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 | ||
5278d5ba | 24 | #define BT_COMP_LOG_SELF_COMP (viewer_connection->self_comp) |
1c0ceb65 | 25 | #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level) |
b03487ab | 26 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER" |
3fa1b6a3 | 27 | #include "logging/comp-logging.h" |
020bc26f | 28 | |
7cdc2bab MD |
29 | #include <stdio.h> |
30 | #include <stdint.h> | |
31 | #include <stdlib.h> | |
32 | #include <stdbool.h> | |
33 | #include <unistd.h> | |
34 | #include <glib.h> | |
35 | #include <inttypes.h> | |
7cdc2bab | 36 | #include <sys/types.h> |
7cdc2bab | 37 | #include <fcntl.h> |
7cdc2bab | 38 | |
57952005 MJ |
39 | #include "compat/socket.h" |
40 | #include "compat/endian.h" | |
41 | #include "compat/compiler.h" | |
42 | #include "common/common.h" | |
71c5da58 | 43 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 44 | |
bb18709b | 45 | #include "lttng-live.h" |
7cdc2bab MD |
46 | #include "viewer-connection.h" |
47 | #include "lttng-viewer-abi.h" | |
48 | #include "data-stream.h" | |
49 | #include "metadata.h" | |
50 | ||
bb18709b FD |
51 | static |
52 | ssize_t lttng_live_recv(struct live_viewer_connection *viewer_connection, | |
4c66436f | 53 | void *buf, size_t len) |
7cdc2bab MD |
54 | { |
55 | ssize_t ret; | |
56 | size_t copied = 0, to_copy = len; | |
bb18709b FD |
57 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
58 | viewer_connection->lttng_live_msg_iter; | |
a2147eb2 | 59 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
60 | |
61 | do { | |
a2147eb2 | 62 | ret = bt_socket_recv(sock, buf + copied, to_copy, 0); |
7cdc2bab | 63 | if (ret > 0) { |
8b45963b | 64 | BT_ASSERT(ret <= to_copy); |
7cdc2bab MD |
65 | copied += ret; |
66 | to_copy -= ret; | |
67 | } | |
a2147eb2 | 68 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { |
bb18709b | 69 | if (!viewer_connection->in_query && |
d73bb381 | 70 | lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
4c66436f MD |
71 | break; |
72 | } else { | |
73 | continue; | |
74 | } | |
75 | } | |
76 | } while (ret > 0 && to_copy > 0); | |
7cdc2bab MD |
77 | if (ret > 0) |
78 | ret = copied; | |
a2147eb2 | 79 | /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */ |
7cdc2bab MD |
80 | return ret; |
81 | } | |
82 | ||
bb18709b FD |
83 | static |
84 | ssize_t lttng_live_send(struct live_viewer_connection *viewer_connection, | |
4c66436f | 85 | const void *buf, size_t len) |
7cdc2bab | 86 | { |
bb18709b FD |
87 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
88 | viewer_connection->lttng_live_msg_iter; | |
a2147eb2 | 89 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
90 | ssize_t ret; |
91 | ||
4c66436f | 92 | for (;;) { |
a2147eb2 MJ |
93 | ret = bt_socket_send_nosigpipe(sock, buf, len); |
94 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { | |
bb18709b | 95 | if (!viewer_connection->in_query && |
d73bb381 | 96 | lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
4c66436f MD |
97 | break; |
98 | } else { | |
99 | continue; | |
100 | } | |
101 | } else { | |
102 | break; | |
103 | } | |
104 | } | |
7cdc2bab MD |
105 | return ret; |
106 | } | |
107 | ||
bb18709b FD |
108 | static |
109 | int parse_url(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 110 | { |
94b828f3 MD |
111 | char error_buf[256] = { 0 }; |
112 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; | |
113 | int ret = -1; | |
7cdc2bab | 114 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
115 | |
116 | if (!path) { | |
117 | goto end; | |
118 | } | |
7cdc2bab | 119 | |
0b6986b4 FD |
120 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, error_buf, |
121 | sizeof(error_buf)); | |
94b828f3 | 122 | if (!lttng_live_url_parts.proto) { |
5278d5ba | 123 | BT_COMP_LOGW("Invalid LTTng live URL format: %s", error_buf); |
7cdc2bab MD |
124 | goto end; |
125 | } | |
7cdc2bab | 126 | |
0b6986b4 | 127 | viewer_connection->relay_hostname = lttng_live_url_parts.hostname; |
94b828f3 MD |
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 | ||
0b6986b4 | 136 | viewer_connection->target_hostname = lttng_live_url_parts.target_hostname; |
94b828f3 MD |
137 | lttng_live_url_parts.target_hostname = NULL; |
138 | ||
139 | if (lttng_live_url_parts.session_name) { | |
0b6986b4 | 140 | viewer_connection->session_name = lttng_live_url_parts.session_name; |
94b828f3 | 141 | lttng_live_url_parts.session_name = NULL; |
7cdc2bab MD |
142 | } |
143 | ||
5278d5ba | 144 | BT_COMP_LOGI("Connecting to hostname : %s, port : %d, " |
0b6986b4 FD |
145 | "target hostname : %s, session name : %s, proto : %s", |
146 | viewer_connection->relay_hostname->str, | |
147 | viewer_connection->port, | |
148 | !viewer_connection->target_hostname ? | |
149 | "<none>" : viewer_connection->target_hostname->str, | |
150 | !viewer_connection->session_name ? | |
151 | "<none>" : viewer_connection->session_name->str, | |
152 | lttng_live_url_parts.proto->str); | |
7cdc2bab MD |
153 | ret = 0; |
154 | ||
155 | end: | |
94b828f3 | 156 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
157 | return ret; |
158 | } | |
159 | ||
bb18709b FD |
160 | static |
161 | int lttng_live_handshake(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
162 | { |
163 | struct lttng_viewer_cmd cmd; | |
164 | struct lttng_viewer_connect connect; | |
02b23da7 JR |
165 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
166 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
167 | int ret; |
168 | ssize_t ret_len; | |
169 | ||
170 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
171 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
172 | cmd.cmd_version = htobe32(0); | |
173 | ||
174 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
175 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
176 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
177 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
178 | ||
02b23da7 JR |
179 | /* |
180 | * Merge the cmd and connection request to prevent a write-write | |
181 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
182 | * second write to be performed quickly in presence of Nagle's algorithm | |
183 | */ | |
184 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
185 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
02b23da7 | 186 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 187 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 188 | BT_COMP_LOGE("Error sending version: %s", bt_socket_errormsg()); |
7cdc2bab MD |
189 | goto error; |
190 | } | |
8b45963b PP |
191 | |
192 | BT_ASSERT(ret_len == cmd_buf_len); | |
7cdc2bab | 193 | |
4c66436f | 194 | ret_len = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 195 | if (ret_len == 0) { |
5278d5ba | 196 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
197 | goto error; |
198 | } | |
a2147eb2 | 199 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 200 | BT_COMP_LOGE("Error receiving version: %s", bt_socket_errormsg()); |
7cdc2bab MD |
201 | goto error; |
202 | } | |
8b45963b | 203 | BT_ASSERT(ret_len == sizeof(connect)); |
7cdc2bab | 204 | |
5278d5ba | 205 | BT_COMP_LOGI("Received viewer session ID : %" PRIu64, |
ba412a2f | 206 | (uint64_t) be64toh(connect.viewer_session_id)); |
5278d5ba | 207 | BT_COMP_LOGI("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
