Commit | Line | Data |
---|---|---|
7cdc2bab | 1 | /* |
14f28187 | 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 | ||
2ece7dd0 | 24 | #define BT_COMP_LOG_SELF_COMP (viewer_connection->self_comp) |
c01594de | 25 | #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level) |
350ad6c1 | 26 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER" |
d9c39b0a | 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 | |
578e048b MJ |
39 | #include "compat/socket.h" |
40 | #include "compat/endian.h" | |
41 | #include "compat/compiler.h" | |
42 | #include "common/common.h" | |
3fadfbc0 | 43 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 44 | |
14f28187 | 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 | ||
14f28187 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; | |
14f28187 FD |
57 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
58 | viewer_connection->lttng_live_msg_iter; | |
1cb3cdd7 | 59 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
60 | |
61 | do { | |
1cb3cdd7 | 62 | ret = bt_socket_recv(sock, buf + copied, to_copy, 0); |
7cdc2bab | 63 | if (ret > 0) { |
f6ccaed9 | 64 | BT_ASSERT(ret <= to_copy); |
7cdc2bab MD |
65 | copied += ret; |
66 | to_copy -= ret; | |
67 | } | |
1cb3cdd7 | 68 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { |
14f28187 | 69 | if (!viewer_connection->in_query && |
9b4f9b42 | 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; | |
1cb3cdd7 | 79 | /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */ |
7cdc2bab MD |
80 | return ret; |
81 | } | |
82 | ||
14f28187 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 | { |
14f28187 FD |
87 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
88 | viewer_connection->lttng_live_msg_iter; | |
1cb3cdd7 | 89 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
90 | ssize_t ret; |
91 | ||
4c66436f | 92 | for (;;) { |
1cb3cdd7 MJ |
93 | ret = bt_socket_send_nosigpipe(sock, buf, len); |
94 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { | |
14f28187 | 95 | if (!viewer_connection->in_query && |
9b4f9b42 | 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 | ||
14f28187 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 | |
0f1979c3 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) { |
2ece7dd0 | 123 | BT_COMP_LOGW("Invalid LTTng live URL format: %s", error_buf); |
7cdc2bab MD |
124 | goto end; |
125 | } | |
7cdc2bab | 126 | |
0f1979c3 | 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 | ||
0f1979c3 | 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) { | |
0f1979c3 | 140 | viewer_connection->session_name = lttng_live_url_parts.session_name; |
94b828f3 | 141 | lttng_live_url_parts.session_name = NULL; |
7cdc2bab MD |
142 | } |
143 | ||
2ece7dd0 | 144 | BT_COMP_LOGI("Connecting to hostname : %s, port : %d, " |
0f1979c3 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 | ||
14f28187 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; | |
bdcbd52e 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 | ||
bdcbd52e 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)); | |
bdcbd52e | 186 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 187 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 188 | BT_COMP_LOGE("Error sending version: %s", bt_socket_errormsg()); |
7cdc2bab MD |
189 | goto error; |
190 | } | |
f6ccaed9 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) { |
2ece7dd0 | 196 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
197 | goto error; |
198 | } | |
1cb3cdd7 | 199 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 200 | BT_COMP_LOGE("Error receiving version: %s", bt_socket_errormsg()); |
7cdc2bab MD |
201 | goto error; |
202 | } | |
f6ccaed9 | 203 | BT_ASSERT(ret_len == sizeof(connect)); |
7cdc2bab | 204 | |
2ece7dd0 | 205 | BT_COMP_LOGI("Received viewer session ID : %" PRIu64, |
83c78c35 | 206 | (uint64_t) be64toh(connect.viewer_session_id)); |
2ece7dd0 | 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)) { | |
2ece7dd0 | 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: | |
2ece7dd0 | 225 | BT_COMP_LOGE("Unable to establish connection"); |
7cdc2bab MD |
226 | return -1; |
227 | } | |
228 | ||
14f28187 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) { |
2ece7dd0 | 242 | BT_COMP_LOGE("Cannot lookup hostname %s", |
94b828f3 | 243 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
244 | goto error; |
245 | } | |
246 | ||
1cb3cdd7 | 247 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
2ece7dd0 | 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, | |
1cb3cdd7 | 258 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
2ece7dd0 | 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: | |
1cb3cdd7 MJ |
271 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
272 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
2ece7dd0 | 273 | BT_COMP_LOGE("Close: %s", bt_socket_errormsg()); |
7cdc2bab MD |
274 | } |
275 | } | |
1cb3cdd7 | 276 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
277 | return -1; |
278 | } | |
279 | ||
14f28187 FD |
280 | static |
281 | void lttng_live_disconnect_viewer( | |
282 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 283 | { |
1cb3cdd7 | 284 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
285 | return; |
286 | } | |
1cb3cdd7 | 287 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
2ece7dd0 | 288 | BT_COMP_LOGE("Close: %s", bt_socket_errormsg()); |
1cb3cdd7 | 289 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
290 | } |
291 | } | |
292 | ||
14f28187 FD |
293 | static |
294 | void connection_release(bt_object *obj) | |
7cdc2bab | 295 | { |
14f28187 FD |
296 | struct live_viewer_connection *conn = |
297 | container_of(obj, struct live_viewer_connection, obj); | |
7cdc2bab | 298 | |
14f28187 | 299 | live_viewer_connection_destroy(conn); |
7cdc2bab MD |
300 | } |
301 | ||
302 | static | |
14f28187 | 303 | int list_update_session(bt_value *results, |
7cdc2bab | 304 | const struct lttng_viewer_session *session, |
c01594de | 305 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 306 | { |
f80e9ec1 FD |
307 | int ret = 0; |
308 | uint64_t i, len; | |
b19ff26f 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 | ||
393729a6 | 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 | ||
f80e9ec1 | 320 | map = bt_value_array_borrow_element_by_index(results, i); |
14f28187 | 321 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 322 | if (!hostname) { |
2ece7dd0 | 323 | BT_COMP_LOGE_STR("Error borrowing \"target-hostname\" entry."); |
14f28187 | 324 | ret = -1; |
7cdc2bab MD |
325 | goto end; |
326 | } | |
