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 | |
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, |
5084732e PP |
152 | !viewer_connection->target_hostname ? |
153 | "<none>" : viewer_connection->target_hostname->str, | |
154 | !viewer_connection->session_name ? | |
155 | "<none>" : viewer_connection->session_name->str, | |
94b828f3 | 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 | ||
393729a6 | 319 | len = bt_value_array_get_length(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 | 349 | |
2242b43d PP |
350 | if (strcmp(session->hostname, hostname_str) == 0 |
351 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
352 | int64_t val; |
353 | uint32_t streams = be32toh(session->streams); | |
354 | uint32_t clients = be32toh(session->clients); | |
355 | ||
356 | found = true; | |
357 | ||
14f28187 | 358 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 359 | if (!btval) { |
2ece7dd0 | 360 | BT_COMP_LOGE_STR("Error borrowing \"stream-count\" entry."); |
14f28187 | 361 | ret = -1; |
7cdc2bab MD |
362 | goto end; |
363 | } | |
a91cb83e | 364 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
365 | /* sum */ |
366 | val += streams; | |
a91cb83e | 367 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 368 | |
14f28187 | 369 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 370 | if (!btval) { |
2ece7dd0 | 371 | BT_COMP_LOGE_STR("Error borrowing \"client-count\" entry."); |
14f28187 | 372 | ret = -1; |
7cdc2bab MD |
373 | goto end; |
374 | } | |
a91cb83e | 375 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 376 | /* max */ |
91d81473 | 377 | val = bt_max_t(int64_t, clients, val); |
a91cb83e | 378 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
379 | } |
380 | ||
7cdc2bab MD |
381 | if (found) { |
382 | break; | |
383 | } | |
384 | } | |
385 | end: | |
7cdc2bab MD |
386 | *_found = found; |
387 | return ret; | |
388 | } | |
389 | ||
390 | static | |
14f28187 | 391 | int list_append_session(bt_value *results, |
7cdc2bab | 392 | GString *base_url, |
c01594de PP |
393 | const struct lttng_viewer_session *session, |
394 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 395 | { |
14f28187 | 396 | int ret = 0; |
d24d5663 PP |
397 | bt_value_map_insert_entry_status insert_status; |
398 | bt_value_array_append_element_status append_status; | |
b19ff26f | 399 | bt_value *map = NULL; |
7cdc2bab MD |
400 | GString *url = NULL; |
401 | bool found = false; | |
402 | ||
403 | /* | |
404 | * If the session already exists, add the stream count to it, | |
405 | * and do max of client counts. | |
406 | */ | |
c01594de | 407 | ret = list_update_session(results, session, &found, viewer_connection); |
14f28187 | 408 | if (ret || found) { |
7cdc2bab MD |
409 | goto end; |
410 | } | |
411 | ||
14f28187 | 412 | map = bt_value_map_create(); |
7cdc2bab | 413 | if (!map) { |
2ece7dd0 | 414 | BT_COMP_LOGE_STR("Error creating map value."); |
14f28187 | 415 | ret = -1; |
7cdc2bab MD |
416 | goto end; |
417 | } | |
418 | ||
419 | if (base_url->len < 1) { | |
2ece7dd0 | 420 | BT_COMP_LOGE_STR("Error: base_url length smaller than 1."); |
14f28187 | 421 | ret = -1; |
7cdc2bab MD |
422 | goto end; |
423 | } | |
424 | /* | |
425 | * key = "url", | |
426 | * value = <string>, | |
427 | */ | |
428 | url = g_string_new(base_url->str); | |
429 | g_string_append(url, "/host/"); | |
430 | g_string_append(url, session->hostname); | |
431 | g_string_append_c(url, '/'); | |
432 | g_string_append(url, session->session_name); | |
433 | ||
d24d5663 PP |
434 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
435 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
2ece7dd0 | 436 | BT_COMP_LOGE_STR("Error inserting \"url\" entry."); |
14f28187 | 437 | ret = -1; |
7cdc2bab MD |
438 | goto end; |
439 | } | |
440 | ||
441 | /* | |
442 | * key = "target-hostname", | |
443 | * value = <string>, | |
444 | */ | |
d24d5663 | 445 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 446 | session->hostname); |
d24d5663 | 447 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 448 | BT_COMP_LOGE_STR("Error inserting \"target-hostname\" entry."); |
14f28187 | 449 | ret = -1; |
7cdc2bab MD |
450 | goto end; |
451 | } | |
452 | ||
453 | /* | |
454 | * key = "session-name", | |
455 | * value = <string>, | |
456 | */ | |
d24d5663 | 457 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 458 | session->session_name); |
d24d5663 | 459 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 460 | BT_COMP_LOGE_STR("Error inserting \"session-name\" entry."); |
14f28187 | 461 | ret = -1; |
7cdc2bab MD |
462 | goto end; |
463 | } | |
464 | ||
465 | /* | |
466 | * key = "timer-us", | |
467 | * value = <integer>, | |
468 | */ | |
469 | { | |
470 | uint32_t live_timer = be32toh(session->live_timer); | |
471 | ||
a91cb83e | 472 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
fdd3a2da | 473 | map, "timer-us", live_timer); |
d24d5663 | 474 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 475 | BT_COMP_LOGE_STR("Error inserting \"timer-us\" entry."); |
14f28187 | 476 | ret = -1; |
7cdc2bab MD |
477 | goto end; |
478 | } | |
479 | } | |
480 | ||
481 | /* | |
482 | * key = "stream-count", | |
483 | * value = <integer>, | |
484 | */ | |
485 | { | |
486 | uint32_t streams = be32toh(session->streams); | |
487 | ||
a91cb83e | 488 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 489 | "stream-count", streams); |
d24d5663 | 490 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 491 | BT_COMP_LOGE_STR("Error inserting \"stream-count\" entry."); |
14f28187 | 492 | ret = -1; |
7cdc2bab MD |
493 | goto end; |
494 | } | |
495 | } | |
496 | ||
7cdc2bab MD |
497 | /* |
498 | * key = "client-count", | |
499 | * value = <integer>, | |
500 | */ | |
501 | { | |
502 | uint32_t clients = be32toh(session->clients); | |
