From 7eef26030cb9b1e259b59d9f2d008b2e17b4b767 Mon Sep 17 00:00:00 2001 From: Bart Polot Date: Tue, 2 Aug 2011 23:25:32 +0000 Subject: [PATCH] Adapted nse-profiler for empty mesh multiple-peer test --- src/mesh/Makefile.am | 12 +- src/mesh/test_mesh_small.c | 654 ++++++++++++++++++++++++++++++++++ src/mesh/test_mesh_small.conf | 133 +++++++ 3 files changed, 798 insertions(+), 1 deletion(-) create mode 100644 src/mesh/test_mesh_small.c create mode 100644 src/mesh/test_mesh_small.conf diff --git a/src/mesh/Makefile.am b/src/mesh/Makefile.am index a2bed6060..70c0dc150 100644 --- a/src/mesh/Makefile.am +++ b/src/mesh/Makefile.am @@ -45,7 +45,8 @@ libgnunetmeshnew_la_LDFLAGS = \ -version-info 0:0:0 check_PROGRAMS = \ - test_mesh_api + test_mesh_api \ + test_mesh_small test_mesh_api_SOURCES = \ test_mesh_api.c @@ -56,6 +57,15 @@ test_mesh_api_LDADD = \ test_mesh_api_DEPENDENCIES = \ libgnunetmeshnew.la +test_mesh_small_SOURCES = \ + test_mesh_small.c +test_mesh_small_LDADD = \ + $(top_builddir)/src/mesh/libgnunetmeshnew.la \ + $(top_builddir)/src/util/libgnunetutil.la \ + $(top_builddir)/src/testing/libgnunettesting.la +test_mesh_small_DEPENDENCIES = \ + libgnunetmeshnew.la + if ENABLE_TEST_RUN TESTS = test_mesh_api endif diff --git a/src/mesh/test_mesh_small.c b/src/mesh/test_mesh_small.c new file mode 100644 index 000000000..3c0b2eb67 --- /dev/null +++ b/src/mesh/test_mesh_small.c @@ -0,0 +1,654 @@ +/* + This file is part of GNUnet. + (C) 2011 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 mesh/test_mesh_small.c + * + * @brief Test for the mesh service. + */ +#include "platform.h" +#include "gnunet_testing_lib.h" +#include "gnunet_mesh_service.h" + +#define VERBOSE GNUNET_NO + +struct MeshPeer +{ + struct MeshPeer *prev; + + struct MeshPeer *next; + + struct GNUNET_TESTING_Daemon *daemon; + + struct GNUNET_MESH_Handle *mesh_handle; +}; + + +struct StatsContext +{ + unsigned long long total_mesh_bytes; +}; + + +// static struct MeshPeer *peer_head; +// +// static struct MeshPeer *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 + */ +static 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; + +/** + * Maximum number of connections to NSE services. + */ +static unsigned long long connection_limit; + +/** + * 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; + +/** + * File to log connection info, statistics to. + */ +static struct GNUNET_DISK_FileHandle *data_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; + +static char *topology_file; + +static char *data_filename; + +/** + * Check whether peers successfully shut down. + */ +static 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); +// } + + if (data_file != NULL) + GNUNET_DISK_file_close(data_file); + GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL); +} + + +static void +connect_mesh_service (void *cls, + const struct GNUNET_SCHEDULER_TaskContext *tc) +{ +// struct NSEPeer *current_peer; + unsigned int i; + +#if VERBOSE + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Connecting to mesh service of peers\n"); +#endif + for (i = 0; i < num_peers; i++) + { + if ((connection_limit > 0) && (i % (num_peers / connection_limit) != 0)) + continue; +#if VERBOSE + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "test_mesh_small: connecting to mesh service of peer %d\n", i); +#endif +/* 