Commit | Line | Data |
---|---|---|
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 | ||
b19ff26f | 285 | static void connection_release(bt_object *obj) |
7cdc2bab MD |
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 | |
b19ff26f | 294 | enum bt_value_status list_update_session(bt_value *results, |
7cdc2bab MD |
295 | const struct lttng_viewer_session *session, |
296 | bool *_found) | |
297 | { | |
298 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
b19ff26f PP |
299 | bt_value *map = NULL; |
300 | bt_value *hostname = NULL; | |
301 | bt_value *session_name = NULL; | |
302 | bt_value *btval = NULL; | |
7cdc2bab MD |
303 | int i, len; |
304 | bool found = false; | |
305 | ||
07208d85 | 306 | len = bt_value_array_get_size(results); |
7cdc2bab MD |
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 | } | |
601b0d3c PP |
330 | hostname_str = bt_value_string_get(hostname); |
331 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab MD |
332 | |
333 | if (!strcmp(session->hostname, hostname_str) | |
334 | && !strcmp(session->session_name, | |
335 | session_name_str)) { | |
336 | int64_t val; | |
337 | uint32_t streams = be32toh(session->streams); | |
338 | uint32_t clients = be32toh(session->clients); | |
339 | ||
340 | found = true; | |
341 | ||
342 | btval = bt_value_map_get(map, "stream-count"); | |
343 | if (!btval) { | |
344 | ret = BT_VALUE_STATUS_ERROR; | |
345 | goto end; | |
346 | } | |
601b0d3c | 347 | val = bt_value_integer_get(btval); |
7cdc2bab MD |
348 | /* sum */ |
349 | val += streams; | |
da91b29a | 350 | ret = bt_private_integer_bool_set(btval, val); |
7cdc2bab MD |
351 | if (ret != BT_VALUE_STATUS_OK) { |
352 | goto end; | |
353 | } | |
c5b9b441 | 354 | BT_VALUE_PUT_REF_AND_RESET(btval); |
7cdc2bab MD |
355 | |
356 | btval = bt_value_map_get(map, "client-count"); | |
357 | if (!btval) { | |
358 | ret = BT_VALUE_STATUS_ERROR; | |
359 | goto end; | |
360 | } | |
601b0d3c | 361 | val = bt_value_integer_get(btval); |
7cdc2bab MD |
362 | /* max */ |
363 | val = max_t(int64_t, clients, val); | |
da91b29a | 364 | ret = bt_private_integer_bool_set(btval, val); |
7cdc2bab MD |
365 | if (ret != BT_VALUE_STATUS_OK) { |
366 | goto end; | |
367 | } | |
c5b9b441 | 368 | BT_VALUE_PUT_REF_AND_RESET(btval); |
7cdc2bab MD |
369 | } |
370 | ||
c5b9b441 PP |
371 | BT_VALUE_PUT_REF_AND_RESET(hostname); |
372 | BT_VALUE_PUT_REF_AND_RESET(session_name); | |
373 | BT_VALUE_PUT_REF_AND_RESET(map); | |
7cdc2bab MD |
374 | |
375 | if (found) { | |
376 | break; | |
377 | } | |
378 | } | |
379 | end: | |
c5b9b441 PP |
380 | BT_VALUE_PUT_REF_AND_RESET(btval); |
381 | BT_VALUE_PUT_REF_AND_RESET(hostname); | |
382 | BT_VALUE_PUT_REF_AND_RESET(session_name); | |
383 | BT_VALUE_PUT_REF_AND_RESET(map); | |
7cdc2bab MD |
384 | *_found = found; |
385 | return ret; | |
386 | } | |
387 | ||
388 | static | |
b19ff26f | 389 | enum bt_value_status list_append_session(bt_value *results, |
7cdc2bab MD |
390 | GString *base_url, |
391 | const struct lttng_viewer_session *session) | |
392 | { | |
393 | enum bt_value_status ret = BT_VALUE_STATUS_OK; | |
b19ff26f | 394 | bt_value *map = NULL; |
7cdc2bab MD |
395 | GString *url = NULL; |
396 | bool found = false; | |
397 | ||
398 | /* | |
399 | * If the session already exists, add the stream count to it, | |
400 | * and do max of client counts. | |
401 | */ | |
402 | ret = list_update_session(results, session, &found); | |
403 | if (ret != BT_VALUE_STATUS_OK || found) { | |
404 | goto end; | |
405 | } | |
406 | ||
da91b29a | 407 | map = bt_private_value_map_create(); |
7cdc2bab MD |
408 | if (!map) { |
409 | ret = BT_VALUE_STATUS_ERROR; | |
410 | goto end; | |
411 | } | |
412 | ||
413 | if (base_url->len < 1) { | |
414 | ret = BT_VALUE_STATUS_ERROR; | |
415 | goto end; | |
416 | } | |
417 | /* | |
418 | * key = "url", | |
419 | * value = <string>, | |
420 | */ | |
421 | url = g_string_new(base_url->str); | |
422 | g_string_append(url, "/host/"); | |
423 | g_string_append(url, session->hostname); | |
424 | g_string_append_c(url, '/'); | |
425 | g_string_append(url, session->session_name); | |
426 | ||
da91b29a | 427 | ret = bt_private_value_map_insert_string_entry(map, "url", url->str); |
7cdc2bab MD |
428 | if (ret != BT_VALUE_STATUS_OK) { |
429 | goto end; | |
430 | } | |
431 | ||
432 | /* | |
433 | * key = "target-hostname", | |
434 | * value = <string>, | |
435 | */ | |
da91b29a | 436 | ret = bt_private_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab MD |
437 | session->hostname); |
438 | if (ret != BT_VALUE_STATUS_OK) { | |
439 | goto end; | |
440 | } | |
441 | ||
442 | /* | |
443 | * key = "session-name", | |
444 | * value = <string>, | |
445 | */ | |
da91b29a | 446 | ret = bt_private_value_map_insert_string_entry(map, "session-name", |
7cdc2bab MD |
447 | session->session_name); |
448 | if (ret != BT_VALUE_STATUS_OK) { | |
449 | goto end; | |
450 | } | |
451 | ||
452 | /* | |
453 | * key = "timer-us", | |
454 | * value = <integer>, | |
455 | */ | |
456 | { | |
457 | uint32_t live_timer = be32toh(session->live_timer); | |
458 | ||
da91b29a | 459 | ret = bt_private_value_map_insert_integer_entry(map, "timer-us", |
