNUNET_GETOPT_set_uint, &max_searches},
{'H', "hosts", "FILENAME",
gettext_noop ("name of the file with the login information for the testbed"),
1, &GNUNET_GETOPT_set_string, &hosts_file},
{'d', "delay", "DELAY",
gettext_noop ("delay for starting DHT PUT and GET"),
1, &GNUNET_GETOPT_set_relative_time, &delay},
+ {'r', "replication", "DEGREE",
+ gettext_noop ("replication degree for DHT PUTs"),
+ 1, &GNUNET_GETOPT_set_uint, &replication},
{'t', "timeout", "TIMEOUT",
gettext_noop ("timeout for DHT PUT and GET requests"),
1, &GNUNET_GETOPT_set_relative_time, &timeout},
GNUNET_GETOPT_OPTION_END
};
+ max_searches = 5;
if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
return 2;
- delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3); /* default delay */
- timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3); /* default timeout */
+ delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20); /* default delay */
+ timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 1); /* default timeout */
+ replication = 1; /* default replication */
rc = 0;
if (GNUNET_OK !=
GNUNET_PROGRAM_run (argc, argv, "dht-profiler",
projects / oweals / gnunet.git / blobdiff