208 | be32toh(connect.minor)); |
209 | ||
210 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
5278d5ba | 211 | BT_COMP_LOGE("Incompatible lttng-relayd protocol"); |
7cdc2bab MD |
212 | goto error; |
213 | } | |
214 | /* Use the smallest protocol version implemented. */ | |
215 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
216 | viewer_connection->minor = be32toh(connect.minor); | |
217 | } else { | |
218 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
219 | } | |
220 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
221 | ret = 0; | |
222 | return ret; | |
223 | ||
224 | error: | |
5278d5ba | 225 | BT_COMP_LOGE("Unable to establish connection"); |
7cdc2bab MD |
226 | return -1; |
227 | } | |
228 | ||
bb18709b FD |
229 | static |
230 | int lttng_live_connect_viewer(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
231 | { |
232 | struct hostent *host; | |
233 | struct sockaddr_in server_addr; | |
234 | int ret; | |
235 | ||
236 | if (parse_url(viewer_connection)) { | |
237 | goto error; | |
238 | } | |
239 | ||
94b828f3 | 240 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 241 | if (!host) { |
5278d5ba | 242 | BT_COMP_LOGE("Cannot lookup hostname %s", |
94b828f3 | 243 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
244 | goto error; |
245 | } | |
246 | ||
a2147eb2 | 247 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
5278d5ba | 248 | BT_COMP_LOGE("Socket creation failed: %s", bt_socket_errormsg()); |
7cdc2bab MD |
249 | goto error; |
250 | } | |
251 | ||
252 | server_addr.sin_family = AF_INET; | |
253 | server_addr.sin_port = htons(viewer_connection->port); | |
254 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
255 | memset(&(server_addr.sin_zero), 0, 8); | |
256 | ||
257 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
a2147eb2 | 258 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
5278d5ba | 259 | BT_COMP_LOGE("Connection failed: %s", bt_socket_errormsg()); |
7cdc2bab MD |
260 | goto error; |
261 | } | |
262 | if (lttng_live_handshake(viewer_connection)) { | |
263 | goto error; | |
264 | } | |
265 | ||
266 | ret = 0; | |
267 | ||
268 | return ret; | |
269 | ||
270 | error: | |
a2147eb2 MJ |
271 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
272 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
5278d5ba | 273 | BT_COMP_LOGE("Close: %s", bt_socket_errormsg()); |
7cdc2bab MD |
274 | } |
275 | } | |
a2147eb2 | 276 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
277 | return -1; |
278 | } | |
279 | ||
bb18709b FD |
280 | static |
281 | void lttng_live_disconnect_viewer( | |
282 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 283 | { |
a2147eb2 | 284 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
285 | return; |
286 | } | |
a2147eb2 | 287 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
5278d5ba | 288 | BT_COMP_LOGE("Close: %s", bt_socket_errormsg()); |
a2147eb2 | 289 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
290 | } |
291 | } | |
292 | ||
bb18709b FD |
293 | static |
294 | void connection_release(bt_object *obj) | |
7cdc2bab | 295 | { |
bb18709b FD |
296 | struct live_viewer_connection *conn = |
297 | container_of(obj, struct live_viewer_connection, obj); | |
7cdc2bab | 298 | |
bb18709b | 299 | live_viewer_connection_destroy(conn); |
7cdc2bab MD |
300 | } |
301 | ||
302 | static | |
bb18709b | 303 | int list_update_session(bt_value *results, |
7cdc2bab | 304 | const struct lttng_viewer_session *session, |
1c0ceb65 | 305 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 306 | { |
b602018b FD |
307 | int ret = 0; |
308 | uint64_t i, len; | |
8eee8ea2 PP |
309 | bt_value *map = NULL; |
310 | bt_value *hostname = NULL; | |
311 | bt_value *session_name = NULL; | |
312 | bt_value *btval = NULL; | |
7cdc2bab MD |
313 | bool found = false; |
314 | ||
1270d0e9 | 315 | len = bt_value_array_get_length(results); |
7cdc2bab MD |
316 | for (i = 0; i < len; i++) { |
317 | const char *hostname_str = NULL; | |
318 | const char *session_name_str = NULL; | |
319 | ||
b602018b | 320 | map = bt_value_array_borrow_element_by_index(results, i); |
7cdc2bab | 321 | if (!map) { |
5278d5ba | 322 | BT_COMP_LOGE_STR("Error borrowing map."); |
bb18709b | 323 | ret = -1; |
7cdc2bab MD |
324 | goto end; |
325 | } | |
bb18709b | 326 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 327 | if (!hostname) { |
5278d5ba | 328 | BT_COMP_LOGE_STR("Error borrowing \"target-hostname\" entry."); |
bb18709b | 329 | ret = -1; |
7cdc2bab MD |
330 | goto end; |
331 | } | |
bb18709b | 332 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 333 | if (!session_name) { |
5278d5ba | 334 | BT_COMP_LOGE_STR("Error borrowing \"session-name\" entry."); |
bb18709b | 335 | ret = -1; |
7cdc2bab MD |
336 | goto end; |
337 | } | |
b5cdc106 PP |
338 | hostname_str = bt_value_string_get(hostname); |
339 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 340 | |
acfa8112 PP |
341 | if (strcmp(session->hostname, hostname_str) == 0 |
342 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
343 | int64_t val; |
344 | uint32_t streams = be32toh(session->streams); | |
345 | uint32_t clients = be32toh(session->clients); | |
346 | ||
347 | found = true; | |
348 | ||
bb18709b | 349 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 350 | if (!btval) { |
5278d5ba | 351 | BT_COMP_LOGE_STR("Error borrowing \"stream-count\" entry."); |
bb18709b | 352 | ret = -1; |
7cdc2bab MD |
353 | goto end; |
354 | } | |
9d9daa04 | 355 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
356 | /* sum */ |
357 | val += streams; | |
9d9daa04 | 358 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 359 | |
bb18709b | 360 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 361 | if (!btval) { |
5278d5ba | 362 | BT_COMP_LOGE_STR("Error borrowing \"client-count\" entry."); |
bb18709b | 363 | ret = -1; |
7cdc2bab MD |
364 | goto end; |
365 | } | |
9d9daa04 | 366 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 367 | /* max */ |
85e7137b | 368 | val = bt_max_t(int64_t, clients, val); |
9d9daa04 | 369 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
370 | } |
371 | ||
7cdc2bab MD |
372 | if (found) { |
373 | break; | |
374 | } | |
375 | } | |
376 | end: | |
7cdc2bab MD |
377 | *_found = found; |
378 | return ret; | |
379 | } | |
380 | ||
381 | static | |
bb18709b | 382 | int list_append_session(bt_value *results, |
7cdc2bab | 383 | GString *base_url, |
1c0ceb65 PP |
384 | const struct lttng_viewer_session *session, |
385 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 386 | { |
bb18709b | 387 | int ret = 0; |
fb25b9e3 PP |
388 | bt_value_map_insert_entry_status insert_status; |
389 | bt_value_array_append_element_status append_status; | |
8eee8ea2 | 390 | bt_value *map = NULL; |
7cdc2bab MD |
391 | GString *url = NULL; |
392 | bool found = false; | |
393 | ||
394 | /* | |
395 | * If the session already exists, add the stream count to it, | |
396 | * and do max of client counts. | |
397 | */ | |
1c0ceb65 | 398 | ret = list_update_session(results, session, &found, viewer_connection); |
bb18709b | 399 | if (ret || found) { |
7cdc2bab MD |
400 | goto end; |
401 | } | |
402 | ||
bb18709b | 403 | map = bt_value_map_create(); |
7cdc2bab | 404 | if (!map) { |
5278d5ba | 405 | BT_COMP_LOGE_STR("Error creating map value."); |