14f28187 | 327 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 328 | if (!session_name) { |
2ece7dd0 | 329 | BT_COMP_LOGE_STR("Error borrowing \"session-name\" entry."); |
14f28187 | 330 | ret = -1; |
7cdc2bab MD |
331 | goto end; |
332 | } | |
601b0d3c PP |
333 | hostname_str = bt_value_string_get(hostname); |
334 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 335 | |
2242b43d PP |
336 | if (strcmp(session->hostname, hostname_str) == 0 |
337 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
338 | int64_t val; |
339 | uint32_t streams = be32toh(session->streams); | |
340 | uint32_t clients = be32toh(session->clients); | |
341 | ||
342 | found = true; | |
343 | ||
14f28187 | 344 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 345 | if (!btval) { |
2ece7dd0 | 346 | BT_COMP_LOGE_STR("Error borrowing \"stream-count\" entry."); |
14f28187 | 347 | ret = -1; |
7cdc2bab MD |
348 | goto end; |
349 | } | |
a91cb83e | 350 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
351 | /* sum */ |
352 | val += streams; | |
a91cb83e | 353 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 354 | |
14f28187 | 355 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 356 | if (!btval) { |
2ece7dd0 | 357 | BT_COMP_LOGE_STR("Error borrowing \"client-count\" entry."); |
14f28187 | 358 | ret = -1; |
7cdc2bab MD |
359 | goto end; |
360 | } | |
a91cb83e | 361 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 362 | /* max */ |
91d81473 | 363 | val = bt_max_t(int64_t, clients, val); |
a91cb83e | 364 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
365 | } |
366 | ||
7cdc2bab MD |
367 | if (found) { |
368 | break; | |
369 | } | |
370 | } | |
371 | end: | |
7cdc2bab MD |
372 | *_found = found; |
373 | return ret; | |
374 | } | |
375 | ||
376 | static | |
14f28187 | 377 | int list_append_session(bt_value *results, |
7cdc2bab | 378 | GString *base_url, |
c01594de PP |
379 | const struct lttng_viewer_session *session, |
380 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 381 | { |
14f28187 | 382 | int ret = 0; |
d24d5663 PP |
383 | bt_value_map_insert_entry_status insert_status; |
384 | bt_value_array_append_element_status append_status; | |
b19ff26f | 385 | bt_value *map = NULL; |
7cdc2bab MD |
386 | GString *url = NULL; |
387 | bool found = false; | |
388 | ||
389 | /* | |
390 | * If the session already exists, add the stream count to it, | |
391 | * and do max of client counts. | |
392 | */ | |
c01594de | 393 | ret = list_update_session(results, session, &found, viewer_connection); |
14f28187 | 394 | if (ret || found) { |
7cdc2bab MD |
395 | goto end; |
396 | } | |
397 | ||
14f28187 | 398 | map = bt_value_map_create(); |
7cdc2bab | 399 | if (!map) { |
2ece7dd0 | 400 | BT_COMP_LOGE_STR("Error creating map value."); |
14f28187 | 401 | ret = -1; |
7cdc2bab MD |
402 | goto end; |
403 | } | |
404 | ||
405 | if (base_url->len < 1) { | |
2ece7dd0 | 406 | BT_COMP_LOGE_STR("Error: base_url length smaller than 1."); |
14f28187 | 407 | ret = -1; |
7cdc2bab MD |
408 | goto end; |
409 | } | |
410 | /* | |
411 | * key = "url", | |
412 | * value = <string>, | |
413 | */ | |
414 | url = g_string_new(base_url->str); | |
415 | g_string_append(url, "/host/"); | |
416 | g_string_append(url, session->hostname); | |
417 | g_string_append_c(url, '/'); | |
418 | g_string_append(url, session->session_name); | |
419 | ||
d24d5663 PP |
420 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
421 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
2ece7dd0 | 422 | BT_COMP_LOGE_STR("Error inserting \"url\" entry."); |
14f28187 | 423 | ret = -1; |
7cdc2bab MD |
424 | goto end; |
425 | } | |
426 | ||
427 | /* | |
428 | * key = "target-hostname", | |
429 | * value = <string>, | |
430 | */ | |
d24d5663 | 431 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 432 | session->hostname); |
d24d5663 | 433 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 434 | BT_COMP_LOGE_STR("Error inserting \"target-hostname\" entry."); |
14f28187 | 435 | ret = -1; |
7cdc2bab MD |
436 | goto end; |
437 | } | |
438 | ||
439 | /* | |
440 | * key = "session-name", | |
441 | * value = <string>, | |
442 | */ | |
d24d5663 | 443 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 444 | session->session_name); |
d24d5663 | 445 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 446 | BT_COMP_LOGE_STR("Error inserting \"session-name\" entry."); |
14f28187 | 447 | ret = -1; |
7cdc2bab MD |
448 | goto end; |
449 | } | |
450 | ||
451 | /* | |
452 | * key = "timer-us", | |
453 | * value = <integer>, | |
454 | */ | |
455 | { | |
456 | uint32_t live_timer = be32toh(session->live_timer); | |
457 | ||
a91cb83e | 458 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
fdd3a2da | 459 | map, "timer-us", live_timer); |
d24d5663 | 460 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 461 | BT_COMP_LOGE_STR("Error inserting \"timer-us\" entry."); |
14f28187 | 462 | ret = -1; |
7cdc2bab MD |
463 | goto end; |
464 | } | |
465 | } | |
466 | ||
467 | /* | |
468 | * key = "stream-count", | |
469 | * value = <integer>, | |
470 | */ | |
471 | { | |
472 | uint32_t streams = be32toh(session->streams); | |
473 | ||
a91cb83e | 474 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 475 | "stream-count", streams); |
d24d5663 | 476 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 477 | BT_COMP_LOGE_STR("Error inserting \"stream-count\" entry."); |
14f28187 | 478 | ret = -1; |
7cdc2bab MD |
479 | goto end; |
480 | } | |
481 | } | |
482 | ||
7cdc2bab MD |
483 | /* |
484 | * key = "client-count", | |
485 | * value = <integer>, | |
486 | */ | |
487 | { | |
488 | uint32_t clients = be32toh(session->clients); | |
489 | ||
a91cb83e | 490 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 491 | "client-count", clients); |
d24d5663 | 492 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 493 | BT_COMP_LOGE_STR("Error inserting \"client-count\" entry."); |
14f28187 | 494 | ret = -1; |
7cdc2bab MD |
495 | goto end; |
496 | } | |
497 | } | |
498 | ||
d24d5663 PP |
499 | append_status = bt_value_array_append_element(results, map); |
500 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
2ece7dd0 | 501 | BT_COMP_LOGE_STR("Error appending map to results."); |
14f28187 FD |
502 | ret = -1; |
503 | } | |
504 | ||
7cdc2bab MD |
505 | end: |
506 | if (url) { | |
14f28187 | 507 | g_string_free(url, true); |
7cdc2bab | 508 | } |
c5b9b441 | 509 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
510 | return ret; |
511 | } | |
512 | ||
513 | /* | |
514 | * Data structure returned: | |
515 | * | |
516 | * { | |
517 | * <array> = { | |
518 | * [n] = { | |
519 | * <map> = { | |
520 | * { | |
