2 * collectd-tg - src/collectd-tg.c
3 * Copyright (C) 2010-2012 Florian octo Forster
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:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
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.
24 * Florian Forster <octo at collectd.org>
32 #define __attribute__(x) /**/
46 #include "utils_heap.h"
48 #include "collectd/client.h"
49 #include "collectd/network.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;
67 static struct sigaction sigint_action;
68 static struct sigaction sigterm_action;
70 static bool loop = true;
72 __attribute__((noreturn)) static void exit_usage(int exit_status) /* {{{ */
75 (exit_status == EXIT_FAILURE) ? stderr : stdout,
76 "collectd-tg -- collectd traffic generator\n"
78 " Usage: collectd-ng [OPTION]\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"
87 " -D <port> Destination port of the network packets.\n"
89 " -h Print usage information (this output).\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, DEF_INTERVAL,
94 NET_DEFAULT_V6_ADDR, NET_DEFAULT_PORT);
96 } /* }}} void exit_usage */
98 static void signal_handler(int __attribute__((unused)) signal) /* {{{ */
101 } /* }}} void signal_handler */
103 #if HAVE_CLOCK_GETTIME
104 static double dtime(void) /* {{{ */
106 struct timespec ts = {0};
108 if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0)
109 perror("clock_gettime");
111 return (double)ts.tv_sec + (double)ts.tv_nsec / 1e9;
112 } /* }}} double dtime */
114 /* Work around for Mac OS X which doesn't have clock_gettime(2). *sigh* */
115 static double dtime(void) /* {{{ */
117 struct timeval tv = {0};
119 if (gettimeofday(&tv, /* timezone = */ NULL) != 0)
120 perror("gettimeofday");
122 return (double)tv.tv_sec + ((double)tv.tv_usec) / 1e6;
123 } /* }}} double dtime */
126 static int compare_time(const void *v0, const void *v1) /* {{{ */
128 const lcc_value_list_t *vl0 = v0;
129 const lcc_value_list_t *vl1 = v1;
131 if (vl0->time < vl1->time)
133 else if (vl0->time > vl1->time)
137 } /* }}} int compare_time */
139 static int get_boundet_random(int min, int max) /* {{{ */
145 if (min == (max - 1))
150 return min + ((int)(((double)range) * ((double)random()) /
151 (((double)RAND_MAX) + 1.0)));
152 } /* }}} int get_boundet_random */
154 static lcc_value_list_t *create_value_list(void) /* {{{ */
156 lcc_value_list_t *vl;
159 vl = calloc(1, sizeof(*vl));
161 fprintf(stderr, "calloc failed.\n");
165 vl->values = calloc(/* nmemb = */ 1, sizeof(*vl->values));
166 if (vl->values == NULL) {
167 fprintf(stderr, "calloc failed.\n");
172 vl->values_types = calloc(/* nmemb = */ 1, sizeof(*vl->values_types));
173 if (vl->values_types == NULL) {
174 fprintf(stderr, "calloc failed.\n");
182 host_num = get_boundet_random(0, conf_num_hosts);
184 vl->interval = conf_interval;
185 vl->time = 1.0 + dtime() + (host_num % (1 + (int)vl->interval));
187 if (get_boundet_random(0, 2) == 0)
188 vl->values_types[0] = LCC_TYPE_GAUGE;
190 vl->values_types[0] = LCC_TYPE_DERIVE;
192 snprintf(vl->identifier.host, sizeof(vl->identifier.host), "host%04i",
194 snprintf(vl->identifier.plugin, sizeof(vl->identifier.plugin), "plugin%03i",
195 get_boundet_random(0, conf_num_plugins));
196 strncpy(vl->identifier.type,
197 (vl->values_types[0] == LCC_TYPE_GAUGE) ? "gauge" : "derive",
198 sizeof(vl->identifier.type));
199 vl->identifier.type[sizeof(vl->identifier.type) - 1] = 0;
200 snprintf(vl->identifier.type_instance, sizeof(vl->identifier.type_instance),
204 } /* }}} int create_value_list */
206 static void destroy_value_list(lcc_value_list_t *vl) /* {{{ */
