Commit | Line | Data |
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7cdc2bab MD |
1 | /* |
2 | * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | */ | |
22 | ||
020bc26f PP |
23 | #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-LIVE-SRC-VIEWER" |
24 | #include "logging.h" | |
25 | ||
7cdc2bab MD |
26 | #include <stdio.h> |
27 | #include <stdint.h> | |
28 | #include <stdlib.h> | |
29 | #include <stdbool.h> | |
30 | #include <unistd.h> | |
31 | #include <glib.h> | |
32 | #include <inttypes.h> | |
33 | #include <sys/socket.h> | |
34 | #include <sys/types.h> | |
35 | #include <netinet/in.h> | |
36 | #include <netdb.h> | |
37 | #include <fcntl.h> | |
38 | #include <poll.h> | |
39 | ||
40 | #include <babeltrace/compat/send-internal.h> | |
41 | #include <babeltrace/compiler-internal.h> | |
94b828f3 | 42 | #include <babeltrace/common-internal.h> |
4c66436f | 43 | #include <babeltrace/graph/graph.h> |
7cdc2bab MD |
44 | |
45 | #include "lttng-live-internal.h" | |
46 | #include "viewer-connection.h" | |
47 | #include "lttng-viewer-abi.h" | |
48 | #include "data-stream.h" | |
49 | #include "metadata.h" | |
50 | ||
4c66436f MD |
51 | static ssize_t lttng_live_recv(struct bt_live_viewer_connection *viewer_connection, |
52 | void *buf, size_t len) | |
7cdc2bab MD |
53 | { |
54 | ssize_t ret; | |
55 | size_t copied = 0, to_copy = len; | |
4c66436f MD |
56 | struct lttng_live_component *lttng_live = |
57 | viewer_connection->lttng_live; | |
58 | int fd = viewer_connection->control_sock; | |
7cdc2bab MD |
59 | |
60 | do { | |
61 | ret = recv(fd, buf + copied, to_copy, 0); | |
62 | if (ret > 0) { | |
63 | assert(ret <= to_copy); | |
64 | copied += ret; | |
65 | to_copy -= ret; | |
66 | } | |
4c66436f MD |
67 | if (ret < 0 && errno == EINTR) { |
68 | if (lttng_live && bt_graph_is_canceled(lttng_live->graph)) { | |
69 | break; | |
70 | } else { | |
71 | continue; | |
72 | } | |
73 | } | |
74 | } while (ret > 0 && to_copy > 0); | |
7cdc2bab MD |
75 | if (ret > 0) |
76 | ret = copied; | |
77 | /* ret = 0 means orderly shutdown, ret < 0 is error. */ | |
78 | return ret; | |
79 | } | |
80 | ||
4c66436f MD |
81 | static ssize_t lttng_live_send(struct bt_live_viewer_connection *viewer_connection, |
82 | const void *buf, size_t len) | |
7cdc2bab | 83 | { |
4c66436f MD |
84 | struct lttng_live_component *lttng_live = |
85 | viewer_connection->lttng_live; | |
86 | int fd = viewer_connection->control_sock; | |
7cdc2bab MD |
87 | ssize_t ret; |
88 | ||
4c66436f | 89 | for (;;) { |
7cdc2bab | 90 | ret = bt_send_nosigpipe(fd, buf, len); |
4c66436f MD |
91 | if (ret < 0 && errno == EINTR) { |
92 | if (lttng_live && bt_graph_is_canceled(lttng_live->graph)) { | |
93 | break; | |
94 | } else { | |
95 | continue; | |
96 | } | |
97 | } else { | |
98 | break; | |
99 | } | |
100 | } | |
7cdc2bab MD |
101 | return ret; |
102 | } | |
103 | ||
7cdc2bab MD |
104 | static int parse_url(struct bt_live_viewer_connection *viewer_connection) |
105 | { | |
94b828f3 MD |
106 | char error_buf[256] = { 0 }; |
107 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; | |
108 | int ret = -1; | |
7cdc2bab | 109 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
110 | |
111 | if (!path) { | |
112 | goto end; | |
113 | } | |
7cdc2bab | 114 | |
94b828f3 MD |
115 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, |
116 | error_buf, sizeof(error_buf)); | |
117 | if (!lttng_live_url_parts.proto) { | |
118 | BT_LOGW("Invalid LTTng live URL format: %s", error_buf); | |
7cdc2bab MD |
119 | goto end; |
120 | } | |
7cdc2bab | 121 | |
94b828f3 MD |
122 | viewer_connection->relay_hostname = |
123 | lttng_live_url_parts.hostname; | |
124 | lttng_live_url_parts.hostname = NULL; | |
125 | ||
126 | if (lttng_live_url_parts.port >= 0) { | |
127 | viewer_connection->port = lttng_live_url_parts.port; | |
128 | } else { | |
7cdc2bab MD |
129 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
130 | } | |
131 | ||
94b828f3 MD |
132 | viewer_connection->target_hostname = |
133 | lttng_live_url_parts.target_hostname; | |
134 | lttng_live_url_parts.target_hostname = NULL; | |
135 | ||
136 | if (lttng_live_url_parts.session_name) { | |
137 | viewer_connection->session_name = | |
138 | lttng_live_url_parts.session_name; | |
139 | lttng_live_url_parts.session_name = NULL; | |
7cdc2bab MD |
140 | } |
141 | ||
087bc060 | 142 | BT_LOGD("Connecting to hostname : %s, port : %d, " |
7cdc2bab | 143 | "target hostname : %s, session name : %s, " |
94b828f3 MD |
144 | "proto : %s", |
145 | viewer_connection->relay_hostname->str, | |
7cdc2bab | 146 | viewer_connection->port, |
94b828f3 MD |
147 | viewer_connection->target_hostname == NULL ? |
148 | "<none>" : viewer_connection->target_hostname->str, | |
149 | viewer_connection->session_name == NULL ? | |
150 | "<none>" : viewer_connection->session_name->str, | |
151 | lttng_live_url_parts.proto->str); | |
7cdc2bab MD |
152 | ret = 0; |
153 | ||
154 | end: | |
94b828f3 | 155 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
156 | return ret; |
157 | } | |
158 | ||
159 | static int lttng_live_handshake(struct bt_live_viewer_connection *viewer_connection) | |
160 | { | |
161 | struct lttng_viewer_cmd cmd; | |
162 | struct lttng_viewer_connect connect; | |
163 | int ret; | |
164 | ssize_t ret_len; | |
165 | ||
166 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
167 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
168 | cmd.cmd_version = htobe32(0); | |
169 | ||
170 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
171 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
172 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
173 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
174 | ||
4c66436f | 175 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 176 | if (ret_len < 0) { |
087bc060 | 177 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
178 | goto error; |
179 | } | |
180 | assert(ret_len == sizeof(cmd)); | |
181 | ||
4c66436f | 182 | ret_len = lttng_live_send(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 183 | if (ret_len < 0) { |
087bc060 | 184 | BT_LOGE("Error sending version: %s", strerror(errno)); |
7cdc2bab MD |
185 | goto error; |
186 | } | |
187 | assert(ret_len == sizeof(connect)); | |
188 | ||
4c66436f | 189 | ret_len = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 190 | if (ret_len == 0) { |
087bc060 | 191 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
192 | goto error; |
193 | } | |
