Commit | Line | Data |
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7cdc2bab | 1 | /* |
0235b0db | 2 | * SPDX-License-Identifier: MIT |
7cdc2bab | 3 | * |
0235b0db MJ |
4 | * Copyright 2019 Francis Deslauriers <francis.deslauriers@efficios.com> |
5 | * Copyright 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
7cdc2bab MD |
6 | */ |
7 | ||
2ece7dd0 | 8 | #define BT_COMP_LOG_SELF_COMP (viewer_connection->self_comp) |
c01594de | 9 | #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level) |
350ad6c1 | 10 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER" |
d9c39b0a | 11 | #include "logging/comp-logging.h" |
020bc26f | 12 | |
3c22a242 FD |
13 | #include <fcntl.h> |
14 | #include <stdbool.h> | |
7cdc2bab | 15 | #include <stdint.h> |
3c22a242 | 16 | #include <stdio.h> |
7cdc2bab | 17 | #include <stdlib.h> |
3c22a242 | 18 | #include <sys/types.h> |
7cdc2bab | 19 | #include <unistd.h> |
3c22a242 | 20 | |
7cdc2bab | 21 | #include <glib.h> |
7cdc2bab | 22 | |
578e048b MJ |
23 | #include "compat/socket.h" |
24 | #include "compat/endian.h" | |
25 | #include "compat/compiler.h" | |
26 | #include "common/common.h" | |
3fadfbc0 | 27 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 28 | |
14f28187 | 29 | #include "lttng-live.h" |
7cdc2bab MD |
30 | #include "viewer-connection.h" |
31 | #include "lttng-viewer-abi.h" | |
32 | #include "data-stream.h" | |
33 | #include "metadata.h" | |
34 | ||
f79c2d7a FD |
35 | #define viewer_handle_send_recv_status(_self_comp, _self_comp_class, \ |
36 | _status, _action, _msg_str) \ | |
37 | do { \ | |
38 | switch (_status) { \ | |
39 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: \ | |
40 | break; \ | |
41 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: \ | |
42 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, \ | |
43 | _self_comp_class, "Error " _action " " _msg_str); \ | |
44 | break; \ | |
45 | default: \ | |
46 | bt_common_abort(); \ | |
47 | } \ | |
48 | } while (0) | |
49 | ||
50 | #define viewer_handle_send_status(_self_comp, _self_comp_class, _status, _msg_str) \ | |
51 | viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \ | |
52 | "sending", _msg_str) | |
53 | ||
54 | #define viewer_handle_recv_status(_self_comp, _self_comp_class, _status, _msg_str) \ | |
55 | viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \ | |
56 | "receiving", _msg_str) | |
57 | ||
58 | #define LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(_self_comp, \ | |
59 | _self_comp_class, _msg, _fmt, ...) \ | |
60 | do { \ | |
61 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, _self_comp_class, \ | |
62 | _msg ": %s" _fmt, bt_socket_errormsg(), ##__VA_ARGS__); \ | |
63 | } while (0) | |
64 | ||
f93afbf9 FD |
65 | static |
66 | const char *lttng_viewer_command_string(enum lttng_viewer_command cmd) | |
67 | { | |
68 | switch (cmd){ | |
69 | case LTTNG_VIEWER_CONNECT: | |
70 | return "CONNECT"; | |
71 | case LTTNG_VIEWER_LIST_SESSIONS: | |
72 | return "LIST_SESSIONS"; | |
73 | case LTTNG_VIEWER_ATTACH_SESSION: | |
74 | return "ATTACH_SESSION"; | |
75 | case LTTNG_VIEWER_GET_NEXT_INDEX: | |
76 | return "GET_NEXT_INDEX"; | |
77 | case LTTNG_VIEWER_GET_PACKET: | |
78 | return "GET_PACKET"; | |
79 | case LTTNG_VIEWER_GET_METADATA: | |
80 | return "GET_METADATA"; | |
81 | case LTTNG_VIEWER_GET_NEW_STREAMS: | |
82 | return "GET_NEW_STREAMS"; | |
83 | case LTTNG_VIEWER_CREATE_SESSION: | |
84 | return "CREATE_SESSION"; | |
85 | case LTTNG_VIEWER_DETACH_SESSION: | |
86 | return "DETACH_SESSION"; | |
87 | } | |
88 | ||
89 | bt_common_abort(); | |
90 | } | |
91 | ||
92 | static | |
93 | const char *lttng_viewer_next_index_return_code_string( | |
94 | enum lttng_viewer_next_index_return_code code) | |
95 | { | |
96 | switch (code) { | |
97 | case LTTNG_VIEWER_INDEX_OK: | |
98 | return "INDEX_OK"; | |
99 | case LTTNG_VIEWER_INDEX_RETRY: | |
100 | return "INDEX_RETRY"; | |
101 | case LTTNG_VIEWER_INDEX_HUP: | |
102 | return "INDEX_HUP"; | |
103 | case LTTNG_VIEWER_INDEX_ERR: | |
104 | return "INDEX_ERR"; | |
105 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
106 | return "INDEX_INACTIVE"; | |
107 | case LTTNG_VIEWER_INDEX_EOF: | |
108 | return "INDEX_EOF"; | |
109 | } | |
110 | ||
111 | bt_common_abort(); | |
112 | } | |
113 | ||
114 | static | |
115 | const char *lttng_viewer_get_packet_return_code_string( | |
116 | enum lttng_viewer_get_packet_return_code code) | |
117 | { | |
118 | switch (code) { | |
119 | case LTTNG_VIEWER_GET_PACKET_OK: | |
120 | return "GET_PACKET_OK"; | |
121 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
122 | return "GET_PACKET_RETRY"; | |
123 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
124 | return "GET_PACKET_ERR"; | |
125 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
126 | return "GET_PACKET_EOF"; | |
127 | } | |
128 | ||
129 | bt_common_abort(); | |
130 | }; | |
131 | ||
132 | static | |
133 | const char *lttng_viewer_seek_string(enum lttng_viewer_seek seek) | |
134 | { | |
135 | switch (seek) { | |
136 | case LTTNG_VIEWER_SEEK_BEGINNING: | |
137 | return "SEEK_BEGINNING"; | |
