Commit | Line | Data |
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7cdc2bab MD |
1 | /* |
2 | * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | */ | |
22 | ||
020bc26f PP |
23 | #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-LIVE-SRC-VIEWER" |
24 | #include "logging.h" | |
25 | ||
7cdc2bab MD |
26 | #include <stdio.h> |
27 | #include <stdint.h> | |
28 | #include <stdlib.h> | |
29 | #include <stdbool.h> | |
30 | #include <unistd.h> | |
31 | #include <glib.h> | |
32 | #include <inttypes.h> | |
7cdc2bab | 33 | #include <sys/types.h> |
7cdc2bab | 34 | #include <fcntl.h> |
7cdc2bab | 35 | |
1cb3cdd7 MJ |
36 | #include <babeltrace/compat/socket-internal.h> |
37 | #include <babeltrace/endian-internal.h> | |
7cdc2bab | 38 | #include <babeltrace/compiler-internal.h> |
94b828f3 | 39 | #include <babeltrace/common-internal.h> |
9d408fca | 40 | #include <babeltrace/babeltrace.h> |
7cdc2bab MD |
41 | |
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 | ||
4c66436f MD |
48 | static ssize_t lttng_live_recv(struct bt_live_viewer_connection *viewer_connection, |
49 | void *buf, size_t len) | |
7cdc2bab MD |
50 | { |
51 | ssize_t ret; | |
52 | size_t copied = 0, to_copy = len; | |
4c66436f MD |
53 | struct lttng_live_component *lttng_live = |
54 | viewer_connection->lttng_live; | |
1cb3cdd7 | 55 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
56 | |
57 | do { | |
1cb3cdd7 | 58 | ret = bt_socket_recv(sock, buf + copied, to_copy, 0); |
7cdc2bab MD |
59 | if (ret > 0) { |
60 | assert(ret <= to_copy); | |
61 | copied += ret; | |
62 | to_copy -= ret; | |
63 | } | |
1cb3cdd7 | 64 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { |
6f79a7cf | 65 | if (lttng_live_is_canceled(lttng_live)) { |
4c66436f MD |
66 | break; |
67 | } else { | |
68 | continue; | |
69 | } | |
70 | } | |
71 | } while (ret > 0 && to_copy > 0); | |
7cdc2bab MD |
72 | if (ret > 0) |
73 | ret = copied; | |
1cb3cdd7 | 74 | /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */ |
7cdc2bab MD |
75 | return ret; |
76 | } | |
77 | ||
4c66436f MD |
78 | static ssize_t lttng_live_send(struct bt_live_viewer_connection *viewer_connection, |
79 | const void *buf, size_t len) | |
7cdc2bab | 80 | { |
4c66436f MD |
81 | struct lttng_live_component *lttng_live = |
82 | viewer_connection->lttng_live; | |
1cb3cdd7 | 83 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
84 | ssize_t ret; |
85 | ||
4c66436f | 86 | for (;;) { |
1cb3cdd7 MJ |
87 | ret = bt_socket_send_nosigpipe(sock, buf, len); |
88 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { | |
6f79a7cf | 89 | if (lttng_live_is_canceled(lttng_live)) { |
4c66436f MD |
90 | break; |
91 | } else { | |
92 | continue; | |
93 | } | |
94 | } else { | |
95 | break; | |
96 | } | |
97 | } | |
7cdc2bab MD |
98 | return ret; |
99 | } | |
100 | ||
7cdc2bab MD |
101 | static int parse_url(struct bt_live_viewer_connection *viewer_connection) |
102 | { | |
94b828f3 MD |
103 | char error_buf[256] = { 0 }; |
104 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; | |
105 | int ret = -1; | |
7cdc2bab | 106 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
107 | |
108 | if (!path) { | |
109 | goto end; | |
110 | } | |
7cdc2bab | 111 | |
94b828f3 MD |
112 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, |
113 | error_buf, sizeof(error_buf)); | |
114 | if (!lttng_live_url_parts.proto) { | |
115 | BT_LOGW("Invalid LTTng live URL format: %s", error_buf); | |
7cdc2bab MD |
116 | goto end; |
117 | } | |
7cdc2bab | 118 | |
94b828f3 MD |
119 | viewer_connection->relay_hostname = |
120 | lttng_live_url_parts.hostname; | |
121 | lttng_live_url_parts.hostname = NULL; | |
122 | ||
123 | if (lttng_live_url_parts.port >= 0) { | |
124 | viewer_connection->port = lttng_live_url_parts.port; | |
125 | } else { | |
7cdc2bab MD |
126 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
127 | } | |
128 | ||
94b828f3 MD |
129 | viewer_connection->target_hostname = |
130 | lttng_live_url_parts.target_hostname; | |
131 | lttng_live_url_parts.target_hostname = NULL; | |
132 | ||
133 | if (lttng_live_url_parts.session_name) { | |
134 | viewer_connection->session_name = | |
135 | lttng_live_url_parts.session_name; | |
136 | lttng_live_url_parts.session_name = NULL; | |
7cdc2bab MD |
137 | } |
138 | ||
087bc060 | 139 | BT_LOGD("Connecting to hostname : %s, port : %d, " |
7cdc2bab | 140 | "target hostname : %s, session name : %s, " |
94b828f3 MD |
141 | "proto : %s", |
142 | viewer_connection->relay_hostname->str, | |
7cdc2bab | 143 | viewer_connection->port, |
94b828f3 MD |
144 | viewer_connection->target_hostname == NULL ? |
145 | "<none>" : viewer_connection->target_hostname->str, | |
146 | viewer_connection->session_name == NULL ? | |
147 | "<none>" : viewer_connection->session_name->str, | |
148 | lttng_live_url_parts.proto->str); | |
7cdc2bab MD |
149 | ret = 0; |
150 | ||
151 | end: | |
94b828f3 | 152 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
153 | return ret; |
154 | } | |
155 | ||
156 | static int lttng_live_handshake(struct bt_live_viewer_connection *viewer_connection) | |
157 | { | |
158 | struct lttng_viewer_cmd cmd; | |
159 | struct lttng_viewer_connect connect; | |
160 | int ret; | |
161 | ssize_t ret_len; | |
162 | ||
163 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
164 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
165 | cmd.cmd_version = htobe32(0); | |
166 | ||
167 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
168 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
169 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
170 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
171 | ||
4c66436f | 172 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
173 | if (ret_len == BT_SOCKET_ERROR) { |
174 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
175 | goto error; |
176 | } | |
177 | assert(ret_len == sizeof(cmd)); | |
178 | ||
4c66436f | 179 | ret_len = lttng_live_send(viewer_connection, &connect, sizeof(connect)); |
1cb3cdd7 MJ |
180 | if (ret_len == BT_SOCKET_ERROR) { |
181 | BT_LOGE("Error sending version: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
182 | goto error; |
183 | } | |
184 | assert(ret_len == sizeof(connect)); | |
185 | ||
4c66436f | 186 | ret_len = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 187 | if (ret_len == 0) { |
087bc060 | 188 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
189 | goto error; |
190 | } | |
1cb3cdd7 MJ |
191 | if (ret_len == BT_SOCKET_ERROR) { |
192 | BT_LOGE("Error receiving version: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
