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" |
2ece7dd0 | 27 | #include "plugins/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 && |
42521b69 | 70 | lttng_live_graph_is_canceled(lttng_live_msg_iter->lttng_live_comp)) { |
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 && |
42521b69 | 96 | lttng_live_graph_is_canceled(lttng_live_msg_iter->lttng_live_comp)) { |
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 | |
94b828f3 MD |
120 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, |
121 | error_buf, sizeof(error_buf)); | |
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 | |
94b828f3 MD |
127 | viewer_connection->relay_hostname = |
128 | lttng_live_url_parts.hostname; | |
129 | lttng_live_url_parts.hostname = NULL; | |
130 | ||
131 | if (lttng_live_url_parts.port >= 0) { | |
132 | viewer_connection->port = lttng_live_url_parts.port; | |
133 | } else { | |
7cdc2bab MD |
134 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
135 | } | |
136 | ||
94b828f3 MD |
137 | viewer_connection->target_hostname = |
138 | lttng_live_url_parts.target_hostname; | |
139 | lttng_live_url_parts.target_hostname = NULL; | |
140 | ||
141 | if (lttng_live_url_parts.session_name) { | |
142 | viewer_connection->session_name = | |
143 | lttng_live_url_parts.session_name; | |
144 | lttng_live_url_parts.session_name = NULL; | |
7cdc2bab MD |
145 | } |
146 | ||
2ece7dd0 | 147 | BT_COMP_LOGI("Connecting to hostname : %s, port : %d, " |
7cdc2bab | 148 | "target hostname : %s, session name : %s, " |
94b828f3 MD |
149 | "proto : %s", |
150 | viewer_connection->relay_hostname->str, | |
7cdc2bab | 151 | viewer_connection->port, |
94b828f3 MD |
152 | viewer_connection->target_hostname == NULL ? |
153 | "<none>" : viewer_connection->target_hostname->str, | |
154 | viewer_connection->session_name == NULL ? | |
155 | "<none>" : viewer_connection->session_name->str, | |
156 | lttng_live_url_parts.proto->str); | |
7cdc2bab MD |
157 | ret = 0; |
158 | ||
159 | end: | |
94b828f3 | 160 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
161 | return ret; |
162 | } | |
163 | ||
14f28187 FD |
164 | static |
165 | int lttng_live_handshake(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
166 | { |
167 | struct lttng_viewer_cmd cmd; | |
168 | struct lttng_viewer_connect connect; | |
bdcbd52e JR |
169 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
170 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
171 | int ret; |
172 | ssize_t ret_len; | |
173 | ||
174 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
175 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
176 | cmd.cmd_version = htobe32(0); | |
177 | ||
178 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
179 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
180 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
181 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
182 | ||
bdcbd52e JR |
183 | /* |
184 | * Merge the cmd and connection request to prevent a write-write | |
185 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
186 | * second write to be performed quickly in presence of Nagle's algorithm | |
187 | */ | |
188 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
189 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
bdcbd52e | 190 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 191 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 192 | BT_COMP_LOGE("Error sending version: %s", bt_socket_errormsg()); |
7cdc2bab MD |
193 | goto error; |
194 | } | |
f6ccaed9 PP |
195 | |
196 | BT_ASSERT(ret_len == cmd_buf_len); | |
7cdc2bab | 197 | |
4c66436f | 198 | ret_len = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 199 | if (ret_len == 0) { |
2ece7dd0 | 200 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
201 | goto error; |
202 | } | |
1cb3cdd7 | 203 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 204 | BT_COMP_LOGE("Error receiving version: %s", bt_socket_errormsg()); |
7cdc2bab MD |
205 | goto error; |
206 | } | |
f6ccaed9 | 207 | BT_ASSERT(ret_len == sizeof(connect)); |
7cdc2bab | 208 | |
2ece7dd0 | 209 | BT_COMP_LOGI("Received viewer session ID : %" PRIu64, |
83c78c35 | 210 | (uint64_t) be64toh(connect.viewer_session_id)); |
2ece7dd0 | 211 | BT_COMP_LOGI("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
212 | be32toh(connect.minor)); |
213 | ||
214 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
2ece7dd0 | 215 | BT_COMP_LOGE("Incompatible lttng-relayd protocol"); |
7cdc2bab MD |
216 | goto error; |
217 | } | |
218 | /* Use the smallest protocol version implemented. */ | |
219 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
220 | viewer_connection->minor = be32toh(connect.minor); | |
221 | } else { | |
222 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
223 | } | |
224 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
225 | ret = 0; | |
226 | return ret; | |
227 | ||
228 | error: | |
2ece7dd0 | 229 | BT_COMP_LOGE("Unable to establish connection"); |
7cdc2bab MD |
230 | return -1; |
231 | } | |
232 | ||
14f28187 FD |
233 | static |
234 | int lttng_live_connect_viewer(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
235 | { |
236 | struct hostent *host; | |
237 | struct sockaddr_in server_addr; | |
238 | int ret; | |
239 | ||
240 | if (parse_url(viewer_connection)) { | |
241 | goto error; | |
242 | } | |
243 | ||
94b828f3 | 244 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 245 | if (!host) { |
2ece7dd0 | 246 | BT_COMP_LOGE("Cannot lookup hostname %s", |
94b828f3 | 247 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
248 | goto error; |
249 | } | |
250 | ||
1cb3cdd7 | 251 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
2ece7dd0 | 252 | BT_COMP_LOGE("Socket creation failed: %s", bt_socket_errormsg()); |
7cdc2bab MD |
253 | goto error; |
254 | } | |
255 | ||
256 | server_addr.sin_family = AF_INET; | |
257 | server_addr.sin_port = htons(viewer_connection->port); | |
258 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
259 | memset(&(server_addr.sin_zero), 0, 8); | |
260 | ||
261 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
1cb3cdd7 | 262 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
2ece7dd0 | 263 | BT_COMP_LOGE("Connection failed: %s", bt_socket_errormsg()); |
7cdc2bab MD |
264 | goto error; |
265 | } | |
266 | if (lttng_live_handshake(viewer_connection)) { | |
267 | goto error; | |
268 | } | |
269 | ||
270 | ret = 0; | |
271 | ||
272 | return ret; | |
273 | ||
274 | error: | |
1cb3cdd7 MJ |
275 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
276 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
2ece7dd0 | 277 | BT_COMP_LOGE("Close: %s", bt_socket_errormsg()); |
7cdc2bab MD |
278 | } |
279 | } | |
1cb3cdd7 | 280 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
281 | return -1; |
282 | } | |
283 | ||
14f28187 FD |
284 | static |
285 | void lttng_live_disconnect_viewer( | |