503 | ||
a91cb83e | 504 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 505 | "client-count", clients); |
d24d5663 | 506 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
2ece7dd0 | 507 | BT_COMP_LOGE_STR("Error inserting \"client-count\" entry."); |
14f28187 | 508 | ret = -1; |
7cdc2bab MD |
509 | goto end; |
510 | } | |
511 | } | |
512 | ||
d24d5663 PP |
513 | append_status = bt_value_array_append_element(results, map); |
514 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
2ece7dd0 | 515 | BT_COMP_LOGE_STR("Error appending map to results."); |
14f28187 FD |
516 | ret = -1; |
517 | } | |
518 | ||
7cdc2bab MD |
519 | end: |
520 | if (url) { | |
14f28187 | 521 | g_string_free(url, true); |
7cdc2bab | 522 | } |
c5b9b441 | 523 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
524 | return ret; |
525 | } | |
526 | ||
527 | /* | |
528 | * Data structure returned: | |
529 | * | |
530 | * { | |
531 | * <array> = { | |
532 | * [n] = { | |
533 | * <map> = { | |
534 | * { | |
535 | * key = "url", | |
536 | * value = <string>, | |
537 | * }, | |
538 | * { | |
539 | * key = "target-hostname", | |
540 | * value = <string>, | |
541 | * }, | |
542 | * { | |
543 | * key = "session-name", | |
544 | * value = <string>, | |
545 | * }, | |
546 | * { | |
547 | * key = "timer-us", | |
548 | * value = <integer>, | |
549 | * }, | |
550 | * { | |
551 | * key = "stream-count", | |
552 | * value = <integer>, | |
553 | * }, | |
554 | * { | |
555 | * key = "client-count", | |
556 | * value = <integer>, | |
557 | * }, | |
558 | * }, | |
559 | * } | |
560 | * } | |
561 | */ | |
562 | ||
563 | BT_HIDDEN | |
d24d5663 | 564 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
14f28187 FD |
565 | struct live_viewer_connection *viewer_connection, |
566 | const bt_value **user_result) | |
7cdc2bab | 567 | { |
d24d5663 PP |
568 | bt_component_class_query_method_status status = |
569 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
14f28187 | 570 | bt_value *result = NULL; |
7cdc2bab MD |
571 | struct lttng_viewer_cmd cmd; |
572 | struct lttng_viewer_list_sessions list; | |
573 | uint32_t i, sessions_count; | |
574 | ssize_t ret_len; | |
575 | ||
14f28187 FD |
576 | result = bt_value_array_create(); |
577 | if (!result) { | |
2ece7dd0 | 578 | BT_COMP_LOGE("Error creating array"); |
d24d5663 | 579 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
580 | goto error; |
581 | } | |
582 | ||
583 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
584 | cmd.data_size = htobe64((uint64_t) 0); | |
585 | cmd.cmd_version = htobe32(0); | |
586 | ||
4c66436f | 587 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 588 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 589 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
d24d5663 | 590 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
591 | goto error; |
592 | } | |
f6ccaed9 | 593 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 594 | |
4c66436f | 595 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 596 | if (ret_len == 0) { |
2ece7dd0 | 597 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 598 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
599 | goto error; |
600 | } | |
1cb3cdd7 | 601 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 602 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
d24d5663 | 603 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
604 | goto error; |
605 | } | |
f6ccaed9 | 606 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
607 | |
608 | sessions_count = be32toh(list.sessions_count); | |
609 | for (i = 0; i < sessions_count; i++) { | |
610 | struct lttng_viewer_session lsession; | |
611 | ||
14f28187 FD |
612 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
613 | sizeof(lsession)); | |
7cdc2bab | 614 | if (ret_len == 0) { |
2ece7dd0 | 615 | BT_COMP_LOGI("Remote side has closed connection"); |
d24d5663 | 616 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
617 | goto error; |
618 | } | |
1cb3cdd7 | 619 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 620 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
d24d5663 | 621 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
622 | goto error; |
623 | } | |
f6ccaed9 | 624 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
625 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
626 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
14f28187 | 627 | if (list_append_session(result, viewer_connection->url, |
c01594de | 628 | &lsession, viewer_connection)) { |
d24d5663 | 629 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
630 | goto error; |
631 | } | |
632 | } | |
14f28187 FD |
633 | |
634 | *user_result = result; | |
7cdc2bab MD |
635 | goto end; |
636 | error: | |
14f28187 | 637 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 638 | end: |
14f28187 | 639 | return status; |
7cdc2bab MD |
640 | } |
641 | ||
642 | static | |
14f28187 | 643 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
644 | { |
645 | struct lttng_viewer_cmd cmd; | |
646 | struct lttng_viewer_list_sessions list; | |
647 | struct lttng_viewer_session lsession; | |
648 | uint32_t i, sessions_count; | |
649 | ssize_t ret_len; | |
650 | uint64_t session_id; | |
14f28187 FD |
651 | struct live_viewer_connection *viewer_connection = |
652 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
653 | |
654 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
655 | cmd.data_size = htobe64((uint64_t) 0); | |
656 | cmd.cmd_version = htobe32(0); | |
657 | ||
4c66436f | 658 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 659 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 660 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
661 | goto error; |
662 | } | |
f6ccaed9 | 663 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 664 | |
