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 | ||
113 | /* | |
114 | * This function receives a message from the Relay daemon. | |
115 | * If it received the entire message, it returns _OK, | |
116 | * If it's interrupted, it returns _INTERRUPTED, | |
117 | * otherwise, it returns _ERROR. | |
118 | */ | |
bb18709b | 119 | static |
8dd99d00 FD |
120 | enum lttng_live_viewer_status lttng_live_recv( |
121 | struct live_viewer_connection *viewer_connection, | |
4c66436f | 122 | void *buf, size_t len) |
7cdc2bab | 123 | { |
8dd99d00 FD |
124 | ssize_t received; |
125 | bt_self_component_class *self_comp_class = | |
126 | viewer_connection->self_comp_class; | |
127 | bt_self_component *self_comp = | |
128 | viewer_connection->self_comp; | |
129 | size_t total_received = 0, to_receive = len; | |
bb18709b FD |
130 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
131 | viewer_connection->lttng_live_msg_iter; | |
8dd99d00 | 132 | enum lttng_live_viewer_status status; |
a2147eb2 | 133 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab | 134 | |
8dd99d00 FD |
135 | /* |
136 | * Receive a message from the Relay. | |
137 | */ | |
7cdc2bab | 138 | do { |
8dd99d00 FD |
139 | received = bt_socket_recv(sock, buf + total_received, to_receive, 0); |
140 | if (received == BT_SOCKET_ERROR) { | |
141 | if (bt_socket_interrupted()) { | |
142 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
143 | /* | |
144 | * This interruption was due to a | |
145 | * SIGINT and the graph is being torn | |
146 | * down. | |
147 | */ | |
148 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
149 | lttng_live_msg_iter->was_interrupted = true; | |
150 | goto end; | |
151 | } else { | |
152 | /* | |
153 | * A signal was received, but the graph | |
154 | * is not being torn down. Carry on. | |
155 | */ | |
156 | continue; | |
157 | } | |
4c66436f | 158 | } else { |
8dd99d00 FD |
159 | /* |
160 | * For any other types of socket error, returng | |
161 | * an error. | |
162 | */ | |
163 | LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO( | |
164 | self_comp, self_comp_class, | |
165 | "Error receiving from Relay", "."); | |
166 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
167 | goto end; | |
4c66436f | 168 | } |
8dd99d00 FD |
169 | } else if (received == 0) { |
170 | /* | |
171 | * The recv() call returned 0. This means the | |
172 | * connection was orderly shutdown from the other peer. | |
173 | * If that happens when we are trying to receive | |
174 | * a message from it, it means something when wrong. | |
175 | */ | |
176 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
177 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, | |
178 | self_comp_class, "Remote side has closed connection"); | |
179 | goto end; | |
4c66436f | 180 | } |
b4a5dfd9 | 181 | |
8dd99d00 FD |
182 | BT_ASSERT(received <= to_receive); |
183 | total_received += received; | |
184 | to_receive -= received; | |
b4a5dfd9 | 185 | |
8dd99d00 FD |
186 | } while (to_receive > 0); |
187 | ||
188 | BT_ASSERT(total_received == len); | |
189 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
190 | ||
191 | end: | |
192 | return status; | |
7cdc2bab MD |
193 | } |
194 | ||
8dd99d00 FD |
195 | /* |
196 | * This function sends a message to the Relay daemon. | |
197 | * If it send the message, it returns _OK, | |
198 | * If it's interrupted, it returns _INTERRUPTED, | |
199 | * otherwise, it returns _ERROR. | |
200 | */ | |
bb18709b | 201 | static |
8dd99d00 FD |
202 | enum lttng_live_viewer_status lttng_live_send( |
203 | struct live_viewer_connection *viewer_connection, | |
4c66436f | 204 | const void *buf, size_t len) |
7cdc2bab | 205 | { |
8dd99d00 FD |
206 | enum lttng_live_viewer_status status; |
207 | bt_self_component_class *self_comp_class = | |
208 | viewer_connection->self_comp_class; | |
209 | bt_self_component *self_comp = | |
210 | viewer_connection->self_comp; | |
bb18709b FD |
211 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
212 | viewer_connection->lttng_live_msg_iter; | |
a2147eb2 | 213 | BT_SOCKET sock = viewer_connection->control_sock; |
8dd99d00 FD |
214 | size_t to_send = len; |
215 | ssize_t total_sent = 0; | |
216 | ||
217 | do { | |
218 | ssize_t sent = bt_socket_send_nosigpipe(sock, buf + total_sent, | |
219 | to_send); | |
220 | if (sent == BT_SOCKET_ERROR) { | |
221 | if (bt_socket_interrupted()) { | |
222 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
223 | /* | |
224 | * This interruption was a SIGINT and | |
225 | * the graph is being teared down. | |
226 | */ | |
227 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
228 | lttng_live_msg_iter->was_interrupted = true; | |
229 | goto end; | |
230 | } else { | |
231 | /* | |
232 | * A signal was received, but the graph | |
233 | * is not being teared down. Carry on. | |
234 | */ | |
235 | continue; | |
236 | } | |
4c66436f | 237 | } else { |
8dd99d00 FD |
238 | /* |
239 | * The send() call returned an error. | |
240 | */ | |
241 | LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO( | |
242 | self_comp, self_comp_class, | |
243 | "Error sending to Relay", "."); | |
244 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
245 | goto end; | |
4c66436f | 246 | } |
4c66436f | 247 | } |
8dd99d00 FD |
248 | |
249 | BT_ASSERT(sent <= to_send); | |
250 | total_sent += sent; | |
251 | to_send -= sent; | |
252 | ||
253 | } while (to_send > 0); | |
254 | ||
255 | BT_ASSERT(total_sent == len); | |
256 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
257 | ||
258 | end: | |
259 | return status; | |
7cdc2bab MD |
260 | } |
261 | ||
bb18709b FD |
262 | static |
263 | int parse_url(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 264 | { |
94b828f3 | 265 | char error_buf[256] = { 0 }; |
f6e2a9d2 FD |
266 | bt_self_component *self_comp = viewer_connection->self_comp; |
267 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; | |
94b828f3 MD |
268 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; |
269 | int ret = -1; | |
7cdc2bab | 270 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
271 | |
272 | if (!path) { | |
273 | goto end; | |
274 | } | |
7cdc2bab | 275 | |
0b6986b4 FD |
276 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, error_buf, |
277 | sizeof(error_buf)); | |
94b828f3 | 278 | if (!lttng_live_url_parts.proto) { |
f6e2a9d2 FD |
279 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
280 | self_comp_class,"Invalid LTTng live URL format: %s", | |
281 | error_buf); | |
7cdc2bab MD |
282 | goto end; |
283 | } | |
7cdc2bab | 284 | |
0b6986b4 | 285 | viewer_connection->relay_hostname = lttng_live_url_parts.hostname; |
94b828f3 MD |
286 | lttng_live_url_parts.hostname = NULL; |
287 | ||
288 | if (lttng_live_url_parts.port >= 0) { | |
289 | viewer_connection->port = lttng_live_url_parts.port; | |
290 | } else { | |
7cdc2bab MD |
291 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
292 | } | |
293 | ||
0b6986b4 | 294 | viewer_connection->target_hostname = lttng_live_url_parts.target_hostname; |
94b828f3 MD |
295 | lttng_live_url_parts.target_hostname = NULL; |
296 | ||
297 | if (lttng_live_url_parts.session_name) { | |
0b6986b4 | 298 | viewer_connection->session_name = lttng_live_url_parts.session_name; |
94b828f3 | 299 | lttng_live_url_parts.session_name = NULL; |
7cdc2bab MD |
300 | } |
301 | ||
5278d5ba | 302 | BT_COMP_LOGI("Connecting to hostname : %s, port : %d, " |
0b6986b4 FD |
303 | "target hostname : %s, session name : %s, proto : %s", |
304 | viewer_connection->relay_hostname->str, | |
305 | viewer_connection->port, | |
306 | !viewer_connection->target_hostname ? | |
307 | "<none>" : viewer_connection->target_hostname->str, | |
308 | !viewer_connection->session_name ? | |
309 | "<none>" : viewer_connection->session_name->str, | |
310 | lttng_live_url_parts.proto->str); | |
7cdc2bab MD |
311 | ret = 0; |
312 | ||
313 | end: | |
94b828f3 | 314 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
315 | return ret; |
316 | } | |
317 | ||
bb18709b | 318 | static |
8dd99d00 FD |
319 | enum lttng_live_viewer_status lttng_live_handshake( |
320 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
321 | { |
322 | struct lttng_viewer_cmd cmd; | |
323 | struct lttng_viewer_connect connect; | |
8dd99d00 | 324 | enum lttng_live_viewer_status status; |
f6e2a9d2 FD |
325 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
326 | bt_self_component *self_comp = viewer_connection->self_comp; | |
02b23da7 JR |
327 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
328 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
329 | |
330 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
331 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
