Commit | Line | Data |
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7cdc2bab | 1 | /* |
bb18709b | 2 | * Copyright 2019 - Francis Deslauriers <francis.deslauriers@efficios.com> |
7cdc2bab MD |
3 | * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
5278d5ba | 24 | #define BT_COMP_LOG_SELF_COMP (viewer_connection->self_comp) |
1c0ceb65 | 25 | #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level) |
b03487ab | 26 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER" |
3fa1b6a3 | 27 | #include "logging/comp-logging.h" |
020bc26f | 28 | |
28fb42b4 FD |
29 | #include <fcntl.h> |
30 | #include <stdbool.h> | |
7cdc2bab | 31 | #include <stdint.h> |
28fb42b4 | 32 | #include <stdio.h> |
7cdc2bab | 33 | #include <stdlib.h> |
28fb42b4 | 34 | #include <sys/types.h> |
7cdc2bab | 35 | #include <unistd.h> |
28fb42b4 | 36 | |
7cdc2bab | 37 | #include <glib.h> |
7cdc2bab | 38 | |
57952005 MJ |
39 | #include "compat/socket.h" |
40 | #include "compat/endian.h" | |
41 | #include "compat/compiler.h" | |
42 | #include "common/common.h" | |
71c5da58 | 43 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 44 | |
bb18709b | 45 | #include "lttng-live.h" |
7cdc2bab MD |
46 | #include "viewer-connection.h" |
47 | #include "lttng-viewer-abi.h" | |
48 | #include "data-stream.h" | |
49 | #include "metadata.h" | |
50 | ||
8dd99d00 FD |
51 | #define viewer_handle_send_recv_status(_self_comp, _self_comp_class, \ |
52 | _status, _action, _msg_str) \ | |
53 | do { \ | |
54 | switch (_status) { \ | |
55 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: \ | |
56 | break; \ | |
57 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: \ | |
58 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, \ | |
59 | _self_comp_class, "Error " _action " " _msg_str); \ | |
60 | break; \ | |
61 | default: \ | |
62 | bt_common_abort(); \ | |
63 | } \ | |
64 | } while (0) | |
65 | ||
66 | #define viewer_handle_send_status(_self_comp, _self_comp_class, _status, _msg_str) \ | |
67 | viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \ | |
68 | "sending", _msg_str) | |
69 | ||
70 | #define viewer_handle_recv_status(_self_comp, _self_comp_class, _status, _msg_str) \ | |
71 | viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \ | |
72 | "receiving", _msg_str) | |
73 | ||
74 | #define LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(_self_comp, \ | |
75 | _self_comp_class, _msg, _fmt, ...) \ | |
76 | do { \ | |
77 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, _self_comp_class, \ | |
78 | _msg ": %s" _fmt, bt_socket_errormsg(), ##__VA_ARGS__); \ | |
79 | } while (0) | |
80 | ||
81 | static inline | |
82 | enum lttng_live_iterator_status viewer_status_to_live_iterator_status( | |
83 | enum lttng_live_viewer_status viewer_status) | |
84 | { | |
85 | switch (viewer_status) { | |
86 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
87 | return LTTNG_LIVE_ITERATOR_STATUS_OK; | |
88 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
89 | return LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
90 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
91 | return LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
92 | default: | |
93 | bt_common_abort(); | |
94 | } | |
95 | } | |
96 | ||
97 | static inline | |
98 | enum ctf_msg_iter_medium_status viewer_status_to_ctf_msg_iter_medium_status( | |
99 | enum lttng_live_viewer_status viewer_status) | |
100 | { | |
101 | switch (viewer_status) { | |
102 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
103 | return CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
104 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
105 | return CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
106 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
107 | return CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
108 | default: | |
109 | bt_common_abort(); | |
110 | } | |
111 | } | |
112 | ||
da1e658a FD |
113 | static inline |
114 | void viewer_connection_close_socket( | |
115 | struct live_viewer_connection *viewer_connection) | |
116 | { | |
117 | bt_self_component_class *self_comp_class = | |
118 | viewer_connection->self_comp_class; | |
119 | bt_self_component *self_comp = | |
120 | viewer_connection->self_comp; | |
121 | int ret = bt_socket_close(viewer_connection->control_sock); | |
122 | if (ret == -1) { | |
123 | BT_COMP_OR_COMP_CLASS_LOGW_ERRNO( | |
124 | self_comp, self_comp_class, | |
125 | "Error closing viewer connection socket: ", "."); | |
126 | } | |
127 | ||
128 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
129 | } | |
130 | ||
8dd99d00 FD |
131 | /* |
132 | * This function receives a message from the Relay daemon. | |
133 | * If it received the entire message, it returns _OK, | |
134 | * If it's interrupted, it returns _INTERRUPTED, | |
135 | * otherwise, it returns _ERROR. | |
136 | */ | |
bb18709b | 137 | static |
8dd99d00 FD |
138 | enum lttng_live_viewer_status lttng_live_recv( |
139 | struct live_viewer_connection *viewer_connection, | |
4c66436f | 140 | void *buf, size_t len) |
7cdc2bab | 141 | { |
8dd99d00 FD |
142 | ssize_t received; |
143 | bt_self_component_class *self_comp_class = | |
144 | viewer_connection->self_comp_class; | |
145 | bt_self_component *self_comp = | |
146 | viewer_connection->self_comp; | |
147 | size_t total_received = 0, to_receive = len; | |
bb18709b FD |
148 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
149 | viewer_connection->lttng_live_msg_iter; | |
8dd99d00 | 150 | enum lttng_live_viewer_status status; |
a2147eb2 | 151 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab | 152 | |
8dd99d00 FD |
153 | /* |
154 | * Receive a message from the Relay. | |
155 | */ | |
7cdc2bab | 156 | do { |
8dd99d00 FD |
157 | received = bt_socket_recv(sock, buf + total_received, to_receive, 0); |
158 | if (received == BT_SOCKET_ERROR) { | |
159 | if (bt_socket_interrupted()) { | |
160 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
161 | /* | |
162 | * This interruption was due to a | |
163 | * SIGINT and the graph is being torn | |
164 | * down. | |
165 | */ | |
166 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
167 | lttng_live_msg_iter->was_interrupted = true; | |
168 | goto end; | |
169 | } else { | |
170 | /* | |
171 | * A signal was received, but the graph | |
172 | * is not being torn down. Carry on. | |
173 | */ | |
174 | continue; | |
175 | } | |
4c66436f | 176 | } else { |
8dd99d00 | 177 | /* |
da1e658a FD |
178 | * For any other types of socket error, close |
179 | * the socket and return an error. | |
8dd99d00 FD |
180 | */ |
181 | LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO( | |
182 | self_comp, self_comp_class, | |
183 | "Error receiving from Relay", "."); | |
da1e658a FD |
184 | |
185 | viewer_connection_close_socket(viewer_connection); | |
8dd99d00 FD |
186 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
187 | goto end; | |
4c66436f | 188 | } |
8dd99d00 FD |
189 | } else if (received == 0) { |
190 | /* | |
191 | * The recv() call returned 0. This means the | |
192 | * connection was orderly shutdown from the other peer. | |
193 | * If that happens when we are trying to receive | |
194 | * a message from it, it means something when wrong. | |
da1e658a | 195 | * Close the socket and return an error. |
8dd99d00 | 196 | */ |
8dd99d00 FD |
197 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
198 | self_comp_class, "Remote side has closed connection"); | |
da1e658a FD |
199 | viewer_connection_close_socket(viewer_connection); |
200 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
8dd99d00 | 201 | goto end; |
4c66436f | 202 | } |
b4a5dfd9 | 203 | |
8dd99d00 FD |
204 | BT_ASSERT(received <= to_receive); |
205 | total_received += received; | |
206 | to_receive -= received; | |
b4a5dfd9 | 207 | |
8dd99d00 FD |
208 | } while (to_receive > 0); |
209 | ||
210 | BT_ASSERT(total_received == len); | |
211 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
212 | ||
213 | end: | |
214 | return status; | |
7cdc2bab MD |
215 | } |
216 | ||
8dd99d00 FD |
217 | /* |
218 | * This function sends a message to the Relay daemon. | |
219 | * If it send the message, it returns _OK, | |
220 | * If it's interrupted, it returns _INTERRUPTED, | |
221 | * otherwise, it returns _ERROR. | |
222 | */ | |
bb18709b | 223 | static |
8dd99d00 FD |
224 | enum lttng_live_viewer_status lttng_live_send( |
225 | struct live_viewer_connection *viewer_connection, | |
4c66436f | 226 | const void *buf, size_t len) |
7cdc2bab | 227 | { |
8dd99d00 FD |
228 | enum lttng_live_viewer_status status; |
229 | bt_self_component_class *self_comp_class = | |
230 | viewer_connection->self_comp_class; | |
231 | bt_self_component *self_comp = | |
232 | viewer_connection->self_comp; | |
bb18709b FD |
233 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
234 | viewer_connection->lttng_live_msg_iter; | |
a2147eb2 | 235 | BT_SOCKET sock = viewer_connection->control_sock; |
8dd99d00 FD |
236 | size_t to_send = len; |
237 | ssize_t total_sent = 0; | |
238 | ||
239 | do { | |
240 | ssize_t sent = bt_socket_send_nosigpipe(sock, buf + total_sent, | |
241 | to_send); | |
242 | if (sent == BT_SOCKET_ERROR) { | |
243 | if (bt_socket_interrupted()) { | |
244 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
245 | /* | |
246 | * This interruption was a SIGINT and | |
247 | * the graph is being teared down. | |
248 | */ | |
249 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
250 | lttng_live_msg_iter->was_interrupted = true; | |
251 | goto end; | |
252 | } else { | |
253 | /* | |
254 | * A signal was received, but the graph | |
255 | * is not being teared down. Carry on. | |
256 | */ | |
257 | continue; | |