521 | * key = "url", | |
522 | * value = <string>, | |
523 | * }, | |
524 | * { | |
525 | * key = "target-hostname", | |
526 | * value = <string>, | |
527 | * }, | |
528 | * { | |
529 | * key = "session-name", | |
530 | * value = <string>, | |
531 | * }, | |
532 | * { | |
533 | * key = "timer-us", | |
534 | * value = <integer>, | |
535 | * }, | |
536 | * { | |
537 | * key = "stream-count", | |
538 | * value = <integer>, | |
539 | * }, | |
540 | * { | |
541 | * key = "client-count", | |
542 | * value = <integer>, | |
543 | * }, | |
544 | * }, | |
545 | * } | |
546 | * } | |
547 | */ | |
548 | ||
549 | BT_HIDDEN | |
d24d5663 | 550 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
14f28187 FD |
551 | struct live_viewer_connection *viewer_connection, |
552 | const bt_value **user_result) | |
7cdc2bab | 553 | { |
d24d5663 PP |
554 | bt_component_class_query_method_status status = |
555 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
14f28187 | 556 | bt_value *result = NULL; |
7cdc2bab MD |
557 | struct lttng_viewer_cmd cmd; |
558 | struct lttng_viewer_list_sessions list; | |
559 | uint32_t i, sessions_count; | |
560 | ssize_t ret_len; | |
561 | ||
14f28187 FD |
562 | result = bt_value_array_create(); |
563 | if (!result) { | |
2ece7dd0 | 564 | BT_COMP_LOGE("Error creating array"); |
d24d5663 | 565 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
566 | goto error; |
567 | } | |
568 | ||
569 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
570 | cmd.data_size = htobe64((uint64_t) 0); | |
571 | cmd.cmd_version = htobe32(0); | |
572 | ||
4c66436f | 573 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 574 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 575 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
d24d5663 | 576 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
577 | goto error; |
578 | } | |
f6ccaed9 | 579 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 580 | |
4c66436f | 581 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 582 | if (ret_len == 0) { |
2ece7dd0 | 583 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 584 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
585 | goto error; |
586 | } | |
1cb3cdd7 | 587 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 588 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
d24d5663 | 589 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
590 | goto error; |
591 | } | |
f6ccaed9 | 592 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
593 | |
594 | sessions_count = be32toh(list.sessions_count); | |
595 | for (i = 0; i < sessions_count; i++) { | |
596 | struct lttng_viewer_session lsession; | |
597 | ||
14f28187 FD |
598 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
599 | sizeof(lsession)); | |
7cdc2bab | 600 | if (ret_len == 0) { |
2ece7dd0 | 601 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 602 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
603 | goto error; |
604 | } | |
1cb3cdd7 | 605 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 606 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
d24d5663 | 607 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
608 | goto error; |
609 | } | |
f6ccaed9 | 610 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
611 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
612 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
14f28187 | 613 | if (list_append_session(result, viewer_connection->url, |
c01594de | 614 | &lsession, viewer_connection)) { |
d24d5663 | 615 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
616 | goto error; |
617 | } | |
618 | } | |
14f28187 FD |
619 | |
620 | *user_result = result; | |
7cdc2bab MD |
621 | goto end; |
622 | error: | |
14f28187 | 623 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 624 | end: |
14f28187 | 625 | return status; |
7cdc2bab MD |
626 | } |
627 | ||
628 | static | |
14f28187 | 629 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
630 | { |
631 | struct lttng_viewer_cmd cmd; | |
632 | struct lttng_viewer_list_sessions list; | |
633 | struct lttng_viewer_session lsession; | |
634 | uint32_t i, sessions_count; | |
635 | ssize_t ret_len; | |
636 | uint64_t session_id; | |
14f28187 FD |
637 | struct live_viewer_connection *viewer_connection = |
638 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
639 | |
640 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
641 | cmd.data_size = htobe64((uint64_t) 0); | |
642 | cmd.cmd_version = htobe32(0); | |
643 | ||
4c66436f | 644 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 645 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 646 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
647 | goto error; |
648 | } | |
f6ccaed9 | 649 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 650 | |
4c66436f | 651 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 652 | if (ret_len == 0) { |
2ece7dd0 | 653 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
654 | goto error; |
655 | } | |
1cb3cdd7 | 656 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 657 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
7cdc2bab MD |
658 | goto error; |
659 | } | |
f6ccaed9 | 660 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
661 | |
662 | sessions_count = be32toh(list.sessions_count); | |
663 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 664 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
665 | &lsession, sizeof(lsession)); |
666 | if (ret_len == 0) { | |
2ece7dd0 | 667 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
668 | goto error; |
669 | } | |
1cb3cdd7 | 670 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 671 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
7cdc2bab MD |
672 | goto error; |
673 | } | |
f6ccaed9 | 674 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
675 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
676 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
677 | session_id = be64toh(lsession.id); | |
678 | ||
2ece7dd0 | 679 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
680 | session_id, lsession.hostname, lsession.session_name); |
681 | ||
7cdc2bab | 682 | if ((strncmp(lsession.session_name, |
94b828f3 | 683 | viewer_connection->session_name->str, |
1cb3cdd7 | 684 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 685 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 686 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
14f28187 | 687 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
688 | lsession.hostname, |
689 | lsession.session_name)) { | |
7cdc2bab MD |
690 | goto error; |
691 | } | |
692 | } | |
693 | } | |
