1 /**
2 * collectd-tg - src/collectd-tg.c
3 * Copyright (C) 2010-2012 Florian octo Forster
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Florian Forster <octo at collectd.org>
25 **/
27 #if HAVE_CONFIG_H
28 # include "config.h"
29 #endif
31 #if !__GNUC__
32 # define __attribute__(x) /**/
33 #endif
35 #include <stdlib.h>
36 #include <unistd.h>
37 #include <stdio.h>
38 #include <string.h>
39 #include <time.h>
40 #include <signal.h>
41 #include <errno.h>
42 #include <math.h>
44 #include "utils_heap.h"
46 #include "libcollectdclient/collectd/client.h"
47 #include "libcollectdclient/collectd/network.h"
48 #include "libcollectdclient/collectd/network_buffer.h"
50 #define DEF_NUM_HOSTS 1000
51 #define DEF_NUM_PLUGINS 20
52 #define DEF_NUM_VALUES 100000
53 #define DEF_INTERVAL 10.0
55 static int conf_num_hosts = DEF_NUM_HOSTS;
56 static int conf_num_plugins = DEF_NUM_PLUGINS;
57 static int conf_num_values = DEF_NUM_VALUES;
58 static double conf_interval = DEF_INTERVAL;
59 static const char *conf_destination = NET_DEFAULT_V6_ADDR;
60 static const char *conf_service = NET_DEFAULT_PORT;
62 static lcc_network_t *net;
64 static c_heap_t *values_heap = NULL;
66 static struct sigaction sigint_action;
67 static struct sigaction sigterm_action;
69 static _Bool loop = 1;
71 __attribute__((noreturn))
72 static void exit_usage (int exit_status) /* {{{ */
73 {
74 fprintf ((exit_status == EXIT_FAILURE) ? stderr : stdout,
75 "collectd-tg -- collectd traffic generator\n"
76 "\n"
77 " Usage: collectd-ng [OPTION]\n"
78 "\n"
79 " Valid options:\n"
80 " -n <number> Number of value lists. (Default: %i)\n"
81 " -H <number> Number of hosts to emulate. (Default: %i)\n"
82 " -p <number> Number of plugins to emulate. (Default: %i)\n"
83 " -i <seconds> Interval of each value in seconds. (Default: %.3f)\n"
84 " -d <dest> Destination address of the network packets.\n"
85 " (Default: %s)\n"
86 " -D <port> Destination port of the network packets.\n"
87 " (Default: %s)\n"
88 " -h Print usage information (this output).\n"
89 "\n"
90 "Copyright (C) 2010-2012 Florian Forster\n"
91 "Licensed under the MIT license.\n",
92 DEF_NUM_VALUES, DEF_NUM_HOSTS, DEF_NUM_PLUGINS,
93 DEF_INTERVAL,
94 NET_DEFAULT_V6_ADDR, NET_DEFAULT_PORT);
95 exit (exit_status);
96 } /* }}} void exit_usage */
98 static void signal_handler (int signal) /* {{{ */
99 {
100 loop = 0;
101 } /* }}} void signal_handler */
103 static double dtime (void) /* {{{ */
104 {
105 struct timespec ts = { 0 };
107 if (clock_gettime (CLOCK_MONOTONIC, &ts) != 0)
108 perror ("clock_gettime");
110 return ((double) ts.tv_sec) + (((double) ts.tv_nsec) / 1e9);
111 } /* }}} double dtime */
113 static int compare_time (const void *v0, const void *v1) /* {{{ */
114 {
115 const lcc_value_list_t *vl0 = v0;
116 const lcc_value_list_t *vl1 = v1;
118 if (vl0->time < vl1->time)
119 return (-1);
120 else if (vl0->time > vl1->time)
121 return (1);
122 else
123 return (0);
124 } /* }}} int compare_time */
126 static int get_boundet_random (int min, int max) /* {{{ */
127 {
128 int range;
130 if (min >= max)
131 return (-1);
132 if (min == (max - 1))
133 return (min);
135 range = max - min;
137 return (min + ((int) (((double) range) * ((double) random ()) / (((double) RAND_MAX) + 1.0))));
138 } /* }}} int get_boundet_random */
140 static lcc_value_list_t *create_value_list (void) /* {{{ */
141 {
142 lcc_value_list_t *vl;