193 | goto error; |
194 | } | |
195 | assert(ret_len == sizeof(connect)); | |
196 | ||
087bc060 | 197 | BT_LOGD("Received viewer session ID : %" PRIu64, |
83c78c35 | 198 | (uint64_t) be64toh(connect.viewer_session_id)); |
087bc060 | 199 | BT_LOGD("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
200 | be32toh(connect.minor)); |
201 | ||
202 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
087bc060 | 203 | BT_LOGE("Incompatible lttng-relayd protocol"); |
7cdc2bab MD |
204 | goto error; |
205 | } | |
206 | /* Use the smallest protocol version implemented. */ | |
207 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
208 | viewer_connection->minor = be32toh(connect.minor); | |
209 | } else { | |
210 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
211 | } | |
212 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
213 | ret = 0; | |
214 | return ret; | |
215 | ||
216 | error: | |
087bc060 | 217 | BT_LOGE("Unable to establish connection"); |
7cdc2bab MD |
218 | return -1; |
219 | } | |
220 | ||
221 | static int lttng_live_connect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
222 | { | |
223 | struct hostent *host; | |
224 | struct sockaddr_in server_addr; | |
225 | int ret; | |
226 | ||
227 | if (parse_url(viewer_connection)) { | |
228 | goto error; | |
229 | } | |
230 | ||
94b828f3 | 231 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 232 | if (!host) { |
087bc060 | 233 | BT_LOGE("Cannot lookup hostname %s", |
94b828f3 | 234 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
235 | goto error; |
236 | } | |
237 | ||
1cb3cdd7 MJ |
238 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
239 | BT_LOGE("Socket creation failed: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
240 | goto error; |
241 | } | |
242 | ||
243 | server_addr.sin_family = AF_INET; | |
244 | server_addr.sin_port = htons(viewer_connection->port); | |
245 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
246 | memset(&(server_addr.sin_zero), 0, 8); | |
247 | ||
248 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
1cb3cdd7 MJ |
249 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
250 | BT_LOGE("Connection failed: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
251 | goto error; |
252 | } | |
253 | if (lttng_live_handshake(viewer_connection)) { | |
254 | goto error; | |
255 | } | |
256 | ||
257 | ret = 0; | |
258 | ||
259 | return ret; | |
260 | ||
261 | error: | |
1cb3cdd7 MJ |
262 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
263 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
264 | BT_LOGE("Close: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
265 | } |
266 | } | |
1cb3cdd7 | 267 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
268 | return -1; |
269 | } | |
270 | ||
271 | static void lttng_live_disconnect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
272 | { | |
1cb3cdd7 | 273 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
274 | return; |
275 | } | |
1cb3cdd7 MJ |
276 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
277 | BT_LOGE("Close: %s", bt_socket_errormsg()); | |
278 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
7cdc2bab MD |
279 | } |
280 | } | |
281 | ||
282 | static void connection_release(struct bt_object *obj) | |
283 | { | |
284 | struct bt_live_viewer_connection *conn = | |
285 | container_of(obj, struct bt_live_viewer_connection, obj); | |
286 | ||
287 | bt_live_viewer_connection_destroy(conn); | |
288 | } | |
289 | ||
290 | static | |
291 | enum bt_value_status list_update_session(struct bt_value *results, | |
292 | const struct lttng_viewer_session *session, | |
293 | bool *_found) | |
294 | { | |
295 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
296 | struct bt_value *map = NULL; | |
297 | struct bt_value *hostname = NULL; | |
298 | struct bt_value *session_name = NULL; | |
299 | struct bt_value *btval = NULL; | |
300 | int i, len; | |
301 | bool found = false; | |
302 | ||
303 | len = bt_value_array_size(results); | |
304 | if (len < 0) { | |
305 | ret = BT_VALUE_STATUS_ERROR; | |
306 | goto end; | |
307 | } | |
308 | for (i = 0; i < len; i++) { | |
309 | const char *hostname_str = NULL; | |
310 | const char *session_name_str = NULL; | |
311 | ||
312 | map = bt_value_array_get(results, (size_t) i); | |
313 | if (!map) { | |
314 | ret = BT_VALUE_STATUS_ERROR; | |
315 | goto end; | |
316 | } | |
317 | hostname = bt_value_map_get(map, "target-hostname"); | |
318 | if (!hostname) { | |
319 | ret = BT_VALUE_STATUS_ERROR; | |
320 | goto end; | |
321 | } | |
322 | session_name = bt_value_map_get(map, "session-name"); | |
323 | if (!session_name) { | |
324 | ret = BT_VALUE_STATUS_ERROR; | |
325 | goto end; | |
326 | } | |
327 | ret = bt_value_string_get(hostname, &hostname_str); | |
328 | if (ret != BT_VALUE_STATUS_OK) { | |
329 | goto end; | |
330 | } | |
331 | ret = bt_value_string_get(session_name, &session_name_str); | |
332 | if (ret != BT_VALUE_STATUS_OK) { | |
333 | goto end; | |
334 | } | |
335 | ||
336 | if (!strcmp(session->hostname, hostname_str) | |
337 | && !strcmp(session->session_name, | |
338 | session_name_str)) { | |
339 | int64_t val; | |
340 | uint32_t streams = be32toh(session->streams); | |
341 | uint32_t clients = be32toh(session->clients); | |
342 | ||
343 | found = true; | |
344 | ||
345 | btval = bt_value_map_get(map, "stream-count"); | |
346 | if (!btval) { | |
347 | ret = BT_VALUE_STATUS_ERROR; | |
348 | goto end; | |
349 | } | |
350 | ret = bt_value_integer_get(btval, &val); | |
351 | if (ret != BT_VALUE_STATUS_OK) { | |
352 | goto end; | |
353 | } | |
354 | /* sum */ | |
355 | val += streams; | |
356 | ret = bt_value_integer_set(btval, val); | |
357 | if (ret != BT_VALUE_STATUS_OK) { | |
358 | goto end; | |
359 | } | |
360 | BT_PUT(btval); | |
361 | ||
362 | btval = bt_value_map_get(map, "client-count"); | |
363 | if (!btval) { | |
364 | ret = BT_VALUE_STATUS_ERROR; | |
365 | goto end; | |
366 | } | |
367 | ret = bt_value_integer_get(btval, &val); | |
368 | if (ret != BT_VALUE_STATUS_OK) { | |
369 | goto end; | |
370 | } | |
371 | /* max */ | |
372 | val = max_t(int64_t, clients, val); | |
373 | ret = bt_value_integer_set(btval, val); | |
374 | if (ret != BT_VALUE_STATUS_OK) { | |
375 | goto end; | |
376 | } | |
377 | BT_PUT(btval); | |
378 | } | |
379 | ||
380 | BT_PUT(hostname); | |
381 | BT_PUT(session_name); | |
382 | BT_PUT(map); | |
383 | ||
384 | if (found) { | |
385 | break; | |
386 | } | |
387 | } | |
388 | end: | |
389 | BT_PUT(btval); | |