194 | if (ret_len < 0) { | |
087bc060 | 195 | BT_LOGE("Error receiving version: %s", strerror(errno)); |
7cdc2bab MD |
196 | goto error; |
197 | } | |
198 | assert(ret_len == sizeof(connect)); | |
199 | ||
087bc060 | 200 | BT_LOGD("Received viewer session ID : %" PRIu64, |
7cdc2bab | 201 | be64toh(connect.viewer_session_id)); |
087bc060 | 202 | BT_LOGD("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
203 | be32toh(connect.minor)); |
204 | ||
205 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
087bc060 | 206 | BT_LOGE("Incompatible lttng-relayd protocol"); |
7cdc2bab MD |
207 | goto error; |
208 | } | |
209 | /* Use the smallest protocol version implemented. */ | |
210 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
211 | viewer_connection->minor = be32toh(connect.minor); | |
212 | } else { | |
213 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
214 | } | |
215 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
216 | ret = 0; | |
217 | return ret; | |
218 | ||
219 | error: | |
087bc060 | 220 | BT_LOGE("Unable to establish connection"); |
7cdc2bab MD |
221 | return -1; |
222 | } | |
223 | ||
224 | static int lttng_live_connect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
225 | { | |
226 | struct hostent *host; | |
227 | struct sockaddr_in server_addr; | |
228 | int ret; | |
229 | ||
230 | if (parse_url(viewer_connection)) { | |
231 | goto error; | |
232 | } | |
233 | ||
94b828f3 | 234 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 235 | if (!host) { |
087bc060 | 236 | BT_LOGE("Cannot lookup hostname %s", |
94b828f3 | 237 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
238 | goto error; |
239 | } | |
240 | ||
241 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { | |
087bc060 | 242 | BT_LOGE("Socket creation failed: %s", strerror(errno)); |
7cdc2bab MD |
243 | goto error; |
244 | } | |
245 | ||
246 | server_addr.sin_family = AF_INET; | |
247 | server_addr.sin_port = htons(viewer_connection->port); | |
248 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
249 | memset(&(server_addr.sin_zero), 0, 8); | |
250 | ||
251 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
252 | sizeof(struct sockaddr)) == -1) { | |
087bc060 | 253 | BT_LOGE("Connection failed: %s", strerror(errno)); |
7cdc2bab MD |
254 | goto error; |
255 | } | |
256 | if (lttng_live_handshake(viewer_connection)) { | |
257 | goto error; | |
258 | } | |
259 | ||
260 | ret = 0; | |
261 | ||
262 | return ret; | |
263 | ||
264 | error: | |
265 | if (viewer_connection->control_sock >= 0) { | |
266 | if (close(viewer_connection->control_sock)) { | |
087bc060 | 267 | BT_LOGE("Close: %s", strerror(errno)); |
7cdc2bab MD |
268 | } |
269 | } | |
270 | viewer_connection->control_sock = -1; | |
271 | return -1; | |
272 | } | |
273 | ||
274 | static void lttng_live_disconnect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
275 | { | |
276 | if (viewer_connection->control_sock < 0) { | |
277 | return; | |
278 | } | |
279 | if (close(viewer_connection->control_sock)) { | |
087bc060 | 280 | BT_LOGE("Close: %s", strerror(errno)); |
7cdc2bab MD |
281 | viewer_connection->control_sock = -1; |
282 | } | |
283 | } | |
284 | ||
285 | static void connection_release(struct bt_object *obj) | |
286 | { | |
287 | struct bt_live_viewer_connection *conn = | |
288 | container_of(obj, struct bt_live_viewer_connection, obj); | |
289 | ||
290 | bt_live_viewer_connection_destroy(conn); | |
291 | } | |
292 | ||
293 | static | |
294 | enum bt_value_status list_update_session(struct bt_value *results, | |
295 | const struct lttng_viewer_session *session, | |
296 | bool *_found) | |
297 | { | |
298 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
299 | struct bt_value *map = NULL; | |
300 | struct bt_value *hostname = NULL; | |
301 | struct bt_value *session_name = NULL; | |
302 | struct bt_value *btval = NULL; | |
303 | int i, len; | |
304 | bool found = false; | |
305 | ||
306 | len = bt_value_array_size(results); | |
307 | if (len < 0) { | |
308 | ret = BT_VALUE_STATUS_ERROR; | |
309 | goto end; | |
310 | } | |
311 | for (i = 0; i < len; i++) { | |
312 | const char *hostname_str = NULL; | |
313 | const char *session_name_str = NULL; | |
314 | ||
315 | map = bt_value_array_get(results, (size_t) i); | |
316 | if (!map) { | |
317 | ret = BT_VALUE_STATUS_ERROR; | |
318 | goto end; | |
319 | } | |
320 | hostname = bt_value_map_get(map, "target-hostname"); | |
321 | if (!hostname) { | |
322 | ret = BT_VALUE_STATUS_ERROR; | |
323 | goto end; | |
324 | } | |
325 | session_name = bt_value_map_get(map, "session-name"); | |
326 | if (!session_name) { | |
327 | ret = BT_VALUE_STATUS_ERROR; | |
328 | goto end; | |
329 | } | |
330 | ret = bt_value_string_get(hostname, &hostname_str); | |
331 | if (ret != BT_VALUE_STATUS_OK) { | |
332 | goto end; | |
333 | } | |
334 | ret = bt_value_string_get(session_name, &session_name_str); | |
335 | if (ret != BT_VALUE_STATUS_OK) { | |
336 | goto end; | |
337 | } | |
338 | ||
339 | if (!strcmp(session->hostname, hostname_str) | |
340 | && !strcmp(session->session_name, | |
341 | session_name_str)) { | |
342 | int64_t val; | |
343 | uint32_t streams = be32toh(session->streams); | |
344 | uint32_t clients = be32toh(session->clients); | |
345 | ||
346 | found = true; | |
347 | ||
348 | btval = bt_value_map_get(map, "stream-count"); | |
349 | if (!btval) { | |
350 | ret = BT_VALUE_STATUS_ERROR; | |
351 | goto end; | |
352 | } | |
353 | ret = bt_value_integer_get(btval, &val); | |
354 | if (ret != BT_VALUE_STATUS_OK) { | |
355 | goto end; | |
356 | } | |
357 | /* sum */ | |
358 | val += streams; | |
359 | ret = bt_value_integer_set(btval, val); | |
360 | if (ret != BT_VALUE_STATUS_OK) { | |
361 | goto end; | |
362 | } | |
363 | BT_PUT(btval); | |
364 | ||
365 | btval = bt_value_map_get(map, "client-count"); | |
366 | if (!btval) { | |
367 | ret = BT_VALUE_STATUS_ERROR; | |
368 | goto end; | |
369 | } | |
370 | ret = bt_value_integer_get(btval, &val); | |
371 | if (ret != BT_VALUE_STATUS_OK) { | |
372 | goto end; | |
373 | } | |
374 | /* max */ | |
375 | val = max_t(int64_t, clients, val); | |
376 | ret = bt_value_integer_set(btval, val); | |
377 | if (ret != BT_VALUE_STATUS_OK) { | |
378 | goto end; | |
379 | } | |
380 | BT_PUT(btval); | |
381 | } | |
382 | ||
383 | BT_PUT(hostname); | |
384 | BT_PUT(session_name); | |
385 | BT_PUT(map); | |
386 | ||
387 | if (found) { | |
388 | break; | |
389 | } | |
390 | } | |