286 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 287 | { |
1cb3cdd7 | 288 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
289 | return; |
290 | } | |
1cb3cdd7 | 291 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
2ece7dd0 | 292 | BT_COMP_LOGE("Close: %s", bt_socket_errormsg()); |
1cb3cdd7 | 293 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
294 | } |
295 | } | |
296 | ||
14f28187 FD |
297 | static |
298 | void connection_release(bt_object *obj) | |
7cdc2bab | 299 | { |
14f28187 FD |
300 | struct live_viewer_connection *conn = |
301 | container_of(obj, struct live_viewer_connection, obj); | |
7cdc2bab | 302 | |
14f28187 | 303 | live_viewer_connection_destroy(conn); |
7cdc2bab MD |
304 | } |
305 | ||
306 | static | |
14f28187 | 307 | int list_update_session(bt_value *results, |
7cdc2bab | 308 | const struct lttng_viewer_session *session, |
c01594de | 309 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 310 | { |
14f28187 | 311 | int ret = 0; |
b19ff26f PP |
312 | bt_value *map = NULL; |
313 | bt_value *hostname = NULL; | |
314 | bt_value *session_name = NULL; | |
315 | bt_value *btval = NULL; | |
7cdc2bab MD |
316 | int i, len; |
317 | bool found = false; | |
318 | ||
07208d85 | 319 | len = bt_value_array_get_size(results); |
7cdc2bab | 320 | if (len < 0) { |
2ece7dd0 | 321 | BT_COMP_LOGE_STR("Error getting size of array."); |
14f28187 | 322 | ret = -1; |
7cdc2bab MD |
323 | goto end; |
324 | } | |
325 | for (i = 0; i < len; i++) { | |
326 | const char *hostname_str = NULL; | |
327 | const char *session_name_str = NULL; | |
328 | ||
14f28187 | 329 | map = bt_value_array_borrow_element_by_index(results, (size_t) i); |
7cdc2bab | 330 | if (!map) { |
2ece7dd0 | 331 | BT_COMP_LOGE_STR("Error borrowing map."); |
14f28187 | 332 | ret = -1; |
7cdc2bab MD |
333 | goto end; |
334 | } | |
14f28187 | 335 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 336 | if (!hostname) { |
2ece7dd0 | 337 | BT_COMP_LOGE_STR("Error borrowing \"target-hostname\" entry."); |
14f28187 | 338 | ret = -1; |
7cdc2bab MD |
339 | goto end; |
340 | } | |
14f28187 | 341 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 342 | if (!session_name) { |
2ece7dd0 | 343 | BT_COMP_LOGE_STR("Error borrowing \"session-name\" entry."); |
14f28187 | 344 | ret = -1; |
7cdc2bab MD |
345 | goto end; |
346 | } | |
601b0d3c PP |
347 | hostname_str = bt_value_string_get(hostname); |
348 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab MD |
349 | |
350 | if (!strcmp(session->hostname, hostname_str) | |
351 | && !strcmp(session->session_name, | |
352 | session_name_str)) { | |
353 | int64_t val; | |
354 | uint32_t streams = be32toh(session->streams); | |
355 | uint32_t clients = be32toh(session->clients); | |
356 | ||
357 | found = true; | |
358 | ||
14f28187 | 359 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 360 | if (!btval) { |
2ece7dd0 | 361 | BT_COMP_LOGE_STR("Error borrowing \"stream-count\" entry."); |
14f28187 | 362 | ret = -1; |
7cdc2bab MD |
363 | goto end; |
364 | } | |
fdd3a2da | 365 | val = bt_value_signed_integer_get(btval); |
7cdc2bab MD |
366 | /* sum */ |
367 | val += streams; | |
fdd3a2da | 368 | bt_value_signed_integer_set(btval, val); |
7cdc2bab | 369 | |
14f28187 | 370 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 371 | if (!btval) { |
2ece7dd0 | 372 | BT_COMP_LOGE_STR("Error borrowing \"client-count\" entry."); |
14f28187 | 373 | ret = -1; |
7cdc2bab MD |
374 | goto end; |
375 | } | |
fdd3a2da | 376 | val = bt_value_signed_integer_get(btval); |
7cdc2bab | 377 | /* max */ |
91d81473 | 378 | val = bt_max_t(int64_t, clients, val); |
fdd3a2da | 379 | bt_value_signed_integer_set(btval, val); |
7cdc2bab MD |
380 | } |
381 | ||
7cdc2bab MD |
382 | if (found) { |
383 | break; | |
384 | } | |
385 | } | |
386 | end: | |
7cdc2bab MD |
387 | *_found = found; |
388 | return ret; | |
389 | } | |
390 | ||
391 | static | |
14f28187 | 392 | int list_append_session(bt_value *results, |
7cdc2bab | 393 | GString *base_url, |
c01594de PP |
394 | const struct lttng_viewer_session *session, |
395 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 396 | { |
14f28187 | 397 | int ret = 0; |
d24d5663 PP |
398 | bt_value_map_insert_entry_status insert_status; |
399 | bt_value_array_append_element_status append_status; | |
b19ff26f | 400 | bt_value *map = NULL; |
7cdc2bab MD |
401 | GString *url = NULL; |
402 | bool found = false; | |
403 | ||
404 | /* | |
405 | * If the session already exists, add the stream count to it, | |
406 | * and do max of client counts. | |
407 | */ | |
c01594de | 408 | ret = list_update_session(results, session, &found, viewer_connection); |
14f28187 | 409 | if (ret || found) { |
7cdc2bab MD |
410 | goto end; |
411 | } | |
412 | ||
14f28187 | 413 | map = bt_value_map_create(); |
7cdc2bab | 414 | if (!map) { |
2ece7dd0 | 415 | BT_COMP_LOGE_STR("Error creating map value."); |
14f28187 | 416 | ret = -1; |
7cdc2bab MD |
417 | goto end; |
418 | } | |
419 | ||
420 | if (base_url->len < 1) { | |
2ece7dd0 | 421 | BT_COMP_LOGE_STR("Error: base_url length smaller than 1."); |
14f28187 | 422 | ret = -1; |
7cdc2bab MD |
423 | goto end; |
424 | } | |
425 | /* | |
426 | * key = "url", | |
427 | * value = <string>, | |
428 | */ | |
429 | url = g_string_new(base_url->str); | |
430 | g_string_append(url, "/host/"); | |
431 | g_string_append(url, session->hostname); | |
432 | g_string_append_c(url, '/'); | |
433 | g_string_append(url, session->session_name); | |
434 | ||
d24d5663 PP |
435 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
436 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
2ece7dd0 | 437 | BT_COMP_LOGE_STR("Error inserting \"url\" entry."); |
14f28187 | 438 | ret = -1; |
7cdc2bab MD |
439 | goto end; |
440 | } | |
441 | ||
442 | /* | |
443 | * key = "target-hostname", | |
444 | * value = <string>, | |
445 | */ | |
d24d5663 | 446 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 447 | session->hostname); |
d24d5663 | 448 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 449 | BT_COMP_LOGE_STR("Error inserting \"target-hostname\" entry."); |
14f28187 | 450 | ret = -1; |
7cdc2bab MD |
451 | goto end; |
452 | } | |
453 | ||
454 | /* | |
455 | * key = "session-name", | |
456 | * value = <string>, | |
457 | */ | |
d24d5663 | 458 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 459 | session->session_name); |
d24d5663 | 460 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 461 | BT_COMP_LOGE_STR("Error inserting \"session-name\" entry."); |
14f28187 | 462 | ret = -1; |
7cdc2bab MD |
463 | goto end; |
464 | } | |
465 | ||
466 | /* | |
467 | * key = "timer-us", | |
468 | * value = <integer>, | |
469 | */ | |
470 | { | |
471 | uint32_t live_timer = be32toh(session->live_timer); | |
472 | ||
d24d5663 | 473 | insert_status = bt_value_map_insert_signed_integer_entry( |
fdd3a2da | 474 | map, "timer-us", live_timer); |
d24d5663 | 475 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 476 | BT_COMP_LOGE_STR("Error inserting \"timer-us\" entry."); |