258 | } | |
4c66436f | 259 | } else { |
8dd99d00 | 260 | /* |
da1e658a FD |
261 | * For any other types of socket error, close |
262 | * the socket and return an error. | |
8dd99d00 FD |
263 | */ |
264 | LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO( | |
265 | self_comp, self_comp_class, | |
266 | "Error sending to Relay", "."); | |
da1e658a FD |
267 | |
268 | viewer_connection_close_socket(viewer_connection); | |
8dd99d00 FD |
269 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
270 | goto end; | |
4c66436f | 271 | } |
4c66436f | 272 | } |
8dd99d00 FD |
273 | |
274 | BT_ASSERT(sent <= to_send); | |
275 | total_sent += sent; | |
276 | to_send -= sent; | |
277 | ||
278 | } while (to_send > 0); | |
279 | ||
280 | BT_ASSERT(total_sent == len); | |
281 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
282 | ||
283 | end: | |
284 | return status; | |
7cdc2bab MD |
285 | } |
286 | ||
bb18709b FD |
287 | static |
288 | int parse_url(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 289 | { |
94b828f3 | 290 | char error_buf[256] = { 0 }; |
f6e2a9d2 FD |
291 | bt_self_component *self_comp = viewer_connection->self_comp; |
292 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; | |
94b828f3 MD |
293 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; |
294 | int ret = -1; | |
7cdc2bab | 295 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
296 | |
297 | if (!path) { | |
298 | goto end; | |
299 | } | |
7cdc2bab | 300 | |
0b6986b4 FD |
301 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, error_buf, |
302 | sizeof(error_buf)); | |
94b828f3 | 303 | if (!lttng_live_url_parts.proto) { |
f6e2a9d2 FD |
304 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
305 | self_comp_class,"Invalid LTTng live URL format: %s", | |
306 | error_buf); | |
7cdc2bab MD |
307 | goto end; |
308 | } | |
f555be5d FD |
309 | viewer_connection->proto = lttng_live_url_parts.proto; |
310 | lttng_live_url_parts.proto = NULL; | |
7cdc2bab | 311 | |
0b6986b4 | 312 | viewer_connection->relay_hostname = lttng_live_url_parts.hostname; |
94b828f3 MD |
313 | lttng_live_url_parts.hostname = NULL; |
314 | ||
315 | if (lttng_live_url_parts.port >= 0) { | |
316 | viewer_connection->port = lttng_live_url_parts.port; | |
317 | } else { | |
7cdc2bab MD |
318 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
319 | } | |
320 | ||
0b6986b4 | 321 | viewer_connection->target_hostname = lttng_live_url_parts.target_hostname; |
94b828f3 MD |
322 | lttng_live_url_parts.target_hostname = NULL; |
323 | ||
324 | if (lttng_live_url_parts.session_name) { | |
0b6986b4 | 325 | viewer_connection->session_name = lttng_live_url_parts.session_name; |
94b828f3 | 326 | lttng_live_url_parts.session_name = NULL; |
7cdc2bab MD |
327 | } |
328 | ||
7cdc2bab MD |
329 | ret = 0; |
330 | ||
331 | end: | |
94b828f3 | 332 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
333 | return ret; |
334 | } | |
335 | ||
bb18709b | 336 | static |
8dd99d00 FD |
337 | enum lttng_live_viewer_status lttng_live_handshake( |
338 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
339 | { |
340 | struct lttng_viewer_cmd cmd; | |
341 | struct lttng_viewer_connect connect; | |
8dd99d00 | 342 | enum lttng_live_viewer_status status; |
f6e2a9d2 FD |
343 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
344 | bt_self_component *self_comp = viewer_connection->self_comp; | |
02b23da7 JR |
345 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
346 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 347 | |
f555be5d FD |
348 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
349 | "Handshaking with the Relay: " | |
350 | "major-version=%u, minor-version=%u", | |
351 | LTTNG_LIVE_MAJOR, LTTNG_LIVE_MINOR); | |
352 | ||
7cdc2bab MD |
353 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); |
354 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
355 | cmd.cmd_version = htobe32(0); | |
356 | ||
357 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
358 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
359 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
360 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
361 | ||
02b23da7 JR |
362 | /* |
363 | * Merge the cmd and connection request to prevent a write-write | |
364 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
365 | * second write to be performed quickly in presence of Nagle's algorithm | |
366 | */ | |
367 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
368 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
7cdc2bab | 369 | |
8dd99d00 FD |
370 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
371 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
372 | viewer_handle_send_status(self_comp, self_comp_class, | |
373 | status, "viewer connect command"); | |
374 | goto end; | |
7cdc2bab | 375 | } |
8dd99d00 FD |
376 | |
377 | status = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); | |
378 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
379 | viewer_handle_recv_status(self_comp, self_comp_class, | |
380 | status, "viewer connect reply"); | |
381 | goto end; | |
7cdc2bab | 382 | } |
7cdc2bab | 383 | |
f555be5d FD |
384 | BT_COMP_OR_COMP_CLASS_LOGI(self_comp, self_comp_class, |
385 | "Received viewer session ID : %" PRIu64, | |
386 | (uint64_t) be64toh(connect.viewer_session_id)); | |
387 | BT_COMP_OR_COMP_CLASS_LOGI(self_comp, self_comp_class, | |
388 | "Relayd version : %u.%u", be32toh(connect.major), | |
389 | be32toh(connect.minor)); | |
7cdc2bab MD |
390 | |
391 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
f6e2a9d2 FD |
392 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
393 | self_comp_class, "Incompatible lttng-relayd protocol"); | |
8dd99d00 FD |
394 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
395 | goto end; | |
7cdc2bab MD |
396 | } |
397 | /* Use the smallest protocol version implemented. */ | |
398 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
399 | viewer_connection->minor = be32toh(connect.minor); | |
400 | } else { | |
401 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
402 | } | |
403 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
7cdc2bab | 404 | |
8dd99d00 FD |
405 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
406 | ||
407 | goto end; | |
408 | ||
409 | end: | |
410 | return status; | |
7cdc2bab MD |
411 | } |
412 | ||
bb18709b | 413 | static |
8dd99d00 | 414 | enum lttng_live_viewer_status lttng_live_connect_viewer( |
118fe47c | 415 | struct live_viewer_connection *viewer_connection) |
7cdc2bab MD |
416 | { |
417 | struct hostent *host; | |
418 | struct sockaddr_in server_addr; | |
8dd99d00 | 419 | enum lttng_live_viewer_status status; |
f6e2a9d2 FD |
420 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
421 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
422 | |
423 | if (parse_url(viewer_connection)) { | |
f6e2a9d2 FD |
424 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
425 | self_comp_class, "Failed to parse URL"); | |
8dd99d00 | 426 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
427 | goto error; |
428 | } | |
429 | ||
f555be5d FD |
430 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
431 | "Connecting to hostname : %s, port : %d, " | |
432 | "target hostname : %s, session name : %s, proto : %s", | |
433 | viewer_connection->relay_hostname->str, | |
434 | viewer_connection->port, | |
435 | !viewer_connection->target_hostname ? | |
436 | "<none>" : viewer_connection->target_hostname->str, | |
437 | !viewer_connection->session_name ? | |
438 | "<none>" : viewer_connection->session_name->str, | |
439 | viewer_connection->proto->str); | |
440 | ||
94b828f3 | 441 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 442 | if (!host) { |
f6e2a9d2 FD |
443 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
444 | self_comp_class, "Cannot lookup hostname: hostname=\"%s\"", | |
94b828f3 | 445 | viewer_connection->relay_hostname->str); |
8dd99d00 | 446 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
447 | goto error; |
448 | } | |
449 | ||
a2147eb2 | 450 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
f6e2a9d2 FD |
451 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
452 | self_comp_class, "Socket creation failed: %s", bt_socket_errormsg()); | |
8dd99d00 | 453 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
454 | goto error; |
455 | } | |
456 | ||
457 | server_addr.sin_family = AF_INET; | |
458 | server_addr.sin_port = htons(viewer_connection->port); | |
459 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
460 | memset(&(server_addr.sin_zero), 0, 8); | |
461 | ||
462 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
a2147eb2 | 463 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
f6e2a9d2 FD |
464 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
465 | self_comp_class, "Connection failed: %s", | |
466 | bt_socket_errormsg()); | |
8dd99d00 | 467 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
468 | goto error; |
469 | } | |
8dd99d00 FD |
470 | |
471 | status = lttng_live_handshake(viewer_connection); | |
472 | ||
473 | /* | |
474 | * Only print error and append cause in case of error. not in case of | |
475 | * interruption. | |
476 | */ | |
477 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 FD |
478 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
479 | self_comp_class, "Viewer handshake failed"); | |
7cdc2bab | 480 | goto error; |
8dd99d00 FD |
481 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
482 | goto end; | |
7cdc2bab MD |
483 | } |
484 | ||
8dd99d00 | 485 | goto end; |
7cdc2bab MD |
486 | |
487 | error: | |
a2147eb2 MJ |
488 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
