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>
43 #include <sys/time.h>
45 #include "utils_heap.h"
47 #include "libcollectdclient/collectd/client.h"
48 #include "libcollectdclient/collectd/network.h"
49 #include "libcollectdclient/collectd/network_buffer.h"
51 #define DEF_NUM_HOSTS 1000
52 #define DEF_NUM_PLUGINS 20
53 #define DEF_NUM_VALUES 100000
54 #define DEF_INTERVAL 10.0
56 static int conf_num_hosts = DEF_NUM_HOSTS;
57 static int conf_num_plugins = DEF_NUM_PLUGINS;
58 static int conf_num_values = DEF_NUM_VALUES;
59 static double conf_interval = DEF_INTERVAL;
60 static const char *conf_destination = NET_DEFAULT_V6_ADDR;
61 static const char *conf_service = NET_DEFAULT_PORT;
63 static lcc_network_t *net;
65 static c_heap_t *values_heap = NULL;
67 static struct sigaction sigint_action;
68 static struct sigaction sigterm_action;
70 static _Bool loop = 1;
72 __attribute__((noreturn))
73 static void exit_usage (int exit_status) /* {{{ */
74 {
75 fprintf ((exit_status == EXIT_FAILURE) ? stderr : stdout,
76 "collectd-tg -- collectd traffic generator\n"
77 "\n"
78 " Usage: collectd-ng [OPTION]\n"
79 "\n"
80 " Valid options:\n"
81 " -n <number> Number of value lists. (Default: %i)\n"
82 " -H <number> Number of hosts to emulate. (Default: %i)\n"
83 " -p <number> Number of plugins to emulate. (Default: %i)\n"
84 " -i <seconds> Interval of each value in seconds. (Default: %.3f)\n"
85 " -d <dest> Destination address of the network packets.\n"
86 " (Default: %s)\n"
87 " -D <port> Destination port of the network packets.\n"
88 " (Default: %s)\n"
89 " -h Print usage information (this output).\n"
90 "\n"
91 "Copyright (C) 2010-2012 Florian Forster\n"
92 "Licensed under the MIT license.\n",
93 DEF_NUM_VALUES, DEF_NUM_HOSTS, DEF_NUM_PLUGINS,
94 DEF_INTERVAL,
95 NET_DEFAULT_V6_ADDR, NET_DEFAULT_PORT);
96 exit (exit_status);
97 } /* }}} void exit_usage */
99 static void signal_handler (int signal) /* {{{ */
100 {
101 loop = 0;
102 } /* }}} void signal_handler */
104 #if HAVE_CLOCK_GETTIME
105 static double dtime (void) /* {{{ */
106 {
107 struct timespec ts = { 0 };
109 if (clock_gettime (CLOCK_MONOTONIC, &ts) != 0)
110 perror ("clock_gettime");
112 return ((double) ts.tv_sec) + (((double) ts.tv_nsec) / 1e9);
113 } /* }}} double dtime */
114 #else
115 /* Work around for Mac OS X which doesn't have clock_gettime(2). *sigh* */
116 static double dtime (void) /* {{{ */
117 {
118 struct timeval tv = { 0 };
120 if (gettimeofday (&tv, /* timezone = */ NULL) != 0)
121 perror ("gettimeofday");
123 return ((double) tv.tv_sec) + (((double) tv.tv_usec) / 1e6);
124 } /* }}} double dtime */
125 #endif
127 static int compare_time (const void *v0, const void *v1) /* {{{ */
128 {
129 const lcc_value_list_t *vl0 = v0;
130 const lcc_value_list_t *vl1 = v1;
132 if (vl0->time < vl1->time)
133 return (-1);
134 else if (vl0->time > vl1->time)
135 return (1);
136 else
137 return (0);
138 } /* }}} int compare_time */
140 static int get_boundet_random (int min, int max) /* {{{ */
141 {
142 int range;
144 if (min >= max)
145 return (-1);
146 if (min == (max - 1))
147 return (min);
149 range = max - min;
151 return (min + ((int) (((double) range) * ((double) random ()) / (((double) RAND_MAX) + 1.0))));
152 } /* }}} int get_boundet_random */
154 static lcc_value_list_t *create_value_list (void) /* {{{ */
155 {
156 lcc_value_list_t *vl;
157 int host_num;