bb18709b | 406 | ret = -1; |
7cdc2bab MD |
407 | goto end; |
408 | } | |
409 | ||
410 | if (base_url->len < 1) { | |
5278d5ba | 411 | BT_COMP_LOGE_STR("Error: base_url length smaller than 1."); |
bb18709b | 412 | ret = -1; |
7cdc2bab MD |
413 | goto end; |
414 | } | |
415 | /* | |
416 | * key = "url", | |
417 | * value = <string>, | |
418 | */ | |
419 | url = g_string_new(base_url->str); | |
420 | g_string_append(url, "/host/"); | |
421 | g_string_append(url, session->hostname); | |
422 | g_string_append_c(url, '/'); | |
423 | g_string_append(url, session->session_name); | |
424 | ||
fb25b9e3 PP |
425 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
426 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
5278d5ba | 427 | BT_COMP_LOGE_STR("Error inserting \"url\" entry."); |
bb18709b | 428 | ret = -1; |
7cdc2bab MD |
429 | goto end; |
430 | } | |
431 | ||
432 | /* | |
433 | * key = "target-hostname", | |
434 | * value = <string>, | |
435 | */ | |
fb25b9e3 | 436 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 437 | session->hostname); |
fb25b9e3 | 438 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
5278d5ba | 439 | BT_COMP_LOGE_STR("Error inserting \"target-hostname\" entry."); |
bb18709b | 440 | ret = -1; |
7cdc2bab MD |
441 | goto end; |
442 | } | |
443 | ||
444 | /* | |
445 | * key = "session-name", | |
446 | * value = <string>, | |
447 | */ | |
fb25b9e3 | 448 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 449 | session->session_name); |
fb25b9e3 | 450 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
5278d5ba | 451 | BT_COMP_LOGE_STR("Error inserting \"session-name\" entry."); |
bb18709b | 452 | ret = -1; |
7cdc2bab MD |
453 | goto end; |
454 | } | |
455 | ||
456 | /* | |
457 | * key = "timer-us", | |
458 | * value = <integer>, | |
459 | */ | |
460 | { | |
461 | uint32_t live_timer = be32toh(session->live_timer); | |
462 | ||
9d9daa04 | 463 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
68d9d039 | 464 | map, "timer-us", live_timer); |
fb25b9e3 | 465 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
5278d5ba | 466 | BT_COMP_LOGE_STR("Error inserting \"timer-us\" entry."); |
bb18709b | 467 | ret = -1; |
7cdc2bab MD |
468 | goto end; |
469 | } | |
470 | } | |
471 | ||
472 | /* | |
473 | * key = "stream-count", | |
474 | * value = <integer>, | |
475 | */ | |
476 | { | |
477 | uint32_t streams = be32toh(session->streams); | |
478 | ||
9d9daa04 | 479 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
68d9d039 | 480 | "stream-count", streams); |
fb25b9e3 | 481 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
5278d5ba | 482 | BT_COMP_LOGE_STR("Error inserting \"stream-count\" entry."); |
bb18709b | 483 | ret = -1; |
7cdc2bab MD |
484 | goto end; |
485 | } | |
486 | } | |
487 | ||
7cdc2bab MD |
488 | /* |
489 | * key = "client-count", | |
490 | * value = <integer>, | |
491 | */ | |
492 | { | |
493 | uint32_t clients = be32toh(session->clients); | |
494 | ||
9d9daa04 | 495 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
68d9d039 | 496 | "client-count", clients); |
fb25b9e3 | 497 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
5278d5ba | 498 | BT_COMP_LOGE_STR("Error inserting \"client-count\" entry."); |
bb18709b | 499 | ret = -1; |
7cdc2bab MD |
500 | goto end; |
501 | } | |
502 | } | |
503 | ||
fb25b9e3 PP |
504 | append_status = bt_value_array_append_element(results, map); |
505 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
5278d5ba | 506 | BT_COMP_LOGE_STR("Error appending map to results."); |
bb18709b FD |
507 | ret = -1; |
508 | } | |
509 | ||
7cdc2bab MD |
510 | end: |
511 | if (url) { | |
bb18709b | 512 | g_string_free(url, true); |
7cdc2bab | 513 | } |
8c6884d9 | 514 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
515 | return ret; |
516 | } | |
517 | ||
518 | /* | |
519 | * Data structure returned: | |
520 | * | |
521 | * { | |
522 | * <array> = { | |
523 | * [n] = { | |
524 | * <map> = { | |
525 | * { | |
526 | * key = "url", | |
527 | * value = <string>, | |
528 | * }, | |
529 | * { | |
530 | * key = "target-hostname", | |
531 | * value = <string>, | |
532 | * }, | |
533 | * { | |
534 | * key = "session-name", | |
535 | * value = <string>, | |
536 | * }, | |
537 | * { | |
538 | * key = "timer-us", | |
539 | * value = <integer>, | |
540 | * }, | |
541 | * { | |
542 | * key = "stream-count", | |
543 | * value = <integer>, | |
544 | * }, | |
545 | * { | |
546 | * key = "client-count", | |
547 | * value = <integer>, | |
548 | * }, | |
549 | * }, | |
550 | * } | |
551 | * } | |
552 | */ | |
553 | ||
554 | BT_HIDDEN | |
fb25b9e3 | 555 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
bb18709b FD |
556 | struct live_viewer_connection *viewer_connection, |
557 | const bt_value **user_result) | |
7cdc2bab | 558 | { |
fb25b9e3 PP |
559 | bt_component_class_query_method_status status = |
560 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
bb18709b | 561 | bt_value *result = NULL; |
7cdc2bab MD |
562 | struct lttng_viewer_cmd cmd; |
563 | struct lttng_viewer_list_sessions list; | |
564 | uint32_t i, sessions_count; | |
565 | ssize_t ret_len; | |
566 | ||
bb18709b FD |
567 | result = bt_value_array_create(); |
568 | if (!result) { | |
5278d5ba | 569 | BT_COMP_LOGE("Error creating array"); |
fb25b9e3 | 570 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
571 | goto error; |
572 | } | |
573 | ||
574 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
575 | cmd.data_size = htobe64((uint64_t) 0); | |
576 | cmd.cmd_version = htobe32(0); | |
577 | ||
4c66436f | 578 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
a2147eb2 | 579 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 580 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
fb25b9e3 | 581 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
582 | goto error; |
583 | } | |
8b45963b | 584 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 585 | |
4c66436f | 586 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 587 | if (ret_len == 0) { |
5278d5ba | 588 | BT_COMP_LOGI("Remote side has closed connection"); |
fb25b9e3 | 589 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
590 | goto error; |
591 | } | |
a2147eb2 | 592 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 593 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
fb25b9e3 | 594 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
595 | goto error; |
596 | } | |
8b45963b | 597 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
598 | |
599 | sessions_count = be32toh(list.sessions_count); | |
600 | for (i = 0; i < sessions_count; i++) { | |
601 | struct lttng_viewer_session lsession; | |
602 | ||
bb18709b FD |
603 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
604 | sizeof(lsession)); | |
7cdc2bab | 605 | if (ret_len == 0) { |
5278d5ba | 606 | BT_COMP_LOGI("Remote side has closed connection"); |
fb25b9e3 | 607 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
608 | goto error; |
609 | } | |
a2147eb2 | 610 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 611 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
fb25b9e3 | 612 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
613 | goto error; |
614 | } | |
8b45963b | 615 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
616 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
