Commit | Line | Data |
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f3bc2010 JG |
1 | /* |
2 | * lttng-live.c | |
3 | * | |
4 | * Babeltrace CTF LTTng-live Client Component | |
5 | * | |
6 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
7cdc2bab | 7 | * Copyright 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
f3bc2010 JG |
8 | * |
9 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
10 | * | |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice shall be included in | |
19 | * all copies or substantial portions of the Software. | |
20 | * | |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
27 | * SOFTWARE. | |
28 | */ | |
29 | ||
7cdc2bab | 30 | #include <babeltrace/ctf-ir/packet.h> |
b2e0c907 | 31 | #include <babeltrace/graph/component-source.h> |
7cdc2bab MD |
32 | #include <babeltrace/graph/private-port.h> |
33 | #include <babeltrace/graph/port.h> | |
34 | #include <babeltrace/graph/private-component.h> | |
35 | #include <babeltrace/graph/private-component-source.h> | |
36 | #include <babeltrace/graph/private-notification-iterator.h> | |
37 | #include <babeltrace/graph/notification-stream.h> | |
38 | #include <babeltrace/graph/notification-packet.h> | |
39 | #include <babeltrace/graph/notification-event.h> | |
40 | #include <babeltrace/graph/notification-heap.h> | |
41 | #include <babeltrace/graph/notification-iterator.h> | |
42 | #include <babeltrace/graph/notification-inactivity.h> | |
43 | #include <babeltrace/compiler-internal.h> | |
44 | #include <inttypes.h> | |
45 | #include <glib.h> | |
46 | #include <assert.h> | |
47 | #include <unistd.h> | |
7d61fa8e | 48 | #include <plugins-common.h> |
f3bc2010 | 49 | |
087bc060 MD |
50 | #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-LIVE" |
51 | ||
7cdc2bab MD |
52 | #include "lttng-live-internal.h" |
53 | #include "data-stream.h" | |
54 | #include "metadata.h" | |
55 | ||
7cdc2bab | 56 | #define MAX_QUERY_SIZE (256*1024) |
7cdc2bab | 57 | |
087bc060 | 58 | #define print_dbg(fmt, ...) BT_LOGD(fmt, ## __VA_ARGS__) |
7cdc2bab MD |
59 | |
60 | static const char *print_state(struct lttng_live_stream_iterator *s) | |
61 | { | |
62 | switch (s->state) { | |
63 | case LTTNG_LIVE_STREAM_ACTIVE_NO_DATA: | |
64 | return "ACTIVE_NO_DATA"; | |
65 | case LTTNG_LIVE_STREAM_QUIESCENT_NO_DATA: | |
66 | return "QUIESCENT_NO_DATA"; | |
67 | case LTTNG_LIVE_STREAM_QUIESCENT: | |
68 | return "QUIESCENT"; | |
69 | case LTTNG_LIVE_STREAM_ACTIVE_DATA: | |
70 | return "ACTIVE_DATA"; | |
71 | case LTTNG_LIVE_STREAM_EOF: | |
72 | return "EOF"; | |
73 | default: | |
74 | return "ERROR"; | |
75 | } | |
76 | } | |
7cdc2bab MD |
77 | |
78 | #define print_stream_state(stream) \ | |
79 | print_dbg("stream %s state %s last_inact_ts %" PRId64 " cur_inact_ts %" PRId64, \ | |
80 | bt_port_get_name(bt_port_from_private_port(stream->port)), \ | |
81 | print_state(stream), stream->last_returned_inactivity_timestamp, \ | |
82 | stream->current_inactivity_timestamp) | |
83 | ||
d3e4dcd8 | 84 | BT_HIDDEN |
087bc060 | 85 | int bt_lttng_live_log_level = BT_LOG_NONE; |
7cdc2bab MD |
86 | |
87 | BT_HIDDEN | |
88 | int lttng_live_add_port(struct lttng_live_component *lttng_live, | |
89 | struct lttng_live_stream_iterator *stream_iter) | |
90 | { | |
91 | int ret; | |
92 | struct bt_private_port *private_port; | |
93 | char name[STREAM_NAME_MAX_LEN]; | |
94 | ||
95 | ret = sprintf(name, STREAM_NAME_PREFIX "%" PRIu64, stream_iter->viewer_stream_id); | |
96 | assert(ret > 0); | |
97 | strcpy(stream_iter->name, name); | |
98 | private_port = bt_private_component_source_add_output_private_port( | |
99 | lttng_live->private_component, name, stream_iter); | |
100 | if (!private_port) { | |
101 | return -1; | |
102 | } | |
087bc060 | 103 | BT_LOGI("Added port %s", name); |
7cdc2bab MD |
104 | |
105 | if (lttng_live->no_stream_port) { | |
106 | ret = bt_private_port_remove_from_component(lttng_live->no_stream_port); | |
107 | if (ret) { | |
108 | return -1; | |
109 | } | |
110 | BT_PUT(lttng_live->no_stream_port); | |
111 | lttng_live->no_stream_iter->port = NULL; | |
112 | } | |
113 | stream_iter->port = private_port; | |
114 | return 0; | |
115 | } | |
116 | ||
117 | BT_HIDDEN | |
118 | int lttng_live_remove_port(struct lttng_live_component *lttng_live, | |
119 | struct bt_private_port *port) | |
120 | { | |
121 | struct bt_component *component; | |
122 | int64_t nr_ports; | |
123 | int ret; | |
124 | ||
125 | component = bt_component_from_private_component(lttng_live->private_component); | |
126 | nr_ports = bt_component_source_get_output_port_count(component); | |
127 | if (nr_ports < 0) { | |
128 | return -1; | |
129 | } | |
130 | BT_PUT(component); | |
131 | if (nr_ports == 1) { | |
132 | assert(!lttng_live->no_stream_port); | |
133 | lttng_live->no_stream_port = | |
134 | bt_private_component_source_add_output_private_port(lttng_live->private_component, | |
135 | "no-stream", lttng_live->no_stream_iter); | |
136 | if (!lttng_live->no_stream_port) { | |
137 | return -1; | |
138 | } | |
139 | lttng_live->no_stream_iter->port = lttng_live->no_stream_port; | |
140 | } | |
141 | ret = bt_private_port_remove_from_component(port); | |
142 | if (ret) { | |
143 | return -1; | |
