Commit | Line | Data |
---|---|---|
434f8068 JR |
1 | /* |
2 | * base_client.c | |
3 | * | |
4 | * Base client application for testing of LTTng notification API | |
5 | * | |
6 | * Copyright 2017 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
7 | * | |
9d16b343 | 8 | * SPDX-License-Identifier: MIT |
434f8068 | 9 | * |
434f8068 JR |
10 | */ |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdbool.h> | |
14 | #include <string.h> | |
15 | #include <unistd.h> | |
16 | #include <inttypes.h> | |
17 | #include <assert.h> | |
18 | ||
19 | #include <lttng/action/action.h> | |
ad63a966 | 20 | #include <lttng/action/list.h> |
434f8068 JR |
21 | #include <lttng/action/notify.h> |
22 | #include <lttng/condition/buffer-usage.h> | |
23 | #include <lttng/condition/condition.h> | |
24 | #include <lttng/condition/evaluation.h> | |
25 | #include <lttng/domain.h> | |
26 | #include <lttng/endpoint.h> | |
27 | #include <lttng/notification/channel.h> | |
28 | #include <lttng/notification/notification.h> | |
29 | #include <lttng/trigger/trigger.h> | |
25040abc | 30 | #include <lttng/lttng-error.h> |
434f8068 JR |
31 | |
32 | static unsigned int nr_notifications = 0; | |
33 | static unsigned int nr_expected_notifications = 0; | |
34 | static const char *session_name = NULL; | |
35 | static const char *channel_name = NULL; | |
36 | static double threshold_ratio = 0.0; | |
37 | static uint64_t threshold_bytes = 0; | |
38 | static bool is_threshold_ratio = false; | |
702f26c8 | 39 | static bool use_action_list = false; |
434f8068 JR |
40 | static enum lttng_condition_type buffer_usage_type = LTTNG_CONDITION_TYPE_UNKNOWN; |
41 | static enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE; | |
42 | ||
43 | int handle_condition( | |
44 | const struct lttng_condition *condition, | |
45 | const struct lttng_evaluation *condition_evaluation); | |
46 | ||
53089c7c SM |
47 | static |
48 | int parse_arguments(char **argv) | |
49 | { | |
e062fb02 | 50 | int sscanf_ret; |
434f8068 JR |
51 | const char *domain_type_string = NULL; |
52 | const char *buffer_usage_type_string = NULL; | |
53 | const char *buffer_usage_threshold_type = NULL; | |
54 | const char *buffer_usage_threshold_value = NULL; | |
55 | const char *nr_expected_notifications_string = NULL; | |
702f26c8 | 56 | const char *use_action_list_value = NULL; |
434f8068 JR |
57 | |
58 | session_name = argv[1]; | |
59 | channel_name = argv[2]; | |
60 | domain_type_string = argv[3]; | |
61 | buffer_usage_type_string = argv[4]; | |
62 | buffer_usage_threshold_type = argv[5]; | |
63 | buffer_usage_threshold_value = argv[6]; | |
64 | nr_expected_notifications_string = argv[7]; | |
702f26c8 | 65 | use_action_list_value = argv[8]; |
434f8068 JR |
66 | |
67 | /* Parse arguments */ | |
68 | /* Domain type */ | |
69 | if (!strcasecmp("LTTNG_DOMAIN_UST", domain_type_string)) { | |
70 | domain_type = LTTNG_DOMAIN_UST; | |
71 | } | |
72 | if (!strcasecmp("LTTNG_DOMAIN_KERNEL", domain_type_string)) { | |
73 | domain_type = LTTNG_DOMAIN_KERNEL; | |
74 | } | |
75 | if (domain_type == LTTNG_DOMAIN_NONE) { | |
76 | printf("error: Unknown domain type\n"); | |
77 | goto error; | |
78 | } | |
79 | ||
80 | /* Buffer usage condition type */ | |
81 | if (!strcasecmp("low", buffer_usage_type_string)) { | |
82 | buffer_usage_type = LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW; | |
83 | } | |
84 | if (!strcasecmp("high", buffer_usage_type_string)) { | |