4c66436f | 665 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 666 | if (ret_len == 0) { |
2ece7dd0 | 667 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
668 | goto error; |
669 | } | |
1cb3cdd7 | 670 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 671 | BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg()); |
7cdc2bab MD |
672 | goto error; |
673 | } | |
f6ccaed9 | 674 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
675 | |
676 | sessions_count = be32toh(list.sessions_count); | |
677 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 678 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
679 | &lsession, sizeof(lsession)); |
680 | if (ret_len == 0) { | |
2ece7dd0 | 681 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
682 | goto error; |
683 | } | |
1cb3cdd7 | 684 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 685 | BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg()); |
7cdc2bab MD |
686 | goto error; |
687 | } | |
f6ccaed9 | 688 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
689 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
690 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
691 | session_id = be64toh(lsession.id); | |
692 | ||
2ece7dd0 | 693 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
694 | session_id, lsession.hostname, lsession.session_name); |
695 | ||
7cdc2bab | 696 | if ((strncmp(lsession.session_name, |
94b828f3 | 697 | viewer_connection->session_name->str, |
1cb3cdd7 | 698 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 699 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 700 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
14f28187 | 701 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
702 | lsession.hostname, |
703 | lsession.session_name)) { | |
7cdc2bab MD |
704 | goto error; |
705 | } | |
706 | } | |
707 | } | |
708 | ||
709 | return 0; | |
710 | ||
711 | error: | |
2ece7dd0 | 712 | BT_COMP_LOGE("Unable to query session ids"); |
7cdc2bab MD |
713 | return -1; |
714 | } | |
715 | ||
716 | BT_HIDDEN | |
14f28187 FD |
717 | int lttng_live_create_viewer_session( |
718 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
719 | { |
720 | struct lttng_viewer_cmd cmd; | |
721 | struct lttng_viewer_create_session_response resp; | |
722 | ssize_t ret_len; | |
14f28187 FD |
723 | struct live_viewer_connection *viewer_connection = |
724 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
725 | |
726 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
727 | cmd.data_size = htobe64((uint64_t) 0); | |
728 | cmd.cmd_version = htobe32(0); | |
729 | ||
4c66436f | 730 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 731 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 732 | BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg()); |
7cdc2bab MD |
733 | goto error; |
734 | } | |
f6ccaed9 | 735 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 736 | |
4c66436f | 737 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 738 | if (ret_len == 0) { |
2ece7dd0 | 739 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
740 | goto error; |
741 | } | |
1cb3cdd7 | 742 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 743 | BT_COMP_LOGE("Error receiving create session reply: %s", bt_socket_errormsg()); |
7cdc2bab MD |
744 | goto error; |
745 | } | |
f6ccaed9 | 746 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
747 | |
748 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
2ece7dd0 | 749 | BT_COMP_LOGE("Error creating viewer session"); |
7cdc2bab MD |
750 | goto error; |
751 | } | |
14f28187 | 752 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
7cdc2bab MD |
753 | goto error; |
754 | } | |
755 | ||
756 | return 0; | |
757 | ||
758 | error: | |
759 | return -1; | |
760 | } | |
761 | ||
762 | static | |
763 | int receive_streams(struct lttng_live_session *session, | |
764 | uint32_t stream_count) | |
765 | { | |
766 | ssize_t ret_len; | |
767 | uint32_t i; | |
14f28187 FD |
768 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
769 | session->lttng_live_msg_iter; | |
770 | struct live_viewer_connection *viewer_connection = | |
771 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 772 | |
2ece7dd0 | 773 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
774 | for (i = 0; i < stream_count; i++) { |
775 | struct lttng_viewer_stream stream; | |
776 | struct lttng_live_stream_iterator *live_stream; | |
777 | uint64_t stream_id; | |
778 | uint64_t ctf_trace_id; | |
779 | ||
4c66436f | 780 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 781 | if (ret_len == 0) { |
2ece7dd0 | 782 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
783 | goto error; |
784 | } | |
1cb3cdd7 | 785 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 786 | BT_COMP_LOGE("Error receiving stream"); |
7cdc2bab MD |
787 | goto error; |
788 | } | |
f6ccaed9 | 789 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
790 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
791 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
792 | stream_id = be64toh(stream.id); | |
793 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
794 | ||
795 | if (stream.metadata_flag) { | |
2ece7dd0 | 796 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
797 | stream_id, stream.path_name, |
798 | stream.channel_name); | |
799 | if (lttng_live_metadata_create_stream(session, | |
06994c71 MD |
800 | ctf_trace_id, stream_id, |
801 | stream.path_name)) { | |
2ece7dd0 | 802 | BT_COMP_LOGE("Error creating metadata stream"); |
7cdc2bab MD |
803 | |
804 | goto error; | |
805 | } | |
d6e69534 | 806 | session->lazy_stream_msg_init = true; |
7cdc2bab | 807 | } else { |
2ece7dd0 | 808 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
7cdc2bab MD |
