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) /**/
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) /* {{{ */
74 fprintf ((exit_status == EXIT_FAILURE) ? stderr : stdout,
75 "collectd-tg -- collectd traffic generator\n"
77 " Usage: collectd-ng [OPTION]\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"
86 " -D <port> Destination port of the network packets.\n"
88 " -h Print usage information (this output).\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,
94 NET_DEFAULT_V6_ADDR, NET_DEFAULT_PORT);
96 } /* }}} void exit_usage */
98 static void signal_handler (int signal) /* {{{ */
101 } /* }}} void signal_handler */
103 static double dtime (void) /* {{{ */
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) /* {{{ */
115 const lcc_value_list_t *vl0 = v0;
116 const lcc_value_list_t *vl1 = v1;
118 if (vl0->time < vl1->time)
120 else if (vl0->time > vl1->time)
124 } /* }}} int compare_time */
126 static int get_boundet_random (int min, int max) /* {{{ */
132 if (min == (max - 1))
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) /* {{{ */
142 lcc_value_list_t *vl;
145 vl = malloc (sizeof (*vl));
148 fprintf (stderr, "malloc failed.\n");
151 memset (vl, 0, sizeof (*vl));
153 vl->values = calloc (/* nmemb = */ 1, sizeof (*vl->values));
154 if (vl->values == NULL)
156 fprintf (stderr, "calloc failed.\n");
161 vl->values_types = calloc (/* nmemb = */ 1, sizeof (*vl->values_types));
162 if (vl->values_types == NULL)
164 fprintf (stderr, "calloc failed.\n");
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;
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),
194 } /* }}} int create_value_list */
196 static void destroy_value_list (lcc_value_list_t *vl) /* {{{ */
202 free (vl->values_types);
204 } /* }}} void destroy_value_list */
206 static int send_value (lcc_value_list_t *vl) /* {{{ */
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);
213 vl->values[0].derive += (derive_t) get_boundet_random (0, 100);
215 status = lcc_network_values_send (net, vl);
217 fprintf (stderr, "lcc_network_values_send failed with status %i.\n", status);
219 vl->time += vl->interval;
222 } /* }}} int send_value */
224 static int get_integer_opt (const char *str, int *ret_value) /* {{{ */
231 tmp = (int) strtol (str, &endptr, /* base = */ 0);
234 fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n",
235 str, strerror (errno));
238 else if (endptr == str)
240 fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str);
243 else if (*endptr != 0)
245 fprintf (stderr, "Garbage after end of value: \"%s\"\n", str);
251 } /* }}} int get_integer_opt */
253 static int get_double_opt (const char *str, double *ret_value) /* {{{ */
260 tmp = strtod (str, &endptr);
263 fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n",
264 str, strerror (errno));
267 else if (endptr == str)
269 fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str);
272 else if (*endptr != 0)
274 fprintf (stderr, "Garbage after end of value: \"%s\"\n", str);
280 } /* }}} int get_double_opt */
282 static int read_options (int argc, char **argv) /* {{{ */
286 while ((opt = getopt (argc, argv, "n:H:p:i:d:D:h")) != -1)
291 get_integer_opt (optarg, &conf_num_values);
295 get_integer_opt (optarg, &conf_num_hosts);
299 get_integer_opt (optarg, &conf_num_plugins);
303 get_double_opt (optarg, &conf_interval);
307 conf_destination = optarg;
311 conf_service = optarg;
315 exit_usage (EXIT_SUCCESS);
318 exit_usage (EXIT_FAILURE);
320 } /* while (getopt) */
323 } /* }}} int read_options */
325 int main (int argc, char **argv) /* {{{ */
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)
343 fprintf (stderr, "c_heap_create failed.\n");
347 net = lcc_network_create ();
350 fprintf (stderr, "lcc_network_create failed.\n");
357 srv = lcc_server_create (net, conf_destination, conf_service);
360 fprintf (stderr, "lcc_server_create failed.\n");
364 lcc_server_set_ttl (srv, 42);
366 lcc_server_set_security_level (srv, ENCRYPT,
367 "admin", "password1");
371 fprintf (stdout, "Creating %i values ... ", conf_num_values);
373 for (i = 0; i < conf_num_values; i++)
375 lcc_value_list_t *vl;
377 vl = create_value_list ();
380 fprintf (stderr, "create_value_list failed.\n");
384 c_heap_insert (values_heap, vl);
386 fprintf (stdout, "done\n");
391 lcc_value_list_t *vl = c_heap_get_root (values_heap);
396 if (vl->time != last_time)
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)
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);
417 last_time = vl->time;
423 c_heap_insert (values_heap, vl);
426 fprintf (stdout, "Shutting down.\n");
431 lcc_value_list_t *vl = c_heap_get_root (values_heap);
434 destroy_value_list (vl);
436 c_heap_destroy (values_heap);
438 lcc_network_destroy (net);
443 /* vim: set sw=2 sts=2 et fdm=marker : */