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 | { |
0f1979c3 | 307 | int i, len, ret = 0; |
b19ff26f PP |
308 | bt_value *map = NULL; |
309 | bt_value *hostname = NULL; | |
310 | bt_value *session_name = NULL; | |
311 | bt_value *btval = NULL; | |
7cdc2bab MD |
312 | bool found = false; |
313 | ||
393729a6 | 314 | len = bt_value_array_get_length(results); |
7cdc2bab | 315 | if (len < 0) { |
2ece7dd0 | 316 | BT_COMP_LOGE_STR("Error getting size of array."); |
14f28187 | 317 | ret = -1; |
7cdc2bab MD |
318 | goto end; |
319 | } | |
320 | for (i = 0; i < len; i++) { | |
321 | const char *hostname_str = NULL; | |
322 | const char *session_name_str = NULL; | |
323 | ||
14f28187 | 324 | map = bt_value_array_borrow_element_by_index(results, (size_t) i); |
7cdc2bab | 325 | if (!map) { |
2ece7dd0 | 326 | BT_COMP_LOGE_STR("Error borrowing map."); |
14f28187 | 327 | ret = -1; |
7cdc2bab MD |
328 | goto end; |
329 | } | |
14f28187 | 330 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 331 | if (!hostname) { |
2ece7dd0 | 332 | BT_COMP_LOGE_STR("Error borrowing \"target-hostname\" entry."); |
14f28187 | 333 | ret = -1; |
7cdc2bab MD |
334 | goto end; |
335 | } | |
14f28187 | 336 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 337 | if (!session_name) { |
2ece7dd0 | 338 | BT_COMP_LOGE_STR("Error borrowing \"session-name\" entry."); |
14f28187 | 339 | ret = -1; |
7cdc2bab MD |
340 | goto end; |
341 | } | |
601b0d3c PP |
342 | hostname_str = bt_value_string_get(hostname); |
343 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 344 | |
2242b43d PP |
345 | if (strcmp(session->hostname, hostname_str) == 0 |
346 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
347 | int64_t val; |
348 | uint32_t streams = be32toh(session->streams); | |
349 | uint32_t clients = be32toh(session->clients); | |
350 | ||
351 | found = true; | |
352 | ||
14f28187 | 353 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 354 | if (!btval) { |
2ece7dd0 | 355 | BT_COMP_LOGE_STR("Error borrowing \"stream-count\" entry."); |
14f28187 | 356 | ret = -1; |
7cdc2bab MD |
357 | goto end; |
358 | } | |
a91cb83e | 359 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
360 | /* sum */ |
361 | val += streams; | |
a91cb83e | 362 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 363 | |
14f28187 | 364 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 365 | if (!btval) { |
2ece7dd0 | 366 | BT_COMP_LOGE_STR("Error borrowing \"client-count\" entry."); |
14f28187 | 367 | ret = -1; |
7cdc2bab MD |
368 | goto end; |
369 | } | |
a91cb83e | 370 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 371 | /* max */ |
91d81473 | 372 | val = bt_max_t(int64_t, clients, val); |
a91cb83e | 373 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
374 | } |
375 | ||
7cdc2bab MD |
376 | if (found) { |
377 | break; | |
378 | } | |
379 | } | |
380 | end: | |
7cdc2bab MD |
381 | *_found = found; |
382 | return ret; | |
383 | } | |
384 | ||
385 | static | |
14f28187 | 386 | int list_append_session(bt_value *results, |
7cdc2bab | 387 | GString *base_url, |
c01594de PP |
388 | const struct lttng_viewer_session *session, |
389 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 390 | { |
14f28187 | 391 | int ret = 0; |
d24d5663 PP |
392 | bt_value_map_insert_entry_status insert_status; |
393 | bt_value_array_append_element_status append_status; | |
b19ff26f | 394 | bt_value *map = NULL; |
7cdc2bab MD |
395 | GString *url = NULL; |
396 | bool found = false; | |
397 | ||
398 | /* | |
399 | * If the session already exists, add the stream count to it, | |
400 | * and do max of client counts. | |
401 | */ | |
c01594de | 402 | ret = list_update_session(results, session, &found, viewer_connection); |
14f28187 | 403 | if (ret || found) { |
7cdc2bab MD |
404 | goto end; |
405 | } | |
406 | ||
14f28187 | 407 | map = bt_value_map_create(); |
7cdc2bab | 408 | if (!map) { |
2ece7dd0 | 409 | BT_COMP_LOGE_STR("Error creating map value."); |
14f28187 | 410 | ret = -1; |
7cdc2bab MD |
411 | goto end; |
412 | } | |
413 | ||
414 | if (base_url->len < 1) { | |
2ece7dd0 | 415 | BT_COMP_LOGE_STR("Error: base_url length smaller than 1."); |
14f28187 | 416 | ret = -1; |
7cdc2bab MD |
417 | goto end; |
418 | } | |
419 | /* | |
420 | * key = "url", | |
421 | * value = <string>, | |
422 | */ | |
423 | url = g_string_new(base_url->str); | |
424 | g_string_append(url, "/host/"); | |
425 | g_string_append(url, session->hostname); | |
426 | g_string_append_c(url, '/'); | |
427 | g_string_append(url, session->session_name); | |
428 | ||
d24d5663 PP |
429 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
430 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
2ece7dd0 | 431 | BT_COMP_LOGE_STR("Error inserting \"url\" entry."); |
14f28187 | 432 | ret = -1; |
7cdc2bab MD |
433 | goto end; |
434 | } | |
435 | ||
436 | /* | |
437 | * key = "target-hostname", | |
438 | * value = <string>, | |
439 | */ | |
d24d5663 | 440 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 441 | session->hostname); |
d24d5663 | 442 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 443 | BT_COMP_LOGE_STR("Error inserting \"target-hostname\" entry."); |
14f28187 | 444 | ret = -1; |
7cdc2bab MD |
445 | goto end; |
446 | } | |
447 | ||
448 | /* | |
449 | * key = "session-name", | |
450 | * value = <string>, | |
451 | */ | |
d24d5663 | 452 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 453 | session->session_name); |
d24d5663 | 454 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 455 | BT_COMP_LOGE_STR("Error inserting \"session-name\" entry."); |
14f28187 | 456 | ret = -1; |
7cdc2bab MD |
457 | goto end; |
458 | } | |
459 | ||
460 | /* | |
461 | * key = "timer-us", | |
462 | * value = <integer>, | |
463 | */ | |
464 | { | |
465 | uint32_t live_timer = be32toh(session->live_timer); | |
466 | ||
a91cb83e | 467 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
fdd3a2da | 468 | map, "timer-us", live_timer); |
