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