2 This file is part of GNUnet.
3 (C) 2011 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file mesh/gnunet-mesh-profiler.c
23 * @brief Profiler for mesh experiments.
27 #include "mesh_test_lib.h"
28 #include "gnunet_mesh_service.h"
29 #include "gnunet_statistics_service.h"
36 * How namy peers to run
38 #define TOTAL_PEERS 10
41 * Duration of each round.
43 #define ROUND_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
46 * Paximum ping period in milliseconds. Real period = rand (0, PING_PERIOD)
48 #define PING_PERIOD 2000
51 * How long until we give up on connecting the peers?
53 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 120)
56 * Time to wait for stuff that should be rather fast
58 #define SHORT_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
60 static float rounds[] = {0.8, 0.7, 0.6, 0.5, 0.0};
65 * Testbed Operation (to get peer id, etc).
67 struct GNUNET_TESTBED_Operation *op;
72 struct GNUNET_PeerIdentity id;
75 * Mesh handle for the root peer
77 struct GNUNET_MESH_Handle *mesh;
80 * Channel handle for the root peer
82 struct GNUNET_MESH_Channel *ch;
85 * Channel handle for the dest peer
87 struct GNUNET_MESH_Channel *incoming_ch;
90 * Number of payload packes sent
95 * Number of payload packets received
101 struct MeshPeer *dest;
102 struct MeshPeer *incoming;
103 GNUNET_SCHEDULER_TaskIdentifier ping_task;
104 struct GNUNET_TIME_Absolute timestamp;
108 * GNUNET_PeerIdentity -> MeshPeer
110 static struct GNUNET_CONTAINER_MultiPeerMap *ids;
113 * Testbed peer handles.
115 static struct GNUNET_TESTBED_Peer **testbed_handles;
118 * Testbed Operation (to get stats).
120 static struct GNUNET_TESTBED_Operation *stats_op;
123 * How many events have happened
128 * Number of events expected to conclude the test successfully.
133 * Size of each test packet
135 size_t size_payload = sizeof (struct GNUNET_MessageHeader) + sizeof (uint32_t);
138 * Operation to get peer ids.
140 struct MeshPeer peers[TOTAL_PEERS];
145 static unsigned int p_ids;
148 * Total number of currently running peers.
150 static unsigned long long peers_running;
153 * Test context (to shut down).
155 static struct GNUNET_MESH_TEST_Context *test_ctx;
158 * Task called to shutdown test.
160 static GNUNET_SCHEDULER_TaskIdentifier shutdown_handle;
163 * Task called to disconnect peers, before shutdown.
165 static GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
168 * Task to perform tests
170 static GNUNET_SCHEDULER_TaskIdentifier test_task;
174 * Flag to notify callbacks not to generate any new traffic anymore.
176 static int test_finished;
179 * Calculate a random delay.
181 * @param max Exclusive maximum, in ms.
183 * @return A time between 0 a max-1 ms.
185 static struct GNUNET_TIME_Relative
186 delay_ms_rnd (unsigned int max)
190 rnd = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, max);
191 return GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, rnd);
196 * Get the index of a peer in the peers array.
198 * @param peer Peer whose index to get.
200 * @return Index of peer in peers.
203 get_index (struct MeshPeer *peer)
210 * Show the results of the test (banwidth acheived) and log them to GAUGER
219 * Shut down peergroup, clean up.
221 * @param cls Closure (unused).
222 * @param tc Task Context.
225 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
227 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Ending test.\n");
228 shutdown_handle = GNUNET_SCHEDULER_NO_TASK;
233 * Disconnect from mesh services af all peers, call shutdown.
235 * @param cls Closure (unused).
236 * @param tc Task Context.