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); + + +/** + * Continuation called by the "get_all" and "get" functions. + * + * @param cls struct StatsContext + * @param success GNUNET_OK if statistics were + * successfully obtained, GNUNET_SYSERR if not. + */ +static void +stats_finished_callback (void *cls, int success) +{ + struct StatsContext *stats_context = cls; + char *buf; + int buf_len; + + if ( (GNUNET_OK == success) && + (data_file != NULL) ) + { + /* Stats lookup successful, write out data */ + buf = NULL; + buf_len = GNUNET_asprintf(&buf, + "TOTAL_MESH_BYTES: %u\n", + stats_context->total_mesh_bytes); + if (buf_len > 0) + { + GNUNET_DISK_file_write(data_file, buf, buf_len); + } + GNUNET_free_non_null(buf); + } + + GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == shutdown_handle); + shutdown_handle = GNUNET_SCHEDULER_add_now(&shutdown_task, NULL); + GNUNET_free(stats_context); +} + + +/** + * Callback function to process statistic values. + * + * @param cls struct StatsContext + * @param peer the peer the statistics 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 +statistics_iterator (void *cls, + const struct GNUNET_PeerIdentity *peer, + const char *subsystem, + const char *name, + uint64_t value, + int is_persistent) +{ + struct StatsContext *stats_context = cls; +// +// if ( (0 == strstr(subsystem, "nse")) && +// (0 == strstr(name, "# flood messages received")) ) + stats_context->total_mesh_bytes += 1; //value; + return GNUNET_OK; +} + + +static void +disconnect_mesh_peers (void *cls, + const struct GNUNET_SCHEDULER_TaskContext *tc) +{ +// struct NSEPeer *pos; + char *buf; + struct StatsContext *stats_context; + + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "disconnecting mesh service of peers\n"); + disconnect_task = GNUNET_SCHEDULER_NO_TASK; +// pos = peer_head; +// while (NULL != (pos = peer_head)) +// { +// if (pos->nse_handle != NULL) +// { +// GNUNET_NSE_disconnect(pos->nse_handle); +// pos->nse_handle = NULL; +// } +// GNUNET_CONTAINER_DLL_remove(peer_head, peer_tail, pos); +// GNUNET_free(pos); +// } + + GNUNET_asprintf(&buf, + "round%llu", + current_round); + if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_number (testing_cfg, + "test_mesh_small", + 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! */ + { + stats_context = GNUNET_malloc(sizeof(struct StatsContext)); + GNUNET_SCHEDULER_cancel(shutdown_handle); + shutdown_handle = GNUNET_SCHEDULER_NO_TASK; + GNUNET_TESTING_get_statistics(pg, + &stats_finished_callback, + &statistics_iterator, + stats_context); + } + GNUNET_free(buf); +} + + +/** + * FIXME. + * + * @param cls unused + * @param emsg NULL on success + */ +static void +topology_output_callback (void *cls, const char *emsg) +{ + disconnect_task = GNUNET_SCHEDULER_add_delayed(wait_time, + &disconnect_mesh_peers, NULL); + GNUNET_SCHEDULER_add_now(&connect_mesh_service, NULL); +} + + +/** + * FIXME. + * + * @param cls closure + * @param emsg NULL on success + */ +static void +churn_callback (void *cls, const char *emsg) +{ + char *temp_output_file; + + if (emsg == NULL) /* Everything is okay! */ + { + peers_running = peers_next_round; + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "Round %llu, churn finished successfully.