489 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
f555be5d FD |
490 | BT_COMP_OR_COMP_CLASS_LOGW(self_comp, self_comp_class, |
491 | "Error closing socket: %s.", bt_socket_errormsg()); | |
7cdc2bab MD |
492 | } |
493 | } | |
a2147eb2 | 494 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
8dd99d00 FD |
495 | end: |
496 | return status; | |
7cdc2bab MD |
497 | } |
498 | ||
bb18709b FD |
499 | static |
500 | void lttng_live_disconnect_viewer( | |
501 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 502 | { |
f555be5d FD |
503 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
504 | bt_self_component *self_comp = viewer_connection->self_comp; | |
505 | ||
a2147eb2 | 506 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
507 | return; |
508 | } | |
a2147eb2 | 509 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
f555be5d FD |
510 | BT_COMP_OR_COMP_CLASS_LOGW(self_comp, self_comp_class, |
511 | "Error closing socket: %s", bt_socket_errormsg()); | |
a2147eb2 | 512 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
513 | } |
514 | } | |
515 | ||
7cdc2bab | 516 | static |
bb18709b | 517 | int list_update_session(bt_value *results, |
7cdc2bab | 518 | const struct lttng_viewer_session *session, |
1c0ceb65 | 519 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 520 | { |
f6e2a9d2 FD |
521 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
522 | bt_self_component *self_comp = viewer_connection->self_comp; | |
b602018b FD |
523 | int ret = 0; |
524 | uint64_t i, len; | |
8eee8ea2 PP |
525 | bt_value *map = NULL; |
526 | bt_value *hostname = NULL; | |
527 | bt_value *session_name = NULL; | |
528 | bt_value *btval = NULL; | |
7cdc2bab MD |
529 | bool found = false; |
530 | ||
1270d0e9 | 531 | len = bt_value_array_get_length(results); |
7cdc2bab MD |
532 | for (i = 0; i < len; i++) { |
533 | const char *hostname_str = NULL; | |
534 | const char *session_name_str = NULL; | |
535 | ||
b602018b | 536 | map = bt_value_array_borrow_element_by_index(results, i); |
bb18709b | 537 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 538 | if (!hostname) { |
f6e2a9d2 FD |
539 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
540 | self_comp_class, | |
541 | "Error borrowing \"target-hostname\" entry."); | |
bb18709b | 542 | ret = -1; |
7cdc2bab MD |
543 | goto end; |
544 | } | |
bb18709b | 545 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 546 | if (!session_name) { |
f6e2a9d2 FD |
547 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
548 | self_comp_class, | |
549 | "Error borrowing \"session-name\" entry."); | |
bb18709b | 550 | ret = -1; |
7cdc2bab MD |
551 | goto end; |
552 | } | |
b5cdc106 PP |
553 | hostname_str = bt_value_string_get(hostname); |
554 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 555 | |
acfa8112 PP |
556 | if (strcmp(session->hostname, hostname_str) == 0 |
557 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
558 | int64_t val; |
559 | uint32_t streams = be32toh(session->streams); | |
560 | uint32_t clients = be32toh(session->clients); | |
561 | ||
562 | found = true; | |
563 | ||
bb18709b | 564 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 565 | if (!btval) { |
f6e2a9d2 FD |
566 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
567 | self_comp, self_comp_class, | |
568 | "Error borrowing \"stream-count\" entry."); | |
bb18709b | 569 | ret = -1; |
7cdc2bab MD |
570 | goto end; |
571 | } | |
9d9daa04 | 572 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
573 | /* sum */ |
574 | val += streams; | |
9d9daa04 | 575 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 576 | |
bb18709b | 577 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 578 | if (!btval) { |
f6e2a9d2 FD |
579 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
580 | self_comp, self_comp_class, | |
581 | "Error borrowing \"client-count\" entry."); | |
bb18709b | 582 | ret = -1; |
7cdc2bab MD |
583 | goto end; |
584 | } | |
9d9daa04 | 585 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 586 | /* max */ |
85e7137b | 587 | val = bt_max_t(int64_t, clients, val); |
9d9daa04 | 588 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
589 | } |
590 | ||
7cdc2bab MD |
591 | if (found) { |
592 | break; | |
593 | } | |
594 | } | |
595 | end: | |
7cdc2bab MD |
596 | *_found = found; |
597 | return ret; | |
598 | } | |
599 | ||
600 | static | |
bb18709b | 601 | int list_append_session(bt_value *results, |
7cdc2bab | 602 | GString *base_url, |
1c0ceb65 PP |
603 | const struct lttng_viewer_session *session, |
604 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 605 | { |
bb18709b | 606 | int ret = 0; |
f6e2a9d2 | 607 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
fb25b9e3 PP |
608 | bt_value_map_insert_entry_status insert_status; |
609 | bt_value_array_append_element_status append_status; | |
8eee8ea2 | 610 | bt_value *map = NULL; |
7cdc2bab MD |
611 | GString *url = NULL; |
612 | bool found = false; | |
613 | ||
614 | /* | |
615 | * If the session already exists, add the stream count to it, | |
616 | * and do max of client counts. | |
617 | */ | |
1c0ceb65 | 618 | ret = list_update_session(results, session, &found, viewer_connection); |
bb18709b | 619 | if (ret || found) { |
7cdc2bab MD |
620 | goto end; |
621 | } | |
622 | ||
bb18709b | 623 | map = bt_value_map_create(); |
7cdc2bab | 624 | if (!map) { |
f6e2a9d2 FD |
625 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
626 | "Error creating map value."); | |
bb18709b | 627 | ret = -1; |
7cdc2bab MD |
628 | goto end; |
629 | } | |
630 | ||
631 | if (base_url->len < 1) { | |
f6e2a9d2 FD |
632 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
633 | "Error: base_url length smaller than 1."); | |
bb18709b | 634 | ret = -1; |
7cdc2bab MD |
635 | goto end; |
636 | } | |
637 | /* | |
638 | * key = "url", | |
639 | * value = <string>, | |
640 | */ | |
641 | url = g_string_new(base_url->str); | |
642 | g_string_append(url, "/host/"); | |
643 | g_string_append(url, session->hostname); | |
644 | g_string_append_c(url, '/'); | |
645 | g_string_append(url, session->session_name); | |
646 | ||
fb25b9e3 PP |
647 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
648 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
f6e2a9d2 FD |
649 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
650 | "Error inserting \"url\" entry."); | |
bb18709b | 651 | ret = -1; |
7cdc2bab MD |
652 | goto end; |
653 | } | |
654 | ||
655 | /* | |
656 | * key = "target-hostname", | |
657 | * value = <string>, | |
658 | */ | |
fb25b9e3 | 659 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 660 | session->hostname); |
fb25b9e3 | 661 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
662 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
663 | "Error inserting \"target-hostname\" entry."); | |
bb18709b | 664 | ret = -1; |
7cdc2bab MD |
665 | goto end; |
666 | } | |
667 | ||
668 | /* | |
669 | * key = "session-name", | |
670 | * value = <string>, | |
671 | */ | |
fb25b9e3 | 672 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 673 | session->session_name); |
fb25b9e3 | 674 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
675 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
676 | "Error inserting \"session-name\" entry."); | |
bb18709b | 677 | ret = -1; |
7cdc2bab MD |
678 | goto end; |
679 | } | |
680 | ||
681 | /* | |
682 | * key = "timer-us", | |
683 | * value = <integer>, | |
684 | */ | |
685 | { | |
686 | uint32_t live_timer = be32toh(session->live_timer); | |
687 | ||
9d9daa04 | 688 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
68d9d039 | 689 | map, "timer-us", live_timer); |
fb25b9e3 | 690 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
691 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
692 | "Error inserting \"timer-us\" entry."); | |
bb18709b | 693 | ret = -1; |
7cdc2bab MD |
694 | goto end; |
695 | } | |
696 | } | |
697 | ||
698 | /* | |
699 | * key = "stream-count", | |
700 | * value = <integer>, | |
701 | */ | |
702 | { | |
703 | uint32_t streams = be32toh(session->streams); | |
704 | ||
9d9daa04 | 705 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
68d9d039 | 706 | "stream-count", streams); |
fb25b9e3 | 707 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
708 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
709 | "Error inserting \"stream-count\" entry."); | |
bb18709b | 710 | ret = -1; |
7cdc2bab MD |
711 | goto end; |
712 | } | |
713 | } | |
714 | ||
7cdc2bab MD |
715 | /* |
716 | * key = "client-count", | |
717 | * value = <integer>, | |
718 | */ | |
719 | { | |
720 | uint32_t clients = be32toh(session->clients); | |
721 | ||
9d9daa04 | 722 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
68d9d039 | 723 | "client-count", clients); |
fb25b9e3 | 724 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
725 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
726 | "Error inserting \"client-count\" entry."); | |
bb18709b | 727 | ret = -1; |
7cdc2bab MD |
728 | goto end; |
729 | } | |
730 | } | |
731 | ||
fb25b9e3 PP |
732 | append_status = bt_value_array_append_element(results, map); |
733 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
f6e2a9d2 FD |
734 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
735 | "Error appending map to results."); | |
bb18709b FD |
736 | ret = -1; |
737 | } | |
738 | ||
7cdc2bab MD |
739 | end: |
740 | if (url) { | |
bb18709b | 741 | g_string_free(url, true); |
7cdc2bab | 742 | } |
8c6884d9 | 743 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
744 | return ret; |
745 | } | |
746 | ||
747 | /* | |
748 | * Data structure returned: | |
749 | * | |
750 | * { | |
751 | * <array> = { | |
752 | * [n] = { | |
753 | * <map> = { | |
