--- /dev/null
+/*
+ This file is part of GNUnet.
+ (C) 2009 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file nse/nse-profiler.c
+ *
+ * @brief Profiling driver for the network size estimation service.
+ * Generally, the profiler starts a given number of peers,
+ * then churns some off, waits a certain amount of time, then
+ * churns again, and repeats.
+ */
+#include "platform.h"
+#include "gnunet_testing_lib.h"
+#include "gnunet_nse_service.h"
+
+#define VERBOSE GNUNET_NO
+
+struct NSEPeer
+{
+ struct NSEPeer *prev;
+
+ struct NSEPeer *next;
+
+ struct GNUNET_TESTING_Daemon *daemon;
+
+ struct GNUNET_NSE_Handle *nse_handle;
+};
+
+struct NSEPeer *peer_head;
+
+struct NSEPeer *peer_tail;
+
+/**
+ * How long until we give up on connecting the peers?
+ */
+#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1500)
+
+static int ok;
+
+/**
+ * Be verbose
+ */
+static int verbose;
+
+/**
+ * Total number of peers in the test.
+ */
+static unsigned long long num_peers;
+
+/**
+ * Global configuration file
+ */
+struct GNUNET_CONFIGURATION_Handle *testing_cfg;
+
+/**
+ * Total number of currently running peers.
+ */
+static unsigned long long peers_running;
+
+/**
+ * Current round we are in.
+ */
+static unsigned long long current_round;
+
+/**
+ * Peers desired in the next round.
+ */
+static unsigned long long peers_next_round;
+
+/**
+ * Total number of connections in the whole network.
+ */
+static unsigned int total_connections;
+
+/**
+ * The currently running peer group.
+ */
+static struct GNUNET_TESTING_PeerGroup *pg;
+
+/**
+ * File to report results to.
+ */
+static struct GNUNET_DISK_FileHandle *output_file;
+
+/**
+ * How many data points to capture before triggering next round?
+ */
+static struct GNUNET_TIME_Relative wait_time;
+
+/**
+ * Task called to disconnect peers.
+ */
+static GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
+
+/**
+ * Task called to shutdown test.
+ */
+static GNUNET_SCHEDULER_TaskIdentifier shutdown_handle;
+
+/**
+ * Task used to churn the network.
+ */
+static GNUNET_SCHEDULER_TaskIdentifier churn_task;
+
+/**
+ * Check whether peers successfully shut down.
+ */
+void
+shutdown_callback (void *cls, const char *emsg)
+{
+ if (emsg != NULL)
+ {
+#if VERBOSE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Shutdown of peers failed!\n");
+#endif
+ if (ok == 0)
+ ok = 666;
+ }
+ else
+ {
+#if VERBOSE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "All peers successfully shut down!\n");
+#endif
+ ok = 0;
+ }
+}
+
+static void
+shutdown_task (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct NSEPeer *pos;
+#if VERBOSE
+ fprintf(stderr, "Ending test.\n");
+#endif
+
+ if (disconnect_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel(disconnect_task);
+ disconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ while (NULL != (pos = peer_head))
+ {
+ if (pos->nse_handle != NULL)
+ GNUNET_NSE_disconnect(pos->nse_handle);
+ GNUNET_CONTAINER_DLL_remove(peer_head, peer_tail, pos);
+ GNUNET_free(pos);
+ }
+
+ GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
+}
+
+/**
+ * Callback to call when network size estimate is updated.