144 | } | |
145 | return 0; | |
146 | } | |
147 | ||
148 | static | |
149 | struct lttng_live_trace *lttng_live_find_trace(struct lttng_live_session *session, | |
150 | uint64_t trace_id) | |
d3e4dcd8 | 151 | { |
7cdc2bab MD |
152 | struct lttng_live_trace *trace; |
153 | ||
154 | bt_list_for_each_entry(trace, &session->traces, node) { | |
155 | if (trace->id == trace_id) { | |
156 | return trace; | |
157 | } | |
158 | } | |
d3eb6e8f PP |
159 | return NULL; |
160 | } | |
161 | ||
7cdc2bab MD |
162 | static |
163 | void lttng_live_destroy_trace(struct bt_object *obj) | |
164 | { | |
165 | struct lttng_live_trace *trace = container_of(obj, struct lttng_live_trace, obj); | |
166 | ||
087bc060 | 167 | BT_LOGI("Destroy trace"); |
7cdc2bab MD |
168 | assert(bt_list_empty(&trace->streams)); |
169 | bt_list_del(&trace->node); | |
170 | lttng_live_metadata_fini(trace); | |
171 | BT_PUT(trace->cc_prio_map); | |
172 | g_free(trace); | |
173 | } | |
174 | ||
175 | static | |
176 | struct lttng_live_trace *lttng_live_create_trace(struct lttng_live_session *session, | |
177 | uint64_t trace_id) | |
178 | { | |
179 | struct lttng_live_trace *trace = NULL; | |
180 | ||
181 | trace = g_new0(struct lttng_live_trace, 1); | |
182 | if (!trace) { | |
183 | goto error; | |
184 | } | |
185 | trace->session = session; | |
186 | trace->id = trace_id; | |
187 | BT_INIT_LIST_HEAD(&trace->streams); | |
188 | trace->new_metadata_needed = true; | |
189 | bt_list_add(&trace->node, &session->traces); | |
190 | bt_object_init(&trace->obj, lttng_live_destroy_trace); | |
087bc060 | 191 | BT_LOGI("Create trace"); |
7cdc2bab MD |
192 | goto end; |
193 | error: | |
194 | g_free(trace); | |
195 | trace = NULL; | |
196 | end: | |
197 | return trace; | |
198 | } | |
199 | ||
200 | BT_HIDDEN | |
201 | struct lttng_live_trace *lttng_live_ref_trace(struct lttng_live_session *session, | |
202 | uint64_t trace_id) | |
203 | { | |
204 | struct lttng_live_trace *trace; | |
205 | ||
206 | trace = lttng_live_find_trace(session, trace_id); | |
207 | if (trace) { | |
208 | bt_get(trace); | |
209 | return trace; | |
210 | } | |
211 | return lttng_live_create_trace(session, trace_id); | |
212 | } | |
213 | ||
214 | BT_HIDDEN | |
215 | void lttng_live_unref_trace(struct lttng_live_trace *trace) | |
216 | { | |
217 | bt_put(trace); | |
218 | } | |
219 | ||
220 | static | |
221 | void lttng_live_close_trace_streams(struct lttng_live_trace *trace) | |
222 | { | |
223 | struct lttng_live_stream_iterator *stream, *s; | |
224 | ||
225 | bt_list_for_each_entry_safe(stream, s, &trace->streams, node) { | |
226 | lttng_live_stream_iterator_destroy(stream); | |
227 | } | |
228 | lttng_live_metadata_fini(trace); | |
229 | } | |
230 | ||
231 | BT_HIDDEN | |
232 | int lttng_live_add_session(struct lttng_live_component *lttng_live, uint64_t session_id) | |
233 | { | |
234 | int ret = 0; | |
235 | struct lttng_live_session *s; | |
236 | ||
237 | s = g_new0(struct lttng_live_session, 1); | |
238 | if (!s) { | |
239 | goto error; | |
240 | } | |
241 | ||
242 | s->id = session_id; | |
243 | BT_INIT_LIST_HEAD(&s->traces); | |
244 | s->lttng_live = lttng_live; | |
245 | s->new_streams_needed = true; | |
246 | ||
087bc060 | 247 | BT_LOGI("Reading from session %" PRIu64, s->id); |
7cdc2bab MD |
248 | bt_list_add(&s->node, <tng_live->sessions); |
249 | goto end; | |
250 | error: | |
087bc060 | 251 | BT_LOGE("Error adding session"); |
7cdc2bab MD |
252 | g_free(s); |
253 | ret = -1; | |
254 | end: | |
255 | return ret; | |
256 | } | |
257 | ||
258 | static | |
259 | void lttng_live_destroy_session(struct lttng_live_session *session) | |
260 | { | |
261 | struct lttng_live_trace *trace, *t; | |
262 | ||
087bc060 | 263 | BT_LOGI("Destroy session"); |
7cdc2bab MD |
264 | if (session->id != -1ULL) { |
265 | if (lttng_live_detach_session(session)) { | |
266 | /* Old relayd cannot detach sessions. */ | |
087bc060 | 267 | BT_LOGD("Unable to detach session %" PRIu64, |
7cdc2bab MD |
268 | session->id); |
269 | } | |
270 | session->id = -1ULL; | |
271 | } | |
272 | bt_list_for_each_entry_safe(trace, t, &session->traces, node) { | |
273 | lttng_live_close_trace_streams(trace); | |
274 | } | |
275 | bt_list_del(&session->node); | |
276 | g_free(session); | |
277 | } | |
278 | ||
279 | BT_HIDDEN | |
280 | void lttng_live_iterator_finalize(struct bt_private_notification_iterator *it) | |
281 | { | |
282 | struct lttng_live_stream_iterator_generic *s = | |
283 | bt_private_notification_iterator_get_user_data(it); | |
284 | ||
285 | switch (s->type) { | |
286 | case LIVE_STREAM_TYPE_NO_STREAM: | |
287 | { | |
288 | /* Leave no_stream_iter in place when port is removed. */ | |
289 | break; | |
290 | } | |
291 | case LIVE_STREAM_TYPE_STREAM: | |
292 | { | |
293 | struct lttng_live_stream_iterator *stream_iter = | |
294 | container_of(s, struct lttng_live_stream_iterator, p); | |
295 | ||
296 | lttng_live_stream_iterator_destroy(stream_iter); | |
297 | break; | |
298 | } | |
299 | } | |
300 | } | |
301 | ||
302 | static | |
303 | enum bt_ctf_lttng_live_iterator_status lttng_live_iterator_next_check_stream_state( | |
304 | struct lttng_live_component *lttng_live, | |
305 | struct lttng_live_stream_iterator *lttng_live_stream) | |
