Commit | Line | Data |
---|---|---|
7cdc2bab | 1 | /* |
bb18709b | 2 | * Copyright 2019 - Francis Deslauriers <francis.deslauriers@efficios.com> |
7cdc2bab MD |
3 | * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
1c0ceb65 | 24 | #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level) |
b03487ab | 25 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER" |
1c0ceb65 | 26 | #include "logging/log.h" |
020bc26f | 27 | |
7cdc2bab MD |
28 | #include <stdio.h> |
29 | #include <stdint.h> | |
30 | #include <stdlib.h> | |
31 | #include <stdbool.h> | |
32 | #include <unistd.h> | |
33 | #include <glib.h> | |
34 | #include <inttypes.h> | |
7cdc2bab | 35 | #include <sys/types.h> |
7cdc2bab | 36 | #include <fcntl.h> |
7cdc2bab | 37 | |
57952005 MJ |
38 | #include "compat/socket.h" |
39 | #include "compat/endian.h" | |
40 | #include "compat/compiler.h" | |
41 | #include "common/common.h" | |
71c5da58 | 42 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 43 | |
bb18709b | 44 | #include "lttng-live.h" |
7cdc2bab MD |
45 | #include "viewer-connection.h" |
46 | #include "lttng-viewer-abi.h" | |
47 | #include "data-stream.h" | |
48 | #include "metadata.h" | |
49 | ||
bb18709b FD |
50 | static |
51 | ssize_t lttng_live_recv(struct live_viewer_connection *viewer_connection, | |
4c66436f | 52 | void *buf, size_t len) |
7cdc2bab MD |
53 | { |
54 | ssize_t ret; | |
55 | size_t copied = 0, to_copy = len; | |
bb18709b FD |
56 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
57 | viewer_connection->lttng_live_msg_iter; | |
a2147eb2 | 58 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
59 | |
60 | do { | |
a2147eb2 | 61 | ret = bt_socket_recv(sock, buf + copied, to_copy, 0); |
7cdc2bab | 62 | if (ret > 0) { |
8b45963b | 63 | BT_ASSERT(ret <= to_copy); |
7cdc2bab MD |
64 | copied += ret; |
65 | to_copy -= ret; | |
66 | } | |
a2147eb2 | 67 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { |
bb18709b | 68 | if (!viewer_connection->in_query && |
199cb5d7 | 69 | lttng_live_graph_is_canceled(lttng_live_msg_iter->lttng_live_comp)) { |
4c66436f MD |
70 | break; |
71 | } else { | |
72 | continue; | |
73 | } | |
74 | } | |
75 | } while (ret > 0 && to_copy > 0); | |
7cdc2bab MD |
76 | if (ret > 0) |
77 | ret = copied; | |
a2147eb2 | 78 | /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */ |
7cdc2bab MD |
79 | return ret; |
80 | } | |
81 | ||
bb18709b FD |
82 | static |
83 | ssize_t lttng_live_send(struct live_viewer_connection *viewer_connection, | |
4c66436f | 84 | const void *buf, size_t len) |
7cdc2bab | 85 | { |
bb18709b FD |
86 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
87 | viewer_connection->lttng_live_msg_iter; | |
a2147eb2 | 88 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
89 | ssize_t ret; |
90 | ||
4c66436f | 91 | for (;;) { |
a2147eb2 MJ |
92 | ret = bt_socket_send_nosigpipe(sock, buf, len); |
93 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { | |
bb18709b | 94 | if (!viewer_connection->in_query && |
199cb5d7 | 95 | lttng_live_graph_is_canceled(lttng_live_msg_iter->lttng_live_comp)) { |
4c66436f MD |
96 | break; |
97 | } else { | |
98 | continue; | |
99 | } | |
100 | } else { | |
101 | break; | |
102 | } | |
103 | } | |
7cdc2bab MD |
104 | return ret; |
105 | } | |
106 | ||
bb18709b FD |
107 | static |
108 | int parse_url(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 109 | { |
94b828f3 MD |
110 | char error_buf[256] = { 0 }; |
111 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; | |
112 | int ret = -1; | |
7cdc2bab | 113 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
114 | |
115 | if (!path) { | |
116 | goto end; | |
117 | } | |
7cdc2bab | 118 | |
94b828f3 MD |
119 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, |
120 | error_buf, sizeof(error_buf)); | |
121 | if (!lttng_live_url_parts.proto) { | |
122 | BT_LOGW("Invalid LTTng live URL format: %s", error_buf); | |
7cdc2bab MD |
123 | goto end; |
124 | } | |
7cdc2bab | 125 | |
94b828f3 MD |
126 | viewer_connection->relay_hostname = |
127 | lttng_live_url_parts.hostname; | |
128 | lttng_live_url_parts.hostname = NULL; | |
129 | ||
130 | if (lttng_live_url_parts.port >= 0) { | |
131 | viewer_connection->port = lttng_live_url_parts.port; | |
132 | } else { | |
7cdc2bab MD |
133 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
134 | } | |
135 | ||
94b828f3 MD |
136 | viewer_connection->target_hostname = |
137 | lttng_live_url_parts.target_hostname; | |
138 | lttng_live_url_parts.target_hostname = NULL; | |
139 | ||
140 | if (lttng_live_url_parts.session_name) { | |
141 | viewer_connection->session_name = | |
142 | lttng_live_url_parts.session_name; | |
143 | lttng_live_url_parts.session_name = NULL; | |
7cdc2bab MD |
144 | } |
145 | ||
a684a357 | 146 | BT_LOGI("Connecting to hostname : %s, port : %d, " |
7cdc2bab | 147 | "target hostname : %s, session name : %s, " |
94b828f3 MD |
148 | "proto : %s", |
149 | viewer_connection->relay_hostname->str, | |
7cdc2bab | 150 | viewer_connection->port, |
94b828f3 MD |
151 | viewer_connection->target_hostname == NULL ? |
152 | "<none>" : viewer_connection->target_hostname->str, | |
153 | viewer_connection->session_name == NULL ? | |
154 | "<none>" : viewer_connection->session_name->str, | |
155 | lttng_live_url_parts.proto->str); | |
7cdc2bab MD |
156 | ret = 0; |
157 | ||
158 | end: | |
94b828f3 | 159 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
160 | return ret; |
161 | } | |
162 | ||
bb18709b FD |
163 | static |
164 | int lttng_live_handshake(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
165 | { |
166 | struct lttng_viewer_cmd cmd; | |
167 | struct lttng_viewer_connect connect; | |
02b23da7 JR |
168 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
169 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
170 | int ret; |
171 | ssize_t ret_len; | |
172 | ||
173 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
174 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
175 | cmd.cmd_version = htobe32(0); | |
176 | ||
177 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
178 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
179 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
180 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
181 | ||
02b23da7 JR |
182 | /* |
183 | * Merge the cmd and connection request to prevent a write-write | |
184 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
185 | * second write to be performed quickly in presence of Nagle's algorithm | |
186 | */ | |
187 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
188 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
02b23da7 | 189 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 MJ |
190 | if (ret_len == BT_SOCKET_ERROR) { |
191 | BT_LOGE("Error sending version: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
192 | goto error; |
193 | } | |
8b45963b PP |
194 | |
195 | BT_ASSERT(ret_len == cmd_buf_len); | |
7cdc2bab | 196 | |
4c66436f | 197 | ret_len = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 198 | if (ret_len == 0) { |
087bc060 | 199 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
200 | goto error; |
201 | } | |
a2147eb2 MJ |
202 | if (ret_len == BT_SOCKET_ERROR) { |
