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> | |
39 | ||
087bc060 MD |
40 | #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-LIVE-VIEWER" |
41 | ||
7cdc2bab MD |
42 | #include "lttng-live-internal.h" |
43 | #include "viewer-connection.h" | |
44 | #include "lttng-viewer-abi.h" | |
45 | #include "data-stream.h" | |
46 | #include "metadata.h" | |
47 | ||
7cdc2bab MD |
48 | static ssize_t lttng_live_recv(int fd, void *buf, size_t len) |
49 | { | |
50 | ssize_t ret; | |
51 | size_t copied = 0, to_copy = len; | |
52 | ||
53 | do { | |
54 | ret = recv(fd, buf + copied, to_copy, 0); | |
55 | if (ret > 0) { | |
56 | assert(ret <= to_copy); | |
57 | copied += ret; | |
58 | to_copy -= ret; | |
59 | } | |
60 | } while ((ret > 0 && to_copy > 0) | |
61 | || (ret < 0 && errno == EINTR)); | |
62 | if (ret > 0) | |
63 | ret = copied; | |
64 | /* ret = 0 means orderly shutdown, ret < 0 is error. */ | |
65 | return ret; | |
66 | } | |
67 | ||
68 | static ssize_t lttng_live_send(int fd, const void *buf, size_t len) | |
69 | { | |
70 | ssize_t ret; | |
71 | ||
72 | do { | |
73 | ret = bt_send_nosigpipe(fd, buf, len); | |
74 | } while (ret < 0 && errno == EINTR); | |
75 | return ret; | |
76 | } | |
77 | ||
78 | /* | |
79 | * hostname parameter needs to hold MAXNAMLEN chars. | |
80 | */ | |
81 | static int parse_url(struct bt_live_viewer_connection *viewer_connection) | |
82 | { | |
83 | char remain[3][MAXNAMLEN]; | |
84 | int ret = -1, proto, proto_offset = 0; | |
85 | const char *path = viewer_connection->url->str; | |
86 | size_t path_len; | |
87 | ||
88 | if (!path) { | |
89 | goto end; | |
90 | } | |
91 | path_len = strlen(path); /* not accounting \0 */ | |
92 | ||
93 | /* | |
94 | * Since sscanf API does not allow easily checking string length | |
95 | * against a size defined by a macro. Test it beforehand on the | |
96 | * input. We know the output is always <= than the input length. | |
97 | */ | |
98 | if (path_len >= MAXNAMLEN) { | |
99 | goto end; | |
100 | } | |
101 | ret = sscanf(path, "net%d://", &proto); | |
102 | if (ret < 1) { | |
103 | proto = 4; | |
104 | /* net:// */ | |
105 | proto_offset = strlen("net://"); | |
106 | } else { | |
107 | /* net4:// or net6:// */ | |
108 | proto_offset = strlen("netX://"); | |
109 | } | |
110 | if (proto_offset > path_len) { | |
111 | goto end; | |
112 | } | |
113 | if (proto == 6) { | |
087bc060 | 114 | BT_LOGW("IPv6 is currently unsupported by lttng-live"); |
7cdc2bab MD |
115 | goto end; |
116 | } | |
117 | /* TODO : parse for IPv6 as well */ | |
118 | /* Parse the hostname or IP */ | |
119 | ret = sscanf(&path[proto_offset], "%[a-zA-Z.0-9%-]%s", | |
120 | viewer_connection->relay_hostname, remain[0]); | |
121 | if (ret == 2) { | |
122 | /* Optional port number */ | |
123 | switch (remain[0][0]) { | |
124 | case ':': | |
125 | ret = sscanf(remain[0], ":%d%s", &viewer_connection->port, remain[1]); | |
126 | /* Optional session ID with port number */ | |
127 | if (ret == 2) { | |
128 | ret = sscanf(remain[1], "/%s", remain[2]); | |
129 | /* Accept 0 or 1 (optional) */ | |
130 | if (ret < 0) { | |
131 | goto end; | |
132 | } | |
133 | } else if (ret == 0) { | |
087bc060 | 134 | BT_LOGW("Missing port number after delimitor ':'"); |
7cdc2bab MD |
135 | ret = -1; |
136 | goto end; | |
137 | } | |
138 | break; | |
139 | case '/': | |
140 | /* Optional session ID */ | |
141 | ret = sscanf(remain[0], "/%s", remain[2]); | |
142 | /* Accept 0 or 1 (optional) */ | |
143 | if (ret < 0) { | |
144 | goto end; | |
145 | } | |
146 | break; | |
147 | default: | |
087bc060 | 148 | BT_LOGW("wrong delimitor : %c", remain[0][0]); |
7cdc2bab MD |
149 | ret = -1; |
150 | goto end; | |
151 | } | |
152 | } | |
153 | ||
154 | if (viewer_connection->port < 0) { | |
155 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; | |
156 | } | |
157 | ||
158 | if (strlen(remain[2]) == 0) { | |
087bc060 MD |
159 | BT_LOGD("Connecting to hostname : %s, port : %d, " |
160 | "proto : IPv%d", | |
7cdc2bab MD |
161 | viewer_connection->relay_hostname, |
162 | viewer_connection->port, | |
163 | proto); | |
164 | ret = 0; | |
165 | goto end; | |
166 | } | |
167 | ret = sscanf(remain[2], "host/%[a-zA-Z.0-9%-]/%s", | |
168 | viewer_connection->target_hostname, | |
169 | viewer_connection->session_name); | |
170 | if (ret != 2) { | |
087bc060 MD |
171 | BT_LOGW("Format : " |
172 | "net://<hostname>/host/<target_hostname>/<session_name>"); | |
7cdc2bab MD |
173 | goto end; |
174 | } | |
175 | ||
087bc060 | 176 | BT_LOGD("Connecting to hostname : %s, port : %d, " |
7cdc2bab | 177 | "target hostname : %s, session name : %s, " |
087bc060 | 178 | "proto : IPv%d", |
7cdc2bab MD |
179 | viewer_connection->relay_hostname, |
180 | viewer_connection->port, | |
181 | viewer_connection->target_hostname, | |
182 | viewer_connection->session_name, proto); | |
183 | ret = 0; | |
184 | ||
185 | end: | |
186 | return ret; | |
187 | } | |
188 | ||
189 | static int lttng_live_handshake(struct bt_live_viewer_connection *viewer_connection) | |
190 | { | |
191 | struct lttng_viewer_cmd cmd; | |
192 | struct lttng_viewer_connect connect; | |
193 | int ret; | |
194 | ssize_t ret_len; | |
195 | ||
196 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
197 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
198 | cmd.cmd_version = htobe32(0); | |
199 | ||
200 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
201 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
202 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
203 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
204 | ||
205 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
206 | if (ret_len < 0) { | |
087bc060 | 207 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
208 | goto error; |
209 | } | |
210 | assert(ret_len == sizeof(cmd)); | |
211 | ||
212 | ret_len = lttng_live_send(viewer_connection->control_sock, &connect, sizeof(connect)); | |
213 | if (ret_len < 0) { | |
087bc060 | 214 | BT_LOGE("Error sending version: %s", strerror(errno)); |
7cdc2bab MD |
215 | goto error; |
216 | } | |
217 | assert(ret_len == sizeof(connect)); | |
218 | ||
219 | ret_len = lttng_live_recv(viewer_connection->control_sock, &connect, sizeof(connect)); | |
220 | if (ret_len == 0) { | |
087bc060 | 221 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
222 | goto error; |
