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 | 59 | if (ret > 0) { |
f6ccaed9 | 60 | BT_ASSERT(ret <= to_copy); |
7cdc2bab MD |
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; | |
bdcbd52e JR |
160 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
161 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
162 | int ret; |
163 | ssize_t ret_len; | |
164 | ||
165 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
166 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
167 | cmd.cmd_version = htobe32(0); | |
168 | ||
169 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
170 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
171 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
172 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
173 | ||
bdcbd52e JR |
174 | /* |
175 | * Merge the cmd and connection request to prevent a write-write | |
176 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
177 | * second write to be performed quickly in presence of Nagle's algorithm | |
178 | */ | |
179 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
180 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
bdcbd52e | 181 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
182 | if (ret_len == BT_SOCKET_ERROR) { |
183 | BT_LOGE("Error sending version: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
184 | goto error; |
185 | } | |
f6ccaed9 PP |
186 | |
187 | BT_ASSERT(ret_len == cmd_buf_len); | |
7cdc2bab | 188 | |
4c66436f | 189 | ret_len = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 190 | if (ret_len == 0) { |
087bc060 | 191 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
192 | goto error; |
193 | } | |
1cb3cdd7 MJ |
194 | if (ret_len == BT_SOCKET_ERROR) { |
195 | BT_LOGE("Error receiving version: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
196 | goto error; |
197 | } | |
f6ccaed9 | 198 | BT_ASSERT(ret_len == sizeof(connect)); |
7cdc2bab | 199 | |
087bc060 | 200 | BT_LOGD("Received viewer session ID : %" PRIu64, |
83c78c35 | 201 | (uint64_t) be64toh(connect.viewer_session_id)); |
087bc060 | 202 | BT_LOGD("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
203 | be32toh(connect.minor)); |
204 | ||
205 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
087bc060 | 206 | BT_LOGE("Incompatible lttng-relayd protocol"); |
7cdc2bab MD |
207 | goto error; |
208 | } | |
209 | /* Use the smallest protocol version implemented. */ | |
210 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
211 | viewer_connection->minor = be32toh(connect.minor); | |
212 | } else { | |
213 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
214 | } | |
215 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
216 | ret = 0; | |
217 | return ret; | |
218 | ||
219 | error: | |
087bc060 | 220 | BT_LOGE("Unable to establish connection"); |
7cdc2bab MD |
221 | return -1; |
222 | } | |
223 | ||
224 | static int lttng_live_connect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
225 | { | |
226 | struct hostent *host; | |
227 | struct sockaddr_in server_addr; | |
228 | int ret; | |
229 | ||
230 | if (parse_url(viewer_connection)) { | |
231 | goto error; | |
232 | } | |
233 | ||
94b828f3 | 234 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 235 | if (!host) { |
087bc060 | 236 | BT_LOGE("Cannot lookup hostname %s", |
94b828f3 | 237 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
238 | goto error; |
239 | } | |
240 | ||
1cb3cdd7 MJ |
241 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
242 | BT_LOGE("Socket creation failed: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
243 | goto error; |
244 | } | |
245 | ||
246 | server_addr.sin_family = AF_INET; | |
247 | server_addr.sin_port = htons(viewer_connection->port); | |
248 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
249 | memset(&(server_addr.sin_zero), 0, 8); | |
250 | ||
251 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
1cb3cdd7 MJ |
252 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
253 | BT_LOGE("Connection failed: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
254 | goto error; |
255 | } | |
256 | if (lttng_live_handshake(viewer_connection)) { | |
257 | goto error; | |
258 | } | |
259 | ||
260 | ret = 0; | |
261 | ||
262 | return ret; | |
263 | ||
264 | error: | |
1cb3cdd7 MJ |
265 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
266 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
267 | BT_LOGE("Close: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
268 | } |
269 | } | |
1cb3cdd7 | 270 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
271 | return -1; |
272 | } | |
273 | ||
274 | static void lttng_live_disconnect_viewer(struct bt_live_viewer_connection *viewer_connection) | |
275 | { | |
1cb3cdd7 | 276 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
277 | return; |
278 | } | |
1cb3cdd7 MJ |
279 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
280 | BT_LOGE("Close: %s", bt_socket_errormsg()); | |
281 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
7cdc2bab MD |
282 | } |
283 | } | |
284 | ||
285 | static void connection_release(struct bt_object *obj) | |
286 | { | |
287 | struct bt_live_viewer_connection *conn = | |
288 | container_of(obj, struct bt_live_viewer_connection, obj); | |
289 | ||
290 | bt_live_viewer_connection_destroy(conn); | |
291 | } | |
292 | ||
293 | static | |
294 | enum bt_value_status list_update_session(struct bt_value *results, | |
295 | const struct lttng_viewer_session *session, | |
296 | bool *_found) | |
297 | { | |
298 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
299 | struct bt_value *map = NULL; | |
300 | struct bt_value *hostname = NULL; | |
301 | struct bt_value *session_name = NULL; | |
302 | struct bt_value *btval = NULL; | |
303 | int i, len; | |
304 | bool found = false; | |
305 | ||
306 | len = bt_value_array_size(results); | |
307 | if (len < 0) { | |
308 | ret = BT_VALUE_STATUS_ERROR; | |
309 | goto end; | |
310 | } | |
311 | for (i = 0; i < len; i++) { | |
312 | const char *hostname_str = NULL; | |
313 | const char *session_name_str = NULL; | |
314 | ||
315 | map = bt_value_array_get(results, (size_t) i); | |
316 | if (!map) { | |
317 | ret = BT_VALUE_STATUS_ERROR; | |