+ *
+ * @param cls closure
+ * @param estimate the value of the current network size estimate
+ * @param std_dev standard deviation (rounded down to nearest integer)
+ * of the size estimation values seen
+ *
+ */
+static void
+handle_estimate (void *cls, double estimate, double std_dev)
+{
+ struct NSEPeer *peer = cls;
+ char *output_buffer;
+ int size;
+ //fprintf(stderr, "Received network size estimate from peer %s. Size: %f std.dev. %f\n", GNUNET_i2s(&peer->daemon->id), estimate, std_dev);
+ if (output_file != NULL)
+ {
+ size = GNUNET_asprintf(&output_buffer, "%s %u %f %f\n", GNUNET_i2s(&peer->daemon->id), peers_running, estimate, std_dev);
+ if (size != GNUNET_DISK_file_write(output_file, output_buffer, size))
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s: Unable to write to file!\n", "nse-profiler");
+ }
+ else
+ fprintf(stderr, "Received network size estimate from peer %s. Size: %f std.dev. %f\n", GNUNET_i2s(&peer->daemon->id), estimate, std_dev);
+
+}
+
+
+static void
+connect_nse_service (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct NSEPeer *current_peer;
+ unsigned int i;
+#if VERBOSE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TEST_NSE_MULTIPEER: connecting to nse service of peers\n");
+#endif
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "TEST_NSE_MULTIPEER: connecting to nse service of peers\n");
+ for (i = 0; i < num_peers; i++)
+ {
+ current_peer = GNUNET_malloc(sizeof(struct NSEPeer));
+ current_peer->daemon = GNUNET_TESTING_daemon_get(pg, i);
+ if (GNUNET_YES == GNUNET_TESTING_daemon_running(GNUNET_TESTING_daemon_get(pg, i)))
+ {
+ current_peer->nse_handle = GNUNET_NSE_connect (current_peer->daemon->cfg, &handle_estimate, current_peer);
+ GNUNET_assert(current_peer->nse_handle != NULL);
+ }
+ GNUNET_CONTAINER_DLL_insert (peer_head, peer_tail, current_peer);
+ }
+}
+
+static void
+churn_peers (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+static void
+disconnect_nse_peers (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct NSEPeer *pos;
+ char *buf;
+ disconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ pos = peer_head;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "TEST_NSE_MULTIPEER: disconnecting nse service of peers\n");
+ while (pos != NULL)
+ {
+ if (pos->nse_handle != NULL)
+ {
+ GNUNET_NSE_disconnect(pos->nse_handle);
+ pos->nse_handle = NULL;
+ }
+ pos = pos->next;
+ }
+
+ GNUNET_asprintf(&buf, "round%llu", current_round);
+ if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (testing_cfg, "nse-profiler", buf, &peers_next_round))
+ {
+ current_round++;
+ GNUNET_assert(churn_task == GNUNET_SCHEDULER_NO_TASK);
+ churn_task = GNUNET_SCHEDULER_add_now(&churn_peers, NULL);
+ }
+ else /* No more rounds, let's shut it down! */
+ {
+ GNUNET_SCHEDULER_cancel(shutdown_handle);
+ shutdown_handle = GNUNET_SCHEDULER_add_now(&shutdown_task, NULL);
+ }
+ GNUNET_free(buf);
+}
+
+/**
+ * Prototype of a function that will be called when a
+ * particular operation was completed the testing library.
+ *
+ * @param cls closure
+ * @param emsg NULL on success
+ */
+static void
+churn_callback (void *cls, const char *emsg)
+{
+ if (emsg == NULL) /* Everything is okay! */
+ {
+ peers_running = GNUNET_TESTING_daemons_running(pg);
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Round %lu, churn finished successfully.\n", current_round);
+ GNUNET_assert(disconnect_task == GNUNET_SCHEDULER_NO_TASK);
+ disconnect_task = GNUNET_SCHEDULER_add_delayed(wait_time, &disconnect_nse_peers, NULL);
+ GNUNET_SCHEDULER_add_now(&connect_nse_service, NULL);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Round %lu, churn FAILED!!\n", current_round);
+ GNUNET_SCHEDULER_cancel(shutdown_handle);
+ GNUNET_SCHEDULER_add_now(&shutdown_task, NULL);
+ }
+}
+
+static void
+churn_peers (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ peers_running = GNUNET_TESTING_daemons_running(pg);
+ churn_task = GNUNET_SCHEDULER_NO_TASK;
+ if (peers_next_round == peers_running)
+ {
+ /* Nothing to do... */
+ GNUNET_SCHEDULER_add_now(&connect_nse_service, NULL);
+ GNUNET_assert(disconnect_task == GNUNET_SCHEDULER_NO_TASK);
+ disconnect_task = GNUNET_SCHEDULER_add_delayed(wait_time, &disconnect_nse_peers, NULL);
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Round %lu, doing nothing!\n", current_round);
+ }
+ else
+ {
+ if (peers_next_round > num_peers)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Asked to turn on more peers than have!!\n");
+ GNUNET_SCHEDULER_cancel(shutdown_handle);
+ GNUNET_SCHEDULER_add_now(&shutdown_task, NULL);
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Round %lu, turning off %lu peers, turning on %lu peers!\n",
+ current_round,
+ (peers_running > peers_next_round) ? peers_running
+ - peers_next_round : 0,
+ (peers_next_round > peers_running) ? peers_next_round
+ - peers_running : 0);
+ GNUNET_TESTING_daemons_churn (pg,
+ (peers_running > peers_next_round) ? peers_running
+ - peers_next_round
+ : 0,
+ (peers_next_round > peers_running) ? peers_next_round
+ - peers_running
+ : 0, wait_time, &churn_callback,
+ NULL);
+ }
+}
+
+
+
+static void
+my_cb (void *cls,
+ const char *emsg)
+{
+ if (emsg != NULL)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Peergroup callback called with error, aborting test!\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Error from testing: `%s'\n");
+ ok = 1;
+ GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
+ return;
+ }
+#if VERBOSE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer Group started successfully, connecting to NSE service for each peer!\n");
+#endif
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Have %u connections\n", total_connections);
+ peers_running = GNUNET_TESTING_daemons_running(pg);
+ GNUNET_SCHEDULER_add_now(&connect_nse_service, NULL);
+ disconnect_task = GNUNET_SCHEDULER_add_delayed(wait_time, &disconnect_nse_peers, NULL);
+}
+
+/**
+ * Prototype of a function that will be called whenever
+ * two daemons are connected by the testing library.
