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