390 | BT_PUT(hostname); | |
391 | BT_PUT(session_name); | |
392 | BT_PUT(map); | |
393 | *_found = found; | |
394 | return ret; | |
395 | } | |
396 | ||
397 | static | |
398 | enum bt_value_status list_append_session(struct bt_value *results, | |
399 | GString *base_url, | |
400 | const struct lttng_viewer_session *session) | |
401 | { | |
402 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
403 | struct bt_value *map = NULL; | |
404 | GString *url = NULL; | |
405 | bool found = false; | |
406 | ||
407 | /* | |
408 | * If the session already exists, add the stream count to it, | |
409 | * and do max of client counts. | |
410 | */ | |
411 | ret = list_update_session(results, session, &found); | |
412 | if (ret != BT_VALUE_STATUS_OK || found) { | |
413 | goto end; | |
414 | } | |
415 | ||
416 | map = bt_value_map_create(); | |
417 | if (!map) { | |
418 | ret = BT_VALUE_STATUS_ERROR; | |
419 | goto end; | |
420 | } | |
421 | ||
422 | if (base_url->len < 1) { | |
423 | ret = BT_VALUE_STATUS_ERROR; | |
424 | goto end; | |
425 | } | |
426 | /* | |
427 | * key = "url", | |
428 | * value = <string>, | |
429 | */ | |
430 | url = g_string_new(base_url->str); | |
431 | g_string_append(url, "/host/"); | |
432 | g_string_append(url, session->hostname); | |
433 | g_string_append_c(url, '/'); | |
434 | g_string_append(url, session->session_name); | |
435 | ||
436 | ret = bt_value_map_insert_string(map, "url", url->str); | |
437 | if (ret != BT_VALUE_STATUS_OK) { | |
438 | goto end; | |
439 | } | |
440 | ||
441 | /* | |
442 | * key = "target-hostname", | |
443 | * value = <string>, | |
444 | */ | |
445 | ret = bt_value_map_insert_string(map, "target-hostname", | |
446 | session->hostname); | |
447 | if (ret != BT_VALUE_STATUS_OK) { | |
448 | goto end; | |
449 | } | |
450 | ||
451 | /* | |
452 | * key = "session-name", | |
453 | * value = <string>, | |
454 | */ | |
455 | ret = bt_value_map_insert_string(map, "session-name", | |
456 | session->session_name); | |
457 | if (ret != BT_VALUE_STATUS_OK) { | |
458 | goto end; | |
459 | } | |
460 | ||
461 | /* | |
462 | * key = "timer-us", | |
463 | * value = <integer>, | |
464 | */ | |
465 | { | |
466 | uint32_t live_timer = be32toh(session->live_timer); | |
467 | ||
468 | ret = bt_value_map_insert_integer(map, "timer-us", | |
469 | live_timer); | |
470 | if (ret != BT_VALUE_STATUS_OK) { | |
471 | goto end; | |
472 | } | |
473 | } | |
474 | ||
475 | /* | |
476 | * key = "stream-count", | |
477 | * value = <integer>, | |
478 | */ | |
479 | { | |
480 | uint32_t streams = be32toh(session->streams); | |
481 | ||
482 | ret = bt_value_map_insert_integer(map, "stream-count", | |
483 | streams); | |
484 | if (ret != BT_VALUE_STATUS_OK) { | |
485 | goto end; | |
486 | } | |
487 | } | |
488 | ||
489 | ||
490 | /* | |
491 | * key = "client-count", | |
492 | * value = <integer>, | |
493 | */ | |
494 | { | |
495 | uint32_t clients = be32toh(session->clients); | |
496 | ||
497 | ret = bt_value_map_insert_integer(map, "client-count", | |
498 | clients); | |
499 | if (ret != BT_VALUE_STATUS_OK) { | |
500 | goto end; | |
501 | } | |
502 | } | |
503 | ||
504 | ret = bt_value_array_append(results, map); | |
505 | end: | |
506 | if (url) { | |
507 | g_string_free(url, TRUE); | |
508 | } | |
509 | BT_PUT(map); | |
510 | return ret; | |
511 | } | |
512 | ||
513 | /* | |
514 | * Data structure returned: | |
515 | * | |
516 | * { | |
517 | * <array> = { | |
518 | * [n] = { | |
519 | * <map> = { | |
520 | * { | |
521 | * key = "url", | |
522 | * value = <string>, | |
523 | * }, | |
524 | * { | |
525 | * key = "target-hostname", | |
526 | * value = <string>, | |
527 | * }, | |
528 | * { | |
529 | * key = "session-name", | |
530 | * value = <string>, | |
531 | * }, | |
532 | * { | |
533 | * key = "timer-us", | |
534 | * value = <integer>, | |
535 | * }, | |
536 | * { | |
537 | * key = "stream-count", | |
538 | * value = <integer>, | |
539 | * }, | |
540 | * { | |
541 | * key = "client-count", | |
542 | * value = <integer>, | |
543 | * }, | |
544 | * }, | |
545 | * } | |
546 | * } | |
547 | */ | |
548 | ||
549 | BT_HIDDEN | |
550 | struct bt_value *bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection *viewer_connection) | |
551 | { | |
552 | struct bt_value *results = NULL; | |
553 | struct lttng_viewer_cmd cmd; | |
554 | struct lttng_viewer_list_sessions list; | |
555 | uint32_t i, sessions_count; | |
556 | ssize_t ret_len; | |
557 | ||
558 | if (lttng_live_handshake(viewer_connection)) { | |
559 | goto error; | |
560 | } | |
561 | ||
562 | results = bt_value_array_create(); | |
563 | if (!results) { | |
087bc060 | 564 | BT_LOGE("Error creating array"); |
7cdc2bab MD |
565 | goto error; |
566 | } | |
567 | ||
568 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
569 | cmd.data_size = htobe64((uint64_t) 0); | |
570 | cmd.cmd_version = htobe32(0); | |
571 | ||
4c66436f | 572 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
573 | if (ret_len == BT_SOCKET_ERROR) { |
574 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
575 | goto error; |
576 | } | |
577 | assert(ret_len == sizeof(cmd)); | |
578 | ||
4c66436f | 579 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 580 | if (ret_len == 0) { |
087bc060 | 581 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
582 | goto error; |
583 | } | |
1cb3cdd7 MJ |
584 | if (ret_len == BT_SOCKET_ERROR) { |
585 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
586 | goto error; |
587 | } | |
588 | assert(ret_len == sizeof(list)); | |
589 | ||
590 | sessions_count = be32toh(list.sessions_count); | |
591 | for (i = 0; i < sessions_count; i++) { | |
592 | struct lttng_viewer_session lsession; | |
593 | ||
4c66436f | 594 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
595 | &lsession, sizeof(lsession)); |
596 | if (ret_len == 0) { | |
087bc060 | 597 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
598 | goto error; |
599 | } | |
1cb3cdd7 MJ |
600 | if (ret_len == BT_SOCKET_ERROR) { |
601 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
602 | goto error; |
603 | } | |
604 | assert(ret_len == sizeof(lsession)); | |
605 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
606 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
607 | if (list_append_session(results, | |
608 | viewer_connection->url, &lsession) | |
609 | != BT_VALUE_STATUS_OK) { | |
610 | goto error; | |
611 | } | |
612 | } | |
613 | goto end; | |
614 | error: | |
615 | BT_PUT(results); | |
616 | end: | |
617 | return results; | |
618 | } | |
619 | ||
620 | static | |