+ *
+ * @param cls closure
+ * @param first peer id for first daemon
+ * @param second peer id for the second daemon
+ * @param distance distance between the connected peers
+ * @param first_cfg config for the first daemon
+ * @param second_cfg config for the second daemon
+ * @param first_daemon handle for the first daemon
+ * @param second_daemon handle for the second daemon
+ * @param emsg error message (NULL on success)
+ */
+void connect_cb (void *cls,
+ const struct GNUNET_PeerIdentity *first,
+ const struct GNUNET_PeerIdentity *second,
+ uint32_t distance,
+ const struct GNUNET_CONFIGURATION_Handle *first_cfg,
+ const struct GNUNET_CONFIGURATION_Handle *second_cfg,
+ struct GNUNET_TESTING_Daemon *first_daemon,
+ struct GNUNET_TESTING_Daemon *second_daemon,
+ const char *emsg)
+{
+ char *second_id;
+
+ second_id = GNUNET_strdup(GNUNET_i2s(second));
+ if (emsg == NULL)
+ total_connections++;
+}
+
+
+static void
+run (void *cls,
+ char *const *args,
+ const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ char *temp_str;
+ unsigned long long temp_wait;
+ ok = 1;
+ testing_cfg = GNUNET_CONFIGURATION_create();
+ GNUNET_assert(GNUNET_OK == GNUNET_CONFIGURATION_load(testing_cfg, cfgfile));
+#if VERBOSE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting daemons.\n");
+ GNUNET_CONFIGURATION_set_value_string (testing_cfg, "testing",
+ "use_progressbars",
+ "YES");
+#endif
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (testing_cfg, "testing", "num_peers", &num_peers))
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Option TESTING:NUM_PEERS is required!\n");
+ return;
+ }
+
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (testing_cfg, "nse-profiler", "wait_time", &temp_wait))
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Option nse-profiler:wait_time is required!\n");
+ return;
+ }
+ wait_time = GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, temp_wait);
+
+ if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string(cfg, "nse-profiler", "output_file", &temp_str))
+ {
+ output_file = GNUNET_DISK_file_open (temp_str, GNUNET_DISK_OPEN_READWRITE
+ | GNUNET_DISK_OPEN_CREATE,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE);
+ if (output_file == NULL)
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to open %s for output!\n", temp_str);
+ }
+ GNUNET_free_non_null(temp_str);
+
+ pg = GNUNET_TESTING_peergroup_start(testing_cfg,
+ num_peers,
+ TIMEOUT,
+ &connect_cb,
+ &my_cb, NULL,
+ NULL);
+ GNUNET_assert (pg != NULL);
+ shutdown_handle = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_get_forever(), &shutdown_task, NULL);
+}
+
+
+
+/**
+ * nse-profiler command line options
+ */
+static struct GNUNET_GETOPT_CommandLineOption options[] = {
+ {'V', "verbose", NULL,
+ gettext_noop ("be verbose (print progress information)"),
+ 0, &GNUNET_GETOPT_set_one, &verbose},
+ GNUNET_GETOPT_OPTION_END
+};
+
+int
+main (int argc, char *argv[])
+{
+ int ret;
+
+ GNUNET_log_setup ("nse-profiler",
+#if VERBOSE
+ "DEBUG",
+#else
+ "WARNING",
+#endif
+ NULL);
+ ret = 1;
+ GNUNET_PROGRAM_run (argc,
+ argv, "nse-profiler", gettext_noop
+ ("Run a test of the NSE service."),
+ options, &run, &ok);
+
+ GNUNET_DISK_directory_remove ("/tmp/nse-profiler");
+ return ret;
+}
+
+/* end of nse-profiler.c */
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