617 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
bb18709b | 618 | if (list_append_session(result, viewer_connection->url, |
1c0ceb65 | 619 | &lsession, viewer_connection)) { |
fb25b9e3 | 620 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
621 | goto error; |
622 | } | |
623 | } | |
bb18709b FD |
624 | |
625 | *user_result = result; | |
7cdc2bab MD |
626 | goto end; |
627 | error: | |
bb18709b | 628 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 629 | end: |
bb18709b | 630 | return status; |
7cdc2bab MD |
631 | } |
632 | ||
633 | static | |
bb18709b | 634 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
635 | { |
636 | struct lttng_viewer_cmd cmd; | |
637 | struct lttng_viewer_list_sessions list; | |
638 | struct lttng_viewer_session lsession; | |
639 | uint32_t i, sessions_count; | |
640 | ssize_t ret_len; | |
641 | uint64_t session_id; | |
bb18709b FD |
642 | struct live_viewer_connection *viewer_connection = |
643 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
644 | |
645 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
646 | cmd.data_size = htobe64((uint64_t) 0); | |
647 | cmd.cmd_version = htobe32(0); | |
648 | ||
4c66436f | 649 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
a2147eb2 | 650 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 651 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
652 | goto error; |
653 | } | |
8b45963b | 654 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 655 | |
4c66436f | 656 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 657 | if (ret_len == 0) { |
5278d5ba | 658 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
659 | goto error; |
660 | } | |
a2147eb2 | 661 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 662 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
7cdc2bab MD |
663 | goto error; |
664 | } | |
8b45963b | 665 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
666 | |
667 | sessions_count = be32toh(list.sessions_count); | |
668 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 669 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
670 | &lsession, sizeof(lsession)); |
671 | if (ret_len == 0) { | |
5278d5ba | 672 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
673 | goto error; |
674 | } | |
a2147eb2 | 675 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 676 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
7cdc2bab MD |
677 | goto error; |
678 | } | |
8b45963b | 679 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
680 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
681 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
682 | session_id = be64toh(lsession.id); | |
683 | ||
5278d5ba | 684 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
685 | session_id, lsession.hostname, lsession.session_name); |
686 | ||
7cdc2bab | 687 | if ((strncmp(lsession.session_name, |
94b828f3 | 688 | viewer_connection->session_name->str, |
a2147eb2 | 689 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 690 | viewer_connection->target_hostname->str, |
a2147eb2 | 691 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
bb18709b | 692 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
693 | lsession.hostname, |
694 | lsession.session_name)) { | |
7cdc2bab MD |
695 | goto error; |
696 | } | |
697 | } | |
698 | } | |
699 | ||
700 | return 0; | |
701 | ||
702 | error: | |
5278d5ba | 703 | BT_COMP_LOGE("Unable to query session ids"); |
7cdc2bab MD |
704 | return -1; |
705 | } | |
706 | ||
707 | BT_HIDDEN | |
bb18709b FD |
708 | int lttng_live_create_viewer_session( |
709 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
710 | { |
711 | struct lttng_viewer_cmd cmd; | |
712 | struct lttng_viewer_create_session_response resp; | |
713 | ssize_t ret_len; | |
bb18709b FD |
714 | struct live_viewer_connection *viewer_connection = |
715 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
716 | |
717 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
718 | cmd.data_size = htobe64((uint64_t) 0); | |
719 | cmd.cmd_version = htobe32(0); | |
720 | ||
4c66436f | 721 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
a2147eb2 | 722 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 723 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
724 | goto error; |
725 | } | |
8b45963b | 726 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 727 | |
4c66436f | 728 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 729 | if (ret_len == 0) { |
5278d5ba | 730 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
731 | goto error; |
732 | } | |
a2147eb2 | 733 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 734 | BT_COMP_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); |
7cdc2bab MD |
735 | goto error; |
736 | } | |
8b45963b | 737 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
738 | |
739 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
5278d5ba | 740 | BT_COMP_LOGE("Error creating viewer session"); |
7cdc2bab MD |
741 | goto error; |
742 | } | |
bb18709b | 743 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
7cdc2bab MD |
744 | goto error; |
745 | } | |
746 | ||
747 | return 0; | |
748 | ||
749 | error: | |
750 | return -1; | |
751 | } | |
752 | ||
753 | static | |
754 | int receive_streams(struct lttng_live_session *session, | |
755 | uint32_t stream_count) | |
756 | { | |
757 | ssize_t ret_len; | |
758 | uint32_t i; | |
bb18709b | 759 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0b6986b4 | 760 | session->lttng_live_msg_iter; |
bb18709b | 761 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 762 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 763 | |
5278d5ba | 764 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
765 | for (i = 0; i < stream_count; i++) { |
766 | struct lttng_viewer_stream stream; | |
767 | struct lttng_live_stream_iterator *live_stream; | |
768 | uint64_t stream_id; | |
769 | uint64_t ctf_trace_id; | |
770 | ||
4c66436f | 771 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 772 | if (ret_len == 0) { |
5278d5ba | 773 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
774 | goto error; |
775 | } | |
a2147eb2 | 776 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 777 | BT_COMP_LOGE("Error receiving stream"); |
7cdc2bab MD |
778 | goto error; |
779 | } | |
8b45963b | 780 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
781 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
782 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
783 | stream_id = be64toh(stream.id); | |
784 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
785 | ||
786 | if (stream.metadata_flag) { | |
5278d5ba | 787 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0b6986b4 | 788 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 789 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
790 | ctf_trace_id, stream_id, |
791 | stream.path_name)) { | |
5278d5ba | 792 | BT_COMP_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
793 | |
794 | goto error; | |
795 | } | |
b09a5592 | 796 | session->lazy_stream_msg_init = true; |
7cdc2bab | 797 | } else { |
5278d5ba | 798 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0b6986b4 | 799 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab MD |
800 | live_stream = lttng_live_stream_iterator_create(session, |