621 | int lttng_live_query_session_ids(struct lttng_live_component *lttng_live) | |
622 | { | |
623 | struct lttng_viewer_cmd cmd; | |
624 | struct lttng_viewer_list_sessions list; | |
625 | struct lttng_viewer_session lsession; | |
626 | uint32_t i, sessions_count; | |
627 | ssize_t ret_len; | |
628 | uint64_t session_id; | |
629 | struct bt_live_viewer_connection *viewer_connection = | |
630 | lttng_live->viewer_connection; | |
631 | ||
632 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
633 | cmd.data_size = htobe64((uint64_t) 0); | |
634 | cmd.cmd_version = htobe32(0); | |
635 | ||
4c66436f | 636 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
637 | if (ret_len == BT_SOCKET_ERROR) { |
638 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
639 | goto error; |
640 | } | |
641 | assert(ret_len == sizeof(cmd)); | |
642 | ||
4c66436f | 643 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 644 | if (ret_len == 0) { |
087bc060 | 645 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
646 | goto error; |
647 | } | |
1cb3cdd7 MJ |
648 | if (ret_len == BT_SOCKET_ERROR) { |
649 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
650 | goto error; |
651 | } | |
652 | assert(ret_len == sizeof(list)); | |
653 | ||
654 | sessions_count = be32toh(list.sessions_count); | |
655 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 656 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
657 | &lsession, sizeof(lsession)); |
658 | if (ret_len == 0) { | |
087bc060 | 659 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
660 | goto error; |
661 | } | |
1cb3cdd7 MJ |
662 | if (ret_len == BT_SOCKET_ERROR) { |
663 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
664 | goto error; |
665 | } | |
666 | assert(ret_len == sizeof(lsession)); | |
667 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
668 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
669 | session_id = be64toh(lsession.id); | |
670 | ||
06994c71 MD |
671 | BT_LOGD("Adding session %" PRIu64 " hostname: %s session_name: %s", |
672 | session_id, lsession.hostname, lsession.session_name); | |
673 | ||
7cdc2bab | 674 | if ((strncmp(lsession.session_name, |
94b828f3 | 675 | viewer_connection->session_name->str, |
1cb3cdd7 | 676 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 677 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 678 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
06994c71 MD |
679 | if (lttng_live_add_session(lttng_live, session_id, |
680 | lsession.hostname, | |
681 | lsession.session_name)) { | |
7cdc2bab MD |
682 | goto error; |
683 | } | |
684 | } | |
685 | } | |
686 | ||
687 | return 0; | |
688 | ||
689 | error: | |
087bc060 | 690 | BT_LOGE("Unable to query session ids"); |
7cdc2bab MD |
691 | return -1; |
692 | } | |
693 | ||
694 | BT_HIDDEN | |
695 | int lttng_live_create_viewer_session(struct lttng_live_component *lttng_live) | |
696 | { | |
697 | struct lttng_viewer_cmd cmd; | |
698 | struct lttng_viewer_create_session_response resp; | |
699 | ssize_t ret_len; | |
700 | struct bt_live_viewer_connection *viewer_connection = | |
701 | lttng_live->viewer_connection; | |
702 | ||
703 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
704 | cmd.data_size = htobe64((uint64_t) 0); | |
705 | cmd.cmd_version = htobe32(0); | |
706 | ||
4c66436f | 707 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
708 | if (ret_len == BT_SOCKET_ERROR) { |
709 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
710 | goto error; |
711 | } | |
712 | assert(ret_len == sizeof(cmd)); | |
713 | ||
4c66436f | 714 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 715 | if (ret_len == 0) { |
087bc060 | 716 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
717 | goto error; |
718 | } | |
1cb3cdd7 MJ |
719 | if (ret_len == BT_SOCKET_ERROR) { |
720 | BT_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
721 | goto error; |
722 | } | |
723 | assert(ret_len == sizeof(resp)); | |
724 | ||
725 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
087bc060 | 726 | BT_LOGE("Error creating viewer session"); |
7cdc2bab MD |
727 | goto error; |
728 | } | |
729 | if (lttng_live_query_session_ids(lttng_live)) { | |
730 | goto error; | |
731 | } | |
732 | ||
733 | return 0; | |
734 | ||
735 | error: | |
736 | return -1; | |
737 | } | |
738 | ||
739 | static | |
740 | int receive_streams(struct lttng_live_session *session, | |
741 | uint32_t stream_count) | |
742 | { | |
743 | ssize_t ret_len; | |
744 | uint32_t i; | |
745 | struct lttng_live_component *lttng_live = session->lttng_live; | |
746 | struct bt_live_viewer_connection *viewer_connection = | |
747 | lttng_live->viewer_connection; | |
748 | ||
087bc060 | 749 | BT_LOGD("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
750 | for (i = 0; i < stream_count; i++) { |
751 | struct lttng_viewer_stream stream; | |
752 | struct lttng_live_stream_iterator *live_stream; | |
753 | uint64_t stream_id; | |
754 | uint64_t ctf_trace_id; | |
755 | ||
4c66436f | 756 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 757 | if (ret_len == 0) { |
087bc060 | 758 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
759 | goto error; |
760 | } | |
1cb3cdd7 | 761 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 762 | BT_LOGE("Error receiving stream"); |
7cdc2bab MD |
763 | goto error; |
764 | } | |
765 | assert(ret_len == sizeof(stream)); | |
766 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
767 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
768 | stream_id = be64toh(stream.id); | |
769 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
770 | ||
771 | if (stream.metadata_flag) { | |
087bc060 | 772 | BT_LOGD(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
773 | stream_id, stream.path_name, |
774 | stream.channel_name); | |
775 | if (lttng_live_metadata_create_stream(session, | |
06994c71 MD |
776 | ctf_trace_id, stream_id, |
777 | stream.path_name)) { | |
087bc060 | 778 | BT_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
779 | |
780 | goto error; | |
781 | } | |
782 | session->lazy_stream_notif_init = true; | |
783 | } else { | |
087bc060 | 784 | BT_LOGD(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
785 | stream_id, stream.path_name, |
786 | stream.channel_name); | |
787 | live_stream = lttng_live_stream_iterator_create(session, | |
788 | ctf_trace_id, stream_id); | |
789 | if (!live_stream) { | |
087bc060 | 790 | BT_LOGE("Error creating streamn"); |
7cdc2bab MD |
791 | goto error; |
792 | } | |
793 | } | |
794 | } | |
795 | return 0; | |
796 | ||