332 | cmd.cmd_version = htobe32(0); | |
333 | ||
334 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
335 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
336 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
337 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
338 | ||
02b23da7 JR |
339 | /* |
340 | * Merge the cmd and connection request to prevent a write-write | |
341 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
342 | * second write to be performed quickly in presence of Nagle's algorithm | |
343 | */ | |
344 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
345 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
7cdc2bab | 346 | |
8dd99d00 FD |
347 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
348 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
349 | viewer_handle_send_status(self_comp, self_comp_class, | |
350 | status, "viewer connect command"); | |
351 | goto end; | |
7cdc2bab | 352 | } |
8dd99d00 FD |
353 | |
354 | status = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); | |
355 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
356 | viewer_handle_recv_status(self_comp, self_comp_class, | |
357 | status, "viewer connect reply"); | |
358 | goto end; | |
7cdc2bab | 359 | } |
7cdc2bab | 360 | |
5278d5ba | 361 | BT_COMP_LOGI("Received viewer session ID : %" PRIu64, |
ba412a2f | 362 | (uint64_t) be64toh(connect.viewer_session_id)); |
5278d5ba | 363 | BT_COMP_LOGI("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
364 | be32toh(connect.minor)); |
365 | ||
366 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
f6e2a9d2 FD |
367 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
368 | self_comp_class, "Incompatible lttng-relayd protocol"); | |
8dd99d00 FD |
369 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
370 | goto end; | |
7cdc2bab MD |
371 | } |
372 | /* Use the smallest protocol version implemented. */ | |
373 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
374 | viewer_connection->minor = be32toh(connect.minor); | |
375 | } else { | |
376 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
377 | } | |
378 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
7cdc2bab | 379 | |
8dd99d00 FD |
380 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
381 | ||
382 | goto end; | |
383 | ||
384 | end: | |
385 | return status; | |
7cdc2bab MD |
386 | } |
387 | ||
bb18709b | 388 | static |
8dd99d00 FD |
389 | enum lttng_live_viewer_status lttng_live_connect_viewer( |
390 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
391 | { |
392 | struct hostent *host; | |
393 | struct sockaddr_in server_addr; | |
8dd99d00 | 394 | enum lttng_live_viewer_status status; |
f6e2a9d2 FD |
395 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
396 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
397 | |
398 | if (parse_url(viewer_connection)) { | |
f6e2a9d2 FD |
399 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
400 | self_comp_class, "Failed to parse URL"); | |
8dd99d00 | 401 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
402 | goto error; |
403 | } | |
404 | ||
94b828f3 | 405 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 406 | if (!host) { |
f6e2a9d2 FD |
407 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
408 | self_comp_class, "Cannot lookup hostname: hostname=\"%s\"", | |
94b828f3 | 409 | viewer_connection->relay_hostname->str); |
8dd99d00 | 410 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
411 | goto error; |
412 | } | |
413 | ||
a2147eb2 | 414 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
f6e2a9d2 FD |
415 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
416 | self_comp_class, "Socket creation failed: %s", bt_socket_errormsg()); | |
8dd99d00 | 417 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
418 | goto error; |
419 | } | |
420 | ||
421 | server_addr.sin_family = AF_INET; | |
422 | server_addr.sin_port = htons(viewer_connection->port); | |
423 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
424 | memset(&(server_addr.sin_zero), 0, 8); | |
425 | ||
426 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
a2147eb2 | 427 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
f6e2a9d2 FD |
428 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
429 | self_comp_class, "Connection failed: %s", | |
430 | bt_socket_errormsg()); | |
8dd99d00 | 431 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
432 | goto error; |
433 | } | |
8dd99d00 FD |
434 | |
435 | status = lttng_live_handshake(viewer_connection); | |
436 | ||
437 | /* | |
438 | * Only print error and append cause in case of error. not in case of | |
439 | * interruption. | |
440 | */ | |
441 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 FD |
442 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
443 | self_comp_class, "Viewer handshake failed"); | |
7cdc2bab | 444 | goto error; |
8dd99d00 FD |
445 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
446 | goto end; | |
7cdc2bab MD |
447 | } |
448 | ||
8dd99d00 | 449 | goto end; |
7cdc2bab MD |
450 | |
451 | error: | |
a2147eb2 MJ |
452 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
453 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
f6e2a9d2 FD |
454 | BT_COMP_OR_COMP_CLASS_LOGE(self_comp, self_comp_class, |
455 | "Error closing socket: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
456 | } |
457 | } | |
a2147eb2 | 458 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
8dd99d00 FD |
459 | end: |
460 | return status; | |
7cdc2bab MD |
461 | } |
462 | ||
bb18709b FD |
463 | static |
464 | void lttng_live_disconnect_viewer( | |
465 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 466 | { |
a2147eb2 | 467 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
468 | return; |
469 | } | |
a2147eb2 | 470 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
f6e2a9d2 FD |
471 | BT_COMP_LOGE("Error closing socket: %s", |
472 | bt_socket_errormsg()); | |
a2147eb2 | 473 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
474 | } |
475 | } | |
476 | ||
7cdc2bab | 477 | static |
bb18709b | 478 | int list_update_session(bt_value *results, |
7cdc2bab | 479 | const struct lttng_viewer_session *session, |
1c0ceb65 | 480 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 481 | { |
f6e2a9d2 FD |
482 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
483 | bt_self_component *self_comp = viewer_connection->self_comp; | |
b602018b FD |
484 | int ret = 0; |
485 | uint64_t i, len; | |
8eee8ea2 PP |
486 | bt_value *map = NULL; |
487 | bt_value *hostname = NULL; | |
488 | bt_value *session_name = NULL; | |
489 | bt_value *btval = NULL; | |
7cdc2bab MD |
490 | bool found = false; |
491 | ||
1270d0e9 | 492 | len = bt_value_array_get_length(results); |
7cdc2bab MD |
493 | for (i = 0; i < len; i++) { |
494 | const char *hostname_str = NULL; | |
495 | const char *session_name_str = NULL; | |
496 | ||
b602018b | 497 | map = bt_value_array_borrow_element_by_index(results, i); |
bb18709b | 498 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 499 | if (!hostname) { |
f6e2a9d2 FD |
500 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
501 | self_comp_class, | |
502 | "Error borrowing \"target-hostname\" entry."); | |
bb18709b | 503 | ret = -1; |
7cdc2bab MD |
504 | goto end; |
505 | } | |
bb18709b | 506 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 507 | if (!session_name) { |
f6e2a9d2 FD |
508 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
509 | self_comp_class, | |
510 | "Error borrowing \"session-name\" entry."); | |
bb18709b | 511 | ret = -1; |
7cdc2bab MD |
512 | goto end; |
513 | } | |
b5cdc106 PP |
514 | hostname_str = bt_value_string_get(hostname); |
515 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 516 | |
acfa8112 PP |
517 | if (strcmp(session->hostname, hostname_str) == 0 |
518 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
519 | int64_t val; |
520 | uint32_t streams = be32toh(session->streams); | |
521 | uint32_t clients = be32toh(session->clients); | |
522 | ||
523 | found = true; | |
524 | ||
bb18709b | 525 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 526 | if (!btval) { |
f6e2a9d2 FD |
527 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
528 | self_comp, self_comp_class, | |
529 | "Error borrowing \"stream-count\" entry."); | |
bb18709b | 530 | ret = -1; |
7cdc2bab MD |
531 | goto end; |
532 | } | |
9d9daa04 | 533 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
534 | /* sum */ |
535 | val += streams; | |
9d9daa04 | 536 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 537 | |
bb18709b | 538 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 539 | if (!btval) { |
f6e2a9d2 FD |