801 | ctf_trace_id, stream_id); | |
802 | if (!live_stream) { | |
5278d5ba | 803 | BT_COMP_LOGE("Error creating streamn"); |
7cdc2bab MD |
804 | goto error; |
805 | } | |
806 | } | |
807 | } | |
808 | return 0; | |
809 | ||
810 | error: | |
811 | return -1; | |
812 | } | |
813 | ||
814 | BT_HIDDEN | |
815 | int lttng_live_attach_session(struct lttng_live_session *session) | |
816 | { | |
817 | struct lttng_viewer_cmd cmd; | |
818 | struct lttng_viewer_attach_session_request rq; | |
819 | struct lttng_viewer_attach_session_response rp; | |
0b6986b4 FD |
820 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
821 | session->lttng_live_msg_iter; | |
bb18709b | 822 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 823 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab MD |
824 | uint64_t session_id = session->id; |
825 | uint32_t streams_count; | |
02b23da7 JR |
826 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
827 | char cmd_buf[cmd_buf_len]; | |
0b6986b4 | 828 | ssize_t ret_len; |
7cdc2bab | 829 | |
7cdc2bab MD |
830 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
831 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
832 | cmd.cmd_version = htobe32(0); | |
833 | ||
834 | memset(&rq, 0, sizeof(rq)); | |
835 | rq.session_id = htobe64(session_id); | |
836 | // TODO: add cmd line parameter to select seek beginning | |
837 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
838 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
839 | ||
02b23da7 JR |
840 | /* |
841 | * Merge the cmd and connection request to prevent a write-write | |
842 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
843 | * second write to be performed quickly in presence of Nagle's algorithm. | |
844 | */ | |
845 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
846 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 847 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 848 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 849 | BT_COMP_LOGE("Error sending attach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
850 | goto error; |
851 | } | |
7cdc2bab | 852 | |
8b45963b | 853 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 854 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 855 | if (ret_len == 0) { |
5278d5ba | 856 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
857 | goto error; |
858 | } | |
a2147eb2 | 859 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 860 | BT_COMP_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
861 | goto error; |
862 | } | |
8b45963b | 863 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
864 | |
865 | streams_count = be32toh(rp.streams_count); | |
866 | switch(be32toh(rp.status)) { | |
867 | case LTTNG_VIEWER_ATTACH_OK: | |
868 | break; | |
869 | case LTTNG_VIEWER_ATTACH_UNK: | |
5278d5ba | 870 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
871 | goto error; |
872 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
5278d5ba | 873 | BT_COMP_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
874 | goto error; |
875 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
5278d5ba | 876 | BT_COMP_LOGW("Not a live session"); |
7cdc2bab MD |
877 | goto error; |
878 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
5278d5ba | 879 | BT_COMP_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
880 | goto error; |
881 | default: | |
5278d5ba | 882 | BT_COMP_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
883 | goto error; |
884 | } | |
885 | ||
886 | /* We receive the initial list of streams. */ | |
887 | if (receive_streams(session, streams_count)) { | |
888 | goto error; | |
889 | } | |
890 | ||
891 | session->attached = true; | |
892 | session->new_streams_needed = false; | |
893 | ||
894 | return 0; | |
895 | ||
896 | error: | |
897 | return -1; | |
898 | } | |
899 | ||
900 | BT_HIDDEN | |
901 | int lttng_live_detach_session(struct lttng_live_session *session) | |
902 | { | |
903 | struct lttng_viewer_cmd cmd; | |
904 | struct lttng_viewer_detach_session_request rq; | |
905 | struct lttng_viewer_detach_session_response rp; | |
906 | ssize_t ret_len; | |
0b6986b4 FD |
907 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
908 | session->lttng_live_msg_iter; | |
bb18709b | 909 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 910 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 911 | uint64_t session_id = session->id; |
02b23da7 JR |
912 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
913 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
914 | |
915 | if (!session->attached) { | |
916 | return 0; | |
917 | } | |
918 | ||
919 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
920 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
921 | cmd.cmd_version = htobe32(0); | |
922 | ||
923 | memset(&rq, 0, sizeof(rq)); | |
924 | rq.session_id = htobe64(session_id); | |
925 | ||
02b23da7 JR |
926 | /* |
927 | * Merge the cmd and connection request to prevent a write-write | |
928 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
929 | * second write to be performed quickly in presence of Nagle's algorithm. | |
930 | */ | |
931 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
932 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 933 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 934 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 935 | BT_COMP_LOGE("Error sending detach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
936 | goto error; |
937 | } | |
7cdc2bab | 938 | |
8b45963b | 939 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 940 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 941 | if (ret_len == 0) { |
5278d5ba | 942 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
943 | goto error; |
944 | } | |
a2147eb2 | 945 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 946 | BT_COMP_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
947 | goto error; |
948 | } | |
8b45963b | 949 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
950 | |
951 | switch(be32toh(rp.status)) { | |
952 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
953 | break; | |
954 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
5278d5ba | 955 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
956 | goto error; |
957 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
5278d5ba | 958 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
959 | goto error; |
960 | default: | |
5278d5ba | 961 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
962 | goto error; |
963 | } | |
964 | ||
965 | session->attached = false; | |
966 | ||
967 | return 0; | |
968 | ||
969 | error: | |
970 | return -1; | |
971 | } | |
972 | ||
973 | BT_HIDDEN | |
974 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
975 | FILE *fp) | |
976 | { | |
977 | uint64_t len = 0; | |
978 | int ret; | |
979 | struct lttng_viewer_cmd cmd; | |
980 | struct lttng_viewer_get_metadata rq; | |
981 | struct lttng_viewer_metadata_packet rp; | |
982 | char *data = NULL; | |
983 | ssize_t ret_len; | |
984 | struct lttng_live_session *session = trace->session; | |
0b6986b4 FD |
985 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
986 | session->lttng_live_msg_iter; | |
7cdc2bab | 987 | struct lttng_live_metadata *metadata = trace->metadata; |