318 | goto end; | |
319 | } | |
320 | hostname = bt_value_map_get(map, "target-hostname"); | |
321 | if (!hostname) { | |
322 | ret = BT_VALUE_STATUS_ERROR; | |
323 | goto end; | |
324 | } | |
325 | session_name = bt_value_map_get(map, "session-name"); | |
326 | if (!session_name) { | |
327 | ret = BT_VALUE_STATUS_ERROR; | |
328 | goto end; | |
329 | } | |
330 | ret = bt_value_string_get(hostname, &hostname_str); | |
331 | if (ret != BT_VALUE_STATUS_OK) { | |
332 | goto end; | |
333 | } | |
334 | ret = bt_value_string_get(session_name, &session_name_str); | |
335 | if (ret != BT_VALUE_STATUS_OK) { | |
336 | goto end; | |
337 | } | |
338 | ||
339 | if (!strcmp(session->hostname, hostname_str) | |
340 | && !strcmp(session->session_name, | |
341 | session_name_str)) { | |
342 | int64_t val; | |
343 | uint32_t streams = be32toh(session->streams); | |
344 | uint32_t clients = be32toh(session->clients); | |
345 | ||
346 | found = true; | |
347 | ||
348 | btval = bt_value_map_get(map, "stream-count"); | |
349 | if (!btval) { | |
350 | ret = BT_VALUE_STATUS_ERROR; | |
351 | goto end; | |
352 | } | |
353 | ret = bt_value_integer_get(btval, &val); | |
354 | if (ret != BT_VALUE_STATUS_OK) { | |
355 | goto end; | |
356 | } | |
357 | /* sum */ | |
358 | val += streams; | |
359 | ret = bt_value_integer_set(btval, val); | |
360 | if (ret != BT_VALUE_STATUS_OK) { | |
361 | goto end; | |
362 | } | |
363 | BT_PUT(btval); | |
364 | ||
365 | btval = bt_value_map_get(map, "client-count"); | |
366 | if (!btval) { | |
367 | ret = BT_VALUE_STATUS_ERROR; | |
368 | goto end; | |
369 | } | |
370 | ret = bt_value_integer_get(btval, &val); | |
371 | if (ret != BT_VALUE_STATUS_OK) { | |
372 | goto end; | |
373 | } | |
374 | /* max */ | |
375 | val = max_t(int64_t, clients, val); | |
376 | ret = bt_value_integer_set(btval, val); | |
377 | if (ret != BT_VALUE_STATUS_OK) { | |
378 | goto end; | |
379 | } | |
380 | BT_PUT(btval); | |
381 | } | |
382 | ||
383 | BT_PUT(hostname); | |
384 | BT_PUT(session_name); | |
385 | BT_PUT(map); | |
386 | ||
387 | if (found) { | |
388 | break; | |
389 | } | |
390 | } | |
391 | end: | |
392 | BT_PUT(btval); | |
393 | BT_PUT(hostname); | |
394 | BT_PUT(session_name); | |
395 | BT_PUT(map); | |
396 | *_found = found; | |
397 | return ret; | |
398 | } | |
399 | ||
400 | static | |
401 | enum bt_value_status list_append_session(struct bt_value *results, | |
402 | GString *base_url, | |
403 | const struct lttng_viewer_session *session) | |
404 | { | |
405 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
406 | struct bt_value *map = NULL; | |
407 | GString *url = NULL; | |
408 | bool found = false; | |
409 | ||
410 | /* | |
411 | * If the session already exists, add the stream count to it, | |
412 | * and do max of client counts. | |
413 | */ | |
414 | ret = list_update_session(results, session, &found); | |
415 | if (ret != BT_VALUE_STATUS_OK || found) { | |
416 | goto end; | |
417 | } | |
418 | ||
419 | map = bt_value_map_create(); | |
420 | if (!map) { | |
421 | ret = BT_VALUE_STATUS_ERROR; | |
422 | goto end; | |
423 | } | |
424 | ||
425 | if (base_url->len < 1) { | |
426 | ret = BT_VALUE_STATUS_ERROR; | |
427 | goto end; | |
428 | } | |
429 | /* | |
430 | * key = "url", | |
431 | * value = <string>, | |
432 | */ | |
433 | url = g_string_new(base_url->str); | |
434 | g_string_append(url, "/host/"); | |
435 | g_string_append(url, session->hostname); | |
436 | g_string_append_c(url, '/'); | |
437 | g_string_append(url, session->session_name); | |
438 | ||
439 | ret = bt_value_map_insert_string(map, "url", url->str); | |
440 | if (ret != BT_VALUE_STATUS_OK) { | |
441 | goto end; | |
442 | } | |
443 | ||
444 | /* | |
445 | * key = "target-hostname", | |
446 | * value = <string>, | |
447 | */ | |
448 | ret = bt_value_map_insert_string(map, "target-hostname", | |
449 | session->hostname); | |
450 | if (ret != BT_VALUE_STATUS_OK) { | |
451 | goto end; | |
452 | } | |
453 | ||
454 | /* | |
455 | * key = "session-name", | |
456 | * value = <string>, | |
457 | */ | |
458 | ret = bt_value_map_insert_string(map, "session-name", | |
459 | session->session_name); | |
460 | if (ret != BT_VALUE_STATUS_OK) { | |
461 | goto end; | |
462 | } | |
463 | ||
464 | /* | |
465 | * key = "timer-us", | |
466 | * value = <integer>, | |
467 | */ | |
468 | { | |
469 | uint32_t live_timer = be32toh(session->live_timer); | |
470 | ||
471 | ret = bt_value_map_insert_integer(map, "timer-us", | |
472 | live_timer); | |
473 | if (ret != BT_VALUE_STATUS_OK) { | |
474 | goto end; | |
475 | } | |
476 | } | |
477 | ||
478 | /* | |
479 | * key = "stream-count", | |
480 | * value = <integer>, | |
481 | */ | |
482 | { | |
483 | uint32_t streams = be32toh(session->streams); | |
484 | ||
485 | ret = bt_value_map_insert_integer(map, "stream-count", | |
486 | streams); | |
487 | if (ret != BT_VALUE_STATUS_OK) { | |
488 | goto end; | |
489 | } | |
490 | } | |
491 | ||
492 | ||
493 | /* | |
494 | * key = "client-count", | |
495 | * value = <integer>, | |
496 | */ | |
497 | { | |
498 | uint32_t clients = be32toh(session->clients); | |
499 | ||
500 | ret = bt_value_map_insert_integer(map, "client-count", | |
501 | clients); | |
502 | if (ret != BT_VALUE_STATUS_OK) { | |
503 | goto end; | |
504 | } | |
505 | } | |
506 | ||
507 | ret = bt_value_array_append(results, map); | |
508 | end: | |
509 | if (url) { | |
510 | g_string_free(url, TRUE); | |
511 | } | |
512 | BT_PUT(map); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | /* | |
517 | * Data structure returned: | |
518 | * | |
519 | * { | |
520 | * <array> = { | |
521 | * [n] = { | |
522 | * <map> = { | |
523 | * { | |
524 | * key = "url", | |
525 | * value = <string>, | |
526 | * }, | |
527 | * { | |
528 | * key = "target-hostname", | |
529 | * value = <string>, | |
530 | * }, | |
531 | * { | |
532 | * key = "session-name", | |
533 | * value = <string>, | |
534 | * }, | |
535 | * { | |
536 | * key = "timer-us", | |
537 | * value = <integer>, | |
538 | * }, | |
539 | * { | |
540 | * key = "stream-count", | |
541 | * value = <integer>, | |
542 | * }, | |
543 | * { | |
544 | * key = "client-count", | |
545 | * value = <integer>, | |
546 | * }, | |
547 | * }, | |