754 | * { | |
755 | * key = "url", | |
756 | * value = <string>, | |
757 | * }, | |
758 | * { | |
759 | * key = "target-hostname", | |
760 | * value = <string>, | |
761 | * }, | |
762 | * { | |
763 | * key = "session-name", | |
764 | * value = <string>, | |
765 | * }, | |
766 | * { | |
767 | * key = "timer-us", | |
768 | * value = <integer>, | |
769 | * }, | |
770 | * { | |
771 | * key = "stream-count", | |
772 | * value = <integer>, | |
773 | * }, | |
774 | * { | |
775 | * key = "client-count", | |
776 | * value = <integer>, | |
777 | * }, | |
778 | * }, | |
779 | * } | |
780 | * } | |
781 | */ | |
782 | ||
783 | BT_HIDDEN | |
fb25b9e3 | 784 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
bb18709b FD |
785 | struct live_viewer_connection *viewer_connection, |
786 | const bt_value **user_result) | |
7cdc2bab | 787 | { |
f6e2a9d2 | 788 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
fb25b9e3 PP |
789 | bt_component_class_query_method_status status = |
790 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
bb18709b | 791 | bt_value *result = NULL; |
8dd99d00 | 792 | enum lttng_live_viewer_status viewer_status; |
7cdc2bab MD |
793 | struct lttng_viewer_cmd cmd; |
794 | struct lttng_viewer_list_sessions list; | |
795 | uint32_t i, sessions_count; | |
7cdc2bab | 796 | |
bb18709b FD |
797 | result = bt_value_array_create(); |
798 | if (!result) { | |
f6e2a9d2 FD |
799 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
800 | "Error creating array"); | |
fb25b9e3 | 801 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
802 | goto error; |
803 | } | |
804 | ||
805 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
806 | cmd.data_size = htobe64((uint64_t) 0); | |
807 | cmd.cmd_version = htobe32(0); | |
808 | ||
8dd99d00 FD |
809 | viewer_status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
810 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 | 811 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
8dd99d00 | 812 | "Error sending list sessions command"); |
fb25b9e3 | 813 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 814 | goto error; |
8dd99d00 FD |
815 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
816 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
817 | goto error; | |
7cdc2bab | 818 | } |
7cdc2bab | 819 | |
8dd99d00 FD |
820 | viewer_status = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
821 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 | 822 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
8dd99d00 | 823 | "Error receiving session list"); |
fb25b9e3 | 824 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 825 | goto error; |
8dd99d00 FD |
826 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
827 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
7cdc2bab MD |
828 | goto error; |
829 | } | |
7cdc2bab MD |
830 | |
831 | sessions_count = be32toh(list.sessions_count); | |
832 | for (i = 0; i < sessions_count; i++) { | |
833 | struct lttng_viewer_session lsession; | |
834 | ||
8dd99d00 | 835 | viewer_status = lttng_live_recv(viewer_connection, &lsession, |
bb18709b | 836 | sizeof(lsession)); |
8dd99d00 | 837 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { |
f6e2a9d2 | 838 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
8dd99d00 | 839 | "Error receiving session:"); |
fb25b9e3 | 840 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 841 | goto error; |
8dd99d00 FD |
842 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
843 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
7cdc2bab MD |
844 | goto error; |
845 | } | |
8dd99d00 | 846 | |
7cdc2bab MD |
847 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
848 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
bb18709b | 849 | if (list_append_session(result, viewer_connection->url, |
1c0ceb65 | 850 | &lsession, viewer_connection)) { |
f6e2a9d2 FD |
851 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
852 | "Error appending session"); | |
fb25b9e3 | 853 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
854 | goto error; |
855 | } | |
856 | } | |
bb18709b FD |
857 | |
858 | *user_result = result; | |
7cdc2bab MD |
859 | goto end; |
860 | error: | |
bb18709b | 861 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 862 | end: |
bb18709b | 863 | return status; |
7cdc2bab MD |
864 | } |
865 | ||
866 | static | |
8dd99d00 FD |
867 | enum lttng_live_viewer_status lttng_live_query_session_ids( |
868 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
869 | { |
870 | struct lttng_viewer_cmd cmd; | |
871 | struct lttng_viewer_list_sessions list; | |
872 | struct lttng_viewer_session lsession; | |
873 | uint32_t i, sessions_count; | |
7cdc2bab | 874 | uint64_t session_id; |
8dd99d00 | 875 | enum lttng_live_viewer_status status; |
bb18709b | 876 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
877 | lttng_live_msg_iter->viewer_connection; |
878 | bt_self_component *self_comp = viewer_connection->self_comp; | |
8dd99d00 FD |
879 | bt_self_component_class *self_comp_class = |
880 | viewer_connection->self_comp_class; | |
7cdc2bab | 881 | |
f555be5d FD |
882 | BT_COMP_LOGD("Asking the Relay for the list of sessions"); |
883 | ||
7cdc2bab MD |
884 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); |
885 | cmd.data_size = htobe64((uint64_t) 0); | |
886 | cmd.cmd_version = htobe32(0); | |
887 | ||
8dd99d00 FD |
888 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
889 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
890 | viewer_handle_send_status(self_comp, self_comp_class, | |
891 | status, "list sessions command"); | |
892 | goto end; | |
7cdc2bab | 893 | } |
7cdc2bab | 894 | |
8dd99d00 FD |
895 | status = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
896 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
897 | viewer_handle_recv_status(self_comp, self_comp_class, | |
898 | status, "session list reply"); | |
899 | goto end; | |
7cdc2bab | 900 | } |
7cdc2bab MD |
901 | |
902 | sessions_count = be32toh(list.sessions_count); | |
903 | for (i = 0; i < sessions_count; i++) { | |
8dd99d00 FD |
904 | status = lttng_live_recv(viewer_connection, &lsession, |
905 | sizeof(lsession)); | |
906 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
907 | viewer_handle_recv_status(self_comp, self_comp_class, | |
908 | status, "session reply"); | |
909 | goto end; | |
7cdc2bab | 910 | } |
7cdc2bab MD |
911 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
912 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
913 | session_id = be64toh(lsession.id); | |
914 | ||
f555be5d FD |
915 | BT_COMP_LOGI("Adding session to internal list: " |
916 | "session-id=%" PRIu64 ", hostname=\"%s\", session-name=\"%s\"", | |
06994c71 MD |
917 | session_id, lsession.hostname, lsession.session_name); |
918 | ||
7cdc2bab | 919 | if ((strncmp(lsession.session_name, |
94b828f3 | 920 | viewer_connection->session_name->str, |
a2147eb2 | 921 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 922 | viewer_connection->target_hostname->str, |
a2147eb2 | 923 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
f555be5d | 924 | |
bb18709b | 925 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
926 | lsession.hostname, |
927 | lsession.session_name)) { | |
f6e2a9d2 FD |
928 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
929 | "Failed to add live session"); | |
8dd99d00 FD |
930 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
931 | goto end; | |
7cdc2bab MD |
932 | } |
933 | } | |
934 | } | |
935 | ||
8dd99d00 | 936 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 937 | |
8dd99d00 FD |
938 | end: |
939 | return status; | |
7cdc2bab MD |
940 | } |
941 | ||
942 | BT_HIDDEN | |
8dd99d00 | 943 | enum lttng_live_viewer_status lttng_live_create_viewer_session( |
bb18709b | 944 | struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
945 | { |
946 | struct lttng_viewer_cmd cmd; | |
947 | struct lttng_viewer_create_session_response resp; | |
8dd99d00 | 948 | enum lttng_live_viewer_status status; |
bb18709b | 949 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
950 | lttng_live_msg_iter->viewer_connection; |
951 | bt_self_component *self_comp = viewer_connection->self_comp; | |
8dd99d00 FD |
952 | bt_self_component_class *self_comp_class = |
953 | viewer_connection->self_comp_class; | |
7cdc2bab | 954 | |
f555be5d FD |
955 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
956 | "Creating a viewer session"); | |
957 | ||
7cdc2bab MD |
958 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); |
959 | cmd.data_size = htobe64((uint64_t) 0); | |
960 | cmd.cmd_version = htobe32(0); | |
961 | ||
8dd99d00 FD |
962 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
963 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
964 | viewer_handle_send_status(self_comp, self_comp_class, | |
965 | status, "create session command"); | |
966 | goto end; | |
7cdc2bab | 967 | } |
7cdc2bab | 968 | |
8dd99d00 FD |
969 | status = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
970 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
971 | viewer_handle_recv_status(self_comp, self_comp_class, | |
972 | status, "create session reply"); | |
973 | goto end; | |
7cdc2bab | 974 | } |
7cdc2bab MD |
975 | |
976 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
f6e2a9d2 FD |
977 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
978 | "Error creating viewer session"); | |
8dd99d00 FD |
979 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
980 | goto end; | |
7cdc2bab | 981 | } |
8dd99d00 FD |
982 | |
983 | status = lttng_live_query_session_ids(lttng_live_msg_iter); | |
984 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 FD |