223 | } | |
224 | if (ret_len < 0) { | |
087bc060 | 225 | BT_LOGE("Error receiving version: %s", strerror(errno)); |
7cdc2bab MD |
226 | goto error; |
227 | } | |
228 | assert(ret_len == sizeof(connect)); | |
229 | ||
087bc060 | 230 | BT_LOGD("Received viewer session ID : %" PRIu64, |
7cdc2bab | 231 | be64toh(connect.viewer_session_id)); |
087bc060 | 232 | BT_LOGD("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
233 | be32toh(connect.minor)); |
234 | ||
235 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
087bc060 | 236 | BT_LOGE("Incompatible lttng-relayd protocol"); |
7cdc2bab MD |
237 | goto error; |
238 | } | |
239 | /* Use the smallest protocol version implemented. */ | |
240 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
241 | viewer_connection->minor = be32toh(connect.minor); | |
242 | } else { | |
243 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
244 | } | |
245 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
246 | ret = 0; | |
247 | return ret; | |
248 | ||
249 | error: | |
087bc060 | 250 | BT_LOGE("Unable to establish connection"); |
7cdc2bab MD |
251 | return -1; |
252 | } | |
253 | ||
254 | static int lttng_live_connect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
255 | { | |
256 | struct hostent *host; | |
257 | struct sockaddr_in server_addr; | |
258 | int ret; | |
259 | ||
260 | if (parse_url(viewer_connection)) { | |
261 | goto error; | |
262 | } | |
263 | ||
264 | host = gethostbyname(viewer_connection->relay_hostname); | |
265 | if (!host) { | |
087bc060 | 266 | BT_LOGE("Cannot lookup hostname %s", |
7cdc2bab MD |
267 | viewer_connection->relay_hostname); |
268 | goto error; | |
269 | } | |
270 | ||
271 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { | |
087bc060 | 272 | BT_LOGE("Socket creation failed: %s", strerror(errno)); |
7cdc2bab MD |
273 | goto error; |
274 | } | |
275 | ||
276 | server_addr.sin_family = AF_INET; | |
277 | server_addr.sin_port = htons(viewer_connection->port); | |
278 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
279 | memset(&(server_addr.sin_zero), 0, 8); | |
280 | ||
281 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
282 | sizeof(struct sockaddr)) == -1) { | |
087bc060 | 283 | BT_LOGE("Connection failed: %s", strerror(errno)); |
7cdc2bab MD |
284 | goto error; |
285 | } | |
286 | if (lttng_live_handshake(viewer_connection)) { | |
287 | goto error; | |
288 | } | |
289 | ||
290 | ret = 0; | |
291 | ||
292 | return ret; | |
293 | ||
294 | error: | |
295 | if (viewer_connection->control_sock >= 0) { | |
296 | if (close(viewer_connection->control_sock)) { | |
087bc060 | 297 | BT_LOGE("Close: %s", strerror(errno)); |
7cdc2bab MD |
298 | } |
299 | } | |
300 | viewer_connection->control_sock = -1; | |
301 | return -1; | |
302 | } | |
303 | ||
304 | static void lttng_live_disconnect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
305 | { | |
306 | if (viewer_connection->control_sock < 0) { | |
307 | return; | |
308 | } | |
309 | if (close(viewer_connection->control_sock)) { | |
087bc060 | 310 | BT_LOGE("Close: %s", strerror(errno)); |
7cdc2bab MD |
311 | viewer_connection->control_sock = -1; |
312 | } | |
313 | } | |
314 | ||
315 | static void connection_release(struct bt_object *obj) | |
316 | { | |
317 | struct bt_live_viewer_connection *conn = | |
318 | container_of(obj, struct bt_live_viewer_connection, obj); | |
319 | ||
320 | bt_live_viewer_connection_destroy(conn); | |
321 | } | |
322 | ||
323 | static | |
324 | enum bt_value_status list_update_session(struct bt_value *results, | |
325 | const struct lttng_viewer_session *session, | |
326 | bool *_found) | |
327 | { | |
328 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
329 | struct bt_value *map = NULL; | |
330 | struct bt_value *hostname = NULL; | |
331 | struct bt_value *session_name = NULL; | |
332 | struct bt_value *btval = NULL; | |
333 | int i, len; | |
334 | bool found = false; | |
335 | ||
336 | len = bt_value_array_size(results); | |
337 | if (len < 0) { | |
338 | ret = BT_VALUE_STATUS_ERROR; | |
339 | goto end; | |
340 | } | |
341 | for (i = 0; i < len; i++) { | |
342 | const char *hostname_str = NULL; | |
343 | const char *session_name_str = NULL; | |
344 | ||
345 | map = bt_value_array_get(results, (size_t) i); | |
346 | if (!map) { | |
347 | ret = BT_VALUE_STATUS_ERROR; | |
348 | goto end; | |
349 | } | |
350 | hostname = bt_value_map_get(map, "target-hostname"); | |
351 | if (!hostname) { | |
352 | ret = BT_VALUE_STATUS_ERROR; | |
353 | goto end; | |
354 | } | |
355 | session_name = bt_value_map_get(map, "session-name"); | |
356 | if (!session_name) { | |
357 | ret = BT_VALUE_STATUS_ERROR; | |
358 | goto end; | |
359 | } | |
360 | ret = bt_value_string_get(hostname, &hostname_str); | |
361 | if (ret != BT_VALUE_STATUS_OK) { | |
362 | goto end; | |
363 | } | |
364 | ret = bt_value_string_get(session_name, &session_name_str); | |
365 | if (ret != BT_VALUE_STATUS_OK) { | |
366 | goto end; | |
367 | } | |
368 | ||
369 | if (!strcmp(session->hostname, hostname_str) | |
370 | && !strcmp(session->session_name, | |
371 | session_name_str)) { | |
372 | int64_t val; | |
373 | uint32_t streams = be32toh(session->streams); | |
374 | uint32_t clients = be32toh(session->clients); | |
375 | ||
376 | found = true; | |
377 | ||
378 | btval = bt_value_map_get(map, "stream-count"); | |
379 | if (!btval) { | |
380 | ret = BT_VALUE_STATUS_ERROR; | |
381 | goto end; | |
382 | } | |
383 | ret = bt_value_integer_get(btval, &val); | |
384 | if (ret != BT_VALUE_STATUS_OK) { | |
385 | goto end; | |
386 | } | |
387 | /* sum */ | |
388 | val += streams; | |
389 | ret = bt_value_integer_set(btval, val); | |
390 | if (ret != BT_VALUE_STATUS_OK) { | |
391 | goto end; | |
392 | } | |
393 | BT_PUT(btval); | |
394 | ||
395 | btval = bt_value_map_get(map, "client-count"); | |
396 | if (!btval) { | |
397 | ret = BT_VALUE_STATUS_ERROR; | |
398 | goto end; | |
399 | } | |
400 | ret = bt_value_integer_get(btval, &val); | |
401 | if (ret != BT_VALUE_STATUS_OK) { | |
402 | goto end; | |
403 | } | |
404 | /* max */ | |
405 | val = max_t(int64_t, clients, val); | |
406 | ret = bt_value_integer_set(btval, val); | |
407 | if (ret != BT_VALUE_STATUS_OK) { | |
408 | goto end; | |
409 | } | |
410 | BT_PUT(btval); | |
411 | } | |
412 | ||
413 | BT_PUT(hostname); | |
414 | BT_PUT(session_name); | |