85 | buffer_usage_type = LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH; | |
86 | } | |
87 | if (buffer_usage_type == LTTNG_CONDITION_TYPE_UNKNOWN) { | |
88 | printf("error: Unknown condition type\n"); | |
89 | goto error; | |
90 | } | |
91 | ||
92 | /* Ratio or bytes ? */ | |
93 | if (!strcasecmp("bytes", buffer_usage_threshold_type)) { | |
94 | is_threshold_ratio = false; | |
95 | sscanf(buffer_usage_threshold_value, "%" SCNu64, &threshold_bytes); | |
96 | } | |
97 | ||
98 | if (!strcasecmp("ratio", buffer_usage_threshold_type)) { | |
99 | is_threshold_ratio = true; | |
100 | sscanf(buffer_usage_threshold_value, "%lf", &threshold_ratio); | |
101 | } | |
102 | ||
103 | /* Number of notification to expect */ | |
e062fb02 JG |
104 | sscanf_ret = sscanf(nr_expected_notifications_string, "%d", |
105 | &nr_expected_notifications); | |
106 | if (sscanf_ret != 1) { | |
107 | printf("error: Invalid nr_expected_notifications, sscanf returned %d\n", | |
108 | sscanf_ret); | |
109 | goto error; | |
110 | } | |
434f8068 | 111 | |
091fa780 | 112 | /* Put notify action in a group. */ |
702f26c8 JR |
113 | if (!strcasecmp("1", use_action_list_value)) { |
114 | use_action_list = true; | |
091fa780 FD |
115 | } |
116 | ||
434f8068 JR |
117 | return 0; |
118 | error: | |
119 | return 1; | |
120 | } | |
121 | ||
122 | int main(int argc, char **argv) | |
123 | { | |
124 | int ret = 0; | |
125 | enum lttng_condition_status condition_status; | |
091fa780 | 126 | enum lttng_action_status action_status; |
434f8068 JR |
127 | enum lttng_notification_channel_status nc_status; |
128 | struct lttng_notification_channel *notification_channel = NULL; | |
129 | struct lttng_condition *condition = NULL; | |
130 | struct lttng_action *action = NULL; | |
131 | struct lttng_trigger *trigger = NULL; | |
a5c2d2a7 | 132 | enum lttng_error_code ret_code; |
434f8068 JR |
133 | |
134 | /* | |
135 | * Disable buffering on stdout. | |
136 | * Safety measure to prevent hang on the validation side since | |
137 | * stdout is used for outside synchronization. | |
138 | */ | |
139 | setbuf(stdout, NULL); | |
140 | ||
091fa780 | 141 | if (argc < 9) { |
434f8068 JR |
142 | printf("error: Missing arguments for tests\n"); |
143 | ret = 1; | |
144 | goto end; | |
145 | } | |
146 | ||
147 | ret = parse_arguments(argv); | |
148 | if (ret) { | |
149 | printf("error: Could not parse arguments\n"); | |
150 | goto end; | |
151 | } | |
152 | ||
153 | /* Setup */ | |
154 | notification_channel = lttng_notification_channel_create( | |
155 | lttng_session_daemon_notification_endpoint); | |
156 | if (!notification_channel) { | |
157 | printf("error: Could not create notification channel\n"); | |
158 | ret = 1; | |
159 | goto end; | |
160 | } | |
161 | ||
162 | switch (buffer_usage_type) { | |
163 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
164 | condition = lttng_condition_buffer_usage_low_create(); | |
165 | break; | |
166 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
167 | condition = lttng_condition_buffer_usage_high_create(); | |
168 | break; | |
169 | default: | |
170 | printf("error: Invalid buffer_usage_type\n"); | |
171 | ret = 1; | |
172 | goto end; | |
173 | } | |
174 | ||
175 | if (!condition) { | |
176 | printf("error: Could not create condition object\n"); | |
177 | ret = 1; | |
178 | goto end; | |
179 | } | |
180 | ||
181 | if (is_threshold_ratio) { | |
182 | condition_status = lttng_condition_buffer_usage_set_threshold_ratio( | |