143 int host_num;
145 vl = malloc (sizeof (*vl));
146 if (vl == NULL)
147 {
148 fprintf (stderr, "malloc failed.\n");
149 return (NULL);
150 }
151 memset (vl, 0, sizeof (*vl));
153 vl->values = calloc (/* nmemb = */ 1, sizeof (*vl->values));
154 if (vl->values == NULL)
155 {
156 fprintf (stderr, "calloc failed.\n");
157 free (vl);
158 return (NULL);
159 }
161 vl->values_types = calloc (/* nmemb = */ 1, sizeof (*vl->values_types));
162 if (vl->values_types == NULL)
163 {
164 fprintf (stderr, "calloc failed.\n");
165 free (vl->values);
166 free (vl);
167 return (NULL);
168 }
170 vl->values_len = 1;
172 host_num = get_boundet_random (0, conf_num_hosts);
174 vl->interval = conf_interval;
175 vl->time = 1.0 + dtime ()
176 + (host_num % (1 + (int) vl->interval));
178 if (get_boundet_random (0, 2) == 0)
179 vl->values_types[0] = LCC_TYPE_GAUGE;
180 else
181 vl->values_types[0] = LCC_TYPE_DERIVE;
183 snprintf (vl->identifier.host, sizeof (vl->identifier.host),
184 "host%04i", host_num);
185 snprintf (vl->identifier.plugin, sizeof (vl->identifier.plugin),
186 "plugin%03i", get_boundet_random (0, conf_num_plugins));
187 strncpy (vl->identifier.type,
188 (vl->values_types[0] == LCC_TYPE_GAUGE) ? "gauge" : "derive",
189 sizeof (vl->identifier.type));
190 snprintf (vl->identifier.type_instance, sizeof (vl->identifier.type_instance),
191 "ti%li", random ());
193 return (vl);
194 } /* }}} int create_value_list */
196 static void destroy_value_list (lcc_value_list_t *vl) /* {{{ */
197 {
198 if (vl == NULL)
199 return;
201 free (vl->values);
202 free (vl->values_types);
203 free (vl);
204 } /* }}} void destroy_value_list */
206 static int send_value (lcc_value_list_t *vl) /* {{{ */
207 {
208 int status;
210 if (vl->values_types[0] == LCC_TYPE_GAUGE)
211 vl->values[0].gauge = 100.0 * ((gauge_t) random ()) / (((gauge_t) RAND_MAX) + 1.0);
212 else
213 vl->values[0].derive += (derive_t) get_boundet_random (0, 100);
215 status = lcc_network_values_send (net, vl);
216 if (status != 0)
217 fprintf (stderr, "lcc_network_values_send failed with status %i.\n", status);
219 vl->time += vl->interval;
221 return (0);
222 } /* }}} int send_value */
224 static int get_integer_opt (const char *str, int *ret_value) /* {{{ */
225 {
226 char *endptr;
227 int tmp;
229 errno = 0;
230 endptr = NULL;
231 tmp = (int) strtol (str, &endptr, /* base = */ 0);
232 if (errno != 0)
233 {
234 fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n",
235 str, strerror (errno));
236 exit (EXIT_FAILURE);
237 }
238 else if (endptr == str)
239 {
240 fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str);
241 exit (EXIT_FAILURE);
242 }
243 else if (*endptr != 0)
244 {
245 fprintf (stderr, "Garbage after end of value: \"%s\"\n", str);
246 exit (EXIT_FAILURE);
247 }
249 *ret_value = tmp;
250 return (0);
251 } /* }}} int get_integer_opt */
253 static int get_double_opt (const char *str, double *ret_value) /* {{{ */
254 {
255 char *endptr;
256 double tmp;
258 errno = 0;
259 endptr = NULL;
260 tmp = strtod (str, &endptr);
261 if (errno != 0)
262 {
263 fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n",
264 str, strerror (errno));
265 exit (EXIT_FAILURE);
266 }
267 else if (endptr == str)
268 {
269 fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str);
270 exit (EXIT_FAILURE);
271 }
272 else if (*endptr != 0)
273 {