415 | BT_PUT(map); | |
416 | ||
417 | if (found) { | |
418 | break; | |
419 | } | |
420 | } | |
421 | end: | |
422 | BT_PUT(btval); | |
423 | BT_PUT(hostname); | |
424 | BT_PUT(session_name); | |
425 | BT_PUT(map); | |
426 | *_found = found; | |
427 | return ret; | |
428 | } | |
429 | ||
430 | static | |
431 | enum bt_value_status list_append_session(struct bt_value *results, | |
432 | GString *base_url, | |
433 | const struct lttng_viewer_session *session) | |
434 | { | |
435 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
436 | struct bt_value *map = NULL; | |
437 | GString *url = NULL; | |
438 | bool found = false; | |
439 | ||
440 | /* | |
441 | * If the session already exists, add the stream count to it, | |
442 | * and do max of client counts. | |
443 | */ | |
444 | ret = list_update_session(results, session, &found); | |
445 | if (ret != BT_VALUE_STATUS_OK || found) { | |
446 | goto end; | |
447 | } | |
448 | ||
449 | map = bt_value_map_create(); | |
450 | if (!map) { | |
451 | ret = BT_VALUE_STATUS_ERROR; | |
452 | goto end; | |
453 | } | |
454 | ||
455 | if (base_url->len < 1) { | |
456 | ret = BT_VALUE_STATUS_ERROR; | |
457 | goto end; | |
458 | } | |
459 | /* | |
460 | * key = "url", | |
461 | * value = <string>, | |
462 | */ | |
463 | url = g_string_new(base_url->str); | |
464 | g_string_append(url, "/host/"); | |
465 | g_string_append(url, session->hostname); | |
466 | g_string_append_c(url, '/'); | |
467 | g_string_append(url, session->session_name); | |
468 | ||
469 | ret = bt_value_map_insert_string(map, "url", url->str); | |
470 | if (ret != BT_VALUE_STATUS_OK) { | |
471 | goto end; | |
472 | } | |
473 | ||
474 | /* | |
475 | * key = "target-hostname", | |
476 | * value = <string>, | |
477 | */ | |
478 | ret = bt_value_map_insert_string(map, "target-hostname", | |
479 | session->hostname); | |
480 | if (ret != BT_VALUE_STATUS_OK) { | |
481 | goto end; | |
482 | } | |
483 | ||
484 | /* | |
485 | * key = "session-name", | |
486 | * value = <string>, | |
487 | */ | |
488 | ret = bt_value_map_insert_string(map, "session-name", | |
489 | session->session_name); | |
490 | if (ret != BT_VALUE_STATUS_OK) { | |
491 | goto end; | |
492 | } | |
493 | ||
494 | /* | |
495 | * key = "timer-us", | |
496 | * value = <integer>, | |
497 | */ | |
498 | { | |
499 | uint32_t live_timer = be32toh(session->live_timer); | |
500 | ||
501 | ret = bt_value_map_insert_integer(map, "timer-us", | |
502 | live_timer); | |
503 | if (ret != BT_VALUE_STATUS_OK) { | |
504 | goto end; | |
505 | } | |
506 | } | |
507 | ||
508 | /* | |
509 | * key = "stream-count", | |
510 | * value = <integer>, | |
511 | */ | |
512 | { | |
513 | uint32_t streams = be32toh(session->streams); | |
514 | ||
515 | ret = bt_value_map_insert_integer(map, "stream-count", | |
516 | streams); | |
517 | if (ret != BT_VALUE_STATUS_OK) { | |
518 | goto end; | |
519 | } | |
520 | } | |
521 | ||
522 | ||
523 | /* | |
524 | * key = "client-count", | |
525 | * value = <integer>, | |
526 | */ | |
527 | { | |
528 | uint32_t clients = be32toh(session->clients); | |
529 | ||
530 | ret = bt_value_map_insert_integer(map, "client-count", | |
531 | clients); | |
532 | if (ret != BT_VALUE_STATUS_OK) { | |
533 | goto end; | |
534 | } | |
535 | } | |
536 | ||
537 | ret = bt_value_array_append(results, map); | |
538 | end: | |
539 | if (url) { | |
540 | g_string_free(url, TRUE); | |
541 | } | |
542 | BT_PUT(map); | |
543 | return ret; | |
544 | } | |
545 | ||
546 | /* | |
547 | * Data structure returned: | |
548 | * | |
549 | * { | |
550 | * <array> = { | |
551 | * [n] = { | |
552 | * <map> = { | |
553 | * { | |
554 | * key = "url", | |
555 | * value = <string>, | |
556 | * }, | |
557 | * { | |
558 | * key = "target-hostname", | |
559 | * value = <string>, | |
560 | * }, | |
561 | * { | |
562 | * key = "session-name", | |
563 | * value = <string>, | |
564 | * }, | |
565 | * { | |
566 | * key = "timer-us", | |
567 | * value = <integer>, | |
568 | * }, | |
569 | * { | |
570 | * key = "stream-count", | |
571 | * value = <integer>, | |
572 | * }, | |
573 | * { | |
574 | * key = "client-count", | |
575 | * value = <integer>, | |
576 | * }, | |
577 | * }, | |
578 | * } | |
579 | * } | |
580 | */ | |
581 | ||
582 | BT_HIDDEN | |
583 | struct bt_value *bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection *viewer_connection) | |
584 | { | |
585 | struct bt_value *results = NULL; | |
586 | struct lttng_viewer_cmd cmd; | |
587 | struct lttng_viewer_list_sessions list; | |
588 | uint32_t i, sessions_count; | |
589 | ssize_t ret_len; | |
590 | ||
591 | if (lttng_live_handshake(viewer_connection)) { | |
592 | goto error; | |
593 | } | |
594 | ||
595 | results = bt_value_array_create(); | |
596 | if (!results) { | |
087bc060 | 597 | BT_LOGE("Error creating array"); |
7cdc2bab MD |
598 | goto error; |
599 | } | |
600 | ||
601 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
602 | cmd.data_size = htobe64((uint64_t) 0); | |
603 | cmd.cmd_version = htobe32(0); | |
604 | ||
605 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
606 | if (ret_len < 0) { | |
087bc060 | 607 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
608 | goto error; |
609 | } | |
610 | assert(ret_len == sizeof(cmd)); | |
611 | ||
612 | ret_len = lttng_live_recv(viewer_connection->control_sock, &list, sizeof(list)); | |
613 | if (ret_len == 0) { | |
087bc060 | 614 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
615 | goto error; |
616 | } | |
617 | if (ret_len < 0) { | |
087bc060 | 618 | BT_LOGE("Error receiving session list: %s", strerror(errno)); |
7cdc2bab MD |
619 | goto error; |
620 | } | |
621 | assert(ret_len == sizeof(list)); | |
622 | ||
623 | sessions_count = be32toh(list.sessions_count); | |
624 | for (i = 0; i < sessions_count; i++) { | |
625 | struct lttng_viewer_session lsession; | |
626 | ||
627 | ret_len = lttng_live_recv(viewer_connection->control_sock, | |
628 | &lsession, sizeof(lsession)); | |
629 | if (ret_len == 0) { | |
087bc060 | 630 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
631 | goto error; |
632 | } | |
633 | if (ret_len < 0) { | |
087bc060 | 634 | BT_LOGE("Error receiving session: %s", strerror(errno)); |
7cdc2bab MD |
635 | goto error; |
636 | } | |
637 | assert(ret_len == sizeof(lsession)); | |
638 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