809 | stream_id, stream.path_name, |
810 | stream.channel_name); | |
811 | live_stream = lttng_live_stream_iterator_create(session, | |
812 | ctf_trace_id, stream_id); | |
813 | if (!live_stream) { | |
2ece7dd0 | 814 | BT_COMP_LOGE("Error creating streamn"); |
7cdc2bab MD |
815 | goto error; |
816 | } | |
817 | } | |
818 | } | |
819 | return 0; | |
820 | ||
821 | error: | |
822 | return -1; | |
823 | } | |
824 | ||
825 | BT_HIDDEN | |
826 | int lttng_live_attach_session(struct lttng_live_session *session) | |
827 | { | |
828 | struct lttng_viewer_cmd cmd; | |
829 | struct lttng_viewer_attach_session_request rq; | |
830 | struct lttng_viewer_attach_session_response rp; | |
831 | ssize_t ret_len; | |
14f28187 FD |
832 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
833 | struct live_viewer_connection *viewer_connection = | |
834 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab MD |
835 | uint64_t session_id = session->id; |
836 | uint32_t streams_count; | |
bdcbd52e JR |
837 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
838 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 839 | |
7cdc2bab MD |
840 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
841 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
842 | cmd.cmd_version = htobe32(0); | |
843 | ||
844 | memset(&rq, 0, sizeof(rq)); | |
845 | rq.session_id = htobe64(session_id); | |
846 | // TODO: add cmd line parameter to select seek beginning | |
847 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
848 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
849 | ||
bdcbd52e JR |
850 | /* |
851 | * Merge the cmd and connection request to prevent a write-write | |
852 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
853 | * second write to be performed quickly in presence of Nagle's algorithm. | |
854 | */ | |
855 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
856 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 857 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 858 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 859 | BT_COMP_LOGE("Error sending attach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
860 | goto error; |
861 | } | |
7cdc2bab | 862 | |
f6ccaed9 | 863 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 864 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 865 | if (ret_len == 0) { |
2ece7dd0 | 866 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
867 | goto error; |
868 | } | |
1cb3cdd7 | 869 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 870 | BT_COMP_LOGE("Error receiving attach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
871 | goto error; |
872 | } | |
f6ccaed9 | 873 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
874 | |
875 | streams_count = be32toh(rp.streams_count); | |
876 | switch(be32toh(rp.status)) { | |
877 | case LTTNG_VIEWER_ATTACH_OK: | |
878 | break; | |
879 | case LTTNG_VIEWER_ATTACH_UNK: | |
2ece7dd0 | 880 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
881 | goto error; |
882 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
2ece7dd0 | 883 | BT_COMP_LOGW("There is already a viewer attached to this session"); |
7cdc2bab MD |
884 | goto error; |
885 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
2ece7dd0 | 886 | BT_COMP_LOGW("Not a live session"); |
7cdc2bab MD |
887 | goto error; |
888 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
2ece7dd0 | 889 | BT_COMP_LOGE("Wrong seek parameter"); |
7cdc2bab MD |
890 | goto error; |
891 | default: | |
2ece7dd0 | 892 | BT_COMP_LOGE("Unknown attach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
893 | goto error; |
894 | } | |
895 | ||
896 | /* We receive the initial list of streams. */ | |
897 | if (receive_streams(session, streams_count)) { | |
898 | goto error; | |
899 | } | |
900 | ||
901 | session->attached = true; | |
902 | session->new_streams_needed = false; | |
903 | ||
904 | return 0; | |
905 | ||
906 | error: | |
907 | return -1; | |
908 | } | |
909 | ||
910 | BT_HIDDEN | |
911 | int lttng_live_detach_session(struct lttng_live_session *session) | |
912 | { | |
913 | struct lttng_viewer_cmd cmd; | |
914 | struct lttng_viewer_detach_session_request rq; | |
915 | struct lttng_viewer_detach_session_response rp; | |
916 | ssize_t ret_len; | |
14f28187 FD |
917 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
918 | struct live_viewer_connection *viewer_connection = | |
919 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 920 | uint64_t session_id = session->id; |
bdcbd52e JR |
921 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
922 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
923 | |
924 | if (!session->attached) { | |
925 | return 0; | |
926 | } | |
927 | ||
928 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
929 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
930 | cmd.cmd_version = htobe32(0); | |
931 | ||
932 | memset(&rq, 0, sizeof(rq)); | |
933 | rq.session_id = htobe64(session_id); | |
934 | ||
bdcbd52e JR |
935 | /* |
936 | * Merge the cmd and connection request to prevent a write-write | |
937 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
938 | * second write to be performed quickly in presence of Nagle's algorithm. | |
939 | */ | |
940 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
941 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 942 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 943 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 944 | BT_COMP_LOGE("Error sending detach request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
945 | goto error; |
946 | } | |
7cdc2bab | 947 | |
f6ccaed9 | 948 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 949 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 950 | if (ret_len == 0) { |