391 | end: | |
392 | BT_PUT(btval); | |
393 | BT_PUT(hostname); | |
394 | BT_PUT(session_name); | |
395 | BT_PUT(map); | |
396 | *_found = found; | |
397 | return ret; | |
398 | } | |
399 | ||
400 | static | |
401 | enum bt_value_status list_append_session(struct bt_value *results, | |
402 | GString *base_url, | |
403 | const struct lttng_viewer_session *session) | |
404 | { | |
405 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
406 | struct bt_value *map = NULL; | |
407 | GString *url = NULL; | |
408 | bool found = false; | |
409 | ||
410 | /* | |
411 | * If the session already exists, add the stream count to it, | |
412 | * and do max of client counts. | |
413 | */ | |
414 | ret = list_update_session(results, session, &found); | |
415 | if (ret != BT_VALUE_STATUS_OK || found) { | |
416 | goto end; | |
417 | } | |
418 | ||
419 | map = bt_value_map_create(); | |
420 | if (!map) { | |
421 | ret = BT_VALUE_STATUS_ERROR; | |
422 | goto end; | |
423 | } | |
424 | ||
425 | if (base_url->len < 1) { | |
426 | ret = BT_VALUE_STATUS_ERROR; | |
427 | goto end; | |
428 | } | |
429 | /* | |
430 | * key = "url", | |
431 | * value = <string>, | |
432 | */ | |
433 | url = g_string_new(base_url->str); | |
434 | g_string_append(url, "/host/"); | |
435 | g_string_append(url, session->hostname); | |
436 | g_string_append_c(url, '/'); | |
437 | g_string_append(url, session->session_name); | |
438 | ||
439 | ret = bt_value_map_insert_string(map, "url", url->str); | |
440 | if (ret != BT_VALUE_STATUS_OK) { | |
441 | goto end; | |
442 | } | |
443 | ||
444 | /* | |
445 | * key = "target-hostname", | |
446 | * value = <string>, | |
447 | */ | |
448 | ret = bt_value_map_insert_string(map, "target-hostname", | |
449 | session->hostname); | |
450 | if (ret != BT_VALUE_STATUS_OK) { | |
451 | goto end; | |
452 | } | |
453 | ||
454 | /* | |
455 | * key = "session-name", | |
456 | * value = <string>, | |
457 | */ | |
458 | ret = bt_value_map_insert_string(map, "session-name", | |
459 | session->session_name); | |
460 | if (ret != BT_VALUE_STATUS_OK) { | |
461 | goto end; | |
462 | } | |
463 | ||
464 | /* | |
465 | * key = "timer-us", | |
466 | * value = <integer>, | |
467 | */ | |
468 | { | |
469 | uint32_t live_timer = be32toh(session->live_timer); | |
470 | ||
471 | ret = bt_value_map_insert_integer(map, "timer-us", | |
472 | live_timer); | |
473 | if (ret != BT_VALUE_STATUS_OK) { | |
474 | goto end; | |
475 | } | |
476 | } | |
477 | ||
478 | /* | |
479 | * key = "stream-count", | |
480 | * value = <integer>, | |
481 | */ | |
482 | { | |
483 | uint32_t streams = be32toh(session->streams); | |
484 | ||
485 | ret = bt_value_map_insert_integer(map, "stream-count", | |
486 | streams); | |
487 | if (ret != BT_VALUE_STATUS_OK) { | |
488 | goto end; | |
489 | } | |
490 | } | |
491 | ||
492 | ||
493 | /* | |
494 | * key = "client-count", | |
495 | * value = <integer>, | |
496 | */ | |
497 | { | |
498 | uint32_t clients = be32toh(session->clients); | |
499 | ||
500 | ret = bt_value_map_insert_integer(map, "client-count", | |
501 | clients); | |
502 | if (ret != BT_VALUE_STATUS_OK) { | |
503 | goto end; | |
504 | } | |
505 | } | |
506 | ||
507 | ret = bt_value_array_append(results, map); | |
508 | end: | |
509 | if (url) { | |
510 | g_string_free(url, TRUE); | |
511 | } | |
512 | BT_PUT(map); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | /* | |
517 | * Data structure returned: | |
518 | * | |
519 | * { | |
520 | * <array> = { | |
521 | * [n] = { | |
522 | * <map> = { | |
523 | * { | |
524 | * key = "url", | |
525 | * value = <string>, | |
526 | * }, | |
527 | * { | |
528 | * key = "target-hostname", | |
529 | * value = <string>, | |
530 | * }, | |
531 | * { | |
532 | * key = "session-name", | |
533 | * value = <string>, | |
534 | * }, | |
535 | * { | |
536 | * key = "timer-us", | |
537 | * value = <integer>, | |
538 | * }, | |
539 | * { | |
540 | * key = "stream-count", | |
541 | * value = <integer>, | |
542 | * }, | |
543 | * { | |
544 | * key = "client-count", | |
545 | * value = <integer>, | |
546 | * }, | |
547 | * }, | |
548 | * } | |
549 | * } | |
550 | */ | |
551 | ||
552 | BT_HIDDEN | |
553 | struct bt_value *bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection *viewer_connection) | |
554 | { | |
555 | struct bt_value *results = NULL; | |
556 | struct lttng_viewer_cmd cmd; | |
557 | struct lttng_viewer_list_sessions list; | |
558 | uint32_t i, sessions_count; | |
559 | ssize_t ret_len; | |
560 | ||
561 | if (lttng_live_handshake(viewer_connection)) { | |
562 | goto error; | |
563 | } | |
564 | ||
565 | results = bt_value_array_create(); | |
566 | if (!results) { | |
087bc060 | 567 | BT_LOGE("Error creating array"); |
7cdc2bab MD |
568 | goto error; |
569 | } | |
570 | ||
571 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
572 | cmd.data_size = htobe64((uint64_t) 0); | |
573 | cmd.cmd_version = htobe32(0); | |
574 | ||
4c66436f | 575 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 576 | if (ret_len < 0) { |
087bc060 | 577 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
578 | goto error; |
579 | } | |
580 | assert(ret_len == sizeof(cmd)); | |
581 | ||
4c66436f | 582 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 583 | if (ret_len == 0) { |
087bc060 | 584 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
585 | goto error; |
586 | } | |
587 | if (ret_len < 0) { | |
087bc060 | 588 | BT_LOGE("Error receiving session list: %s", strerror(errno)); |
7cdc2bab MD |
589 | goto error; |
590 | } | |
591 | assert(ret_len == sizeof(list)); | |
592 | ||
593 | sessions_count = be32toh(list.sessions_count); | |
594 | for (i = 0; i < sessions_count; i++) { | |
595 | struct lttng_viewer_session lsession; | |
596 | ||
4c66436f | 597 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
598 | &lsession, sizeof(lsession)); |
599 | if (ret_len == 0) { | |
087bc060 | 600 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
601 | goto error; |
602 | } | |
603 | if (ret_len < 0) { | |
087bc060 | 604 | BT_LOGE("Error receiving session: %s", strerror(errno)); |
7cdc2bab MD |
605 | goto error; |
606 | } | |
607 | assert(ret_len == sizeof(lsession)); | |
608 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
609 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
610 | if (list_append_session(results, | |
611 | viewer_connection->url, &lsession) | |
612 | != BT_VALUE_STATUS_OK) { | |
613 | goto error; | |
614 | } | |
615 | } | |
616 | goto end; | |