274 fprintf (stderr, "Garbage after end of value: \"%s\"\n", str);
275 exit (EXIT_FAILURE);
276 }
278 *ret_value = tmp;
279 return (0);
280 } /* }}} int get_double_opt */
282 static int read_options (int argc, char **argv) /* {{{ */
283 {
284 int opt;
286 while ((opt = getopt (argc, argv, "n:H:p:i:d:D:h")) != -1)
287 {
288 switch (opt)
289 {
290 case 'n':
291 get_integer_opt (optarg, &conf_num_values);
292 break;
294 case 'H':
295 get_integer_opt (optarg, &conf_num_hosts);
296 break;
298 case 'p':
299 get_integer_opt (optarg, &conf_num_plugins);
300 break;
302 case 'i':
303 get_double_opt (optarg, &conf_interval);
304 break;
306 case 'd':
307 conf_destination = optarg;
308 break;
310 case 'D':
311 conf_service = optarg;
312 break;
314 case 'h':
315 exit_usage (EXIT_SUCCESS);
317 default:
318 exit_usage (EXIT_FAILURE);
319 } /* switch (opt) */
320 } /* while (getopt) */
322 return (0);
323 } /* }}} int read_options */
325 int main (int argc, char **argv) /* {{{ */
326 {
327 int i;
328 double last_time;
329 int values_sent = 0;
331 read_options (argc, argv);
333 sigint_action.sa_handler = signal_handler;
334 sigaction (SIGINT, &sigint_action, /* old = */ NULL);
336 sigterm_action.sa_handler = signal_handler;
337 sigaction (SIGTERM, &sigterm_action, /* old = */ NULL);
340 values_heap = c_heap_create (compare_time);
341 if (values_heap == NULL)
342 {
343 fprintf (stderr, "c_heap_create failed.\n");
344 exit (EXIT_FAILURE);
345 }
347 net = lcc_network_create ();
348 if (net == NULL)
349 {
350 fprintf (stderr, "lcc_network_create failed.\n");
351 exit (EXIT_FAILURE);
352 }
353 else
354 {
355 lcc_server_t *srv;
357 srv = lcc_server_create (net, conf_destination, conf_service);
358 if (srv == NULL)
359 {
360 fprintf (stderr, "lcc_server_create failed.\n");
361 exit (EXIT_FAILURE);
362 }
364 lcc_server_set_ttl (srv, 42);
365 #if 0
366 lcc_server_set_security_level (srv, ENCRYPT,
367 "admin", "password1");
368 #endif
369 }
371 fprintf (stdout, "Creating %i values ... ", conf_num_values);
372 fflush (stdout);
373 for (i = 0; i < conf_num_values; i++)
374 {
375 lcc_value_list_t *vl;
377 vl = create_value_list ();
378 if (vl == NULL)
379 {
380 fprintf (stderr, "create_value_list failed.\n");
381 exit (EXIT_FAILURE);
382 }
384 c_heap_insert (values_heap, vl);
385 }
386 fprintf (stdout, "done\n");
388 last_time = 0;
389 while (loop)
390 {
391 lcc_value_list_t *vl = c_heap_get_root (values_heap);
393 if (vl == NULL)
394 break;
396 if (vl->time != last_time)
397 {
398 printf ("%i values have been sent.\n", values_sent);
400 /* Check if we need to sleep */
401 double now = dtime ();
403 while (now < vl->time)
404 {
405 /* 1 / 100 second */
406 struct timespec ts = { 0, 10000000 };
408 ts.tv_sec = (time_t) now;
409 ts.tv_nsec = (long) ((now - ((double) ts.tv_sec)) * 1e9);
411 nanosleep (&ts, /* remaining = */ NULL);
412 now = dtime ();
414 if (!loop)
415 break;
416 }
417 last_time = vl->time;
418 }
420 send_value (vl);
421 values_sent++;
423 c_heap_insert (values_heap, vl);
424 }
426 fprintf (stdout, "Shutting down.\n");
427 fflush (stdout);
429 while (42)
430 {
431 lcc_value_list_t *vl = c_heap_get_root (values_heap);
432 if (vl == NULL)
433 break;
434 destroy_value_list (vl);
435 }
436 c_heap_destroy (values_heap);
438 lcc_network_destroy (net);
439 exit (EXIT_SUCCESS);
440 return (0);
441 } /* }}} int main */
443 /* vim: set sw=2 sts=2 et fdm=marker : */