203 | BT_LOGE("Error receiving version: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
204 | goto error; |
205 | } | |
8b45963b | 206 | BT_ASSERT(ret_len == sizeof(connect)); |
7cdc2bab | 207 | |
a684a357 | 208 | BT_LOGI("Received viewer session ID : %" PRIu64, |
ba412a2f | 209 | (uint64_t) be64toh(connect.viewer_session_id)); |
a684a357 | 210 | BT_LOGI("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
211 | be32toh(connect.minor)); |
212 | ||
213 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
087bc060 | 214 | BT_LOGE("Incompatible lttng-relayd protocol"); |
7cdc2bab MD |
215 | goto error; |
216 | } | |
217 | /* Use the smallest protocol version implemented. */ | |
218 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
219 | viewer_connection->minor = be32toh(connect.minor); | |
220 | } else { | |
221 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
222 | } | |
223 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
224 | ret = 0; | |
225 | return ret; | |
226 | ||
227 | error: | |
087bc060 | 228 | BT_LOGE("Unable to establish connection"); |
7cdc2bab MD |
229 | return -1; |
230 | } | |
231 | ||
bb18709b FD |
232 | static |
233 | int lttng_live_connect_viewer(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
234 | { |
235 | struct hostent *host; | |
236 | struct sockaddr_in server_addr; | |
237 | int ret; | |
238 | ||
239 | if (parse_url(viewer_connection)) { | |
240 | goto error; | |
241 | } | |
242 | ||
94b828f3 | 243 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 244 | if (!host) { |
087bc060 | 245 | BT_LOGE("Cannot lookup hostname %s", |
94b828f3 | 246 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
247 | goto error; |
248 | } | |
249 | ||
a2147eb2 MJ |
250 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
251 | BT_LOGE("Socket creation failed: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
252 | goto error; |
253 | } | |
254 | ||
255 | server_addr.sin_family = AF_INET; | |
256 | server_addr.sin_port = htons(viewer_connection->port); | |
257 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
258 | memset(&(server_addr.sin_zero), 0, 8); | |
259 | ||
260 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
a2147eb2 MJ |
261 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
262 | BT_LOGE("Connection failed: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
263 | goto error; |
264 | } | |
265 | if (lttng_live_handshake(viewer_connection)) { | |
266 | goto error; | |
267 | } | |
268 | ||
269 | ret = 0; | |
270 | ||
271 | return ret; | |
272 | ||
273 | error: | |
a2147eb2 MJ |
274 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
275 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
276 | BT_LOGE("Close: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
277 | } |
278 | } | |
a2147eb2 | 279 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
280 | return -1; |
281 | } | |
282 | ||
bb18709b FD |
283 | static |
284 | void lttng_live_disconnect_viewer( | |
285 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 286 | { |
a2147eb2 | 287 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
288 | return; |
289 | } | |
a2147eb2 MJ |
290 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
291 | BT_LOGE("Close: %s", bt_socket_errormsg()); | |
292 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
7cdc2bab MD |
293 | } |
294 | } | |
295 | ||
bb18709b FD |
296 | static |
297 | void connection_release(bt_object *obj) | |
7cdc2bab | 298 | { |
bb18709b FD |
299 | struct live_viewer_connection *conn = |
300 | container_of(obj, struct live_viewer_connection, obj); | |
7cdc2bab | 301 | |
bb18709b | 302 | live_viewer_connection_destroy(conn); |
7cdc2bab MD |
303 | } |
304 | ||
305 | static | |
bb18709b | 306 | int list_update_session(bt_value *results, |
7cdc2bab | 307 | const struct lttng_viewer_session *session, |
1c0ceb65 | 308 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 309 | { |
bb18709b | 310 | int ret = 0; |
8eee8ea2 PP |
311 | bt_value *map = NULL; |
312 | bt_value *hostname = NULL; | |
313 | bt_value *session_name = NULL; | |
314 | bt_value *btval = NULL; | |
7cdc2bab MD |
315 | int i, len; |
316 | bool found = false; | |
317 | ||
44514773 | 318 | len = bt_value_array_get_size(results); |
7cdc2bab | 319 | if (len < 0) { |
bb18709b FD |
320 | BT_LOGE_STR("Error getting size of array."); |
321 | ret = -1; | |
7cdc2bab MD |
322 | goto end; |
323 | } | |
324 | for (i = 0; i < len; i++) { | |
325 | const char *hostname_str = NULL; | |
326 | const char *session_name_str = NULL; | |
327 | ||
bb18709b | 328 | map = bt_value_array_borrow_element_by_index(results, (size_t) i); |
7cdc2bab | 329 | if (!map) { |
bb18709b FD |
330 | BT_LOGE_STR("Error borrowing map."); |
331 | ret = -1; | |
7cdc2bab MD |
332 | goto end; |
333 | } | |
bb18709b | 334 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 335 | if (!hostname) { |
bb18709b FD |
336 | BT_LOGE_STR("Error borrowing \"target-hostname\" entry."); |
337 | ret = -1; | |
7cdc2bab MD |
338 | goto end; |
339 | } | |
bb18709b | 340 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 341 | if (!session_name) { |
bb18709b FD |
342 | BT_LOGE_STR("Error borrowing \"session-name\" entry."); |
343 | ret = -1; | |
7cdc2bab MD |
344 | goto end; |
345 | } | |
b5cdc106 PP |
346 | hostname_str = bt_value_string_get(hostname); |
347 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab MD |
348 | |
349 | if (!strcmp(session->hostname, hostname_str) | |
350 | && !strcmp(session->session_name, | |
351 | session_name_str)) { | |
352 | int64_t val; | |
353 | uint32_t streams = be32toh(session->streams); | |
354 | uint32_t clients = be32toh(session->clients); | |
355 | ||
356 | found = true; | |
357 | ||
bb18709b | 358 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 359 | if (!btval) { |
bb18709b FD |
360 | BT_LOGE_STR("Error borrowing \"stream-count\" entry."); |
361 | ret = -1; | |
7cdc2bab MD |
362 | goto end; |
363 | } | |
68d9d039 | 364 | val = bt_value_signed_integer_get(btval); |
7cdc2bab MD |
365 | /* sum */ |
366 | val += streams; | |
68d9d039 | 367 | bt_value_signed_integer_set(btval, val); |
7cdc2bab | 368 | |
bb18709b | 369 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 370 | if (!btval) { |
bb18709b FD |
371 | BT_LOGE_STR("Error borrowing \"client-count\" entry."); |
372 | ret = -1; | |
7cdc2bab MD |
373 | goto end; |
374 | } | |
68d9d039 | 375 | val = bt_value_signed_integer_get(btval); |
7cdc2bab | 376 | /* max */ |
85e7137b | 377 | val = bt_max_t(int64_t, clients, val); |
68d9d039 | 378 | bt_value_signed_integer_set(btval, val); |
7cdc2bab MD |
379 | } |
380 | ||
7cdc2bab MD |
381 | if (found) { |
382 | break; | |
383 | } | |
384 | } | |
385 | end: | |
7cdc2bab MD |
386 | *_found = found; |
387 | return ret; | |
388 | } | |
389 | ||
390 | static | |
bb18709b | 391 | int list_append_session(bt_value *results, |
7cdc2bab | 392 | GString *base_url, |
1c0ceb65 PP |
393 | const struct lttng_viewer_session *session, |
394 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 395 | { |
bb18709b FD |
396 | int ret = 0; |
397 | bt_value_status ret_status; | |
8eee8ea2 | 398 | bt_value *map = NULL; |
7cdc2bab MD |
399 | GString *url = NULL; |
400 | bool found = false; | |
401 | ||