548 | * } | |
549 | * } | |
550 | */ | |
551 | ||
552 | BT_HIDDEN | |
553 | struct bt_value *bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection *viewer_connection) | |
554 | { | |
555 | struct bt_value *results = NULL; | |
556 | struct lttng_viewer_cmd cmd; | |
557 | struct lttng_viewer_list_sessions list; | |
558 | uint32_t i, sessions_count; | |
559 | ssize_t ret_len; | |
560 | ||
561 | if (lttng_live_handshake(viewer_connection)) { | |
562 | goto error; | |
563 | } | |
564 | ||
565 | results = bt_value_array_create(); | |
566 | if (!results) { | |
087bc060 | 567 | BT_LOGE("Error creating array"); |
7cdc2bab MD |
568 | goto error; |
569 | } | |
570 | ||
571 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
572 | cmd.data_size = htobe64((uint64_t) 0); | |
573 | cmd.cmd_version = htobe32(0); | |
574 | ||
4c66436f | 575 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
576 | if (ret_len == BT_SOCKET_ERROR) { |
577 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
578 | goto error; |
579 | } | |
f6ccaed9 | 580 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 581 | |
4c66436f | 582 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 583 | if (ret_len == 0) { |
087bc060 | 584 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
585 | goto error; |
586 | } | |
1cb3cdd7 MJ |
587 | if (ret_len == BT_SOCKET_ERROR) { |
588 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
589 | goto error; |
590 | } | |
f6ccaed9 | 591 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
592 | |
593 | sessions_count = be32toh(list.sessions_count); | |
594 | for (i = 0; i < sessions_count; i++) { | |
595 | struct lttng_viewer_session lsession; | |
596 | ||
4c66436f | 597 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
598 | &lsession, sizeof(lsession)); |
599 | if (ret_len == 0) { | |
087bc060 | 600 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
601 | goto error; |
602 | } | |
1cb3cdd7 MJ |
603 | if (ret_len == BT_SOCKET_ERROR) { |
604 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
605 | goto error; |
606 | } | |
f6ccaed9 | 607 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
608 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
609 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
610 | if (list_append_session(results, | |
611 | viewer_connection->url, &lsession) | |
612 | != BT_VALUE_STATUS_OK) { | |
613 | goto error; | |
614 | } | |
615 | } | |
616 | goto end; | |
617 | error: | |
618 | BT_PUT(results); | |
619 | end: | |
620 | return results; | |
621 | } | |
622 | ||
623 | static | |
624 | int lttng_live_query_session_ids(struct lttng_live_component *lttng_live) | |
625 | { | |
626 | struct lttng_viewer_cmd cmd; | |
627 | struct lttng_viewer_list_sessions list; | |
628 | struct lttng_viewer_session lsession; | |
629 | uint32_t i, sessions_count; | |
630 | ssize_t ret_len; | |
631 | uint64_t session_id; | |
632 | struct bt_live_viewer_connection *viewer_connection = | |
633 | lttng_live->viewer_connection; | |
634 | ||
635 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
636 | cmd.data_size = htobe64((uint64_t) 0); | |
637 | cmd.cmd_version = htobe32(0); | |
638 | ||
4c66436f | 639 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
640 | if (ret_len == BT_SOCKET_ERROR) { |
641 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
642 | goto error; |
643 | } | |
f6ccaed9 | 644 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 645 | |
4c66436f | 646 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 647 | if (ret_len == 0) { |
087bc060 | 648 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
649 | goto error; |
650 | } | |
1cb3cdd7 MJ |
651 | if (ret_len == BT_SOCKET_ERROR) { |
652 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
653 | goto error; |
654 | } | |
f6ccaed9 | 655 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
656 | |
657 | sessions_count = be32toh(list.sessions_count); | |
658 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 659 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
660 | &lsession, sizeof(lsession)); |
661 | if (ret_len == 0) { | |
087bc060 | 662 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
663 | goto error; |
664 | } | |
1cb3cdd7 MJ |
665 | if (ret_len == BT_SOCKET_ERROR) { |
666 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
667 | goto error; |
668 | } | |
f6ccaed9 | 669 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
670 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
671 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
672 | session_id = be64toh(lsession.id); | |
673 | ||
06994c71 MD |
674 | BT_LOGD("Adding session %" PRIu64 " hostname: %s session_name: %s", |
675 | session_id, lsession.hostname, lsession.session_name); | |
676 | ||
7cdc2bab | 677 | if ((strncmp(lsession.session_name, |
94b828f3 | 678 | viewer_connection->session_name->str, |
1cb3cdd7 | 679 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 680 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 681 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
06994c71 MD |
682 | if (lttng_live_add_session(lttng_live, session_id, |
683 | lsession.hostname, | |
684 | lsession.session_name)) { | |
7cdc2bab MD |
685 | goto error; |
686 | } | |
687 | } | |
688 | } | |
689 | ||
690 | return 0; | |
691 | ||
692 | error: | |
087bc060 | 693 | BT_LOGE("Unable to query session ids"); |
7cdc2bab MD |
694 | return -1; |
695 | } | |
696 | ||
697 | BT_HIDDEN | |
698 | int lttng_live_create_viewer_session(struct lttng_live_component *lttng_live) | |
699 | { | |
700 | struct lttng_viewer_cmd cmd; | |
701 | struct lttng_viewer_create_session_response resp; | |
702 | ssize_t ret_len; | |
703 | struct bt_live_viewer_connection *viewer_connection = | |
704 | lttng_live->viewer_connection; | |
705 | ||
706 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
707 | cmd.data_size = htobe64((uint64_t) 0); | |
708 | cmd.cmd_version = htobe32(0); | |
709 | ||
4c66436f | 710 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
711 | if (ret_len == BT_SOCKET_ERROR) { |
712 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
713 | goto error; |
714 | } | |
f6ccaed9 | 715 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 716 | |