d24d5663 | 469 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 470 | BT_COMP_LOGE_STR("Error inserting \"timer-us\" entry."); |
14f28187 | 471 | ret = -1; |
7cdc2bab MD |
472 | goto end; |
473 | } | |
474 | } | |
475 | ||
476 | /* | |
477 | * key = "stream-count", | |
478 | * value = <integer>, | |
479 | */ | |
480 | { | |
481 | uint32_t streams = be32toh(session->streams); | |
482 | ||
a91cb83e | 483 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 484 | "stream-count", streams); |
d24d5663 | 485 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 486 | BT_COMP_LOGE_STR("Error inserting \"stream-count\" entry."); |
14f28187 | 487 | ret = -1; |
7cdc2bab MD |
488 | goto end; |
489 | } | |
490 | } | |
491 | ||
7cdc2bab MD |
492 | /* |
493 | * key = "client-count", | |
494 | * value = <integer>, | |
495 | */ | |
496 | { | |
497 | uint32_t clients = be32toh(session->clients); | |
498 | ||
a91cb83e | 499 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 500 | "client-count", clients); |
d24d5663 | 501 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 502 | BT_COMP_LOGE_STR("Error inserting \"client-count\" entry."); |
14f28187 | 503 | ret = -1; |
7cdc2bab MD |
504 | goto end; |
505 | } | |
506 | } | |
507 | ||
d24d5663 PP |
508 | append_status = bt_value_array_append_element(results, map); |
509 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
2ece7dd0 | 510 | BT_COMP_LOGE_STR("Error appending map to results."); |
14f28187 FD |
511 | ret = -1; |
512 | } | |
513 | ||
7cdc2bab MD |
514 | end: |
515 | if (url) { | |
14f28187 | 516 | g_string_free(url, true); |
7cdc2bab | 517 | } |
c5b9b441 | 518 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
519 | return ret; |
520 | } | |
521 | ||
522 | /* | |
523 | * Data structure returned: | |
524 | * | |
525 | * { | |
526 | * <array> = { | |
527 | * [n] = { | |
528 | * <map> = { | |
529 | * { | |
530 | * key = "url", | |
531 | * value = <string>, | |
532 | * }, | |
533 | * { | |
534 | * key = "target-hostname", | |
535 | * value = <string>, | |
536 | * }, | |
537 | * { | |
538 | * key = "session-name", | |
539 | * value = <string>, | |
540 | * }, | |
541 | * { | |
542 | * key = "timer-us", | |
543 | * value = <integer>, | |
544 | * }, | |
545 | * { | |
546 | * key = "stream-count", | |
547 | * value = <integer>, | |
548 | * }, | |
549 | * { | |
550 | * key = "client-count", | |
551 | * value = <integer>, | |
552 | * }, | |
553 | * }, | |
554 | * } | |
555 | * } | |
556 | */ | |
557 | ||
558 | BT_HIDDEN | |
d24d5663 | 559 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
14f28187 FD |
560 | struct live_viewer_connection *viewer_connection, |
561 | const bt_value **user_result) | |
7cdc2bab | 562 | { |
d24d5663 PP |
563 | bt_component_class_query_method_status status = |
564 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
14f28187 | 565 | bt_value *result = NULL; |
7cdc2bab MD |
566 | struct lttng_viewer_cmd cmd; |
567 | struct lttng_viewer_list_sessions list; | |
568 | uint32_t i, sessions_count; | |
569 | ssize_t ret_len; | |
570 | ||
14f28187 FD |
571 | result = bt_value_array_create(); |
572 | if (!result) { | |
2ece7dd0 | 573 | BT_COMP_LOGE("Error creating array"); |
d24d5663 | 574 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
575 | goto error; |
576 | } | |
577 | ||
578 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
579 | cmd.data_size = htobe64((uint64_t) 0); | |
580 | cmd.cmd_version = htobe32(0); | |
581 | ||
4c66436f | 582 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 583 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 584 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
d24d5663 | 585 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
586 | goto error; |
587 | } | |
f6ccaed9 | 588 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 589 | |
4c66436f | 590 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 591 | if (ret_len == 0) { |
2ece7dd0 | 592 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 593 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
594 | goto error; |
595 | } | |
1cb3cdd7 | 596 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 597 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
d24d5663 | 598 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
599 | goto error; |
600 | } | |
f6ccaed9 | 601 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
602 | |
603 | sessions_count = be32toh(list.sessions_count); | |
604 | for (i = 0; i < sessions_count; i++) { | |
605 | struct lttng_viewer_session lsession; | |
606 | ||
14f28187 FD |
607 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
608 | sizeof(lsession)); | |
7cdc2bab | 609 | if (ret_len == 0) { |
2ece7dd0 | 610 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 611 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
612 | goto error; |
613 | } | |
1cb3cdd7 | 614 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 615 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
d24d5663 | 616 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
617 | goto error; |
618 | } | |
f6ccaed9 | 619 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
620 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
621 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
14f28187 | 622 | if (list_append_session(result, viewer_connection->url, |
c01594de | 623 | &lsession, viewer_connection)) { |
d24d5663 | 624 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
625 | goto error; |
626 | } | |
627 | } | |
14f28187 FD |
628 | |
629 | *user_result = result; | |
7cdc2bab MD |
630 | goto end; |
631 | error: | |
14f28187 | 632 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 633 | end: |
14f28187 | 634 | return status; |
7cdc2bab MD |
635 | } |
636 | ||
637 | static | |
14f28187 | 638 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
639 | { |
640 | struct lttng_viewer_cmd cmd; | |
641 | struct lttng_viewer_list_sessions list; | |