540 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
541 | self_comp, self_comp_class, | |
542 | "Error borrowing \"client-count\" entry."); | |
bb18709b | 543 | ret = -1; |
7cdc2bab MD |
544 | goto end; |
545 | } | |
9d9daa04 | 546 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 547 | /* max */ |
85e7137b | 548 | val = bt_max_t(int64_t, clients, val); |
9d9daa04 | 549 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
550 | } |
551 | ||
7cdc2bab MD |
552 | if (found) { |
553 | break; | |
554 | } | |
555 | } | |
556 | end: | |
7cdc2bab MD |
557 | *_found = found; |
558 | return ret; | |
559 | } | |
560 | ||
561 | static | |
bb18709b | 562 | int list_append_session(bt_value *results, |
7cdc2bab | 563 | GString *base_url, |
1c0ceb65 PP |
564 | const struct lttng_viewer_session *session, |
565 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 566 | { |
bb18709b | 567 | int ret = 0; |
f6e2a9d2 | 568 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
fb25b9e3 PP |
569 | bt_value_map_insert_entry_status insert_status; |
570 | bt_value_array_append_element_status append_status; | |
8eee8ea2 | 571 | bt_value *map = NULL; |
7cdc2bab MD |
572 | GString *url = NULL; |
573 | bool found = false; | |
574 | ||
575 | /* | |
576 | * If the session already exists, add the stream count to it, | |
577 | * and do max of client counts. | |
578 | */ | |
1c0ceb65 | 579 | ret = list_update_session(results, session, &found, viewer_connection); |
bb18709b | 580 | if (ret || found) { |
7cdc2bab MD |
581 | goto end; |
582 | } | |
583 | ||
bb18709b | 584 | map = bt_value_map_create(); |
7cdc2bab | 585 | if (!map) { |
f6e2a9d2 FD |
586 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
587 | "Error creating map value."); | |
bb18709b | 588 | ret = -1; |
7cdc2bab MD |
589 | goto end; |
590 | } | |
591 | ||
592 | if (base_url->len < 1) { | |
f6e2a9d2 FD |
593 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
594 | "Error: base_url length smaller than 1."); | |
bb18709b | 595 | ret = -1; |
7cdc2bab MD |
596 | goto end; |
597 | } | |
598 | /* | |
599 | * key = "url", | |
600 | * value = <string>, | |
601 | */ | |
602 | url = g_string_new(base_url->str); | |
603 | g_string_append(url, "/host/"); | |
604 | g_string_append(url, session->hostname); | |
605 | g_string_append_c(url, '/'); | |
606 | g_string_append(url, session->session_name); | |
607 | ||
fb25b9e3 PP |
608 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
609 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
f6e2a9d2 FD |
610 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
611 | "Error inserting \"url\" entry."); | |
bb18709b | 612 | ret = -1; |
7cdc2bab MD |
613 | goto end; |
614 | } | |
615 | ||
616 | /* | |
617 | * key = "target-hostname", | |
618 | * value = <string>, | |
619 | */ | |
fb25b9e3 | 620 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 621 | session->hostname); |
fb25b9e3 | 622 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
623 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
624 | "Error inserting \"target-hostname\" entry."); | |
bb18709b | 625 | ret = -1; |
7cdc2bab MD |
626 | goto end; |
627 | } | |
628 | ||
629 | /* | |
630 | * key = "session-name", | |
631 | * value = <string>, | |
632 | */ | |
fb25b9e3 | 633 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 634 | session->session_name); |
fb25b9e3 | 635 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
636 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
637 | "Error inserting \"session-name\" entry."); | |
bb18709b | 638 | ret = -1; |
7cdc2bab MD |
639 | goto end; |
640 | } | |
641 | ||
642 | /* | |
643 | * key = "timer-us", | |
644 | * value = <integer>, | |
645 | */ | |
646 | { | |
647 | uint32_t live_timer = be32toh(session->live_timer); | |
648 | ||
9d9daa04 | 649 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
68d9d039 | 650 | map, "timer-us", live_timer); |
fb25b9e3 | 651 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
652 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
653 | "Error inserting \"timer-us\" entry."); | |
bb18709b | 654 | ret = -1; |
7cdc2bab MD |
655 | goto end; |
656 | } | |
657 | } | |
658 | ||
659 | /* | |
660 | * key = "stream-count", | |
661 | * value = <integer>, | |
662 | */ | |
663 | { | |
664 | uint32_t streams = be32toh(session->streams); | |
665 | ||
9d9daa04 | 666 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
68d9d039 | 667 | "stream-count", streams); |
fb25b9e3 | 668 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
669 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
670 | "Error inserting \"stream-count\" entry."); | |
bb18709b | 671 | ret = -1; |
7cdc2bab MD |
672 | goto end; |
673 | } | |
674 | } | |
675 | ||
7cdc2bab MD |
676 | /* |
677 | * key = "client-count", | |
678 | * value = <integer>, | |
679 | */ | |
680 | { | |
681 | uint32_t clients = be32toh(session->clients); | |
682 | ||
9d9daa04 | 683 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
68d9d039 | 684 | "client-count", clients); |
fb25b9e3 | 685 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
f6e2a9d2 FD |
686 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
687 | "Error inserting \"client-count\" entry."); | |
bb18709b | 688 | ret = -1; |
7cdc2bab MD |
689 | goto end; |
690 | } | |
691 | } | |
692 | ||
fb25b9e3 PP |
693 | append_status = bt_value_array_append_element(results, map); |
694 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
f6e2a9d2 FD |
695 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
696 | "Error appending map to results."); | |
bb18709b FD |
697 | ret = -1; |
698 | } | |
699 | ||
7cdc2bab MD |
700 | end: |
701 | if (url) { | |
bb18709b | 702 | g_string_free(url, true); |
7cdc2bab | 703 | } |
8c6884d9 | 704 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
705 | return ret; |
706 | } | |
707 | ||
708 | /* | |
709 | * Data structure returned: | |
710 | * | |
711 | * { | |
712 | * <array> = { | |
713 | * [n] = { | |
714 | * <map> = { | |
715 | * { | |
716 | * key = "url", | |
717 | * value = <string>, | |
718 | * }, | |
719 | * { | |
720 | * key = "target-hostname", | |
721 | * value = <string>, | |
722 | * }, | |
723 | * { | |
724 | * key = "session-name", | |
725 | * value = <string>, | |
726 | * }, | |
727 | * { | |
728 | * key = "timer-us", | |
729 | * value = <integer>, | |
730 | * }, | |
731 | * { | |
732 | * key = "stream-count", | |
733 | * value = <integer>, | |
734 | * }, | |
735 | * { | |
736 | * key = "client-count", | |
737 | * value = <integer>, | |
738 | * }, | |
739 | * }, | |
740 | * } | |
741 | * } | |
742 | */ | |
743 | ||
744 | BT_HIDDEN | |
fb25b9e3 | 745 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
bb18709b FD |
746 | struct live_viewer_connection *viewer_connection, |
747 | const bt_value **user_result) | |
7cdc2bab | 748 | { |
f6e2a9d2 | 749 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
fb25b9e3 PP |
750 | bt_component_class_query_method_status status = |
751 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
bb18709b | 752 | bt_value *result = NULL; |
8dd99d00 | 753 | enum lttng_live_viewer_status viewer_status; |
7cdc2bab MD |
754 | struct lttng_viewer_cmd cmd; |
755 | struct lttng_viewer_list_sessions list; | |
756 | uint32_t i, sessions_count; | |
7cdc2bab | 757 | |
bb18709b FD |
758 | result = bt_value_array_create(); |
759 | if (!result) { | |
f6e2a9d2 FD |
760 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
761 | "Error creating array"); | |
fb25b9e3 | 762 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
763 | goto error; |
764 | } | |
765 | ||
766 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
767 | cmd.data_size = htobe64((uint64_t) 0); | |
768 | cmd.cmd_version = htobe32(0); | |
769 | ||
8dd99d00 FD |
770 | viewer_status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
771 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 | 772 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
8dd99d00 | 773 | "Error sending list sessions command"); |
fb25b9e3 | 774 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 775 | goto error; |
8dd99d00 FD |
776 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
777 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
778 | goto error; | |
7cdc2bab | 779 | } |
7cdc2bab | 780 | |
8dd99d00 FD |
781 | viewer_status = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
782 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 | 783 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
8dd99d00 | 784 | "Error receiving session list"); |
fb25b9e3 | 785 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 786 | goto error; |
8dd99d00 FD |
787 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