797 | error: | |
798 | return -1; | |
799 | } | |
800 | ||
801 | BT_HIDDEN | |
802 | int lttng_live_attach_session(struct lttng_live_session *session) | |
803 | { | |
804 | struct lttng_viewer_cmd cmd; | |
805 | struct lttng_viewer_attach_session_request rq; | |
806 | struct lttng_viewer_attach_session_response rp; | |
807 | ssize_t ret_len; | |
808 | struct lttng_live_component *lttng_live = session->lttng_live; | |
809 | struct bt_live_viewer_connection *viewer_connection = | |
810 | lttng_live->viewer_connection; | |
811 | uint64_t session_id = session->id; | |
812 | uint32_t streams_count; | |
813 | ||
814 | if (session->attached) { | |
815 | return 0; | |
816 | } | |
817 | ||
818 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); | |
819 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
820 | cmd.cmd_version = htobe32(0); | |
821 | ||
822 | memset(&rq, 0, sizeof(rq)); | |
823 | rq.session_id = htobe64(session_id); | |
824 | // TODO: add cmd line parameter to select seek beginning | |
825 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
826 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
827 | ||
4c66436f | 828 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
829 | if (ret_len == BT_SOCKET_ERROR) { |
830 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
831 | goto error; |
832 | } | |
833 | assert(ret_len == sizeof(cmd)); | |
834 | ||
4c66436f | 835 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
1cb3cdd7 MJ |
836 | if (ret_len == BT_SOCKET_ERROR) { |
837 | BT_LOGE("Error sending attach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
838 | goto error; |
839 | } | |
840 | assert(ret_len == sizeof(rq)); | |
841 | ||
4c66436f | 842 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 843 | if (ret_len == 0) { |
087bc060 | 844 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
845 | goto error; |
846 | } | |
1cb3cdd7 MJ |
847 | if (ret_len == BT_SOCKET_ERROR) { |
848 | BT_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
849 | goto error; |
850 | } | |
851 | assert(ret_len == sizeof(rp)); | |
852 | ||
853 | streams_count = be32toh(rp.streams_count); | |
854 | switch(be32toh(rp.status)) { | |
855 | case LTTNG_VIEWER_ATTACH_OK: | |
856 | break; | |
857 | case LTTNG_VIEWER_ATTACH_UNK: | |
087bc060 | 858 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
859 | goto error; |
860 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
087bc060 | 861 | BT_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
862 | goto error; |
863 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
087bc060 | 864 | BT_LOGW("Not a live session"); |
7cdc2bab MD |
865 | goto error; |
866 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
087bc060 | 867 | BT_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
868 | goto error; |
869 | default: | |
087bc060 | 870 | BT_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
871 | goto error; |
872 | } | |
873 | ||
874 | /* We receive the initial list of streams. */ | |
875 | if (receive_streams(session, streams_count)) { | |
876 | goto error; | |
877 | } | |
878 | ||
879 | session->attached = true; | |
880 | session->new_streams_needed = false; | |
881 | ||
882 | return 0; | |
883 | ||
884 | error: | |
885 | return -1; | |
886 | } | |
887 | ||
888 | BT_HIDDEN | |
889 | int lttng_live_detach_session(struct lttng_live_session *session) | |
890 | { | |
891 | struct lttng_viewer_cmd cmd; | |
892 | struct lttng_viewer_detach_session_request rq; | |
893 | struct lttng_viewer_detach_session_response rp; | |
894 | ssize_t ret_len; | |
895 | struct lttng_live_component *lttng_live = session->lttng_live; | |
896 | struct bt_live_viewer_connection *viewer_connection = | |
897 | lttng_live->viewer_connection; | |
898 | uint64_t session_id = session->id; | |
899 | ||
900 | if (!session->attached) { | |
901 | return 0; | |
902 | } | |
903 | ||
904 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
905 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
906 | cmd.cmd_version = htobe32(0); | |
907 | ||
908 | memset(&rq, 0, sizeof(rq)); | |
909 | rq.session_id = htobe64(session_id); | |
910 | ||
4c66436f | 911 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
912 | if (ret_len == BT_SOCKET_ERROR) { |
913 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
914 | goto error; |
915 | } | |
916 | assert(ret_len == sizeof(cmd)); | |
917 | ||
4c66436f | 918 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
1cb3cdd7 MJ |
919 | if (ret_len == BT_SOCKET_ERROR) { |
920 | BT_LOGE("Error sending detach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
921 | goto error; |
922 | } | |
923 | assert(ret_len == sizeof(rq)); | |
924 | ||
4c66436f | 925 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 926 | if (ret_len == 0) { |
087bc060 | 927 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
928 | goto error; |
929 | } | |
1cb3cdd7 MJ |
930 | if (ret_len == BT_SOCKET_ERROR) { |
931 | BT_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
932 | goto error; |
933 | } | |
934 | assert(ret_len == sizeof(rp)); | |
935 | ||
936 | switch(be32toh(rp.status)) { | |
937 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
938 | break; | |
939 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
087bc060 | 940 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
941 | goto error; |
942 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
087bc060 | 943 | BT_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
944 | goto error; |
945 | default: | |
087bc060 | 946 | BT_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
947 | goto error; |
948 | } | |
949 | ||
950 | session->attached = false; | |
951 | ||
952 | return 0; | |
953 | ||
954 | error: | |
955 | return -1; | |
956 | } | |
957 | ||
958 | BT_HIDDEN | |
959 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
960 | FILE *fp) | |
961 | { | |
962 | uint64_t len = 0; | |
963 | int ret; | |
964 | struct lttng_viewer_cmd cmd; | |
965 | struct lttng_viewer_get_metadata rq; | |
966 | struct lttng_viewer_metadata_packet rp; | |
967 | char *data = NULL; | |
968 | ssize_t ret_len; | |
969 | struct lttng_live_session *session = trace->session; | |
970 | struct lttng_live_component *lttng_live = session->lttng_live; | |
971 | struct lttng_live_metadata *metadata = trace->metadata; | |
972 | struct bt_live_viewer_connection *viewer_connection = | |
973 | lttng_live->viewer_connection; | |
974 | ||
975 | rq.stream_id = htobe64(metadata->stream_id); | |
976 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