642 | struct lttng_viewer_session lsession; | |
643 | uint32_t i, sessions_count; | |
644 | ssize_t ret_len; | |
645 | uint64_t session_id; | |
14f28187 FD |
646 | struct live_viewer_connection *viewer_connection = |
647 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
648 | |
649 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
650 | cmd.data_size = htobe64((uint64_t) 0); | |
651 | cmd.cmd_version = htobe32(0); | |
652 | ||
4c66436f | 653 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 654 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 655 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
656 | goto error; |
657 | } | |
f6ccaed9 | 658 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 659 | |
4c66436f | 660 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 661 | if (ret_len == 0) { |
2ece7dd0 | 662 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
663 | goto error; |
664 | } | |
1cb3cdd7 | 665 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 666 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
7cdc2bab MD |
667 | goto error; |
668 | } | |
f6ccaed9 | 669 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
670 | |
671 | sessions_count = be32toh(list.sessions_count); | |
672 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 673 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
674 | &lsession, sizeof(lsession)); |
675 | if (ret_len == 0) { | |
2ece7dd0 | 676 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
677 | goto error; |
678 | } | |
1cb3cdd7 | 679 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 680 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
7cdc2bab MD |
681 | goto error; |
682 | } | |
f6ccaed9 | 683 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
684 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
685 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
686 | session_id = be64toh(lsession.id); | |
687 | ||
2ece7dd0 | 688 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
689 | session_id, lsession.hostname, lsession.session_name); |
690 | ||
7cdc2bab | 691 | if ((strncmp(lsession.session_name, |
94b828f3 | 692 | viewer_connection->session_name->str, |
1cb3cdd7 | 693 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 694 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 695 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
14f28187 | 696 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
697 | lsession.hostname, |
698 | lsession.session_name)) { | |
7cdc2bab MD |
699 | goto error; |
700 | } | |
701 | } | |
702 | } | |
703 | ||
704 | return 0; | |
705 | ||
706 | error: | |
2ece7dd0 | 707 | BT_COMP_LOGE("Unable to query session ids"); |
7cdc2bab MD |
708 | return -1; |
709 | } | |
710 | ||
711 | BT_HIDDEN | |
14f28187 FD |
712 | int lttng_live_create_viewer_session( |
713 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
714 | { |
715 | struct lttng_viewer_cmd cmd; | |
716 | struct lttng_viewer_create_session_response resp; | |
717 | ssize_t ret_len; | |
14f28187 FD |
718 | struct live_viewer_connection *viewer_connection = |
719 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
720 | |
721 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
722 | cmd.data_size = htobe64((uint64_t) 0); | |
723 | cmd.cmd_version = htobe32(0); | |
724 | ||
4c66436f | 725 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 726 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 727 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
728 | goto error; |
729 | } | |
f6ccaed9 | 730 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 731 | |
4c66436f | 732 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 733 | if (ret_len == 0) { |
2ece7dd0 | 734 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
735 | goto error; |
736 | } | |
1cb3cdd7 | 737 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 738 | BT_COMP_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); |
7cdc2bab MD |
739 | goto error; |
740 | } | |
f6ccaed9 | 741 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
742 | |
743 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
2ece7dd0 | 744 | BT_COMP_LOGE("Error creating viewer session"); |
7cdc2bab MD |
745 | goto error; |
746 | } | |
14f28187 | 747 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
7cdc2bab MD |
748 | goto error; |
749 | } | |
750 | ||
751 | return 0; | |
752 | ||
753 | error: | |
754 | return -1; | |
755 | } | |
756 | ||
757 | static | |
758 | int receive_streams(struct lttng_live_session *session, | |
759 | uint32_t stream_count) | |
760 | { | |
761 | ssize_t ret_len; | |
762 | uint32_t i; | |
14f28187 | 763 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0f1979c3 | 764 | session->lttng_live_msg_iter; |
14f28187 | 765 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 766 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 767 | |
2ece7dd0 | 768 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
769 | for (i = 0; i < stream_count; i++) { |
770 | struct lttng_viewer_stream stream; | |
771 | struct lttng_live_stream_iterator *live_stream; | |
772 | uint64_t stream_id; | |
773 | uint64_t ctf_trace_id; | |
774 | ||
4c66436f | 775 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 776 | if (ret_len == 0) { |
2ece7dd0 | 777 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
778 | goto error; |
779 | } | |
1cb3cdd7 | 780 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 781 | BT_COMP_LOGE("Error receiving stream"); |
7cdc2bab MD |
782 | goto error; |
783 | } | |
f6ccaed9 | 784 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
785 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
786 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
787 | stream_id = be64toh(stream.id); | |
788 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
789 | ||
790 | if (stream.metadata_flag) { | |