7cdc2bab MD |
460 | live_timer); |
461 | if (ret != BT_VALUE_STATUS_OK) { | |
462 | goto end; | |
463 | } | |
464 | } | |
465 | ||
466 | /* | |
467 | * key = "stream-count", | |
468 | * value = <integer>, | |
469 | */ | |
470 | { | |
471 | uint32_t streams = be32toh(session->streams); | |
472 | ||
da91b29a | 473 | ret = bt_private_value_map_insert_integer_entry(map, "stream-count", |
7cdc2bab MD |
474 | streams); |
475 | if (ret != BT_VALUE_STATUS_OK) { | |
476 | goto end; | |
477 | } | |
478 | } | |
479 | ||
480 | ||
481 | /* | |
482 | * key = "client-count", | |
483 | * value = <integer>, | |
484 | */ | |
485 | { | |
486 | uint32_t clients = be32toh(session->clients); | |
487 | ||
da91b29a | 488 | ret = bt_private_value_map_insert_integer_entry(map, "client-count", |
7cdc2bab MD |
489 | clients); |
490 | if (ret != BT_VALUE_STATUS_OK) { | |
491 | goto end; | |
492 | } | |
493 | } | |
494 | ||
da91b29a | 495 | ret = bt_private_value_array_append_element(results, map); |
7cdc2bab MD |
496 | end: |
497 | if (url) { | |
498 | g_string_free(url, TRUE); | |
499 | } | |
c5b9b441 | 500 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
501 | return ret; |
502 | } | |
503 | ||
504 | /* | |
505 | * Data structure returned: | |
506 | * | |
507 | * { | |
508 | * <array> = { | |
509 | * [n] = { | |
510 | * <map> = { | |
511 | * { | |
512 | * key = "url", | |
513 | * value = <string>, | |
514 | * }, | |
515 | * { | |
516 | * key = "target-hostname", | |
517 | * value = <string>, | |
518 | * }, | |
519 | * { | |
520 | * key = "session-name", | |
521 | * value = <string>, | |
522 | * }, | |
523 | * { | |
524 | * key = "timer-us", | |
525 | * value = <integer>, | |
526 | * }, | |
527 | * { | |
528 | * key = "stream-count", | |
529 | * value = <integer>, | |
530 | * }, | |
531 | * { | |
532 | * key = "client-count", | |
533 | * value = <integer>, | |
534 | * }, | |
535 | * }, | |
536 | * } | |
537 | * } | |
538 | */ | |
539 | ||
540 | BT_HIDDEN | |
b19ff26f | 541 | bt_value *bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection *viewer_connection) |
7cdc2bab | 542 | { |
b19ff26f | 543 | bt_value *results = NULL; |
7cdc2bab MD |
544 | struct lttng_viewer_cmd cmd; |
545 | struct lttng_viewer_list_sessions list; | |
546 | uint32_t i, sessions_count; | |
547 | ssize_t ret_len; | |
548 | ||
549 | if (lttng_live_handshake(viewer_connection)) { | |
550 | goto error; | |
551 | } | |
552 | ||
da91b29a | 553 | results = bt_private_value_array_create(); |
7cdc2bab | 554 | if (!results) { |
087bc060 | 555 | BT_LOGE("Error creating array"); |
7cdc2bab MD |
556 | goto error; |
557 | } | |
558 | ||
559 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
560 | cmd.data_size = htobe64((uint64_t) 0); | |
561 | cmd.cmd_version = htobe32(0); | |
562 | ||
4c66436f | 563 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
564 | if (ret_len == BT_SOCKET_ERROR) { |
565 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
566 | goto error; |
567 | } | |
f6ccaed9 | 568 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 569 | |
4c66436f | 570 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 571 | if (ret_len == 0) { |
087bc060 | 572 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
573 | goto error; |
574 | } | |
1cb3cdd7 MJ |
575 | if (ret_len == BT_SOCKET_ERROR) { |
576 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
577 | goto error; |
578 | } | |
f6ccaed9 | 579 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
580 | |
581 | sessions_count = be32toh(list.sessions_count); | |
582 | for (i = 0; i < sessions_count; i++) { | |
583 | struct lttng_viewer_session lsession; | |
584 | ||
4c66436f | 585 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
586 | &lsession, sizeof(lsession)); |
587 | if (ret_len == 0) { | |
087bc060 | 588 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
589 | goto error; |
590 | } | |
1cb3cdd7 MJ |
591 | if (ret_len == BT_SOCKET_ERROR) { |
592 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
593 | goto error; |
594 | } | |
f6ccaed9 | 595 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
596 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
597 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
598 | if (list_append_session(results, | |
599 | viewer_connection->url, &lsession) | |
600 | != BT_VALUE_STATUS_OK) { | |
601 | goto error; | |
602 | } | |
603 | } | |
604 | goto end; | |
605 | error: | |
c5b9b441 | 606 | BT_VALUE_PUT_REF_AND_RESET(results); |
7cdc2bab MD |
607 | end: |
608 | return results; | |
609 | } | |
610 | ||
611 | static | |
612 | int lttng_live_query_session_ids(struct lttng_live_component *lttng_live) | |
613 | { | |
614 | struct lttng_viewer_cmd cmd; | |
615 | struct lttng_viewer_list_sessions list; | |
616 | struct lttng_viewer_session lsession; | |
617 | uint32_t i, sessions_count; | |
618 | ssize_t ret_len; | |
619 | uint64_t session_id; | |
620 | struct bt_live_viewer_connection *viewer_connection = | |
621 | lttng_live->viewer_connection; | |
622 | ||
623 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
624 | cmd.data_size = htobe64((uint64_t) 0); | |