788 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
7cdc2bab MD |
789 | goto error; |
790 | } | |
7cdc2bab MD |
791 | |
792 | sessions_count = be32toh(list.sessions_count); | |
793 | for (i = 0; i < sessions_count; i++) { | |
794 | struct lttng_viewer_session lsession; | |
795 | ||
8dd99d00 | 796 | viewer_status = lttng_live_recv(viewer_connection, &lsession, |
bb18709b | 797 | sizeof(lsession)); |
8dd99d00 | 798 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { |
f6e2a9d2 | 799 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
8dd99d00 | 800 | "Error receiving session:"); |
fb25b9e3 | 801 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 802 | goto error; |
8dd99d00 FD |
803 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
804 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
7cdc2bab MD |
805 | goto error; |
806 | } | |
8dd99d00 | 807 | |
7cdc2bab MD |
808 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
809 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
bb18709b | 810 | if (list_append_session(result, viewer_connection->url, |
1c0ceb65 | 811 | &lsession, viewer_connection)) { |
f6e2a9d2 FD |
812 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
813 | "Error appending session"); | |
fb25b9e3 | 814 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
815 | goto error; |
816 | } | |
817 | } | |
bb18709b FD |
818 | |
819 | *user_result = result; | |
7cdc2bab MD |
820 | goto end; |
821 | error: | |
bb18709b | 822 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 823 | end: |
bb18709b | 824 | return status; |
7cdc2bab MD |
825 | } |
826 | ||
827 | static | |
8dd99d00 FD |
828 | enum lttng_live_viewer_status lttng_live_query_session_ids( |
829 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
830 | { |
831 | struct lttng_viewer_cmd cmd; | |
832 | struct lttng_viewer_list_sessions list; | |
833 | struct lttng_viewer_session lsession; | |
834 | uint32_t i, sessions_count; | |
7cdc2bab | 835 | uint64_t session_id; |
8dd99d00 | 836 | enum lttng_live_viewer_status status; |
bb18709b | 837 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
838 | lttng_live_msg_iter->viewer_connection; |
839 | bt_self_component *self_comp = viewer_connection->self_comp; | |
8dd99d00 FD |
840 | bt_self_component_class *self_comp_class = |
841 | viewer_connection->self_comp_class; | |
7cdc2bab MD |
842 | |
843 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
844 | cmd.data_size = htobe64((uint64_t) 0); | |
845 | cmd.cmd_version = htobe32(0); | |
846 | ||
8dd99d00 FD |
847 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
848 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
849 | viewer_handle_send_status(self_comp, self_comp_class, | |
850 | status, "list sessions command"); | |
851 | goto end; | |
7cdc2bab | 852 | } |
7cdc2bab | 853 | |
8dd99d00 FD |
854 | status = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
855 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
856 | viewer_handle_recv_status(self_comp, self_comp_class, | |
857 | status, "session list reply"); | |
858 | goto end; | |
7cdc2bab | 859 | } |
7cdc2bab MD |
860 | |
861 | sessions_count = be32toh(list.sessions_count); | |
862 | for (i = 0; i < sessions_count; i++) { | |
8dd99d00 FD |
863 | status = lttng_live_recv(viewer_connection, &lsession, |
864 | sizeof(lsession)); | |
865 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
866 | viewer_handle_recv_status(self_comp, self_comp_class, | |
867 | status, "session reply"); | |
868 | goto end; | |
7cdc2bab | 869 | } |
7cdc2bab MD |
870 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
871 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
872 | session_id = be64toh(lsession.id); | |
873 | ||
5278d5ba | 874 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
875 | session_id, lsession.hostname, lsession.session_name); |
876 | ||
7cdc2bab | 877 | if ((strncmp(lsession.session_name, |
94b828f3 | 878 | viewer_connection->session_name->str, |
a2147eb2 | 879 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 880 | viewer_connection->target_hostname->str, |
a2147eb2 | 881 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
bb18709b | 882 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
883 | lsession.hostname, |
884 | lsession.session_name)) { | |
f6e2a9d2 FD |
885 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
886 | "Failed to add live session"); | |
8dd99d00 FD |
887 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
888 | goto end; | |
7cdc2bab MD |
889 | } |
890 | } | |
891 | } | |
892 | ||
8dd99d00 | 893 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 894 | |
8dd99d00 FD |
895 | end: |
896 | return status; | |
7cdc2bab MD |
897 | } |
898 | ||
899 | BT_HIDDEN | |
8dd99d00 | 900 | enum lttng_live_viewer_status lttng_live_create_viewer_session( |
bb18709b | 901 | struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
902 | { |
903 | struct lttng_viewer_cmd cmd; | |
904 | struct lttng_viewer_create_session_response resp; | |
8dd99d00 | 905 | enum lttng_live_viewer_status status; |
bb18709b | 906 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
907 | lttng_live_msg_iter->viewer_connection; |
908 | bt_self_component *self_comp = viewer_connection->self_comp; | |
8dd99d00 FD |
909 | bt_self_component_class *self_comp_class = |
910 | viewer_connection->self_comp_class; | |
7cdc2bab MD |
911 | |
912 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
913 | cmd.data_size = htobe64((uint64_t) 0); | |
914 | cmd.cmd_version = htobe32(0); | |
915 | ||
8dd99d00 FD |
916 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
917 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
918 | viewer_handle_send_status(self_comp, self_comp_class, | |
919 | status, "create session command"); | |
920 | goto end; | |
7cdc2bab | 921 | } |
7cdc2bab | 922 | |
8dd99d00 FD |
923 | status = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
924 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
925 | viewer_handle_recv_status(self_comp, self_comp_class, | |
926 | status, "create session reply"); | |
927 | goto end; | |
7cdc2bab | 928 | } |
7cdc2bab MD |
929 | |
930 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
f6e2a9d2 FD |
931 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
932 | "Error creating viewer session"); | |
8dd99d00 FD |
933 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
934 | goto end; | |
7cdc2bab | 935 | } |
8dd99d00 FD |
936 | |
937 | status = lttng_live_query_session_ids(lttng_live_msg_iter); | |
938 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 FD |
939 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
940 | "Failed to query live viewer session ids"); | |
8dd99d00 FD |
941 | goto end; |
942 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
943 | goto end; | |
7cdc2bab MD |
944 | } |
945 | ||
8dd99d00 FD |
946 | end: |
947 | return status; | |
7cdc2bab MD |
948 | } |
949 | ||
950 | static | |
8dd99d00 | 951 | enum lttng_live_viewer_status receive_streams(struct lttng_live_session *session, |
2428e031 SM |
952 | uint32_t stream_count, |
953 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 954 | { |
7cdc2bab | 955 | uint32_t i; |
bb18709b | 956 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0b6986b4 | 957 | session->lttng_live_msg_iter; |
8dd99d00 | 958 | enum lttng_live_viewer_status status; |
bb18709b | 959 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 960 | lttng_live_msg_iter->viewer_connection; |
f6e2a9d2 | 961 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 962 | |
5278d5ba | 963 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
964 | for (i = 0; i < stream_count; i++) { |
965 | struct lttng_viewer_stream stream; | |
966 | struct lttng_live_stream_iterator *live_stream; | |
967 | uint64_t stream_id; | |
968 | uint64_t ctf_trace_id; | |
969 | ||
8dd99d00 FD |
970 | status = lttng_live_recv(viewer_connection, &stream, |
971 | sizeof(stream)); | |
972 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
973 | viewer_handle_recv_status(self_comp, NULL, | |
974 | status, "stream reply"); | |
975 | goto end; | |
7cdc2bab | 976 | } |
7cdc2bab MD |
977 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
978 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
979 | stream_id = be64toh(stream.id); | |
980 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
981 | ||
982 | if (stream.metadata_flag) { | |
5278d5ba | 983 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0b6986b4 | 984 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 985 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
986 | ctf_trace_id, stream_id, |