2ece7dd0 | 951 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
952 | goto error; |
953 | } | |
1cb3cdd7 | 954 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 955 | BT_COMP_LOGE("Error receiving detach response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
956 | goto error; |
957 | } | |
f6ccaed9 | 958 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
959 | |
960 | switch(be32toh(rp.status)) { | |
961 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
962 | break; | |
963 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
2ece7dd0 | 964 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
965 | goto error; |
966 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
2ece7dd0 | 967 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
968 | goto error; |
969 | default: | |
2ece7dd0 | 970 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
971 | goto error; |
972 | } | |
973 | ||
974 | session->attached = false; | |
975 | ||
976 | return 0; | |
977 | ||
978 | error: | |
979 | return -1; | |
980 | } | |
981 | ||
982 | BT_HIDDEN | |
983 | ssize_t lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, | |
984 | FILE *fp) | |
985 | { | |
986 | uint64_t len = 0; | |
987 | int ret; | |
988 | struct lttng_viewer_cmd cmd; | |
989 | struct lttng_viewer_get_metadata rq; | |
990 | struct lttng_viewer_metadata_packet rp; | |
991 | char *data = NULL; | |
992 | ssize_t ret_len; | |
993 | struct lttng_live_session *session = trace->session; | |
14f28187 | 994 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; |
7cdc2bab | 995 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 FD |
996 | struct live_viewer_connection *viewer_connection = |
997 | lttng_live_msg_iter->viewer_connection; | |
bdcbd52e JR |
998 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
999 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1000 | |
1001 | rq.stream_id = htobe64(metadata->stream_id); | |
1002 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1003 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1004 | cmd.cmd_version = htobe32(0); | |
1005 | ||
bdcbd52e JR |
1006 | /* |
1007 | * Merge the cmd and connection request to prevent a write-write | |
1008 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1009 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1010 | */ | |
1011 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1012 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1013 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1014 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1015 | BT_COMP_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1016 | goto error; |
1017 | } | |
7cdc2bab | 1018 | |
f6ccaed9 | 1019 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1020 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1021 | if (ret_len == 0) { |
2ece7dd0 | 1022 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1023 | goto error; |
1024 | } | |
1cb3cdd7 | 1025 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1026 | BT_COMP_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1027 | goto error; |
1028 | } | |
f6ccaed9 | 1029 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1030 | |
1031 | switch (be32toh(rp.status)) { | |
1032 | case LTTNG_VIEWER_METADATA_OK: | |
2ece7dd0 | 1033 | BT_COMP_LOGD("get_metadata : OK"); |
7cdc2bab MD |
1034 | break; |
1035 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
2ece7dd0 | 1036 | BT_COMP_LOGD("get_metadata : NO NEW"); |
7cdc2bab MD |
1037 | ret = 0; |
1038 | goto end; | |
1039 | case LTTNG_VIEWER_METADATA_ERR: | |
2ece7dd0 | 1040 | BT_COMP_LOGD("get_metadata : ERR"); |
7cdc2bab MD |
1041 | goto error; |
1042 | default: | |
2ece7dd0 | 1043 | BT_COMP_LOGD("get_metadata : UNKNOWN"); |
7cdc2bab MD |
1044 | goto error; |
1045 | } | |
1046 | ||
1047 | len = be64toh(rp.len); | |
2ece7dd0 | 1048 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab MD |
1049 | if (len <= 0) { |
1050 | goto error; | |
1051 | } | |
1052 | ||
91d81473 | 1053 | data = calloc(1, len); |
7cdc2bab | 1054 | if (!data) { |
2ece7dd0 | 1055 | BT_COMP_LOGE("relay data calloc: %s", strerror(errno)); |
7cdc2bab MD |
1056 | goto error; |
1057 | } | |
4c66436f | 1058 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1059 | if (ret_len == 0) { |
2ece7dd0 | 1060 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1061 | goto error_free_data; |
1062 | } | |
1cb3cdd7 | 1063 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1064 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1065 | goto error_free_data; |
1066 | } | |
f6ccaed9 | 1067 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1068 | |
1069 | do { | |
1070 | ret_len = fwrite(data, 1, len, fp); | |
1071 | } while (ret_len < 0 && errno == EINTR); | |
1072 | if (ret_len < 0) { | |
2ece7dd0 | 1073 | BT_COMP_LOGE("Writing in the metadata fp"); |
7cdc2bab MD |
1074 | goto error_free_data; |
1075 | } | |
f6ccaed9 | 1076 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1077 | free(data); |
1078 | ret = len; | |
1079 | end: | |
1080 | return ret; | |
1081 | ||
1082 | error_free_data: | |
1083 | free(data); | |
1084 | error: | |
1085 | return -1; | |
1086 | } | |
1087 | ||
1088 | /* | |
1089 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1090 | */ | |
1091 | static | |
1092 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1093 | struct packet_index *pindex) | |
1094 | { | |
f6ccaed9 PP |
1095 | BT_ASSERT(lindex); |
1096 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1097 | |
1098 | pindex->offset = be64toh(lindex->offset); | |
1099 | pindex->packet_size = be64toh(lindex->packet_size); | |
1100 | pindex->content_size = be64toh(lindex->content_size); | |
1101 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1102 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1103 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1104 | } | |