639 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
640 | if (list_append_session(results, | |
641 | viewer_connection->url, &lsession) | |
642 | != BT_VALUE_STATUS_OK) { | |
643 | goto error; | |
644 | } | |
645 | } | |
646 | goto end; | |
647 | error: | |
648 | BT_PUT(results); | |
649 | end: | |
650 | return results; | |
651 | } | |
652 | ||
653 | static | |
654 | int lttng_live_query_session_ids(struct lttng_live_component *lttng_live) | |
655 | { | |
656 | struct lttng_viewer_cmd cmd; | |
657 | struct lttng_viewer_list_sessions list; | |
658 | struct lttng_viewer_session lsession; | |
659 | uint32_t i, sessions_count; | |
660 | ssize_t ret_len; | |
661 | uint64_t session_id; | |
662 | struct bt_live_viewer_connection *viewer_connection = | |
663 | lttng_live->viewer_connection; | |
664 | ||
665 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
666 | cmd.data_size = htobe64((uint64_t) 0); | |
667 | cmd.cmd_version = htobe32(0); | |
668 | ||
669 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
670 | if (ret_len < 0) { | |
087bc060 | 671 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
672 | goto error; |
673 | } | |
674 | assert(ret_len == sizeof(cmd)); | |
675 | ||
676 | ret_len = lttng_live_recv(viewer_connection->control_sock, &list, sizeof(list)); | |
677 | if (ret_len == 0) { | |
087bc060 | 678 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
679 | goto error; |
680 | } | |
681 | if (ret_len < 0) { | |
087bc060 | 682 | BT_LOGE("Error receiving session list: %s", strerror(errno)); |
7cdc2bab MD |
683 | goto error; |
684 | } | |
685 | assert(ret_len == sizeof(list)); | |
686 | ||
687 | sessions_count = be32toh(list.sessions_count); | |
688 | for (i = 0; i < sessions_count; i++) { | |
689 | ret_len = lttng_live_recv(viewer_connection->control_sock, | |
690 | &lsession, sizeof(lsession)); | |
691 | if (ret_len == 0) { | |
087bc060 | 692 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
693 | goto error; |
694 | } | |
695 | if (ret_len < 0) { | |
087bc060 | 696 | BT_LOGE("Error receiving session: %s", strerror(errno)); |
7cdc2bab MD |
697 | goto error; |
698 | } | |
699 | assert(ret_len == sizeof(lsession)); | |
700 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
701 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
702 | session_id = be64toh(lsession.id); | |
703 | ||
704 | if ((strncmp(lsession.session_name, | |
705 | viewer_connection->session_name, | |
706 | MAXNAMLEN) == 0) && (strncmp(lsession.hostname, | |
707 | viewer_connection->target_hostname, | |
708 | MAXNAMLEN) == 0)) { | |
709 | if (lttng_live_add_session(lttng_live, session_id)) { | |
710 | goto error; | |
711 | } | |
712 | } | |
713 | } | |
714 | ||
715 | return 0; | |
716 | ||
717 | error: | |
087bc060 | 718 | BT_LOGE("Unable to query session ids"); |
7cdc2bab MD |
719 | return -1; |
720 | } | |
721 | ||
722 | BT_HIDDEN | |
723 | int lttng_live_create_viewer_session(struct lttng_live_component *lttng_live) | |
724 | { | |
725 | struct lttng_viewer_cmd cmd; | |
726 | struct lttng_viewer_create_session_response resp; | |
727 | ssize_t ret_len; | |
728 | struct bt_live_viewer_connection *viewer_connection = | |
729 | lttng_live->viewer_connection; | |
730 | ||
731 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
732 | cmd.data_size = htobe64((uint64_t) 0); | |
733 | cmd.cmd_version = htobe32(0); | |
734 | ||
735 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
736 | if (ret_len < 0) { | |
087bc060 | 737 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
738 | goto error; |
739 | } | |
740 | assert(ret_len == sizeof(cmd)); | |
741 | ||
742 | ret_len = lttng_live_recv(viewer_connection->control_sock, &resp, sizeof(resp)); | |
743 | if (ret_len == 0) { | |
087bc060 | 744 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
745 | goto error; |
746 | } | |
747 | if (ret_len < 0) { | |
087bc060 | 748 | BT_LOGE("Error receiving create session reply: %s", strerror(errno)); |
7cdc2bab MD |
749 | goto error; |
750 | } | |
751 | assert(ret_len == sizeof(resp)); | |
752 | ||
753 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
087bc060 | 754 | BT_LOGE("Error creating viewer session"); |
7cdc2bab MD |
755 | goto error; |
756 | } | |
757 | if (lttng_live_query_session_ids(lttng_live)) { | |
758 | goto error; | |
759 | } | |
760 | ||
761 | return 0; | |
762 | ||
763 | error: | |
764 | return -1; | |
765 | } | |
766 | ||
767 | static | |
768 | int receive_streams(struct lttng_live_session *session, | |
769 | uint32_t stream_count) | |
770 | { | |
771 | ssize_t ret_len; | |
772 | uint32_t i; | |
773 | struct lttng_live_component *lttng_live = session->lttng_live; | |
774 | struct bt_live_viewer_connection *viewer_connection = | |
775 | lttng_live->viewer_connection; | |
776 | ||
087bc060 | 777 | BT_LOGD("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
778 | for (i = 0; i < stream_count; i++) { |
779 | struct lttng_viewer_stream stream; | |
780 | struct lttng_live_stream_iterator *live_stream; | |
781 | uint64_t stream_id; | |
782 | uint64_t ctf_trace_id; | |
783 | ||
784 | ret_len = lttng_live_recv(viewer_connection->control_sock, &stream, sizeof(stream)); | |
785 | if (ret_len == 0) { | |
087bc060 | 786 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
787 | goto error; |
788 | } | |
789 | if (ret_len < 0) { | |
087bc060 | 790 | BT_LOGE("Error receiving stream"); |
7cdc2bab MD |
791 | goto error; |
792 | } | |
793 | assert(ret_len == sizeof(stream)); | |
794 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
795 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
796 | stream_id = be64toh(stream.id); | |
797 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
798 | ||
799 | if (stream.metadata_flag) { | |
087bc060 | 800 | BT_LOGD(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
801 | stream_id, stream.path_name, |
802 | stream.channel_name); | |
803 | if (lttng_live_metadata_create_stream(session, | |
804 | ctf_trace_id, stream_id)) { | |
087bc060 | 805 | BT_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
806 | |
807 | goto error; | |
808 | } | |
809 | session->lazy_stream_notif_init = true; | |
810 | } else { | |
087bc060 | 811 | BT_LOGD(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
812 | stream_id, stream.path_name, |
813 | stream.channel_name); | |