694 | ||
695 | return 0; | |
696 | ||
697 | error: | |
2ece7dd0 | 698 | BT_COMP_LOGE("Unable to query session ids"); |
7cdc2bab MD |
699 | return -1; |
700 | } | |
701 | ||
702 | BT_HIDDEN | |
14f28187 FD |
703 | int lttng_live_create_viewer_session( |
704 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
705 | { |
706 | struct lttng_viewer_cmd cmd; | |
707 | struct lttng_viewer_create_session_response resp; | |
708 | ssize_t ret_len; | |
14f28187 FD |
709 | struct live_viewer_connection *viewer_connection = |
710 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
711 | |
712 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
713 | cmd.data_size = htobe64((uint64_t) 0); | |
714 | cmd.cmd_version = htobe32(0); | |
715 | ||
4c66436f | 716 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 717 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 718 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
719 | goto error; |
720 | } | |
f6ccaed9 | 721 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 722 | |
4c66436f | 723 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 724 | if (ret_len == 0) { |
2ece7dd0 | 725 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
726 | goto error; |
727 | } | |
1cb3cdd7 | 728 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 729 | BT_COMP_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); |
7cdc2bab MD |
730 | goto error; |
731 | } | |
f6ccaed9 | 732 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
733 | |
734 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
2ece7dd0 | 735 | BT_COMP_LOGE("Error creating viewer session"); |
7cdc2bab MD |
736 | goto error; |
737 | } | |
14f28187 | 738 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
7cdc2bab MD |
739 | goto error; |
740 | } | |
741 | ||
742 | return 0; | |
743 | ||
744 | error: | |
745 | return -1; | |
746 | } | |
747 | ||
748 | static | |
749 | int receive_streams(struct lttng_live_session *session, | |
750 | uint32_t stream_count) | |
751 | { | |
752 | ssize_t ret_len; | |
753 | uint32_t i; | |
14f28187 | 754 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0f1979c3 | 755 | session->lttng_live_msg_iter; |
14f28187 | 756 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 757 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 758 | |
2ece7dd0 | 759 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
760 | for (i = 0; i < stream_count; i++) { |
761 | struct lttng_viewer_stream stream; | |
762 | struct lttng_live_stream_iterator *live_stream; | |
763 | uint64_t stream_id; | |
764 | uint64_t ctf_trace_id; | |
765 | ||
4c66436f | 766 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 767 | if (ret_len == 0) { |
2ece7dd0 | 768 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
769 | goto error; |
770 | } | |
1cb3cdd7 | 771 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 772 | BT_COMP_LOGE("Error receiving stream"); |
7cdc2bab MD |
773 | goto error; |
774 | } | |
f6ccaed9 | 775 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
776 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
777 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
778 | stream_id = be64toh(stream.id); | |
779 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
780 | ||
781 | if (stream.metadata_flag) { | |
2ece7dd0 | 782 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0f1979c3 | 783 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 784 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
785 | ctf_trace_id, stream_id, |
786 | stream.path_name)) { | |
2ece7dd0 | 787 | BT_COMP_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
788 | |
789 | goto error; | |
790 | } | |
d6e69534 | 791 | session->lazy_stream_msg_init = true; |
7cdc2bab | 792 | } else { |
2ece7dd0 | 793 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0f1979c3 | 794 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab MD |
795 | live_stream = lttng_live_stream_iterator_create(session, |
796 | ctf_trace_id, stream_id); | |
797 | if (!live_stream) { | |
2ece7dd0 | 798 | BT_COMP_LOGE("Error creating streamn"); |
7cdc2bab MD |
799 | goto error; |
800 | } | |
801 | } | |
802 | } | |
803 | return 0; | |
804 | ||
805 | error: | |
806 | return -1; | |
807 | } | |
808 | ||
809 | BT_HIDDEN | |
810 | int lttng_live_attach_session(struct lttng_live_session *session) | |
811 | { | |
812 | struct lttng_viewer_cmd cmd; | |
813 | struct lttng_viewer_attach_session_request rq; | |
814 | struct lttng_viewer_attach_session_response rp; | |
0f1979c3 FD |
815 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
816 | session->lttng_live_msg_iter; | |
14f28187 | 817 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 818 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab MD |
819 | uint64_t session_id = session->id; |
820 | uint32_t streams_count; | |
bdcbd52e JR |
821 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
822 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 823 | ssize_t ret_len; |
7cdc2bab | 824 | |
7cdc2bab MD |
825 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
826 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
827 | cmd.cmd_version = htobe32(0); | |
828 | ||
829 | memset(&rq, 0, sizeof(rq)); | |
830 | rq.session_id = htobe64(session_id); | |
831 | // TODO: add cmd line parameter to select seek beginning | |
832 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
833 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
834 | ||
bdcbd52e JR |
835 | /* |
836 | * Merge the cmd and connection request to prevent a write-write | |
837 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
838 | * second write to be performed quickly in presence of Nagle's algorithm. | |
839 | */ | |
840 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
841 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 842 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 843 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 844 | BT_COMP_LOGE("Error sending attach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
845 | goto error; |
846 | } | |
7cdc2bab | 847 | |
f6ccaed9 | 848 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 849 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 850 | if (ret_len == 0) { |
2ece7dd0 | 851 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
852 | goto error; |
853 | } | |
1cb3cdd7 | 854 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 855 | BT_COMP_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
856 | goto error; |
857 | } | |
f6ccaed9 | 858 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
859 | |
860 | streams_count = be32toh(rp.streams_count); | |