402 | /* | |
403 | * If the session already exists, add the stream count to it, | |
404 | * and do max of client counts. | |
405 | */ | |
1c0ceb65 | 406 | ret = list_update_session(results, session, &found, viewer_connection); |
bb18709b | 407 | if (ret || found) { |
7cdc2bab MD |
408 | goto end; |
409 | } | |
410 | ||
bb18709b | 411 | map = bt_value_map_create(); |
7cdc2bab | 412 | if (!map) { |
bb18709b FD |
413 | BT_LOGE_STR("Error creating map value."); |
414 | ret = -1; | |
7cdc2bab MD |
415 | goto end; |
416 | } | |
417 | ||
418 | if (base_url->len < 1) { | |
bb18709b FD |
419 | BT_LOGE_STR("Error: base_url length smaller than 1."); |
420 | ret = -1; | |
7cdc2bab MD |
421 | goto end; |
422 | } | |
423 | /* | |
424 | * key = "url", | |
425 | * value = <string>, | |
426 | */ | |
427 | url = g_string_new(base_url->str); | |
428 | g_string_append(url, "/host/"); | |
429 | g_string_append(url, session->hostname); | |
430 | g_string_append_c(url, '/'); | |
431 | g_string_append(url, session->session_name); | |
432 | ||
bb18709b FD |
433 | ret_status = bt_value_map_insert_string_entry(map, "url", url->str); |
434 | if (ret_status != BT_VALUE_STATUS_OK) { | |
435 | BT_LOGE_STR("Error inserting \"url\" entry."); | |
436 | ret = -1; | |
7cdc2bab MD |
437 | goto end; |
438 | } | |
439 | ||
440 | /* | |
441 | * key = "target-hostname", | |
442 | * value = <string>, | |
443 | */ | |
bb18709b | 444 | ret_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 445 | session->hostname); |
bb18709b FD |
446 | if (ret_status != BT_VALUE_STATUS_OK) { |
447 | BT_LOGE_STR("Error inserting \"target-hostname\" entry."); | |
448 | ret = -1; | |
7cdc2bab MD |
449 | goto end; |
450 | } | |
451 | ||
452 | /* | |
453 | * key = "session-name", | |
454 | * value = <string>, | |
455 | */ | |
bb18709b | 456 | ret_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 457 | session->session_name); |
bb18709b FD |
458 | if (ret_status != BT_VALUE_STATUS_OK) { |
459 | BT_LOGE_STR("Error inserting \"session-name\" entry."); | |
460 | ret = -1; | |
7cdc2bab MD |
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 | ||
68d9d039 PP |
471 | ret_status = bt_value_map_insert_signed_integer_entry( |
472 | map, "timer-us", live_timer); | |
bb18709b FD |
473 | if (ret_status != BT_VALUE_STATUS_OK) { |
474 | BT_LOGE_STR("Error inserting \"timer-us\" entry."); | |
475 | ret = -1; | |
7cdc2bab MD |
476 | goto end; |
477 | } | |
478 | } | |
479 | ||
480 | /* | |
481 | * key = "stream-count", | |
482 | * value = <integer>, | |
483 | */ | |
484 | { | |
485 | uint32_t streams = be32toh(session->streams); | |
486 | ||
68d9d039 PP |
487 | ret_status = bt_value_map_insert_signed_integer_entry(map, |
488 | "stream-count", streams); | |
bb18709b FD |
489 | if (ret_status != BT_VALUE_STATUS_OK) { |
490 | BT_LOGE_STR("Error inserting \"stream-count\" entry."); | |
491 | ret = -1; | |
7cdc2bab MD |
492 | goto end; |
493 | } | |
494 | } | |
495 | ||
7cdc2bab MD |
496 | /* |
497 | * key = "client-count", | |
498 | * value = <integer>, | |
499 | */ | |
500 | { | |
501 | uint32_t clients = be32toh(session->clients); | |
502 | ||
68d9d039 PP |
503 | ret_status = bt_value_map_insert_signed_integer_entry(map, |
504 | "client-count", clients); | |
bb18709b FD |
505 | if (ret_status != BT_VALUE_STATUS_OK) { |
506 | BT_LOGE_STR("Error inserting \"client-count\" entry."); | |
507 | ret = -1; | |
7cdc2bab MD |
508 | goto end; |
509 | } | |
510 | } | |
511 | ||
bb18709b FD |
512 | ret_status = bt_value_array_append_element(results, map); |
513 | if (ret_status != BT_VALUE_STATUS_OK) { | |
514 | BT_LOGE_STR("Error appending map to results."); | |
515 | ret = -1; | |
516 | } | |
517 | ||
7cdc2bab MD |
518 | end: |
519 | if (url) { | |
bb18709b | 520 | g_string_free(url, true); |
7cdc2bab | 521 | } |
8c6884d9 | 522 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
523 | return ret; |
524 | } | |
525 | ||
526 | /* | |
527 | * Data structure returned: | |
528 | * | |
529 | * { | |
530 | * <array> = { | |
531 | * [n] = { | |
532 | * <map> = { | |
533 | * { | |
534 | * key = "url", | |
535 | * value = <string>, | |
536 | * }, | |
537 | * { | |
538 | * key = "target-hostname", | |
539 | * value = <string>, | |
540 | * }, | |
541 | * { | |
542 | * key = "session-name", | |
543 | * value = <string>, | |
544 | * }, | |
545 | * { | |
546 | * key = "timer-us", | |
547 | * value = <integer>, | |
548 | * }, | |
549 | * { | |
550 | * key = "stream-count", | |
551 | * value = <integer>, | |
552 | * }, | |
553 | * { | |
554 | * key = "client-count", | |
555 | * value = <integer>, | |
556 | * }, | |
557 | * }, | |
558 | * } | |
559 | * } | |
560 | */ | |
561 | ||
562 | BT_HIDDEN | |
bb18709b FD |
563 | bt_query_status live_viewer_connection_list_sessions( |
564 | struct live_viewer_connection *viewer_connection, | |
565 | const bt_value **user_result) | |
7cdc2bab | 566 | { |
bb18709b FD |
567 | bt_query_status status = BT_QUERY_STATUS_OK; |
568 | bt_value *result = NULL; | |
7cdc2bab MD |
569 | struct lttng_viewer_cmd cmd; |
570 | struct lttng_viewer_list_sessions list; | |
571 | uint32_t i, sessions_count; | |
572 | ssize_t ret_len; | |
573 | ||
574 | if (lttng_live_handshake(viewer_connection)) { | |
575 | goto error; | |
576 | } | |
577 | ||
bb18709b FD |
578 | result = bt_value_array_create(); |
579 | if (!result) { | |
087bc060 | 580 | BT_LOGE("Error creating array"); |
bb18709b | 581 | status = BT_QUERY_STATUS_NOMEM; |
7cdc2bab MD |
582 | goto error; |
583 | } | |
584 | ||
585 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
586 | cmd.data_size = htobe64((uint64_t) 0); | |
587 | cmd.cmd_version = htobe32(0); | |
588 | ||
4c66436f | 589 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
a2147eb2 MJ |
590 | if (ret_len == BT_SOCKET_ERROR) { |
591 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
bb18709b | 592 | status = BT_QUERY_STATUS_ERROR; |
7cdc2bab MD |
593 | goto error; |
594 | } | |
8b45963b | 595 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 596 | |
4c66436f | 597 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 598 | if (ret_len == 0) { |
087bc060 | 599 | BT_LOGI("Remote side has closed connection"); |
bb18709b | 600 | status = BT_QUERY_STATUS_ERROR; |
7cdc2bab MD |
601 | goto error; |
602 | } | |
a2147eb2 MJ |
603 | if (ret_len == BT_SOCKET_ERROR) { |
604 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
bb18709b | 605 | status = BT_QUERY_STATUS_ERROR; |
7cdc2bab MD |
606 | goto error; |
607 | } | |
8b45963b | 608 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
609 | |
610 | sessions_count = be32toh(list.sessions_count); | |
611 | for (i = 0; i < sessions_count; i++) { | |
612 | struct lttng_viewer_session lsession; | |
613 | ||
bb18709b FD |
614 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
615 | sizeof(lsession)); | |
7cdc2bab | 616 | if (ret_len == 0) { |
087bc060 | 617 | BT_LOGI("Remote side has closed connection"); |
bb18709b | 618 | status = BT_QUERY_STATUS_ERROR; |
7cdc2bab MD |
619 | goto error; |
620 | } | |
a2147eb2 MJ |
621 | if (ret_len == BT_SOCKET_ERROR) { |
622 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
bb18709b | 623 | status = BT_QUERY_STATUS_ERROR; |
7cdc2bab MD |
624 | goto error; |