625 | cmd.cmd_version = htobe32(0); | |
626 | ||
4c66436f | 627 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
628 | if (ret_len == BT_SOCKET_ERROR) { |
629 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
630 | goto error; |
631 | } | |
f6ccaed9 | 632 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 633 | |
4c66436f | 634 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 635 | if (ret_len == 0) { |
087bc060 | 636 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
637 | goto error; |
638 | } | |
1cb3cdd7 MJ |
639 | if (ret_len == BT_SOCKET_ERROR) { |
640 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
641 | goto error; |
642 | } | |
f6ccaed9 | 643 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
644 | |
645 | sessions_count = be32toh(list.sessions_count); | |
646 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 647 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
648 | &lsession, sizeof(lsession)); |
649 | if (ret_len == 0) { | |
087bc060 | 650 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
651 | goto error; |
652 | } | |
1cb3cdd7 MJ |
653 | if (ret_len == BT_SOCKET_ERROR) { |
654 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
655 | goto error; |
656 | } | |
f6ccaed9 | 657 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
658 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
659 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
660 | session_id = be64toh(lsession.id); | |
661 | ||
06994c71 MD |
662 | BT_LOGD("Adding session %" PRIu64 " hostname: %s session_name: %s", |
663 | session_id, lsession.hostname, lsession.session_name); | |
664 | ||
7cdc2bab | 665 | if ((strncmp(lsession.session_name, |
94b828f3 | 666 | viewer_connection->session_name->str, |
1cb3cdd7 | 667 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 668 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 669 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
06994c71 MD |
670 | if (lttng_live_add_session(lttng_live, session_id, |
671 | lsession.hostname, | |
672 | lsession.session_name)) { | |
7cdc2bab MD |
673 | goto error; |
674 | } | |
675 | } | |
676 | } | |
677 | ||
678 | return 0; | |
679 | ||
680 | error: | |
087bc060 | 681 | BT_LOGE("Unable to query session ids"); |
7cdc2bab MD |
682 | return -1; |
683 | } | |
684 | ||
685 | BT_HIDDEN | |
686 | int lttng_live_create_viewer_session(struct lttng_live_component *lttng_live) | |
687 | { | |
688 | struct lttng_viewer_cmd cmd; | |
689 | struct lttng_viewer_create_session_response resp; | |
690 | ssize_t ret_len; | |
691 | struct bt_live_viewer_connection *viewer_connection = | |
692 | lttng_live->viewer_connection; | |
693 | ||
694 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
695 | cmd.data_size = htobe64((uint64_t) 0); | |
696 | cmd.cmd_version = htobe32(0); | |
697 | ||
4c66436f | 698 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 MJ |
699 | if (ret_len == BT_SOCKET_ERROR) { |
700 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
701 | goto error; |
702 | } | |
f6ccaed9 | 703 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 704 | |
4c66436f | 705 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 706 | if (ret_len == 0) { |
087bc060 | 707 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
708 | goto error; |
709 | } | |
1cb3cdd7 MJ |
710 | if (ret_len == BT_SOCKET_ERROR) { |
711 | BT_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
712 | goto error; |
713 | } | |
f6ccaed9 | 714 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
715 | |
716 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
087bc060 | 717 | BT_LOGE("Error creating viewer session"); |
7cdc2bab MD |
718 | goto error; |
719 | } | |
720 | if (lttng_live_query_session_ids(lttng_live)) { | |
721 | goto error; | |
722 | } | |
723 | ||
724 | return 0; | |
725 | ||
726 | error: | |
727 | return -1; | |
728 | } | |
729 | ||
730 | static | |
731 | int receive_streams(struct lttng_live_session *session, | |
732 | uint32_t stream_count) | |
733 | { | |
734 | ssize_t ret_len; | |
735 | uint32_t i; | |
736 | struct lttng_live_component *lttng_live = session->lttng_live; | |
737 | struct bt_live_viewer_connection *viewer_connection = | |
738 | lttng_live->viewer_connection; | |
739 | ||
087bc060 | 740 | BT_LOGD("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
741 | for (i = 0; i < stream_count; i++) { |
742 | struct lttng_viewer_stream stream; | |
743 | struct lttng_live_stream_iterator *live_stream; | |
744 | uint64_t stream_id; | |
745 | uint64_t ctf_trace_id; | |
746 | ||
4c66436f | 747 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 748 | if (ret_len == 0) { |
087bc060 | 749 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
750 | goto error; |
751 | } | |
1cb3cdd7 | 752 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 753 | BT_LOGE("Error receiving stream"); |
7cdc2bab MD |
754 | goto error; |
755 | } | |
f6ccaed9 | 756 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
757 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
758 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
759 | stream_id = be64toh(stream.id); | |