239 disconnect_mesh_peers (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
241 long line = (long) cls;
244 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
245 "disconnecting mesh service of peers, called from line %ld\n",
247 disconnect_task = GNUNET_SCHEDULER_NO_TASK;
248 for (i = 0; i < TOTAL_PEERS; i++)
250 GNUNET_TESTBED_operation_done (peers[i].op);
252 if (peers[i].up != GNUNET_YES)
255 GNUNET_MESH_channel_destroy (peers[i].ch);
256 if (NULL != peers[i].incoming_ch)
257 GNUNET_MESH_channel_destroy (peers[i].incoming_ch);
259 GNUNET_MESH_TEST_cleanup (test_ctx);
260 if (GNUNET_SCHEDULER_NO_TASK != shutdown_handle)
262 GNUNET_SCHEDULER_cancel (shutdown_handle);
264 shutdown_handle = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
269 * Finish test normally: schedule disconnect and shutdown
271 * @param line Line in the code the abort is requested from (__LINE__).
274 abort_test (long line)
276 if (disconnect_task != GNUNET_SCHEDULER_NO_TASK)
278 GNUNET_SCHEDULER_cancel (disconnect_task);
279 disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
285 * Stats callback. Finish the stats testbed operation and when all stats have
286 * been iterated, shutdown the test.
289 * @param op the operation that has been finished
290 * @param emsg error message in case the operation has failed; will be NULL if
291 * operation has executed successfully.
294 stats_cont (void *cls, struct GNUNET_TESTBED_Operation *op, const char *emsg)
296 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "... collecting statistics done.\n");
297 GNUNET_TESTBED_operation_done (stats_op);
299 if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
300 GNUNET_SCHEDULER_cancel (disconnect_task);
301 disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
308 * Process statistic values.
311 * @param peer the peer the statistic belong to
312 * @param subsystem name of subsystem that created the statistic
313 * @param name the name of the datum
314 * @param value the current value
315 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
316 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
319 stats_iterator (void *cls, const struct GNUNET_TESTBED_Peer *peer,
320 const char *subsystem, const char *name,
321 uint64_t value, int is_persistent)
325 i = GNUNET_TESTBED_get_index (peer);
326 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, " STATS %u - %s [%s]: %llu\n",
327 i, subsystem, name, value);
334 * Task check that keepalives were sent and received.
336 * @param cls Closure (NULL).
337 * @param tc Task Context.
340 collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
342 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
345 disconnect_task = GNUNET_SCHEDULER_NO_TASK;
346 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Start collecting statistics...\n");
347 stats_op = GNUNET_TESTBED_get_statistics (TOTAL_PEERS, testbed_handles,
349 stats_iterator, stats_cont, NULL);
354 * @brief Finish profiler normally. Signal finish and start collecting stats.
356 * @param cls Closure (unused).
357 * @param tc Task context.
360 finish_profiler (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
362 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
365 test_finished = GNUNET_YES;
367 GNUNET_SCHEDULER_add_now (&collect_stats, NULL);
371 * Set the total number of running peers.
373 * @param target Desired number of running peers.
376 adjust_running_peers (unsigned int target)
378 struct GNUNET_TESTBED_Operation *op;
384 GNUNET_assert (target <= TOTAL_PEERS);
386 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "adjust peers to %u\n", target);
387 if (target > peers_running)
389 delta = target - peers_running;
394 delta = peers_running - target;
398 for (i = 0; i < delta; i++)
401 r = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, TOTAL_PEERS);
402 } while (peers[r].up == run);
403 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "St%s peer %u: %s\n",
404 run ? "arting" : "opping", r, GNUNET_i2s (&peers[r].id));
406 if (GNUNET_SCHEDULER_NO_TASK != peers[r].ping_task)
407 GNUNET_SCHEDULER_cancel (peers[r].ping_task);
408 peers[r].ping_task = GNUNET_SCHEDULER_NO_TASK;
410 peers[r].up = GNUNET_NO;
411 op = GNUNET_TESTBED_peer_manage_service (&peers[r], testbed_handles[r],
412 "mesh", NULL, NULL, run);
413 GNUNET_break (NULL != op);
414 peers_running += run ? 1 : -1;
415 GNUNET_assert (peers_running > 0);
421 * @brief Move to next round.