625 | } | |
8b45963b | 626 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
627 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
628 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
bb18709b | 629 | if (list_append_session(result, viewer_connection->url, |
1c0ceb65 | 630 | &lsession, viewer_connection)) { |
bb18709b | 631 | status = BT_QUERY_STATUS_ERROR; |
7cdc2bab MD |
632 | goto error; |
633 | } | |
634 | } | |
bb18709b FD |
635 | |
636 | *user_result = result; | |
7cdc2bab MD |
637 | goto end; |
638 | error: | |
bb18709b | 639 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 640 | end: |
bb18709b | 641 | return status; |
7cdc2bab MD |
642 | } |
643 | ||
644 | static | |
bb18709b | 645 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
646 | { |
647 | struct lttng_viewer_cmd cmd; | |
648 | struct lttng_viewer_list_sessions list; | |
649 | struct lttng_viewer_session lsession; | |
650 | uint32_t i, sessions_count; | |
651 | ssize_t ret_len; | |
652 | uint64_t session_id; | |
bb18709b FD |
653 | struct live_viewer_connection *viewer_connection = |
654 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
655 | |
656 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
657 | cmd.data_size = htobe64((uint64_t) 0); | |
658 | cmd.cmd_version = htobe32(0); | |
659 | ||
4c66436f | 660 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
a2147eb2 MJ |
661 | if (ret_len == BT_SOCKET_ERROR) { |
662 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
663 | goto error; |
664 | } | |
8b45963b | 665 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 666 | |
4c66436f | 667 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 668 | if (ret_len == 0) { |
087bc060 | 669 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
670 | goto error; |
671 | } | |
a2147eb2 MJ |
672 | if (ret_len == BT_SOCKET_ERROR) { |
673 | BT_LOGE("Error receiving session list: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
674 | goto error; |
675 | } | |
8b45963b | 676 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
677 | |
678 | sessions_count = be32toh(list.sessions_count); | |
679 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 680 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
681 | &lsession, sizeof(lsession)); |
682 | if (ret_len == 0) { | |
087bc060 | 683 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
684 | goto error; |
685 | } | |
a2147eb2 MJ |
686 | if (ret_len == BT_SOCKET_ERROR) { |
687 | BT_LOGE("Error receiving session: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
688 | goto error; |
689 | } | |
8b45963b | 690 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
691 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
692 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
693 | session_id = be64toh(lsession.id); | |
694 | ||
a684a357 | 695 | BT_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
696 | session_id, lsession.hostname, lsession.session_name); |
697 | ||
7cdc2bab | 698 | if ((strncmp(lsession.session_name, |
94b828f3 | 699 | viewer_connection->session_name->str, |
a2147eb2 | 700 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 701 | viewer_connection->target_hostname->str, |
a2147eb2 | 702 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
bb18709b | 703 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
704 | lsession.hostname, |
705 | lsession.session_name)) { | |
7cdc2bab MD |
706 | goto error; |
707 | } | |
708 | } | |
709 | } | |
710 | ||
711 | return 0; | |
712 | ||
713 | error: | |
087bc060 | 714 | BT_LOGE("Unable to query session ids"); |
7cdc2bab MD |
715 | return -1; |
716 | } | |
717 | ||
718 | BT_HIDDEN | |
bb18709b FD |
719 | int lttng_live_create_viewer_session( |
720 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
721 | { |
722 | struct lttng_viewer_cmd cmd; | |
723 | struct lttng_viewer_create_session_response resp; | |
724 | ssize_t ret_len; | |
bb18709b FD |
725 | struct live_viewer_connection *viewer_connection = |
726 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
727 | |
728 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
729 | cmd.data_size = htobe64((uint64_t) 0); | |
730 | cmd.cmd_version = htobe32(0); | |
731 | ||
4c66436f | 732 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
a2147eb2 MJ |
733 | if (ret_len == BT_SOCKET_ERROR) { |
734 | BT_LOGE("Error sending cmd: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
735 | goto error; |
736 | } | |
8b45963b | 737 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 738 | |
4c66436f | 739 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 740 | if (ret_len == 0) { |
087bc060 | 741 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
742 | goto error; |
743 | } | |
a2147eb2 MJ |
744 | if (ret_len == BT_SOCKET_ERROR) { |
745 | BT_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
746 | goto error; |
747 | } | |
8b45963b | 748 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
749 | |
750 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
087bc060 | 751 | BT_LOGE("Error creating viewer session"); |
7cdc2bab MD |
752 | goto error; |
753 | } | |
bb18709b | 754 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
7cdc2bab MD |
755 | goto error; |
756 | } | |
757 | ||
758 | return 0; | |
759 | ||
760 | error: | |
761 | return -1; | |
762 | } | |
763 | ||
764 | static | |
765 | int receive_streams(struct lttng_live_session *session, | |
766 | uint32_t stream_count) | |
767 | { | |
768 | ssize_t ret_len; | |
769 | uint32_t i; | |
bb18709b FD |
770 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
771 | session->lttng_live_msg_iter; | |
772 | struct live_viewer_connection *viewer_connection = | |
773 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 774 | |
a684a357 | 775 | BT_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
776 | for (i = 0; i < stream_count; i++) { |
777 | struct lttng_viewer_stream stream; | |
778 | struct lttng_live_stream_iterator *live_stream; | |
779 | uint64_t stream_id; | |
780 | uint64_t ctf_trace_id; | |
781 | ||
4c66436f | 782 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 783 | if (ret_len == 0) { |
087bc060 | 784 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
785 | goto error; |
786 | } | |
a2147eb2 | 787 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 788 | BT_LOGE("Error receiving stream"); |
7cdc2bab MD |
789 | goto error; |
790 | } | |
8b45963b | 791 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
792 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
793 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
794 | stream_id = be64toh(stream.id); | |
795 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
796 | ||
797 | if (stream.metadata_flag) { | |
a684a357 | 798 | BT_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
799 | stream_id, stream.path_name, |
800 | stream.channel_name); | |
801 | if (lttng_live_metadata_create_stream(session, | |
06994c71 MD |
802 | ctf_trace_id, stream_id, |
803 | stream.path_name)) { | |
087bc060 | 804 | BT_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
805 | |
806 | goto error; | |
807 | } | |
b09a5592 | 808 | session->lazy_stream_msg_init = true; |
7cdc2bab | 809 | } else { |