306 | { | |
307 | switch (lttng_live_stream->state) { | |
308 | case LTTNG_LIVE_STREAM_QUIESCENT: | |
309 | case LTTNG_LIVE_STREAM_ACTIVE_DATA: | |
310 | break; | |
311 | case LTTNG_LIVE_STREAM_ACTIVE_NO_DATA: | |
312 | /* Invalid state. */ | |
087bc060 MD |
313 | BT_LOGF("Unexpected stream state \"ACTIVE_NO_DATA\""); |
314 | abort(); | |
7cdc2bab MD |
315 | case LTTNG_LIVE_STREAM_QUIESCENT_NO_DATA: |
316 | /* Invalid state. */ | |
087bc060 MD |
317 | BT_LOGF("Unexpected stream state \"QUIESCENT_NO_DATA\""); |
318 | abort(); | |
7cdc2bab MD |
319 | case LTTNG_LIVE_STREAM_EOF: |
320 | break; | |
321 | } | |
322 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
323 | } | |
324 | ||
325 | /* | |
326 | * For active no data stream, fetch next data. It can be either: | |
327 | * - quiescent: need to put it in the prio heap at quiescent end | |
328 | * timestamp, | |
329 | * - have data: need to wire up first event into the prio heap, | |
330 | * - have no data on this stream at this point: need to retry (AGAIN) or | |
331 | * return EOF. | |
332 | */ | |
333 | static | |
334 | enum bt_ctf_lttng_live_iterator_status lttng_live_iterator_next_handle_one_no_data_stream( | |
335 | struct lttng_live_component *lttng_live, | |
336 | struct lttng_live_stream_iterator *lttng_live_stream) | |
337 | { | |
338 | enum bt_ctf_lttng_live_iterator_status ret = | |
339 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
340 | struct packet_index index; | |
341 | enum lttng_live_stream_state orig_state = lttng_live_stream->state; | |
342 | ||
343 | if (lttng_live_stream->trace->new_metadata_needed) { | |
344 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; | |
345 | goto end; | |
346 | } | |
347 | if (lttng_live_stream->trace->session->new_streams_needed) { | |
348 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; | |
349 | goto end; | |
350 | } | |
351 | if (lttng_live_stream->state != LTTNG_LIVE_STREAM_ACTIVE_NO_DATA | |
352 | && lttng_live_stream->state != LTTNG_LIVE_STREAM_QUIESCENT_NO_DATA) { | |
353 | goto end; | |
354 | } | |
355 | ret = lttng_live_get_next_index(lttng_live, lttng_live_stream, &index); | |
356 | if (ret != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
357 | goto end; | |
358 | } | |
359 | assert(lttng_live_stream->state != LTTNG_LIVE_STREAM_EOF); | |
360 | if (lttng_live_stream->state == LTTNG_LIVE_STREAM_QUIESCENT) { | |
361 | if (orig_state == LTTNG_LIVE_STREAM_QUIESCENT_NO_DATA | |
362 | && lttng_live_stream->last_returned_inactivity_timestamp == | |
363 | lttng_live_stream->current_inactivity_timestamp) { | |
364 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
365 | print_stream_state(lttng_live_stream); | |
366 | } else { | |
367 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; | |
368 | } | |
369 | goto end; | |
370 | } | |
371 | lttng_live_stream->base_offset = index.offset; | |
372 | lttng_live_stream->offset = index.offset; | |
373 | lttng_live_stream->len = index.packet_size / CHAR_BIT; | |
374 | end: | |
375 | if (ret == BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
376 | ret = lttng_live_iterator_next_check_stream_state( | |
377 | lttng_live, lttng_live_stream); | |
378 | } | |
379 | return ret; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Creation of the notification requires the ctf trace to be created | |
384 | * beforehand, but the live protocol gives us all streams (including | |
385 | * metadata) at once. So we split it in three steps: getting streams, | |
386 | * getting metadata (which creates the ctf trace), and then creating the | |
387 | * per-stream notifications. | |
388 | */ | |
389 | static | |
390 | enum bt_ctf_lttng_live_iterator_status lttng_live_get_session( | |
391 | struct lttng_live_component *lttng_live, | |
392 | struct lttng_live_session *session) | |
393 | { | |
394 | enum bt_ctf_lttng_live_iterator_status status; | |
395 | struct lttng_live_trace *trace, *t; | |
396 | ||
397 | if (lttng_live_attach_session(session)) { | |
398 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
399 | } | |
400 | status = lttng_live_get_new_streams(session); | |
401 | if (status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK && | |
402 | status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END) { | |
403 | return status; | |
404 | } | |
405 | bt_list_for_each_entry_safe(trace, t, &session->traces, node) { | |
406 | status = lttng_live_metadata_update(trace); | |
407 | if (status == BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END) { | |
408 | int retval; | |
409 | ||
410 | retval = bt_ctf_trace_set_is_static(trace->trace); | |
411 | assert(!retval); | |
412 | } else if (status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
413 | return status; | |
414 | } | |
415 | } | |
416 | return lttng_live_lazy_notif_init(session); | |
417 | } | |
418 | ||
419 | BT_HIDDEN | |
420 | void lttng_live_need_new_streams(struct lttng_live_component *lttng_live) | |
421 | { | |
422 | struct lttng_live_session *session; | |
423 | ||
424 | bt_list_for_each_entry(session, <tng_live->sessions, node) { | |
425 | session->new_streams_needed = true; | |
426 | } | |
427 | } | |
428 | ||
429 | static | |