\n", + current_round); + GNUNET_assert(disconnect_task == GNUNET_SCHEDULER_NO_TASK); + GNUNET_asprintf(&temp_output_file, + "%s_%llu.dot", + topology_file, + current_round); + GNUNET_TESTING_peergroup_topology_to_file(pg, + temp_output_file, + &topology_output_callback, + NULL); + GNUNET_log(GNUNET_ERROR_TYPE_WARNING, + "Writing topology to file %s\n", + temp_output_file); + GNUNET_free(temp_output_file); + } + else + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "Round %llu, churn FAILED!!\n", + current_round); + GNUNET_SCHEDULER_cancel(shutdown_handle); + 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_mesh_service, NULL); + GNUNET_assert(disconnect_task == GNUNET_SCHEDULER_NO_TASK); + disconnect_task = GNUNET_SCHEDULER_add_delayed(wait_time, + &disconnect_mesh_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 we have!!\n"); + GNUNET_SCHEDULER_cancel(shutdown_handle); + GNUNET_SCHEDULER_add_now(&shutdown_task, NULL); + } + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "Round %llu, turning off %llu peers, turning on %llu 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, "nse", + (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) +{ + char *buf; + int buf_len; + 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!\n"); +#endif + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "Have %u connections\n", + total_connections); + if (data_file != NULL) + { + buf = NULL; + buf_len = GNUNET_asprintf(&buf, + "CONNECTIONS_0: %u\n", + total_connections); + if (buf_len > 0) + GNUNET_DISK_file_write(data_file, buf, buf_len); + GNUNET_free (buf); + } + peers_running = GNUNET_TESTING_daemons_running(pg); + + GNUNET_SCHEDULER_add_now(&connect_mesh_service, NULL); + disconnect_task = GNUNET_SCHEDULER_add_delayed(wait_time, &disconnect_mesh_peers, NULL); + +} + + +/** + * 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) + */ +static 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) +{ + 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; + struct GNUNET_TESTING_Host *hosts; + + ok = 1; + testing_cfg = (struct GNUNET_CONFIGURATION_Handle *)cfg; // GNUNET_CONFIGURATION_create(); +#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, + "test_mesh_small", + "wait_time", + &temp_wait)) + { + GNUNET_log(GNUNET_ERROR_TYPE_ERROR, + "Option nsetest_mesh_small:wait_time is required!\n"); + return; + } + + if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (testing_cfg, + "test_mesh_small", "connection_limit", + &connection_limit)) + { + connection_limit = 0; + } + + if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (testing_cfg, + "testing", "topology_output_file", + &topology_file)) + { + GNUNET_log(GNUNET_ERROR_TYPE_ERROR, + "Option test_mesh_small:topology_output_file is required!\n"); + return; + } + + if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (testing_cfg, + "test_mesh_small", "data_output_file", + &data_filename)) + { + GNUNET_log(GNUNET_ERROR_TYPE_ERROR, + "Option test_mesh_small:data_output_file is required!\n"); + return; + } + + data_file = GNUNET_DISK_file_open (data_filename, + GNUNET_DISK_OPEN_READWRITE + | GNUNET_DISK_OPEN_CREATE, + GNUNET_DISK_PERM_USER_READ | + GNUNET_DISK_PERM_USER_WRITE); + if (data_file == NULL) + GNUNET_log(GNUNET_ERROR_TYPE_WARNING, + "Failed to open %s for output!