987 | stream.path_name)) { | |
f6e2a9d2 FD |
988 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
989 | "Error creating metadata stream"); | |
8dd99d00 FD |
990 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
991 | goto end; | |
7cdc2bab | 992 | } |
b09a5592 | 993 | session->lazy_stream_msg_init = true; |
7cdc2bab | 994 | } else { |
5278d5ba | 995 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0b6986b4 | 996 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 997 | live_stream = lttng_live_stream_iterator_create(session, |
2428e031 | 998 | ctf_trace_id, stream_id, self_msg_iter); |
7cdc2bab | 999 | if (!live_stream) { |
f6e2a9d2 FD |
1000 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1001 | "Error creating stream"); | |
8dd99d00 FD |
1002 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1003 | goto end; | |
7cdc2bab MD |
1004 | } |
1005 | } | |
1006 | } | |
8dd99d00 | 1007 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 1008 | |
8dd99d00 FD |
1009 | end: |
1010 | return status; | |
7cdc2bab MD |
1011 | } |
1012 | ||
1013 | BT_HIDDEN | |
8dd99d00 | 1014 | enum lttng_live_viewer_status lttng_live_attach_session( |
2428e031 SM |
1015 | struct lttng_live_session *session, |
1016 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab MD |
1017 | { |
1018 | struct lttng_viewer_cmd cmd; | |
8dd99d00 | 1019 | enum lttng_live_viewer_status status; |
7cdc2bab MD |
1020 | struct lttng_viewer_attach_session_request rq; |
1021 | struct lttng_viewer_attach_session_response rp; | |
0b6986b4 FD |
1022 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1023 | session->lttng_live_msg_iter; | |
bb18709b | 1024 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 1025 | lttng_live_msg_iter->viewer_connection; |
f6e2a9d2 | 1026 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab MD |
1027 | uint64_t session_id = session->id; |
1028 | uint32_t streams_count; | |
02b23da7 JR |
1029 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1030 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1031 | |
7cdc2bab MD |
1032 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
1033 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1034 | cmd.cmd_version = htobe32(0); | |
1035 | ||
1036 | memset(&rq, 0, sizeof(rq)); | |
1037 | rq.session_id = htobe64(session_id); | |
1038 | // TODO: add cmd line parameter to select seek beginning | |
1039 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
1040 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
1041 | ||
02b23da7 JR |
1042 | /* |
1043 | * Merge the cmd and connection request to prevent a write-write | |
1044 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1045 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1046 | */ | |
1047 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1048 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1049 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1050 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1051 | viewer_handle_send_status(self_comp, NULL, | |
1052 | status, "attach session command"); | |
1053 | goto end; | |
7cdc2bab | 1054 | } |
7cdc2bab | 1055 | |
8dd99d00 FD |
1056 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1057 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1058 | viewer_handle_recv_status(self_comp, NULL, | |
1059 | status, "attach session reply"); | |
1060 | goto end; | |
7cdc2bab | 1061 | } |
7cdc2bab MD |
1062 | |
1063 | streams_count = be32toh(rp.streams_count); | |
1064 | switch(be32toh(rp.status)) { | |
1065 | case LTTNG_VIEWER_ATTACH_OK: | |
1066 | break; | |
1067 | case LTTNG_VIEWER_ATTACH_UNK: | |
f6e2a9d2 FD |
1068 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1069 | "Session id %" PRIu64 " is unknown", session_id); | |
8dd99d00 FD |
1070 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1071 | goto end; | |
7cdc2bab | 1072 | case LTTNG_VIEWER_ATTACH_ALREADY: |
f6e2a9d2 FD |
1073 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1074 | "There is already a viewer attached to this session"); | |
8dd99d00 FD |
1075 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1076 | goto end; | |
7cdc2bab | 1077 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: |
f6e2a9d2 | 1078 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Not a live session"); |
8dd99d00 FD |
1079 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1080 | goto end; | |
7cdc2bab | 1081 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: |
f6e2a9d2 | 1082 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Wrong seek parameter"); |
8dd99d00 FD |
1083 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1084 | goto end; | |
7cdc2bab | 1085 | default: |
f6e2a9d2 FD |
1086 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1087 | "Unknown attach return code %u", be32toh(rp.status)); | |
8dd99d00 FD |
1088 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1089 | goto end; | |
7cdc2bab MD |
1090 | } |
1091 | ||
1092 | /* We receive the initial list of streams. */ | |
8dd99d00 FD |
1093 | status = receive_streams(session, streams_count, self_msg_iter); |
1094 | switch (status) { | |
1095 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
1096 | break; | |
1097 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
1098 | goto end; | |
1099 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
f6e2a9d2 | 1100 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams"); |
8dd99d00 FD |
1101 | goto end; |
1102 | default: | |
1103 | bt_common_abort(); | |
7cdc2bab MD |
1104 | } |
1105 | ||
1106 | session->attached = true; | |
1107 | session->new_streams_needed = false; | |
1108 | ||
477ede8e | 1109 | end: |
8dd99d00 | 1110 | return status; |
7cdc2bab MD |
1111 | } |
1112 | ||
1113 | BT_HIDDEN | |
8dd99d00 FD |
1114 | enum lttng_live_viewer_status lttng_live_detach_session( |
1115 | struct lttng_live_session *session) | |
7cdc2bab MD |
1116 | { |
1117 | struct lttng_viewer_cmd cmd; | |
8dd99d00 | 1118 | enum lttng_live_viewer_status status; |
7cdc2bab MD |
1119 | struct lttng_viewer_detach_session_request rq; |
1120 | struct lttng_viewer_detach_session_response rp; | |
0b6986b4 FD |
1121 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1122 | session->lttng_live_msg_iter; | |
8dd99d00 | 1123 | bt_self_component *self_comp = session->self_comp; |
bb18709b | 1124 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 1125 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 1126 | uint64_t session_id = session->id; |
02b23da7 JR |
1127 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1128 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1129 | |
1130 | if (!session->attached) { | |
1131 | return 0; | |
1132 | } | |
1133 | ||
1134 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
1135 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1136 | cmd.cmd_version = htobe32(0); | |
1137 | ||
1138 | memset(&rq, 0, sizeof(rq)); | |
1139 | rq.session_id = htobe64(session_id); | |
1140 | ||
02b23da7 JR |
1141 | /* |
1142 | * Merge the cmd and connection request to prevent a write-write | |
1143 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1144 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1145 | */ | |
1146 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1147 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1148 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1149 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1150 | viewer_handle_send_status(self_comp, NULL, | |
1151 | status, "detach session command"); | |
1152 | goto end; | |
7cdc2bab | 1153 | } |
7cdc2bab | 1154 | |
8dd99d00 FD |
1155 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1156 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1157 | viewer_handle_recv_status(self_comp, NULL, | |
1158 | status, "detach session reply"); | |
1159 | goto end; | |
7cdc2bab | 1160 | } |
7cdc2bab MD |
1161 | |
1162 | switch(be32toh(rp.status)) { | |
1163 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
1164 | break; | |
1165 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
5278d5ba | 1166 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
8dd99d00 FD |
1167 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1168 | goto end; | |
7cdc2bab | 1169 | case LTTNG_VIEWER_DETACH_SESSION_ERR: |
5278d5ba | 1170 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
8dd99d00 FD |
1171 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1172 | goto end; | |
7cdc2bab | 1173 | default: |
5278d5ba | 1174 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
8dd99d00 FD |
1175 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1176 | goto end; | |
7cdc2bab MD |
1177 | } |
1178 | ||
1179 | session->attached = false; | |