617 | error: | |
618 | BT_PUT(results); | |
619 | end: | |
620 | return results; | |
621 | } | |
622 | ||
623 | static | |
624 | int lttng_live_query_session_ids(struct lttng_live_component *lttng_live) | |
625 | { | |
626 | struct lttng_viewer_cmd cmd; | |
627 | struct lttng_viewer_list_sessions list; | |
628 | struct lttng_viewer_session lsession; | |
629 | uint32_t i, sessions_count; | |
630 | ssize_t ret_len; | |
631 | uint64_t session_id; | |
632 | struct bt_live_viewer_connection *viewer_connection = | |
633 | lttng_live->viewer_connection; | |
634 | ||
635 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
636 | cmd.data_size = htobe64((uint64_t) 0); | |
637 | cmd.cmd_version = htobe32(0); | |
638 | ||
4c66436f | 639 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 640 | if (ret_len < 0) { |
087bc060 | 641 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
642 | goto error; |
643 | } | |
644 | assert(ret_len == sizeof(cmd)); | |
645 | ||
4c66436f | 646 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 647 | if (ret_len == 0) { |
087bc060 | 648 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
649 | goto error; |
650 | } | |
651 | if (ret_len < 0) { | |
087bc060 | 652 | BT_LOGE("Error receiving session list: %s", strerror(errno)); |
7cdc2bab MD |
653 | goto error; |
654 | } | |
655 | assert(ret_len == sizeof(list)); | |
656 | ||
657 | sessions_count = be32toh(list.sessions_count); | |
658 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 659 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
660 | &lsession, sizeof(lsession)); |
661 | if (ret_len == 0) { | |
087bc060 | 662 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
663 | goto error; |
664 | } | |
665 | if (ret_len < 0) { | |
087bc060 | 666 | BT_LOGE("Error receiving session: %s", strerror(errno)); |
7cdc2bab MD |
667 | goto error; |
668 | } | |
669 | assert(ret_len == sizeof(lsession)); | |
670 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
671 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
672 | session_id = be64toh(lsession.id); | |
673 | ||
674 | if ((strncmp(lsession.session_name, | |
94b828f3 | 675 | viewer_connection->session_name->str, |
7cdc2bab | 676 | MAXNAMLEN) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 677 | viewer_connection->target_hostname->str, |
7cdc2bab MD |
678 | MAXNAMLEN) == 0)) { |
679 | if (lttng_live_add_session(lttng_live, session_id)) { | |
680 | goto error; | |
681 | } | |
682 | } | |
683 | } | |
684 | ||
685 | return 0; | |
686 | ||
687 | error: | |
087bc060 | 688 | BT_LOGE("Unable to query session ids"); |
7cdc2bab MD |
689 | return -1; |
690 | } | |
691 | ||
692 | BT_HIDDEN | |
693 | int lttng_live_create_viewer_session(struct lttng_live_component *lttng_live) | |
694 | { | |
695 | struct lttng_viewer_cmd cmd; | |
696 | struct lttng_viewer_create_session_response resp; | |
697 | ssize_t ret_len; | |
698 | struct bt_live_viewer_connection *viewer_connection = | |
699 | lttng_live->viewer_connection; | |
700 | ||
701 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
702 | cmd.data_size = htobe64((uint64_t) 0); | |
703 | cmd.cmd_version = htobe32(0); | |
704 | ||
4c66436f | 705 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 706 | if (ret_len < 0) { |
087bc060 | 707 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
708 | goto error; |
709 | } | |
710 | assert(ret_len == sizeof(cmd)); | |
711 | ||
4c66436f | 712 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 713 | if (ret_len == 0) { |
087bc060 | 714 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
715 | goto error; |
716 | } | |
717 | if (ret_len < 0) { | |
087bc060 | 718 | BT_LOGE("Error receiving create session reply: %s", strerror(errno)); |
7cdc2bab MD |
719 | goto error; |
720 | } | |
721 | assert(ret_len == sizeof(resp)); | |
722 | ||
723 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
087bc060 | 724 | BT_LOGE("Error creating viewer session"); |
7cdc2bab MD |
725 | goto error; |
726 | } | |
727 | if (lttng_live_query_session_ids(lttng_live)) { | |
728 | goto error; | |
729 | } | |
730 | ||
731 | return 0; | |
732 | ||
733 | error: | |
734 | return -1; | |
735 | } | |
736 | ||
737 | static | |
738 | int receive_streams(struct lttng_live_session *session, | |
739 | uint32_t stream_count) | |
740 | { | |
741 | ssize_t ret_len; | |
742 | uint32_t i; | |
743 | struct lttng_live_component *lttng_live = session->lttng_live; | |
744 | struct bt_live_viewer_connection *viewer_connection = | |
745 | lttng_live->viewer_connection; | |
746 | ||
087bc060 | 747 | BT_LOGD("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
748 | for (i = 0; i < stream_count; i++) { |
749 | struct lttng_viewer_stream stream; | |
750 | struct lttng_live_stream_iterator *live_stream; | |
751 | uint64_t stream_id; | |
752 | uint64_t ctf_trace_id; | |
753 | ||
4c66436f | 754 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 755 | if (ret_len == 0) { |
087bc060 | 756 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
757 | goto error; |
758 | } | |
759 | if (ret_len < 0) { | |
087bc060 | 760 | BT_LOGE("Error receiving stream"); |
7cdc2bab MD |
761 | goto error; |
762 | } | |
763 | assert(ret_len == sizeof(stream)); | |
764 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
765 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
766 | stream_id = be64toh(stream.id); | |
767 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
768 | ||
769 | if (stream.metadata_flag) { | |
087bc060 | 770 | BT_LOGD(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
771 | stream_id, stream.path_name, |
772 | stream.channel_name); | |
773 | if (lttng_live_metadata_create_stream(session, | |
774 | ctf_trace_id, stream_id)) { | |
087bc060 | 775 | BT_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
776 | |
777 | goto error; | |
778 | } | |
779 | session->lazy_stream_notif_init = true; | |
780 | } else { | |
087bc060 | 781 | BT_LOGD(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
782 | stream_id, stream.path_name, |
783 | stream.channel_name); | |
784 | live_stream = lttng_live_stream_iterator_create(session, | |
785 | ctf_trace_id, stream_id); | |
786 | if (!live_stream) { | |
087bc060 | 787 | BT_LOGE("Error creating streamn"); |
7cdc2bab MD |
788 | goto error; |
789 | } | |
790 | } | |
791 | } | |
792 | return 0; | |
793 | ||
794 | error: | |
795 | return -1; | |
796 | } | |
797 | ||
798 | BT_HIDDEN | |