183 | condition, threshold_ratio); | |
184 | } else { | |
185 | condition_status = lttng_condition_buffer_usage_set_threshold( | |
186 | condition, threshold_bytes); | |
187 | } | |
188 | ||
189 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
190 | printf("error: Could not set threshold\n"); | |
191 | ret = 1; | |
192 | goto end; | |
193 | } | |
194 | ||
195 | condition_status = lttng_condition_buffer_usage_set_session_name( | |
196 | condition, session_name); | |
197 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
198 | printf("error: Could not set session name\n"); | |
199 | ret = 1; | |
200 | goto end; | |
201 | } | |
202 | condition_status = lttng_condition_buffer_usage_set_channel_name( | |
203 | condition, channel_name); | |
204 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
205 | printf("error: Could not set channel name\n"); | |
206 | ret = 1; | |
207 | goto end; | |
208 | } | |
209 | condition_status = lttng_condition_buffer_usage_set_domain_type( | |
854382b8 | 210 | condition, domain_type); |
434f8068 JR |
211 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
212 | printf("error: Could not set domain type\n"); | |
213 | ret = 1; | |
214 | goto end; | |
215 | } | |
216 | ||
702f26c8 | 217 | if (use_action_list) { |
091fa780 FD |
218 | struct lttng_action *notify, *group; |
219 | ||
702f26c8 | 220 | group = lttng_action_list_create(); |
091fa780 | 221 | if (!group) { |
702f26c8 | 222 | printf("error: Could not create action list\n"); |
091fa780 FD |
223 | ret = 1; |
224 | goto end; | |
225 | } | |
226 | ||
227 | notify = lttng_action_notify_create(); | |
228 | if (!notify) { | |
229 | lttng_action_destroy(group); | |
230 | printf("error: Could not create action notify\n"); | |
231 | ret = 1; | |
232 | goto end; | |
233 | } | |
234 | ||
702f26c8 | 235 | action_status = lttng_action_list_add_action(group, notify); |
091fa780 | 236 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
702f26c8 | 237 | printf("error: Could not add action notify to action list\n"); |
091fa780 FD |
238 | lttng_action_destroy(group); |
239 | lttng_action_destroy(notify); | |
240 | ret = 1; | |
241 | goto end; | |
242 | } | |
243 | ||
244 | action = group; | |
245 | } else { | |
246 | action = lttng_action_notify_create(); | |
247 | if (!action) { | |
248 | printf("error: Could not create action notify\n"); | |
249 | ret = 1; | |
250 | goto end; | |
251 | } | |
434f8068 JR |
252 | } |
253 | ||
254 | trigger = lttng_trigger_create(condition, action); | |
255 | if (!trigger) { | |
256 | printf("error: Could not create trigger\n"); | |
257 | ret = 1; | |
258 | goto end; | |
259 | } | |
260 | ||
a5c2d2a7 | 261 | ret_code = lttng_register_trigger_with_automatic_name(trigger); |
434f8068 JR |
262 | |
263 | /* | |
264 | * An equivalent trigger might already be registered if an other app | |
265 | * registered an equivalent trigger. | |
266 | */ | |
a5c2d2a7 JG |
267 | if (ret_code != LTTNG_OK && ret_code != LTTNG_ERR_TRIGGER_EXISTS) { |
268 | printf("error: %s\n", lttng_strerror(-ret_code)); | |
434f8068 JR |
269 | ret = 1; |
270 | goto end; | |
271 | } | |
272 | ||
273 | nc_status = lttng_notification_channel_subscribe(notification_channel, condition); | |
274 | if (nc_status != LTTNG_NOTIFICATION_CHANNEL_STATUS_OK) { | |
275 | printf("error: Could not subscribe\n"); | |
276 | ret = 1; | |
277 | goto end; | |
278 | } | |
279 | ||
280 | /* Tell outside process that the client is ready */ | |