814 | live_stream = lttng_live_stream_iterator_create(session, | |
815 | ctf_trace_id, stream_id); | |
816 | if (!live_stream) { | |
087bc060 | 817 | BT_LOGE("Error creating streamn"); |
7cdc2bab MD |
818 | goto error; |
819 | } | |
820 | } | |
821 | } | |
822 | return 0; | |
823 | ||
824 | error: | |
825 | return -1; | |
826 | } | |
827 | ||
828 | BT_HIDDEN | |
829 | int lttng_live_attach_session(struct lttng_live_session *session) | |
830 | { | |
831 | struct lttng_viewer_cmd cmd; | |
832 | struct lttng_viewer_attach_session_request rq; | |
833 | struct lttng_viewer_attach_session_response rp; | |
834 | ssize_t ret_len; | |
835 | struct lttng_live_component *lttng_live = session->lttng_live; | |
836 | struct bt_live_viewer_connection *viewer_connection = | |
837 | lttng_live->viewer_connection; | |
838 | uint64_t session_id = session->id; | |
839 | uint32_t streams_count; | |
840 | ||
841 | if (session->attached) { | |
842 | return 0; | |
843 | } | |
844 | ||
845 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); | |
846 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
847 | cmd.cmd_version = htobe32(0); | |
848 | ||
849 | memset(&rq, 0, sizeof(rq)); | |
850 | rq.session_id = htobe64(session_id); | |
851 | // TODO: add cmd line parameter to select seek beginning | |
852 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
853 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
854 | ||
855 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
856 | if (ret_len < 0) { | |
087bc060 | 857 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
858 | goto error; |
859 | } | |
860 | assert(ret_len == sizeof(cmd)); | |
861 | ||
862 | ret_len = lttng_live_send(viewer_connection->control_sock, &rq, sizeof(rq)); | |
863 | if (ret_len < 0) { | |
087bc060 | 864 | BT_LOGE("Error sending attach request: %s", strerror(errno)); |
7cdc2bab MD |
865 | goto error; |
866 | } | |
867 | assert(ret_len == sizeof(rq)); | |
868 | ||
869 | ret_len = lttng_live_recv(viewer_connection->control_sock, &rp, sizeof(rp)); | |
870 | if (ret_len == 0) { | |
087bc060 | 871 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
872 | goto error; |
873 | } | |
874 | if (ret_len < 0) { | |
087bc060 | 875 | BT_LOGE("Error receiving attach response: %s", strerror(errno)); |
7cdc2bab MD |
876 | goto error; |
877 | } | |
878 | assert(ret_len == sizeof(rp)); | |
879 | ||
880 | streams_count = be32toh(rp.streams_count); | |
881 | switch(be32toh(rp.status)) { | |
882 | case LTTNG_VIEWER_ATTACH_OK: | |
883 | break; | |
884 | case LTTNG_VIEWER_ATTACH_UNK: | |
087bc060 | 885 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
886 | goto error; |
887 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
087bc060 | 888 | BT_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
889 | goto error; |
890 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
087bc060 | 891 | BT_LOGW("Not a live session"); |
7cdc2bab MD |
892 | goto error; |
893 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
087bc060 | 894 | BT_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
895 | goto error; |
896 | default: | |
087bc060 | 897 | BT_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
898 | goto error; |
899 | } | |
900 | ||
901 | /* We receive the initial list of streams. */ | |
902 | if (receive_streams(session, streams_count)) { | |
903 | goto error; | |
904 | } | |
905 | ||
906 | session->attached = true; | |
907 | session->new_streams_needed = false; | |
908 | ||
909 | return 0; | |
910 | ||
911 | error: | |
912 | return -1; | |
913 | } | |
914 | ||
915 | BT_HIDDEN | |
916 | int lttng_live_detach_session(struct lttng_live_session *session) | |
917 | { | |
918 | struct lttng_viewer_cmd cmd; | |
919 | struct lttng_viewer_detach_session_request rq; | |
920 | struct lttng_viewer_detach_session_response rp; | |
921 | ssize_t ret_len; | |
922 | struct lttng_live_component *lttng_live = session->lttng_live; | |
923 | struct bt_live_viewer_connection *viewer_connection = | |
924 | lttng_live->viewer_connection; | |
925 | uint64_t session_id = session->id; | |
926 | ||
927 | if (!session->attached) { | |
928 | return 0; | |
929 | } | |
930 | ||
931 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
932 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
933 | cmd.cmd_version = htobe32(0); | |
934 | ||
935 | memset(&rq, 0, sizeof(rq)); | |
936 | rq.session_id = htobe64(session_id); | |
937 | ||
938 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
939 | if (ret_len < 0) { | |
087bc060 | 940 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
941 | goto error; |
942 | } | |
943 | assert(ret_len == sizeof(cmd)); | |
944 | ||
945 | ret_len = lttng_live_send(viewer_connection->control_sock, &rq, sizeof(rq)); | |
946 | if (ret_len < 0) { | |
087bc060 | 947 | BT_LOGE("Error sending detach request: %s", strerror(errno)); |
7cdc2bab MD |
948 | goto error; |
949 | } | |
950 | assert(ret_len == sizeof(rq)); | |
951 | ||
952 | ret_len = lttng_live_recv(viewer_connection->control_sock, &rp, sizeof(rp)); | |
953 | if (ret_len == 0) { | |
087bc060 | 954 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
955 | goto error; |
956 | } | |
957 | if (ret_len < 0) { | |
087bc060 | 958 | BT_LOGE("Error receiving detach response: %s", strerror(errno)); |
7cdc2bab MD |
959 | goto error; |
960 | } | |
961 | assert(ret_len == sizeof(rp)); | |
962 | ||
963 | switch(be32toh(rp.status)) { | |
964 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
965 | break; | |
966 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
087bc060 | 967 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
968 | goto error; |
969 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
087bc060 | 970 | BT_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
971 | goto error; |
972 | default: | |
087bc060 | 973 | BT_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
974 | goto error; |
975 | } | |
976 | ||
977 | session->attached = false; | |
978 | ||
979 | return 0; | |
980 | ||
981 | error: | |
982 | return -1; | |
983 | } | |
984 | ||
985 | BT_HIDDEN | |
986 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
987 | FILE *fp) | |
988 | { | |
989 | uint64_t len = 0; | |
990 | int ret; | |
991 | struct lttng_viewer_cmd cmd; | |
992 | struct lttng_viewer_get_metadata rq; | |
993 | struct lttng_viewer_metadata_packet rp; | |