861 | switch(be32toh(rp.status)) { | |
862 | case LTTNG_VIEWER_ATTACH_OK: | |
863 | break; | |
864 | case LTTNG_VIEWER_ATTACH_UNK: | |
2ece7dd0 | 865 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
866 | goto error; |
867 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
2ece7dd0 | 868 | BT_COMP_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
869 | goto error; |
870 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
2ece7dd0 | 871 | BT_COMP_LOGW("Not a live session"); |
7cdc2bab MD |
872 | goto error; |
873 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
2ece7dd0 | 874 | BT_COMP_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
875 | goto error; |
876 | default: | |
2ece7dd0 | 877 | BT_COMP_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
878 | goto error; |
879 | } | |
880 | ||
881 | /* We receive the initial list of streams. */ | |
882 | if (receive_streams(session, streams_count)) { | |
883 | goto error; | |
884 | } | |
885 | ||
886 | session->attached = true; | |
887 | session->new_streams_needed = false; | |
888 | ||
889 | return 0; | |
890 | ||
891 | error: | |
892 | return -1; | |
893 | } | |
894 | ||
895 | BT_HIDDEN | |
896 | int lttng_live_detach_session(struct lttng_live_session *session) | |
897 | { | |
898 | struct lttng_viewer_cmd cmd; | |
899 | struct lttng_viewer_detach_session_request rq; | |
900 | struct lttng_viewer_detach_session_response rp; | |
901 | ssize_t ret_len; | |
0f1979c3 FD |
902 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
903 | session->lttng_live_msg_iter; | |
14f28187 | 904 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 905 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 906 | uint64_t session_id = session->id; |
bdcbd52e JR |
907 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
908 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
909 | |
910 | if (!session->attached) { | |
911 | return 0; | |
912 | } | |
913 | ||
914 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
915 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
916 | cmd.cmd_version = htobe32(0); | |
917 | ||
918 | memset(&rq, 0, sizeof(rq)); | |
919 | rq.session_id = htobe64(session_id); | |
920 | ||
bdcbd52e JR |
921 | /* |
922 | * Merge the cmd and connection request to prevent a write-write | |
923 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
924 | * second write to be performed quickly in presence of Nagle's algorithm. | |
925 | */ | |
926 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
927 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 928 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 929 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 930 | BT_COMP_LOGE("Error sending detach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
931 | goto error; |
932 | } | |
7cdc2bab | 933 | |
f6ccaed9 | 934 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 935 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 936 | if (ret_len == 0) { |
2ece7dd0 | 937 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
938 | goto error; |
939 | } | |
1cb3cdd7 | 940 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 941 | BT_COMP_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
942 | goto error; |
943 | } | |
f6ccaed9 | 944 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
945 | |
946 | switch(be32toh(rp.status)) { | |
947 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
948 | break; | |
949 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
2ece7dd0 | 950 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
951 | goto error; |
952 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
2ece7dd0 | 953 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
954 | goto error; |
955 | default: | |
2ece7dd0 | 956 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
957 | goto error; |
958 | } | |
959 | ||
960 | session->attached = false; | |
961 | ||
962 | return 0; | |
963 | ||
964 | error: | |
965 | return -1; | |
966 | } | |
967 | ||
968 | BT_HIDDEN | |
969 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
970 | FILE *fp) | |
971 | { | |
972 | uint64_t len = 0; | |
973 | int ret; | |
974 | struct lttng_viewer_cmd cmd; | |
975 | struct lttng_viewer_get_metadata rq; | |
976 | struct lttng_viewer_metadata_packet rp; | |
977 | char *data = NULL; | |
978 | ssize_t ret_len; | |
979 | struct lttng_live_session *session = trace->session; | |
0f1979c3 FD |
980 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
981 | session->lttng_live_msg_iter; | |
7cdc2bab | 982 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 | 983 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 984 | lttng_live_msg_iter->viewer_connection; |
bdcbd52e JR |
985 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
986 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
987 | |
988 | rq.stream_id = htobe64(metadata->stream_id); | |
989 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
990 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
991 | cmd.cmd_version = htobe32(0); | |
992 | ||
bdcbd52e JR |
993 | /* |
994 | * Merge the cmd and connection request to prevent a write-write | |
995 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
996 | * second write to be performed quickly in presence of Nagle's algorithm. | |
997 | */ | |
998 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
999 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1000 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1001 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1002 | BT_COMP_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1003 | goto error; |
1004 | } | |
7cdc2bab | 1005 | |
f6ccaed9 | 1006 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1007 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1008 | if (ret_len == 0) { |
2ece7dd0 | 1009 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1010 | goto error; |
1011 | } | |
1cb3cdd7 | 1012 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1013 | BT_COMP_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1014 | goto error; |
1015 | } | |
f6ccaed9 | 1016 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1017 | |
1018 | switch (be32toh(rp.status)) { | |
1019 | case LTTNG_VIEWER_METADATA_OK: | |
2ece7dd0 | 1020 | BT_COMP_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1021 | break; |
1022 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
2ece7dd0 | 1023 | BT_COMP_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1024 | ret = 0; |
1025 | goto end; | |
1026 | case LTTNG_VIEWER_METADATA_ERR: | |