14f28187 | 477 | ret = -1; |
7cdc2bab MD |
478 | goto end; |
479 | } | |
480 | } | |
481 | ||
482 | /* | |
483 | * key = "stream-count", | |
484 | * value = <integer>, | |
485 | */ | |
486 | { | |
487 | uint32_t streams = be32toh(session->streams); | |
488 | ||
d24d5663 | 489 | insert_status = bt_value_map_insert_signed_integer_entry(map, |
fdd3a2da | 490 | "stream-count", streams); |
d24d5663 | 491 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 492 | BT_COMP_LOGE_STR("Error inserting \"stream-count\" entry."); |
14f28187 | 493 | ret = -1; |
7cdc2bab MD |
494 | goto end; |
495 | } | |
496 | } | |
497 | ||
7cdc2bab MD |
498 | /* |
499 | * key = "client-count", | |
500 | * value = <integer>, | |
501 | */ | |
502 | { | |
503 | uint32_t clients = be32toh(session->clients); | |
504 | ||
d24d5663 | 505 | insert_status = bt_value_map_insert_signed_integer_entry(map, |
fdd3a2da | 506 | "client-count", clients); |
d24d5663 | 507 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 508 | BT_COMP_LOGE_STR("Error inserting \"client-count\" entry."); |
14f28187 | 509 | ret = -1; |
7cdc2bab MD |
510 | goto end; |
511 | } | |
512 | } | |
513 | ||
d24d5663 PP |
514 | append_status = bt_value_array_append_element(results, map); |
515 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
2ece7dd0 | 516 | BT_COMP_LOGE_STR("Error appending map to results."); |
14f28187 FD |
517 | ret = -1; |
518 | } | |
519 | ||
7cdc2bab MD |
520 | end: |
521 | if (url) { | |
14f28187 | 522 | g_string_free(url, true); |
7cdc2bab | 523 | } |
c5b9b441 | 524 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
525 | return ret; |
526 | } | |
527 | ||
528 | /* | |
529 | * Data structure returned: | |
530 | * | |
531 | * { | |
532 | * <array> = { | |
533 | * [n] = { | |
534 | * <map> = { | |
535 | * { | |
536 | * key = "url", | |
537 | * value = <string>, | |
538 | * }, | |
539 | * { | |
540 | * key = "target-hostname", | |
541 | * value = <string>, | |
542 | * }, | |
543 | * { | |
544 | * key = "session-name", | |
545 | * value = <string>, | |
546 | * }, | |
547 | * { | |
548 | * key = "timer-us", | |
549 | * value = <integer>, | |
550 | * }, | |
551 | * { | |
552 | * key = "stream-count", | |
553 | * value = <integer>, | |
554 | * }, | |
555 | * { | |
556 | * key = "client-count", | |
557 | * value = <integer>, | |
558 | * }, | |
559 | * }, | |
560 | * } | |
561 | * } | |
562 | */ | |
563 | ||
564 | BT_HIDDEN | |
d24d5663 | 565 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
14f28187 FD |
566 | struct live_viewer_connection *viewer_connection, |
567 | const bt_value **user_result) | |
7cdc2bab | 568 | { |
d24d5663 PP |
569 | bt_component_class_query_method_status status = |
570 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
14f28187 | 571 | bt_value *result = NULL; |
7cdc2bab MD |
572 | struct lttng_viewer_cmd cmd; |
573 | struct lttng_viewer_list_sessions list; | |
574 | uint32_t i, sessions_count; | |
575 | ssize_t ret_len; | |
576 | ||
577 | if (lttng_live_handshake(viewer_connection)) { | |
578 | goto error; | |
579 | } | |
580 | ||
14f28187 FD |
581 | result = bt_value_array_create(); |
582 | if (!result) { | |
2ece7dd0 | 583 | BT_COMP_LOGE("Error creating array"); |
d24d5663 | 584 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
585 | goto error; |
586 | } | |
587 | ||
588 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
589 | cmd.data_size = htobe64((uint64_t) 0); | |
590 | cmd.cmd_version = htobe32(0); | |
591 | ||
4c66436f | 592 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 593 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 594 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
d24d5663 | 595 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
596 | goto error; |
597 | } | |
f6ccaed9 | 598 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 599 | |
4c66436f | 600 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 601 | if (ret_len == 0) { |
2ece7dd0 | 602 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 603 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
604 | goto error; |
605 | } | |
1cb3cdd7 | 606 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 607 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
d24d5663 | 608 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
609 | goto error; |
610 | } | |
f6ccaed9 | 611 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
612 | |
613 | sessions_count = be32toh(list.sessions_count); | |
614 | for (i = 0; i < sessions_count; i++) { | |
615 | struct lttng_viewer_session lsession; | |
616 | ||
14f28187 FD |
617 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
618 | sizeof(lsession)); | |
7cdc2bab | 619 | if (ret_len == 0) { |
2ece7dd0 | 620 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 621 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
622 | goto error; |
623 | } | |
1cb3cdd7 | 624 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 625 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
d24d5663 | 626 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
627 | goto error; |
628 | } | |
f6ccaed9 | 629 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
630 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
631 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
14f28187 | 632 | if (list_append_session(result, viewer_connection->url, |
c01594de | 633 | &lsession, viewer_connection)) { |
d24d5663 | 634 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
635 | goto error; |
636 | } | |
637 | } | |
14f28187 FD |
638 | |
639 | *user_result = result; | |
7cdc2bab MD |
640 | goto end; |
641 | error: | |
14f28187 | 642 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 643 | end: |
14f28187 | 644 | return status; |
7cdc2bab MD |
645 | } |
646 | ||
647 | static | |
14f28187 | 648 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
649 | { |
650 | struct lttng_viewer_cmd cmd; | |
651 | struct lttng_viewer_list_sessions list; | |
652 | struct lttng_viewer_session lsession; | |
653 | uint32_t i, sessions_count; | |
654 | ssize_t ret_len; | |
655 | uint64_t session_id; | |
14f28187 FD |
656 | struct live_viewer_connection *viewer_connection = |
657 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
658 | |
659 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
660 | cmd.data_size = htobe64((uint64_t) 0); | |
661 | cmd.cmd_version = htobe32(0); | |
662 | ||
4c66436f | 663 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 664 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 665 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
666 | goto error; |
667 | } | |
f6ccaed9 | 668 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 669 | |
4c66436f | 670 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 671 | if (ret_len == 0) { |
2ece7dd0 | 672 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
673 | goto error; |