2ece7dd0 | 791 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0f1979c3 | 792 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 793 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
794 | ctf_trace_id, stream_id, |
795 | stream.path_name)) { | |
2ece7dd0 | 796 | BT_COMP_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
797 | |
798 | goto error; | |
799 | } | |
d6e69534 | 800 | session->lazy_stream_msg_init = true; |
7cdc2bab | 801 | } else { |
2ece7dd0 | 802 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0f1979c3 | 803 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab MD |
804 | live_stream = lttng_live_stream_iterator_create(session, |
805 | ctf_trace_id, stream_id); | |
806 | if (!live_stream) { | |
2ece7dd0 | 807 | BT_COMP_LOGE("Error creating streamn"); |
7cdc2bab MD |
808 | goto error; |
809 | } | |
810 | } | |
811 | } | |
812 | return 0; | |
813 | ||
814 | error: | |
815 | return -1; | |
816 | } | |
817 | ||
818 | BT_HIDDEN | |
819 | int lttng_live_attach_session(struct lttng_live_session *session) | |
820 | { | |
821 | struct lttng_viewer_cmd cmd; | |
822 | struct lttng_viewer_attach_session_request rq; | |
823 | struct lttng_viewer_attach_session_response rp; | |
0f1979c3 FD |
824 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
825 | session->lttng_live_msg_iter; | |
14f28187 | 826 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 827 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab MD |
828 | uint64_t session_id = session->id; |
829 | uint32_t streams_count; | |
bdcbd52e JR |
830 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
831 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 832 | ssize_t ret_len; |
7cdc2bab | 833 | |
7cdc2bab MD |
834 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
835 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
836 | cmd.cmd_version = htobe32(0); | |
837 | ||
838 | memset(&rq, 0, sizeof(rq)); | |
839 | rq.session_id = htobe64(session_id); | |
840 | // TODO: add cmd line parameter to select seek beginning | |
841 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
842 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
843 | ||
bdcbd52e JR |
844 | /* |
845 | * Merge the cmd and connection request to prevent a write-write | |
846 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
847 | * second write to be performed quickly in presence of Nagle's algorithm. | |
848 | */ | |
849 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
850 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 851 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 852 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 853 | BT_COMP_LOGE("Error sending attach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
854 | goto error; |
855 | } | |
7cdc2bab | 856 | |
f6ccaed9 | 857 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 858 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 859 | if (ret_len == 0) { |
2ece7dd0 | 860 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
861 | goto error; |
862 | } | |
1cb3cdd7 | 863 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 864 | BT_COMP_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
865 | goto error; |
866 | } | |
f6ccaed9 | 867 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
868 | |
869 | streams_count = be32toh(rp.streams_count); | |
870 | switch(be32toh(rp.status)) { | |
871 | case LTTNG_VIEWER_ATTACH_OK: | |
872 | break; | |
873 | case LTTNG_VIEWER_ATTACH_UNK: | |
2ece7dd0 | 874 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
875 | goto error; |
876 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
2ece7dd0 | 877 | BT_COMP_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
878 | goto error; |
879 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
2ece7dd0 | 880 | BT_COMP_LOGW("Not a live session"); |
7cdc2bab MD |
881 | goto error; |
882 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
2ece7dd0 | 883 | BT_COMP_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
884 | goto error; |
885 | default: | |
2ece7dd0 | 886 | BT_COMP_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
887 | goto error; |
888 | } | |
889 | ||
890 | /* We receive the initial list of streams. */ | |
891 | if (receive_streams(session, streams_count)) { | |
892 | goto error; | |
893 | } | |
894 | ||
895 | session->attached = true; | |
896 | session->new_streams_needed = false; | |
897 | ||
898 | return 0; | |
899 | ||
900 | error: | |
901 | return -1; | |
902 | } | |
903 | ||
904 | BT_HIDDEN | |
905 | int lttng_live_detach_session(struct lttng_live_session *session) | |
906 | { | |
907 | struct lttng_viewer_cmd cmd; | |
908 | struct lttng_viewer_detach_session_request rq; | |
909 | struct lttng_viewer_detach_session_response rp; | |
910 | ssize_t ret_len; | |
0f1979c3 FD |
911 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
912 | session->lttng_live_msg_iter; | |
14f28187 | 913 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 914 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 915 | uint64_t session_id = session->id; |
bdcbd52e JR |
916 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
917 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
918 | |
919 | if (!session->attached) { | |
920 | return 0; | |
921 | } | |
922 | ||
923 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
924 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
925 | cmd.cmd_version = htobe32(0); | |
926 | ||
927 | memset(&rq, 0, sizeof(rq)); | |
928 | rq.session_id = htobe64(session_id); | |
929 | ||
bdcbd52e JR |
930 | /* |
931 | * Merge the cmd and connection request to prevent a write-write | |
932 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
933 | * second write to be performed quickly in presence of Nagle's algorithm. | |
934 | */ | |
935 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
936 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 937 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 938 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 939 | BT_COMP_LOGE("Error sending detach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