4c66436f | 717 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 718 | if (ret_len == 0) { |
087bc060 | 719 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
720 | goto error; |
721 | } | |
1cb3cdd7 MJ |
722 | if (ret_len == BT_SOCKET_ERROR) { |
723 | BT_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
724 | goto error; |
725 | } | |
f6ccaed9 | 726 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
727 | |
728 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
087bc060 | 729 | BT_LOGE("Error creating viewer session"); |
7cdc2bab MD |
730 | goto error; |
731 | } | |
732 | if (lttng_live_query_session_ids(lttng_live)) { | |
733 | goto error; | |
734 | } | |
735 | ||
736 | return 0; | |
737 | ||
738 | error: | |
739 | return -1; | |
740 | } | |
741 | ||
742 | static | |
743 | int receive_streams(struct lttng_live_session *session, | |
744 | uint32_t stream_count) | |
745 | { | |
746 | ssize_t ret_len; | |
747 | uint32_t i; | |
748 | struct lttng_live_component *lttng_live = session->lttng_live; | |
749 | struct bt_live_viewer_connection *viewer_connection = | |
750 | lttng_live->viewer_connection; | |
751 | ||
087bc060 | 752 | BT_LOGD("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
753 | for (i = 0; i < stream_count; i++) { |
754 | struct lttng_viewer_stream stream; | |
755 | struct lttng_live_stream_iterator *live_stream; | |
756 | uint64_t stream_id; | |
757 | uint64_t ctf_trace_id; | |
758 | ||
4c66436f | 759 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 760 | if (ret_len == 0) { |
087bc060 | 761 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
762 | goto error; |
763 | } | |
1cb3cdd7 | 764 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 765 | BT_LOGE("Error receiving stream"); |
7cdc2bab MD |
766 | goto error; |
767 | } | |
f6ccaed9 | 768 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
769 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
770 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
771 | stream_id = be64toh(stream.id); | |
772 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
773 | ||
774 | if (stream.metadata_flag) { | |
087bc060 | 775 | BT_LOGD(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
776 | stream_id, stream.path_name, |
777 | stream.channel_name); | |
778 | if (lttng_live_metadata_create_stream(session, | |
06994c71 MD |
779 | ctf_trace_id, stream_id, |
780 | stream.path_name)) { | |
087bc060 | 781 | BT_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
782 | |
783 | goto error; | |
784 | } | |
785 | session->lazy_stream_notif_init = true; | |
786 | } else { | |
087bc060 | 787 | BT_LOGD(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
788 | stream_id, stream.path_name, |
789 | stream.channel_name); | |
790 | live_stream = lttng_live_stream_iterator_create(session, | |
791 | ctf_trace_id, stream_id); | |
792 | if (!live_stream) { | |
087bc060 | 793 | BT_LOGE("Error creating streamn"); |
7cdc2bab MD |
794 | goto error; |
795 | } | |
796 | } | |
797 | } | |
798 | return 0; | |
799 | ||
800 | error: | |
801 | return -1; | |
802 | } | |
803 | ||
804 | BT_HIDDEN | |
805 | int lttng_live_attach_session(struct lttng_live_session *session) | |
806 | { | |
807 | struct lttng_viewer_cmd cmd; | |
808 | struct lttng_viewer_attach_session_request rq; | |
809 | struct lttng_viewer_attach_session_response rp; | |
810 | ssize_t ret_len; | |
811 | struct lttng_live_component *lttng_live = session->lttng_live; | |
812 | struct bt_live_viewer_connection *viewer_connection = | |
813 | lttng_live->viewer_connection; | |
814 | uint64_t session_id = session->id; | |
815 | uint32_t streams_count; | |
bdcbd52e JR |
816 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
817 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
818 | |
819 | if (session->attached) { | |
820 | return 0; | |
821 | } | |
822 | ||
823 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); | |
824 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
825 | cmd.cmd_version = htobe32(0); | |
826 | ||
827 | memset(&rq, 0, sizeof(rq)); | |
828 | rq.session_id = htobe64(session_id); | |
829 | // TODO: add cmd line parameter to select seek beginning | |
830 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
831 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
832 | ||
bdcbd52e JR |
833 | /* |
834 | * Merge the cmd and connection request to prevent a write-write | |
835 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
836 | * second write to be performed quickly in presence of Nagle's algorithm. | |
837 | */ | |
838 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
839 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 840 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
841 | if (ret_len == BT_SOCKET_ERROR) { |
842 | BT_LOGE("Error sending attach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
843 | goto error; |
844 | } | |
7cdc2bab | 845 | |
f6ccaed9 | 846 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 847 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 848 | if (ret_len == 0) { |
087bc060 | 849 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
850 | goto error; |
851 | } | |
1cb3cdd7 MJ |
852 | if (ret_len == BT_SOCKET_ERROR) { |
853 | BT_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
854 | goto error; |
855 | } | |
f6ccaed9 | 856 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
857 | |
858 | streams_count = be32toh(rp.streams_count); | |
859 | switch(be32toh(rp.status)) { | |
860 | case LTTNG_VIEWER_ATTACH_OK: | |
861 | break; | |
862 | case LTTNG_VIEWER_ATTACH_UNK: | |
087bc060 | 863 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
864 | goto error; |
865 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
087bc060 | 866 | BT_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
867 | goto error; |
868 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
087bc060 | 869 | BT_LOGW("Not a live session"); |
7cdc2bab MD |
870 | goto error; |
871 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
087bc060 | 872 | BT_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
873 | goto error; |
874 | default: | |
087bc060 | 875 | BT_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