430 | void lttng_live_force_new_streams_and_metadata(struct lttng_live_component *lttng_live) | |
431 | { | |
432 | struct lttng_live_session *session; | |
433 | ||
434 | bt_list_for_each_entry(session, <tng_live->sessions, node) { | |
435 | struct lttng_live_trace *trace; | |
436 | ||
437 | session->new_streams_needed = true; | |
438 | bt_list_for_each_entry(trace, &session->traces, node) { | |
439 | trace->new_metadata_needed = true; | |
440 | } | |
441 | } | |
442 | } | |
443 | ||
444 | static | |
445 | enum bt_notification_iterator_status lttng_live_iterator_next_handle_new_streams_and_metadata( | |
446 | struct lttng_live_component *lttng_live) | |
447 | { | |
448 | enum bt_ctf_lttng_live_iterator_status ret = | |
449 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
450 | unsigned int nr_sessions_opened = 0; | |
451 | struct lttng_live_session *session, *s; | |
452 | ||
453 | bt_list_for_each_entry_safe(session, s, <tng_live->sessions, node) { | |
454 | if (session->closed && bt_list_empty(&session->traces)) { | |
455 | lttng_live_destroy_session(session); | |
456 | } | |
457 | } | |
458 | /* | |
459 | * Currently, when there are no sessions, we quit immediately. | |
460 | * We may want to add a component parameter to keep trying until | |
461 | * we get data in the future. | |
462 | * Also, in a remotely distant future, we could add a "new | |
463 | * session" flag to the protocol, which would tell us that we | |
464 | * need to query for new sessions even though we have sessions | |
465 | * currently ongoing. | |
466 | */ | |
467 | if (bt_list_empty(<tng_live->sessions)) { | |
468 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
469 | goto end; | |
470 | } | |
471 | bt_list_for_each_entry(session, <tng_live->sessions, node) { | |
472 | ret = lttng_live_get_session(lttng_live, session); | |
473 | switch (ret) { | |
474 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK: | |
475 | break; | |
476 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END: | |
477 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
478 | break; | |
479 | default: | |
480 | goto end; | |
481 | } | |
482 | if (!session->closed) { | |
483 | nr_sessions_opened++; | |
484 | } | |
485 | } | |
486 | end: | |
487 | if (ret == BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK && !nr_sessions_opened) { | |
488 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
489 | } | |
490 | return ret; | |
491 | } | |
492 | ||
493 | static | |
494 | enum bt_ctf_lttng_live_iterator_status emit_inactivity_notification( | |
495 | struct lttng_live_component *lttng_live, | |
496 | struct lttng_live_stream_iterator *lttng_live_stream, | |
497 | struct bt_notification **notification, | |
498 | uint64_t timestamp) | |
499 | { | |
500 | enum bt_ctf_lttng_live_iterator_status ret = | |
501 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
502 | struct lttng_live_trace *trace; | |
503 | struct bt_ctf_clock_class *clock_class = NULL; | |
504 | struct bt_ctf_clock_value *clock_value = NULL; | |
505 | struct bt_notification *notif = NULL; | |
506 | int retval; | |
507 | ||
508 | trace = lttng_live_stream->trace; | |
509 | if (!trace) { | |
510 | goto error; | |
511 | } | |
512 | clock_class = bt_clock_class_priority_map_get_clock_class_by_index(trace->cc_prio_map, 0); | |
513 | if (!clock_class) { | |
514 | goto error; | |
515 | } | |
516 | clock_value = bt_ctf_clock_value_create(clock_class, timestamp); | |
517 | if (!clock_value) { | |
518 | goto error; | |
519 | } | |
520 | notif = bt_notification_inactivity_create(trace->cc_prio_map); | |
521 | if (!notif) { | |
522 | goto error; | |
523 | } | |
524 | retval = bt_notification_inactivity_set_clock_value(notif, clock_value); | |
525 | if (retval) { | |
526 | goto error; | |
527 | } | |
528 | *notification = notif; | |
529 | end: | |
530 | bt_put(clock_value); | |
531 | bt_put(clock_class); | |
532 | return ret; | |
533 | ||
534 | error: | |
535 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
536 | bt_put(notif); | |
537 | goto end; | |
538 | } | |
539 | ||
540 | static | |
541 | enum bt_ctf_lttng_live_iterator_status lttng_live_iterator_next_handle_one_quiescent_stream( | |
542 | struct lttng_live_component *lttng_live, | |
543 | struct lttng_live_stream_iterator *lttng_live_stream, | |
544 | struct bt_notification **notification) | |
545 | { | |
546 | enum bt_ctf_lttng_live_iterator_status ret = | |
547 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
548 | struct bt_ctf_clock_class *clock_class = NULL; | |
549 | struct bt_ctf_clock_value *clock_value = NULL; | |
550 | ||
551 | if (lttng_live_stream->state != LTTNG_LIVE_STREAM_QUIESCENT) { | |
552 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
553 | } | |
554 | ||
555 | if (lttng_live_stream->current_inactivity_timestamp == | |
556 | lttng_live_stream->last_returned_inactivity_timestamp) { | |
557 | lttng_live_stream->state = LTTNG_LIVE_STREAM_QUIESCENT_NO_DATA; | |
558 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; | |
559 | goto end; | |
560 | } | |
561 | ||
562 | ret = emit_inactivity_notification(lttng_live, lttng_live_stream, notification, | |
563 | (uint64_t) lttng_live_stream->current_inactivity_timestamp); | |
