2 * collectd-td - collectd traffic generator
3 * Copyright (C) 2010 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian Forster <ff at octo.it>
26 #ifndef _ISOC99_SOURCE
27 # define _ISOC99_SOURCE
30 #ifndef _POSIX_C_SOURCE
31 # define _POSIX_C_SOURCE 200809L
35 # define _XOPEN_SOURCE 700
39 # define __attribute__(x) /**/
50 #include "utils_heap.h"
52 #include "libcollectdclient/collectd/client.h"
53 #include "libcollectdclient/collectd/network.h"
54 #include "libcollectdclient/collectd/network_buffer.h"
56 #define DEF_NUM_HOSTS 1000
57 #define DEF_NUM_PLUGINS 20
58 #define DEF_NUM_VALUES 100000
60 static int conf_num_hosts = DEF_NUM_HOSTS;
61 static int conf_num_plugins = DEF_NUM_PLUGINS;
62 static int conf_num_values = DEF_NUM_VALUES;
63 static const char *conf_destination = NET_DEFAULT_V6_ADDR;
64 static const char *conf_service = NET_DEFAULT_PORT;
66 static lcc_network_t *net;
68 static c_heap_t *values_heap = NULL;
70 static struct sigaction sigint_action;
71 static struct sigaction sigterm_action;
73 static _Bool loop = 1;
75 __attribute__((noreturn))
76 static void exit_usage (int exit_status) /* {{{ */
78 fprintf ((exit_status == EXIT_FAILURE) ? stderr : stdout,
79 "collectd-tg -- collectd traffic generator\n"
81 " Usage: collectd-ng [OPTION]\n"
84 " -n <number> Number of value lists. (Default: %i)\n"
85 " -H <number> Number of hosts to emulate. (Default: %i)\n"
86 " -p <number> Number of plugins to emulate. (Default: %i)\n"
87 " -d <dest> Destination address of the network packets.\n"
89 " -D <port> Destination port of the network packets.\n"
91 " -h Print usage information (this output).\n"
93 "Copyright (C) 2010 Florian Forster\n"
94 "Licensed under the GNU General Public License, version 2 (GPLv2)\n",
95 DEF_NUM_VALUES, DEF_NUM_HOSTS, DEF_NUM_PLUGINS,
96 NET_DEFAULT_V6_ADDR, NET_DEFAULT_PORT);
98 } /* }}} void exit_usage */
100 static void signal_handler (int signal) /* {{{ */
103 } /* }}} void signal_handler */
105 static int compare_time (const void *v0, const void *v1) /* {{{ */
107 const lcc_value_list_t *vl0 = v0;
108 const lcc_value_list_t *vl1 = v1;
110 if (vl0->time < vl1->time)
112 else if (vl0->time > vl1->time)
116 } /* }}} int compare_time */
118 static int get_boundet_random (int min, int max) /* {{{ */
124 if (min == (max - 1))
129 return (min + ((int) (((double) range) * ((double) random ()) / (((double) RAND_MAX) + 1.0))));
130 } /* }}} int get_boundet_random */
132 static lcc_value_list_t *create_value_list (void) /* {{{ */
134 lcc_value_list_t *vl;
137 vl = malloc (sizeof (*vl));
140 fprintf (stderr, "malloc failed.\n");
143 memset (vl, 0, sizeof (*vl));
145 vl->values = calloc (/* nmemb = */ 1, sizeof (*vl->values));
146 if (vl->values == NULL)
148 fprintf (stderr, "calloc failed.\n");
153 vl->values_types = calloc (/* nmemb = */ 1, sizeof (*vl->values_types));
154 if (vl->values_types == NULL)
156 fprintf (stderr, "calloc failed.\n");
164 host_num = get_boundet_random (0, conf_num_hosts);
166 vl->interval = conf_interval;
167 vl->time = time (NULL) + (host_num % vl->interval) + 1;
169 if (get_boundet_random (0, 2) == 0)
170 vl->values_types[0] = LCC_TYPE_GAUGE;
172 vl->values_types[0] = LCC_TYPE_DERIVE;
174 snprintf (vl->identifier.host, sizeof (vl->identifier.host),
175 "host%04i", host_num);
176 snprintf (vl->identifier.plugin, sizeof (vl->identifier.plugin),
177 "plugin%03i", get_boundet_random (0, conf_num_plugins));