985 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
986 | "Failed to query live viewer session ids"); | |
8dd99d00 FD |
987 | goto end; |
988 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
989 | goto end; | |
7cdc2bab MD |
990 | } |
991 | ||
8dd99d00 FD |
992 | end: |
993 | return status; | |
7cdc2bab MD |
994 | } |
995 | ||
996 | static | |
8dd99d00 | 997 | enum lttng_live_viewer_status receive_streams(struct lttng_live_session *session, |
2428e031 SM |
998 | uint32_t stream_count, |
999 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1000 | { |
7cdc2bab | 1001 | uint32_t i; |
bb18709b | 1002 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0b6986b4 | 1003 | session->lttng_live_msg_iter; |
8dd99d00 | 1004 | enum lttng_live_viewer_status status; |
bb18709b | 1005 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 1006 | lttng_live_msg_iter->viewer_connection; |
f6e2a9d2 | 1007 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 1008 | |
5278d5ba | 1009 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
1010 | for (i = 0; i < stream_count; i++) { |
1011 | struct lttng_viewer_stream stream; | |
1012 | struct lttng_live_stream_iterator *live_stream; | |
1013 | uint64_t stream_id; | |
1014 | uint64_t ctf_trace_id; | |
1015 | ||
8dd99d00 FD |
1016 | status = lttng_live_recv(viewer_connection, &stream, |
1017 | sizeof(stream)); | |
1018 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1019 | viewer_handle_recv_status(self_comp, NULL, | |
1020 | status, "stream reply"); | |
1021 | goto end; | |
7cdc2bab | 1022 | } |
7cdc2bab MD |
1023 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
1024 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
1025 | stream_id = be64toh(stream.id); | |
1026 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
1027 | ||
1028 | if (stream.metadata_flag) { | |
5278d5ba | 1029 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0b6986b4 | 1030 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 1031 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
1032 | ctf_trace_id, stream_id, |
1033 | stream.path_name)) { | |
f6e2a9d2 FD |
1034 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1035 | "Error creating metadata stream"); | |
8dd99d00 FD |
1036 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1037 | goto end; | |
7cdc2bab | 1038 | } |
b09a5592 | 1039 | session->lazy_stream_msg_init = true; |
7cdc2bab | 1040 | } else { |
5278d5ba | 1041 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0b6986b4 | 1042 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 1043 | live_stream = lttng_live_stream_iterator_create(session, |
2428e031 | 1044 | ctf_trace_id, stream_id, self_msg_iter); |
7cdc2bab | 1045 | if (!live_stream) { |
f6e2a9d2 FD |
1046 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1047 | "Error creating stream"); | |
8dd99d00 FD |
1048 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1049 | goto end; | |
7cdc2bab MD |
1050 | } |
1051 | } | |
1052 | } | |
8dd99d00 | 1053 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 1054 | |
8dd99d00 FD |
1055 | end: |
1056 | return status; | |
7cdc2bab MD |
1057 | } |
1058 | ||
1059 | BT_HIDDEN | |
118fe47c | 1060 | enum lttng_live_viewer_status lttng_live_session_attach( |
2428e031 SM |
1061 | struct lttng_live_session *session, |
1062 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab MD |
1063 | { |
1064 | struct lttng_viewer_cmd cmd; | |
8dd99d00 | 1065 | enum lttng_live_viewer_status status; |
7cdc2bab MD |
1066 | struct lttng_viewer_attach_session_request rq; |
1067 | struct lttng_viewer_attach_session_response rp; | |
0b6986b4 FD |
1068 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1069 | session->lttng_live_msg_iter; | |
bb18709b | 1070 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 1071 | lttng_live_msg_iter->viewer_connection; |
f6e2a9d2 | 1072 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab MD |
1073 | uint64_t session_id = session->id; |
1074 | uint32_t streams_count; | |
02b23da7 JR |
1075 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1076 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1077 | |
f555be5d FD |
1078 | BT_COMP_LOGD("Attaching to session: session-id=%"PRIu64, session_id); |
1079 | ||
7cdc2bab MD |
1080 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
1081 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1082 | cmd.cmd_version = htobe32(0); | |
1083 | ||
1084 | memset(&rq, 0, sizeof(rq)); | |
1085 | rq.session_id = htobe64(session_id); | |
1086 | // TODO: add cmd line parameter to select seek beginning | |
1087 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
1088 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
1089 | ||
02b23da7 JR |
1090 | /* |
1091 | * Merge the cmd and connection request to prevent a write-write | |
1092 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1093 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1094 | */ | |
1095 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1096 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1097 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1098 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1099 | viewer_handle_send_status(self_comp, NULL, | |
1100 | status, "attach session command"); | |
1101 | goto end; | |
7cdc2bab | 1102 | } |
7cdc2bab | 1103 | |
8dd99d00 FD |
1104 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1105 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1106 | viewer_handle_recv_status(self_comp, NULL, | |
1107 | status, "attach session reply"); | |
1108 | goto end; | |
7cdc2bab | 1109 | } |
7cdc2bab MD |
1110 | |
1111 | streams_count = be32toh(rp.streams_count); | |
1112 | switch(be32toh(rp.status)) { | |
1113 | case LTTNG_VIEWER_ATTACH_OK: | |
1114 | break; | |
1115 | case LTTNG_VIEWER_ATTACH_UNK: | |
f6e2a9d2 FD |
1116 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1117 | "Session id %" PRIu64 " is unknown", session_id); | |
8dd99d00 FD |
1118 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1119 | goto end; | |
7cdc2bab | 1120 | case LTTNG_VIEWER_ATTACH_ALREADY: |
f6e2a9d2 FD |
1121 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1122 | "There is already a viewer attached to this session"); | |
8dd99d00 FD |
1123 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1124 | goto end; | |
7cdc2bab | 1125 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: |
f6e2a9d2 | 1126 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Not a live session"); |
8dd99d00 FD |
1127 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1128 | goto end; | |
7cdc2bab | 1129 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: |
f6e2a9d2 | 1130 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Wrong seek parameter"); |
8dd99d00 FD |
1131 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1132 | goto end; | |
7cdc2bab | 1133 | default: |
f6e2a9d2 FD |
1134 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1135 | "Unknown attach return code %u", be32toh(rp.status)); | |
8dd99d00 FD |
1136 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1137 | goto end; | |
7cdc2bab MD |
1138 | } |
1139 | ||
1140 | /* We receive the initial list of streams. */ | |
8dd99d00 FD |
1141 | status = receive_streams(session, streams_count, self_msg_iter); |
1142 | switch (status) { | |
1143 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
1144 | break; | |
1145 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
1146 | goto end; | |
1147 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
f6e2a9d2 | 1148 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams"); |
8dd99d00 FD |
1149 | goto end; |
1150 | default: | |
1151 | bt_common_abort(); | |
7cdc2bab MD |
1152 | } |
1153 | ||
1154 | session->attached = true; | |
1155 | session->new_streams_needed = false; | |
1156 | ||
477ede8e | 1157 | end: |
8dd99d00 | 1158 | return status; |
7cdc2bab MD |
1159 | } |
1160 | ||
1161 | BT_HIDDEN | |
118fe47c | 1162 | enum lttng_live_viewer_status lttng_live_session_detach( |
8dd99d00 | 1163 | struct lttng_live_session *session) |
7cdc2bab MD |
1164 | { |
1165 | struct lttng_viewer_cmd cmd; | |
8dd99d00 | 1166 | enum lttng_live_viewer_status status; |
7cdc2bab MD |
1167 | struct lttng_viewer_detach_session_request rq; |
1168 | struct lttng_viewer_detach_session_response rp; | |
0b6986b4 FD |
1169 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1170 | session->lttng_live_msg_iter; | |
8dd99d00 | 1171 | bt_self_component *self_comp = session->self_comp; |
bb18709b | 1172 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 1173 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 1174 | uint64_t session_id = session->id; |
02b23da7 JR |
1175 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1176 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1177 | |
da1e658a FD |
1178 | /* |
1179 | * The session might already be detached and the viewer socket might | |
1180 | * already been closed. This happens when calling this function when | |
1181 | * tearing down the graph after an error. | |
1182 | */ | |
1183 | if (!session->attached || viewer_connection->control_sock == BT_INVALID_SOCKET) { | |
7cdc2bab MD |
1184 | return 0; |
1185 | } | |
1186 | ||
1187 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
1188 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1189 | cmd.cmd_version = htobe32(0); | |
1190 | ||
1191 | memset(&rq, 0, sizeof(rq)); | |
1192 | rq.session_id = htobe64(session_id); | |
1193 | ||
02b23da7 JR |
1194 | /* |
1195 | * Merge the cmd and connection request to prevent a write-write | |
1196 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1197 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1198 | */ | |