799 | int lttng_live_attach_session(struct lttng_live_session *session) | |
800 | { | |
801 | struct lttng_viewer_cmd cmd; | |
802 | struct lttng_viewer_attach_session_request rq; | |
803 | struct lttng_viewer_attach_session_response rp; | |
804 | ssize_t ret_len; | |
805 | struct lttng_live_component *lttng_live = session->lttng_live; | |
806 | struct bt_live_viewer_connection *viewer_connection = | |
807 | lttng_live->viewer_connection; | |
808 | uint64_t session_id = session->id; | |
809 | uint32_t streams_count; | |
810 | ||
811 | if (session->attached) { | |
812 | return 0; | |
813 | } | |
814 | ||
815 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); | |
816 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
817 | cmd.cmd_version = htobe32(0); | |
818 | ||
819 | memset(&rq, 0, sizeof(rq)); | |
820 | rq.session_id = htobe64(session_id); | |
821 | // TODO: add cmd line parameter to select seek beginning | |
822 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
823 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
824 | ||
4c66436f | 825 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 826 | if (ret_len < 0) { |
087bc060 | 827 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
828 | goto error; |
829 | } | |
830 | assert(ret_len == sizeof(cmd)); | |
831 | ||
4c66436f | 832 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
7cdc2bab | 833 | if (ret_len < 0) { |
087bc060 | 834 | BT_LOGE("Error sending attach request: %s", strerror(errno)); |
7cdc2bab MD |
835 | goto error; |
836 | } | |
837 | assert(ret_len == sizeof(rq)); | |
838 | ||
4c66436f | 839 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 840 | if (ret_len == 0) { |
087bc060 | 841 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
842 | goto error; |
843 | } | |
844 | if (ret_len < 0) { | |
087bc060 | 845 | BT_LOGE("Error receiving attach response: %s", strerror(errno)); |
7cdc2bab MD |
846 | goto error; |
847 | } | |
848 | assert(ret_len == sizeof(rp)); | |
849 | ||
850 | streams_count = be32toh(rp.streams_count); | |
851 | switch(be32toh(rp.status)) { | |
852 | case LTTNG_VIEWER_ATTACH_OK: | |
853 | break; | |
854 | case LTTNG_VIEWER_ATTACH_UNK: | |
087bc060 | 855 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
856 | goto error; |
857 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
087bc060 | 858 | BT_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
859 | goto error; |
860 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
087bc060 | 861 | BT_LOGW("Not a live session"); |
7cdc2bab MD |
862 | goto error; |
863 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
087bc060 | 864 | BT_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
865 | goto error; |
866 | default: | |
087bc060 | 867 | BT_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
868 | goto error; |
869 | } | |
870 | ||
871 | /* We receive the initial list of streams. */ | |
872 | if (receive_streams(session, streams_count)) { | |
873 | goto error; | |
874 | } | |
875 | ||
876 | session->attached = true; | |
877 | session->new_streams_needed = false; | |
878 | ||
879 | return 0; | |
880 | ||
881 | error: | |
882 | return -1; | |
883 | } | |
884 | ||
885 | BT_HIDDEN | |
886 | int lttng_live_detach_session(struct lttng_live_session *session) | |
887 | { | |
888 | struct lttng_viewer_cmd cmd; | |
889 | struct lttng_viewer_detach_session_request rq; | |
890 | struct lttng_viewer_detach_session_response rp; | |
891 | ssize_t ret_len; | |
892 | struct lttng_live_component *lttng_live = session->lttng_live; | |
893 | struct bt_live_viewer_connection *viewer_connection = | |
894 | lttng_live->viewer_connection; | |
895 | uint64_t session_id = session->id; | |
896 | ||
897 | if (!session->attached) { | |
898 | return 0; | |
899 | } | |
900 | ||
901 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
902 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
903 | cmd.cmd_version = htobe32(0); | |
904 | ||
905 | memset(&rq, 0, sizeof(rq)); | |
906 | rq.session_id = htobe64(session_id); | |
907 | ||
4c66436f | 908 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 909 | if (ret_len < 0) { |
087bc060 | 910 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
911 | goto error; |
912 | } | |
913 | assert(ret_len == sizeof(cmd)); | |
914 | ||
4c66436f | 915 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
7cdc2bab | 916 | if (ret_len < 0) { |
087bc060 | 917 | BT_LOGE("Error sending detach request: %s", strerror(errno)); |
7cdc2bab MD |
918 | goto error; |
919 | } | |
920 | assert(ret_len == sizeof(rq)); | |
921 | ||
4c66436f | 922 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 923 | if (ret_len == 0) { |
087bc060 | 924 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
925 | goto error; |
926 | } | |
927 | if (ret_len < 0) { | |
087bc060 | 928 | BT_LOGE("Error receiving detach response: %s", strerror(errno)); |
7cdc2bab MD |
929 | goto error; |
930 | } | |
931 | assert(ret_len == sizeof(rp)); | |
932 | ||
933 | switch(be32toh(rp.status)) { | |
934 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
935 | break; | |
936 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
087bc060 | 937 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
938 | goto error; |
939 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
087bc060 | 940 | BT_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
941 | goto error; |
942 | default: | |
087bc060 | 943 | BT_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
944 | goto error; |
945 | } | |
946 | ||
947 | session->attached = false; | |
948 | ||
949 | return 0; | |
950 | ||
951 | error: | |
952 | return -1; | |
953 | } | |
954 | ||
955 | BT_HIDDEN | |
956 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
957 | FILE *fp) | |
958 | { | |
959 | uint64_t len = 0; | |
960 | int ret; | |
961 | struct lttng_viewer_cmd cmd; | |
962 | struct lttng_viewer_get_metadata rq; | |
963 | struct lttng_viewer_metadata_packet rp; | |
964 | char *data = NULL; | |
965 | ssize_t ret_len; | |
966 | struct lttng_live_session *session = trace->session; | |
967 | struct lttng_live_component *lttng_live = session->lttng_live; | |
968 | struct lttng_live_metadata *metadata = trace->metadata; | |
969 | struct bt_live_viewer_connection *viewer_connection = | |
970 | lttng_live->viewer_connection; | |
971 | ||
972 | rq.stream_id = htobe64(metadata->stream_id); | |
973 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
974 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