178 strncpy (vl->identifier.type,
179 (vl->values_types[0] == LCC_TYPE_GAUGE) ? "gauge" : "derive",
180 sizeof (vl->identifier.type));
181 snprintf (vl->identifier.type_instance, sizeof (vl->identifier.type_instance),
185 } /* }}} int create_value_list */
187 static void destroy_value_list (lcc_value_list_t *vl) /* {{{ */
193 free (vl->values_types);
195 } /* }}} void destroy_value_list */
197 static int send_value (lcc_value_list_t *vl) /* {{{ */
201 if (vl->values_types[0] == LCC_TYPE_GAUGE)
202 vl->values[0].gauge = 100.0 * ((gauge_t) random ()) / (((gauge_t) RAND_MAX) + 1.0);
204 vl->values[0].derive += get_boundet_random (0, 100);
206 status = lcc_network_values_send (net, vl);
208 fprintf (stderr, "lcc_network_values_send failed with status %i.\n", status);
210 vl->time += vl->interval;
213 } /* }}} int send_value */
215 static int get_integer_opt (const char *str, int *ret_value) /* {{{ */
222 tmp = (int) strtol (str, &endptr, /* base = */ 0);
225 fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n",
226 str, strerror (errno));
229 else if (endptr == str)
231 fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str);
234 else if (*endptr != 0)
236 fprintf (stderr, "Garbage after end of value: \"%s\"\n", str);
242 } /* }}} int get_integer_opt */
244 static int read_options (int argc, char **argv) /* {{{ */
248 while ((opt = getopt (argc, argv, "n:H:p:i:d:D:h")) != -1)
253 get_integer_opt (optarg, &conf_num_values);
257 get_integer_opt (optarg, &conf_num_hosts);
261 get_integer_opt (optarg, &conf_num_plugins);
265 conf_destination = optarg;
269 conf_service = optarg;
273 exit_usage (EXIT_SUCCESS);
276 exit_usage (EXIT_FAILURE);
278 } /* while (getopt) */
281 } /* }}} int read_options */
283 int main (int argc, char **argv) /* {{{ */
289 read_options (argc, argv);
291 sigint_action.sa_handler = signal_handler;
292 sigaction (SIGINT, &sigint_action, /* old = */ NULL);
294 sigterm_action.sa_handler = signal_handler;
295 sigaction (SIGTERM, &sigterm_action, /* old = */ NULL);
298 values_heap = c_heap_create (compare_time);
299 if (values_heap == NULL)
301 fprintf (stderr, "c_heap_create failed.\n");
305 net = lcc_network_create ();
308 fprintf (stderr, "lcc_network_create failed.\n");
315 srv = lcc_server_create (net, conf_destination, conf_service);
318 fprintf (stderr, "lcc_server_create failed.\n");
322 lcc_server_set_ttl (srv, 42);
324 lcc_server_set_security_level (srv, ENCRYPT,
325 "admin", "password1");
329 fprintf (stdout, "Creating %i values ... ", conf_num_values);
331 for (i = 0; i < conf_num_values; i++)
333 lcc_value_list_t *vl;
335 vl = create_value_list ();
338 fprintf (stderr, "create_value_list failed.\n");
342 c_heap_insert (values_heap, vl);
344 fprintf (stdout, "done\n");
349 lcc_value_list_t *vl = c_heap_get_root (values_heap);
354 if (vl->time != last_time)
356 printf ("%i values have been sent.\n", values_sent);
358 /* Check if we need to sleep */
359 time_t now = time (NULL);
361 while (now < vl->time)
364 struct timespec ts = { 0, 10000000 };
365 nanosleep (&ts, /* remaining = */ NULL);
371 last_time = vl->time;
377 c_heap_insert (values_heap, vl);
380 fprintf (stdout, "Shutting down.\n");
385 lcc_value_list_t *vl = c_heap_get_root (values_heap);
388 destroy_value_list (vl);
390 c_heap_destroy (values_heap);
392 lcc_network_destroy (net);
397 /* vim: set sw=2 sts=2 et fdm=marker : */