1105 | ||
1106 | BT_HIDDEN | |
14f28187 FD |
1107 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1108 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1109 | struct lttng_live_stream_iterator *stream, |
1110 | struct packet_index *index) | |
1111 | { | |
1112 | struct lttng_viewer_cmd cmd; | |
1113 | struct lttng_viewer_get_next_index rq; | |
1114 | ssize_t ret_len; | |
1115 | struct lttng_viewer_index rp; | |
1116 | uint32_t flags, status; | |
14f28187 FD |
1117 | enum lttng_live_iterator_status retstatus = |
1118 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1119 | struct live_viewer_connection *viewer_connection = | |
1120 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1121 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1122 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1123 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1124 | |
1125 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1126 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1127 | cmd.cmd_version = htobe32(0); | |
1128 | ||
bdcbd52e | 1129 | |
7cdc2bab MD |
1130 | memset(&rq, 0, sizeof(rq)); |
1131 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1132 | ||
bdcbd52e JR |
1133 | /* |
1134 | * Merge the cmd and connection request to prevent a write-write | |
1135 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1136 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1137 | */ | |
1138 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1139 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1140 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1141 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1142 | BT_COMP_LOGE("Error sending get_next_index request: %s", |
14f28187 | 1143 | bt_socket_errormsg()); |
7cdc2bab MD |
1144 | goto error; |
1145 | } | |
7cdc2bab | 1146 | |
f6ccaed9 | 1147 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1148 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1149 | if (ret_len == 0) { |
2ece7dd0 | 1150 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1151 | goto error; |
1152 | } | |
1cb3cdd7 | 1153 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1154 | BT_COMP_LOGE("Error receiving get_next_index response: %s", |
14f28187 | 1155 | bt_socket_errormsg()); |
7cdc2bab MD |
1156 | goto error; |
1157 | } | |
f6ccaed9 | 1158 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1159 | |
1160 | flags = be32toh(rp.flags); | |
1161 | status = be32toh(rp.status); | |
1162 | ||
1163 | switch (status) { | |
1164 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1165 | { | |
1166 | uint64_t ctf_stream_class_id; | |
1167 | ||
2ece7dd0 | 1168 | BT_COMP_LOGD("get_next_index: inactive"); |
7cdc2bab MD |
1169 | memset(index, 0, sizeof(struct packet_index)); |
1170 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
14f28187 | 1171 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1172 | ctf_stream_class_id = be64toh(rp.stream_id); |
1173 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1174 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1175 | ctf_stream_class_id); |
1176 | } else { | |
1177 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1178 | } | |
1179 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1180 | break; | |
1181 | } | |
1182 | case LTTNG_VIEWER_INDEX_OK: | |
1183 | { | |
1184 | uint64_t ctf_stream_class_id; | |
1185 | ||
2ece7dd0 | 1186 | BT_COMP_LOGD("get_next_index: OK"); |
7cdc2bab MD |
1187 | lttng_index_to_packet_index(&rp, index); |
1188 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1189 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1190 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1191 | ctf_stream_class_id); |
1192 | } else { | |
1193 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1194 | } | |
1195 | ||
1196 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1197 | |
1198 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1199 | BT_COMP_LOGD("get_next_index: new metadata needed"); |
7cdc2bab MD |
1200 | trace->new_metadata_needed = true; |
1201 | } | |
1202 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1203 | BT_COMP_LOGD("get_next_index: new streams needed"); |
14f28187 | 1204 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1205 | } |
1206 | break; | |
1207 | } | |
1208 | case LTTNG_VIEWER_INDEX_RETRY: | |
2ece7dd0 | 1209 | BT_COMP_LOGD("get_next_index: retry"); |
7cdc2bab | 1210 | memset(index, 0, sizeof(struct packet_index)); |
14f28187 | 1211 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1212 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1213 | goto end; | |
1214 | case LTTNG_VIEWER_INDEX_HUP: | |
2ece7dd0 | 1215 | BT_COMP_LOGD("get_next_index: stream hung up"); |
7cdc2bab MD |
1216 | memset(index, 0, sizeof(struct packet_index)); |
1217 | index->offset = EOF; | |
14f28187 | 1218 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab | 1219 | stream->state = LTTNG_LIVE_STREAM_EOF; |
4a39caef | 1220 | stream->has_stream_hung_up = true; |
7cdc2bab MD |
1221 | break; |
1222 | case LTTNG_VIEWER_INDEX_ERR: | |
2ece7dd0 | 1223 | BT_COMP_LOGE("get_next_index: error"); |
7cdc2bab MD |
1224 | memset(index, 0, sizeof(struct packet_index)); |
1225 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1226 | goto error; | |
1227 | default: | |
2ece7dd0 | 1228 | BT_COMP_LOGE("get_next_index: unknown value"); |
7cdc2bab MD |
1229 | memset(index, 0, sizeof(struct packet_index)); |
1230 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1231 | goto error; | |
1232 | } | |
1233 | end: | |
1234 | return retstatus; | |
1235 | ||
1236 | error: | |
9b4f9b42 | 1237 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1238 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1239 | } else { |