a684a357 | 810 | BT_LOGI(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
811 | stream_id, stream.path_name, |
812 | stream.channel_name); | |
813 | live_stream = lttng_live_stream_iterator_create(session, | |
814 | ctf_trace_id, stream_id); | |
815 | if (!live_stream) { | |
087bc060 | 816 | BT_LOGE("Error creating streamn"); |
7cdc2bab MD |
817 | goto error; |
818 | } | |
819 | } | |
820 | } | |
821 | return 0; | |
822 | ||
823 | error: | |
824 | return -1; | |
825 | } | |
826 | ||
827 | BT_HIDDEN | |
828 | int lttng_live_attach_session(struct lttng_live_session *session) | |
829 | { | |
830 | struct lttng_viewer_cmd cmd; | |
831 | struct lttng_viewer_attach_session_request rq; | |
832 | struct lttng_viewer_attach_session_response rp; | |
833 | ssize_t ret_len; | |
bb18709b FD |
834 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
835 | struct live_viewer_connection *viewer_connection = | |
836 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
837 | uint64_t session_id = session->id; |
838 | uint32_t streams_count; | |
02b23da7 JR |
839 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
840 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 841 | |
7cdc2bab MD |
842 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
843 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
844 | cmd.cmd_version = htobe32(0); | |
845 | ||
846 | memset(&rq, 0, sizeof(rq)); | |
847 | rq.session_id = htobe64(session_id); | |
848 | // TODO: add cmd line parameter to select seek beginning | |
849 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
850 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
851 | ||
02b23da7 JR |
852 | /* |
853 | * Merge the cmd and connection request to prevent a write-write | |
854 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
855 | * second write to be performed quickly in presence of Nagle's algorithm. | |
856 | */ | |
857 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
858 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 859 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 MJ |
860 | if (ret_len == BT_SOCKET_ERROR) { |
861 | BT_LOGE("Error sending attach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
862 | goto error; |
863 | } | |
7cdc2bab | 864 | |
8b45963b | 865 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 866 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 867 | if (ret_len == 0) { |
087bc060 | 868 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
869 | goto error; |
870 | } | |
a2147eb2 MJ |
871 | if (ret_len == BT_SOCKET_ERROR) { |
872 | BT_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
873 | goto error; |
874 | } | |
8b45963b | 875 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
876 | |
877 | streams_count = be32toh(rp.streams_count); | |
878 | switch(be32toh(rp.status)) { | |
879 | case LTTNG_VIEWER_ATTACH_OK: | |
880 | break; | |
881 | case LTTNG_VIEWER_ATTACH_UNK: | |
087bc060 | 882 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
883 | goto error; |
884 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
087bc060 | 885 | BT_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
886 | goto error; |
887 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
087bc060 | 888 | BT_LOGW("Not a live session"); |
7cdc2bab MD |
889 | goto error; |
890 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
087bc060 | 891 | BT_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
892 | goto error; |
893 | default: | |
087bc060 | 894 | BT_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
895 | goto error; |
896 | } | |
897 | ||
898 | /* We receive the initial list of streams. */ | |
899 | if (receive_streams(session, streams_count)) { | |
900 | goto error; | |
901 | } | |
902 | ||
903 | session->attached = true; | |
904 | session->new_streams_needed = false; | |
905 | ||
906 | return 0; | |
907 | ||
908 | error: | |
909 | return -1; | |
910 | } | |
911 | ||
912 | BT_HIDDEN | |
913 | int lttng_live_detach_session(struct lttng_live_session *session) | |
914 | { | |
915 | struct lttng_viewer_cmd cmd; | |
916 | struct lttng_viewer_detach_session_request rq; | |
917 | struct lttng_viewer_detach_session_response rp; | |
918 | ssize_t ret_len; | |
bb18709b FD |
919 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
920 | struct live_viewer_connection *viewer_connection = | |
921 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 922 | uint64_t session_id = session->id; |
02b23da7 JR |
923 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
924 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
925 | |
926 | if (!session->attached) { | |
927 | return 0; | |
928 | } | |
929 | ||
930 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
931 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
932 | cmd.cmd_version = htobe32(0); | |
933 | ||
934 | memset(&rq, 0, sizeof(rq)); | |
935 | rq.session_id = htobe64(session_id); | |
936 | ||
02b23da7 JR |
937 | /* |
938 | * Merge the cmd and connection request to prevent a write-write | |
939 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
940 | * second write to be performed quickly in presence of Nagle's algorithm. | |
941 | */ | |
942 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
943 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 944 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 MJ |
945 | if (ret_len == BT_SOCKET_ERROR) { |
946 | BT_LOGE("Error sending detach request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
947 | goto error; |
948 | } | |
7cdc2bab | 949 | |
8b45963b | 950 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 951 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 952 | if (ret_len == 0) { |
087bc060 | 953 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
954 | goto error; |
955 | } | |
a2147eb2 MJ |
956 | if (ret_len == BT_SOCKET_ERROR) { |
957 | BT_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
958 | goto error; |
959 | } | |
8b45963b | 960 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
961 | |
962 | switch(be32toh(rp.status)) { | |
963 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
964 | break; | |
965 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
087bc060 | 966 | BT_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
967 | goto error; |
968 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
087bc060 | 969 | BT_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
970 | goto error; |
971 | default: | |
087bc060 | 972 | BT_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
973 | goto error; |
974 | } | |
975 | ||
976 | session->attached = false; | |
977 | ||
978 | return 0; | |
979 | ||
980 | error: | |
981 | return -1; | |
982 | } | |
983 | ||
984 | BT_HIDDEN | |
985 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
986 | FILE *fp) | |
987 | { | |
988 | uint64_t len = 0; | |
989 | int ret; | |
990 | struct lttng_viewer_cmd cmd; | |
991 | struct lttng_viewer_get_metadata rq; | |
992 | struct lttng_viewer_metadata_packet rp; | |
993 | char *data = NULL; | |
994 | ssize_t ret_len; | |
995 | struct lttng_live_session *session = trace->session; | |
bb18709b | 996 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