674 | } | |
1cb3cdd7 | 675 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 676 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
7cdc2bab MD |
677 | goto error; |
678 | } | |
f6ccaed9 | 679 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
680 | |
681 | sessions_count = be32toh(list.sessions_count); | |
682 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 683 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
684 | &lsession, sizeof(lsession)); |
685 | if (ret_len == 0) { | |
2ece7dd0 | 686 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
687 | goto error; |
688 | } | |
1cb3cdd7 | 689 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 690 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
7cdc2bab MD |
691 | goto error; |
692 | } | |
f6ccaed9 | 693 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
694 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
695 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
696 | session_id = be64toh(lsession.id); | |
697 | ||
2ece7dd0 | 698 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
699 | session_id, lsession.hostname, lsession.session_name); |
700 | ||
7cdc2bab | 701 | if ((strncmp(lsession.session_name, |
94b828f3 | 702 | viewer_connection->session_name->str, |
1cb3cdd7 | 703 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 704 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 705 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
14f28187 | 706 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
707 | lsession.hostname, |
708 | lsession.session_name)) { | |
7cdc2bab MD |
709 | goto error; |
710 | } | |
711 | } | |
712 | } | |
713 | ||
714 | return 0; | |
715 | ||
716 | error: | |
2ece7dd0 | 717 | BT_COMP_LOGE("Unable to query session ids"); |
7cdc2bab MD |
718 | return -1; |
719 | } | |
720 | ||
721 | BT_HIDDEN | |
14f28187 FD |
722 | int lttng_live_create_viewer_session( |
723 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
724 | { |
725 | struct lttng_viewer_cmd cmd; | |
726 | struct lttng_viewer_create_session_response resp; | |
727 | ssize_t ret_len; | |
14f28187 FD |
728 | struct live_viewer_connection *viewer_connection = |
729 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
730 | |
731 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
732 | cmd.data_size = htobe64((uint64_t) 0); | |
733 | cmd.cmd_version = htobe32(0); | |
734 | ||
4c66436f | 735 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 736 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 737 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
738 | goto error; |
739 | } | |
f6ccaed9 | 740 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 741 | |
4c66436f | 742 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 743 | if (ret_len == 0) { |
2ece7dd0 | 744 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
745 | goto error; |
746 | } | |
1cb3cdd7 | 747 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 748 | BT_COMP_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); |
7cdc2bab MD |
749 | goto error; |
750 | } | |
f6ccaed9 | 751 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
752 | |
753 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
2ece7dd0 | 754 | BT_COMP_LOGE("Error creating viewer session"); |
7cdc2bab MD |
755 | goto error; |
756 | } | |
14f28187 | 757 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
7cdc2bab MD |
758 | goto error; |
759 | } | |
760 | ||
761 | return 0; | |
762 | ||
763 | error: | |
764 | return -1; | |
765 | } | |
766 | ||
767 | static | |
768 | int receive_streams(struct lttng_live_session *session, | |
769 | uint32_t stream_count) | |
770 | { | |
771 | ssize_t ret_len; | |
772 | uint32_t i; | |
14f28187 FD |
773 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
774 | session->lttng_live_msg_iter; | |
775 | struct live_viewer_connection *viewer_connection = | |
776 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 777 | |
2ece7dd0 | 778 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
779 | for (i = 0; i < stream_count; i++) { |
780 | struct lttng_viewer_stream stream; | |
781 | struct lttng_live_stream_iterator *live_stream; | |
782 | uint64_t stream_id; | |
783 | uint64_t ctf_trace_id; | |
784 | ||
4c66436f | 785 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 786 | if (ret_len == 0) { |
2ece7dd0 | 787 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
788 | goto error; |
789 | } | |
1cb3cdd7 | 790 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 791 | BT_COMP_LOGE("Error receiving stream"); |
7cdc2bab MD |
792 | goto error; |
793 | } | |
f6ccaed9 | 794 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
795 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
796 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
797 | stream_id = be64toh(stream.id); | |
798 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
799 | ||
800 | if (stream.metadata_flag) { | |
2ece7dd0 | 801 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
802 | stream_id, stream.path_name, |
803 | stream.channel_name); | |
804 | if (lttng_live_metadata_create_stream(session, | |
06994c71 MD |
805 | ctf_trace_id, stream_id, |
806 | stream.path_name)) { | |
2ece7dd0 | 807 | BT_COMP_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
808 | |
809 | goto error; | |
810 | } | |
d6e69534 | 811 | session->lazy_stream_msg_init = true; |
7cdc2bab | 812 | } else { |
2ece7dd0 | 813 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
814 | stream_id, stream.path_name, |
815 | stream.channel_name); | |
816 | live_stream = lttng_live_stream_iterator_create(session, | |
817 | ctf_trace_id, stream_id); | |
818 | if (!live_stream) { | |
2ece7dd0 | 819 | BT_COMP_LOGE("Error creating streamn"); |
7cdc2bab MD |
820 | goto error; |
821 | } | |
822 | } | |
823 | } | |
824 | return 0; | |
825 | ||
826 | error: | |
827 | return -1; | |
828 | } | |
829 | ||
830 | BT_HIDDEN | |
831 | int lttng_live_attach_session(struct lttng_live_session *session) | |
832 | { | |
833 | struct lttng_viewer_cmd cmd; | |
834 | struct lttng_viewer_attach_session_request rq; | |
835 | struct lttng_viewer_attach_session_response rp; | |
836 | ssize_t ret_len; | |
14f28187 FD |
837 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
838 | struct live_viewer_connection *viewer_connection = | |
839 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
840 | uint64_t session_id = session->id; |
841 | uint32_t streams_count; | |
bdcbd52e JR |
842 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
843 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 844 | |
7cdc2bab MD |
845 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
846 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
847 | cmd.cmd_version = htobe32(0); | |
848 | ||
849 | memset(&rq, 0, sizeof(rq)); | |
850 | rq.session_id = htobe64(session_id); | |
851 | // TODO: add cmd line parameter to select seek beginning | |