940 | goto error; |
941 | } | |
7cdc2bab | 942 | |
f6ccaed9 | 943 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 944 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 945 | if (ret_len == 0) { |
2ece7dd0 | 946 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
947 | goto error; |
948 | } | |
1cb3cdd7 | 949 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 950 | BT_COMP_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
951 | goto error; |
952 | } | |
f6ccaed9 | 953 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
954 | |
955 | switch(be32toh(rp.status)) { | |
956 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
957 | break; | |
958 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
2ece7dd0 | 959 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
960 | goto error; |
961 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
2ece7dd0 | 962 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
963 | goto error; |
964 | default: | |
2ece7dd0 | 965 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
966 | goto error; |
967 | } | |
968 | ||
969 | session->attached = false; | |
970 | ||
971 | return 0; | |
972 | ||
973 | error: | |
974 | return -1; | |
975 | } | |
976 | ||
977 | BT_HIDDEN | |
978 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
979 | FILE *fp) | |
980 | { | |
981 | uint64_t len = 0; | |
982 | int ret; | |
983 | struct lttng_viewer_cmd cmd; | |
984 | struct lttng_viewer_get_metadata rq; | |
985 | struct lttng_viewer_metadata_packet rp; | |
986 | char *data = NULL; | |
987 | ssize_t ret_len; | |
988 | struct lttng_live_session *session = trace->session; | |
0f1979c3 FD |
989 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
990 | session->lttng_live_msg_iter; | |
7cdc2bab | 991 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 | 992 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 993 | lttng_live_msg_iter->viewer_connection; |
bdcbd52e JR |
994 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
995 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
996 | |
997 | rq.stream_id = htobe64(metadata->stream_id); | |
998 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
999 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1000 | cmd.cmd_version = htobe32(0); | |
1001 | ||
bdcbd52e JR |
1002 | /* |
1003 | * Merge the cmd and connection request to prevent a write-write | |
1004 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1005 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1006 | */ | |
1007 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1008 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1009 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1010 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1011 | BT_COMP_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1012 | goto error; |
1013 | } | |
7cdc2bab | 1014 | |
f6ccaed9 | 1015 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1016 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1017 | if (ret_len == 0) { |
2ece7dd0 | 1018 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1019 | goto error; |
1020 | } | |
1cb3cdd7 | 1021 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1022 | BT_COMP_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1023 | goto error; |
1024 | } | |
f6ccaed9 | 1025 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1026 | |
1027 | switch (be32toh(rp.status)) { | |
1028 | case LTTNG_VIEWER_METADATA_OK: | |
2ece7dd0 | 1029 | BT_COMP_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1030 | break; |
1031 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
2ece7dd0 | 1032 | BT_COMP_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1033 | ret = 0; |
1034 | goto end; | |
1035 | case LTTNG_VIEWER_METADATA_ERR: | |
2ece7dd0 | 1036 | BT_COMP_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1037 | goto error; |
1038 | default: | |
2ece7dd0 | 1039 | BT_COMP_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1040 | goto error; |
1041 | } | |
1042 | ||
1043 | len = be64toh(rp.len); | |
2ece7dd0 | 1044 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1045 | if (len <= 0) { |
1046 | goto error; | |
1047 | } | |
1048 | ||
91d81473 | 1049 | data = calloc(1, len); |
7cdc2bab | 1050 | if (!data) { |
2ece7dd0 | 1051 | BT_COMP_LOGE("relay data calloc: %s", strerror(errno)); |
7cdc2bab MD |
1052 | goto error; |
1053 | } | |
4c66436f | 1054 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1055 | if (ret_len == 0) { |
2ece7dd0 | 1056 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1057 | goto error_free_data; |
1058 | } | |
1cb3cdd7 | 1059 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1060 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1061 | goto error_free_data; |
1062 | } | |
f6ccaed9 | 1063 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1064 | |
1065 | do { | |
1066 | ret_len = fwrite(data, 1, len, fp); | |
1067 | } while (ret_len < 0 && errno == EINTR); | |
1068 | if (ret_len < 0) { | |
2ece7dd0 | 1069 | BT_COMP_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1070 | goto error_free_data; |
1071 | } | |
f6ccaed9 | 1072 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1073 | free(data); |
1074 | ret = len; | |
1075 | end: | |
1076 | return ret; | |
1077 | ||
1078 | error_free_data: | |
1079 | free(data); | |
1080 | error: | |
1081 | return -1; | |
1082 | } | |
1083 | ||
1084 | /* | |
1085 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1086 | */ | |
1087 | static | |
1088 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1089 | struct packet_index *pindex) | |
1090 | { | |
f6ccaed9 PP |
1091 | BT_ASSERT(lindex); |
1092 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1093 | |
1094 | pindex->offset = be64toh(lindex->offset); | |
1095 | pindex->packet_size = be64toh(lindex->packet_size); | |