bb18709b | 988 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 989 | lttng_live_msg_iter->viewer_connection; |
02b23da7 JR |
990 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
991 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
992 | |
993 | rq.stream_id = htobe64(metadata->stream_id); | |
994 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
995 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
996 | cmd.cmd_version = htobe32(0); | |
997 | ||
02b23da7 JR |
998 | /* |
999 | * Merge the cmd and connection request to prevent a write-write | |
1000 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1001 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1002 | */ | |
1003 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1004 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1005 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 1006 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1007 | BT_COMP_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1008 | goto error; |
1009 | } | |
7cdc2bab | 1010 | |
8b45963b | 1011 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1012 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1013 | if (ret_len == 0) { |
5278d5ba | 1014 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1015 | goto error; |
1016 | } | |
a2147eb2 | 1017 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1018 | BT_COMP_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1019 | goto error; |
1020 | } | |
8b45963b | 1021 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1022 | |
1023 | switch (be32toh(rp.status)) { | |
1024 | case LTTNG_VIEWER_METADATA_OK: | |
5278d5ba | 1025 | BT_COMP_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1026 | break; |
1027 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
5278d5ba | 1028 | BT_COMP_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1029 | ret = 0; |
1030 | goto end; | |
1031 | case LTTNG_VIEWER_METADATA_ERR: | |
5278d5ba | 1032 | BT_COMP_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1033 | goto error; |
1034 | default: | |
5278d5ba | 1035 | BT_COMP_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1036 | goto error; |
1037 | } | |
1038 | ||
1039 | len = be64toh(rp.len); | |
5278d5ba | 1040 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1041 | if (len <= 0) { |
1042 | goto error; | |
1043 | } | |
1044 | ||
85e7137b | 1045 | data = calloc(1, len); |
7cdc2bab | 1046 | if (!data) { |
5278d5ba | 1047 | BT_COMP_LOGE("relay data calloc: %s", strerror(errno)); |
7cdc2bab MD |
1048 | goto error; |
1049 | } | |
4c66436f | 1050 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1051 | if (ret_len == 0) { |
5278d5ba | 1052 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1053 | goto error_free_data; |
1054 | } | |
a2147eb2 | 1055 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1056 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1057 | goto error_free_data; |
1058 | } | |
8b45963b | 1059 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1060 | |
1061 | do { | |
1062 | ret_len = fwrite(data, 1, len, fp); | |
1063 | } while (ret_len < 0 && errno == EINTR); | |
1064 | if (ret_len < 0) { | |
5278d5ba | 1065 | BT_COMP_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1066 | goto error_free_data; |
1067 | } | |
8b45963b | 1068 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1069 | free(data); |
1070 | ret = len; | |
1071 | end: | |
1072 | return ret; | |
1073 | ||
1074 | error_free_data: | |
1075 | free(data); | |
1076 | error: | |
1077 | return -1; | |
1078 | } | |
1079 | ||
1080 | /* | |
1081 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1082 | */ | |
1083 | static | |
1084 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1085 | struct packet_index *pindex) | |
1086 | { | |
8b45963b PP |
1087 | BT_ASSERT(lindex); |
1088 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1089 | |
1090 | pindex->offset = be64toh(lindex->offset); | |
1091 | pindex->packet_size = be64toh(lindex->packet_size); | |
1092 | pindex->content_size = be64toh(lindex->content_size); | |
1093 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1094 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1095 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1096 | } | |
1097 | ||
1098 | BT_HIDDEN | |
bb18709b FD |
1099 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1100 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1101 | struct lttng_live_stream_iterator *stream, |
1102 | struct packet_index *index) | |
1103 | { | |
1104 | struct lttng_viewer_cmd cmd; | |
1105 | struct lttng_viewer_get_next_index rq; | |
7cdc2bab | 1106 | struct lttng_viewer_index rp; |
0b6986b4 | 1107 | enum lttng_live_iterator_status retstatus = LTTNG_LIVE_ITERATOR_STATUS_OK; |
bb18709b FD |
1108 | struct live_viewer_connection *viewer_connection = |
1109 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1110 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1111 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1112 | char cmd_buf[cmd_buf_len]; | |
0b6986b4 FD |
1113 | uint32_t flags, status; |
1114 | ssize_t ret_len; | |
7cdc2bab MD |
1115 | |
1116 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1117 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1118 | cmd.cmd_version = htobe32(0); | |
1119 | ||
02b23da7 | 1120 | |
7cdc2bab MD |
1121 | memset(&rq, 0, sizeof(rq)); |
1122 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1123 | ||
02b23da7 JR |
1124 | /* |
1125 | * Merge the cmd and connection request to prevent a write-write | |
1126 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1127 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1128 | */ | |
1129 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1130 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1131 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 1132 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1133 | BT_COMP_LOGE("Error sending get_next_index request: %s", |
bb18709b | 1134 | bt_socket_errormsg()); |
7cdc2bab MD |
1135 | goto error; |
1136 | } | |
7cdc2bab | 1137 | |
8b45963b | 1138 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1139 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1140 | if (ret_len == 0) { |
5278d5ba | 1141 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1142 | goto error; |
1143 | } | |
a2147eb2 | 1144 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1145 | BT_COMP_LOGE("Error receiving get_next_index response: %s", |
bb18709b | 1146 | bt_socket_errormsg()); |
7cdc2bab MD |
1147 | goto error; |
1148 | } | |
8b45963b | 1149 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1150 | |
1151 | flags = be32toh(rp.flags); | |
1152 | status = be32toh(rp.status); | |
1153 | ||
1154 | switch (status) { | |
1155 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1156 | { | |
1157 | uint64_t ctf_stream_class_id; | |
1158 | ||
5278d5ba | 1159 | BT_COMP_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1160 | memset(index, 0, sizeof(struct packet_index)); |
1161 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
bb18709b | 1162 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1163 | ctf_stream_class_id = be64toh(rp.stream_id); |
1164 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1165 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1166 | ctf_stream_class_id); |