7cdc2bab | 997 | struct lttng_live_metadata *metadata = trace->metadata; |
bb18709b FD |
998 | struct live_viewer_connection *viewer_connection = |
999 | lttng_live_msg_iter->viewer_connection; | |
02b23da7 JR |
1000 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1001 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1002 | |
1003 | rq.stream_id = htobe64(metadata->stream_id); | |
1004 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1005 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1006 | cmd.cmd_version = htobe32(0); | |
1007 | ||
02b23da7 JR |
1008 | /* |
1009 | * Merge the cmd and connection request to prevent a write-write | |
1010 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1011 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1012 | */ | |
1013 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1014 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1015 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 MJ |
1016 | if (ret_len == BT_SOCKET_ERROR) { |
1017 | BT_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1018 | goto error; |
1019 | } | |
7cdc2bab | 1020 | |
8b45963b | 1021 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1022 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1023 | if (ret_len == 0) { |
087bc060 | 1024 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1025 | goto error; |
1026 | } | |
a2147eb2 MJ |
1027 | if (ret_len == BT_SOCKET_ERROR) { |
1028 | BT_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1029 | goto error; |
1030 | } | |
8b45963b | 1031 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1032 | |
1033 | switch (be32toh(rp.status)) { | |
1034 | case LTTNG_VIEWER_METADATA_OK: | |
087bc060 | 1035 | BT_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1036 | break; |
1037 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
087bc060 | 1038 | BT_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1039 | ret = 0; |
1040 | goto end; | |
1041 | case LTTNG_VIEWER_METADATA_ERR: | |
087bc060 | 1042 | BT_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1043 | goto error; |
1044 | default: | |
087bc060 | 1045 | BT_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1046 | goto error; |
1047 | } | |
1048 | ||
1049 | len = be64toh(rp.len); | |
087bc060 | 1050 | BT_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1051 | if (len <= 0) { |
1052 | goto error; | |
1053 | } | |
1054 | ||
85e7137b | 1055 | data = calloc(1, len); |
7cdc2bab | 1056 | if (!data) { |
85e7137b | 1057 | BT_LOGE("relay data calloc: %s", strerror(errno)); |
7cdc2bab MD |
1058 | goto error; |
1059 | } | |
4c66436f | 1060 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1061 | if (ret_len == 0) { |
087bc060 | 1062 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1063 | goto error_free_data; |
1064 | } | |
a2147eb2 MJ |
1065 | if (ret_len == BT_SOCKET_ERROR) { |
1066 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1067 | goto error_free_data; |
1068 | } | |
8b45963b | 1069 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1070 | |
1071 | do { | |
1072 | ret_len = fwrite(data, 1, len, fp); | |
1073 | } while (ret_len < 0 && errno == EINTR); | |
1074 | if (ret_len < 0) { | |
087bc060 | 1075 | BT_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1076 | goto error_free_data; |
1077 | } | |
8b45963b | 1078 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1079 | free(data); |
1080 | ret = len; | |
1081 | end: | |
1082 | return ret; | |
1083 | ||
1084 | error_free_data: | |
1085 | free(data); | |
1086 | error: | |
1087 | return -1; | |
1088 | } | |
1089 | ||
1090 | /* | |
1091 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1092 | */ | |
1093 | static | |
1094 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1095 | struct packet_index *pindex) | |
1096 | { | |
8b45963b PP |
1097 | BT_ASSERT(lindex); |
1098 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1099 | |
1100 | pindex->offset = be64toh(lindex->offset); | |
1101 | pindex->packet_size = be64toh(lindex->packet_size); | |
1102 | pindex->content_size = be64toh(lindex->content_size); | |
1103 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1104 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1105 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1106 | } | |
1107 | ||
1108 | BT_HIDDEN | |
bb18709b FD |
1109 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1110 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1111 | struct lttng_live_stream_iterator *stream, |
1112 | struct packet_index *index) | |
1113 | { | |
1114 | struct lttng_viewer_cmd cmd; | |
1115 | struct lttng_viewer_get_next_index rq; | |
1116 | ssize_t ret_len; | |
1117 | struct lttng_viewer_index rp; | |
1118 | uint32_t flags, status; | |
bb18709b FD |
1119 | enum lttng_live_iterator_status retstatus = |
1120 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1121 | struct live_viewer_connection *viewer_connection = | |
1122 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1123 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1124 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1125 | char cmd_buf[cmd_buf_len]; | |
bb18709b FD |
1126 | struct lttng_live_component *lttng_live = |
1127 | lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab MD |
1128 | |
1129 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1130 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1131 | cmd.cmd_version = htobe32(0); | |
1132 | ||
02b23da7 | 1133 | |
7cdc2bab MD |
1134 | memset(&rq, 0, sizeof(rq)); |
1135 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1136 | ||
02b23da7 JR |
1137 | /* |
1138 | * Merge the cmd and connection request to prevent a write-write | |
1139 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1140 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1141 | */ | |
1142 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1143 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1144 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 1145 | if (ret_len == BT_SOCKET_ERROR) { |
bb18709b FD |
1146 | BT_LOGE("Error sending get_next_index request: %s", |
1147 | bt_socket_errormsg()); | |
7cdc2bab MD |
1148 | goto error; |
1149 | } | |
7cdc2bab | 1150 | |
8b45963b | 1151 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1152 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1153 | if (ret_len == 0) { |
087bc060 | 1154 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1155 | goto error; |
1156 | } | |
a2147eb2 | 1157 | if (ret_len == BT_SOCKET_ERROR) { |
bb18709b FD |
1158 | BT_LOGE("Error receiving get_next_index response: %s", |
1159 | bt_socket_errormsg()); | |
7cdc2bab MD |
1160 | goto error; |
1161 | } | |
8b45963b | 1162 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1163 | |
1164 | flags = be32toh(rp.flags); | |
1165 | status = be32toh(rp.status); | |
1166 | ||
1167 | switch (status) { | |
1168 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1169 | { | |
1170 | uint64_t ctf_stream_class_id; | |
1171 | ||
087bc060 | 1172 | BT_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1173 | memset(index, 0, sizeof(struct packet_index)); |
1174 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