1096 | pindex->content_size = be64toh(lindex->content_size); | |
1097 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1098 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1099 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1100 | } | |
1101 | ||
1102 | BT_HIDDEN | |
14f28187 FD |
1103 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1104 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1105 | struct lttng_live_stream_iterator *stream, |
1106 | struct packet_index *index) | |
1107 | { | |
1108 | struct lttng_viewer_cmd cmd; | |
1109 | struct lttng_viewer_get_next_index rq; | |
7cdc2bab | 1110 | struct lttng_viewer_index rp; |
0f1979c3 | 1111 | enum lttng_live_iterator_status retstatus = LTTNG_LIVE_ITERATOR_STATUS_OK; |
14f28187 FD |
1112 | struct live_viewer_connection *viewer_connection = |
1113 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1114 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1115 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1116 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1117 | uint32_t flags, status; |
1118 | ssize_t ret_len; | |
7cdc2bab MD |
1119 | |
1120 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1121 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1122 | cmd.cmd_version = htobe32(0); | |
1123 | ||
bdcbd52e | 1124 | |
7cdc2bab MD |
1125 | memset(&rq, 0, sizeof(rq)); |
1126 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1127 | ||
bdcbd52e JR |
1128 | /* |
1129 | * Merge the cmd and connection request to prevent a write-write | |
1130 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1131 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1132 | */ | |
1133 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1134 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1135 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1136 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1137 | BT_COMP_LOGE("Error sending get_next_index request: %s", |
14f28187 | 1138 | bt_socket_errormsg()); |
7cdc2bab MD |
1139 | goto error; |
1140 | } | |
7cdc2bab | 1141 | |
f6ccaed9 | 1142 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1143 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1144 | if (ret_len == 0) { |
2ece7dd0 | 1145 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1146 | goto error; |
1147 | } | |
1cb3cdd7 | 1148 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1149 | BT_COMP_LOGE("Error receiving get_next_index response: %s", |
14f28187 | 1150 | bt_socket_errormsg()); |
7cdc2bab MD |
1151 | goto error; |
1152 | } | |
f6ccaed9 | 1153 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1154 | |
1155 | flags = be32toh(rp.flags); | |
1156 | status = be32toh(rp.status); | |
1157 | ||
1158 | switch (status) { | |
1159 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1160 | { | |
1161 | uint64_t ctf_stream_class_id; | |
1162 | ||
2ece7dd0 | 1163 | BT_COMP_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1164 | memset(index, 0, sizeof(struct packet_index)); |
1165 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
14f28187 | 1166 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1167 | ctf_stream_class_id = be64toh(rp.stream_id); |
1168 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1169 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1170 | ctf_stream_class_id); |
1171 | } else { | |
1172 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1173 | } | |
1174 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1175 | break; | |
1176 | } | |
1177 | case LTTNG_VIEWER_INDEX_OK: | |
1178 | { | |
1179 | uint64_t ctf_stream_class_id; | |
1180 | ||
2ece7dd0 | 1181 | BT_COMP_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1182 | lttng_index_to_packet_index(&rp, index); |
1183 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1184 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1185 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1186 | ctf_stream_class_id); |
1187 | } else { | |
1188 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1189 | } | |
1190 | ||
1191 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1192 | |
1193 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1194 | BT_COMP_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1195 | trace->new_metadata_needed = true; |
1196 | } | |
1197 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1198 | BT_COMP_LOGD("get_next_index: new streams needed"); |
14f28187 | 1199 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1200 | } |
1201 | break; | |
1202 | } | |
1203 | case LTTNG_VIEWER_INDEX_RETRY: | |
2ece7dd0 | 1204 | BT_COMP_LOGD("get_next_index: retry"); |
7cdc2bab | 1205 | memset(index, 0, sizeof(struct packet_index)); |
14f28187 | 1206 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1207 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1208 | goto end; | |
1209 | case LTTNG_VIEWER_INDEX_HUP: | |
2ece7dd0 | 1210 | BT_COMP_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1211 | memset(index, 0, sizeof(struct packet_index)); |
1212 | index->offset = EOF; | |
14f28187 | 1213 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab | 1214 | stream->state = LTTNG_LIVE_STREAM_EOF; |
4a39caef | 1215 | stream->has_stream_hung_up = true; |
7cdc2bab MD |
1216 | break; |
1217 | case LTTNG_VIEWER_INDEX_ERR: | |
2ece7dd0 | 1218 | BT_COMP_LOGE("get_next_index: error"); |
7cdc2bab MD |
1219 | memset(index, 0, sizeof(struct packet_index)); |
1220 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1221 | goto error; | |
1222 | default: | |
2ece7dd0 | 1223 | BT_COMP_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1224 | memset(index, 0, sizeof(struct packet_index)); |
1225 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1226 | goto error; | |
1227 | } | |
1228 | end: | |
1229 | return retstatus; | |
1230 | ||
1231 | error: | |
9b4f9b42 | 1232 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1233 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1234 | } else { |