159 vl = calloc (1, sizeof (*vl));
160 if (vl == NULL)
161 {
162 fprintf (stderr, "calloc failed.\n");
163 return (NULL);
164 }
166 vl->values = calloc (/* nmemb = */ 1, sizeof (*vl->values));
167 if (vl->values == NULL)
168 {
169 fprintf (stderr, "calloc failed.\n");
170 free (vl);
171 return (NULL);
172 }
174 vl->values_types = calloc (/* nmemb = */ 1, sizeof (*vl->values_types));
175 if (vl->values_types == NULL)
176 {
177 fprintf (stderr, "calloc failed.\n");
178 free (vl->values);
179 free (vl);
180 return (NULL);
181 }
183 vl->values_len = 1;
185 host_num = get_boundet_random (0, conf_num_hosts);
187 vl->interval = conf_interval;
188 vl->time = 1.0 + dtime ()
189 + (host_num % (1 + (int) vl->interval));
191 if (get_boundet_random (0, 2) == 0)
192 vl->values_types[0] = LCC_TYPE_GAUGE;
193 else
194 vl->values_types[0] = LCC_TYPE_DERIVE;
196 snprintf (vl->identifier.host, sizeof (vl->identifier.host),
197 "host%04i", host_num);
198 snprintf (vl->identifier.plugin, sizeof (vl->identifier.plugin),
199 "plugin%03i", get_boundet_random (0, conf_num_plugins));
200 strncpy (vl->identifier.type,
201 (vl->values_types[0] == LCC_TYPE_GAUGE) ? "gauge" : "derive",
202 sizeof (vl->identifier.type));
203 vl->identifier.type[sizeof (vl->identifier.type) - 1] = 0;
204 snprintf (vl->identifier.type_instance, sizeof (vl->identifier.type_instance),
205 "ti%li", random ());
207 return (vl);
208 } /* }}} int create_value_list */
210 static void destroy_value_list (lcc_value_list_t *vl) /* {{{ */
211 {
212 if (vl == NULL)
213 return;
215 free (vl->values);
216 free (vl->values_types);
217 free (vl);
218 } /* }}} void destroy_value_list */
220 static int send_value (lcc_value_list_t *vl) /* {{{ */
221 {
222 int status;
224 if (vl->values_types[0] == LCC_TYPE_GAUGE)
225 vl->values[0].gauge = 100.0 * ((gauge_t) random ()) / (((gauge_t) RAND_MAX) + 1.0);
226 else
227 vl->values[0].derive += (derive_t) get_boundet_random (0, 100);
229 status = lcc_network_values_send (net, vl);
230 if (status != 0)
231 fprintf (stderr, "lcc_network_values_send failed with status %i.\n", status);
233 vl->time += vl->interval;
235 return (0);
236 } /* }}} int send_value */
238 static int get_integer_opt (const char *str, int *ret_value) /* {{{ */
239 {
240 char *endptr;
241 int tmp;
243 errno = 0;
244 endptr = NULL;
245 tmp = (int) strtol (str, &endptr, /* base = */ 0);
246 if (errno != 0)
247 {
248 fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n",
249 str, strerror (errno));
250 exit (EXIT_FAILURE);
251 }
252 else if (endptr == str)
253 {
254 fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str);
255 exit (EXIT_FAILURE);
256 }
257 else if (*endptr != 0)
258 {
259 fprintf (stderr, "Garbage after end of value: \"%s\"\n", str);
260 exit (EXIT_FAILURE);
261 }
263 *ret_value = tmp;
264 return (0);
265 } /* }}} int get_integer_opt */
267 static int get_double_opt (const char *str, double *ret_value) /* {{{ */
268 {
269 char *endptr;
270 double tmp;
272 errno = 0;
273 endptr = NULL;
274 tmp = strtod (str, &endptr);
275 if (errno != 0)
276 {
277 fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n",
278 str, strerror (errno));
279 exit (EXIT_FAILURE);
280 }
281 else if (endptr == str)
282 {
283 fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str);
284 exit (EXIT_FAILURE);
285 }
286 else if (*endptr != 0)
287 {