876 | goto error; |
877 | } | |
878 | ||
879 | /* We receive the initial list of streams. */ | |
880 | if (receive_streams(session, streams_count)) { | |
881 | goto error; | |
882 | } | |
883 | ||
884 | session->attached = true; | |
885 | session->new_streams_needed = false; | |
886 | ||
887 | return 0; | |
888 | ||
889 | error: | |
890 | return -1; | |
891 | } | |
892 | ||
893 | BT_HIDDEN | |
894 | int lttng_live_detach_session(struct lttng_live_session *session) | |
895 | { | |
896 | struct lttng_viewer_cmd cmd; | |
897 | struct lttng_viewer_detach_session_request rq; | |
898 | struct lttng_viewer_detach_session_response rp; | |
899 | ssize_t ret_len; | |
900 | struct lttng_live_component *lttng_live = session->lttng_live; | |
901 | struct bt_live_viewer_connection *viewer_connection = | |
902 | lttng_live->viewer_connection; | |
903 | uint64_t session_id = session->id; | |
bdcbd52e JR |
904 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
905 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
906 | |
907 | if (!session->attached) { | |
908 | return 0; | |
909 | } | |
910 | ||
911 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
912 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
913 | cmd.cmd_version = htobe32(0); | |
914 | ||
915 | memset(&rq, 0, sizeof(rq)); | |
916 | rq.session_id = htobe64(session_id); | |
917 | ||
bdcbd52e JR |
918 | /* |
919 | * Merge the cmd and connection request to prevent a write-write | |
920 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
921 | * second write to be performed quickly in presence of Nagle's algorithm. | |
922 | */ | |
923 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
924 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 925 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
926 | if (ret_len == BT_SOCKET_ERROR) { |
927 | BT_LOGE("Error sending detach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
928 | goto error; |
929 | } | |
7cdc2bab | 930 | |
f6ccaed9 | 931 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 932 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 933 | if (ret_len == 0) { |
087bc060 | 934 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
935 | goto error; |
936 | } | |
1cb3cdd7 MJ |
937 | if (ret_len == BT_SOCKET_ERROR) { |
938 | BT_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
939 | goto error; |
940 | } | |
f6ccaed9 | 941 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
942 | |
943 | switch(be32toh(rp.status)) { | |
944 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
945 | break; | |
946 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
087bc060 | 947 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
948 | goto error; |
949 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
087bc060 | 950 | BT_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
951 | goto error; |
952 | default: | |
087bc060 | 953 | BT_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
954 | goto error; |
955 | } | |
956 | ||
957 | session->attached = false; | |
958 | ||
959 | return 0; | |
960 | ||
961 | error: | |
962 | return -1; | |
963 | } | |
964 | ||
965 | BT_HIDDEN | |
966 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
967 | FILE *fp) | |
968 | { | |
969 | uint64_t len = 0; | |
970 | int ret; | |
971 | struct lttng_viewer_cmd cmd; | |
972 | struct lttng_viewer_get_metadata rq; | |
973 | struct lttng_viewer_metadata_packet rp; | |
974 | char *data = NULL; | |
975 | ssize_t ret_len; | |
976 | struct lttng_live_session *session = trace->session; | |
977 | struct lttng_live_component *lttng_live = session->lttng_live; | |
978 | struct lttng_live_metadata *metadata = trace->metadata; | |
979 | struct bt_live_viewer_connection *viewer_connection = | |
980 | lttng_live->viewer_connection; | |
bdcbd52e JR |
981 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
982 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
983 | |
984 | rq.stream_id = htobe64(metadata->stream_id); | |
985 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
986 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
987 | cmd.cmd_version = htobe32(0); | |
988 | ||
bdcbd52e JR |
989 | /* |
990 | * Merge the cmd and connection request to prevent a write-write | |
991 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
992 | * second write to be performed quickly in presence of Nagle's algorithm. | |
993 | */ | |
994 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
995 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 996 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
997 | if (ret_len == BT_SOCKET_ERROR) { |
998 | BT_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
999 | goto error; |
1000 | } | |
7cdc2bab | 1001 | |
f6ccaed9 | 1002 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1003 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1004 | if (ret_len == 0) { |
087bc060 | 1005 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1006 | goto error; |
1007 | } | |
1cb3cdd7 MJ |
1008 | if (ret_len == BT_SOCKET_ERROR) { |
1009 | BT_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1010 | goto error; |
1011 | } | |
f6ccaed9 | 1012 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1013 | |
1014 | switch (be32toh(rp.status)) { | |
1015 | case LTTNG_VIEWER_METADATA_OK: | |
087bc060 | 1016 | BT_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1017 | break; |
1018 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
087bc060 | 1019 | BT_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1020 | ret = 0; |
1021 | goto end; | |
1022 | case LTTNG_VIEWER_METADATA_ERR: | |
087bc060 | 1023 | BT_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1024 | goto error; |
1025 | default: | |
087bc060 | 1026 | BT_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1027 | goto error; |
1028 | } | |
1029 | ||
1030 | len = be64toh(rp.len); | |
087bc060 | 1031 | BT_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1032 | if (len <= 0) { |
1033 | goto error; | |
1034 | } | |
1035 | ||
1036 | data = zmalloc(len); | |
1037 | if (!data) { | |
087bc060 | 1038 | BT_LOGE("relay data zmalloc: %s", strerror(errno)); |
7cdc2bab MD |