852 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
853 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
854 | ||
bdcbd52e JR |
855 | /* |
856 | * Merge the cmd and connection request to prevent a write-write | |
857 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
858 | * second write to be performed quickly in presence of Nagle's algorithm. | |
859 | */ | |
860 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
861 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 862 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 863 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 864 | BT_COMP_LOGE("Error sending attach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
865 | goto error; |
866 | } | |
7cdc2bab | 867 | |
f6ccaed9 | 868 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 869 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 870 | if (ret_len == 0) { |
2ece7dd0 | 871 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
872 | goto error; |
873 | } | |
1cb3cdd7 | 874 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 875 | BT_COMP_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
876 | goto error; |
877 | } | |
f6ccaed9 | 878 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
879 | |
880 | streams_count = be32toh(rp.streams_count); | |
881 | switch(be32toh(rp.status)) { | |
882 | case LTTNG_VIEWER_ATTACH_OK: | |
883 | break; | |
884 | case LTTNG_VIEWER_ATTACH_UNK: | |
2ece7dd0 | 885 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
886 | goto error; |
887 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
2ece7dd0 | 888 | BT_COMP_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
889 | goto error; |
890 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
2ece7dd0 | 891 | BT_COMP_LOGW("Not a live session"); |
7cdc2bab MD |
892 | goto error; |
893 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
2ece7dd0 | 894 | BT_COMP_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
895 | goto error; |
896 | default: | |
2ece7dd0 | 897 | BT_COMP_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
898 | goto error; |
899 | } | |
900 | ||
901 | /* We receive the initial list of streams. */ | |
902 | if (receive_streams(session, streams_count)) { | |
903 | goto error; | |
904 | } | |
905 | ||
906 | session->attached = true; | |
907 | session->new_streams_needed = false; | |
908 | ||
909 | return 0; | |
910 | ||
911 | error: | |
912 | return -1; | |
913 | } | |
914 | ||
915 | BT_HIDDEN | |
916 | int lttng_live_detach_session(struct lttng_live_session *session) | |
917 | { | |
918 | struct lttng_viewer_cmd cmd; | |
919 | struct lttng_viewer_detach_session_request rq; | |
920 | struct lttng_viewer_detach_session_response rp; | |
921 | ssize_t ret_len; | |
14f28187 FD |
922 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
923 | struct live_viewer_connection *viewer_connection = | |
924 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 925 | uint64_t session_id = session->id; |
bdcbd52e JR |
926 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
927 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
928 | |
929 | if (!session->attached) { | |
930 | return 0; | |
931 | } | |
932 | ||
933 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
934 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
935 | cmd.cmd_version = htobe32(0); | |
936 | ||
937 | memset(&rq, 0, sizeof(rq)); | |
938 | rq.session_id = htobe64(session_id); | |
939 | ||
bdcbd52e JR |
940 | /* |
941 | * Merge the cmd and connection request to prevent a write-write | |
942 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
943 | * second write to be performed quickly in presence of Nagle's algorithm. | |
944 | */ | |
945 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
946 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 947 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 948 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 949 | BT_COMP_LOGE("Error sending detach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
950 | goto error; |
951 | } | |
7cdc2bab | 952 | |
f6ccaed9 | 953 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 954 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 955 | if (ret_len == 0) { |
2ece7dd0 | 956 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
957 | goto error; |
958 | } | |
1cb3cdd7 | 959 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 960 | BT_COMP_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
961 | goto error; |
962 | } | |
f6ccaed9 | 963 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
964 | |
965 | switch(be32toh(rp.status)) { | |
966 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
967 | break; | |
968 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
2ece7dd0 | 969 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
970 | goto error; |
971 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
2ece7dd0 | 972 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
973 | goto error; |
974 | default: | |
2ece7dd0 | 975 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
976 | goto error; |
977 | } | |
978 | ||
979 | session->attached = false; | |
980 | ||
981 | return 0; | |
982 | ||
983 | error: | |
984 | return -1; | |
985 | } | |
986 | ||
987 | BT_HIDDEN | |
988 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
989 | FILE *fp) | |
990 | { | |
991 | uint64_t len = 0; | |
992 | int ret; | |
993 | struct lttng_viewer_cmd cmd; | |
994 | struct lttng_viewer_get_metadata rq; | |
995 | struct lttng_viewer_metadata_packet rp; | |
996 | char *data = NULL; | |
997 | ssize_t ret_len; | |
998 | struct lttng_live_session *session = trace->session; | |
14f28187 | 999 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
7cdc2bab | 1000 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 FD |
1001 | struct live_viewer_connection *viewer_connection = |
1002 | lttng_live_msg_iter->viewer_connection; | |
bdcbd52e JR |
1003 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1004 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1005 | |
1006 | rq.stream_id = htobe64(metadata->stream_id); | |
1007 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1008 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1009 | cmd.cmd_version = htobe32(0); | |
1010 | ||
bdcbd52e JR |
1011 | /* |
1012 | * Merge the cmd and connection request to prevent a write-write | |
1013 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1014 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1015 | */ | |
1016 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1017 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1018 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1019 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1020 | BT_COMP_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1021 | goto error; |
1022 | } | |
7cdc2bab | 1023 | |