564 | ||
565 | lttng_live_stream->last_returned_inactivity_timestamp = | |
566 | lttng_live_stream->current_inactivity_timestamp; | |
567 | end: | |
568 | bt_put(clock_value); | |
569 | bt_put(clock_class); | |
570 | return ret; | |
571 | } | |
572 | ||
573 | static | |
574 | enum bt_ctf_lttng_live_iterator_status lttng_live_iterator_next_handle_one_active_data_stream( | |
575 | struct lttng_live_component *lttng_live, | |
576 | struct lttng_live_stream_iterator *lttng_live_stream, | |
577 | struct bt_notification **notification) | |
578 | { | |
579 | enum bt_ctf_lttng_live_iterator_status ret = | |
580 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
581 | enum bt_ctf_notif_iter_status status; | |
582 | struct lttng_live_session *session; | |
583 | ||
584 | bt_list_for_each_entry(session, <tng_live->sessions, node) { | |
585 | struct lttng_live_trace *trace; | |
586 | ||
587 | if (session->new_streams_needed) { | |
588 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; | |
589 | } | |
590 | bt_list_for_each_entry(trace, &session->traces, node) { | |
591 | if (trace->new_metadata_needed) { | |
592 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; | |
593 | } | |
594 | } | |
595 | } | |
596 | ||
597 | if (lttng_live_stream->state != LTTNG_LIVE_STREAM_ACTIVE_DATA) { | |
598 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
599 | } | |
600 | if (lttng_live_stream->packet_end_notif_queue) { | |
601 | *notification = lttng_live_stream->packet_end_notif_queue; | |
602 | lttng_live_stream->packet_end_notif_queue = NULL; | |
603 | status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
604 | } else { | |
605 | status = bt_ctf_notif_iter_get_next_notification( | |
606 | lttng_live_stream->notif_iter, | |
607 | lttng_live_stream->trace->cc_prio_map, | |
608 | notification); | |
609 | if (status == BT_CTF_NOTIF_ITER_STATUS_OK) { | |
610 | /* | |
611 | * Consider empty packets as inactivity. | |
612 | */ | |
613 | if (bt_notification_get_type(*notification) == BT_NOTIFICATION_TYPE_PACKET_END) { | |
614 | lttng_live_stream->packet_end_notif_queue = *notification; | |
615 | *notification = NULL; | |
616 | return emit_inactivity_notification(lttng_live, | |
617 | lttng_live_stream, notification, | |
618 | lttng_live_stream->current_packet_end_timestamp); | |
619 | } | |
620 | } | |
621 | } | |
622 | switch (status) { | |
623 | case BT_CTF_NOTIF_ITER_STATUS_EOF: | |
624 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
625 | break; | |
626 | case BT_CTF_NOTIF_ITER_STATUS_OK: | |
627 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
628 | break; | |
629 | case BT_CTF_NOTIF_ITER_STATUS_AGAIN: | |
630 | /* | |
631 | * Continue immediately (end of packet). The next | |
632 | * get_index may return AGAIN to delay the following | |
633 | * attempt. | |
634 | */ | |
635 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; | |
636 | break; | |
637 | case BT_CTF_NOTIF_ITER_STATUS_INVAL: | |
638 | /* No argument provided by the user, so don't return INVAL. */ | |
639 | case BT_CTF_NOTIF_ITER_STATUS_ERROR: | |
640 | default: | |
641 | ret = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
642 | break; | |
643 | } | |
644 | return ret; | |
645 | } | |
646 | ||
647 | /* | |
648 | * helper function: | |
649 | * handle_no_data_streams() | |
650 | * retry: | |
651 | * - for each ACTIVE_NO_DATA stream: | |
652 | * - query relayd for stream data, or quiescence info. | |
653 | * - if need metadata, get metadata, goto retry. | |
654 | * - if new stream, get new stream as ACTIVE_NO_DATA, goto retry | |
655 | * - if quiescent, move to QUIESCENT streams | |
656 | * - if fetched data, move to ACTIVE_DATA streams | |
657 | * (at this point each stream either has data, or is quiescent) | |
658 | * | |
659 | * | |
660 | * iterator_next: | |
661 | * handle_new_streams_and_metadata() | |
662 | * - query relayd for known streams, add them as ACTIVE_NO_DATA | |
663 | * - query relayd for metadata | |
664 | * | |
665 | * call handle_active_no_data_streams() | |
666 | * | |
667 | * handle_quiescent_streams() | |
668 | * - if at least one stream is ACTIVE_DATA: | |
669 | * - peek stream event with lowest timestamp -> next_ts | |
670 | * - for each quiescent stream | |
671 | * - if next_ts >= quiescent end | |
672 | * - set state to ACTIVE_NO_DATA | |
673 | * - else | |
674 | * - for each quiescent stream | |
675 | * - set state to ACTIVE_NO_DATA | |
676 | * | |
677 | * call handle_active_no_data_streams() | |
678 | * | |
679 | * handle_active_data_streams() | |
680 | * - if at least one stream is ACTIVE_DATA: | |
681 | * - get stream event with lowest timestamp from heap | |
682 | * - make that stream event the current notification. | |
683 | * - move this stream heap position to its next event | |
684 | * - if we need to fetch data from relayd, move | |
685 | * stream to ACTIVE_NO_DATA. | |
686 | * - return OK | |
687 | * - return AGAIN | |
688 | * | |
689 | * end criterion: ctrl-c on client. If relayd exits or the session | |
690 | * closes on the relay daemon side, we keep on waiting for streams. | |
691 | * Eventually handle --end timestamp (also an end criterion). | |
692 | * | |