2ece7dd0 | 1027 | BT_COMP_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1028 | goto error; |
1029 | default: | |
2ece7dd0 | 1030 | BT_COMP_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1031 | goto error; |
1032 | } | |
1033 | ||
1034 | len = be64toh(rp.len); | |
2ece7dd0 | 1035 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1036 | if (len <= 0) { |
1037 | goto error; | |
1038 | } | |
1039 | ||
91d81473 | 1040 | data = calloc(1, len); |
7cdc2bab | 1041 | if (!data) { |
2ece7dd0 | 1042 | BT_COMP_LOGE("relay data calloc: %s", strerror(errno)); |
7cdc2bab MD |
1043 | goto error; |
1044 | } | |
4c66436f | 1045 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1046 | if (ret_len == 0) { |
2ece7dd0 | 1047 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1048 | goto error_free_data; |
1049 | } | |
1cb3cdd7 | 1050 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1051 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1052 | goto error_free_data; |
1053 | } | |
f6ccaed9 | 1054 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1055 | |
1056 | do { | |
1057 | ret_len = fwrite(data, 1, len, fp); | |
1058 | } while (ret_len < 0 && errno == EINTR); | |
1059 | if (ret_len < 0) { | |
2ece7dd0 | 1060 | BT_COMP_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1061 | goto error_free_data; |
1062 | } | |
f6ccaed9 | 1063 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1064 | free(data); |
1065 | ret = len; | |
1066 | end: | |
1067 | return ret; | |
1068 | ||
1069 | error_free_data: | |
1070 | free(data); | |
1071 | error: | |
1072 | return -1; | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1077 | */ | |
1078 | static | |
1079 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1080 | struct packet_index *pindex) | |
1081 | { | |
f6ccaed9 PP |
1082 | BT_ASSERT(lindex); |
1083 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1084 | |
1085 | pindex->offset = be64toh(lindex->offset); | |
1086 | pindex->packet_size = be64toh(lindex->packet_size); | |
1087 | pindex->content_size = be64toh(lindex->content_size); | |
1088 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1089 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1090 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1091 | } | |
1092 | ||
1093 | BT_HIDDEN | |
14f28187 FD |
1094 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1095 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1096 | struct lttng_live_stream_iterator *stream, |
1097 | struct packet_index *index) | |
1098 | { | |
1099 | struct lttng_viewer_cmd cmd; | |
1100 | struct lttng_viewer_get_next_index rq; | |
7cdc2bab | 1101 | struct lttng_viewer_index rp; |
0f1979c3 | 1102 | enum lttng_live_iterator_status retstatus = LTTNG_LIVE_ITERATOR_STATUS_OK; |
14f28187 FD |
1103 | struct live_viewer_connection *viewer_connection = |
1104 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1105 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1106 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1107 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1108 | uint32_t flags, status; |
1109 | ssize_t ret_len; | |
7cdc2bab MD |
1110 | |
1111 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1112 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1113 | cmd.cmd_version = htobe32(0); | |
1114 | ||
bdcbd52e | 1115 | |
7cdc2bab MD |
1116 | memset(&rq, 0, sizeof(rq)); |
1117 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1118 | ||
bdcbd52e JR |
1119 | /* |
1120 | * Merge the cmd and connection request to prevent a write-write | |
1121 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1122 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1123 | */ | |
1124 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1125 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1126 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1127 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1128 | BT_COMP_LOGE("Error sending get_next_index request: %s", |
14f28187 | 1129 | bt_socket_errormsg()); |
7cdc2bab MD |
1130 | goto error; |
1131 | } | |
7cdc2bab | 1132 | |
f6ccaed9 | 1133 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1134 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1135 | if (ret_len == 0) { |
2ece7dd0 | 1136 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1137 | goto error; |
1138 | } | |
1cb3cdd7 | 1139 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1140 | BT_COMP_LOGE("Error receiving get_next_index response: %s", |
14f28187 | 1141 | bt_socket_errormsg()); |
7cdc2bab MD |
1142 | goto error; |
1143 | } | |
f6ccaed9 | 1144 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1145 | |
1146 | flags = be32toh(rp.flags); | |
1147 | status = be32toh(rp.status); | |
1148 | ||
1149 | switch (status) { | |
1150 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1151 | { | |
1152 | uint64_t ctf_stream_class_id; | |
1153 | ||
2ece7dd0 | 1154 | BT_COMP_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1155 | memset(index, 0, sizeof(struct packet_index)); |
1156 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
14f28187 | 1157 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1158 | ctf_stream_class_id = be64toh(rp.stream_id); |
1159 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1160 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1161 | ctf_stream_class_id); |
1162 | } else { | |
1163 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1164 | } | |
1165 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1166 | break; | |
1167 | } | |
1168 | case LTTNG_VIEWER_INDEX_OK: | |
1169 | { | |
1170 | uint64_t ctf_stream_class_id; | |
1171 | ||
2ece7dd0 | 1172 | BT_COMP_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1173 | lttng_index_to_packet_index(&rp, index); |
1174 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1175 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1176 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1177 | ctf_stream_class_id); |
1178 | } else { | |
1179 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1180 | } | |
1181 | ||
1182 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1183 | |
1184 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1185 | BT_COMP_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1186 | trace->new_metadata_needed = true; |
1187 | } | |
1188 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1189 | BT_COMP_LOGD("get_next_index: new streams needed"); |
14f28187 | 1190 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1191 | } |
1192 | break; | |
1193 | } | |
1194 | case LTTNG_VIEWER_INDEX_RETRY: | |