1199 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1200 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1201 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1202 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1203 | viewer_handle_send_status(self_comp, NULL, | |
1204 | status, "detach session command"); | |
1205 | goto end; | |
7cdc2bab | 1206 | } |
7cdc2bab | 1207 | |
8dd99d00 FD |
1208 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1209 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1210 | viewer_handle_recv_status(self_comp, NULL, | |
1211 | status, "detach session reply"); | |
1212 | goto end; | |
7cdc2bab | 1213 | } |
7cdc2bab MD |
1214 | |
1215 | switch(be32toh(rp.status)) { | |
1216 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
1217 | break; | |
1218 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
5278d5ba | 1219 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
8dd99d00 FD |
1220 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1221 | goto end; | |
7cdc2bab | 1222 | case LTTNG_VIEWER_DETACH_SESSION_ERR: |
5278d5ba | 1223 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
8dd99d00 FD |
1224 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1225 | goto end; | |
7cdc2bab | 1226 | default: |
5278d5ba | 1227 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
8dd99d00 FD |
1228 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1229 | goto end; | |
7cdc2bab MD |
1230 | } |
1231 | ||
1232 | session->attached = false; | |
1233 | ||
8dd99d00 | 1234 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 1235 | |
8dd99d00 FD |
1236 | end: |
1237 | return status; | |
7cdc2bab MD |
1238 | } |
1239 | ||
1240 | BT_HIDDEN | |
f797424a FD |
1241 | enum lttng_live_get_one_metadata_status lttng_live_get_one_metadata_packet( |
1242 | struct lttng_live_trace *trace, FILE *fp, size_t *reply_len) | |
7cdc2bab MD |
1243 | { |
1244 | uint64_t len = 0; | |
8dd99d00 FD |
1245 | enum lttng_live_get_one_metadata_status status; |
1246 | enum lttng_live_viewer_status viewer_status; | |
7cdc2bab MD |
1247 | struct lttng_viewer_cmd cmd; |
1248 | struct lttng_viewer_get_metadata rq; | |
1249 | struct lttng_viewer_metadata_packet rp; | |
1f066b37 | 1250 | gchar *data = NULL; |
a480bf85 | 1251 | ssize_t writelen; |
7cdc2bab | 1252 | struct lttng_live_session *session = trace->session; |
0b6986b4 FD |
1253 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1254 | session->lttng_live_msg_iter; | |
7cdc2bab | 1255 | struct lttng_live_metadata *metadata = trace->metadata; |
bb18709b | 1256 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 1257 | lttng_live_msg_iter->viewer_connection; |
f6e2a9d2 | 1258 | bt_self_component *self_comp = viewer_connection->self_comp; |
02b23da7 JR |
1259 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1260 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1261 | |
f555be5d FD |
1262 | BT_COMP_LOGD("Requesting new metadata for trace: " |
1263 | "trace-id=%"PRIu64", metadata-stream-id=%"PRIu64, | |
1264 | trace->id, metadata->stream_id); | |
1265 | ||
7cdc2bab MD |
1266 | rq.stream_id = htobe64(metadata->stream_id); |
1267 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1268 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1269 | cmd.cmd_version = htobe32(0); | |
1270 | ||
02b23da7 JR |
1271 | /* |
1272 | * Merge the cmd and connection request to prevent a write-write | |
1273 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1274 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1275 | */ | |
1276 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1277 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1278 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1279 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1280 | viewer_handle_send_status(self_comp, NULL, | |
1281 | viewer_status, "get metadata command"); | |
1282 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1283 | goto end; | |
7cdc2bab | 1284 | } |
7cdc2bab | 1285 | |
8dd99d00 FD |
1286 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1287 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1288 | viewer_handle_recv_status(self_comp, NULL, | |
1289 | viewer_status, "get metadata reply"); | |
1290 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1291 | goto end; | |
7cdc2bab | 1292 | } |
7cdc2bab MD |
1293 | |
1294 | switch (be32toh(rp.status)) { | |
1295 | case LTTNG_VIEWER_METADATA_OK: | |
f6e2a9d2 | 1296 | BT_COMP_LOGD("Received get_metadata response: ok"); |
7cdc2bab MD |
1297 | break; |
1298 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
f797424a | 1299 | BT_COMP_LOGD("Received get_metadata response: no new"); |
8dd99d00 | 1300 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END; |
7cdc2bab MD |
1301 | goto end; |
1302 | case LTTNG_VIEWER_METADATA_ERR: | |
f797424a FD |
1303 | /* |
1304 | * The Relayd cannot find this stream id. Maybe its | |
1305 | * gone already. This can happen in short lived UST app | |
1306 | * in a per-pid session. | |
1307 | */ | |
1308 | BT_COMP_LOGD("Received get_metadata response: error"); | |
8dd99d00 | 1309 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED; |
f797424a | 1310 | goto end; |
7cdc2bab | 1311 | default: |
f6e2a9d2 FD |
1312 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1313 | "Received get_metadata response: unknown"); | |
8dd99d00 | 1314 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1f066b37 | 1315 | goto end; |
7cdc2bab MD |
1316 | } |
1317 | ||
1318 | len = be64toh(rp.len); | |
5278d5ba | 1319 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab | 1320 | if (len <= 0) { |
f6e2a9d2 FD |
1321 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1322 | "Erroneous response length"); | |
8dd99d00 | 1323 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1f066b37 | 1324 | goto end; |
7cdc2bab MD |
1325 | } |
1326 | ||
1f066b37 | 1327 | data = g_new0(gchar, len); |
7cdc2bab | 1328 | if (!data) { |
f6e2a9d2 FD |
1329 | BT_COMP_LOGE_APPEND_CAUSE_ERRNO(self_comp, |
1330 | "Failed to allocate data buffer", "."); | |
8dd99d00 | 1331 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1f066b37 | 1332 | goto end; |
7cdc2bab | 1333 | } |
8dd99d00 FD |
1334 | |
1335 | viewer_status = lttng_live_recv(viewer_connection, data, len); | |
1336 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1337 | viewer_handle_recv_status(self_comp, NULL, | |
1338 | viewer_status, "get metadata packet"); | |
1339 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1f066b37 | 1340 | goto end; |
7cdc2bab | 1341 | } |
7cdc2bab | 1342 | |
8dd99d00 FD |
1343 | /* |
1344 | * Write the metadata to the file handle. | |
1345 | */ | |
a480bf85 FD |
1346 | writelen = fwrite(data, sizeof(uint8_t), len, fp); |
1347 | if (writelen != len) { | |
f6e2a9d2 FD |
1348 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1349 | "Writing in the metadata file stream"); | |
8dd99d00 | 1350 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1f066b37 | 1351 | goto end; |
7cdc2bab | 1352 | } |
a480bf85 | 1353 | |
f797424a | 1354 | *reply_len = len; |
8dd99d00 | 1355 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK; |
f797424a | 1356 | |
f797424a | 1357 | end: |
1f066b37 | 1358 | g_free(data); |
8dd99d00 | 1359 | return status; |
7cdc2bab MD |
1360 | } |
1361 | ||
1362 | /* | |
1363 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1364 | */ | |
1365 | static | |
1366 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1367 | struct packet_index *pindex) | |
1368 | { | |
8b45963b PP |
1369 | BT_ASSERT(lindex); |
1370 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1371 | |
1372 | pindex->offset = be64toh(lindex->offset); | |
1373 | pindex->packet_size = be64toh(lindex->packet_size); | |
1374 | pindex->content_size = be64toh(lindex->content_size); | |
1375 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1376 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1377 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1378 | } | |
1379 | ||
118fe47c FD |
1380 | static |
1381 | void lttng_live_need_new_streams(struct lttng_live_msg_iter *lttng_live_msg_iter) | |
1382 | { | |
1383 | uint64_t session_idx; | |
1384 | ||
1385 | for (session_idx = 0; session_idx < lttng_live_msg_iter->sessions->len; | |
1386 | session_idx++) { | |
1387 | struct lttng_live_session *session = | |
1388 | g_ptr_array_index(lttng_live_msg_iter->sessions, session_idx); | |
1389 | session->new_streams_needed = true; | |
1390 | } | |
1391 | } | |
1392 | ||
7cdc2bab | 1393 | BT_HIDDEN |
bb18709b FD |
1394 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1395 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1396 | struct lttng_live_stream_iterator *stream, |
1397 | struct packet_index *index) | |
1398 | { | |
1399 | struct lttng_viewer_cmd cmd; | |
1400 | struct lttng_viewer_get_next_index rq; | |
8dd99d00 | 1401 | enum lttng_live_viewer_status viewer_status; |
7cdc2bab | 1402 | struct lttng_viewer_index rp; |
8dd99d00 | 1403 | enum lttng_live_iterator_status status; |
bb18709b | 1404 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
1405 | lttng_live_msg_iter->viewer_connection; |
1406 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1407 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1408 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1409 | char cmd_buf[cmd_buf_len]; | |
8dd99d00 | 1410 | uint32_t flags, rp_status; |
7cdc2bab | 1411 | |
f555be5d FD |
1412 | BT_COMP_LOGD("Requesting next index for stream: " |
1413 | "stream-id=%"PRIu64, stream->viewer_stream_id); | |
1414 | ||
7cdc2bab MD |
1415 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); |