212 free(vl->values_types);
214 } /* }}} void destroy_value_list */
216 static int send_value(lcc_value_list_t *vl) /* {{{ */
220 if (vl->values_types[0] == LCC_TYPE_GAUGE)
221 vl->values[0].gauge =
222 100.0 * ((gauge_t)random()) / (((gauge_t)RAND_MAX) + 1.0);
224 vl->values[0].derive += (derive_t)get_boundet_random(0, 100);
226 status = lcc_network_values_send(net, vl);
228 fprintf(stderr, "lcc_network_values_send failed with status %i.\n", status);
230 vl->time += vl->interval;
233 } /* }}} int send_value */
235 static int get_integer_opt(const char *str, int *ret_value) /* {{{ */
242 tmp = (int)strtol(str, &endptr, /* base = */ 0);
244 fprintf(stderr, "Unable to parse option as a number: \"%s\": %s\n", str,
247 } else if (endptr == str) {
248 fprintf(stderr, "Unable to parse option as a number: \"%s\"\n", str);
250 } else if (*endptr != 0) {
251 fprintf(stderr, "Garbage after end of value: \"%s\"\n", str);
257 } /* }}} int get_integer_opt */
259 static int get_double_opt(const char *str, double *ret_value) /* {{{ */
266 tmp = strtod(str, &endptr);
268 fprintf(stderr, "Unable to parse option as a number: \"%s\": %s\n", str,
271 } else if (endptr == str) {
272 fprintf(stderr, "Unable to parse option as a number: \"%s\"\n", str);
274 } else if (*endptr != 0) {
275 fprintf(stderr, "Garbage after end of value: \"%s\"\n", str);
281 } /* }}} int get_double_opt */
283 static int read_options(int argc, char **argv) /* {{{ */
287 while ((opt = getopt(argc, argv, "n:H:p:i:d:D:h")) != -1) {
290 get_integer_opt(optarg, &conf_num_values);
294 get_integer_opt(optarg, &conf_num_hosts);
298 get_integer_opt(optarg, &conf_num_plugins);
302 get_double_opt(optarg, &conf_interval);
306 conf_destination = optarg;
310 conf_service = optarg;
314 exit_usage(EXIT_SUCCESS);
317 exit_usage(EXIT_FAILURE);
319 } /* while (getopt) */
322 } /* }}} int read_options */
324 int main(int argc, char **argv) /* {{{ */
329 read_options(argc, argv);
331 sigint_action.sa_handler = signal_handler;
332 sigaction(SIGINT, &sigint_action, /* old = */ NULL);
334 sigterm_action.sa_handler = signal_handler;
335 sigaction(SIGTERM, &sigterm_action, /* old = */ NULL);
337 values_heap = c_heap_create(compare_time);
338 if (values_heap == NULL) {
339 fprintf(stderr, "c_heap_create failed.\n");
343 net = lcc_network_create();
345 fprintf(stderr, "lcc_network_create failed.\n");
350 srv = lcc_server_create(net, conf_destination, conf_service);
352 fprintf(stderr, "lcc_server_create failed.\n");
356 lcc_server_set_ttl(srv, 42);
358 lcc_server_set_security_level (srv, ENCRYPT,
359 "admin", "password1");
363 fprintf(stdout, "Creating %i values ... ", conf_num_values);
365 for (int i = 0; i < conf_num_values; i++) {
366 lcc_value_list_t *vl;
368 vl = create_value_list();
370 fprintf(stderr, "create_value_list failed.\n");
374 c_heap_insert(values_heap, vl);
376 fprintf(stdout, "done\n");
380 lcc_value_list_t *vl = c_heap_get_root(values_heap);
385 if (vl->time != last_time) {
386 printf("%i values have been sent.\n", values_sent);
388 /* Check if we need to sleep */
389 double now = dtime();
391 while (now < vl->time) {
392 double diff = vl->time - now;
393 struct timespec ts = {
394 .tv_sec = (time_t)diff,
396 ts.tv_nsec = (long)((diff - ((double)ts.tv_sec)) * 1e9);
398 nanosleep(&ts, /* remaining = */ NULL);
404 last_time = vl->time;
410 c_heap_insert(values_heap, vl);
413 fprintf(stdout, "Shutting down.\n");
417 lcc_value_list_t *vl = c_heap_get_root(values_heap);
420 destroy_value_list(vl);
422 c_heap_destroy(values_heap);
424 lcc_network_destroy(net);