288 fprintf (stderr, "Garbage after end of value: \"%s\"\n", str);
289 exit (EXIT_FAILURE);
290 }
292 *ret_value = tmp;
293 return (0);
294 } /* }}} int get_double_opt */
296 static int read_options (int argc, char **argv) /* {{{ */
297 {
298 int opt;
300 while ((opt = getopt (argc, argv, "n:H:p:i:d:D:h")) != -1)
301 {
302 switch (opt)
303 {
304 case 'n':
305 get_integer_opt (optarg, &conf_num_values);
306 break;
308 case 'H':
309 get_integer_opt (optarg, &conf_num_hosts);
310 break;
312 case 'p':
313 get_integer_opt (optarg, &conf_num_plugins);
314 break;
316 case 'i':
317 get_double_opt (optarg, &conf_interval);
318 break;
320 case 'd':
321 conf_destination = optarg;
322 break;
324 case 'D':
325 conf_service = optarg;
326 break;
328 case 'h':
329 exit_usage (EXIT_SUCCESS);
331 default:
332 exit_usage (EXIT_FAILURE);
333 } /* switch (opt) */
334 } /* while (getopt) */
336 return (0);
337 } /* }}} int read_options */
339 int main (int argc, char **argv) /* {{{ */
340 {
341 int i;
342 double last_time;
343 int values_sent = 0;
345 read_options (argc, argv);
347 sigint_action.sa_handler = signal_handler;
348 sigaction (SIGINT, &sigint_action, /* old = */ NULL);
350 sigterm_action.sa_handler = signal_handler;
351 sigaction (SIGTERM, &sigterm_action, /* old = */ NULL);
354 values_heap = c_heap_create (compare_time);
355 if (values_heap == NULL)
356 {
357 fprintf (stderr, "c_heap_create failed.\n");
358 exit (EXIT_FAILURE);
359 }
361 net = lcc_network_create ();
362 if (net == NULL)
363 {
364 fprintf (stderr, "lcc_network_create failed.\n");
365 exit (EXIT_FAILURE);
366 }
367 else
368 {
369 lcc_server_t *srv;
371 srv = lcc_server_create (net, conf_destination, conf_service);
372 if (srv == NULL)
373 {
374 fprintf (stderr, "lcc_server_create failed.\n");
375 exit (EXIT_FAILURE);
376 }
378 lcc_server_set_ttl (srv, 42);
379 #if 0
380 lcc_server_set_security_level (srv, ENCRYPT,
381 "admin", "password1");
382 #endif
383 }
385 fprintf (stdout, "Creating %i values ... ", conf_num_values);
386 fflush (stdout);
387 for (i = 0; i < conf_num_values; i++)
388 {
389 lcc_value_list_t *vl;
391 vl = create_value_list ();
392 if (vl == NULL)
393 {
394 fprintf (stderr, "create_value_list failed.\n");
395 exit (EXIT_FAILURE);
396 }
398 c_heap_insert (values_heap, vl);
399 }
400 fprintf (stdout, "done\n");
402 last_time = 0;
403 while (loop)
404 {
405 lcc_value_list_t *vl = c_heap_get_root (values_heap);
407 if (vl == NULL)
408 break;
410 if (vl->time != last_time)
411 {
412 printf ("%i values have been sent.\n", values_sent);
414 /* Check if we need to sleep */
415 double now = dtime ();
417 while (now < vl->time)
418 {
419 /* 1 / 100 second */
420 struct timespec ts = { 0, 10000000 };
422 ts.tv_sec = (time_t) now;
423 ts.tv_nsec = (long) ((now - ((double) ts.tv_sec)) * 1e9);
425 nanosleep (&ts, /* remaining = */ NULL);
426 now = dtime ();
428 if (!loop)
429 break;
430 }
431 last_time = vl->time;
432 }
434 send_value (vl);
435 values_sent++;
437 c_heap_insert (values_heap, vl);
438 }
440 fprintf (stdout, "Shutting down.\n");
441 fflush (stdout);
443 while (42)
444 {
445 lcc_value_list_t *vl = c_heap_get_root (values_heap);
446 if (vl == NULL)
447 break;
448 destroy_value_list (vl);
449 }
450 c_heap_destroy (values_heap);
452 lcc_network_destroy (net);
453 exit (EXIT_SUCCESS);
454 return (0);
455 } /* }}} int main */
457 /* vim: set sw=2 sts=2 et fdm=marker : */