bb18709b | 1175 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1176 | ctf_stream_class_id = be64toh(rp.stream_id); |
1177 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1178 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1179 | ctf_stream_class_id); |
1180 | } else { | |
1181 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1182 | } | |
1183 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1184 | break; | |
1185 | } | |
1186 | case LTTNG_VIEWER_INDEX_OK: | |
1187 | { | |
1188 | uint64_t ctf_stream_class_id; | |
1189 | ||
087bc060 | 1190 | BT_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1191 | lttng_index_to_packet_index(&rp, index); |
1192 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1193 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1194 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1195 | ctf_stream_class_id); |
1196 | } else { | |
1197 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1198 | } | |
1199 | ||
1200 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1201 | |
1202 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1203 | BT_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1204 | trace->new_metadata_needed = true; |
1205 | } | |
1206 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1207 | BT_LOGD("get_next_index: new streams needed"); |
bb18709b | 1208 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1209 | } |
1210 | break; | |
1211 | } | |
1212 | case LTTNG_VIEWER_INDEX_RETRY: | |
087bc060 | 1213 | BT_LOGD("get_next_index: retry"); |
7cdc2bab | 1214 | memset(index, 0, sizeof(struct packet_index)); |
bb18709b | 1215 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1216 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1217 | goto end; | |
1218 | case LTTNG_VIEWER_INDEX_HUP: | |
087bc060 | 1219 | BT_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1220 | memset(index, 0, sizeof(struct packet_index)); |
1221 | index->offset = EOF; | |
bb18709b | 1222 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1223 | stream->state = LTTNG_LIVE_STREAM_EOF; |
1224 | break; | |
1225 | case LTTNG_VIEWER_INDEX_ERR: | |
087bc060 | 1226 | BT_LOGE("get_next_index: error"); |
7cdc2bab MD |
1227 | memset(index, 0, sizeof(struct packet_index)); |
1228 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1229 | goto error; | |
1230 | default: | |
087bc060 | 1231 | BT_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1232 | memset(index, 0, sizeof(struct packet_index)); |
1233 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1234 | goto error; | |
1235 | } | |
1236 | end: | |
1237 | return retstatus; | |
1238 | ||
1239 | error: | |
199cb5d7 | 1240 | if (lttng_live_graph_is_canceled(lttng_live)) { |
bb18709b | 1241 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1242 | } else { |
bb18709b | 1243 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1244 | } |
7cdc2bab MD |
1245 | return retstatus; |
1246 | } | |
1247 | ||
1248 | BT_HIDDEN | |
bb18709b FD |
1249 | enum bt_msg_iter_medium_status lttng_live_get_stream_bytes( |
1250 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1251 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1252 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1253 | { |
b09a5592 | 1254 | enum bt_msg_iter_medium_status retstatus = BT_MSG_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
1255 | struct lttng_viewer_cmd cmd; |
1256 | struct lttng_viewer_get_packet rq; | |
1257 | struct lttng_viewer_trace_packet rp; | |
1258 | ssize_t ret_len; | |
1259 | uint32_t flags, status; | |
bb18709b FD |
1260 | struct live_viewer_connection *viewer_connection = |
1261 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1262 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1263 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1264 | char cmd_buf[cmd_buf_len]; | |
bb18709b FD |
1265 | struct lttng_live_component *lttng_live = |
1266 | lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab | 1267 | |
087bc060 | 1268 | BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1269 | offset, req_len); |
1270 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1271 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1272 | cmd.cmd_version = htobe32(0); | |
1273 | ||
1274 | memset(&rq, 0, sizeof(rq)); | |
1275 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1276 | rq.offset = htobe64(offset); | |
1277 | rq.len = htobe32(req_len); | |
1278 | ||
02b23da7 JR |
1279 | /* |
1280 | * Merge the cmd and connection request to prevent a write-write | |
1281 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1282 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1283 | */ | |
1284 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1285 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1286 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 MJ |
1287 | if (ret_len == BT_SOCKET_ERROR) { |
1288 | BT_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1289 | goto error; |
1290 | } | |
7cdc2bab | 1291 | |
8b45963b | 1292 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1293 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1294 | if (ret_len == 0) { |
087bc060 | 1295 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1296 | goto error; |
1297 | } | |
a2147eb2 MJ |
1298 | if (ret_len == BT_SOCKET_ERROR) { |
1299 | BT_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1300 | goto error; |
1301 | } | |
1302 | if (ret_len != sizeof(rp)) { | |
087bc060 MD |
1303 | BT_LOGE("get_data_packet: expected %zu" |
1304 | ", received %zd", sizeof(rp), | |
7cdc2bab MD |
1305 | ret_len); |
1306 | goto error; | |
1307 | } | |
1308 | ||
1309 | flags = be32toh(rp.flags); | |
1310 | status = be32toh(rp.status); | |
1311 | ||
1312 | switch (status) { | |
1313 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1314 | req_len = be32toh(rp.len); | |
087bc060 | 1315 | BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1316 | break; |
1317 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1318 | /* Unimplemented by relay daemon */ | |
087bc060 | 1319 | BT_LOGD("get_data_packet: retry"); |
b09a5592 | 1320 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1321 | goto end; |
1322 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1323 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
087bc060 | 1324 | BT_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1325 | trace->new_metadata_needed = true; |
1326 | } | |
1327 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
087bc060 | 1328 | BT_LOGD("get_data_packet: new streams needed, try again later"); |
bb18709b | 1329 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1330 | } |
1331 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1332 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
b09a5592 | 1333 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1334 | goto end; |
1335 | } | |
087bc060 | 1336 | BT_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1337 | goto error; |
1338 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
b09a5592 | 1339 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1340 | goto end; |
1341 | default: | |
087bc060 | 1342 | BT_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1343 | goto error; |
1344 | } | |