f6ccaed9 | 1024 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1025 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1026 | if (ret_len == 0) { |
2ece7dd0 | 1027 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1028 | goto error; |
1029 | } | |
1cb3cdd7 | 1030 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1031 | BT_COMP_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1032 | goto error; |
1033 | } | |
f6ccaed9 | 1034 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1035 | |
1036 | switch (be32toh(rp.status)) { | |
1037 | case LTTNG_VIEWER_METADATA_OK: | |
2ece7dd0 | 1038 | BT_COMP_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1039 | break; |
1040 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
2ece7dd0 | 1041 | BT_COMP_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1042 | ret = 0; |
1043 | goto end; | |
1044 | case LTTNG_VIEWER_METADATA_ERR: | |
2ece7dd0 | 1045 | BT_COMP_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1046 | goto error; |
1047 | default: | |
2ece7dd0 | 1048 | BT_COMP_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1049 | goto error; |
1050 | } | |
1051 | ||
1052 | len = be64toh(rp.len); | |
2ece7dd0 | 1053 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1054 | if (len <= 0) { |
1055 | goto error; | |
1056 | } | |
1057 | ||
91d81473 | 1058 | data = calloc(1, len); |
7cdc2bab | 1059 | if (!data) { |
2ece7dd0 | 1060 | BT_COMP_LOGE("relay data calloc: %s", strerror(errno)); |
7cdc2bab MD |
1061 | goto error; |
1062 | } | |
4c66436f | 1063 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1064 | if (ret_len == 0) { |
2ece7dd0 | 1065 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1066 | goto error_free_data; |
1067 | } | |
1cb3cdd7 | 1068 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1069 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1070 | goto error_free_data; |
1071 | } | |
f6ccaed9 | 1072 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1073 | |
1074 | do { | |
1075 | ret_len = fwrite(data, 1, len, fp); | |
1076 | } while (ret_len < 0 && errno == EINTR); | |
1077 | if (ret_len < 0) { | |
2ece7dd0 | 1078 | BT_COMP_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1079 | goto error_free_data; |
1080 | } | |
f6ccaed9 | 1081 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1082 | free(data); |
1083 | ret = len; | |
1084 | end: | |
1085 | return ret; | |
1086 | ||
1087 | error_free_data: | |
1088 | free(data); | |
1089 | error: | |
1090 | return -1; | |
1091 | } | |
1092 | ||
1093 | /* | |
1094 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1095 | */ | |
1096 | static | |
1097 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1098 | struct packet_index *pindex) | |
1099 | { | |
f6ccaed9 PP |
1100 | BT_ASSERT(lindex); |
1101 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1102 | |
1103 | pindex->offset = be64toh(lindex->offset); | |
1104 | pindex->packet_size = be64toh(lindex->packet_size); | |
1105 | pindex->content_size = be64toh(lindex->content_size); | |
1106 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1107 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1108 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1109 | } | |
1110 | ||
1111 | BT_HIDDEN | |
14f28187 FD |
1112 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1113 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1114 | struct lttng_live_stream_iterator *stream, |
1115 | struct packet_index *index) | |
1116 | { | |
1117 | struct lttng_viewer_cmd cmd; | |
1118 | struct lttng_viewer_get_next_index rq; | |
1119 | ssize_t ret_len; | |
1120 | struct lttng_viewer_index rp; | |
1121 | uint32_t flags, status; | |
14f28187 FD |
1122 | enum lttng_live_iterator_status retstatus = |
1123 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1124 | struct live_viewer_connection *viewer_connection = | |
1125 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1126 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1127 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1128 | char cmd_buf[cmd_buf_len]; | |
14f28187 FD |
1129 | struct lttng_live_component *lttng_live = |
1130 | lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab MD |
1131 | |
1132 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1133 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1134 | cmd.cmd_version = htobe32(0); | |
1135 | ||
bdcbd52e | 1136 | |
7cdc2bab MD |
1137 | memset(&rq, 0, sizeof(rq)); |
1138 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1139 | ||
bdcbd52e JR |
1140 | /* |
1141 | * Merge the cmd and connection request to prevent a write-write | |
1142 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1143 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1144 | */ | |
1145 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1146 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1147 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1148 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1149 | BT_COMP_LOGE("Error sending get_next_index request: %s", |
14f28187 | 1150 | bt_socket_errormsg()); |
7cdc2bab MD |
1151 | goto error; |
1152 | } | |
7cdc2bab | 1153 | |
f6ccaed9 | 1154 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1155 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1156 | if (ret_len == 0) { |
2ece7dd0 | 1157 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1158 | goto error; |
1159 | } | |
1cb3cdd7 | 1160 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1161 | BT_COMP_LOGE("Error receiving get_next_index response: %s", |
14f28187 | 1162 | bt_socket_errormsg()); |
7cdc2bab MD |
1163 | goto error; |
1164 | } | |
f6ccaed9 | 1165 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1166 | |
1167 | flags = be32toh(rp.flags); | |
1168 | status = be32toh(rp.status); | |
1169 | ||
1170 | switch (status) { | |
1171 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1172 | { | |
1173 | uint64_t ctf_stream_class_id; | |
1174 | ||
2ece7dd0 | 1175 | BT_COMP_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1176 | memset(index, 0, sizeof(struct packet_index)); |
1177 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
14f28187 | 1178 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1179 | ctf_stream_class_id = be64toh(rp.stream_id); |
1180 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1181 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1182 | ctf_stream_class_id); |
1183 | } else { | |
1184 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1185 | } | |
1186 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1187 | break; | |
1188 | } | |
1189 | case LTTNG_VIEWER_INDEX_OK: | |
1190 | { | |
1191 | uint64_t ctf_stream_class_id; | |
1192 | ||
2ece7dd0 | 1193 | BT_COMP_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1194 | lttng_index_to_packet_index(&rp, index); |
1195 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1196 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1197 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1198 | ctf_stream_class_id); |