760 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
761 | ||
762 | if (stream.metadata_flag) { | |
087bc060 | 763 | BT_LOGD(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
764 | stream_id, stream.path_name, |
765 | stream.channel_name); | |
766 | if (lttng_live_metadata_create_stream(session, | |
06994c71 MD |
767 | ctf_trace_id, stream_id, |
768 | stream.path_name)) { | |
087bc060 | 769 | BT_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
770 | |
771 | goto error; | |
772 | } | |
773 | session->lazy_stream_notif_init = true; | |
774 | } else { | |
087bc060 | 775 | BT_LOGD(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
776 | stream_id, stream.path_name, |
777 | stream.channel_name); | |
778 | live_stream = lttng_live_stream_iterator_create(session, | |
779 | ctf_trace_id, stream_id); | |
780 | if (!live_stream) { | |
087bc060 | 781 | BT_LOGE("Error creating streamn"); |
7cdc2bab MD |
782 | goto error; |
783 | } | |
784 | } | |
785 | } | |
786 | return 0; | |
787 | ||
788 | error: | |
789 | return -1; | |
790 | } | |
791 | ||
792 | BT_HIDDEN | |
793 | int lttng_live_attach_session(struct lttng_live_session *session) | |
794 | { | |
795 | struct lttng_viewer_cmd cmd; | |
796 | struct lttng_viewer_attach_session_request rq; | |
797 | struct lttng_viewer_attach_session_response rp; | |
798 | ssize_t ret_len; | |
799 | struct lttng_live_component *lttng_live = session->lttng_live; | |
800 | struct bt_live_viewer_connection *viewer_connection = | |
801 | lttng_live->viewer_connection; | |
802 | uint64_t session_id = session->id; | |
803 | uint32_t streams_count; | |
bdcbd52e JR |
804 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
805 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
806 | |
807 | if (session->attached) { | |
808 | return 0; | |
809 | } | |
810 | ||
811 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); | |
812 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
813 | cmd.cmd_version = htobe32(0); | |
814 | ||
815 | memset(&rq, 0, sizeof(rq)); | |
816 | rq.session_id = htobe64(session_id); | |
817 | // TODO: add cmd line parameter to select seek beginning | |
818 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
819 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
820 | ||
bdcbd52e JR |
821 | /* |
822 | * Merge the cmd and connection request to prevent a write-write | |
823 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
824 | * second write to be performed quickly in presence of Nagle's algorithm. | |
825 | */ | |
826 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
827 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 828 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
829 | if (ret_len == BT_SOCKET_ERROR) { |
830 | BT_LOGE("Error sending attach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
831 | goto error; |
832 | } | |
7cdc2bab | 833 | |
f6ccaed9 | 834 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 835 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 836 | if (ret_len == 0) { |
087bc060 | 837 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
838 | goto error; |
839 | } | |
1cb3cdd7 MJ |
840 | if (ret_len == BT_SOCKET_ERROR) { |
841 | BT_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
842 | goto error; |
843 | } | |
f6ccaed9 | 844 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
845 | |
846 | streams_count = be32toh(rp.streams_count); | |
847 | switch(be32toh(rp.status)) { | |
848 | case LTTNG_VIEWER_ATTACH_OK: | |
849 | break; | |
850 | case LTTNG_VIEWER_ATTACH_UNK: | |
087bc060 | 851 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
852 | goto error; |
853 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
087bc060 | 854 | BT_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
855 | goto error; |
856 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
087bc060 | 857 | BT_LOGW("Not a live session"); |
7cdc2bab MD |
858 | goto error; |
859 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
087bc060 | 860 | BT_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
861 | goto error; |
862 | default: | |
087bc060 | 863 | BT_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
864 | goto error; |
865 | } | |
866 | ||
867 | /* We receive the initial list of streams. */ | |
868 | if (receive_streams(session, streams_count)) { | |
869 | goto error; | |
870 | } | |
871 | ||
872 | session->attached = true; | |
873 | session->new_streams_needed = false; | |
874 | ||
875 | return 0; | |
876 | ||
877 | error: | |
878 | return -1; | |
879 | } | |
880 | ||
881 | BT_HIDDEN | |
882 | int lttng_live_detach_session(struct lttng_live_session *session) | |
883 | { | |
884 | struct lttng_viewer_cmd cmd; | |
885 | struct lttng_viewer_detach_session_request rq; | |
886 | struct lttng_viewer_detach_session_response rp; | |
887 | ssize_t ret_len; | |
888 | struct lttng_live_component *lttng_live = session->lttng_live; | |
889 | struct bt_live_viewer_connection *viewer_connection = | |
890 | lttng_live->viewer_connection; | |
891 | uint64_t session_id = session->id; | |
bdcbd52e JR |