14f28187 | 1235 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1236 | } |
7cdc2bab MD |
1237 | return retstatus; |
1238 | } | |
1239 | ||
1240 | BT_HIDDEN | |
14f28187 FD |
1241 | enum bt_msg_iter_medium_status lttng_live_get_stream_bytes( |
1242 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1243 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1244 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1245 | { |
d6e69534 | 1246 | enum bt_msg_iter_medium_status retstatus = BT_MSG_ITER_MEDIUM_STATUS_OK; |
0f1979c3 | 1247 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1248 | struct lttng_viewer_cmd cmd; |
1249 | struct lttng_viewer_get_packet rq; | |
14f28187 FD |
1250 | struct live_viewer_connection *viewer_connection = |
1251 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1252 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1253 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1254 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1255 | uint32_t flags, status; |
1256 | ssize_t ret_len; | |
7cdc2bab | 1257 | |
2ece7dd0 | 1258 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1259 | offset, req_len); |
1260 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1261 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1262 | cmd.cmd_version = htobe32(0); | |
1263 | ||
1264 | memset(&rq, 0, sizeof(rq)); | |
1265 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1266 | rq.offset = htobe64(offset); | |
1267 | rq.len = htobe32(req_len); | |
1268 | ||
bdcbd52e JR |
1269 | /* |
1270 | * Merge the cmd and connection request to prevent a write-write | |
1271 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1272 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1273 | */ | |
1274 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1275 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1276 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1277 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1278 | BT_COMP_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1279 | goto error; |
1280 | } | |
7cdc2bab | 1281 | |
f6ccaed9 | 1282 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1283 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1284 | if (ret_len == 0) { |
2ece7dd0 | 1285 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1286 | goto error; |
1287 | } | |
1cb3cdd7 | 1288 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1289 | BT_COMP_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1290 | goto error; |
1291 | } | |
1292 | if (ret_len != sizeof(rp)) { | |
2ece7dd0 | 1293 | BT_COMP_LOGE("get_data_packet: expected %zu" |
087bc060 | 1294 | ", received %zd", sizeof(rp), |
7cdc2bab MD |
1295 | ret_len); |
1296 | goto error; | |
1297 | } | |
1298 | ||
1299 | flags = be32toh(rp.flags); | |
1300 | status = be32toh(rp.status); | |
1301 | ||
1302 | switch (status) { | |
1303 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1304 | req_len = be32toh(rp.len); | |
2ece7dd0 | 1305 | BT_COMP_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1306 | break; |
1307 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1308 | /* Unimplemented by relay daemon */ | |
2ece7dd0 | 1309 | BT_COMP_LOGD("get_data_packet: retry"); |
d6e69534 | 1310 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1311 | goto end; |
1312 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1313 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1314 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1315 | trace->new_metadata_needed = true; |
1316 | } | |
1317 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1318 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
14f28187 | 1319 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1320 | } |
1321 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1322 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
d6e69534 | 1323 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1324 | goto end; |
1325 | } | |
2ece7dd0 | 1326 | BT_COMP_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1327 | goto error; |
1328 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
d6e69534 | 1329 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1330 | goto end; |
1331 | default: | |
2ece7dd0 | 1332 | BT_COMP_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1333 | goto error; |
1334 | } | |
1335 | ||
1336 | if (req_len == 0) { | |
1337 | goto error; | |
1338 | } | |
1339 | ||
4c66436f | 1340 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1341 | if (ret_len == 0) { |
2ece7dd0 | 1342 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1343 | goto error; |
1344 | } | |
1cb3cdd7 | 1345 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1346 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1347 | goto error; |
1348 | } | |
f6ccaed9 | 1349 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1350 | *recv_len = ret_len; |
1351 | end: | |
1352 | return retstatus; | |
1353 | ||
1354 | error: | |
9b4f9b42 | 1355 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
d6e69534 | 1356 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1357 | } else { |
d6e69534 | 1358 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1359 | } |
7cdc2bab MD |
1360 | return retstatus; |
1361 | } | |
1362 | ||
1363 | /* | |
1364 | * Request new streams for a session. | |
1365 | */ | |
1366 | BT_HIDDEN | |
14f28187 | 1367 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1368 | struct lttng_live_session *session) |
1369 | { | |
14f28187 FD |
1370 | enum lttng_live_iterator_status status = |
1371 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1372 | struct lttng_viewer_cmd cmd; |
1373 | struct lttng_viewer_new_streams_request rq; | |
1374 | struct lttng_viewer_new_streams_response rp; | |
14f28187 FD |
1375 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1376 | session->lttng_live_msg_iter; | |
1377 | struct live_viewer_connection *viewer_connection = | |