693 | * When disconnected from relayd: try to re-connect endlessly. | |
694 | */ | |
695 | static | |
696 | struct bt_notification_iterator_next_return lttng_live_iterator_next_stream( | |
697 | struct bt_private_notification_iterator *iterator, | |
698 | struct lttng_live_stream_iterator *stream_iter) | |
699 | { | |
700 | enum bt_ctf_lttng_live_iterator_status status; | |
701 | struct bt_notification_iterator_next_return next_return; | |
702 | struct lttng_live_component *lttng_live; | |
703 | ||
704 | lttng_live = stream_iter->trace->session->lttng_live; | |
705 | retry: | |
706 | print_stream_state(stream_iter); | |
707 | next_return.notification = NULL; | |
708 | status = lttng_live_iterator_next_handle_new_streams_and_metadata(lttng_live); | |
709 | if (status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
710 | goto end; | |
711 | } | |
712 | status = lttng_live_iterator_next_handle_one_no_data_stream( | |
713 | lttng_live, stream_iter); | |
714 | if (status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
715 | goto end; | |
716 | } | |
717 | status = lttng_live_iterator_next_handle_one_quiescent_stream( | |
718 | lttng_live, stream_iter, &next_return.notification); | |
719 | if (status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
720 | assert(next_return.notification == NULL); | |
721 | goto end; | |
722 | } | |
723 | if (next_return.notification) { | |
724 | goto end; | |
725 | } | |
726 | status = lttng_live_iterator_next_handle_one_active_data_stream(lttng_live, | |
727 | stream_iter, &next_return.notification); | |
728 | if (status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
729 | assert(next_return.notification == NULL); | |
730 | } | |
731 | ||
732 | end: | |
733 | switch (status) { | |
734 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE: | |
735 | print_dbg("continue"); | |
736 | goto retry; | |
737 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN: | |
738 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_AGAIN; | |
739 | print_dbg("again"); | |
740 | break; | |
741 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END: | |
742 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_END; | |
743 | print_dbg("end"); | |
744 | break; | |
745 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK: | |
746 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
747 | print_dbg("ok"); | |
748 | break; | |
749 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_INVAL: | |
750 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_INVALID; | |
751 | break; | |
752 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_NOMEM: | |
753 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; | |
754 | break; | |
755 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_UNSUPPORTED: | |
756 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED; | |
757 | break; | |
758 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR: | |
759 | default: /* fall-through */ | |
760 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
761 | break; | |
762 | } | |
763 | return next_return; | |
764 | } | |
765 | ||
766 | static | |
767 | struct bt_notification_iterator_next_return lttng_live_iterator_next_no_stream( | |
768 | struct bt_private_notification_iterator *iterator, | |
769 | struct lttng_live_no_stream_iterator *no_stream_iter) | |
770 | { | |
771 | enum bt_ctf_lttng_live_iterator_status status; | |
772 | struct bt_notification_iterator_next_return next_return; | |
773 | struct lttng_live_component *lttng_live; | |
774 | ||
775 | lttng_live = no_stream_iter->lttng_live; | |
776 | retry: | |
777 | lttng_live_force_new_streams_and_metadata(lttng_live); | |
778 | status = lttng_live_iterator_next_handle_new_streams_and_metadata(lttng_live); | |
779 | if (status != BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK) { | |
780 | goto end; | |
781 | } | |
782 | if (no_stream_iter->port) { | |
783 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
784 | } else { | |
785 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
786 | } | |
787 | end: | |
788 | switch (status) { | |
789 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_CONTINUE: | |
790 | goto retry; | |
791 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN: | |
792 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_AGAIN; | |
793 | break; | |
794 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END: | |
795 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_END; | |
796 | break; | |
797 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK: | |
798 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
799 | break; | |
800 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_INVAL: | |
801 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_INVALID; | |
802 | break; | |
803 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_NOMEM: | |
804 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; | |
805 | break; | |
806 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_UNSUPPORTED: | |
807 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED; | |
808 | break; | |
809 | case BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR: | |
810 | default: /* fall-through */ | |
811 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