975 | cmd.cmd_version = htobe32(0); | |
976 | ||
4c66436f | 977 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 978 | if (ret_len < 0) { |
087bc060 | 979 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
980 | goto error; |
981 | } | |
982 | assert(ret_len == sizeof(cmd)); | |
983 | ||
4c66436f | 984 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
7cdc2bab | 985 | if (ret_len < 0) { |
087bc060 | 986 | BT_LOGE("Error sending get_metadata request: %s", strerror(errno)); |
7cdc2bab MD |
987 | goto error; |
988 | } | |
989 | assert(ret_len == sizeof(rq)); | |
990 | ||
4c66436f | 991 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 992 | if (ret_len == 0) { |
087bc060 | 993 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
994 | goto error; |
995 | } | |
996 | if (ret_len < 0) { | |
087bc060 | 997 | BT_LOGE("Error receiving get_metadata response: %s", strerror(errno)); |
7cdc2bab MD |
998 | goto error; |
999 | } | |
1000 | assert(ret_len == sizeof(rp)); | |
1001 | ||
1002 | switch (be32toh(rp.status)) { | |
1003 | case LTTNG_VIEWER_METADATA_OK: | |
087bc060 | 1004 | BT_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1005 | break; |
1006 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
087bc060 | 1007 | BT_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1008 | ret = 0; |
1009 | goto end; | |
1010 | case LTTNG_VIEWER_METADATA_ERR: | |
087bc060 | 1011 | BT_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1012 | goto error; |
1013 | default: | |
087bc060 | 1014 | BT_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1015 | goto error; |
1016 | } | |
1017 | ||
1018 | len = be64toh(rp.len); | |
087bc060 | 1019 | BT_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1020 | if (len <= 0) { |
1021 | goto error; | |
1022 | } | |
1023 | ||
1024 | data = zmalloc(len); | |
1025 | if (!data) { | |
087bc060 | 1026 | BT_LOGE("relay data zmalloc: %s", strerror(errno)); |
7cdc2bab MD |
1027 | goto error; |
1028 | } | |
4c66436f | 1029 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1030 | if (ret_len == 0) { |
087bc060 | 1031 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1032 | goto error_free_data; |
1033 | } | |
1034 | if (ret_len < 0) { | |
087bc060 | 1035 | BT_LOGE("Error receiving trace packet: %s", strerror(errno)); |
7cdc2bab MD |
1036 | goto error_free_data; |
1037 | } | |
1038 | assert(ret_len == len); | |
1039 | ||
1040 | do { | |
1041 | ret_len = fwrite(data, 1, len, fp); | |
1042 | } while (ret_len < 0 && errno == EINTR); | |
1043 | if (ret_len < 0) { | |
087bc060 | 1044 | BT_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1045 | goto error_free_data; |
1046 | } | |
1047 | assert(ret_len == len); | |
1048 | free(data); | |
1049 | ret = len; | |
1050 | end: | |
1051 | return ret; | |
1052 | ||
1053 | error_free_data: | |
1054 | free(data); | |
1055 | error: | |
1056 | return -1; | |
1057 | } | |
1058 | ||
1059 | /* | |
1060 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1061 | */ | |
1062 | static | |
1063 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1064 | struct packet_index *pindex) | |
1065 | { | |
1066 | assert(lindex); | |
1067 | assert(pindex); | |
1068 | ||
1069 | pindex->offset = be64toh(lindex->offset); | |
1070 | pindex->packet_size = be64toh(lindex->packet_size); | |
1071 | pindex->content_size = be64toh(lindex->content_size); | |
1072 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1073 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1074 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1075 | } | |
1076 | ||
1077 | BT_HIDDEN | |
1078 | enum bt_ctf_lttng_live_iterator_status lttng_live_get_next_index(struct lttng_live_component *lttng_live, | |
1079 | struct lttng_live_stream_iterator *stream, | |
1080 | struct packet_index *index) | |
1081 | { | |
1082 | struct lttng_viewer_cmd cmd; | |
1083 | struct lttng_viewer_get_next_index rq; | |
1084 | ssize_t ret_len; | |
1085 | struct lttng_viewer_index rp; | |
1086 | uint32_t flags, status; | |
1087 | enum bt_ctf_lttng_live_iterator_status retstatus = | |
1088 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1089 | struct bt_live_viewer_connection *viewer_connection = | |
1090 | lttng_live->viewer_connection; | |
1091 | struct lttng_live_trace *trace = stream->trace; | |
1092 | ||
1093 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1094 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1095 | cmd.cmd_version = htobe32(0); | |
1096 | ||
1097 | memset(&rq, 0, sizeof(rq)); | |
1098 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1099 | ||
4c66436f | 1100 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 1101 | if (ret_len < 0) { |
087bc060 | 1102 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
1103 | goto error; |
1104 | } | |
1105 | assert(ret_len == sizeof(cmd)); | |
1106 | ||
4c66436f | 1107 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
7cdc2bab | 1108 | if (ret_len < 0) { |
087bc060 | 1109 | BT_LOGE("Error sending get_next_index request: %s", strerror(errno)); |
7cdc2bab MD |
1110 | goto error; |
1111 | } | |
1112 | assert(ret_len == sizeof(rq)); | |
1113 | ||
4c66436f | 1114 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1115 | if (ret_len == 0) { |
087bc060 | 1116 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1117 | goto error; |
1118 | } | |
1119 | if (ret_len < 0) { | |
087bc060 | 1120 | BT_LOGE("Error receiving get_next_index response: %s", strerror(errno)); |
7cdc2bab MD |
1121 | goto error; |
1122 | } | |
1123 | assert(ret_len == sizeof(rp)); | |
1124 | ||
1125 | flags = be32toh(rp.flags); | |
1126 | status = be32toh(rp.status); | |
1127 | ||
1128 | switch (status) { | |
1129 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1130 | { | |
1131 | uint64_t ctf_stream_class_id; | |
1132 | ||
087bc060 | 1133 | BT_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1134 | memset(index, 0, sizeof(struct packet_index)); |
1135 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
1136 | stream->current_inactivity_timestamp = index->ts_cycles.timestamp_end; | |
1137 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1138 | if (stream->ctf_stream_class_id != -1ULL) { | |
1139 | assert(stream->ctf_stream_class_id == | |
1140 | ctf_stream_class_id); | |
1141 | } else { | |
1142 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1143 | } | |
1144 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1145 | break; | |