1345 | ||
1346 | if (req_len == 0) { | |
1347 | goto error; | |
1348 | } | |
1349 | ||
4c66436f | 1350 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1351 | if (ret_len == 0) { |
087bc060 | 1352 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1353 | goto error; |
1354 | } | |
a2147eb2 MJ |
1355 | if (ret_len == BT_SOCKET_ERROR) { |
1356 | BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1357 | goto error; |
1358 | } | |
8b45963b | 1359 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1360 | *recv_len = ret_len; |
1361 | end: | |
1362 | return retstatus; | |
1363 | ||
1364 | error: | |
199cb5d7 | 1365 | if (lttng_live_graph_is_canceled(lttng_live)) { |
b09a5592 | 1366 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1367 | } else { |
b09a5592 | 1368 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1369 | } |
7cdc2bab MD |
1370 | return retstatus; |
1371 | } | |
1372 | ||
1373 | /* | |
1374 | * Request new streams for a session. | |
1375 | */ | |
1376 | BT_HIDDEN | |
bb18709b | 1377 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1378 | struct lttng_live_session *session) |
1379 | { | |
bb18709b FD |
1380 | enum lttng_live_iterator_status status = |
1381 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1382 | struct lttng_viewer_cmd cmd; |
1383 | struct lttng_viewer_new_streams_request rq; | |
1384 | struct lttng_viewer_new_streams_response rp; | |
1385 | ssize_t ret_len; | |
bb18709b FD |
1386 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1387 | session->lttng_live_msg_iter; | |
1388 | struct live_viewer_connection *viewer_connection = | |
1389 | lttng_live_msg_iter->viewer_connection; | |
1390 | struct lttng_live_component *lttng_live = | |
1391 | lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab | 1392 | uint32_t streams_count; |
02b23da7 JR |
1393 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1394 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1395 | |
1396 | if (!session->new_streams_needed) { | |
bb18709b | 1397 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1398 | } |
1399 | ||
1400 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1401 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1402 | cmd.cmd_version = htobe32(0); | |
1403 | ||
1404 | memset(&rq, 0, sizeof(rq)); | |
1405 | rq.session_id = htobe64(session->id); | |
1406 | ||
02b23da7 JR |
1407 | /* |
1408 | * Merge the cmd and connection request to prevent a write-write | |
1409 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1410 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1411 | */ | |
1412 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1413 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1414 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 1415 | if (ret_len == BT_SOCKET_ERROR) { |
bb18709b FD |
1416 | BT_LOGE("Error sending get_new_streams request: %s", |
1417 | bt_socket_errormsg()); | |
7cdc2bab MD |
1418 | goto error; |
1419 | } | |
7cdc2bab | 1420 | |
8b45963b | 1421 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1422 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1423 | if (ret_len == 0) { |
087bc060 | 1424 | BT_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1425 | goto error; |
1426 | } | |
a2147eb2 | 1427 | if (ret_len == BT_SOCKET_ERROR) { |
087bc060 | 1428 | BT_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1429 | goto error; |
1430 | } | |
8b45963b | 1431 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1432 | |
1433 | streams_count = be32toh(rp.streams_count); | |
1434 | ||
1435 | switch(be32toh(rp.status)) { | |
1436 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1437 | session->new_streams_needed = false; | |
1438 | break; | |
1439 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1440 | session->new_streams_needed = false; | |
1441 | goto end; | |
1442 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1443 | session->new_streams_needed = false; | |
1444 | session->closed = true; | |
bb18709b | 1445 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1446 | goto end; |
1447 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
087bc060 | 1448 | BT_LOGE("get_new_streams error"); |
7cdc2bab MD |
1449 | goto error; |
1450 | default: | |
087bc060 | 1451 | BT_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1452 | goto error; |
1453 | } | |
1454 | ||
1455 | if (receive_streams(session, streams_count)) { | |
1456 | goto error; | |
1457 | } | |
1458 | end: | |
1459 | return status; | |
1460 | ||
1461 | error: | |
199cb5d7 | 1462 | if (lttng_live_graph_is_canceled(lttng_live)) { |
bb18709b | 1463 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1464 | } else { |
bb18709b | 1465 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1466 | } |
7cdc2bab MD |
1467 | return status; |
1468 | } | |
1469 | ||
1470 | BT_HIDDEN | |
bb18709b FD |
1471 | struct live_viewer_connection *live_viewer_connection_create( |
1472 | const char *url, bool in_query, | |
1473 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab | 1474 | { |
bb18709b | 1475 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1476 | |
bb18709b | 1477 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1478 | |
a2147eb2 MJ |
1479 | if (bt_socket_init() != 0) { |
1480 | goto error; | |
1481 | } | |
1482 | ||
1c0ceb65 | 1483 | viewer_connection->log_level = lttng_live_msg_iter->log_level; |
bb18709b | 1484 | bt_object_init_shared(&viewer_connection->obj, connection_release); |
a2147eb2 | 1485 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1486 | viewer_connection->port = -1; |
bb18709b FD |
1487 | viewer_connection->in_query = in_query; |
1488 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1489 | viewer_connection->url = g_string_new(url); |
1490 | if (!viewer_connection->url) { | |
1491 | goto error; | |
1492 | } | |
1493 | ||
a684a357 | 1494 | BT_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1495 | if (lttng_live_connect_viewer(viewer_connection)) { |
1496 | goto error_report; | |
1497 | } | |
a684a357 | 1498 | BT_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1499 | return viewer_connection; |
1500 | ||
1501 | error_report: | |
087bc060 | 1502 | BT_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab MD |
1503 | error: |
1504 | g_free(viewer_connection); | |
1505 | return NULL; | |
1506 | } | |
1507 | ||
1508 | BT_HIDDEN | |
bb18709b FD |
1509 | void live_viewer_connection_destroy( |
1510 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1511 | { |
a684a357 | 1512 | BT_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab | 1513 | lttng_live_disconnect_viewer(viewer_connection); |
bb18709b | 1514 | g_string_free(viewer_connection->url, true); |
94b828f3 | 1515 | if (viewer_connection->relay_hostname) { |
bb18709b | 1516 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 MD |
1517 | } |
1518 | if (viewer_connection->target_hostname) { | |
bb18709b | 1519 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 MD |
1520 | } |
1521 | if (viewer_connection->session_name) { | |
bb18709b | 1522 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1523 | } |
7cdc2bab | 1524 | g_free(viewer_connection); |
a2147eb2 MJ |
1525 | |
1526 | bt_socket_fini(); | |
7cdc2bab | 1527 | } |