423 * @param cls Closure (round #).
424 * @param tc Task context.
427 next_rnd (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
429 long round = (long) cls;
431 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
434 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "ROUND %ld\n", round);
435 if (0.0 == rounds[round])
437 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Finishing\n");
438 GNUNET_SCHEDULER_add_now (&finish_profiler, NULL);
441 adjust_running_peers (rounds[round] * TOTAL_PEERS);
443 GNUNET_SCHEDULER_add_delayed (ROUND_TIME, &next_rnd, (void *) (round + 1));
448 * Transmit ready callback.
450 * @param cls Closure (peer for PING, NULL for PONG).
451 * @param size Size of the tranmist buffer.
452 * @param buf Pointer to the beginning of the buffer.
454 * @return Number of bytes written to buf.
457 tmt_rdy (void *cls, size_t size, void *buf);
461 * @brief Send a ping to destination
463 * @param cls Closure (peer).
464 * @param tc Task context.
467 ping (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
469 struct MeshPeer *peer = (struct MeshPeer *) cls;
471 peer->ping_task = GNUNET_SCHEDULER_NO_TASK;
473 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0
474 || GNUNET_YES == test_finished
475 || 0 != peer->timestamp.abs_value_us)
478 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "%u -> %u\n",
479 get_index (peer), get_index (peer->dest));
481 GNUNET_MESH_notify_transmit_ready (peer->ch, GNUNET_NO,
482 GNUNET_TIME_UNIT_FOREVER_REL,
483 size_payload, &tmt_rdy, peer);
487 * @brief Reply with a pong to origin.
489 * @param cls Closure (peer).
490 * @param tc Task context.
493 pong (struct GNUNET_MESH_Channel *channel)
495 GNUNET_MESH_notify_transmit_ready (channel, GNUNET_NO,
496 GNUNET_TIME_UNIT_FOREVER_REL,
497 size_payload, &tmt_rdy, NULL);
502 * Transmit ready callback
504 * @param cls Closure (peer for PING, NULL for PONG).
505 * @param size Size of the buffer we have.
506 * @param buf Buffer to copy data to.
509 tmt_rdy (void *cls, size_t size, void *buf)
511 struct MeshPeer *peer = (struct MeshPeer *) cls;
512 struct GNUNET_MessageHeader *msg = buf;
515 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tmt_rdy called, filling buffer\n");
516 if (size < size_payload || NULL == buf)
519 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
520 "size %u, buf %p, data_sent %u, data_received %u\n",
521 size, buf, peer->data_sent, peer->data_received);
525 msg->size = htons (size);
528 msg->type = htons (PONG);
529 return sizeof (*msg);
532 msg->type = htons (PING);
533 data = (uint32_t *) &msg[1];
534 *data = htonl (peer->data_sent);
535 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sent: msg %d\n", peer->data_sent);
537 peer->timestamp = GNUNET_TIME_absolute_get ();
538 peer->ping_task = GNUNET_SCHEDULER_add_delayed (delay_ms_rnd (PING_PERIOD),
546 * Function is called whenever a PING message is received.
548 * @param cls closure (peer #, set from GNUNET_MESH_connect)
549 * @param channel connection to the other end
550 * @param channel_ctx place to store local state associated with the channel
551 * @param message the actual message
552 * @return GNUNET_OK to keep the connection open,
553 * GNUNET_SYSERR to close it (signal serious error)
556 ping_handler (void *cls, struct GNUNET_MESH_Channel *channel,
558 const struct GNUNET_MessageHeader *message)
562 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%u got PING\n", n);
563 GNUNET_MESH_receive_done (channel);
564 if (GNUNET_NO == test_finished)
572 * Function is called whenever a PONG message is received.