1146 | } | |
1147 | case LTTNG_VIEWER_INDEX_OK: | |
1148 | { | |
1149 | uint64_t ctf_stream_class_id; | |
1150 | ||
087bc060 | 1151 | BT_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1152 | lttng_index_to_packet_index(&rp, index); |
1153 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1154 | if (stream->ctf_stream_class_id != -1ULL) { | |
1155 | assert(stream->ctf_stream_class_id == | |
1156 | ctf_stream_class_id); | |
1157 | } else { | |
1158 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1159 | } | |
1160 | ||
1161 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
1162 | stream->current_packet_end_timestamp = | |
1163 | index->ts_cycles.timestamp_end; | |
1164 | ||
1165 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1166 | BT_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1167 | trace->new_metadata_needed = true; |
1168 | } | |
1169 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1170 | BT_LOGD("get_next_index: new streams needed"); |
7cdc2bab MD |
1171 | lttng_live_need_new_streams(lttng_live); |
1172 | } | |
1173 | break; | |
1174 | } | |
1175 | case LTTNG_VIEWER_INDEX_RETRY: | |
087bc060 | 1176 | BT_LOGD("get_next_index: retry"); |
7cdc2bab MD |
1177 | memset(index, 0, sizeof(struct packet_index)); |
1178 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
1179 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1180 | goto end; | |
1181 | case LTTNG_VIEWER_INDEX_HUP: | |
087bc060 | 1182 | BT_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1183 | memset(index, 0, sizeof(struct packet_index)); |
1184 | index->offset = EOF; | |
1185 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
1186 | stream->state = LTTNG_LIVE_STREAM_EOF; | |
1187 | break; | |
1188 | case LTTNG_VIEWER_INDEX_ERR: | |
087bc060 | 1189 | BT_LOGE("get_next_index: error"); |
7cdc2bab MD |
1190 | memset(index, 0, sizeof(struct packet_index)); |
1191 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1192 | goto error; | |
1193 | default: | |
087bc060 | 1194 | BT_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1195 | memset(index, 0, sizeof(struct packet_index)); |
1196 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1197 | goto error; | |
1198 | } | |
1199 | end: | |
1200 | return retstatus; | |
1201 | ||
1202 | error: | |
4c66436f MD |
1203 | if (bt_graph_is_canceled(lttng_live->graph)) { |
1204 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
1205 | } else { | |
1206 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1207 | } | |
7cdc2bab MD |
1208 | return retstatus; |
1209 | } | |
1210 | ||
1211 | BT_HIDDEN | |
1212 | enum bt_ctf_notif_iter_medium_status lttng_live_get_stream_bytes(struct lttng_live_component *lttng_live, | |
1213 | struct lttng_live_stream_iterator *stream, uint8_t *buf, uint64_t offset, | |
1214 | uint64_t req_len, uint64_t *recv_len) | |
1215 | { | |
1216 | enum bt_ctf_notif_iter_medium_status retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK; | |
1217 | struct lttng_viewer_cmd cmd; | |
1218 | struct lttng_viewer_get_packet rq; | |
1219 | struct lttng_viewer_trace_packet rp; | |
1220 | ssize_t ret_len; | |
1221 | uint32_t flags, status; | |
1222 | struct bt_live_viewer_connection *viewer_connection = | |
1223 | lttng_live->viewer_connection; | |
1224 | struct lttng_live_trace *trace = stream->trace; | |
1225 | ||
087bc060 | 1226 | BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1227 | offset, req_len); |
1228 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1229 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1230 | cmd.cmd_version = htobe32(0); | |
1231 | ||
1232 | memset(&rq, 0, sizeof(rq)); | |
1233 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1234 | rq.offset = htobe64(offset); | |
1235 | rq.len = htobe32(req_len); | |
1236 | ||
4c66436f | 1237 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 1238 | if (ret_len < 0) { |
087bc060 | 1239 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
1240 | goto error; |
1241 | } | |
1242 | assert(ret_len == sizeof(cmd)); | |
1243 | ||
4c66436f | 1244 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
7cdc2bab | 1245 | if (ret_len < 0) { |
087bc060 | 1246 | BT_LOGE("Error sending get_data request: %s", strerror(errno)); |
7cdc2bab MD |
1247 | goto error; |
1248 | } | |
1249 | assert(ret_len == sizeof(rq)); | |
1250 | ||
4c66436f | 1251 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1252 | if (ret_len == 0) { |
087bc060 | 1253 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1254 | goto error; |
1255 | } | |
1256 | if (ret_len < 0) { | |
087bc060 | 1257 | BT_LOGE("Error receiving get_data response: %s", strerror(errno)); |
7cdc2bab MD |
1258 | goto error; |
1259 | } | |
1260 | if (ret_len != sizeof(rp)) { | |
087bc060 MD |
1261 | BT_LOGE("get_data_packet: expected %zu" |
1262 | ", received %zd", sizeof(rp), | |
7cdc2bab MD |
1263 | ret_len); |
1264 | goto error; | |
1265 | } | |
1266 | ||
1267 | flags = be32toh(rp.flags); | |
1268 | status = be32toh(rp.status); | |
1269 | ||
1270 | switch (status) { | |
1271 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1272 | req_len = be32toh(rp.len); | |
087bc060 | 1273 | BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1274 | break; |
1275 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1276 | /* Unimplemented by relay daemon */ | |
087bc060 | 1277 | BT_LOGD("get_data_packet: retry"); |
7cdc2bab MD |
1278 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
1279 | goto end; | |
1280 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1281 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1282 | BT_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1283 | trace->new_metadata_needed = true; |
1284 | } | |
1285 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1286 | BT_LOGD("get_data_packet: new streams needed, try again later"); |
7cdc2bab MD |
1287 | lttng_live_need_new_streams(lttng_live); |
1288 | } | |
1289 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1290 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
1291 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; | |
1292 | goto end; | |
1293 | } | |
087bc060 | 1294 | BT_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1295 | goto error; |
1296 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
1297 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_EOF; | |
1298 | goto end; | |
1299 | default: | |
087bc060 | 1300 | BT_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1301 | goto error; |
