cd4a5f80200e7d56501ff4729598d816670e5e00
[strongswan.git] / src / charon / 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 * $Id$
16 */
17
18 #include "load_tester_plugin.h"
19 #include "load_tester_config.h"
20 #include "load_tester_creds.h"
21 #include "load_tester_ipsec.h"
22 #include "load_tester_listener.h"
23 #include "load_tester_diffie_hellman.h"
24
25 #include <unistd.h>
26
27 #include <daemon.h>
28 #include <processing/jobs/callback_job.h>
29 #include <utils/mutex.h>
30
31 typedef struct private_load_tester_plugin_t private_load_tester_plugin_t;
32
33 /**
34 * private data of load_tester plugin
35 */
36 struct private_load_tester_plugin_t {
37
38 /**
39 * implements plugin interface
40 */
41 load_tester_plugin_t public;
42
43 /**
44 * load_tester configuration backend
45 */
46 load_tester_config_t *config;
47
48 /**
49 * load_tester credential set implementation
50 */
51 load_tester_creds_t *creds;
52
53 /**
54 * event handler, listens on bus
55 */
56 load_tester_listener_t *listener;
57
58 /**
59 * number of iterations per thread
60 */
61 int iterations;
62
63 /**
64 * number desired initiator threads
65 */
66 int initiators;
67
68 /**
69 * currenly running initiators
70 */
71 int running;
72
73 /**
74 * delay between initiations, in ms
75 */
76 int delay;
77
78 /**
79 * mutex to lock running field
80 */
81 mutex_t *mutex;
82
83 /**
84 * condvar to wait for initiators
85 */
86 condvar_t *condvar;
87 };
88
89 /**
90 * Begin the load test
91 */
92 static job_requeue_t do_load_test(private_load_tester_plugin_t *this)
93 {
94 peer_cfg_t *peer_cfg;
95 child_cfg_t *child_cfg = NULL;;
96 enumerator_t *enumerator;
97 int i, s = 0, ms = 0;
98
99 this->mutex->lock(this->mutex);
100 if (!this->running)
101 {
102 this->running = this->initiators;
103 }
104 this->mutex->unlock(this->mutex);
105 if (this->delay)
106 {
107 s = this->delay / 1000;
108 ms = this->delay % 1000;
109 }
110 peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
111 "load-test");
112 if (peer_cfg)
113 {
114 enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
115 if (enumerator->enumerate(enumerator, &child_cfg))
116 {
117 child_cfg->get_ref(child_cfg);
118 }
119 enumerator->destroy(enumerator);
120
121 if (child_cfg)
122 {
123 for (i = 0; this->iterations == 0 || i < this->iterations; i++)
124 {
125 charon->controller->initiate(charon->controller,
126 peer_cfg->get_ref(peer_cfg), child_cfg->get_ref(child_cfg),
127 NULL, NULL);
128
129 if (s)
130 {
131 sleep(s);
132 }
133 if (ms)
134 {
135 usleep(ms * 1000);
136 }
137 }
138 child_cfg->destroy(child_cfg);
139 }
140 peer_cfg->destroy(peer_cfg);
141 }
142 this->mutex->lock(this->mutex);
143 this->running--;
144 this->mutex->unlock(this->mutex);
145 this->condvar->signal(this->condvar);
146 return JOB_REQUEUE_NONE;
147 }
148
149 /**
150 * Implementation of plugin_t.destroy
151 */
152 static void destroy(private_load_tester_plugin_t *this)
153 {
154 this->iterations = -1;
155 this->mutex->lock(this->mutex);
156 while (this->running)
157 {
158 this->condvar->wait(this->condvar, this->mutex);
159 }
160 this->mutex->unlock(this->mutex);
161 charon->kernel_interface->remove_ipsec_interface(charon->kernel_interface,
162 (kernel_ipsec_constructor_t)load_tester_ipsec_create);
163 charon->backends->remove_backend(charon->backends, &this->config->backend);
164 charon->credentials->remove_set(charon->credentials, &this->creds->credential_set);
165 charon->bus->remove_listener(charon->bus, &this->listener->listener);
166 this->config->destroy(this->config);
167 this->creds->destroy(this->creds);
168 this->listener->destroy(this->listener);
169 lib->crypto->remove_dh(lib->crypto,
170 (dh_constructor_t)load_tester_diffie_hellman_create);
171 this->mutex->destroy(this->mutex);
172 this->condvar->destroy(this->condvar);
173 free(this);
174 }
175
176 /*
177 * see header file
178 */
179 plugin_t *plugin_create()
180 {
181 private_load_tester_plugin_t *this = malloc_thing(private_load_tester_plugin_t);
182 int i;
183
184 this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
185
186 lib->crypto->add_dh(lib->crypto, MODP_NULL,
187 (dh_constructor_t)load_tester_diffie_hellman_create);
188
189 this->mutex = mutex_create(MUTEX_DEFAULT);
190 this->condvar = condvar_create(CONDVAR_DEFAULT);
191 this->config = load_tester_config_create();
192 this->creds = load_tester_creds_create();
193 this->listener = load_tester_listener_create();
194 charon->backends->add_backend(charon->backends, &this->config->backend);
195 charon->credentials->add_set(charon->credentials, &this->creds->credential_set);
196 charon->bus->add_listener(charon->bus, &this->listener->listener);
197
198 if (lib->settings->get_bool(lib->settings,
199 "charon.plugins.load_tester.fake_kernel", FALSE))
200 {
201 charon->kernel_interface->add_ipsec_interface(charon->kernel_interface,
202 (kernel_ipsec_constructor_t)load_tester_ipsec_create);
203 }
204 this->delay = lib->settings->get_int(lib->settings,
205 "charon.plugins.load_tester.delay", 0);
206 this->iterations = lib->settings->get_int(lib->settings,
207 "charon.plugins.load_tester.iterations", 1);
208 this->initiators = lib->settings->get_int(lib->settings,
209 "charon.plugins.load_tester.initiators", 0);
210 this->running = 0;
211 for (i = 0; i < this->initiators; i++)
212 {
213 charon->processor->queue_job(charon->processor,
214 (job_t*)callback_job_create((callback_job_cb_t)do_load_test,
215 this, NULL, NULL));
216 }
217 return &this->public.plugin;
218 }
219