1167 | } else { | |
1168 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1169 | } | |
1170 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1171 | break; | |
1172 | } | |
1173 | case LTTNG_VIEWER_INDEX_OK: | |
1174 | { | |
1175 | uint64_t ctf_stream_class_id; | |
1176 | ||
5278d5ba | 1177 | BT_COMP_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1178 | lttng_index_to_packet_index(&rp, index); |
1179 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1180 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1181 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1182 | ctf_stream_class_id); |
1183 | } else { | |
1184 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1185 | } | |
1186 | ||
1187 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1188 | |
1189 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
5278d5ba | 1190 | BT_COMP_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1191 | trace->new_metadata_needed = true; |
1192 | } | |
1193 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
5278d5ba | 1194 | BT_COMP_LOGD("get_next_index: new streams needed"); |
bb18709b | 1195 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1196 | } |
1197 | break; | |
1198 | } | |
1199 | case LTTNG_VIEWER_INDEX_RETRY: | |
5278d5ba | 1200 | BT_COMP_LOGD("get_next_index: retry"); |
7cdc2bab | 1201 | memset(index, 0, sizeof(struct packet_index)); |
bb18709b | 1202 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1203 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1204 | goto end; | |
1205 | case LTTNG_VIEWER_INDEX_HUP: | |
5278d5ba | 1206 | BT_COMP_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1207 | memset(index, 0, sizeof(struct packet_index)); |
1208 | index->offset = EOF; | |
bb18709b | 1209 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab | 1210 | stream->state = LTTNG_LIVE_STREAM_EOF; |
5b337d32 | 1211 | stream->has_stream_hung_up = true; |
7cdc2bab MD |
1212 | break; |
1213 | case LTTNG_VIEWER_INDEX_ERR: | |
5278d5ba | 1214 | BT_COMP_LOGE("get_next_index: error"); |
7cdc2bab MD |
1215 | memset(index, 0, sizeof(struct packet_index)); |
1216 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1217 | goto error; | |
1218 | default: | |
5278d5ba | 1219 | BT_COMP_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1220 | memset(index, 0, sizeof(struct packet_index)); |
1221 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1222 | goto error; | |
1223 | } | |
1224 | end: | |
1225 | return retstatus; | |
1226 | ||
1227 | error: | |
d73bb381 | 1228 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
bb18709b | 1229 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1230 | } else { |
bb18709b | 1231 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1232 | } |
7cdc2bab MD |
1233 | return retstatus; |
1234 | } | |
1235 | ||
1236 | BT_HIDDEN | |
bb18709b FD |
1237 | enum bt_msg_iter_medium_status lttng_live_get_stream_bytes( |
1238 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1239 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1240 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1241 | { |
b09a5592 | 1242 | enum bt_msg_iter_medium_status retstatus = BT_MSG_ITER_MEDIUM_STATUS_OK; |
0b6986b4 | 1243 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1244 | struct lttng_viewer_cmd cmd; |
1245 | struct lttng_viewer_get_packet rq; | |
bb18709b FD |
1246 | struct live_viewer_connection *viewer_connection = |
1247 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1248 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1249 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1250 | char cmd_buf[cmd_buf_len]; | |
0b6986b4 FD |
1251 | uint32_t flags, status; |
1252 | ssize_t ret_len; | |
7cdc2bab | 1253 | |
5278d5ba | 1254 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1255 | offset, req_len); |
1256 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1257 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1258 | cmd.cmd_version = htobe32(0); | |
1259 | ||
1260 | memset(&rq, 0, sizeof(rq)); | |
1261 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1262 | rq.offset = htobe64(offset); | |
1263 | rq.len = htobe32(req_len); | |
1264 | ||
02b23da7 JR |
1265 | /* |
1266 | * Merge the cmd and connection request to prevent a write-write | |
1267 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1268 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1269 | */ | |
1270 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1271 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1272 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 1273 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1274 | BT_COMP_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1275 | goto error; |
1276 | } | |
7cdc2bab | 1277 | |
8b45963b | 1278 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1279 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1280 | if (ret_len == 0) { |
5278d5ba | 1281 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1282 | goto error; |
1283 | } | |
a2147eb2 | 1284 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1285 | BT_COMP_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1286 | goto error; |
1287 | } | |
1288 | if (ret_len != sizeof(rp)) { | |
5278d5ba | 1289 | BT_COMP_LOGE("get_data_packet: expected %zu" |
087bc060 | 1290 | ", received %zd", sizeof(rp), |
7cdc2bab MD |
1291 | ret_len); |
1292 | goto error; | |
1293 | } | |
1294 | ||
1295 | flags = be32toh(rp.flags); | |
1296 | status = be32toh(rp.status); | |
1297 | ||
1298 | switch (status) { | |
1299 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1300 | req_len = be32toh(rp.len); | |
5278d5ba | 1301 | BT_COMP_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1302 | break; |
1303 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1304 | /* Unimplemented by relay daemon */ | |
5278d5ba | 1305 | BT_COMP_LOGD("get_data_packet: retry"); |
b09a5592 | 1306 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1307 | goto end; |
1308 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1309 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
5278d5ba | 1310 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1311 | trace->new_metadata_needed = true; |
1312 | } | |
1313 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
5278d5ba | 1314 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
bb18709b | 1315 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1316 | } |
1317 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1318 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
b09a5592 | 1319 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1320 | goto end; |
1321 | } | |
5278d5ba | 1322 | BT_COMP_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1323 | goto error; |
1324 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
b09a5592 | 1325 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1326 | goto end; |
1327 | default: | |
5278d5ba | 1328 | BT_COMP_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1329 | goto error; |
1330 | } | |
1331 | ||
1332 | if (req_len == 0) { | |
1333 | goto error; | |
1334 | } | |
1335 | ||
4c66436f | 1336 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1337 | if (ret_len == 0) { |