281 | printf("sync: ready\n"); | |
282 | ||
283 | for (;;) { | |
284 | struct lttng_notification *notification; | |
285 | enum lttng_notification_channel_status status; | |
286 | const struct lttng_evaluation *notification_evaluation; | |
287 | const struct lttng_condition *notification_condition; | |
288 | ||
289 | if (nr_notifications == nr_expected_notifications) { | |
290 | ret = 0; | |
291 | goto end; | |
292 | } | |
293 | /* Receive the next notification. */ | |
294 | status = lttng_notification_channel_get_next_notification( | |
295 | notification_channel, | |
296 | ¬ification); | |
297 | ||
298 | switch (status) { | |
299 | case LTTNG_NOTIFICATION_CHANNEL_STATUS_OK: | |
300 | break; | |
301 | case LTTNG_NOTIFICATION_CHANNEL_STATUS_NOTIFICATIONS_DROPPED: | |
302 | ret = 1; | |
303 | printf("error: No drop should be observed during this test app\n"); | |
304 | goto end; | |
305 | case LTTNG_NOTIFICATION_CHANNEL_STATUS_CLOSED: | |
306 | /* | |
307 | * The notification channel has been closed by the | |
308 | * session daemon. This is typically caused by a session | |
309 | * daemon shutting down (cleanly or because of a crash). | |
310 | */ | |
311 | printf("error: Notification channel was closed\n"); | |
312 | ret = 1; | |
313 | goto end; | |
314 | default: | |
315 | /* Unhandled conditions / errors. */ | |
091fa780 | 316 | printf("error: Unknown notification channel status (%d) \n", status); |
434f8068 JR |
317 | ret = 1; |
318 | goto end; | |
319 | } | |
320 | ||
321 | notification_condition = lttng_notification_get_condition(notification); | |
322 | notification_evaluation = lttng_notification_get_evaluation(notification); | |
323 | ||
324 | ret = handle_condition(notification_condition, notification_evaluation); | |
325 | nr_notifications++; | |
326 | ||
327 | lttng_notification_destroy(notification); | |
328 | if (ret != 0) { | |
329 | goto end; | |
330 | } | |
331 | } | |
332 | end: | |
333 | if (trigger) { | |
334 | lttng_unregister_trigger(trigger); | |
335 | } | |
eff748d0 JR |
336 | if (lttng_notification_channel_unsubscribe(notification_channel, condition)) { |
337 | printf("error: channel unsubscribe error\n"); | |
338 | } | |
434f8068 JR |
339 | lttng_trigger_destroy(trigger); |
340 | lttng_condition_destroy(condition); | |
341 | lttng_action_destroy(action); | |
342 | lttng_notification_channel_destroy(notification_channel); | |
343 | printf("exit: %d\n", ret); | |
344 | return ret; | |
345 | } | |
346 | ||
347 | int handle_condition( | |
348 | const struct lttng_condition *condition, | |
349 | const struct lttng_evaluation *evaluation) | |
350 | { | |
351 | int ret = 0; | |
352 | const char *string_low = "low"; | |
353 | const char *string_high = "high"; | |
354 | const char *string_condition_type = NULL; | |
355 | const char *condition_session_name = NULL; | |
356 | const char *condition_channel_name = NULL; | |
357 | enum lttng_condition_type condition_type; | |
358 | enum lttng_domain_type condition_domain_type; | |
359 | double buffer_usage_ratio; | |
360 | uint64_t buffer_usage_bytes; | |
361 | ||
362 | condition_type = lttng_condition_get_type(condition); | |
363 | ||
364 | if (condition_type != buffer_usage_type) { | |
365 | ret = 1; | |
366 | printf("error: condition type and buffer usage type are not the same\n"); | |
367 | goto end; | |
368 | } | |
369 | ||
370 | /* Fetch info to test */ | |
eff748d0 | 371 | ret = lttng_condition_buffer_usage_get_session_name(condition, |