1180 | ||
8dd99d00 | 1181 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 1182 | |
8dd99d00 FD |
1183 | end: |
1184 | return status; | |
7cdc2bab MD |
1185 | } |
1186 | ||
1187 | BT_HIDDEN | |
f797424a FD |
1188 | enum lttng_live_get_one_metadata_status lttng_live_get_one_metadata_packet( |
1189 | struct lttng_live_trace *trace, FILE *fp, size_t *reply_len) | |
7cdc2bab MD |
1190 | { |
1191 | uint64_t len = 0; | |
8dd99d00 FD |
1192 | enum lttng_live_get_one_metadata_status status; |
1193 | enum lttng_live_viewer_status viewer_status; | |
7cdc2bab MD |
1194 | struct lttng_viewer_cmd cmd; |
1195 | struct lttng_viewer_get_metadata rq; | |
1196 | struct lttng_viewer_metadata_packet rp; | |
1197 | char *data = NULL; | |
1198 | ssize_t ret_len; | |
1199 | struct lttng_live_session *session = trace->session; | |
0b6986b4 FD |
1200 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1201 | session->lttng_live_msg_iter; | |
7cdc2bab | 1202 | struct lttng_live_metadata *metadata = trace->metadata; |
bb18709b | 1203 | struct live_viewer_connection *viewer_connection = |
0b6986b4 | 1204 | lttng_live_msg_iter->viewer_connection; |
f6e2a9d2 | 1205 | bt_self_component *self_comp = viewer_connection->self_comp; |
02b23da7 JR |
1206 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1207 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1208 | |
1209 | rq.stream_id = htobe64(metadata->stream_id); | |
1210 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1211 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1212 | cmd.cmd_version = htobe32(0); | |
1213 | ||
02b23da7 JR |
1214 | /* |
1215 | * Merge the cmd and connection request to prevent a write-write | |
1216 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1217 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1218 | */ | |
1219 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1220 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1221 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1222 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1223 | viewer_handle_send_status(self_comp, NULL, | |
1224 | viewer_status, "get metadata command"); | |
1225 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1226 | goto end; | |
7cdc2bab | 1227 | } |
7cdc2bab | 1228 | |
8dd99d00 FD |
1229 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1230 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1231 | viewer_handle_recv_status(self_comp, NULL, | |
1232 | viewer_status, "get metadata reply"); | |
1233 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1234 | goto end; | |
7cdc2bab | 1235 | } |
7cdc2bab MD |
1236 | |
1237 | switch (be32toh(rp.status)) { | |
1238 | case LTTNG_VIEWER_METADATA_OK: | |
f6e2a9d2 | 1239 | BT_COMP_LOGD("Received get_metadata response: ok"); |
7cdc2bab MD |
1240 | break; |
1241 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
f797424a | 1242 | BT_COMP_LOGD("Received get_metadata response: no new"); |
8dd99d00 | 1243 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END; |
7cdc2bab MD |
1244 | goto end; |
1245 | case LTTNG_VIEWER_METADATA_ERR: | |
f797424a FD |
1246 | /* |
1247 | * The Relayd cannot find this stream id. Maybe its | |
1248 | * gone already. This can happen in short lived UST app | |
1249 | * in a per-pid session. | |
1250 | */ | |
1251 | BT_COMP_LOGD("Received get_metadata response: error"); | |
8dd99d00 | 1252 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED; |
f797424a | 1253 | goto end; |
7cdc2bab | 1254 | default: |
f6e2a9d2 FD |
1255 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1256 | "Received get_metadata response: unknown"); | |
8dd99d00 | 1257 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
7cdc2bab MD |
1258 | goto error; |
1259 | } | |
1260 | ||
1261 | len = be64toh(rp.len); | |
5278d5ba | 1262 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab | 1263 | if (len <= 0) { |
f6e2a9d2 FD |
1264 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1265 | "Erroneous response length"); | |
8dd99d00 | 1266 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
7cdc2bab MD |
1267 | goto error; |
1268 | } | |
1269 | ||
85e7137b | 1270 | data = calloc(1, len); |
7cdc2bab | 1271 | if (!data) { |
f6e2a9d2 FD |
1272 | BT_COMP_LOGE_APPEND_CAUSE_ERRNO(self_comp, |
1273 | "Failed to allocate data buffer", "."); | |
8dd99d00 | 1274 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
7cdc2bab MD |
1275 | goto error; |
1276 | } | |
8dd99d00 FD |
1277 | |
1278 | viewer_status = lttng_live_recv(viewer_connection, data, len); | |
1279 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1280 | viewer_handle_recv_status(self_comp, NULL, | |
1281 | viewer_status, "get metadata packet"); | |
1282 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1283 | goto error; | |
7cdc2bab | 1284 | } |
7cdc2bab | 1285 | |
8dd99d00 FD |
1286 | /* |
1287 | * Write the metadata to the file handle. | |
1288 | */ | |
7cdc2bab MD |
1289 | do { |
1290 | ret_len = fwrite(data, 1, len, fp); | |
1291 | } while (ret_len < 0 && errno == EINTR); | |
1292 | if (ret_len < 0) { | |
f6e2a9d2 FD |
1293 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1294 | "Writing in the metadata file stream"); | |
8dd99d00 FD |
1295 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1296 | goto error; | |
7cdc2bab | 1297 | } |
8b45963b | 1298 | BT_ASSERT(ret_len == len); |
f797424a | 1299 | *reply_len = len; |
8dd99d00 | 1300 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK; |
f797424a | 1301 | |
7cdc2bab | 1302 | error: |
8dd99d00 | 1303 | free(data); |
f797424a FD |
1304 | |
1305 | end: | |
8dd99d00 | 1306 | return status; |
7cdc2bab MD |
1307 | } |
1308 | ||
1309 | /* | |
1310 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1311 | */ | |
1312 | static | |
1313 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1314 | struct packet_index *pindex) | |
1315 | { | |
8b45963b PP |
1316 | BT_ASSERT(lindex); |
1317 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1318 | |
1319 | pindex->offset = be64toh(lindex->offset); | |
1320 | pindex->packet_size = be64toh(lindex->packet_size); | |
1321 | pindex->content_size = be64toh(lindex->content_size); | |
1322 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1323 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1324 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1325 | } | |
1326 | ||
1327 | BT_HIDDEN | |
bb18709b FD |
1328 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1329 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1330 | struct lttng_live_stream_iterator *stream, |
1331 | struct packet_index *index) | |
1332 | { | |
1333 | struct lttng_viewer_cmd cmd; | |
1334 | struct lttng_viewer_get_next_index rq; | |
8dd99d00 | 1335 | enum lttng_live_viewer_status viewer_status; |
7cdc2bab | 1336 | struct lttng_viewer_index rp; |
8dd99d00 | 1337 | enum lttng_live_iterator_status status; |
bb18709b | 1338 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
1339 | lttng_live_msg_iter->viewer_connection; |
1340 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1341 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1342 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1343 | char cmd_buf[cmd_buf_len]; | |
8dd99d00 | 1344 | uint32_t flags, rp_status; |
7cdc2bab MD |
1345 | |
1346 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1347 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1348 | cmd.cmd_version = htobe32(0); | |
1349 | ||
02b23da7 | 1350 | |
7cdc2bab MD |
1351 | memset(&rq, 0, sizeof(rq)); |
1352 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1353 | ||
02b23da7 JR |
1354 | /* |
1355 | * Merge the cmd and connection request to prevent a write-write | |
1356 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1357 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1358 | */ | |
1359 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1360 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1361 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1362 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1363 | viewer_handle_send_status(self_comp, NULL, | |
1364 | viewer_status, "get next index command"); | |
7cdc2bab MD |
1365 | goto error; |
1366 | } | |
7cdc2bab | 1367 | |
8dd99d00 FD |
1368 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1369 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1370 | viewer_handle_recv_status(self_comp, NULL, | |
1371 | viewer_status, "get next index reply"); | |
7cdc2bab MD |
1372 | goto error; |
1373 | } | |
7cdc2bab MD |
1374 | |
1375 | flags = be32toh(rp.flags); | |
8dd99d00 | 1376 | rp_status = be32toh(rp.status); |
7cdc2bab | 1377 | |
8dd99d00 | 1378 | switch (rp_status) { |