1302 | } | |
1303 | ||
1304 | if (req_len == 0) { | |
1305 | goto error; | |
1306 | } | |
1307 | ||
4c66436f | 1308 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1309 | if (ret_len == 0) { |
087bc060 | 1310 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1311 | goto error; |
1312 | } | |
1313 | if (ret_len < 0) { | |
087bc060 | 1314 | BT_LOGE("Error receiving trace packet: %s", strerror(errno)); |
7cdc2bab MD |
1315 | goto error; |
1316 | } | |
1317 | assert(ret_len == req_len); | |
1318 | *recv_len = ret_len; | |
1319 | end: | |
1320 | return retstatus; | |
1321 | ||
1322 | error: | |
4c66436f MD |
1323 | if (bt_graph_is_canceled(lttng_live->graph)) { |
1324 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; | |
1325 | } else { | |
1326 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_ERROR; | |
1327 | } | |
7cdc2bab MD |
1328 | return retstatus; |
1329 | } | |
1330 | ||
1331 | /* | |
1332 | * Request new streams for a session. | |
1333 | */ | |
1334 | BT_HIDDEN | |
1335 | enum bt_ctf_lttng_live_iterator_status lttng_live_get_new_streams( | |
1336 | struct lttng_live_session *session) | |
1337 | { | |
1338 | enum bt_ctf_lttng_live_iterator_status status = | |
1339 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1340 | struct lttng_viewer_cmd cmd; | |
1341 | struct lttng_viewer_new_streams_request rq; | |
1342 | struct lttng_viewer_new_streams_response rp; | |
1343 | ssize_t ret_len; | |
1344 | struct lttng_live_component *lttng_live = session->lttng_live; | |
1345 | struct bt_live_viewer_connection *viewer_connection = | |
1346 | lttng_live->viewer_connection; | |
1347 | uint32_t streams_count; | |
1348 | ||
1349 | if (!session->new_streams_needed) { | |
1350 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1351 | } | |
1352 | ||
1353 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1354 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1355 | cmd.cmd_version = htobe32(0); | |
1356 | ||
1357 | memset(&rq, 0, sizeof(rq)); | |
1358 | rq.session_id = htobe64(session->id); | |
1359 | ||
4c66436f | 1360 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
7cdc2bab | 1361 | if (ret_len < 0) { |
087bc060 | 1362 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
1363 | goto error; |
1364 | } | |
1365 | assert(ret_len == sizeof(cmd)); | |
1366 | ||
4c66436f | 1367 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
7cdc2bab | 1368 | if (ret_len < 0) { |
087bc060 | 1369 | BT_LOGE("Error sending get_new_streams request: %s", strerror(errno)); |
7cdc2bab MD |
1370 | goto error; |
1371 | } | |
1372 | assert(ret_len == sizeof(rq)); | |
1373 | ||
4c66436f | 1374 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1375 | if (ret_len == 0) { |
087bc060 | 1376 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1377 | goto error; |
1378 | } | |
1379 | if (ret_len < 0) { | |
087bc060 | 1380 | BT_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1381 | goto error; |
1382 | } | |
1383 | assert(ret_len == sizeof(rp)); | |
1384 | ||
1385 | streams_count = be32toh(rp.streams_count); | |
1386 | ||
1387 | switch(be32toh(rp.status)) { | |
1388 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1389 | session->new_streams_needed = false; | |
1390 | break; | |
1391 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1392 | session->new_streams_needed = false; | |
1393 | goto end; | |
1394 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1395 | session->new_streams_needed = false; | |
1396 | session->closed = true; | |
1397 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
1398 | goto end; | |
1399 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
087bc060 | 1400 | BT_LOGE("get_new_streams error"); |
7cdc2bab MD |
1401 | goto error; |
1402 | default: | |
087bc060 | 1403 | BT_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1404 | goto error; |
1405 | } | |
1406 | ||
1407 | if (receive_streams(session, streams_count)) { | |
1408 | goto error; | |
1409 | } | |
1410 | end: | |
1411 | return status; | |
1412 | ||
1413 | error: | |
4c66436f | 1414 | if (bt_graph_is_canceled(lttng_live->graph)) { |
3cdf4234 | 1415 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1416 | } else { |
3cdf4234 | 1417 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1418 | } |
7cdc2bab MD |
1419 | return status; |
1420 | } | |
1421 | ||
1422 | BT_HIDDEN | |
1423 | struct bt_live_viewer_connection * | |
4c66436f MD |
1424 | bt_live_viewer_connection_create(const char *url, |
1425 | struct lttng_live_component *lttng_live) | |
7cdc2bab MD |
1426 | { |
1427 | struct bt_live_viewer_connection *viewer_connection; | |
1428 | ||
1429 | viewer_connection = g_new0(struct bt_live_viewer_connection, 1); | |
1430 | ||
1431 | bt_object_init(&viewer_connection->obj, connection_release); | |
1432 | viewer_connection->control_sock = -1; | |
1433 | viewer_connection->port = -1; | |
4c66436f | 1434 | viewer_connection->lttng_live = lttng_live; |
7cdc2bab MD |
1435 | viewer_connection->url = g_string_new(url); |
1436 | if (!viewer_connection->url) { | |
1437 | goto error; | |
1438 | } | |
1439 | ||
087bc060 | 1440 | BT_LOGD("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1441 | if (lttng_live_connect_viewer(viewer_connection)) { |
1442 | goto error_report; | |
1443 | } | |
087bc060 | 1444 | BT_LOGD("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1445 | return viewer_connection; |
1446 | ||
1447 | error_report: | |
087bc060 | 1448 | BT_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab MD |
1449 | error: |
1450 | g_free(viewer_connection); | |
1451 | return NULL; | |
1452 | } | |
1453 | ||
1454 | BT_HIDDEN | |
1455 | void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection *viewer_connection) | |
1456 | { | |
087bc060 | 1457 | BT_LOGD("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab MD |
1458 | lttng_live_disconnect_viewer(viewer_connection); |
1459 | g_string_free(viewer_connection->url, TRUE); | |
94b828f3 MD |
1460 | if (viewer_connection->relay_hostname) { |
1461 | g_string_free(viewer_connection->relay_hostname, TRUE); | |
1462 | } | |
1463 | if (viewer_connection->target_hostname) { | |
1464 | g_string_free(viewer_connection->target_hostname, TRUE); | |
1465 | } | |
1466 | if (viewer_connection->session_name) { | |
1467 | g_string_free(viewer_connection->session_name, TRUE); | |
1468 | } | |
7cdc2bab MD |
1469 | g_free(viewer_connection); |
1470 | } |