574 * @param cls closure (peer #, set from GNUNET_MESH_connect)
575 * @param channel connection to the other end
576 * @param channel_ctx place to store local state associated with the channel
577 * @param message the actual message
578 * @return GNUNET_OK to keep the connection open,
579 * GNUNET_SYSERR to close it (signal serious error)
582 pong_handler (void *cls, struct GNUNET_MESH_Channel *channel,
584 const struct GNUNET_MessageHeader *message)
587 struct MeshPeer *peer;
588 struct GNUNET_TIME_Relative latency;
590 GNUNET_MESH_receive_done (channel);
593 GNUNET_break (0 != peer->timestamp.abs_value_us);
594 latency = GNUNET_TIME_absolute_get_duration (peer->timestamp);
595 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "%u <- %u latency: %s\n",
596 get_index (peer), get_index (peer->dest),
597 GNUNET_STRINGS_relative_time_to_string (latency, GNUNET_NO));
599 if (GNUNET_SCHEDULER_NO_TASK == peer->ping_task)
601 peer->timestamp = GNUNET_TIME_absolute_get ();
602 peer->ping_task = GNUNET_SCHEDULER_add_delayed (delay_ms_rnd (60 * 1000),
607 peer->timestamp.abs_value_us = 0;
615 * Handlers, for diverse services
617 static struct GNUNET_MESH_MessageHandler handlers[] = {
618 {&ping_handler, PING, sizeof (struct GNUNET_MessageHeader)},
619 {&pong_handler, PONG, sizeof (struct GNUNET_MessageHeader)},
625 * Method called whenever another peer has added us to a channel
626 * the other peer initiated.
628 * @param cls Closure.
629 * @param channel New handle to the channel.
630 * @param initiator Peer that started the channel.
631 * @param port Port this channel is connected to.
632 * @param options channel option flags
633 * @return Initial channel context for the channel
634 * (can be NULL -- that's not an error).
637 incoming_channel (void *cls, struct GNUNET_MESH_Channel *channel,
638 const struct GNUNET_PeerIdentity *initiator,
639 uint32_t port, enum GNUNET_MESH_ChannelOption options)
642 struct MeshPeer *peer;
644 peer = GNUNET_CONTAINER_multipeermap_get (ids, initiator);
645 GNUNET_assert (NULL != peer);
646 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "%u <= %u %p\n",
647 n, get_index (peer), channel);
648 peers[n].incoming_ch = channel;
650 if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
652 GNUNET_SCHEDULER_cancel (disconnect_task);
653 disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
654 &disconnect_mesh_peers,
662 * Function called whenever an inbound channel is destroyed. Should clean up
663 * any associated state.
665 * @param cls closure (set from GNUNET_MESH_connect)
666 * @param channel connection to the other end (henceforth invalid)
667 * @param channel_ctx place where local state associated
668 * with the channel is stored
671 channel_cleaner (void *cls, const struct GNUNET_MESH_Channel *channel,
675 struct MeshPeer *peer = &peers[n];
677 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
678 "Incoming channel %p disconnected at peer %ld\n", channel, n);
679 if (peer->ch == channel)
684 static struct MeshPeer *
685 select_random_peer (struct MeshPeer *peer)
691 r = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, TOTAL_PEERS);
692 } while (NULL != peers[r].incoming);
693 peers[r].incoming = peer;
699 * START THE TEST ITSELF, AS WE ARE CONNECTED TO THE MESH SERVICES.
701 * Testcase continues when the root receives confirmation of connected peers,
702 * on callback funtion ch.
704 * @param cls Closure (unsued).
705 * @param tc Task Context.