7cdc2bab MD |
1379 | case LTTNG_VIEWER_INDEX_INACTIVE: |
1380 | { | |
1381 | uint64_t ctf_stream_class_id; | |
1382 | ||
f6e2a9d2 | 1383 | BT_COMP_LOGD("Received get_next_index response: inactive"); |
7cdc2bab MD |
1384 | memset(index, 0, sizeof(struct packet_index)); |
1385 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
bb18709b | 1386 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1387 | ctf_stream_class_id = be64toh(rp.stream_id); |
1388 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1389 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1390 | ctf_stream_class_id); |
1391 | } else { | |
1392 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1393 | } | |
1394 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
8dd99d00 | 1395 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1396 | break; |
1397 | } | |
1398 | case LTTNG_VIEWER_INDEX_OK: | |
1399 | { | |
1400 | uint64_t ctf_stream_class_id; | |
1401 | ||
f6e2a9d2 | 1402 | BT_COMP_LOGD("Received get_next_index response: OK"); |
7cdc2bab MD |
1403 | lttng_index_to_packet_index(&rp, index); |
1404 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1405 | if (stream->ctf_stream_class_id != -1ULL) { | |
8b45963b | 1406 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1407 | ctf_stream_class_id); |
1408 | } else { | |
1409 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1410 | } | |
1411 | ||
1412 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1413 | |
1414 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
f6e2a9d2 | 1415 | BT_COMP_LOGD("Received get_next_index response: new metadata needed"); |
7cdc2bab MD |
1416 | trace->new_metadata_needed = true; |
1417 | } | |
1418 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
f6e2a9d2 | 1419 | BT_COMP_LOGD("Received get_next_index response: new streams needed"); |
bb18709b | 1420 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab | 1421 | } |
8dd99d00 | 1422 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1423 | break; |
1424 | } | |
1425 | case LTTNG_VIEWER_INDEX_RETRY: | |
f6e2a9d2 | 1426 | BT_COMP_LOGD("Received get_next_index response: retry"); |
7cdc2bab | 1427 | memset(index, 0, sizeof(struct packet_index)); |
7cdc2bab | 1428 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
8dd99d00 | 1429 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1430 | goto end; |
1431 | case LTTNG_VIEWER_INDEX_HUP: | |
f6e2a9d2 | 1432 | BT_COMP_LOGD("Received get_next_index response: stream hung up"); |
7cdc2bab MD |
1433 | memset(index, 0, sizeof(struct packet_index)); |
1434 | index->offset = EOF; | |
7cdc2bab | 1435 | stream->state = LTTNG_LIVE_STREAM_EOF; |
5b337d32 | 1436 | stream->has_stream_hung_up = true; |
8dd99d00 | 1437 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1438 | break; |
1439 | case LTTNG_VIEWER_INDEX_ERR: | |
f6e2a9d2 | 1440 | BT_COMP_LOGD("Received get_next_index response: error"); |
7cdc2bab MD |
1441 | memset(index, 0, sizeof(struct packet_index)); |
1442 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
8dd99d00 FD |
1443 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1444 | goto end; | |
7cdc2bab | 1445 | default: |
f6e2a9d2 | 1446 | BT_COMP_LOGD("Received get_next_index response: unknown value"); |
7cdc2bab MD |
1447 | memset(index, 0, sizeof(struct packet_index)); |
1448 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
8dd99d00 FD |
1449 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1450 | goto end; | |
7cdc2bab | 1451 | } |
8dd99d00 | 1452 | goto end; |
7cdc2bab MD |
1453 | |
1454 | error: | |
8dd99d00 FD |
1455 | status = viewer_status_to_live_iterator_status(viewer_status); |
1456 | end: | |
1457 | return status; | |
7cdc2bab MD |
1458 | } |
1459 | ||
1460 | BT_HIDDEN | |
5d452e1f | 1461 | enum ctf_msg_iter_medium_status lttng_live_get_stream_bytes( |
bb18709b FD |
1462 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1463 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1464 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1465 | { |
8dd99d00 FD |
1466 | enum ctf_msg_iter_medium_status status; |
1467 | enum lttng_live_viewer_status viewer_status; | |
0b6986b4 | 1468 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1469 | struct lttng_viewer_cmd cmd; |
1470 | struct lttng_viewer_get_packet rq; | |
bb18709b | 1471 | struct live_viewer_connection *viewer_connection = |
f6e2a9d2 FD |
1472 | lttng_live_msg_iter->viewer_connection; |
1473 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1474 | struct lttng_live_trace *trace = stream->trace; |
02b23da7 JR |
1475 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1476 | char cmd_buf[cmd_buf_len]; | |
8dd99d00 | 1477 | uint32_t flags, rp_status; |
7cdc2bab | 1478 | |
5278d5ba | 1479 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1480 | offset, req_len); |
1481 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1482 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1483 | cmd.cmd_version = htobe32(0); | |
1484 | ||
1485 | memset(&rq, 0, sizeof(rq)); | |
1486 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1487 | rq.offset = htobe64(offset); | |
1488 | rq.len = htobe32(req_len); | |
1489 | ||
02b23da7 JR |
1490 | /* |
1491 | * Merge the cmd and connection request to prevent a write-write | |
1492 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1493 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1494 | */ | |
1495 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1496 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1497 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1498 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1499 | viewer_handle_send_status(self_comp, NULL, | |
1500 | viewer_status, "get data packet command"); | |
7cdc2bab MD |
1501 | goto error; |
1502 | } | |
7cdc2bab | 1503 | |
8dd99d00 FD |
1504 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1505 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1506 | viewer_handle_recv_status(self_comp, NULL, | |
1507 | viewer_status, "get data packet reply"); | |
7cdc2bab MD |
1508 | goto error; |
1509 | } | |
1510 | ||
1511 | flags = be32toh(rp.flags); | |
8dd99d00 | 1512 | rp_status = be32toh(rp.status); |
7cdc2bab | 1513 | |
8dd99d00 | 1514 | switch (rp_status) { |
7cdc2bab MD |
1515 | case LTTNG_VIEWER_GET_PACKET_OK: |
1516 | req_len = be32toh(rp.len); | |
f6e2a9d2 FD |
1517 | BT_COMP_LOGD("Received get_data_packet response: Ok, " |
1518 | "packet size : %" PRIu64 "", req_len); | |
8dd99d00 | 1519 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
1520 | break; |
1521 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1522 | /* Unimplemented by relay daemon */ | |
f6e2a9d2 | 1523 | BT_COMP_LOGD("Received get_data_packet response: retry"); |
8dd99d00 | 1524 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1525 | goto end; |
1526 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1527 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
5278d5ba | 1528 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1529 | trace->new_metadata_needed = true; |
1530 | } | |
1531 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
5278d5ba | 1532 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
bb18709b | 1533 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1534 | } |
1535 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1536 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
8dd99d00 | 1537 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1538 | goto end; |
1539 | } | |
f6e2a9d2 FD |
1540 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1541 | "Received get_data_packet response: error"); | |
8dd99d00 FD |
1542 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
1543 | goto end; | |
7cdc2bab | 1544 | case LTTNG_VIEWER_GET_PACKET_EOF: |
8dd99d00 | 1545 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1546 | goto end; |
1547 | default: | |
f6e2a9d2 FD |
1548 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1549 | "Received get_data_packet response: unknown"); | |
8dd99d00 | 1550 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
7cdc2bab MD |
1551 | goto error; |
1552 | } | |
1553 | ||
1554 | if (req_len == 0) { | |
8dd99d00 | 1555 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
7cdc2bab MD |
1556 | goto error; |
1557 | } | |
1558 | ||
8dd99d00 FD |
1559 | viewer_status = lttng_live_recv(viewer_connection, buf, req_len); |
1560 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1561 | viewer_handle_recv_status(self_comp, NULL, | |
1562 | viewer_status, "get data packet"); | |
7cdc2bab MD |
1563 | goto error; |
1564 | } | |
8dd99d00 | 1565 | *recv_len = req_len; |
7cdc2bab | 1566 | |
8dd99d00 FD |