892 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
893 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
894 | |
895 | if (!session->attached) { | |
896 | return 0; | |
897 | } | |
898 | ||
899 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
900 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
901 | cmd.cmd_version = htobe32(0); | |
902 | ||
903 | memset(&rq, 0, sizeof(rq)); | |
904 | rq.session_id = htobe64(session_id); | |
905 | ||
bdcbd52e JR |
906 | /* |
907 | * Merge the cmd and connection request to prevent a write-write | |
908 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
909 | * second write to be performed quickly in presence of Nagle's algorithm. | |
910 | */ | |
911 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
912 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 913 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
914 | if (ret_len == BT_SOCKET_ERROR) { |
915 | BT_LOGE("Error sending detach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
916 | goto error; |
917 | } | |
7cdc2bab | 918 | |
f6ccaed9 | 919 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 920 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 921 | if (ret_len == 0) { |
087bc060 | 922 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
923 | goto error; |
924 | } | |
1cb3cdd7 MJ |
925 | if (ret_len == BT_SOCKET_ERROR) { |
926 | BT_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
927 | goto error; |
928 | } | |
f6ccaed9 | 929 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
930 | |
931 | switch(be32toh(rp.status)) { | |
932 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
933 | break; | |
934 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
087bc060 | 935 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
936 | goto error; |
937 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
087bc060 | 938 | BT_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
939 | goto error; |
940 | default: | |
087bc060 | 941 | BT_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
942 | goto error; |
943 | } | |
944 | ||
945 | session->attached = false; | |
946 | ||
947 | return 0; | |
948 | ||
949 | error: | |
950 | return -1; | |
951 | } | |
952 | ||
953 | BT_HIDDEN | |
954 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
955 | FILE *fp) | |
956 | { | |
957 | uint64_t len = 0; | |
958 | int ret; | |
959 | struct lttng_viewer_cmd cmd; | |
960 | struct lttng_viewer_get_metadata rq; | |
961 | struct lttng_viewer_metadata_packet rp; | |
962 | char *data = NULL; | |
963 | ssize_t ret_len; | |
964 | struct lttng_live_session *session = trace->session; | |
965 | struct lttng_live_component *lttng_live = session->lttng_live; | |
966 | struct lttng_live_metadata *metadata = trace->metadata; | |
967 | struct bt_live_viewer_connection *viewer_connection = | |
968 | lttng_live->viewer_connection; | |
bdcbd52e JR |
969 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
970 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
971 | |
972 | rq.stream_id = htobe64(metadata->stream_id); | |
973 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
974 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
975 | cmd.cmd_version = htobe32(0); | |
976 | ||
bdcbd52e JR |
977 | /* |
978 | * Merge the cmd and connection request to prevent a write-write | |
979 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
980 | * second write to be performed quickly in presence of Nagle's algorithm. | |
981 | */ | |
982 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
983 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 984 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
985 | if (ret_len == BT_SOCKET_ERROR) { |
986 | BT_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
987 | goto error; |
988 | } | |
7cdc2bab | 989 | |
f6ccaed9 | 990 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 991 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 992 | if (ret_len == 0) { |
087bc060 | 993 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
994 | goto error; |
995 | } | |
1cb3cdd7 MJ |
996 | if (ret_len == BT_SOCKET_ERROR) { |
997 | BT_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
998 | goto error; |
999 | } | |
f6ccaed9 | 1000 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1001 | |
1002 | switch (be32toh(rp.status)) { | |
1003 | case LTTNG_VIEWER_METADATA_OK: | |
087bc060 | 1004 | BT_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1005 | break; |
1006 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
087bc060 | 1007 | BT_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1008 | ret = 0; |
1009 | goto end; | |
1010 | case LTTNG_VIEWER_METADATA_ERR: | |
087bc060 | 1011 | BT_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1012 | goto error; |
1013 | default: | |
087bc060 | 1014 | BT_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1015 | goto error; |
1016 | } | |
1017 | ||
1018 | len = be64toh(rp.len); | |
087bc060 | 1019 | BT_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1020 | if (len <= 0) { |
1021 | goto error; | |
1022 | } | |
1023 | ||
1024 | data = zmalloc(len); | |
