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1.1 misho 1: /*
2: * Copyright (C) 2008 Martin Willi
3: * HSR 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_control.h"
22: #include "load_tester_diffie_hellman.h"
23:
24: #include <unistd.h>
25:
26: #include <daemon.h>
27: #include <processing/jobs/callback_job.h>
28: #include <threading/condvar.h>
29: #include <threading/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: * Unix control socket to initiate load-tests
55: */
56: load_tester_control_t *control;
57:
58: /**
59: * event handler, listens on bus
60: */
61: load_tester_listener_t *listener;
62:
63: /**
64: * number of iterations per thread
65: */
66: int iterations;
67:
68: /**
69: * number desired initiator threads
70: */
71: int initiators;
72:
73: /**
74: * currently running initiators
75: */
76: int running;
77:
78: /**
79: * delay between initiations, in ms
80: */
81: int delay;
82:
83: /**
84: * Throttle initiation if half-open IKE_SA count reached
85: */
86: int init_limit;
87:
88: /**
89: * mutex to lock running field
90: */
91: mutex_t *mutex;
92:
93: /**
94: * condvar to wait for initiators
95: */
96: condvar_t *condvar;
97: };
98:
99: /**
100: * Begin the load test
101: */
102: static job_requeue_t do_load_test(private_load_tester_plugin_t *this)
103: {
104: int i, s = 0, ms = 0;
105:
106: this->mutex->lock(this->mutex);
107: this->running++;
108: this->mutex->unlock(this->mutex);
109: if (this->delay)
110: {
111: s = this->delay / 1000;
112: ms = this->delay % 1000;
113: }
114:
115: for (i = 0; this->iterations == 0 || i < this->iterations; i++)
116: {
117: peer_cfg_t *peer_cfg;
118: child_cfg_t *child_cfg = NULL;
119: enumerator_t *enumerator;
120:
121: if (this->init_limit)
122: {
123: while ((charon->ike_sa_manager->get_count(charon->ike_sa_manager) -
124: this->listener->get_established(this->listener)) >
125: this->init_limit)
126: {
127: if (s)
128: {
129: sleep(s);
130: }
131: if (ms)
132: {
133: usleep(ms * 1000);
134: }
135: }
136: }
137:
138: peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
139: "load-test");
140: if (!peer_cfg)
141: {
142: break;
143: }
144: enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
145: if (!enumerator->enumerate(enumerator, &child_cfg))
146: {
147: enumerator->destroy(enumerator);
148: break;
149: }
150: enumerator->destroy(enumerator);
151:
152: charon->controller->initiate(charon->controller,
153: peer_cfg, child_cfg->get_ref(child_cfg),
154: NULL, NULL, 0, FALSE);
155: if (s)
156: {
157: sleep(s);
158: }
159: if (ms)
160: {
161: usleep(ms * 1000);
162: }
163: }
164: this->mutex->lock(this->mutex);
165: this->running--;
166: this->condvar->signal(this->condvar);
167: this->mutex->unlock(this->mutex);
168: return JOB_REQUEUE_NONE;
169: }
170:
171: METHOD(plugin_t, get_name, char*,
172: private_load_tester_plugin_t *this)
173: {
174: return "load-tester";
175: }
176:
177: /**
178: * Register load_tester plugin features
179: */
180: static bool register_load_tester(private_load_tester_plugin_t *this,
181: plugin_feature_t *feature, bool reg, void *data)
182: {
183: if (reg)
184: {
185: u_int i, shutdown_on = 0;
186:
187: this->config = load_tester_config_create();
188: this->creds = load_tester_creds_create();
189: this->control = load_tester_control_create();
190:
191: charon->backends->add_backend(charon->backends, &this->config->backend);
192: lib->credmgr->add_set(lib->credmgr, &this->creds->credential_set);
193:
194: if (lib->settings->get_bool(lib->settings,
195: "%s.plugins.load-tester.shutdown_when_complete", 0, lib->ns))
196: {
197: shutdown_on = this->iterations * this->initiators;
198: }
199: this->listener = load_tester_listener_create(shutdown_on, this->config);
200: charon->bus->add_listener(charon->bus, &this->listener->listener);
201:
202: for (i = 0; i < this->initiators; i++)
203: {
204: lib->processor->queue_job(lib->processor, (job_t*)
205: callback_job_create_with_prio((callback_job_cb_t)do_load_test,
206: this, NULL, NULL, JOB_PRIO_CRITICAL));
207: }
208: }
209: else
210: {
211: this->iterations = -1;
212: this->mutex->lock(this->mutex);
213: while (this->running)
214: {
215: this->condvar->wait(this->condvar, this->mutex);
216: }
217: this->mutex->unlock(this->mutex);
218: charon->backends->remove_backend(charon->backends, &this->config->backend);
219: lib->credmgr->remove_set(lib->credmgr, &this->creds->credential_set);
220: charon->bus->remove_listener(charon->bus, &this->listener->listener);
221: this->config->destroy(this->config);
222: this->creds->destroy(this->creds);
223: this->listener->destroy(this->listener);
224: this->control->destroy(this->control);
225: }
226: return TRUE;
227: }
228:
229: METHOD(plugin_t, get_features, int,
230: private_load_tester_plugin_t *this, plugin_feature_t *features[])
231: {
232: static plugin_feature_t f[] = {
233: PLUGIN_REGISTER(DH, load_tester_diffie_hellman_create),
234: PLUGIN_PROVIDE(DH, MODP_NULL),
235: PLUGIN_DEPENDS(CUSTOM, "load-tester"),
236: PLUGIN_CALLBACK((plugin_feature_callback_t)register_load_tester, NULL),
237: PLUGIN_PROVIDE(CUSTOM, "load-tester"),
238: PLUGIN_DEPENDS(CUSTOM, "kernel-net"),
239: PLUGIN_SDEPEND(PRIVKEY, KEY_RSA),
240: PLUGIN_SDEPEND(CERT_DECODE, CERT_ANY),
241: PLUGIN_SDEPEND(CERT_DECODE, CERT_X509),
242: PLUGIN_CALLBACK(kernel_ipsec_register, load_tester_ipsec_create),
243: PLUGIN_PROVIDE(CUSTOM, "kernel-ipsec"),
244: };
245: int count = countof(f);
246:
247: *features = f;
248:
249: if (!lib->settings->get_bool(lib->settings,
250: "%s.plugins.load-tester.fake_kernel", FALSE, lib->ns))
251: {
252: count -= 2;
253: }
254: return count;
255: }
256:
257: METHOD(plugin_t, destroy, void,
258: private_load_tester_plugin_t *this)
259: {
260: this->mutex->destroy(this->mutex);
261: this->condvar->destroy(this->condvar);
262: free(this);
263: }
264:
265: /*
266: * see header file
267: */
268: plugin_t *load_tester_plugin_create()
269: {
270: private_load_tester_plugin_t *this;
271:
272: if (!lib->settings->get_bool(lib->settings, "%s.plugins.load-tester.enable",
273: FALSE, lib->ns))
274: {
275: DBG1(DBG_CFG, "disabling load-tester plugin, not configured");
276: return NULL;
277: }
278:
279: INIT(this,
280: .public = {
281: .plugin = {
282: .get_name = _get_name,
283: .get_features = _get_features,
284: .reload = (void*)return_false,
285: .destroy = _destroy,
286: },
287: },
288: .delay = lib->settings->get_int(lib->settings,
289: "%s.plugins.load-tester.delay", 0, lib->ns),
290: .iterations = lib->settings->get_int(lib->settings,
291: "%s.plugins.load-tester.iterations", 1, lib->ns),
292: .initiators = lib->settings->get_int(lib->settings,
293: "%s.plugins.load-tester.initiators", 0, lib->ns),
294: .init_limit = lib->settings->get_int(lib->settings,
295: "%s.plugins.load-tester.init_limit", 0, lib->ns),
296: .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
297: .condvar = condvar_create(CONDVAR_TYPE_DEFAULT),
298: );
299: return &this->public.plugin;
300: }