1039 | goto error; |
1040 | } | |
4c66436f | 1041 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1042 | if (ret_len == 0) { |
087bc060 | 1043 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1044 | goto error_free_data; |
1045 | } | |
1cb3cdd7 MJ |
1046 | if (ret_len == BT_SOCKET_ERROR) { |
1047 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1048 | goto error_free_data; |
1049 | } | |
f6ccaed9 | 1050 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1051 | |
1052 | do { | |
1053 | ret_len = fwrite(data, 1, len, fp); | |
1054 | } while (ret_len < 0 && errno == EINTR); | |
1055 | if (ret_len < 0) { | |
087bc060 | 1056 | BT_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1057 | goto error_free_data; |
1058 | } | |
f6ccaed9 | 1059 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1060 | free(data); |
1061 | ret = len; | |
1062 | end: | |
1063 | return ret; | |
1064 | ||
1065 | error_free_data: | |
1066 | free(data); | |
1067 | error: | |
1068 | return -1; | |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1073 | */ | |
1074 | static | |
1075 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1076 | struct packet_index *pindex) | |
1077 | { | |
f6ccaed9 PP |
1078 | BT_ASSERT(lindex); |
1079 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1080 | |
1081 | pindex->offset = be64toh(lindex->offset); | |
1082 | pindex->packet_size = be64toh(lindex->packet_size); | |
1083 | pindex->content_size = be64toh(lindex->content_size); | |
1084 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1085 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1086 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1087 | } | |
1088 | ||
1089 | BT_HIDDEN | |
50842bdc | 1090 | enum bt_lttng_live_iterator_status lttng_live_get_next_index(struct lttng_live_component *lttng_live, |
7cdc2bab MD |
1091 | struct lttng_live_stream_iterator *stream, |
1092 | struct packet_index *index) | |
1093 | { | |
1094 | struct lttng_viewer_cmd cmd; | |
1095 | struct lttng_viewer_get_next_index rq; | |
1096 | ssize_t ret_len; | |
1097 | struct lttng_viewer_index rp; | |
1098 | uint32_t flags, status; | |
50842bdc PP |
1099 | enum bt_lttng_live_iterator_status retstatus = |
1100 | BT_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1101 | struct bt_live_viewer_connection *viewer_connection = |
1102 | lttng_live->viewer_connection; | |
1103 | struct lttng_live_trace *trace = stream->trace; | |
bdcbd52e JR |
1104 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1105 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1106 | |
1107 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1108 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1109 | cmd.cmd_version = htobe32(0); | |
1110 | ||
bdcbd52e | 1111 | |
7cdc2bab MD |
1112 | memset(&rq, 0, sizeof(rq)); |
1113 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1114 | ||
bdcbd52e JR |
1115 | /* |
1116 | * Merge the cmd and connection request to prevent a write-write | |
1117 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1118 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1119 | */ | |
1120 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1121 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1122 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
1123 | if (ret_len == BT_SOCKET_ERROR) { |
1124 | BT_LOGE("Error sending get_next_index request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1125 | goto error; |
1126 | } | |
7cdc2bab | 1127 | |
f6ccaed9 | 1128 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1129 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1130 | if (ret_len == 0) { |
087bc060 | 1131 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1132 | goto error; |
1133 | } | |
1cb3cdd7 MJ |
1134 | if (ret_len == BT_SOCKET_ERROR) { |
1135 | BT_LOGE("Error receiving get_next_index response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1136 | goto error; |
1137 | } | |
f6ccaed9 | 1138 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1139 | |
1140 | flags = be32toh(rp.flags); | |
1141 | status = be32toh(rp.status); | |
1142 | ||
1143 | switch (status) { | |
1144 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1145 | { | |
1146 | uint64_t ctf_stream_class_id; | |
1147 | ||
087bc060 | 1148 | BT_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1149 | memset(index, 0, sizeof(struct packet_index)); |
1150 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
1151 | stream->current_inactivity_timestamp = index->ts_cycles.timestamp_end; | |
1152 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1153 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1154 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1155 | ctf_stream_class_id); |
1156 | } else { | |
1157 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1158 | } | |
1159 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1160 | break; | |
1161 | } | |
1162 | case LTTNG_VIEWER_INDEX_OK: | |
1163 | { | |
1164 | uint64_t ctf_stream_class_id; | |
1165 | ||
087bc060 | 1166 | BT_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1167 | lttng_index_to_packet_index(&rp, index); |
1168 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1169 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1170 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1171 | ctf_stream_class_id); |
1172 | } else { | |
1173 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1174 | } | |
1175 | ||
1176 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
1177 | stream->current_packet_end_timestamp = | |
1178 | index->ts_cycles.timestamp_end; | |
1179 | ||
1180 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1181 | BT_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1182 | trace->new_metadata_needed = true; |
1183 | } | |
1184 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1185 | BT_LOGD("get_next_index: new streams needed"); |
7cdc2bab MD |
1186 | lttng_live_need_new_streams(lttng_live); |
1187 | } | |
1188 | break; | |
1189 | } | |
1190 | case LTTNG_VIEWER_INDEX_RETRY: | |
087bc060 | 1191 | BT_LOGD("get_next_index: retry"); |
7cdc2bab | 1192 | memset(index, 0, sizeof(struct packet_index)); |