434f8068 | 372 | &condition_session_name); |
eff748d0 JR |
373 | if (ret) { |
374 | printf("error: session name could not be fetched\n"); | |
375 | ret = 1; | |
376 | goto end; | |
377 | } | |
378 | ret = lttng_condition_buffer_usage_get_channel_name(condition, | |
434f8068 | 379 | &condition_channel_name); |
eff748d0 JR |
380 | if (ret) { |
381 | printf("error: channel name could not be fetched\n"); | |
382 | ret = 1; | |
383 | goto end; | |
384 | } | |
385 | ret = lttng_condition_buffer_usage_get_domain_type(condition, | |
434f8068 | 386 | &condition_domain_type); |
eff748d0 JR |
387 | if (ret) { |
388 | printf("error: domain type could not be fetched\n"); | |
389 | ret = 1; | |
390 | goto end; | |
391 | } | |
434f8068 JR |
392 | |
393 | if (strcmp(condition_session_name, session_name) != 0) { | |
394 | printf("error: session name differs\n"); | |
395 | ret = 1; | |
396 | goto end; | |
397 | } | |
398 | ||
399 | if (strcmp(condition_channel_name, channel_name) != 0) { | |
400 | printf("error: channel name differs\n"); | |
401 | ret = 1; | |
402 | goto end; | |
403 | } | |
404 | ||
405 | if (condition_domain_type != domain_type) { | |
406 | printf("error: domain type differs\n"); | |
407 | ret = 1; | |
408 | goto end; | |
409 | } | |
410 | ||
411 | if (is_threshold_ratio) { | |
412 | lttng_evaluation_buffer_usage_get_usage_ratio( | |
413 | evaluation, &buffer_usage_ratio); | |
414 | switch (condition_type) { | |
415 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
416 | if (buffer_usage_ratio > threshold_ratio) { | |
417 | printf("error: buffer usage ratio is bigger than set threshold ratio\n"); | |
418 | ret = 1; | |
419 | goto end; | |
420 | } | |
421 | break; | |
422 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
423 | if (buffer_usage_ratio < threshold_ratio) { | |
424 | printf("error: buffer usage ratio is lower than set threshold ratio\n"); | |
425 | ret = 1; | |
426 | goto end; | |
427 | } | |
428 | break; | |
429 | default: | |
430 | printf("error: Unknown condition type\n"); | |
431 | ret = 1; | |
432 | goto end; | |
433 | } | |
434 | } else { | |
435 | lttng_evaluation_buffer_usage_get_usage( | |
436 | evaluation, &buffer_usage_bytes); | |
437 | switch (condition_type) { | |
438 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
439 | if (buffer_usage_bytes > threshold_bytes) { | |
440 | printf("error: buffer usage ratio is bigger than set threshold bytes\n"); | |
441 | ret = 1; | |
442 | goto end; | |
443 | } | |
444 | break; | |
445 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
446 | if (buffer_usage_bytes < threshold_bytes) { | |
447 | printf("error: buffer usage ratio is lower than set threshold bytes\n"); | |
448 | ret = 1; | |
449 | goto end; | |
450 | } | |
451 | break; | |
452 | default: | |
453 | printf("error: Unknown condition type\n"); | |
454 | ret = 1; | |
455 | goto end; | |
456 | } | |
457 | } | |
458 | ||
459 | switch (condition_type) { | |
460 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
461 | string_condition_type = string_low; | |
462 | break; | |
463 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
464 | string_condition_type = string_high; | |
465 | break; | |
466 | default: | |
467 | printf("error: Unknown condition type\n"); | |
468 | ret = 1; | |
469 | goto end; | |
470 | } | |
471 | ||
472 | printf("notification: %s %d\n", string_condition_type, nr_notifications); | |
473 | end: | |
474 | return ret; | |
475 | } |