994 | char *data = NULL; | |
995 | ssize_t ret_len; | |
996 | struct lttng_live_session *session = trace->session; | |
997 | struct lttng_live_component *lttng_live = session->lttng_live; | |
998 | struct lttng_live_metadata *metadata = trace->metadata; | |
999 | struct bt_live_viewer_connection *viewer_connection = | |
1000 | lttng_live->viewer_connection; | |
1001 | ||
1002 | rq.stream_id = htobe64(metadata->stream_id); | |
1003 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1004 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1005 | cmd.cmd_version = htobe32(0); | |
1006 | ||
1007 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
1008 | if (ret_len < 0) { | |
087bc060 | 1009 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
1010 | goto error; |
1011 | } | |
1012 | assert(ret_len == sizeof(cmd)); | |
1013 | ||
1014 | ret_len = lttng_live_send(viewer_connection->control_sock, &rq, sizeof(rq)); | |
1015 | if (ret_len < 0) { | |
087bc060 | 1016 | BT_LOGE("Error sending get_metadata request: %s", strerror(errno)); |
7cdc2bab MD |
1017 | goto error; |
1018 | } | |
1019 | assert(ret_len == sizeof(rq)); | |
1020 | ||
1021 | ret_len = lttng_live_recv(viewer_connection->control_sock, &rp, sizeof(rp)); | |
1022 | if (ret_len == 0) { | |
087bc060 | 1023 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1024 | goto error; |
1025 | } | |
1026 | if (ret_len < 0) { | |
087bc060 | 1027 | BT_LOGE("Error receiving get_metadata response: %s", strerror(errno)); |
7cdc2bab MD |
1028 | goto error; |
1029 | } | |
1030 | assert(ret_len == sizeof(rp)); | |
1031 | ||
1032 | switch (be32toh(rp.status)) { | |
1033 | case LTTNG_VIEWER_METADATA_OK: | |
087bc060 | 1034 | BT_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1035 | break; |
1036 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
087bc060 | 1037 | BT_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1038 | ret = 0; |
1039 | goto end; | |
1040 | case LTTNG_VIEWER_METADATA_ERR: | |
087bc060 | 1041 | BT_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1042 | goto error; |
1043 | default: | |
087bc060 | 1044 | BT_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1045 | goto error; |
1046 | } | |
1047 | ||
1048 | len = be64toh(rp.len); | |
087bc060 | 1049 | BT_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1050 | if (len <= 0) { |
1051 | goto error; | |
1052 | } | |
1053 | ||
1054 | data = zmalloc(len); | |
1055 | if (!data) { | |
087bc060 | 1056 | BT_LOGE("relay data zmalloc: %s", strerror(errno)); |
7cdc2bab MD |
1057 | goto error; |
1058 | } | |
1059 | ret_len = lttng_live_recv(viewer_connection->control_sock, data, len); | |
1060 | if (ret_len == 0) { | |
087bc060 | 1061 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1062 | goto error_free_data; |
1063 | } | |
1064 | if (ret_len < 0) { | |
087bc060 | 1065 | BT_LOGE("Error receiving trace packet: %s", strerror(errno)); |
7cdc2bab MD |
1066 | goto error_free_data; |
1067 | } | |
1068 | assert(ret_len == len); | |
1069 | ||
1070 | do { | |
1071 | ret_len = fwrite(data, 1, len, fp); | |
1072 | } while (ret_len < 0 && errno == EINTR); | |
1073 | if (ret_len < 0) { | |
087bc060 | 1074 | BT_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1075 | goto error_free_data; |
1076 | } | |
1077 | assert(ret_len == len); | |
1078 | free(data); | |
1079 | ret = len; | |
1080 | end: | |
1081 | return ret; | |
1082 | ||
1083 | error_free_data: | |
1084 | free(data); | |
1085 | error: | |
1086 | return -1; | |
1087 | } | |
1088 | ||
1089 | /* | |
1090 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1091 | */ | |
1092 | static | |
1093 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1094 | struct packet_index *pindex) | |
1095 | { | |
1096 | assert(lindex); | |
1097 | assert(pindex); | |
1098 | ||
1099 | pindex->offset = be64toh(lindex->offset); | |
1100 | pindex->packet_size = be64toh(lindex->packet_size); | |
1101 | pindex->content_size = be64toh(lindex->content_size); | |
1102 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1103 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1104 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1105 | } | |
1106 | ||
1107 | BT_HIDDEN | |
1108 | enum bt_ctf_lttng_live_iterator_status lttng_live_get_next_index(struct lttng_live_component *lttng_live, | |
1109 | struct lttng_live_stream_iterator *stream, | |
1110 | struct packet_index *index) | |
1111 | { | |
1112 | struct lttng_viewer_cmd cmd; | |
1113 | struct lttng_viewer_get_next_index rq; | |
1114 | ssize_t ret_len; | |
1115 | struct lttng_viewer_index rp; | |
1116 | uint32_t flags, status; | |
1117 | enum bt_ctf_lttng_live_iterator_status retstatus = | |
1118 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1119 | struct bt_live_viewer_connection *viewer_connection = | |
1120 | lttng_live->viewer_connection; | |
1121 | struct lttng_live_trace *trace = stream->trace; | |
1122 | ||
1123 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1124 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1125 | cmd.cmd_version = htobe32(0); | |
1126 | ||
1127 | memset(&rq, 0, sizeof(rq)); | |
1128 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1129 | ||
1130 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
1131 | if (ret_len < 0) { | |
087bc060 | 1132 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
1133 | goto error; |
1134 | } | |
1135 | assert(ret_len == sizeof(cmd)); | |
1136 | ||
1137 | ret_len = lttng_live_send(viewer_connection->control_sock, &rq, sizeof(rq)); | |
1138 | if (ret_len < 0) { | |
087bc060 | 1139 | BT_LOGE("Error sending get_next_index request: %s", strerror(errno)); |
7cdc2bab MD |
1140 | goto error; |
1141 | } | |
1142 | assert(ret_len == sizeof(rq)); | |
1143 | ||
1144 | ret_len = lttng_live_recv(viewer_connection->control_sock, &rp, sizeof(rp)); | |
1145 | if (ret_len == 0) { | |
087bc060 | 1146 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1147 | goto error; |
1148 | } | |
1149 | if (ret_len < 0) { | |
087bc060 | 1150 | BT_LOGE("Error receiving get_next_index response: %s", strerror(errno)); |
7cdc2bab MD |
1151 | goto error; |
1152 | } | |
1153 | assert(ret_len == sizeof(rp)); | |
1154 | ||
1155 | flags = be32toh(rp.flags); | |
1156 | status = be32toh(rp.status); | |
1157 | ||
1158 | switch (status) { | |
1159 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1160 | { | |