2ece7dd0 | 1195 | BT_COMP_LOGD("get_next_index: retry"); |
7cdc2bab | 1196 | memset(index, 0, sizeof(struct packet_index)); |
14f28187 | 1197 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1198 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1199 | goto end; | |
1200 | case LTTNG_VIEWER_INDEX_HUP: | |
2ece7dd0 | 1201 | BT_COMP_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1202 | memset(index, 0, sizeof(struct packet_index)); |
1203 | index->offset = EOF; | |
14f28187 | 1204 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab | 1205 | stream->state = LTTNG_LIVE_STREAM_EOF; |
4a39caef | 1206 | stream->has_stream_hung_up = true; |
7cdc2bab MD |
1207 | break; |
1208 | case LTTNG_VIEWER_INDEX_ERR: | |
2ece7dd0 | 1209 | BT_COMP_LOGE("get_next_index: error"); |
7cdc2bab MD |
1210 | memset(index, 0, sizeof(struct packet_index)); |
1211 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1212 | goto error; | |
1213 | default: | |
2ece7dd0 | 1214 | BT_COMP_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1215 | memset(index, 0, sizeof(struct packet_index)); |
1216 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1217 | goto error; | |
1218 | } | |
1219 | end: | |
1220 | return retstatus; | |
1221 | ||
1222 | error: | |
9b4f9b42 | 1223 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1224 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1225 | } else { |
14f28187 | 1226 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1227 | } |
7cdc2bab MD |
1228 | return retstatus; |
1229 | } | |
1230 | ||
1231 | BT_HIDDEN | |
14f28187 FD |
1232 | enum bt_msg_iter_medium_status lttng_live_get_stream_bytes( |
1233 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1234 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1235 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1236 | { |
d6e69534 | 1237 | enum bt_msg_iter_medium_status retstatus = BT_MSG_ITER_MEDIUM_STATUS_OK; |
0f1979c3 | 1238 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1239 | struct lttng_viewer_cmd cmd; |
1240 | struct lttng_viewer_get_packet rq; | |
14f28187 FD |
1241 | struct live_viewer_connection *viewer_connection = |
1242 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1243 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1244 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1245 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1246 | uint32_t flags, status; |
1247 | ssize_t ret_len; | |
7cdc2bab | 1248 | |
2ece7dd0 | 1249 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1250 | offset, req_len); |
1251 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1252 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1253 | cmd.cmd_version = htobe32(0); | |
1254 | ||
1255 | memset(&rq, 0, sizeof(rq)); | |
1256 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1257 | rq.offset = htobe64(offset); | |
1258 | rq.len = htobe32(req_len); | |
1259 | ||
bdcbd52e JR |
1260 | /* |
1261 | * Merge the cmd and connection request to prevent a write-write | |
1262 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1263 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1264 | */ | |
1265 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1266 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1267 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1268 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1269 | BT_COMP_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1270 | goto error; |
1271 | } | |
7cdc2bab | 1272 | |
f6ccaed9 | 1273 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1274 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1275 | if (ret_len == 0) { |
2ece7dd0 | 1276 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1277 | goto error; |
1278 | } | |
1cb3cdd7 | 1279 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1280 | BT_COMP_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1281 | goto error; |
1282 | } | |
1283 | if (ret_len != sizeof(rp)) { | |
2ece7dd0 | 1284 | BT_COMP_LOGE("get_data_packet: expected %zu" |
087bc060 | 1285 | ", received %zd", sizeof(rp), |
7cdc2bab MD |
1286 | ret_len); |
1287 | goto error; | |
1288 | } | |
1289 | ||
1290 | flags = be32toh(rp.flags); | |
1291 | status = be32toh(rp.status); | |
1292 | ||
1293 | switch (status) { | |
1294 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1295 | req_len = be32toh(rp.len); | |
2ece7dd0 | 1296 | BT_COMP_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1297 | break; |
1298 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1299 | /* Unimplemented by relay daemon */ | |
2ece7dd0 | 1300 | BT_COMP_LOGD("get_data_packet: retry"); |
d6e69534 | 1301 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1302 | goto end; |
1303 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1304 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1305 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1306 | trace->new_metadata_needed = true; |
1307 | } | |
1308 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1309 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
14f28187 | 1310 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1311 | } |
1312 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1313 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
d6e69534 | 1314 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1315 | goto end; |
1316 | } | |
2ece7dd0 | 1317 | BT_COMP_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1318 | goto error; |
1319 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
d6e69534 | 1320 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1321 | goto end; |
1322 | default: | |
2ece7dd0 | 1323 | BT_COMP_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1324 | goto error; |
1325 | } | |
1326 | ||
1327 | if (req_len == 0) { | |
1328 | goto error; | |
1329 | } | |
1330 | ||
4c66436f | 1331 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1332 | if (ret_len == 0) { |
2ece7dd0 | 1333 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1334 | goto error; |
1335 | } | |
1cb3cdd7 | 1336 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1337 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1338 | goto error; |
1339 | } | |
f6ccaed9 | 1340 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1341 | *recv_len = ret_len; |
1342 | end: | |
1343 | return retstatus; | |
1344 | ||
1345 | error: | |
9b4f9b42 | 1346 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
d6e69534 | 1347 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1348 | } else { |
d6e69534 | 1349 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1350 | } |
7cdc2bab MD |
1351 | return retstatus; |