1378 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1379 | uint32_t streams_count; |
bdcbd52e JR |
1380 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1381 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 1382 | ssize_t ret_len; |
7cdc2bab MD |
1383 | |
1384 | if (!session->new_streams_needed) { | |
14f28187 | 1385 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1386 | } |
1387 | ||
1388 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1389 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1390 | cmd.cmd_version = htobe32(0); | |
1391 | ||
1392 | memset(&rq, 0, sizeof(rq)); | |
1393 | rq.session_id = htobe64(session->id); | |
1394 | ||
bdcbd52e JR |
1395 | /* |
1396 | * Merge the cmd and connection request to prevent a write-write | |
1397 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1398 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1399 | */ | |
1400 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1401 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1402 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1403 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1404 | BT_COMP_LOGE("Error sending get_new_streams request: %s", |
14f28187 | 1405 | bt_socket_errormsg()); |
7cdc2bab MD |
1406 | goto error; |
1407 | } | |
7cdc2bab | 1408 | |
f6ccaed9 | 1409 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1410 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1411 | if (ret_len == 0) { |
2ece7dd0 | 1412 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1413 | goto error; |
1414 | } | |
1cb3cdd7 | 1415 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1416 | BT_COMP_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1417 | goto error; |
1418 | } | |
f6ccaed9 | 1419 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1420 | |
1421 | streams_count = be32toh(rp.streams_count); | |
1422 | ||
1423 | switch(be32toh(rp.status)) { | |
1424 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1425 | session->new_streams_needed = false; | |
1426 | break; | |
1427 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1428 | session->new_streams_needed = false; | |
1429 | goto end; | |
1430 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1431 | session->new_streams_needed = false; | |
1432 | session->closed = true; | |
14f28187 | 1433 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1434 | goto end; |
1435 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
2ece7dd0 | 1436 | BT_COMP_LOGE("get_new_streams error"); |
7cdc2bab MD |
1437 | goto error; |
1438 | default: | |
2ece7dd0 | 1439 | BT_COMP_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1440 | goto error; |
1441 | } | |
1442 | ||
1443 | if (receive_streams(session, streams_count)) { | |
1444 | goto error; | |
1445 | } | |
1446 | end: | |
1447 | return status; | |
1448 | ||
1449 | error: | |
9b4f9b42 | 1450 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1451 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1452 | } else { |
14f28187 | 1453 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1454 | } |
7cdc2bab MD |
1455 | return status; |
1456 | } | |
1457 | ||
1458 | BT_HIDDEN | |
14f28187 FD |
1459 | struct live_viewer_connection *live_viewer_connection_create( |
1460 | const char *url, bool in_query, | |
550004b4 PP |
1461 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1462 | bt_logging_level log_level) | |
7cdc2bab | 1463 | { |
14f28187 | 1464 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1465 | |
14f28187 | 1466 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1467 | |
550004b4 | 1468 | if (bt_socket_init(log_level) != 0) { |
1cb3cdd7 MJ |
1469 | goto error; |
1470 | } | |
1471 | ||
550004b4 PP |
1472 | viewer_connection->log_level = log_level; |
1473 | ||
1474 | if (lttng_live_msg_iter) { | |
1475 | viewer_connection->self_comp = lttng_live_msg_iter->self_comp; | |
1476 | } | |
1477 | ||
14f28187 | 1478 | bt_object_init_shared(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1479 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1480 | viewer_connection->port = -1; |
14f28187 FD |
1481 | viewer_connection->in_query = in_query; |
1482 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1483 | viewer_connection->url = g_string_new(url); |
1484 | if (!viewer_connection->url) { | |
1485 | goto error; | |
1486 | } | |
1487 | ||
2ece7dd0 | 1488 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1489 | if (lttng_live_connect_viewer(viewer_connection)) { |
1490 | goto error_report; | |
1491 | } | |
2ece7dd0 | 1492 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1493 | return viewer_connection; |
1494 | ||
1495 | error_report: | |
2ece7dd0 | 1496 | BT_COMP_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab | 1497 | error: |
2f767475 PP |
1498 | if (viewer_connection) { |
1499 | live_viewer_connection_destroy(viewer_connection); | |
1500 | } | |
1501 | ||
7cdc2bab MD |
1502 | return NULL; |
1503 | } | |
1504 | ||
1505 | BT_HIDDEN | |
14f28187 FD |
1506 | void live_viewer_connection_destroy( |
1507 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1508 | { |
2ece7dd0 | 1509 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab | 1510 | lttng_live_disconnect_viewer(viewer_connection); |
2f767475 PP |
1511 | if (viewer_connection->url) { |
1512 | g_string_free(viewer_connection->url, true); | |
1513 | } | |
94b828f3 | 1514 | if (viewer_connection->relay_hostname) { |
14f28187 | 1515 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 MD |
1516 | } |
1517 | if (viewer_connection->target_hostname) { | |
14f28187 | 1518 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 MD |
1519 | } |
1520 | if (viewer_connection->session_name) { | |
14f28187 | 1521 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1522 | } |
7cdc2bab | 1523 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1524 | |
1525 | bt_socket_fini(); | |
7cdc2bab | 1526 | } |