977 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
978 | cmd.cmd_version = htobe32(0); | |
979 | ||
4c66436f | 980 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
981 | if (ret_len == BT_SOCKET_ERROR) { |
982 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
983 | goto error; |
984 | } | |
985 | assert(ret_len == sizeof(cmd)); | |
986 | ||
4c66436f | 987 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
1cb3cdd7 MJ |
988 | if (ret_len == BT_SOCKET_ERROR) { |
989 | BT_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
990 | goto error; |
991 | } | |
992 | assert(ret_len == sizeof(rq)); | |
993 | ||
4c66436f | 994 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 995 | if (ret_len == 0) { |
087bc060 | 996 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
997 | goto error; |
998 | } | |
1cb3cdd7 MJ |
999 | if (ret_len == BT_SOCKET_ERROR) { |
1000 | BT_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1001 | goto error; |
1002 | } | |
1003 | assert(ret_len == sizeof(rp)); | |
1004 | ||
1005 | switch (be32toh(rp.status)) { | |
1006 | case LTTNG_VIEWER_METADATA_OK: | |
087bc060 | 1007 | BT_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1008 | break; |
1009 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
087bc060 | 1010 | BT_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1011 | ret = 0; |
1012 | goto end; | |
1013 | case LTTNG_VIEWER_METADATA_ERR: | |
087bc060 | 1014 | BT_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1015 | goto error; |
1016 | default: | |
087bc060 | 1017 | BT_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1018 | goto error; |
1019 | } | |
1020 | ||
1021 | len = be64toh(rp.len); | |
087bc060 | 1022 | BT_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1023 | if (len <= 0) { |
1024 | goto error; | |
1025 | } | |
1026 | ||
1027 | data = zmalloc(len); | |
1028 | if (!data) { | |
087bc060 | 1029 | BT_LOGE("relay data zmalloc: %s", strerror(errno)); |
7cdc2bab MD |
1030 | goto error; |
1031 | } | |
4c66436f | 1032 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1033 | if (ret_len == 0) { |
087bc060 | 1034 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1035 | goto error_free_data; |
1036 | } | |
1cb3cdd7 MJ |
1037 | if (ret_len == BT_SOCKET_ERROR) { |
1038 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1039 | goto error_free_data; |
1040 | } | |
1041 | assert(ret_len == len); | |
1042 | ||
1043 | do { | |
1044 | ret_len = fwrite(data, 1, len, fp); | |
1045 | } while (ret_len < 0 && errno == EINTR); | |
1046 | if (ret_len < 0) { | |
087bc060 | 1047 | BT_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1048 | goto error_free_data; |
1049 | } | |
1050 | assert(ret_len == len); | |
1051 | free(data); | |
1052 | ret = len; | |
1053 | end: | |
1054 | return ret; | |
1055 | ||
1056 | error_free_data: | |
1057 | free(data); | |
1058 | error: | |
1059 | return -1; | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1064 | */ | |
1065 | static | |
1066 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1067 | struct packet_index *pindex) | |
1068 | { | |
1069 | assert(lindex); | |
1070 | assert(pindex); | |
1071 | ||
1072 | pindex->offset = be64toh(lindex->offset); | |
1073 | pindex->packet_size = be64toh(lindex->packet_size); | |
1074 | pindex->content_size = be64toh(lindex->content_size); | |
1075 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1076 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1077 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1078 | } | |
1079 | ||
1080 | BT_HIDDEN | |
1081 | enum bt_ctf_lttng_live_iterator_status lttng_live_get_next_index(struct lttng_live_component *lttng_live, | |
1082 | struct lttng_live_stream_iterator *stream, | |
1083 | struct packet_index *index) | |
1084 | { | |
1085 | struct lttng_viewer_cmd cmd; | |
1086 | struct lttng_viewer_get_next_index rq; | |
1087 | ssize_t ret_len; | |
1088 | struct lttng_viewer_index rp; | |
1089 | uint32_t flags, status; | |
1090 | enum bt_ctf_lttng_live_iterator_status retstatus = | |
1091 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1092 | struct bt_live_viewer_connection *viewer_connection = | |
1093 | lttng_live->viewer_connection; | |
1094 | struct lttng_live_trace *trace = stream->trace; | |
1095 | ||
1096 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1097 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1098 | cmd.cmd_version = htobe32(0); | |
1099 | ||
1100 | memset(&rq, 0, sizeof(rq)); | |
1101 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1102 | ||
4c66436f | 1103 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
1104 | if (ret_len == BT_SOCKET_ERROR) { |
1105 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1106 | goto error; |
1107 | } | |
1108 | assert(ret_len == sizeof(cmd)); | |
1109 | ||
4c66436f | 1110 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
1cb3cdd7 MJ |
1111 | if (ret_len == BT_SOCKET_ERROR) { |
1112 | BT_LOGE("Error sending get_next_index request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1113 | goto error; |
1114 | } | |
1115 | assert(ret_len == sizeof(rq)); | |
1116 | ||
4c66436f | 1117 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1118 | if (ret_len == 0) { |
087bc060 | 1119 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1120 | goto error; |
1121 | } | |
1cb3cdd7 MJ |
1122 | if (ret_len == BT_SOCKET_ERROR) { |
1123 | BT_LOGE("Error receiving get_next_index response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1124 | goto error; |
1125 | } | |
1126 | assert(ret_len == sizeof(rp)); | |
1127 | ||
1128 | flags = be32toh(rp.flags); | |
1129 | status = be32toh(rp.status); | |
1130 | ||
1131 | switch (status) { | |
1132 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1133 | { | |
1134 | uint64_t ctf_stream_class_id; | |
1135 | ||
087bc060 | 1136 | BT_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1137 | memset(index, 0, sizeof(struct packet_index)); |
1138 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
1139 | stream->current_inactivity_timestamp = index->ts_cycles.timestamp_end; | |
1140 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1141 | if (stream->ctf_stream_class_id != -1ULL) { | |
1142 | assert(stream->ctf_stream_class_id == | |
1143 | ctf_stream_class_id); | |
1144 | } else { | |
1145 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1146 | } | |
1147 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1148 | break; | |
1149 | } | |
1150 | case LTTNG_VIEWER_INDEX_OK: | |
1151 | { | |
1152 | uint64_t ctf_stream_class_id; | |