\n", + data_filename); + GNUNET_free(data_filename); + + wait_time = GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, temp_wait); + + if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string(cfg, + "test_mesh_small", + "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); + + hosts = GNUNET_TESTING_hosts_load (testing_cfg); + + pg = GNUNET_TESTING_peergroup_start(testing_cfg, + num_peers, + TIMEOUT, + &connect_cb, + &my_cb, NULL, + hosts); + GNUNET_assert (pg != NULL); + shutdown_handle = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_get_forever(), + &shutdown_task, + NULL); +} + + + +/** + * test_mesh_small 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[]) +{ + GNUNET_log_setup ("test_mesh_small", +#if VERBOSE + "DEBUG", +#else + "WARNING", +#endif + NULL); + GNUNET_PROGRAM_run (argc, + argv, "test_mesh_small", + gettext_noop ("Test mesh in a small network."), + options, + &run, NULL); +#if REMOVE_DIR + GNUNET_DISK_directory_remove ("/tmp/test_mesh_small"); +#endif + return ok; +} + +/* end of nse-profiler.c */ diff --git a/src/mesh/test_mesh_small.conf b/src/mesh/test_mesh_small.conf new file mode 100644 index 000000000..7c33c5652 --- /dev/null +++ b/src/mesh/test_mesh_small.conf @@ -0,0 +1,133 @@ +[PATHS] +SERVICEHOME = /tmp/test_mesh_small/ +DEFAULTCONFIG = test_mesh_small.conf + +[nse] +PORT = 0 +UNIXPATH = /tmp/test-nse-service-nse.unix +BINARY = gnunet-service-nse +#PREFIX = valgrind --leak-check=full --log-file=valgrind_nse.%p +AUTOSTART = YES +DEBUG = NO +CONFIG = $DEFAULTCONFIG +# Overriding network settings for faster testing (do NOT use +# these values in production just because they are here) +WORKDELAY = 10000 +INTERVAL = 3600000 +WORKBITS = 0 +PROOFFILE = $SERVICEHOME/nse.proof + +[arm] +PORT = 0 +DEFAULTSERVICES = core mesh +UNIXPATH = /tmp/test-nse-service-arm.unix +#DEBUG = YES + +[statistics] +AUTOSTART = YES +PORT = 0 + +[transport-https] +PORT = 0 + +[transport-http] +PORT = 0 + +[transport-udp] +PORT = 0 + +[transport-tcp] +ADVERTISED_PORT = 0 +PORT = 0 + +[gnunet-nat-server] +PORT = 0 + +[statistics] +AUTOSTART = YES +PORT = 0 + +[fs] +AUTOSTART = NO +PORT = 0 + +[datastore] +AUTOSTART = NO +PORT = 0 + +[dht] +AUTOSTART = NO +PORT = 0 + +[transport] +PORT = 0 +AUTOSTART = YES + +[nat] +DISABLEV6 = YES +BINDTO = 127.0.0.1 +ENABLE_UPNP = NO +BEHIND_NAT = NO +ALLOW_NAT = NO +INTERNAL_ADDRESS = 127.0.0.1 +EXTERNAL_ADDRESS = 127.0.0.1 + +[transport-unix] +PORT = 11111 + +[core] +AUTOSTART = YES +PORT = 0 + +[peerinfo] +AUTOSTART = YES +PORT = 0 + +[dns] +AUTOSTART = NO +PORT = 0 + +[resolver] +PORT = 0 + +[mesh] +PORT = 0 + +[topology] +PORT = 0 +AUTOSTART = NO + +[transport] +PORT = 0 +plugins = unix + +[testing] +NUM_PEERS = 16 +WEAKRANDOM = YES +TOPOLOGY = NONE +CONNECT_TOPOLOGY = RING +#CONNECT_TOPOLOGY = ERDOS_RENYI +#CONNECT_TOPOLOGY_OPTION = CONNECT_MINIMUM +#CONNECT_TOPOLOGY_OPTION_MODIFIER = 25 +#PERCENTAGE = 3 +#PROBABILITY = .1 +F2F = NO +CONNECT_TIMEOUT = 60 +CONNECT_ATTEMPTS = 3 +#DEBUG = YES +HOSTKEYSFILE = ../../contrib/testing_hostkeys.dat +MAX_CONCURRENT_SSH = 10 +USE_PROGRESSBARS = YES +PEERGROUP_TIMEOUT = 2400 +TOPOLOGY_OUTPUT_FILE = mesh_topo_initial +MAX_OUTSTANDING_CONNECTIONS = 75 +#SINGLE_PEERINFO_PER_HOST = YES +#NUM_PEERINFO_PER_HOST = 10 +#SINGLE_STATISTICS_PER_HOST = YES +#NUM_STATISTICS_PER_HOST = 10 +DELETE_FILES = YES + +[test_mesh_small] +WAIT_TIME = 10 +CONNECTION_LIMIT = 10 +DATA_OUTPUT_FILE=data_output \ No newline at end of file -- 2.25.1