50842bdc | 1193 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1194 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1195 | goto end; | |
1196 | case LTTNG_VIEWER_INDEX_HUP: | |
087bc060 | 1197 | BT_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1198 | memset(index, 0, sizeof(struct packet_index)); |
1199 | index->offset = EOF; | |
50842bdc | 1200 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1201 | stream->state = LTTNG_LIVE_STREAM_EOF; |
1202 | break; | |
1203 | case LTTNG_VIEWER_INDEX_ERR: | |
087bc060 | 1204 | BT_LOGE("get_next_index: error"); |
7cdc2bab MD |
1205 | memset(index, 0, sizeof(struct packet_index)); |
1206 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1207 | goto error; | |
1208 | default: | |
087bc060 | 1209 | BT_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1210 | memset(index, 0, sizeof(struct packet_index)); |
1211 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1212 | goto error; | |
1213 | } | |
1214 | end: | |
1215 | return retstatus; | |
1216 | ||
1217 | error: | |
6f79a7cf | 1218 | if (lttng_live_is_canceled(lttng_live)) { |
50842bdc | 1219 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1220 | } else { |
50842bdc | 1221 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1222 | } |
7cdc2bab MD |
1223 | return retstatus; |
1224 | } | |
1225 | ||
1226 | BT_HIDDEN | |
50842bdc | 1227 | enum bt_notif_iter_medium_status lttng_live_get_stream_bytes(struct lttng_live_component *lttng_live, |
7cdc2bab MD |
1228 | struct lttng_live_stream_iterator *stream, uint8_t *buf, uint64_t offset, |
1229 | uint64_t req_len, uint64_t *recv_len) | |
1230 | { | |
50842bdc | 1231 | enum bt_notif_iter_medium_status retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
1232 | struct lttng_viewer_cmd cmd; |
1233 | struct lttng_viewer_get_packet rq; | |
1234 | struct lttng_viewer_trace_packet rp; | |
1235 | ssize_t ret_len; | |
1236 | uint32_t flags, status; | |
1237 | struct bt_live_viewer_connection *viewer_connection = | |
1238 | lttng_live->viewer_connection; | |
1239 | struct lttng_live_trace *trace = stream->trace; | |
bdcbd52e JR |
1240 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1241 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1242 | |
087bc060 | 1243 | BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1244 | offset, req_len); |
1245 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1246 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1247 | cmd.cmd_version = htobe32(0); | |
1248 | ||
1249 | memset(&rq, 0, sizeof(rq)); | |
1250 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1251 | rq.offset = htobe64(offset); | |
1252 | rq.len = htobe32(req_len); | |
1253 | ||
bdcbd52e JR |
1254 | /* |
1255 | * Merge the cmd and connection request to prevent a write-write | |
1256 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1257 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1258 | */ | |
1259 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1260 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1261 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
1262 | if (ret_len == BT_SOCKET_ERROR) { |
1263 | BT_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1264 | goto error; |
1265 | } | |
7cdc2bab | 1266 | |
f6ccaed9 | 1267 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1268 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1269 | if (ret_len == 0) { |
087bc060 | 1270 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1271 | goto error; |
1272 | } | |
1cb3cdd7 MJ |
1273 | if (ret_len == BT_SOCKET_ERROR) { |
1274 | BT_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1275 | goto error; |
1276 | } | |
1277 | if (ret_len != sizeof(rp)) { | |
087bc060 MD |
1278 | BT_LOGE("get_data_packet: expected %zu" |
1279 | ", received %zd", sizeof(rp), | |
7cdc2bab MD |
1280 | ret_len); |
1281 | goto error; | |
1282 | } | |
1283 | ||
1284 | flags = be32toh(rp.flags); | |
1285 | status = be32toh(rp.status); | |
1286 | ||
1287 | switch (status) { | |
1288 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1289 | req_len = be32toh(rp.len); | |
087bc060 | 1290 | BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1291 | break; |
1292 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1293 | /* Unimplemented by relay daemon */ | |
087bc060 | 1294 | BT_LOGD("get_data_packet: retry"); |
50842bdc | 1295 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1296 | goto end; |
1297 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1298 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1299 | BT_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1300 | trace->new_metadata_needed = true; |
1301 | } | |
1302 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1303 | BT_LOGD("get_data_packet: new streams needed, try again later"); |
7cdc2bab MD |
1304 | lttng_live_need_new_streams(lttng_live); |
1305 | } | |
1306 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1307 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
50842bdc | 1308 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1309 | goto end; |
1310 | } | |
087bc060 | 1311 | BT_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1312 | goto error; |
1313 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
50842bdc | 1314 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1315 | goto end; |
1316 | default: | |
087bc060 | 1317 | BT_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1318 | goto error; |
1319 | } | |
1320 | ||
1321 | if (req_len == 0) { | |
1322 | goto error; | |
1323 | } | |
1324 | ||
4c66436f | 1325 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1326 | if (ret_len == 0) { |
087bc060 | 1327 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1328 | goto error; |
1329 | } | |
1cb3cdd7 MJ |
1330 | if (ret_len == BT_SOCKET_ERROR) { |
1331 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1332 | goto error; |
1333 | } | |
f6ccaed9 | 1334 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1335 | *recv_len = ret_len; |
1336 | end: | |
1337 | return retstatus; | |
1338 | ||
1339 | error: | |
6f79a7cf | 1340 | if (lttng_live_is_canceled(lttng_live)) { |
50842bdc | 1341 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1342 | } else { |