1153 | ||
087bc060 | 1154 | BT_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1155 | lttng_index_to_packet_index(&rp, index); |
1156 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1157 | if (stream->ctf_stream_class_id != -1ULL) { | |
1158 | assert(stream->ctf_stream_class_id == | |
1159 | ctf_stream_class_id); | |
1160 | } else { | |
1161 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1162 | } | |
1163 | ||
1164 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
1165 | stream->current_packet_end_timestamp = | |
1166 | index->ts_cycles.timestamp_end; | |
1167 | ||
1168 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1169 | BT_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1170 | trace->new_metadata_needed = true; |
1171 | } | |
1172 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1173 | BT_LOGD("get_next_index: new streams needed"); |
7cdc2bab MD |
1174 | lttng_live_need_new_streams(lttng_live); |
1175 | } | |
1176 | break; | |
1177 | } | |
1178 | case LTTNG_VIEWER_INDEX_RETRY: | |
087bc060 | 1179 | BT_LOGD("get_next_index: retry"); |
7cdc2bab MD |
1180 | memset(index, 0, sizeof(struct packet_index)); |
1181 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
1182 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1183 | goto end; | |
1184 | case LTTNG_VIEWER_INDEX_HUP: | |
087bc060 | 1185 | BT_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1186 | memset(index, 0, sizeof(struct packet_index)); |
1187 | index->offset = EOF; | |
1188 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
1189 | stream->state = LTTNG_LIVE_STREAM_EOF; | |
1190 | break; | |
1191 | case LTTNG_VIEWER_INDEX_ERR: | |
087bc060 | 1192 | BT_LOGE("get_next_index: error"); |
7cdc2bab MD |
1193 | memset(index, 0, sizeof(struct packet_index)); |
1194 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1195 | goto error; | |
1196 | default: | |
087bc060 | 1197 | BT_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1198 | memset(index, 0, sizeof(struct packet_index)); |
1199 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1200 | goto error; | |
1201 | } | |
1202 | end: | |
1203 | return retstatus; | |
1204 | ||
1205 | error: | |
6f79a7cf | 1206 | if (lttng_live_is_canceled(lttng_live)) { |
4c66436f MD |
1207 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
1208 | } else { | |
1209 | retstatus = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1210 | } | |
7cdc2bab MD |
1211 | return retstatus; |
1212 | } | |
1213 | ||
1214 | BT_HIDDEN | |
1215 | enum bt_ctf_notif_iter_medium_status lttng_live_get_stream_bytes(struct lttng_live_component *lttng_live, | |
1216 | struct lttng_live_stream_iterator *stream, uint8_t *buf, uint64_t offset, | |
1217 | uint64_t req_len, uint64_t *recv_len) | |
1218 | { | |
1219 | enum bt_ctf_notif_iter_medium_status retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK; | |
1220 | struct lttng_viewer_cmd cmd; | |
1221 | struct lttng_viewer_get_packet rq; | |
1222 | struct lttng_viewer_trace_packet rp; | |
1223 | ssize_t ret_len; | |
1224 | uint32_t flags, status; | |
1225 | struct bt_live_viewer_connection *viewer_connection = | |
1226 | lttng_live->viewer_connection; | |
1227 | struct lttng_live_trace *trace = stream->trace; | |
1228 | ||
087bc060 | 1229 | BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1230 | offset, req_len); |
1231 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1232 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1233 | cmd.cmd_version = htobe32(0); | |
1234 | ||
1235 | memset(&rq, 0, sizeof(rq)); | |
1236 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1237 | rq.offset = htobe64(offset); | |
1238 | rq.len = htobe32(req_len); | |
1239 | ||
4c66436f | 1240 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
1241 | if (ret_len == BT_SOCKET_ERROR) { |
1242 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1243 | goto error; |
1244 | } | |
1245 | assert(ret_len == sizeof(cmd)); | |
1246 | ||
4c66436f | 1247 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
1cb3cdd7 MJ |
1248 | if (ret_len == BT_SOCKET_ERROR) { |
1249 | BT_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1250 | goto error; |
1251 | } | |
1252 | assert(ret_len == sizeof(rq)); | |
1253 | ||
4c66436f | 1254 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1255 | if (ret_len == 0) { |
087bc060 | 1256 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1257 | goto error; |
1258 | } | |
1cb3cdd7 MJ |
1259 | if (ret_len == BT_SOCKET_ERROR) { |
1260 | BT_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1261 | goto error; |
1262 | } | |
1263 | if (ret_len != sizeof(rp)) { | |
087bc060 MD |
1264 | BT_LOGE("get_data_packet: expected %zu" |
1265 | ", received %zd", sizeof(rp), | |
7cdc2bab MD |
1266 | ret_len); |
1267 | goto error; | |
1268 | } | |
1269 | ||
1270 | flags = be32toh(rp.flags); | |
1271 | status = be32toh(rp.status); | |
1272 | ||
1273 | switch (status) { | |
1274 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1275 | req_len = be32toh(rp.len); | |
087bc060 | 1276 | BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1277 | break; |
1278 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1279 | /* Unimplemented by relay daemon */ | |
087bc060 | 1280 | BT_LOGD("get_data_packet: retry"); |
7cdc2bab MD |
1281 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
1282 | goto end; | |
1283 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1284 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1285 | BT_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1286 | trace->new_metadata_needed = true; |
1287 | } | |
1288 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1289 | BT_LOGD("get_data_packet: new streams needed, try again later"); |
7cdc2bab MD |
1290 | lttng_live_need_new_streams(lttng_live); |
1291 | } | |
1292 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1293 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
1294 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; | |
1295 | goto end; | |
1296 | } | |
087bc060 | 1297 | BT_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1298 | goto error; |
1299 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
1300 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_EOF; | |
1301 | goto end; | |
1302 | default: | |
087bc060 | 1303 | BT_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1304 | goto error; |
1305 | } | |
1306 | ||
1307 | if (req_len == 0) { | |
1308 | goto error; | |
1309 | } | |
1310 | ||
