Fixed common misspellings.
[strongswan.git] / src / libcharon / plugins / load_tester / load_tester_plugin.c
1 /*
2 * Copyright (C) 2008 Martin Willi
3 * Hochschule fuer Technik Rapperswil
4 *
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; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include "load_tester_plugin.h"
17 #include "load_tester_config.h"
18 #include "load_tester_creds.h"
19 #include "load_tester_ipsec.h"
20 #include "load_tester_listener.h"
21 #include "load_tester_diffie_hellman.h"
22
23 #include <unistd.h>
24
25 #include <hydra.h>
26 #include <daemon.h>
27 #include <processing/jobs/callback_job.h>
28 #include <threading/condvar.h>
29 #include <threading/mutex.h>
30
31 static const char *plugin_name = "load_tester";
32
33 typedef struct private_load_tester_plugin_t private_load_tester_plugin_t;
34
35 /**
36 * private data of load_tester plugin
37 */
38 struct private_load_tester_plugin_t {
39
40 /**
41 * implements plugin interface
42 */
43 load_tester_plugin_t public;
44
45 /**
46 * load_tester configuration backend
47 */
48 load_tester_config_t *config;
49
50 /**
51 * load_tester credential set implementation
52 */
53 load_tester_creds_t *creds;
54
55 /**
56 * event handler, listens on bus
57 */
58 load_tester_listener_t *listener;
59
60 /**
61 * number of iterations per thread
62 */
63 int iterations;
64
65 /**
66 * number desired initiator threads
67 */
68 int initiators;
69
70 /**
71 * currently running initiators
72 */
73 int running;
74
75 /**
76 * delay between initiations, in ms
77 */
78 int delay;
79
80 /**
81 * Throttle initiation if half-open IKE_SA count reached
82 */
83 int init_limit;
84
85 /**
86 * mutex to lock running field
87 */
88 mutex_t *mutex;
89
90 /**
91 * condvar to wait for initiators
92 */
93 condvar_t *condvar;
94 };
95
96 /**
97 * Begin the load test
98 */
99 static job_requeue_t do_load_test(private_load_tester_plugin_t *this)
100 {
101 int i, s = 0, ms = 0;
102
103 this->mutex->lock(this->mutex);
104 this->running++;
105 this->mutex->unlock(this->mutex);
106 if (this->delay)
107 {
108 s = this->delay / 1000;
109 ms = this->delay % 1000;
110 }
111
112 for (i = 0; this->iterations == 0 || i < this->iterations; i++)
113 {
114 peer_cfg_t *peer_cfg;
115 child_cfg_t *child_cfg = NULL;
116 enumerator_t *enumerator;
117
118 if (this->init_limit)
119 {
120 while ((charon->ike_sa_manager->get_count(charon->ike_sa_manager) -
121 this->listener->get_established(this->listener)) >
122 this->init_limit)
123 {
124 if (s)
125 {
126 sleep(s);
127 }
128 if (ms)
129 {
130 usleep(ms * 1000);
131 }
132 }
133 }
134
135 peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
136 "load-test");
137 if (!peer_cfg)
138 {
139 break;
140 }
141 enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
142 if (!enumerator->enumerate(enumerator, &child_cfg))
143 {
144 enumerator->destroy(enumerator);
145 break;
146 }
147 enumerator->destroy(enumerator);
148
149 charon->controller->initiate(charon->controller,
150 peer_cfg, child_cfg->get_ref(child_cfg),
151 NULL, NULL);
152 if (s)
153 {
154 sleep(s);
155 }
156 if (ms)
157 {
158 usleep(ms * 1000);
159 }
160 }
161 this->mutex->lock(this->mutex);
162 this->running--;
163 this->condvar->signal(this->condvar);
164 this->mutex->unlock(this->mutex);
165 return JOB_REQUEUE_NONE;
166 }
167
168 METHOD(plugin_t, get_name, char*,
169 private_load_tester_plugin_t *this)
170 {
171 return "load-tester";
172 }
173
174 METHOD(plugin_t, destroy, void,
175 private_load_tester_plugin_t *this)
176 {
177 this->iterations = -1;
178 this->mutex->lock(this->mutex);
179 while (this->running)
180 {
181 this->condvar->wait(this->condvar, this->mutex);
182 }
183 this->mutex->unlock(this->mutex);
184 hydra->kernel_interface->remove_ipsec_interface(hydra->kernel_interface,
185 (kernel_ipsec_constructor_t)load_tester_ipsec_create);
186 charon->backends->remove_backend(charon->backends, &this->config->backend);
187 lib->credmgr->remove_set(lib->credmgr, &this->creds->credential_set);
188 charon->bus->remove_listener(charon->bus, &this->listener->listener);
189 this->config->destroy(this->config);
190 this->creds->destroy(this->creds);
191 this->listener->destroy(this->listener);
192 lib->crypto->remove_dh(lib->crypto,
193 (dh_constructor_t)load_tester_diffie_hellman_create);
194 this->mutex->destroy(this->mutex);
195 this->condvar->destroy(this->condvar);
196 free(this);
197 }
198
199 /*
200 * see header file
201 */
202 plugin_t *load_tester_plugin_create()
203 {
204 private_load_tester_plugin_t *this;
205 u_int i, shutdown_on = 0;
206
207 if (!lib->settings->get_bool(lib->settings,
208 "charon.plugins.load-tester.enable", FALSE))
209 {
210 DBG1(DBG_CFG, "disabling load-tester plugin, not configured");
211 return NULL;
212 }
213
214 INIT(this,
215 .public = {
216 .plugin = {
217 .get_name = _get_name,
218 .reload = (void*)return_false,
219 .destroy = _destroy,
220 },
221 },
222 .delay = lib->settings->get_int(lib->settings,
223 "charon.plugins.load-tester.delay", 0),
224 .iterations = lib->settings->get_int(lib->settings,
225 "charon.plugins.load-tester.iterations", 1),
226 .initiators = lib->settings->get_int(lib->settings,
227 "charon.plugins.load-tester.initiators", 0),
228 .init_limit = lib->settings->get_int(lib->settings,
229 "charon.plugins.load-tester.init_limit", 0),
230 .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
231 .condvar = condvar_create(CONDVAR_TYPE_DEFAULT),
232 .config = load_tester_config_create(),
233 .creds = load_tester_creds_create(),
234 );
235
236 lib->crypto->add_dh(lib->crypto, MODP_NULL, plugin_name,
237 (dh_constructor_t)load_tester_diffie_hellman_create);
238 charon->backends->add_backend(charon->backends, &this->config->backend);
239 lib->credmgr->add_set(lib->credmgr, &this->creds->credential_set);
240
241 if (lib->settings->get_bool(lib->settings,
242 "charon.plugins.load-tester.shutdown_when_complete", 0))
243 {
244 shutdown_on = this->iterations * this->initiators;
245 }
246 this->listener = load_tester_listener_create(shutdown_on);
247 charon->bus->add_listener(charon->bus, &this->listener->listener);
248
249 if (lib->settings->get_bool(lib->settings,
250 "charon.plugins.load-tester.fake_kernel", FALSE))
251 {
252 hydra->kernel_interface->add_ipsec_interface(hydra->kernel_interface,
253 (kernel_ipsec_constructor_t)load_tester_ipsec_create);
254 }
255 for (i = 0; i < this->initiators; i++)
256 {
257 lib->processor->queue_job(lib->processor, (job_t*)
258 callback_job_create_with_prio((callback_job_cb_t)do_load_test,
259 this, NULL, NULL, JOB_PRIO_CRITICAL));
260 }
261 return &this->public.plugin;
262 }
263