1199 | } else { | |
1200 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1201 | } | |
1202 | ||
1203 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1204 | |
1205 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1206 | BT_COMP_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1207 | trace->new_metadata_needed = true; |
1208 | } | |
1209 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1210 | BT_COMP_LOGD("get_next_index: new streams needed"); |
14f28187 | 1211 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1212 | } |
1213 | break; | |
1214 | } | |
1215 | case LTTNG_VIEWER_INDEX_RETRY: | |
2ece7dd0 | 1216 | BT_COMP_LOGD("get_next_index: retry"); |
7cdc2bab | 1217 | memset(index, 0, sizeof(struct packet_index)); |
14f28187 | 1218 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1219 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1220 | goto end; | |
1221 | case LTTNG_VIEWER_INDEX_HUP: | |
2ece7dd0 | 1222 | BT_COMP_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1223 | memset(index, 0, sizeof(struct packet_index)); |
1224 | index->offset = EOF; | |
14f28187 | 1225 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1226 | stream->state = LTTNG_LIVE_STREAM_EOF; |
1227 | break; | |
1228 | case LTTNG_VIEWER_INDEX_ERR: | |
2ece7dd0 | 1229 | BT_COMP_LOGE("get_next_index: error"); |
7cdc2bab MD |
1230 | memset(index, 0, sizeof(struct packet_index)); |
1231 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1232 | goto error; | |
1233 | default: | |
2ece7dd0 | 1234 | BT_COMP_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1235 | memset(index, 0, sizeof(struct packet_index)); |
1236 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1237 | goto error; | |
1238 | } | |
1239 | end: | |
1240 | return retstatus; | |
1241 | ||
1242 | error: | |
42521b69 | 1243 | if (lttng_live_graph_is_canceled(lttng_live)) { |
14f28187 | 1244 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1245 | } else { |
14f28187 | 1246 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1247 | } |
7cdc2bab MD |
1248 | return retstatus; |
1249 | } | |
1250 | ||
1251 | BT_HIDDEN | |
14f28187 FD |
1252 | enum bt_msg_iter_medium_status lttng_live_get_stream_bytes( |
1253 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1254 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1255 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1256 | { |
d6e69534 | 1257 | enum bt_msg_iter_medium_status retstatus = BT_MSG_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
1258 | struct lttng_viewer_cmd cmd; |
1259 | struct lttng_viewer_get_packet rq; | |
1260 | struct lttng_viewer_trace_packet rp; | |
1261 | ssize_t ret_len; | |
1262 | uint32_t flags, status; | |
14f28187 FD |
1263 | struct live_viewer_connection *viewer_connection = |
1264 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1265 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1266 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1267 | char cmd_buf[cmd_buf_len]; | |
14f28187 FD |
1268 | struct lttng_live_component *lttng_live = |
1269 | lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab | 1270 | |
2ece7dd0 | 1271 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1272 | offset, req_len); |
1273 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1274 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1275 | cmd.cmd_version = htobe32(0); | |
1276 | ||
1277 | memset(&rq, 0, sizeof(rq)); | |
1278 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1279 | rq.offset = htobe64(offset); | |
1280 | rq.len = htobe32(req_len); | |
1281 | ||
bdcbd52e JR |
1282 | /* |
1283 | * Merge the cmd and connection request to prevent a write-write | |
1284 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1285 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1286 | */ | |
1287 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1288 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1289 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1290 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1291 | BT_COMP_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1292 | goto error; |
1293 | } | |
7cdc2bab | 1294 | |
f6ccaed9 | 1295 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1296 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1297 | if (ret_len == 0) { |
2ece7dd0 | 1298 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1299 | goto error; |
1300 | } | |
1cb3cdd7 | 1301 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1302 | BT_COMP_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1303 | goto error; |
1304 | } | |
1305 | if (ret_len != sizeof(rp)) { | |
2ece7dd0 | 1306 | BT_COMP_LOGE("get_data_packet: expected %zu" |
087bc060 | 1307 | ", received %zd", sizeof(rp), |
7cdc2bab MD |
1308 | ret_len); |
1309 | goto error; | |
1310 | } | |
1311 | ||
1312 | flags = be32toh(rp.flags); | |
1313 | status = be32toh(rp.status); | |
1314 | ||
1315 | switch (status) { | |
1316 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1317 | req_len = be32toh(rp.len); | |
2ece7dd0 | 1318 | BT_COMP_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1319 | break; |
1320 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1321 | /* Unimplemented by relay daemon */ | |
2ece7dd0 | 1322 | BT_COMP_LOGD("get_data_packet: retry"); |
d6e69534 | 1323 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1324 | goto end; |
1325 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1326 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1327 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1328 | trace->new_metadata_needed = true; |
1329 | } | |
1330 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1331 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
14f28187 | 1332 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1333 | } |
1334 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1335 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
d6e69534 | 1336 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1337 | goto end; |
1338 | } | |
2ece7dd0 | 1339 | BT_COMP_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1340 | goto error; |
1341 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
d6e69534 | 1342 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1343 | goto end; |
1344 | default: | |
2ece7dd0 | 1345 | BT_COMP_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1346 | goto error; |
1347 | } | |
1348 | ||
1349 | if (req_len == 0) { | |
1350 | goto error; | |
1351 | } | |
1352 | ||
4c66436f | 1353 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1354 | if (ret_len == 0) { |
2ece7dd0 | 1355 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1356 | goto error; |
1357 | } | |
1cb3cdd7 | 1358 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1359 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1360 | goto error; |
1361 | } | |