4c66436f | 1311 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1312 | if (ret_len == 0) { |
087bc060 | 1313 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1314 | goto error; |
1315 | } | |
1cb3cdd7 MJ |
1316 | if (ret_len == BT_SOCKET_ERROR) { |
1317 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1318 | goto error; |
1319 | } | |
1320 | assert(ret_len == req_len); | |
1321 | *recv_len = ret_len; | |
1322 | end: | |
1323 | return retstatus; | |
1324 | ||
1325 | error: | |
6f79a7cf | 1326 | if (lttng_live_is_canceled(lttng_live)) { |
4c66436f MD |
1327 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
1328 | } else { | |
1329 | retstatus = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_ERROR; | |
1330 | } | |
7cdc2bab MD |
1331 | return retstatus; |
1332 | } | |
1333 | ||
1334 | /* | |
1335 | * Request new streams for a session. | |
1336 | */ | |
1337 | BT_HIDDEN | |
1338 | enum bt_ctf_lttng_live_iterator_status lttng_live_get_new_streams( | |
1339 | struct lttng_live_session *session) | |
1340 | { | |
1341 | enum bt_ctf_lttng_live_iterator_status status = | |
1342 | BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1343 | struct lttng_viewer_cmd cmd; | |
1344 | struct lttng_viewer_new_streams_request rq; | |
1345 | struct lttng_viewer_new_streams_response rp; | |
1346 | ssize_t ret_len; | |
1347 | struct lttng_live_component *lttng_live = session->lttng_live; | |
1348 | struct bt_live_viewer_connection *viewer_connection = | |
1349 | lttng_live->viewer_connection; | |
1350 | uint32_t streams_count; | |
1351 | ||
1352 | if (!session->new_streams_needed) { | |
1353 | return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1354 | } | |
1355 | ||
1356 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1357 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1358 | cmd.cmd_version = htobe32(0); | |
1359 | ||
1360 | memset(&rq, 0, sizeof(rq)); | |
1361 | rq.session_id = htobe64(session->id); | |
1362 | ||
4c66436f | 1363 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
1364 | if (ret_len == BT_SOCKET_ERROR) { |
1365 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1366 | goto error; |
1367 | } | |
1368 | assert(ret_len == sizeof(cmd)); | |
1369 | ||
4c66436f | 1370 | ret_len = lttng_live_send(viewer_connection, &rq, sizeof(rq)); |
1cb3cdd7 MJ |
1371 | if (ret_len == BT_SOCKET_ERROR) { |
1372 | BT_LOGE("Error sending get_new_streams request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1373 | goto error; |
1374 | } | |
1375 | assert(ret_len == sizeof(rq)); | |
1376 | ||
4c66436f | 1377 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1378 | if (ret_len == 0) { |
087bc060 | 1379 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1380 | goto error; |
1381 | } | |
1cb3cdd7 | 1382 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 1383 | BT_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1384 | goto error; |
1385 | } | |
1386 | assert(ret_len == sizeof(rp)); | |
1387 | ||
1388 | streams_count = be32toh(rp.streams_count); | |
1389 | ||
1390 | switch(be32toh(rp.status)) { | |
1391 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1392 | session->new_streams_needed = false; | |
1393 | break; | |
1394 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1395 | session->new_streams_needed = false; | |
1396 | goto end; | |
1397 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1398 | session->new_streams_needed = false; | |
1399 | session->closed = true; | |
1400 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END; | |
1401 | goto end; | |
1402 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
087bc060 | 1403 | BT_LOGE("get_new_streams error"); |
7cdc2bab MD |
1404 | goto error; |
1405 | default: | |
087bc060 | 1406 | BT_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1407 | goto error; |
1408 | } | |
1409 | ||
1410 | if (receive_streams(session, streams_count)) { | |
1411 | goto error; | |
1412 | } | |
1413 | end: | |
1414 | return status; | |
1415 | ||
1416 | error: | |
6f79a7cf | 1417 | if (lttng_live_is_canceled(lttng_live)) { |
3cdf4234 | 1418 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1419 | } else { |
3cdf4234 | 1420 | status = BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1421 | } |
7cdc2bab MD |
1422 | return status; |
1423 | } | |
1424 | ||
1425 | BT_HIDDEN | |
1426 | struct bt_live_viewer_connection * | |
4c66436f MD |
1427 | bt_live_viewer_connection_create(const char *url, |
1428 | struct lttng_live_component *lttng_live) | |
7cdc2bab MD |
1429 | { |
1430 | struct bt_live_viewer_connection *viewer_connection; | |
1431 | ||
1432 | viewer_connection = g_new0(struct bt_live_viewer_connection, 1); | |
1433 | ||
1cb3cdd7 MJ |
1434 | if (bt_socket_init() != 0) { |
1435 | goto error; | |
1436 | } | |
1437 | ||
7cdc2bab | 1438 | bt_object_init(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1439 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1440 | viewer_connection->port = -1; |
4c66436f | 1441 | viewer_connection->lttng_live = lttng_live; |
7cdc2bab MD |
1442 | viewer_connection->url = g_string_new(url); |
1443 | if (!viewer_connection->url) { | |
1444 | goto error; | |
1445 | } | |
1446 | ||
087bc060 | 1447 | BT_LOGD("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1448 | if (lttng_live_connect_viewer(viewer_connection)) { |
1449 | goto error_report; | |
1450 | } | |
087bc060 | 1451 | BT_LOGD("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1452 | return viewer_connection; |
1453 | ||
1454 | error_report: | |
087bc060 | 1455 | BT_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab MD |
1456 | error: |
1457 | g_free(viewer_connection); | |
1458 | return NULL; | |
1459 | } | |
1460 | ||
1461 | BT_HIDDEN | |
1462 | void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection *viewer_connection) | |
1463 | { | |
087bc060 | 1464 | BT_LOGD("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab MD |
1465 | lttng_live_disconnect_viewer(viewer_connection); |
1466 | g_string_free(viewer_connection->url, TRUE); | |
94b828f3 MD |
1467 | if (viewer_connection->relay_hostname) { |
1468 | g_string_free(viewer_connection->relay_hostname, TRUE); | |
1469 | } | |
1470 | if (viewer_connection->target_hostname) { | |
1471 | g_string_free(viewer_connection->target_hostname, TRUE); | |
1472 | } | |
1473 | if (viewer_connection->session_name) { | |
1474 | g_string_free(viewer_connection->session_name, TRUE); | |
1475 | } | |
7cdc2bab | 1476 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1477 | |
1478 | bt_socket_fini(); | |
7cdc2bab | 1479 | } |