1025 | if (!data) { | |
087bc060 | 1026 | BT_LOGE("relay data zmalloc: %s", strerror(errno)); |
7cdc2bab MD |
1027 | goto error; |
1028 | } | |
4c66436f | 1029 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1030 | if (ret_len == 0) { |
087bc060 | 1031 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1032 | goto error_free_data; |
1033 | } | |
1cb3cdd7 MJ |
1034 | if (ret_len == BT_SOCKET_ERROR) { |
1035 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1036 | goto error_free_data; |
1037 | } | |
f6ccaed9 | 1038 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1039 | |
1040 | do { | |
1041 | ret_len = fwrite(data, 1, len, fp); | |
1042 | } while (ret_len < 0 && errno == EINTR); | |
1043 | if (ret_len < 0) { | |
087bc060 | 1044 | BT_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1045 | goto error_free_data; |
1046 | } | |
f6ccaed9 | 1047 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1048 | free(data); |
1049 | ret = len; | |
1050 | end: | |
1051 | return ret; | |
1052 | ||
1053 | error_free_data: | |
1054 | free(data); | |
1055 | error: | |
1056 | return -1; | |
1057 | } | |
1058 | ||
1059 | /* | |
1060 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1061 | */ | |
1062 | static | |
1063 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1064 | struct packet_index *pindex) | |
1065 | { | |
f6ccaed9 PP |
1066 | BT_ASSERT(lindex); |
1067 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1068 | |
1069 | pindex->offset = be64toh(lindex->offset); | |
1070 | pindex->packet_size = be64toh(lindex->packet_size); | |
1071 | pindex->content_size = be64toh(lindex->content_size); | |
1072 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1073 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1074 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1075 | } | |
1076 | ||
1077 | BT_HIDDEN | |
50842bdc | 1078 | enum bt_lttng_live_iterator_status lttng_live_get_next_index(struct lttng_live_component *lttng_live, |
7cdc2bab MD |
1079 | struct lttng_live_stream_iterator *stream, |
1080 | struct packet_index *index) | |
1081 | { | |
1082 | struct lttng_viewer_cmd cmd; | |
1083 | struct lttng_viewer_get_next_index rq; | |
1084 | ssize_t ret_len; | |
1085 | struct lttng_viewer_index rp; | |
1086 | uint32_t flags, status; | |
50842bdc PP |
1087 | enum bt_lttng_live_iterator_status retstatus = |
1088 | BT_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1089 | struct bt_live_viewer_connection *viewer_connection = |
1090 | lttng_live->viewer_connection; | |
1091 | struct lttng_live_trace *trace = stream->trace; | |
bdcbd52e JR |
1092 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1093 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1094 | |
1095 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1096 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1097 | cmd.cmd_version = htobe32(0); | |
1098 | ||
bdcbd52e | 1099 | |
7cdc2bab MD |
1100 | memset(&rq, 0, sizeof(rq)); |
1101 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1102 | ||
bdcbd52e JR |
1103 | /* |
1104 | * Merge the cmd and connection request to prevent a write-write | |
1105 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1106 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1107 | */ | |
1108 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1109 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1110 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
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 | } | |
7cdc2bab | 1115 | |
f6ccaed9 | 1116 | BT_ASSERT(ret_len == cmd_buf_len); |
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 | } | |
f6ccaed9 | 1126 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
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) { | |
f6ccaed9 | 1142 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
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) { | |
f6ccaed9 | 1158 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
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 | 1180 | memset(index, 0, sizeof(struct packet_index)); |
50842bdc | 1181 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
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; | |
50842bdc | 1188 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
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)) { |
50842bdc | 1207 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1208 | } else { |
50842bdc | 1209 | retstatus = BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1210 | } |
7cdc2bab MD |
1211 | return retstatus; |
1212 | } | |
1213 | ||
1214 | BT_HIDDEN | |
50842bdc | 1215 | enum bt_notif_iter_medium_status lttng_live_get_stream_bytes(struct lttng_live_component *lttng_live, |
7cdc2bab MD |
1216 | struct lttng_live_stream_iterator *stream, uint8_t *buf, uint64_t offset, |
1217 | uint64_t req_len, uint64_t *recv_len) | |
1218 | { | |
50842bdc | 1219 | enum bt_notif_iter_medium_status retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
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; | |
bdcbd52e JR |
1228 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1229 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1230 | |