14f28187 | 1240 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1241 | } |
7cdc2bab MD |
1242 | return retstatus; |
1243 | } | |
1244 | ||
1245 | BT_HIDDEN | |
14f28187 FD |
1246 | enum bt_msg_iter_medium_status lttng_live_get_stream_bytes( |
1247 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1248 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1249 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1250 | { |
d6e69534 | 1251 | enum bt_msg_iter_medium_status retstatus = BT_MSG_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
1252 | struct lttng_viewer_cmd cmd; |
1253 | struct lttng_viewer_get_packet rq; | |
1254 | struct lttng_viewer_trace_packet rp; | |
1255 | ssize_t ret_len; | |
1256 | uint32_t flags, status; | |
14f28187 FD |
1257 | struct live_viewer_connection *viewer_connection = |
1258 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1259 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1260 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1261 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1262 | |
2ece7dd0 | 1263 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1264 | offset, req_len); |
1265 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1266 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1267 | cmd.cmd_version = htobe32(0); | |
1268 | ||
1269 | memset(&rq, 0, sizeof(rq)); | |
1270 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1271 | rq.offset = htobe64(offset); | |
1272 | rq.len = htobe32(req_len); | |
1273 | ||
bdcbd52e JR |
1274 | /* |
1275 | * Merge the cmd and connection request to prevent a write-write | |
1276 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1277 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1278 | */ | |
1279 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1280 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1281 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1282 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1283 | BT_COMP_LOGE("Error sending get_data request: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1284 | goto error; |
1285 | } | |
7cdc2bab | 1286 | |
f6ccaed9 | 1287 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1288 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1289 | if (ret_len == 0) { |
2ece7dd0 | 1290 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1291 | goto error; |
1292 | } | |
1cb3cdd7 | 1293 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1294 | BT_COMP_LOGE("Error receiving get_data response: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1295 | goto error; |
1296 | } | |
1297 | if (ret_len != sizeof(rp)) { | |
2ece7dd0 | 1298 | BT_COMP_LOGE("get_data_packet: expected %zu" |
087bc060 | 1299 | ", received %zd", sizeof(rp), |
7cdc2bab MD |
1300 | ret_len); |
1301 | goto error; | |
1302 | } | |
1303 | ||
1304 | flags = be32toh(rp.flags); | |
1305 | status = be32toh(rp.status); | |
1306 | ||
1307 | switch (status) { | |
1308 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1309 | req_len = be32toh(rp.len); | |
2ece7dd0 | 1310 | BT_COMP_LOGD("get_data_packet: Ok, packet size : %" PRIu64 "", req_len); |
7cdc2bab MD |
1311 | break; |
1312 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1313 | /* Unimplemented by relay daemon */ | |
2ece7dd0 | 1314 | BT_COMP_LOGD("get_data_packet: retry"); |
d6e69534 | 1315 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1316 | goto end; |
1317 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1318 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1319 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1320 | trace->new_metadata_needed = true; |
1321 | } | |
1322 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1323 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
14f28187 | 1324 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1325 | } |
1326 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1327 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
d6e69534 | 1328 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1329 | goto end; |
1330 | } | |
2ece7dd0 | 1331 | BT_COMP_LOGE("get_data_packet: error"); |
7cdc2bab MD |
1332 | goto error; |
1333 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
d6e69534 | 1334 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1335 | goto end; |
1336 | default: | |
2ece7dd0 | 1337 | BT_COMP_LOGE("get_data_packet: unknown"); |
7cdc2bab MD |
1338 | goto error; |
1339 | } | |
1340 | ||
1341 | if (req_len == 0) { | |
1342 | goto error; | |
1343 | } | |
1344 | ||
4c66436f | 1345 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1346 | if (ret_len == 0) { |
2ece7dd0 | 1347 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1348 | goto error; |
1349 | } | |
1cb3cdd7 | 1350 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1351 | BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg()); |
7cdc2bab MD |
1352 | goto error; |
1353 | } | |
f6ccaed9 | 1354 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1355 | *recv_len = ret_len; |
1356 | end: | |
1357 | return retstatus; | |
1358 | ||
1359 | error: | |
9b4f9b42 | 1360 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
d6e69534 | 1361 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1362 | } else { |
d6e69534 | 1363 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1364 | } |
7cdc2bab MD |
1365 | return retstatus; |
1366 | } | |
1367 | ||
1368 | /* | |
1369 | * Request new streams for a session. | |
1370 | */ | |
1371 | BT_HIDDEN | |
14f28187 | 1372 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1373 | struct lttng_live_session *session) |
1374 | { | |
14f28187 FD |
1375 | enum lttng_live_iterator_status status = |
1376 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1377 | struct lttng_viewer_cmd cmd; |