812 | break; | |
813 | } | |
814 | return next_return; | |
815 | } | |
816 | ||
d3eb6e8f | 817 | BT_HIDDEN |
41a2b7ae | 818 | struct bt_notification_iterator_next_return lttng_live_iterator_next( |
890882ef | 819 | struct bt_private_notification_iterator *iterator) |
d3eb6e8f | 820 | { |
7cdc2bab MD |
821 | struct lttng_live_stream_iterator_generic *s = |
822 | bt_private_notification_iterator_get_user_data(iterator); | |
823 | struct bt_notification_iterator_next_return next_return; | |
824 | ||
825 | switch (s->type) { | |
826 | case LIVE_STREAM_TYPE_NO_STREAM: | |
827 | next_return = lttng_live_iterator_next_no_stream(iterator, | |
828 | container_of(s, struct lttng_live_no_stream_iterator, p)); | |
829 | break; | |
830 | case LIVE_STREAM_TYPE_STREAM: | |
831 | next_return = lttng_live_iterator_next_stream(iterator, | |
832 | container_of(s, struct lttng_live_stream_iterator, p)); | |
833 | break; | |
834 | default: | |
835 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
836 | break; | |
837 | } | |
838 | return next_return; | |
839 | } | |
41a2b7ae | 840 | |
7cdc2bab MD |
841 | BT_HIDDEN |
842 | enum bt_notification_iterator_status lttng_live_iterator_init( | |
843 | struct bt_private_notification_iterator *it, | |
844 | struct bt_private_port *port) | |
845 | { | |
846 | enum bt_notification_iterator_status ret = | |
847 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
848 | struct lttng_live_stream_iterator_generic *s; | |
7cdc2bab MD |
849 | |
850 | assert(it); | |
851 | ||
852 | s = bt_private_port_get_user_data(port); | |
853 | assert(s); | |
854 | switch (s->type) { | |
855 | case LIVE_STREAM_TYPE_NO_STREAM: | |
856 | { | |
857 | struct lttng_live_no_stream_iterator *no_stream_iter = | |
858 | container_of(s, struct lttng_live_no_stream_iterator, p); | |
7cdc2bab MD |
859 | ret = bt_private_notification_iterator_set_user_data(it, no_stream_iter); |
860 | if (ret) { | |
861 | goto error; | |
862 | } | |
863 | break; | |
864 | } | |
865 | case LIVE_STREAM_TYPE_STREAM: | |
866 | { | |
867 | struct lttng_live_stream_iterator *stream_iter = | |
868 | container_of(s, struct lttng_live_stream_iterator, p); | |
7cdc2bab MD |
869 | ret = bt_private_notification_iterator_set_user_data(it, stream_iter); |
870 | if (ret) { | |
871 | goto error; | |
872 | } | |
873 | break; | |
874 | } | |
875 | default: | |
876 | ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
877 | goto end; | |
878 | } | |
879 | ||
880 | end: | |
41a2b7ae | 881 | return ret; |
7cdc2bab MD |
882 | error: |
883 | if (bt_private_notification_iterator_set_user_data(it, NULL) | |
884 | != BT_NOTIFICATION_ITERATOR_STATUS_OK) { | |
087bc060 | 885 | BT_LOGE("Error setting private data to NULL"); |
7cdc2bab MD |
886 | } |
887 | goto end; | |
888 | } | |
889 | ||
890 | static | |
891 | struct bt_value *lttng_live_query_list_sessions(struct bt_component_class *comp_class, | |
892 | struct bt_value *params) | |
893 | { | |
894 | struct bt_value *url_value = NULL; | |
895 | struct bt_value *results = NULL; | |
896 | const char *url; | |
897 | struct bt_live_viewer_connection *viewer_connection = NULL; | |
898 | enum bt_value_status ret; | |
899 | ||
900 | url_value = bt_value_map_get(params, "url"); | |
901 | if (!url_value || bt_value_is_null(url_value) || !bt_value_is_string(url_value)) { | |
087bc060 | 902 | BT_LOGW("Mandatory \"url\" parameter missing"); |
7cdc2bab MD |
903 | goto error; |
904 | } | |
905 | ||
906 | ret = bt_value_string_get(url_value, &url); | |
907 | if (ret != BT_VALUE_STATUS_OK) { | |
087bc060 | 908 | BT_LOGW("\"url\" parameter is required to be a string value"); |
7cdc2bab MD |
909 | goto error; |
910 | } | |
911 | ||
912 | viewer_connection = bt_live_viewer_connection_create(url, stderr); | |
913 | if (!viewer_connection) { | |
914 | ret = BT_COMPONENT_STATUS_NOMEM; | |
915 | goto error; | |
916 | } | |
917 | ||
918 | results = bt_live_viewer_connection_list_sessions(viewer_connection); | |
919 | goto end; | |
920 | error: | |
921 | BT_PUT(results); | |
922 | end: | |
923 | if (viewer_connection) { | |
924 | bt_live_viewer_connection_destroy(viewer_connection); | |
925 | } | |
926 | BT_PUT(url_value); | |
927 | return results; | |
928 | } | |
929 | ||
930 | BT_HIDDEN | |
931 | struct bt_value *lttng_live_query(struct bt_component_class *comp_class, | |
932 | const char *object, struct bt_value *params) | |
933 | { | |
934 | if (strcmp(object, "sessions") == 0) { | |
935 | return lttng_live_query_list_sessions(comp_class, | |
936 | params); | |
937 | } | |
087bc060 | 938 | BT_LOGW("Unknown query object `%s`", object); |
7cdc2bab MD |
939 | return NULL; |
940 | } | |
941 | ||
942 | static | |
943 | void lttng_live_component_destroy_data(struct lttng_live_component *lttng_live) | |
944 | { | |
945 | int ret; | |
946 | struct lttng_live_session *session, *s; | |
947 | ||
948 | bt_list_for_each_entry_safe(session, s, <tng_live->sessions, node) { | |
949 | lttng_live_destroy_session(session); | |
950 | } | |
951 | BT_PUT(lttng_live->viewer_connection); | |
952 | if (lttng_live->url) { | |
953 | g_string_free(lttng_live->url, TRUE); | |
954 | } | |
955 | if (lttng_live->no_stream_port) { | |