1161 | uint64_t ctf_stream_class_id; | |
1162 | ||
087bc060 | 1163 | BT_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1164 | memset(index, 0, sizeof(struct packet_index)); |
1165 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
1166 | stream->current_inactivity_timestamp = index->ts_cycles.timestamp_end; | |
1167 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1168 | if (stream->ctf_stream_class_id != -1ULL) { | |
1169 | assert(stream->ctf_stream_class_id == | |
1170 | ctf_stream_class_id); | |
1171 | } else { | |
1172 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1173 | } | |
1174 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1175 | break; | |
1176 | } | |
1177 | case LTTNG_VIEWER_INDEX_OK: | |
1178 | { | |
1179 | uint64_t ctf_stream_class_id; | |
1180 | ||
087bc060 | 1181 | BT_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1182 | lttng_index_to_packet_index(&rp, index); |
1183 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1184 | if (stream->ctf_stream_class_id != -1ULL) { | |
1185 | assert(stream->ctf_stream_class_id == | |
1186 | ctf_stream_class_id); | |
1187 | } else { | |
1188 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1189 | } | |
1190 | ||
1191 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
1192 | stream->current_packet_end_timestamp = | |
1193 | index->ts_cycles.timestamp_end; | |
1194 | ||
1195 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1196 | BT_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1197 | trace->new_metadata_needed = true; |
1198 | } | |
1199 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1200 | BT_LOGD("get_next_index: new streams needed"); |
7cdc2bab MD |
1201 | lttng_live_need_new_streams(lttng_live); |
1202 | } | |
1203 | break; | |
1204 | } | |
1205 | case LTTNG_VIEWER_INDEX_RETRY: | |
087bc060 | 1206 | BT_LOGD("get_next_index: retry"); |
7cdc2bab MD |
1207 | memset(index, 0, sizeof(struct packet_index)); |
1208 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
1209 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1210 | goto end; | |
1211 | case LTTNG_VIEWER_INDEX_HUP: | |
087bc060 | 1212 | BT_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1213 | memset(index, 0, sizeof(struct packet_index)); |
1214 | index->offset = EOF; | |
1215 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
1216 | stream->state = LTTNG_LIVE_STREAM_EOF; | |
1217 | break; | |
1218 | case LTTNG_VIEWER_INDEX_ERR: | |
087bc060 | 1219 | BT_LOGE("get_next_index: error"); |
7cdc2bab MD |
1220 | memset(index, 0, sizeof(struct packet_index)); |
1221 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1222 | goto error; | |
1223 | default: | |
087bc060 | 1224 | BT_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1225 | memset(index, 0, sizeof(struct packet_index)); |
1226 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1227 | goto error; | |
1228 | } | |
1229 | end: | |
1230 | return retstatus; | |
1231 | ||
1232 | error: | |
1233 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1234 | return retstatus; | |
1235 | } | |
1236 | ||
1237 | BT_HIDDEN | |
1238 | enum bt_ctf_notif_iter_medium_status lttng_live_get_stream_bytes(struct lttng_live_component *lttng_live, | |
1239 | struct lttng_live_stream_iterator *stream, uint8_t *buf, uint64_t offset, | |
1240 | uint64_t req_len, uint64_t *recv_len) | |
1241 | { | |
1242 | enum bt_ctf_notif_iter_medium_status retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK; | |
1243 | struct lttng_viewer_cmd cmd; | |
1244 | struct lttng_viewer_get_packet rq; | |
1245 | struct lttng_viewer_trace_packet rp; | |
1246 | ssize_t ret_len; | |
1247 | uint32_t flags, status; | |
1248 | struct bt_live_viewer_connection *viewer_connection = | |
1249 | lttng_live->viewer_connection; | |
1250 | struct lttng_live_trace *trace = stream->trace; | |
1251 | ||
087bc060 | 1252 | BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1253 | offset, req_len); |
1254 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1255 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1256 | cmd.cmd_version = htobe32(0); | |
1257 | ||
1258 | memset(&rq, 0, sizeof(rq)); | |
1259 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1260 | rq.offset = htobe64(offset); | |
1261 | rq.len = htobe32(req_len); | |
1262 | ||
1263 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
1264 | if (ret_len < 0) { | |
087bc060 | 1265 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
1266 | goto error; |
1267 | } | |
1268 | assert(ret_len == sizeof(cmd)); | |
1269 | ||
1270 | ret_len = lttng_live_send(viewer_connection->control_sock, &rq, sizeof(rq)); | |
1271 | if (ret_len < 0) { | |
087bc060 | 1272 | BT_LOGE("Error sending get_data request: %s", strerror(errno)); |
7cdc2bab MD |
1273 | goto error; |
1274 | } | |
1275 | assert(ret_len == sizeof(rq)); | |
1276 | ||
1277 | ret_len = lttng_live_recv(viewer_connection->control_sock, &rp, sizeof(rp)); | |
1278 | if (ret_len == 0) { | |
087bc060 | 1279 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1280 | goto error; |
1281 | } | |
1282 | if (ret_len < 0) { | |
087bc060 | 1283 | BT_LOGE("Error receiving get_data response: %s", strerror(errno)); |
7cdc2bab MD |
1284 | goto error; |
1285 | } | |
1286 | if (ret_len != sizeof(rp)) { | |
087bc060 MD |
1287 | BT_LOGE("get_data_packet: expected %zu" |
1288 | ", received %zd", sizeof(rp), | |
7cdc2bab MD |
1289 | ret_len); |
1290 | goto error; | |
1291 | } | |
1292 | ||
1293 | flags = be32toh(rp.flags); | |
1294 | status = be32toh(rp.status); | |
1295 | ||
1296 | switch (status) { | |
1297 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1298 | req_len = be32toh(rp.len); | |
087bc060 | 1299 | BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1300 | break; |
1301 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1302 | /* Unimplemented by relay daemon */ | |
087bc060 | 1303 | BT_LOGD("get_data_packet: retry"); |
7cdc2bab MD |
1304 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
1305 | goto end; | |
1306 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1307 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1308 | BT_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1309 | trace->new_metadata_needed = true; |
1310 | } | |