1416 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1417 | cmd.cmd_version = htobe32(0); | |
1418 | ||
02b23da7 | 1419 | |
7cdc2bab MD |
1420 | memset(&rq, 0, sizeof(rq)); |
1421 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1422 | ||
02b23da7 JR |
1423 | /* |
1424 | * Merge the cmd and connection request to prevent a write-write | |
1425 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1426 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1427 | */ | |
1428 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1429 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1430 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1431 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1432 | viewer_handle_send_status(self_comp, NULL, | |
1433 | viewer_status, "get next index command"); | |
7cdc2bab MD |
1434 | goto error; |
1435 | } | |
7cdc2bab | 1436 | |
8dd99d00 FD |
1437 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1438 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1439 | viewer_handle_recv_status(self_comp, NULL, | |
1440 | viewer_status, "get next index reply"); | |
7cdc2bab MD |
1441 | goto error; |
1442 | } | |
7cdc2bab MD |
1443 | |
1444 | flags = be32toh(rp.flags); | |
8dd99d00 | 1445 | rp_status = be32toh(rp.status); |
7cdc2bab | 1446 | |
8dd99d00 | 1447 | switch (rp_status) { |
7cdc2bab MD |
1448 | case LTTNG_VIEWER_INDEX_INACTIVE: |
1449 | { | |
1450 | uint64_t ctf_stream_class_id; | |
1451 | ||
f6e2a9d2 | 1452 | BT_COMP_LOGD("Received get_next_index response: inactive"); |
7cdc2bab MD |
1453 | memset(index, 0, sizeof(struct packet_index)); |
1454 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
bb18709b | 1455 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1456 | ctf_stream_class_id = be64toh(rp.stream_id); |
1457 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1458 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1459 | ctf_stream_class_id); |
1460 | } else { | |
1461 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1462 | } | |
1463 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
8dd99d00 | 1464 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1465 | break; |
1466 | } | |
1467 | case LTTNG_VIEWER_INDEX_OK: | |
1468 | { | |
1469 | uint64_t ctf_stream_class_id; | |
1470 | ||
f6e2a9d2 | 1471 | BT_COMP_LOGD("Received get_next_index response: OK"); |
7cdc2bab MD |
1472 | lttng_index_to_packet_index(&rp, index); |
1473 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1474 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1475 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1476 | ctf_stream_class_id); |
1477 | } else { | |
1478 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1479 | } | |
1480 | ||
1481 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1482 | |
1483 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
f6e2a9d2 | 1484 | BT_COMP_LOGD("Received get_next_index response: new metadata needed"); |
d6e1f86b | 1485 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
7cdc2bab MD |
1486 | } |
1487 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
f6e2a9d2 | 1488 | BT_COMP_LOGD("Received get_next_index response: new streams needed"); |
bb18709b | 1489 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab | 1490 | } |
8dd99d00 | 1491 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1492 | break; |
1493 | } | |
1494 | case LTTNG_VIEWER_INDEX_RETRY: | |
f6e2a9d2 | 1495 | BT_COMP_LOGD("Received get_next_index response: retry"); |
7cdc2bab | 1496 | memset(index, 0, sizeof(struct packet_index)); |
7cdc2bab | 1497 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
8dd99d00 | 1498 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1499 | goto end; |
1500 | case LTTNG_VIEWER_INDEX_HUP: | |
f6e2a9d2 | 1501 | BT_COMP_LOGD("Received get_next_index response: stream hung up"); |
7cdc2bab MD |
1502 | memset(index, 0, sizeof(struct packet_index)); |
1503 | index->offset = EOF; | |
7cdc2bab | 1504 | stream->state = LTTNG_LIVE_STREAM_EOF; |
5b337d32 | 1505 | stream->has_stream_hung_up = true; |
8dd99d00 | 1506 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1507 | break; |
1508 | case LTTNG_VIEWER_INDEX_ERR: | |
f6e2a9d2 | 1509 | BT_COMP_LOGD("Received get_next_index response: error"); |
7cdc2bab MD |
1510 | memset(index, 0, sizeof(struct packet_index)); |
1511 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
8dd99d00 FD |
1512 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1513 | goto end; | |
7cdc2bab | 1514 | default: |
f6e2a9d2 | 1515 | BT_COMP_LOGD("Received get_next_index response: unknown value"); |
7cdc2bab MD |
1516 | memset(index, 0, sizeof(struct packet_index)); |
1517 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
8dd99d00 FD |
1518 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1519 | goto end; | |
7cdc2bab | 1520 | } |
8dd99d00 | 1521 | goto end; |
7cdc2bab MD |
1522 | |
1523 | error: | |
8dd99d00 FD |
1524 | status = viewer_status_to_live_iterator_status(viewer_status); |
1525 | end: | |
1526 | return status; | |
7cdc2bab MD |
1527 | } |
1528 | ||
1529 | BT_HIDDEN | |
5d452e1f | 1530 | enum ctf_msg_iter_medium_status lttng_live_get_stream_bytes( |
bb18709b FD |
1531 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1532 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1533 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1534 | { |
8dd99d00 FD |
1535 | enum ctf_msg_iter_medium_status status; |
1536 | enum lttng_live_viewer_status viewer_status; | |
0b6986b4 | 1537 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1538 | struct lttng_viewer_cmd cmd; |
1539 | struct lttng_viewer_get_packet rq; | |
bb18709b | 1540 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
1541 | lttng_live_msg_iter->viewer_connection; |
1542 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1543 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1544 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1545 | char cmd_buf[cmd_buf_len]; | |
8dd99d00 | 1546 | uint32_t flags, rp_status; |
7cdc2bab | 1547 | |
5278d5ba | 1548 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1549 | offset, req_len); |
1550 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1551 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1552 | cmd.cmd_version = htobe32(0); | |
1553 | ||
1554 | memset(&rq, 0, sizeof(rq)); | |
1555 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1556 | rq.offset = htobe64(offset); | |
1557 | rq.len = htobe32(req_len); | |
1558 | ||
02b23da7 JR |
1559 | /* |
1560 | * Merge the cmd and connection request to prevent a write-write | |
1561 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1562 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1563 | */ | |
1564 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1565 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1566 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1567 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1568 | viewer_handle_send_status(self_comp, NULL, | |
1569 | viewer_status, "get data packet command"); | |
7cdc2bab MD |
1570 | goto error; |
1571 | } | |
7cdc2bab | 1572 | |
8dd99d00 FD |
1573 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1574 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1575 | viewer_handle_recv_status(self_comp, NULL, | |
1576 | viewer_status, "get data packet reply"); | |
7cdc2bab MD |
1577 | goto error; |
1578 | } | |
1579 | ||
1580 | flags = be32toh(rp.flags); | |
8dd99d00 | 1581 | rp_status = be32toh(rp.status); |
7cdc2bab | 1582 | |
8dd99d00 | 1583 | switch (rp_status) { |
7cdc2bab MD |
1584 | case LTTNG_VIEWER_GET_PACKET_OK: |
1585 | req_len = be32toh(rp.len); | |
f6e2a9d2 FD |
1586 | BT_COMP_LOGD("Received get_data_packet response: Ok, " |
1587 | "packet size : %" PRIu64 "", req_len); | |
8dd99d00 | 1588 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
1589 | break; |
1590 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1591 | /* Unimplemented by relay daemon */ | |
f6e2a9d2 | 1592 | BT_COMP_LOGD("Received get_data_packet response: retry"); |
8dd99d00 | 1593 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1594 | goto end; |
1595 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1596 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
5278d5ba | 1597 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
d6e1f86b | 1598 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
7cdc2bab MD |
1599 | } |
1600 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
5278d5ba | 1601 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
bb18709b | 1602 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1603 | } |
1604 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1605 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
8dd99d00 | 1606 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1607 | goto end; |
1608 | } | |
f6e2a9d2 FD |
1609 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1610 | "Received get_data_packet response: error"); | |
8dd99d00 FD |
1611 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
1612 | goto end; | |
7cdc2bab | 1613 | case LTTNG_VIEWER_GET_PACKET_EOF: |
8dd99d00 | 1614 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1615 | goto end; |
1616 | default: | |
f6e2a9d2 FD |
1617 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1618 | "Received get_data_packet response: unknown"); | |
8dd99d00 | 1619 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
7cdc2bab MD |
1620 | goto error; |
1621 | } | |
1622 | ||
1623 | if (req_len == 0) { | |
8dd99d00 | 1624 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
7cdc2bab MD |
1625 | goto error; |
1626 | } | |
1627 | ||
8dd99d00 FD |