f6ccaed9 | 1362 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1363 | *recv_len = ret_len; |
1364 | end: | |
1365 | return retstatus; | |
1366 | ||
1367 | error: | |
42521b69 | 1368 | if (lttng_live_graph_is_canceled(lttng_live)) { |
d6e69534 | 1369 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1370 | } else { |
d6e69534 | 1371 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1372 | } |
7cdc2bab MD |
1373 | return retstatus; |
1374 | } | |
1375 | ||
1376 | /* | |
1377 | * Request new streams for a session. | |
1378 | */ | |
1379 | BT_HIDDEN | |
14f28187 | 1380 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1381 | struct lttng_live_session *session) |
1382 | { | |
14f28187 FD |
1383 | enum lttng_live_iterator_status status = |
1384 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1385 | struct lttng_viewer_cmd cmd; |
1386 | struct lttng_viewer_new_streams_request rq; | |
1387 | struct lttng_viewer_new_streams_response rp; | |
1388 | ssize_t ret_len; | |
14f28187 FD |
1389 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1390 | session->lttng_live_msg_iter; | |
1391 | struct live_viewer_connection *viewer_connection = | |
1392 | lttng_live_msg_iter->viewer_connection; | |
1393 | struct lttng_live_component *lttng_live = | |
1394 | lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab | 1395 | uint32_t streams_count; |
bdcbd52e JR |
1396 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1397 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1398 | |
1399 | if (!session->new_streams_needed) { | |
14f28187 | 1400 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1401 | } |
1402 | ||
1403 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1404 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1405 | cmd.cmd_version = htobe32(0); | |
1406 | ||
1407 | memset(&rq, 0, sizeof(rq)); | |
1408 | rq.session_id = htobe64(session->id); | |
1409 | ||
bdcbd52e JR |
1410 | /* |
1411 | * Merge the cmd and connection request to prevent a write-write | |
1412 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1413 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1414 | */ | |
1415 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1416 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1417 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1418 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1419 | BT_COMP_LOGE("Error sending get_new_streams request: %s", |
14f28187 | 1420 | bt_socket_errormsg()); |
7cdc2bab MD |
1421 | goto error; |
1422 | } | |
7cdc2bab | 1423 | |
f6ccaed9 | 1424 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1425 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1426 | if (ret_len == 0) { |
2ece7dd0 | 1427 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1428 | goto error; |
1429 | } | |
1cb3cdd7 | 1430 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1431 | BT_COMP_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1432 | goto error; |
1433 | } | |
f6ccaed9 | 1434 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1435 | |
1436 | streams_count = be32toh(rp.streams_count); | |
1437 | ||
1438 | switch(be32toh(rp.status)) { | |
1439 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1440 | session->new_streams_needed = false; | |
1441 | break; | |
1442 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1443 | session->new_streams_needed = false; | |
1444 | goto end; | |
1445 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1446 | session->new_streams_needed = false; | |
1447 | session->closed = true; | |
14f28187 | 1448 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1449 | goto end; |
1450 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
2ece7dd0 | 1451 | BT_COMP_LOGE("get_new_streams error"); |
7cdc2bab MD |
1452 | goto error; |
1453 | default: | |
2ece7dd0 | 1454 | BT_COMP_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1455 | goto error; |
1456 | } | |
1457 | ||
1458 | if (receive_streams(session, streams_count)) { | |
1459 | goto error; | |
1460 | } | |
1461 | end: | |
1462 | return status; | |
1463 | ||
1464 | error: | |
42521b69 | 1465 | if (lttng_live_graph_is_canceled(lttng_live)) { |
14f28187 | 1466 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1467 | } else { |
14f28187 | 1468 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1469 | } |
7cdc2bab MD |
1470 | return status; |
1471 | } | |
1472 | ||
1473 | BT_HIDDEN | |
14f28187 FD |
1474 | struct live_viewer_connection *live_viewer_connection_create( |
1475 | const char *url, bool in_query, | |
1476 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab | 1477 | { |
14f28187 | 1478 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1479 | |
14f28187 | 1480 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1481 | |
95c324a4 | 1482 | if (bt_socket_init(lttng_live_msg_iter->log_level) != 0) { |
1cb3cdd7 MJ |
1483 | goto error; |
1484 | } | |
1485 | ||
c01594de | 1486 | viewer_connection->log_level = lttng_live_msg_iter->log_level; |
2ece7dd0 | 1487 | viewer_connection->self_comp = lttng_live_msg_iter->self_comp; |
14f28187 | 1488 | bt_object_init_shared(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1489 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1490 | viewer_connection->port = -1; |
14f28187 FD |
1491 | viewer_connection->in_query = in_query; |
1492 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1493 | viewer_connection->url = g_string_new(url); |
1494 | if (!viewer_connection->url) { | |
1495 | goto error; | |
1496 | } | |
1497 | ||
2ece7dd0 | 1498 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1499 | if (lttng_live_connect_viewer(viewer_connection)) { |
1500 | goto error_report; | |
1501 | } | |
2ece7dd0 | 1502 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1503 | return viewer_connection; |
1504 | ||
1505 | error_report: | |
2ece7dd0 | 1506 | BT_COMP_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab MD |
1507 | error: |
1508 | g_free(viewer_connection); | |
1509 | return NULL; | |
1510 | } | |
1511 | ||
1512 | BT_HIDDEN | |
14f28187 FD |
1513 | void live_viewer_connection_destroy( |
1514 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1515 | { |
2ece7dd0 | 1516 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab | 1517 | lttng_live_disconnect_viewer(viewer_connection); |
14f28187 | 1518 | g_string_free(viewer_connection->url, true); |
94b828f3 | 1519 | if (viewer_connection->relay_hostname) { |
14f28187 | 1520 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 MD |
1521 | } |
1522 | if (viewer_connection->target_hostname) { | |
14f28187 | 1523 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 MD |
1524 | } |
1525 | if (viewer_connection->session_name) { | |
14f28187 | 1526 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1527 | } |
7cdc2bab | 1528 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1529 | |
1530 | bt_socket_fini(); | |
7cdc2bab | 1531 | } |