087bc060 | 1231 | BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1232 | offset, req_len); |
1233 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1234 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1235 | cmd.cmd_version = htobe32(0); | |
1236 | ||
1237 | memset(&rq, 0, sizeof(rq)); | |
1238 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1239 | rq.offset = htobe64(offset); | |
1240 | rq.len = htobe32(req_len); | |
1241 | ||
bdcbd52e JR |
1242 | /* |
1243 | * Merge the cmd and connection request to prevent a write-write | |
1244 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1245 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1246 | */ | |
1247 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1248 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1249 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
1250 | if (ret_len == BT_SOCKET_ERROR) { |
1251 | BT_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1252 | goto error; |
1253 | } | |
7cdc2bab | 1254 | |
f6ccaed9 | 1255 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1256 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1257 | if (ret_len == 0) { |
087bc060 | 1258 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1259 | goto error; |
1260 | } | |
1cb3cdd7 MJ |
1261 | if (ret_len == BT_SOCKET_ERROR) { |
1262 | BT_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1263 | goto error; |
1264 | } | |
1265 | if (ret_len != sizeof(rp)) { | |
087bc060 MD |
1266 | BT_LOGE("get_data_packet: expected %zu" |
1267 | ", received %zd", sizeof(rp), | |
7cdc2bab MD |
1268 | ret_len); |
1269 | goto error; | |
1270 | } | |
1271 | ||
1272 | flags = be32toh(rp.flags); | |
1273 | status = be32toh(rp.status); | |
1274 | ||
1275 | switch (status) { | |
1276 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1277 | req_len = be32toh(rp.len); | |
087bc060 | 1278 | BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1279 | break; |
1280 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1281 | /* Unimplemented by relay daemon */ | |
087bc060 | 1282 | BT_LOGD("get_data_packet: retry"); |
50842bdc | 1283 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1284 | goto end; |
1285 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1286 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1287 | BT_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1288 | trace->new_metadata_needed = true; |
1289 | } | |
1290 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1291 | BT_LOGD("get_data_packet: new streams needed, try again later"); |
7cdc2bab MD |
1292 | lttng_live_need_new_streams(lttng_live); |
1293 | } | |
1294 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1295 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
50842bdc | 1296 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1297 | goto end; |
1298 | } | |
087bc060 | 1299 | BT_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1300 | goto error; |
1301 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
50842bdc | 1302 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1303 | goto end; |
1304 | default: | |
087bc060 | 1305 | BT_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1306 | goto error; |
1307 | } | |
1308 | ||
1309 | if (req_len == 0) { | |
1310 | goto error; | |
1311 | } | |
1312 | ||
4c66436f | 1313 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1314 | if (ret_len == 0) { |
087bc060 | 1315 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1316 | goto error; |
1317 | } | |
1cb3cdd7 MJ |
1318 | if (ret_len == BT_SOCKET_ERROR) { |
1319 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1320 | goto error; |
1321 | } | |
f6ccaed9 | 1322 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1323 | *recv_len = ret_len; |
1324 | end: | |
1325 | return retstatus; | |
1326 | ||
1327 | error: | |
6f79a7cf | 1328 | if (lttng_live_is_canceled(lttng_live)) { |
50842bdc | 1329 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1330 | } else { |
50842bdc | 1331 | retstatus = BT_NOTIF_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1332 | } |
7cdc2bab MD |
1333 | return retstatus; |
1334 | } | |
1335 | ||
1336 | /* | |
1337 | * Request new streams for a session. | |
1338 | */ | |
1339 | BT_HIDDEN | |
50842bdc | 1340 | enum bt_lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1341 | struct lttng_live_session *session) |
1342 | { | |
50842bdc PP |
1343 | enum bt_lttng_live_iterator_status status = |
1344 | BT_LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1345 | struct lttng_viewer_cmd cmd; |
1346 | struct lttng_viewer_new_streams_request rq; | |
1347 | struct lttng_viewer_new_streams_response rp; | |
1348 | ssize_t ret_len; | |
1349 | struct lttng_live_component *lttng_live = session->lttng_live; | |
1350 | struct bt_live_viewer_connection *viewer_connection = | |
1351 | lttng_live->viewer_connection; | |
1352 | uint32_t streams_count; | |
bdcbd52e JR |
1353 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1354 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1355 | |
1356 | if (!session->new_streams_needed) { | |