50842bdc | 1343 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1344 | } |
7cdc2bab MD |
1345 | return retstatus; |
1346 | } | |
1347 | ||
1348 | /* | |
1349 | * Request new streams for a session. | |
1350 | */ | |
1351 | BT_HIDDEN | |
50842bdc | 1352 | enum bt_lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1353 | struct lttng_live_session *session) |
1354 | { | |
50842bdc PP |
1355 | enum bt_lttng_live_iterator_status status = |
1356 | BT_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1357 | struct lttng_viewer_cmd cmd; |
1358 | struct lttng_viewer_new_streams_request rq; | |
1359 | struct lttng_viewer_new_streams_response rp; | |
1360 | ssize_t ret_len; | |
1361 | struct lttng_live_component *lttng_live = session->lttng_live; | |
1362 | struct bt_live_viewer_connection *viewer_connection = | |
1363 | lttng_live->viewer_connection; | |
1364 | uint32_t streams_count; | |
bdcbd52e JR |
1365 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1366 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1367 | |
1368 | if (!session->new_streams_needed) { | |
50842bdc | 1369 | return BT_LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1370 | } |
1371 | ||
1372 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1373 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1374 | cmd.cmd_version = htobe32(0); | |
1375 | ||
1376 | memset(&rq, 0, sizeof(rq)); | |
1377 | rq.session_id = htobe64(session->id); | |
1378 | ||
bdcbd52e JR |
1379 | /* |
1380 | * Merge the cmd and connection request to prevent a write-write | |
1381 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1382 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1383 | */ | |
1384 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1385 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1386 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
1387 | if (ret_len == BT_SOCKET_ERROR) { |
1388 | BT_LOGE("Error sending get_new_streams request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1389 | goto error; |
1390 | } | |
7cdc2bab | 1391 | |
f6ccaed9 | 1392 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1393 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1394 | if (ret_len == 0) { |
087bc060 | 1395 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1396 | goto error; |
1397 | } | |
1cb3cdd7 | 1398 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 1399 | BT_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1400 | goto error; |
1401 | } | |
f6ccaed9 | 1402 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1403 | |
1404 | streams_count = be32toh(rp.streams_count); | |
1405 | ||
1406 | switch(be32toh(rp.status)) { | |
1407 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1408 | session->new_streams_needed = false; | |
1409 | break; | |
1410 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1411 | session->new_streams_needed = false; | |
1412 | goto end; | |
1413 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1414 | session->new_streams_needed = false; | |
1415 | session->closed = true; | |
50842bdc | 1416 | status = BT_LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1417 | goto end; |
1418 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
087bc060 | 1419 | BT_LOGE("get_new_streams error"); |
7cdc2bab MD |
1420 | goto error; |
1421 | default: | |
087bc060 | 1422 | BT_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1423 | goto error; |
1424 | } | |
1425 | ||
1426 | if (receive_streams(session, streams_count)) { | |
1427 | goto error; | |
1428 | } | |
1429 | end: | |
1430 | return status; | |
1431 | ||
1432 | error: | |
6f79a7cf | 1433 | if (lttng_live_is_canceled(lttng_live)) { |
50842bdc | 1434 | status = BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1435 | } else { |
50842bdc | 1436 | status = BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1437 | } |
7cdc2bab MD |
1438 | return status; |
1439 | } | |
1440 | ||
1441 | BT_HIDDEN | |
1442 | struct bt_live_viewer_connection * | |
4c66436f MD |
1443 | bt_live_viewer_connection_create(const char *url, |
1444 | struct lttng_live_component *lttng_live) | |
7cdc2bab MD |
1445 | { |
1446 | struct bt_live_viewer_connection *viewer_connection; | |
1447 | ||
1448 | viewer_connection = g_new0(struct bt_live_viewer_connection, 1); | |
1449 | ||
1cb3cdd7 MJ |
1450 | if (bt_socket_init() != 0) { |
1451 | goto error; | |
1452 | } | |
1453 | ||
7cdc2bab | 1454 | bt_object_init(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1455 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1456 | viewer_connection->port = -1; |
4c66436f | 1457 | viewer_connection->lttng_live = lttng_live; |
7cdc2bab MD |
1458 | viewer_connection->url = g_string_new(url); |
1459 | if (!viewer_connection->url) { | |
1460 | goto error; | |
1461 | } | |
1462 | ||
087bc060 | 1463 | BT_LOGD("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1464 | if (lttng_live_connect_viewer(viewer_connection)) { |
1465 | goto error_report; | |
1466 | } | |
087bc060 | 1467 | BT_LOGD("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1468 | return viewer_connection; |
1469 | ||
1470 | error_report: | |
087bc060 | 1471 | BT_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab MD |
1472 | error: |
1473 | g_free(viewer_connection); | |
1474 | return NULL; | |
1475 | } | |
1476 | ||
1477 | BT_HIDDEN | |
1478 | void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection *viewer_connection) | |
1479 | { | |
087bc060 | 1480 | BT_LOGD("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab MD |
1481 | lttng_live_disconnect_viewer(viewer_connection); |
1482 | g_string_free(viewer_connection->url, TRUE); | |
94b828f3 MD |
1483 | if (viewer_connection->relay_hostname) { |
1484 | g_string_free(viewer_connection->relay_hostname, TRUE); | |
1485 | } | |
1486 | if (viewer_connection->target_hostname) { | |
1487 | g_string_free(viewer_connection->target_hostname, TRUE); | |
1488 | } | |
1489 | if (viewer_connection->session_name) { | |
1490 | g_string_free(viewer_connection->session_name, TRUE); | |
1491 | } | |
7cdc2bab | 1492 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1493 | |
1494 | bt_socket_fini(); | |
7cdc2bab | 1495 | } |