1378 | struct lttng_viewer_new_streams_request rq; | |
1379 | struct lttng_viewer_new_streams_response rp; | |
1380 | ssize_t ret_len; | |
14f28187 FD |
1381 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1382 | session->lttng_live_msg_iter; | |
1383 | struct live_viewer_connection *viewer_connection = | |
1384 | lttng_live_msg_iter->viewer_connection; | |
7cdc2bab | 1385 | uint32_t streams_count; |
bdcbd52e JR |
1386 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1387 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1388 | |
1389 | if (!session->new_streams_needed) { | |
14f28187 | 1390 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1391 | } |
1392 | ||
1393 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1394 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1395 | cmd.cmd_version = htobe32(0); | |
1396 | ||
1397 | memset(&rq, 0, sizeof(rq)); | |
1398 | rq.session_id = htobe64(session->id); | |
1399 | ||
bdcbd52e JR |
1400 | /* |
1401 | * Merge the cmd and connection request to prevent a write-write | |
1402 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1403 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1404 | */ | |
1405 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1406 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1407 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1408 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1409 | BT_COMP_LOGE("Error sending get_new_streams request: %s", |
14f28187 | 1410 | bt_socket_errormsg()); |
7cdc2bab MD |
1411 | goto error; |
1412 | } | |
7cdc2bab | 1413 | |
f6ccaed9 | 1414 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1415 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1416 | if (ret_len == 0) { |
2ece7dd0 | 1417 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1418 | goto error; |
1419 | } | |
1cb3cdd7 | 1420 | if (ret_len == BT_SOCKET_ERROR) { |
2ece7dd0 | 1421 | BT_COMP_LOGE("Error receiving get_new_streams response"); |
7cdc2bab MD |
1422 | goto error; |
1423 | } | |
f6ccaed9 | 1424 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1425 | |
1426 | streams_count = be32toh(rp.streams_count); | |
1427 | ||
1428 | switch(be32toh(rp.status)) { | |
1429 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1430 | session->new_streams_needed = false; | |
1431 | break; | |
1432 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1433 | session->new_streams_needed = false; | |
1434 | goto end; | |
1435 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1436 | session->new_streams_needed = false; | |
1437 | session->closed = true; | |
14f28187 | 1438 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1439 | goto end; |
1440 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
2ece7dd0 | 1441 | BT_COMP_LOGE("get_new_streams error"); |
7cdc2bab MD |
1442 | goto error; |
1443 | default: | |
2ece7dd0 | 1444 | BT_COMP_LOGE("Unknown return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1445 | goto error; |
1446 | } | |
1447 | ||
1448 | if (receive_streams(session, streams_count)) { | |
1449 | goto error; | |
1450 | } | |
1451 | end: | |
1452 | return status; | |
1453 | ||
1454 | error: | |
9b4f9b42 | 1455 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1456 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1457 | } else { |
14f28187 | 1458 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1459 | } |
7cdc2bab MD |
1460 | return status; |
1461 | } | |
1462 | ||
1463 | BT_HIDDEN | |
14f28187 FD |
1464 | struct live_viewer_connection *live_viewer_connection_create( |
1465 | const char *url, bool in_query, | |
550004b4 PP |
1466 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1467 | bt_logging_level log_level) | |
7cdc2bab | 1468 | { |
14f28187 | 1469 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1470 | |
14f28187 | 1471 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1472 | |
550004b4 | 1473 | if (bt_socket_init(log_level) != 0) { |
1cb3cdd7 MJ |
1474 | goto error; |
1475 | } | |
1476 | ||
550004b4 PP |
1477 | viewer_connection->log_level = log_level; |
1478 | ||
1479 | if (lttng_live_msg_iter) { | |
1480 | viewer_connection->self_comp = lttng_live_msg_iter->self_comp; | |
1481 | } | |
1482 | ||
14f28187 | 1483 | bt_object_init_shared(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1484 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1485 | viewer_connection->port = -1; |
14f28187 FD |
1486 | viewer_connection->in_query = in_query; |
1487 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1488 | viewer_connection->url = g_string_new(url); |
1489 | if (!viewer_connection->url) { | |
1490 | goto error; | |
1491 | } | |
1492 | ||
2ece7dd0 | 1493 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab MD |
1494 | if (lttng_live_connect_viewer(viewer_connection)) { |
1495 | goto error_report; | |
1496 | } | |
2ece7dd0 | 1497 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1498 | return viewer_connection; |
1499 | ||
1500 | error_report: | |
2ece7dd0 | 1501 | BT_COMP_LOGW("Failure to establish connection to url \"%s\"", url); |
7cdc2bab | 1502 | error: |
2f767475 PP |
1503 | if (viewer_connection) { |
1504 | live_viewer_connection_destroy(viewer_connection); | |
1505 | } | |
1506 | ||
7cdc2bab MD |
1507 | return NULL; |
1508 | } | |
1509 | ||
1510 | BT_HIDDEN | |
14f28187 FD |
1511 | void live_viewer_connection_destroy( |
1512 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1513 | { |
2ece7dd0 | 1514 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab | 1515 | lttng_live_disconnect_viewer(viewer_connection); |
2f767475 PP |
1516 | if (viewer_connection->url) { |
1517 | g_string_free(viewer_connection->url, true); | |
1518 | } | |
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 | } |