956 | ret = bt_private_port_remove_from_component(lttng_live->no_stream_port); | |
957 | assert(!ret); | |
958 | BT_PUT(lttng_live->no_stream_port); | |
959 | } | |
960 | if (lttng_live->no_stream_iter) { | |
961 | g_free(lttng_live->no_stream_iter); | |
962 | } | |
963 | g_free(lttng_live); | |
964 | } | |
965 | ||
966 | BT_HIDDEN | |
967 | void lttng_live_component_finalize(struct bt_private_component *component) | |
968 | { | |
969 | void *data = bt_private_component_get_user_data(component); | |
970 | ||
971 | if (!data) { | |
972 | return; | |
973 | } | |
974 | lttng_live_component_destroy_data(data); | |
975 | } | |
976 | ||
977 | static | |
978 | struct lttng_live_component *lttng_live_component_create(struct bt_value *params, | |
979 | struct bt_private_component *private_component) | |
980 | { | |
981 | struct lttng_live_component *lttng_live; | |
982 | struct bt_value *value = NULL; | |
983 | const char *url; | |
984 | enum bt_value_status ret; | |
985 | ||
986 | lttng_live = g_new0(struct lttng_live_component, 1); | |
987 | if (!lttng_live) { | |
988 | goto end; | |
989 | } | |
7cdc2bab MD |
990 | /* TODO: make this an overridable parameter. */ |
991 | lttng_live->max_query_size = MAX_QUERY_SIZE; | |
992 | BT_INIT_LIST_HEAD(<tng_live->sessions); | |
993 | value = bt_value_map_get(params, "url"); | |
994 | if (!value || bt_value_is_null(value) || !bt_value_is_string(value)) { | |
087bc060 | 995 | BT_LOGW("Mandatory \"url\" parameter missing"); |
7cdc2bab MD |
996 | goto error; |
997 | } | |
998 | ret = bt_value_string_get(value, &url); | |
999 | if (ret != BT_VALUE_STATUS_OK) { | |
087bc060 | 1000 | BT_LOGW("\"url\" parameter is required to be a string value"); |
7cdc2bab MD |
1001 | goto error; |
1002 | } | |
1003 | lttng_live->url = g_string_new(url); | |
1004 | if (!lttng_live->url) { | |
1005 | goto error; | |
1006 | } | |
1007 | lttng_live->viewer_connection = | |
1008 | bt_live_viewer_connection_create(lttng_live->url->str, | |
1009 | stderr); | |
1010 | if (!lttng_live->viewer_connection) { | |
1011 | ret = BT_COMPONENT_STATUS_NOMEM; | |
1012 | goto error; | |
1013 | } | |
1014 | if (lttng_live_create_viewer_session(lttng_live)) { | |
1015 | ret = BT_COMPONENT_STATUS_ERROR; | |
1016 | goto error; | |
1017 | } | |
1018 | lttng_live->private_component = private_component; | |
1019 | ||
1020 | goto end; | |
1021 | ||
1022 | error: | |
1023 | lttng_live_component_destroy_data(lttng_live); | |
1024 | lttng_live = NULL; | |
1025 | end: | |
1026 | return lttng_live; | |
d3e4dcd8 PP |
1027 | } |
1028 | ||
f3bc2010 | 1029 | BT_HIDDEN |
7cdc2bab MD |
1030 | enum bt_component_status lttng_live_component_init(struct bt_private_component *component, |
1031 | struct bt_value *params, void *init_method_data) | |
f3bc2010 | 1032 | { |
7cdc2bab MD |
1033 | struct lttng_live_component *lttng_live; |
1034 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
1035 | ||
7cdc2bab MD |
1036 | /* Passes ownership of iter ref to lttng_live_component_create. */ |
1037 | lttng_live = lttng_live_component_create(params, component); | |
1038 | if (!lttng_live) { | |
1039 | ret = BT_COMPONENT_STATUS_NOMEM; | |
1040 | goto end; | |
1041 | } | |
1042 | ||
1043 | lttng_live->no_stream_iter = g_new0(struct lttng_live_no_stream_iterator, 1); | |
1044 | lttng_live->no_stream_iter->p.type = LIVE_STREAM_TYPE_NO_STREAM; | |
1045 | lttng_live->no_stream_iter->lttng_live = lttng_live; | |
1046 | ||
1047 | lttng_live->no_stream_port = | |
1048 | bt_private_component_source_add_output_private_port( | |
1049 | lttng_live->private_component, "no-stream", | |
1050 | lttng_live->no_stream_iter); | |
1051 | lttng_live->no_stream_iter->port = lttng_live->no_stream_port; | |
1052 | ||
1053 | ret = bt_private_component_set_user_data(component, lttng_live); | |
1054 | if (ret != BT_COMPONENT_STATUS_OK) { | |
1055 | goto error; | |
1056 | } | |
1057 | ||
1058 | end: | |
1059 | return ret; | |
1060 | error: | |
1061 | (void) bt_private_component_set_user_data(component, NULL); | |
1062 | lttng_live_component_destroy_data(lttng_live); | |
1063 | return ret; | |
f3bc2010 | 1064 | } |
087bc060 MD |
1065 | |
1066 | static | |
1067 | void __attribute__((constructor)) bt_lttng_live_logging_ctor(void) | |
1068 | { | |
1069 | enum bt_logging_level log_level = BT_LOG_NONE; | |
1070 | const char *log_level_env = getenv("BABELTRACE_PLUGIN_LTTNG_LIVE_LOG_LEVEL"); | |
1071 | ||
1072 | if (!log_level_env) { | |
1073 | return; | |
1074 | } | |
1075 | ||
1076 | if (strcmp(log_level_env, "VERBOSE") == 0) { | |
1077 | log_level = BT_LOGGING_LEVEL_VERBOSE; | |
1078 | } else if (strcmp(log_level_env, "DEBUG") == 0) { | |
1079 | log_level = BT_LOGGING_LEVEL_DEBUG; | |
1080 | } else if (strcmp(log_level_env, "INFO") == 0) { | |
1081 | log_level = BT_LOGGING_LEVEL_INFO; | |
1082 | } else if (strcmp(log_level_env, "WARN") == 0) { | |
1083 | log_level = BT_LOGGING_LEVEL_WARN; | |
1084 | } else if (strcmp(log_level_env, "ERROR") == 0) { | |
1085 | log_level = BT_LOGGING_LEVEL_ERROR; | |
1086 | } else if (strcmp(log_level_env, "FATAL") == 0) { | |
1087 | log_level = BT_LOGGING_LEVEL_FATAL; | |
1088 | } | |
1089 | ||
1090 | bt_lttng_live_log_level = log_level; | |
1091 | } |