708 start_test (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
710 enum GNUNET_MESH_ChannelOption flags;
713 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
716 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Start profiler\n");
718 if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
719 GNUNET_SCHEDULER_cancel (disconnect_task);
720 disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
721 &disconnect_mesh_peers,
724 flags = GNUNET_MESH_OPTION_DEFAULT;
725 for (i = 0; i < TOTAL_PEERS; i++)
728 peers[i].dest = select_random_peer (&peers[i]);
729 peers[i].ch = GNUNET_MESH_channel_create (peers[i].mesh, NULL,
732 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "%u => %u %p\n",
733 i, get_index (peers[i].dest), peers[i].ch);
734 peers[i].ping_task = GNUNET_SCHEDULER_add_delayed (delay_ms_rnd (2000),
737 peers_running = TOTAL_PEERS;
738 GNUNET_SCHEDULER_add_delayed (ROUND_TIME, &next_rnd, NULL);
743 * Callback to be called when the requested peer information is available
745 * @param cls the closure from GNUNET_TESTBED_peer_get_information()
746 * @param op the operation this callback corresponds to
747 * @param pinfo the result; will be NULL if the operation has failed
748 * @param emsg error message if the operation has failed;
749 * NULL if the operation is successfull
752 peer_id_cb (void *cls,
753 struct GNUNET_TESTBED_Operation *op,
754 const struct GNUNET_TESTBED_PeerInformation *pinfo,
759 if (NULL == pinfo || NULL != emsg)
761 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "pi_cb: %s\n", emsg);
762 abort_test (__LINE__);
765 peers[n].id = *(pinfo->result.id);
766 GNUNET_log (GNUNET_ERROR_TYPE_INFO, " %u id: %s\n",
767 n, GNUNET_i2s (&peers[n].id));
768 GNUNET_break (GNUNET_OK ==
769 GNUNET_CONTAINER_multipeermap_put (ids, &peers[n].id, &peers[n],
770 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST));
772 if (p_ids < TOTAL_PEERS)
774 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Got all IDs, starting profiler\n");
775 test_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
780 * test main: start test when all peers are connected
782 * @param cls Closure.
783 * @param ctx Argument to give to GNUNET_MESH_TEST_cleanup on test end.
784 * @param num_peers Number of peers that are running.
785 * @param testbed_peers Array of peers.
786 * @param meshes Handle to each of the MESHs of the peers.
790 struct GNUNET_MESH_TEST_Context *ctx,
791 unsigned int num_peers,
792 struct GNUNET_TESTBED_Peer **testbed_peers,
793 struct GNUNET_MESH_Handle **meshes)
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test main\n");
800 GNUNET_assert (TOTAL_PEERS == num_peers);
801 peers_running = num_peers;
802 testbed_handles = testbed_peers;
803 disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
804 &disconnect_mesh_peers,
806 shutdown_handle = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
807 &shutdown_task, NULL);
808 for (i = 0; i < TOTAL_PEERS; i++)
810 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "requesting id %ld\n", i);
811 peers[i].up = GNUNET_YES;
812 peers[i].mesh = meshes[i];
814 GNUNET_TESTBED_peer_get_information (testbed_handles[i],
815 GNUNET_TESTBED_PIT_IDENTITY,
816 &peer_id_cb, (void *) i);
818 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "requested peer ids\n");
819 /* Continues from pi_cb -> do_test */
824 * Main: start profiler.
827 main (int argc, char *argv[])
829 static uint32_t ports[2];
830 const char *config_file;
832 config_file = "test_mesh.conf";
834 ids = GNUNET_CONTAINER_multipeermap_create (2 * TOTAL_PEERS, GNUNET_YES);
835 GNUNET_assert (NULL != ids);
837 test_finished = GNUNET_NO;
840 GNUNET_MESH_TEST_run ("mesh-profiler", config_file, TOTAL_PEERS,
841 &tmain, NULL, /* tmain cls */
842 &incoming_channel, &channel_cleaner,
847 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
848 "FAILED! (%d/%d)\n", ok, ok_goal);
851 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "success\n");
855 /* end of gnunet-mesh-profiler.c */