50842bdc | 1357 | return BT_LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1358 | } |
1359 | ||
1360 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1361 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1362 | cmd.cmd_version = htobe32(0); | |
1363 | ||
1364 | memset(&rq, 0, sizeof(rq)); | |
1365 | rq.session_id = htobe64(session->id); | |
1366 | ||
bdcbd52e JR |
1367 | /* |
1368 | * Merge the cmd and connection request to prevent a write-write | |
1369 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1370 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1371 | */ | |
1372 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1373 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1374 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 MJ |
1375 | if (ret_len == BT_SOCKET_ERROR) { |
1376 | BT_LOGE("Error sending get_new_streams request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1377 | goto error; |
1378 | } | |
7cdc2bab | 1379 | |
f6ccaed9 | 1380 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1381 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1382 | if (ret_len == 0) { |
087bc060 | 1383 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1384 | goto error; |
1385 | } | |
1cb3cdd7 | 1386 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 1387 | BT_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1388 | goto error; |
1389 | } | |
f6ccaed9 | 1390 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1391 | |
1392 | streams_count = be32toh(rp.streams_count); | |
1393 | ||
1394 | switch(be32toh(rp.status)) { | |
1395 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1396 | session->new_streams_needed = false; | |
1397 | break; | |
1398 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1399 | session->new_streams_needed = false; | |
1400 | goto end; | |
1401 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1402 | session->new_streams_needed = false; | |
1403 | session->closed = true; | |
50842bdc | 1404 | status = BT_LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1405 | goto end; |
1406 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
087bc060 | 1407 | BT_LOGE("get_new_streams error"); |
7cdc2bab MD |
1408 | goto error; |
1409 | default: | |
087bc060 | 1410 | BT_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1411 | goto error; |
1412 | } | |
1413 | ||
1414 | if (receive_streams(session, streams_count)) { | |
1415 | goto error; | |
1416 | } | |
1417 | end: | |
1418 | return status; | |
1419 | ||
1420 | error: | |
6f79a7cf | 1421 | if (lttng_live_is_canceled(lttng_live)) { |
50842bdc | 1422 | status = BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1423 | } else { |
50842bdc | 1424 | status = BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1425 | } |
7cdc2bab MD |
1426 | return status; |
1427 | } | |
1428 | ||
1429 | BT_HIDDEN | |
1430 | struct bt_live_viewer_connection * | |
4c66436f MD |
1431 | bt_live_viewer_connection_create(const char *url, |
1432 | struct lttng_live_component *lttng_live) | |
7cdc2bab MD |
1433 | { |
1434 | struct bt_live_viewer_connection *viewer_connection; | |
1435 | ||
1436 | viewer_connection = g_new0(struct bt_live_viewer_connection, 1); | |
1437 | ||
1cb3cdd7 MJ |
1438 | if (bt_socket_init() != 0) { |
1439 | goto error; | |
1440 | } | |
1441 | ||
7cdc2bab | 1442 | bt_object_init(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1443 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1444 | viewer_connection->port = -1; |
4c66436f | 1445 | viewer_connection->lttng_live = lttng_live; |
7cdc2bab MD |
1446 | viewer_connection->url = g_string_new(url); |
1447 | if (!viewer_connection->url) { | |
1448 | goto error; | |
1449 | } | |
1450 | ||
087bc060 | 1451 | BT_LOGD("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1452 | if (lttng_live_connect_viewer(viewer_connection)) { |
1453 | goto error_report; | |
1454 | } | |
087bc060 | 1455 | BT_LOGD("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1456 | return viewer_connection; |
1457 | ||
1458 | error_report: | |
087bc060 | 1459 | BT_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab MD |
1460 | error: |
1461 | g_free(viewer_connection); | |
1462 | return NULL; | |
1463 | } | |
1464 | ||
1465 | BT_HIDDEN | |
1466 | void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection *viewer_connection) | |
1467 | { | |
087bc060 | 1468 | BT_LOGD("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab MD |
1469 | lttng_live_disconnect_viewer(viewer_connection); |
1470 | g_string_free(viewer_connection->url, TRUE); | |
94b828f3 MD |
1471 | if (viewer_connection->relay_hostname) { |
1472 | g_string_free(viewer_connection->relay_hostname, TRUE); | |
1473 | } | |
1474 | if (viewer_connection->target_hostname) { | |
1475 | g_string_free(viewer_connection->target_hostname, TRUE); | |
1476 | } | |
1477 | if (viewer_connection->session_name) { | |
1478 | g_string_free(viewer_connection->session_name, TRUE); | |
1479 | } | |
7cdc2bab | 1480 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1481 | |
1482 | bt_socket_fini(); | |
7cdc2bab | 1483 | } |