1311 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1312 | BT_LOGD("get_data_packet: new streams needed, try again later"); |
7cdc2bab MD |
1313 | lttng_live_need_new_streams(lttng_live); |
1314 | } | |
1315 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1316 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
1317 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; | |
1318 | goto end; | |
1319 | } | |
087bc060 | 1320 | BT_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1321 | goto error; |
1322 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
1323 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_EOF; | |
1324 | goto end; | |
1325 | default: | |
087bc060 | 1326 | BT_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1327 | goto error; |
1328 | } | |
1329 | ||
1330 | if (req_len == 0) { | |
1331 | goto error; | |
1332 | } | |
1333 | ||
1334 | ret_len = lttng_live_recv(viewer_connection->control_sock, buf, req_len); | |
1335 | if (ret_len == 0) { | |
087bc060 | 1336 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1337 | goto error; |
1338 | } | |
1339 | if (ret_len < 0) { | |
087bc060 | 1340 | BT_LOGE("Error receiving trace packet: %s", strerror(errno)); |
7cdc2bab MD |
1341 | goto error; |
1342 | } | |
1343 | assert(ret_len == req_len); | |
1344 | *recv_len = ret_len; | |
1345 | end: | |
1346 | return retstatus; | |
1347 | ||
1348 | error: | |
1349 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_ERROR; | |
1350 | return retstatus; | |
1351 | } | |
1352 | ||
1353 | /* | |
1354 | * Request new streams for a session. | |
1355 | */ | |
1356 | BT_HIDDEN | |
1357 | enum bt_ctf_lttng_live_iterator_status lttng_live_get_new_streams( | |
1358 | struct lttng_live_session *session) | |
1359 | { | |
1360 | enum bt_ctf_lttng_live_iterator_status status = | |
1361 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1362 | struct lttng_viewer_cmd cmd; | |
1363 | struct lttng_viewer_new_streams_request rq; | |
1364 | struct lttng_viewer_new_streams_response rp; | |
1365 | ssize_t ret_len; | |
1366 | struct lttng_live_component *lttng_live = session->lttng_live; | |
1367 | struct bt_live_viewer_connection *viewer_connection = | |
1368 | lttng_live->viewer_connection; | |
1369 | uint32_t streams_count; | |
1370 | ||
1371 | if (!session->new_streams_needed) { | |
1372 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1373 | } | |
1374 | ||
1375 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1376 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1377 | cmd.cmd_version = htobe32(0); | |
1378 | ||
1379 | memset(&rq, 0, sizeof(rq)); | |
1380 | rq.session_id = htobe64(session->id); | |
1381 | ||
1382 | ret_len = lttng_live_send(viewer_connection->control_sock, &cmd, sizeof(cmd)); | |
1383 | if (ret_len < 0) { | |
087bc060 | 1384 | BT_LOGE("Error sending cmd: %s", strerror(errno)); |
7cdc2bab MD |
1385 | goto error; |
1386 | } | |
1387 | assert(ret_len == sizeof(cmd)); | |
1388 | ||
1389 | ret_len = lttng_live_send(viewer_connection->control_sock, &rq, sizeof(rq)); | |
1390 | if (ret_len < 0) { | |
087bc060 | 1391 | BT_LOGE("Error sending get_new_streams request: %s", strerror(errno)); |
7cdc2bab MD |
1392 | goto error; |
1393 | } | |
1394 | assert(ret_len == sizeof(rq)); | |
1395 | ||
1396 | ret_len = lttng_live_recv(viewer_connection->control_sock, &rp, sizeof(rp)); | |
1397 | if (ret_len == 0) { | |
087bc060 | 1398 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1399 | goto error; |
1400 | } | |
1401 | if (ret_len < 0) { | |
087bc060 | 1402 | BT_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1403 | goto error; |
1404 | } | |
1405 | assert(ret_len == sizeof(rp)); | |
1406 | ||
1407 | streams_count = be32toh(rp.streams_count); | |
1408 | ||
1409 | switch(be32toh(rp.status)) { | |
1410 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1411 | session->new_streams_needed = false; | |
1412 | break; | |
1413 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1414 | session->new_streams_needed = false; | |
1415 | goto end; | |
1416 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1417 | session->new_streams_needed = false; | |
1418 | session->closed = true; | |
1419 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
1420 | goto end; | |
1421 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
087bc060 | 1422 | BT_LOGE("get_new_streams error"); |
7cdc2bab MD |
1423 | goto error; |
1424 | default: | |
087bc060 | 1425 | BT_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1426 | goto error; |
1427 | } | |
1428 | ||
1429 | if (receive_streams(session, streams_count)) { | |
1430 | goto error; | |
1431 | } | |
1432 | end: | |
1433 | return status; | |
1434 | ||
1435 | error: | |
1436 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1437 | return status; | |
1438 | } | |
1439 | ||
1440 | BT_HIDDEN | |
1441 | struct bt_live_viewer_connection * | |
1442 | bt_live_viewer_connection_create(const char *url, FILE *error_fp) | |
1443 | { | |
1444 | struct bt_live_viewer_connection *viewer_connection; | |
1445 | ||
1446 | viewer_connection = g_new0(struct bt_live_viewer_connection, 1); | |
1447 | ||
1448 | bt_object_init(&viewer_connection->obj, connection_release); | |
1449 | viewer_connection->control_sock = -1; | |
1450 | viewer_connection->port = -1; | |
1451 | viewer_connection->error_fp = error_fp; | |
1452 | viewer_connection->url = g_string_new(url); | |
1453 | if (!viewer_connection->url) { | |
1454 | goto error; | |
1455 | } | |
1456 | ||
087bc060 | 1457 | BT_LOGD("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1458 | if (lttng_live_connect_viewer(viewer_connection)) { |
1459 | goto error_report; | |
1460 | } | |
087bc060 | 1461 | BT_LOGD("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1462 | return viewer_connection; |
1463 | ||
1464 | error_report: | |
087bc060 | 1465 | BT_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab MD |
1466 | error: |
1467 | g_free(viewer_connection); | |
1468 | return NULL; | |
1469 | } | |
1470 | ||
1471 | BT_HIDDEN | |
1472 | void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection *viewer_connection) | |
1473 | { | |
087bc060 | 1474 | BT_LOGD("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab MD |
1475 | lttng_live_disconnect_viewer(viewer_connection); |
1476 | g_string_free(viewer_connection->url, TRUE); | |
1477 | g_free(viewer_connection); | |
1478 | } |