5278d5ba | 1338 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1339 | goto error; |
1340 | } | |
a2147eb2 | 1341 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1342 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1343 | goto error; |
1344 | } | |
8b45963b | 1345 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1346 | *recv_len = ret_len; |
1347 | end: | |
1348 | return retstatus; | |
1349 | ||
1350 | error: | |
d73bb381 | 1351 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
b09a5592 | 1352 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1353 | } else { |
b09a5592 | 1354 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1355 | } |
7cdc2bab MD |
1356 | return retstatus; |
1357 | } | |
1358 | ||
1359 | /* | |
1360 | * Request new streams for a session. | |
1361 | */ | |
1362 | BT_HIDDEN | |
bb18709b | 1363 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1364 | struct lttng_live_session *session) |
1365 | { | |
bb18709b FD |
1366 | enum lttng_live_iterator_status status = |
1367 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1368 | struct lttng_viewer_cmd cmd; |
1369 | struct lttng_viewer_new_streams_request rq; | |
1370 | struct lttng_viewer_new_streams_response rp; | |
bb18709b FD |
1371 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1372 | session->lttng_live_msg_iter; | |
1373 | struct live_viewer_connection *viewer_connection = | |
1374 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1375 | uint32_t streams_count; |
02b23da7 JR |
1376 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1377 | char cmd_buf[cmd_buf_len]; | |
0b6986b4 | 1378 | ssize_t ret_len; |
7cdc2bab MD |
1379 | |
1380 | if (!session->new_streams_needed) { | |
bb18709b | 1381 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1382 | } |
1383 | ||
1384 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1385 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1386 | cmd.cmd_version = htobe32(0); | |
1387 | ||
1388 | memset(&rq, 0, sizeof(rq)); | |
1389 | rq.session_id = htobe64(session->id); | |
1390 | ||
02b23da7 JR |
1391 | /* |
1392 | * Merge the cmd and connection request to prevent a write-write | |
1393 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1394 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1395 | */ | |
1396 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1397 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
02b23da7 | 1398 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
a2147eb2 | 1399 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1400 | BT_COMP_LOGE("Error sending get_new_streams request: %s", |
bb18709b | 1401 | bt_socket_errormsg()); |
7cdc2bab MD |
1402 | goto error; |
1403 | } | |
7cdc2bab | 1404 | |
8b45963b | 1405 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1406 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1407 | if (ret_len == 0) { |
5278d5ba | 1408 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1409 | goto error; |
1410 | } | |
a2147eb2 | 1411 | if (ret_len == BT_SOCKET_ERROR) { |
5278d5ba | 1412 | BT_COMP_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1413 | goto error; |
1414 | } | |
8b45963b | 1415 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1416 | |
1417 | streams_count = be32toh(rp.streams_count); | |
1418 | ||
1419 | switch(be32toh(rp.status)) { | |
1420 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1421 | session->new_streams_needed = false; | |
1422 | break; | |
1423 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1424 | session->new_streams_needed = false; | |
1425 | goto end; | |
1426 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1427 | session->new_streams_needed = false; | |
1428 | session->closed = true; | |
bb18709b | 1429 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1430 | goto end; |
1431 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
5278d5ba | 1432 | BT_COMP_LOGE("get_new_streams error"); |
7cdc2bab MD |
1433 | goto error; |
1434 | default: | |
5278d5ba | 1435 | BT_COMP_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1436 | goto error; |
1437 | } | |
1438 | ||
1439 | if (receive_streams(session, streams_count)) { | |
1440 | goto error; | |
1441 | } | |
1442 | end: | |
1443 | return status; | |
1444 | ||
1445 | error: | |
d73bb381 | 1446 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
bb18709b | 1447 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1448 | } else { |
bb18709b | 1449 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1450 | } |
7cdc2bab MD |
1451 | return status; |
1452 | } | |
1453 | ||
1454 | BT_HIDDEN | |
bb18709b FD |
1455 | struct live_viewer_connection *live_viewer_connection_create( |
1456 | const char *url, bool in_query, | |
ca06281d PP |
1457 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1458 | bt_logging_level log_level) | |
7cdc2bab | 1459 | { |
bb18709b | 1460 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1461 | |
bb18709b | 1462 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1463 | |
ca06281d | 1464 | if (bt_socket_init(log_level) != 0) { |
a2147eb2 MJ |
1465 | goto error; |
1466 | } | |
1467 | ||
ca06281d PP |
1468 | viewer_connection->log_level = log_level; |
1469 | ||
1470 | if (lttng_live_msg_iter) { | |
1471 | viewer_connection->self_comp = lttng_live_msg_iter->self_comp; | |
1472 | } | |
1473 | ||
bb18709b | 1474 | bt_object_init_shared(&viewer_connection->obj, connection_release); |
a2147eb2 | 1475 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1476 | viewer_connection->port = -1; |
bb18709b FD |
1477 | viewer_connection->in_query = in_query; |
1478 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1479 | viewer_connection->url = g_string_new(url); |
1480 | if (!viewer_connection->url) { | |
1481 | goto error; | |
1482 | } | |
1483 | ||
5278d5ba | 1484 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1485 | if (lttng_live_connect_viewer(viewer_connection)) { |
1486 | goto error_report; | |
1487 | } | |
5278d5ba | 1488 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1489 | return viewer_connection; |
1490 | ||
1491 | error_report: | |
5278d5ba | 1492 | BT_COMP_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab | 1493 | error: |
487e99c4 PP |
1494 | if (viewer_connection) { |
1495 | live_viewer_connection_destroy(viewer_connection); | |
1496 | } | |
1497 | ||
7cdc2bab MD |
1498 | return NULL; |
1499 | } | |
1500 | ||
1501 | BT_HIDDEN | |
bb18709b FD |
1502 | void live_viewer_connection_destroy( |
1503 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1504 | { |
5278d5ba | 1505 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab | 1506 | lttng_live_disconnect_viewer(viewer_connection); |
487e99c4 PP |
1507 | if (viewer_connection->url) { |
1508 | g_string_free(viewer_connection->url, true); | |
1509 | } | |
94b828f3 | 1510 | if (viewer_connection->relay_hostname) { |
bb18709b | 1511 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 MD |
1512 | } |
1513 | if (viewer_connection->target_hostname) { | |
bb18709b | 1514 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 MD |
1515 | } |
1516 | if (viewer_connection->session_name) { | |
bb18709b | 1517 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1518 | } |
7cdc2bab | 1519 | g_free(viewer_connection); |
a2147eb2 MJ |
1520 | |
1521 | bt_socket_fini(); | |
7cdc2bab | 1522 | } |