1352 | } | |
1353 | ||
1354 | /* | |
1355 | * Request new streams for a session. | |
1356 | */ | |
1357 | BT_HIDDEN | |
14f28187 | 1358 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1359 | struct lttng_live_session *session) |
1360 | { | |
14f28187 FD |
1361 | enum lttng_live_iterator_status status = |
1362 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1363 | struct lttng_viewer_cmd cmd; |
1364 | struct lttng_viewer_new_streams_request rq; | |
1365 | struct lttng_viewer_new_streams_response rp; | |
14f28187 FD |
1366 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1367 | session->lttng_live_msg_iter; | |
1368 | struct live_viewer_connection *viewer_connection = | |
1369 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1370 | uint32_t streams_count; |
bdcbd52e JR |
1371 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1372 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 1373 | ssize_t ret_len; |
7cdc2bab MD |
1374 | |
1375 | if (!session->new_streams_needed) { | |
14f28187 | 1376 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1377 | } |
1378 | ||
1379 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1380 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1381 | cmd.cmd_version = htobe32(0); | |
1382 | ||
1383 | memset(&rq, 0, sizeof(rq)); | |
1384 | rq.session_id = htobe64(session->id); | |
1385 | ||
bdcbd52e JR |
1386 | /* |
1387 | * Merge the cmd and connection request to prevent a write-write | |
1388 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1389 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1390 | */ | |
1391 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1392 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1393 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1394 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1395 | BT_COMP_LOGE("Error sending get_new_streams request: %s", |
14f28187 | 1396 | bt_socket_errormsg()); |
7cdc2bab MD |
1397 | goto error; |
1398 | } | |
7cdc2bab | 1399 | |
f6ccaed9 | 1400 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1401 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1402 | if (ret_len == 0) { |
2ece7dd0 | 1403 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1404 | goto error; |
1405 | } | |
1cb3cdd7 | 1406 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1407 | BT_COMP_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1408 | goto error; |
1409 | } | |
f6ccaed9 | 1410 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1411 | |
1412 | streams_count = be32toh(rp.streams_count); | |
1413 | ||
1414 | switch(be32toh(rp.status)) { | |
1415 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1416 | session->new_streams_needed = false; | |
1417 | break; | |
1418 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1419 | session->new_streams_needed = false; | |
1420 | goto end; | |
1421 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1422 | session->new_streams_needed = false; | |
1423 | session->closed = true; | |
14f28187 | 1424 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1425 | goto end; |
1426 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
2ece7dd0 | 1427 | BT_COMP_LOGE("get_new_streams error"); |
7cdc2bab MD |
1428 | goto error; |
1429 | default: | |
2ece7dd0 | 1430 | BT_COMP_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1431 | goto error; |
1432 | } | |
1433 | ||
1434 | if (receive_streams(session, streams_count)) { | |
1435 | goto error; | |
1436 | } | |
1437 | end: | |
1438 | return status; | |
1439 | ||
1440 | error: | |
9b4f9b42 | 1441 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1442 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1443 | } else { |
14f28187 | 1444 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1445 | } |
7cdc2bab MD |
1446 | return status; |
1447 | } | |
1448 | ||
1449 | BT_HIDDEN | |
14f28187 FD |
1450 | struct live_viewer_connection *live_viewer_connection_create( |
1451 | const char *url, bool in_query, | |
550004b4 PP |
1452 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1453 | bt_logging_level log_level) | |
7cdc2bab | 1454 | { |
14f28187 | 1455 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1456 | |
14f28187 | 1457 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1458 | |
550004b4 | 1459 | if (bt_socket_init(log_level) != 0) { |
1cb3cdd7 MJ |
1460 | goto error; |
1461 | } | |
1462 | ||
550004b4 PP |
1463 | viewer_connection->log_level = log_level; |
1464 | ||
1465 | if (lttng_live_msg_iter) { | |
1466 | viewer_connection->self_comp = lttng_live_msg_iter->self_comp; | |
1467 | } | |
1468 | ||
14f28187 | 1469 | bt_object_init_shared(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1470 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1471 | viewer_connection->port = -1; |
14f28187 FD |
1472 | viewer_connection->in_query = in_query; |
1473 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1474 | viewer_connection->url = g_string_new(url); |
1475 | if (!viewer_connection->url) { | |
1476 | goto error; | |
1477 | } | |
1478 | ||
2ece7dd0 | 1479 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1480 | if (lttng_live_connect_viewer(viewer_connection)) { |
1481 | goto error_report; | |
1482 | } | |
2ece7dd0 | 1483 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1484 | return viewer_connection; |
1485 | ||
1486 | error_report: | |
2ece7dd0 | 1487 | BT_COMP_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab | 1488 | error: |
2f767475 PP |
1489 | if (viewer_connection) { |
1490 | live_viewer_connection_destroy(viewer_connection); | |
1491 | } | |
1492 | ||
7cdc2bab MD |
1493 | return NULL; |
1494 | } | |
1495 | ||
1496 | BT_HIDDEN | |
14f28187 FD |
1497 | void live_viewer_connection_destroy( |
1498 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1499 | { |
2ece7dd0 | 1500 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab | 1501 | lttng_live_disconnect_viewer(viewer_connection); |
2f767475 PP |
1502 | if (viewer_connection->url) { |
1503 | g_string_free(viewer_connection->url, true); | |
1504 | } | |
94b828f3 | 1505 | if (viewer_connection->relay_hostname) { |
14f28187 | 1506 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 MD |
1507 | } |
1508 | if (viewer_connection->target_hostname) { | |
14f28187 | 1509 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 MD |
1510 | } |
1511 | if (viewer_connection->session_name) { | |
14f28187 | 1512 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1513 | } |
7cdc2bab | 1514 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1515 | |
1516 | bt_socket_fini(); | |
7cdc2bab | 1517 | } |