1567 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
1568 | goto end; | |
7cdc2bab | 1569 | error: |
8dd99d00 FD |
1570 | |
1571 | status = viewer_status_to_ctf_msg_iter_medium_status(viewer_status); | |
1572 | end: | |
1573 | return status; | |
7cdc2bab MD |
1574 | } |
1575 | ||
1576 | /* | |
1577 | * Request new streams for a session. | |
1578 | */ | |
1579 | BT_HIDDEN | |
bb18709b | 1580 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
2428e031 SM |
1581 | struct lttng_live_session *session, |
1582 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1583 | { |
bb18709b FD |
1584 | enum lttng_live_iterator_status status = |
1585 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1586 | struct lttng_viewer_cmd cmd; |
1587 | struct lttng_viewer_new_streams_request rq; | |
1588 | struct lttng_viewer_new_streams_response rp; | |
bb18709b FD |
1589 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1590 | session->lttng_live_msg_iter; | |
8dd99d00 | 1591 | enum lttng_live_viewer_status viewer_status; |
bb18709b FD |
1592 | struct live_viewer_connection *viewer_connection = |
1593 | lttng_live_msg_iter->viewer_connection; | |
f6e2a9d2 | 1594 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 1595 | uint32_t streams_count; |
02b23da7 JR |
1596 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1597 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1598 | |
1599 | if (!session->new_streams_needed) { | |
8dd99d00 FD |
1600 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1601 | goto end; | |
7cdc2bab MD |
1602 | } |
1603 | ||
1604 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1605 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1606 | cmd.cmd_version = htobe32(0); | |
1607 | ||
1608 | memset(&rq, 0, sizeof(rq)); | |
1609 | rq.session_id = htobe64(session->id); | |
1610 | ||
02b23da7 JR |
1611 | /* |
1612 | * Merge the cmd and connection request to prevent a write-write | |
1613 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1614 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1615 | */ | |
1616 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1617 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
8dd99d00 FD |
1618 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1619 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1620 | viewer_handle_send_status(self_comp, NULL, | |
1621 | viewer_status, "get new streams command"); | |
1622 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1623 | goto end; | |
7cdc2bab | 1624 | } |
7cdc2bab | 1625 | |
8dd99d00 FD |
1626 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1627 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1628 | viewer_handle_recv_status(self_comp, NULL, | |
1629 | viewer_status, "get new streams reply"); | |
1630 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1631 | goto end; | |
7cdc2bab | 1632 | } |
7cdc2bab MD |
1633 | |
1634 | streams_count = be32toh(rp.streams_count); | |
1635 | ||
1636 | switch(be32toh(rp.status)) { | |
1637 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1638 | session->new_streams_needed = false; | |
1639 | break; | |
1640 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1641 | session->new_streams_needed = false; | |
1642 | goto end; | |
1643 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1644 | session->new_streams_needed = false; | |
1645 | session->closed = true; | |
bb18709b | 1646 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1647 | goto end; |
1648 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
f6e2a9d2 | 1649 | BT_COMP_LOGD("Received get_new_streams response: error"); |
8dd99d00 FD |
1650 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1651 | goto end; | |
7cdc2bab | 1652 | default: |
f6e2a9d2 FD |
1653 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1654 | "Received get_new_streams response: Unknown:" | |
1655 | "return code %u", be32toh(rp.status)); | |
8dd99d00 FD |
1656 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1657 | goto end; | |
7cdc2bab MD |
1658 | } |
1659 | ||
8dd99d00 FD |
1660 | viewer_status = receive_streams(session, streams_count, self_msg_iter); |
1661 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1662 | viewer_handle_recv_status(self_comp, NULL, | |
1663 | viewer_status, "new streams"); | |
1664 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1665 | goto end; | |
7cdc2bab | 1666 | } |
7cdc2bab | 1667 | |
8dd99d00 FD |
1668 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1669 | end: | |
7cdc2bab MD |
1670 | return status; |
1671 | } | |
1672 | ||
1673 | BT_HIDDEN | |
8dd99d00 | 1674 | enum lttng_live_viewer_status live_viewer_connection_create( |
f6e2a9d2 FD |
1675 | bt_self_component *self_comp, |
1676 | bt_self_component_class *self_comp_class, | |
8dd99d00 FD |
1677 | bt_logging_level log_level, |
1678 | const char *url, bool in_query, | |
1679 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1680 | struct live_viewer_connection **viewer) | |
7cdc2bab | 1681 | { |
bb18709b | 1682 | struct live_viewer_connection *viewer_connection; |
8dd99d00 | 1683 | enum lttng_live_viewer_status status; |
7cdc2bab | 1684 | |
bb18709b | 1685 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1686 | |
ca06281d | 1687 | if (bt_socket_init(log_level) != 0) { |
f6e2a9d2 FD |
1688 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1689 | self_comp_class, "Failed to init socket"); | |
8dd99d00 | 1690 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
a2147eb2 MJ |
1691 | goto error; |
1692 | } | |
1693 | ||
ca06281d PP |
1694 | viewer_connection->log_level = log_level; |
1695 | ||
f6e2a9d2 FD |
1696 | viewer_connection->self_comp = self_comp; |
1697 | viewer_connection->self_comp_class = self_comp_class; | |
ca06281d | 1698 | |
a2147eb2 | 1699 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1700 | viewer_connection->port = -1; |
bb18709b FD |
1701 | viewer_connection->in_query = in_query; |
1702 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1703 | viewer_connection->url = g_string_new(url); |
1704 | if (!viewer_connection->url) { | |
f6e2a9d2 FD |
1705 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1706 | self_comp_class, "Failed to allocate URL buffer"); | |
8dd99d00 | 1707 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
1708 | goto error; |
1709 | } | |
1710 | ||
5278d5ba | 1711 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
8dd99d00 FD |
1712 | status = lttng_live_connect_viewer(viewer_connection); |
1713 | /* | |
1714 | * Only print error and append cause in case of error. not in case of | |
1715 | * interruption. | |
1716 | */ | |
1717 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
f6e2a9d2 FD |
1718 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1719 | self_comp_class, "Failed to establish connection: " | |
1720 | "url=\"%s\"", url); | |
1721 | goto error; | |
8dd99d00 FD |
1722 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
1723 | goto error; | |
7cdc2bab | 1724 | } |
5278d5ba | 1725 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
8dd99d00 FD |
1726 | |
1727 | *viewer = viewer_connection; | |
1728 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
1729 | goto end; | |
7cdc2bab | 1730 | |
7cdc2bab | 1731 | error: |
487e99c4 PP |
1732 | if (viewer_connection) { |
1733 | live_viewer_connection_destroy(viewer_connection); | |
1734 | } | |
8dd99d00 FD |
1735 | end: |
1736 | return status; | |
7cdc2bab MD |
1737 | } |
1738 | ||
1739 | BT_HIDDEN | |
bb18709b FD |
1740 | void live_viewer_connection_destroy( |
1741 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1742 | { |
5278d5ba | 1743 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
31ee2162 FD |
1744 | |
1745 | if (!viewer_connection) { | |
1746 | goto end; | |
1747 | } | |
1748 | ||
7cdc2bab | 1749 | lttng_live_disconnect_viewer(viewer_connection); |
31ee2162 | 1750 | |
487e99c4 PP |
1751 | if (viewer_connection->url) { |
1752 | g_string_free(viewer_connection->url, true); | |
1753 | } | |
31ee2162 | 1754 | |
94b828f3 | 1755 | if (viewer_connection->relay_hostname) { |
bb18709b | 1756 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 | 1757 | } |
31ee2162 | 1758 | |
94b828f3 | 1759 | if (viewer_connection->target_hostname) { |
bb18709b | 1760 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 | 1761 | } |
31ee2162 | 1762 | |
94b828f3 | 1763 | if (viewer_connection->session_name) { |
bb18709b | 1764 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1765 | } |
31ee2162 | 1766 | |
7cdc2bab | 1767 | g_free(viewer_connection); |
a2147eb2 MJ |
1768 | |
1769 | bt_socket_fini(); | |
31ee2162 FD |
1770 | |
1771 | end: | |
1772 | return; | |
7cdc2bab | 1773 | } |