1628 | viewer_status = lttng_live_recv(viewer_connection, buf, req_len); |
1629 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1630 | viewer_handle_recv_status(self_comp, NULL, | |
1631 | viewer_status, "get data packet"); | |
7cdc2bab MD |
1632 | goto error; |
1633 | } | |
8dd99d00 | 1634 | *recv_len = req_len; |
7cdc2bab | 1635 | |
8dd99d00 FD |
1636 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
1637 | goto end; | |
7cdc2bab | 1638 | error: |
8dd99d00 FD |
1639 | |
1640 | status = viewer_status_to_ctf_msg_iter_medium_status(viewer_status); | |
1641 | end: | |
1642 | return status; | |
7cdc2bab MD |
1643 | } |
1644 | ||
1645 | /* | |
1646 | * Request new streams for a session. | |
1647 | */ | |
1648 | BT_HIDDEN | |
118fe47c | 1649 | enum lttng_live_iterator_status lttng_live_session_get_new_streams( |
2428e031 SM |
1650 | struct lttng_live_session *session, |
1651 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1652 | { |
bb18709b FD |
1653 | enum lttng_live_iterator_status status = |
1654 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1655 | struct lttng_viewer_cmd cmd; |
1656 | struct lttng_viewer_new_streams_request rq; | |
1657 | struct lttng_viewer_new_streams_response rp; | |
bb18709b FD |
1658 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1659 | session->lttng_live_msg_iter; | |
8dd99d00 | 1660 | enum lttng_live_viewer_status viewer_status; |
bb18709b FD |
1661 | struct live_viewer_connection *viewer_connection = |
1662 | lttng_live_msg_iter->viewer_connection; | |
f6e2a9d2 | 1663 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 1664 | uint32_t streams_count; |
02b23da7 JR |
1665 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1666 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1667 | |
1668 | if (!session->new_streams_needed) { | |
8dd99d00 FD |
1669 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1670 | goto end; | |
7cdc2bab MD |
1671 | } |
1672 | ||
f555be5d FD |
1673 | BT_COMP_LOGD("Requesting new streams for session: " |
1674 | "session-id=%"PRIu64, session->id); | |
1675 | ||
7cdc2bab MD |
1676 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); |
1677 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1678 | cmd.cmd_version = htobe32(0); | |
1679 | ||
1680 | memset(&rq, 0, sizeof(rq)); | |
1681 | rq.session_id = htobe64(session->id); | |
1682 | ||
02b23da7 JR |
1683 | /* |
1684 | * Merge the cmd and connection request to prevent a write-write | |
1685 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1686 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1687 | */ | |
1688 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1689 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1690 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1691 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1692 | viewer_handle_send_status(self_comp, NULL, | |
1693 | viewer_status, "get new streams command"); | |
1694 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1695 | goto end; | |
7cdc2bab | 1696 | } |
7cdc2bab | 1697 | |
8dd99d00 FD |
1698 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1699 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1700 | viewer_handle_recv_status(self_comp, NULL, | |
1701 | viewer_status, "get new streams reply"); | |
1702 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1703 | goto end; | |
7cdc2bab | 1704 | } |
7cdc2bab MD |
1705 | |
1706 | streams_count = be32toh(rp.streams_count); | |
1707 | ||
1708 | switch(be32toh(rp.status)) { | |
1709 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1710 | session->new_streams_needed = false; | |
1711 | break; | |
1712 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1713 | session->new_streams_needed = false; | |
1714 | goto end; | |
1715 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1716 | session->new_streams_needed = false; | |
1717 | session->closed = true; | |
bb18709b | 1718 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1719 | goto end; |
1720 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
f6e2a9d2 | 1721 | BT_COMP_LOGD("Received get_new_streams response: error"); |
8dd99d00 FD |
1722 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1723 | goto end; | |
7cdc2bab | 1724 | default: |
f6e2a9d2 FD |
1725 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1726 | "Received get_new_streams response: Unknown:" | |
1727 | "return code %u", be32toh(rp.status)); | |
8dd99d00 FD |
1728 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1729 | goto end; | |
7cdc2bab MD |
1730 | } |
1731 | ||
8dd99d00 FD |
1732 | viewer_status = receive_streams(session, streams_count, self_msg_iter); |
1733 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1734 | viewer_handle_recv_status(self_comp, NULL, | |
1735 | viewer_status, "new streams"); | |
1736 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1737 | goto end; | |
7cdc2bab | 1738 | } |
7cdc2bab | 1739 | |
8dd99d00 FD |
1740 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1741 | end: | |
7cdc2bab MD |
1742 | return status; |
1743 | } | |
1744 | ||
1745 | BT_HIDDEN | |
8dd99d00 | 1746 | enum lttng_live_viewer_status live_viewer_connection_create( |
f6e2a9d2 FD |
1747 | bt_self_component *self_comp, |
1748 | bt_self_component_class *self_comp_class, | |
8dd99d00 FD |
1749 | bt_logging_level log_level, |
1750 | const char *url, bool in_query, | |
1751 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1752 | struct live_viewer_connection **viewer) | |
7cdc2bab | 1753 | { |
bb18709b | 1754 | struct live_viewer_connection *viewer_connection; |
8dd99d00 | 1755 | enum lttng_live_viewer_status status; |
7cdc2bab | 1756 | |
bb18709b | 1757 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1758 | |
ca06281d | 1759 | if (bt_socket_init(log_level) != 0) { |
f6e2a9d2 FD |
1760 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1761 | self_comp_class, "Failed to init socket"); | |
8dd99d00 | 1762 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
a2147eb2 MJ |
1763 | goto error; |
1764 | } | |
1765 | ||
ca06281d PP |
1766 | viewer_connection->log_level = log_level; |
1767 | ||
f6e2a9d2 FD |
1768 | viewer_connection->self_comp = self_comp; |
1769 | viewer_connection->self_comp_class = self_comp_class; | |
ca06281d | 1770 | |
a2147eb2 | 1771 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1772 | viewer_connection->port = -1; |
bb18709b FD |
1773 | viewer_connection->in_query = in_query; |
1774 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1775 | viewer_connection->url = g_string_new(url); |
1776 | if (!viewer_connection->url) { | |
f6e2a9d2 FD |
1777 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1778 | self_comp_class, "Failed to allocate URL buffer"); | |
8dd99d00 | 1779 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
1780 | goto error; |
1781 | } | |
1782 | ||
f555be5d FD |
1783 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
1784 | "Establishing connection to url \"%s\"...", url); | |
8dd99d00 FD |
1785 | status = lttng_live_connect_viewer(viewer_connection); |
1786 | /* | |
1787 | * Only print error and append cause in case of error. not in case of | |
1788 | * interruption. | |
1789 | */ | |
1790 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 FD |
1791 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1792 | self_comp_class, "Failed to establish connection: " | |
1793 | "url=\"%s\"", url); | |
1794 | goto error; | |
8dd99d00 FD |
1795 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
1796 | goto error; | |
7cdc2bab | 1797 | } |
f555be5d FD |
1798 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
1799 | "Connection to url \"%s\" is established", url); | |
8dd99d00 FD |
1800 | |
1801 | *viewer = viewer_connection; | |
1802 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
1803 | goto end; | |
7cdc2bab | 1804 | |
7cdc2bab | 1805 | error: |
487e99c4 PP |
1806 | if (viewer_connection) { |
1807 | live_viewer_connection_destroy(viewer_connection); | |
1808 | } | |
8dd99d00 FD |
1809 | end: |
1810 | return status; | |
7cdc2bab MD |
1811 | } |
1812 | ||
1813 | BT_HIDDEN | |
bb18709b FD |
1814 | void live_viewer_connection_destroy( |
1815 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1816 | { |
f555be5d FD |
1817 | bt_self_component *self_comp = viewer_connection->self_comp; |
1818 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; | |
31ee2162 FD |
1819 | |
1820 | if (!viewer_connection) { | |
1821 | goto end; | |
1822 | } | |
1823 | ||
f555be5d FD |
1824 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
1825 | "Closing connection to relay:" | |
1826 | "relay-url=\"%s\"", viewer_connection->url->str); | |
1827 | ||
7cdc2bab | 1828 | lttng_live_disconnect_viewer(viewer_connection); |
31ee2162 | 1829 | |
487e99c4 PP |
1830 | if (viewer_connection->url) { |
1831 | g_string_free(viewer_connection->url, true); | |
1832 | } | |
31ee2162 | 1833 | |
94b828f3 | 1834 | if (viewer_connection->relay_hostname) { |
bb18709b | 1835 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 | 1836 | } |
31ee2162 | 1837 | |
94b828f3 | 1838 | if (viewer_connection->target_hostname) { |
bb18709b | 1839 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 | 1840 | } |
31ee2162 | 1841 | |
94b828f3 | 1842 | if (viewer_connection->session_name) { |
bb18709b | 1843 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1844 | } |
31ee2162 | 1845 | |
f555be5d FD |
1846 | if (viewer_connection->proto) { |
1847 | g_string_free(viewer_connection->proto, true); | |
1848 | } | |
1849 | ||
7cdc2bab | 1850 | g_free(viewer_connection); |
a2147eb2 MJ |
1851 | |
1852 | bt_socket_fini(); | |
31ee2162 FD |
1853 | |
1854 | end: | |
1855 | return; | |
7cdc2bab | 1856 | } |