138 | case LTTNG_VIEWER_SEEK_LAST: | |
139 | return "SEEK_LAST"; | |
140 | } | |
141 | ||
142 | bt_common_abort(); | |
143 | } | |
144 | ||
f79c2d7a FD |
145 | static inline |
146 | enum lttng_live_iterator_status viewer_status_to_live_iterator_status( | |
147 | enum lttng_live_viewer_status viewer_status) | |
148 | { | |
149 | switch (viewer_status) { | |
150 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
151 | return LTTNG_LIVE_ITERATOR_STATUS_OK; | |
152 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
153 | return LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
154 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
155 | return LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
f79c2d7a | 156 | } |
f93afbf9 FD |
157 | |
158 | bt_common_abort(); | |
f79c2d7a FD |
159 | } |
160 | ||
161 | static inline | |
162 | enum ctf_msg_iter_medium_status viewer_status_to_ctf_msg_iter_medium_status( | |
163 | enum lttng_live_viewer_status viewer_status) | |
164 | { | |
165 | switch (viewer_status) { | |
166 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
167 | return CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
168 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
169 | return CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
170 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
171 | return CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
f79c2d7a | 172 | } |
f93afbf9 FD |
173 | |
174 | bt_common_abort(); | |
f79c2d7a FD |
175 | } |
176 | ||
b197ca37 FD |
177 | static inline |
178 | void viewer_connection_close_socket( | |
179 | struct live_viewer_connection *viewer_connection) | |
180 | { | |
181 | bt_self_component_class *self_comp_class = | |
182 | viewer_connection->self_comp_class; | |
183 | bt_self_component *self_comp = | |
184 | viewer_connection->self_comp; | |
185 | int ret = bt_socket_close(viewer_connection->control_sock); | |
186 | if (ret == -1) { | |
187 | BT_COMP_OR_COMP_CLASS_LOGW_ERRNO( | |
188 | self_comp, self_comp_class, | |
189 | "Error closing viewer connection socket: ", "."); | |
190 | } | |
191 | ||
192 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
193 | } | |
194 | ||
f79c2d7a FD |
195 | /* |
196 | * This function receives a message from the Relay daemon. | |
197 | * If it received the entire message, it returns _OK, | |
198 | * If it's interrupted, it returns _INTERRUPTED, | |
199 | * otherwise, it returns _ERROR. | |
200 | */ | |
14f28187 | 201 | static |
f79c2d7a FD |
202 | enum lttng_live_viewer_status lttng_live_recv( |
203 | struct live_viewer_connection *viewer_connection, | |
4c66436f | 204 | void *buf, size_t len) |
7cdc2bab | 205 | { |
f79c2d7a FD |
206 | ssize_t received; |
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; | |
211 | size_t total_received = 0, to_receive = len; | |
14f28187 FD |
212 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
213 | viewer_connection->lttng_live_msg_iter; | |
f79c2d7a | 214 | enum lttng_live_viewer_status status; |
1cb3cdd7 | 215 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab | 216 | |
f79c2d7a FD |
217 | /* |
218 | * Receive a message from the Relay. | |
219 | */ | |
7cdc2bab | 220 | do { |
f79c2d7a FD |
221 | received = bt_socket_recv(sock, buf + total_received, to_receive, 0); |
222 | if (received == BT_SOCKET_ERROR) { | |
223 | if (bt_socket_interrupted()) { | |
224 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
225 | /* | |
226 | * This interruption was due to a | |
227 | * SIGINT and the graph is being torn | |
228 | * down. | |
229 | */ | |
230 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
231 | lttng_live_msg_iter->was_interrupted = true; | |
232 | goto end; | |
233 | } else { | |
234 | /* | |
235 | * A signal was received, but the graph | |
236 | * is not being torn down. Carry on. | |
237 | */ | |
238 | continue; | |
239 | } | |
4c66436f | 240 | } else { |
f79c2d7a | 241 | /* |
b197ca37 FD |
242 | * For any other types of socket error, close |
243 | * the socket and return an error. | |
f79c2d7a FD |
244 | */ |
245 | LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO( | |
246 | self_comp, self_comp_class, | |
247 | "Error receiving from Relay", "."); | |
b197ca37 FD |
248 | |
249 | viewer_connection_close_socket(viewer_connection); | |
f79c2d7a FD |
250 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
251 | goto end; | |
4c66436f | 252 | } |
f79c2d7a FD |
253 | } else if (received == 0) { |
254 | /* | |
255 | * The recv() call returned 0. This means the | |
256 | * connection was orderly shutdown from the other peer. | |
257 | * If that happens when we are trying to receive | |
258 | * a message from it, it means something when wrong. | |
b197ca37 | 259 | * Close the socket and return an error. |
f79c2d7a | 260 | */ |
f79c2d7a FD |
261 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
262 | self_comp_class, "Remote side has closed connection"); | |
b197ca37 FD |
263 | viewer_connection_close_socket(viewer_connection); |
264 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
f79c2d7a | 265 | goto end; |
4c66436f | 266 | } |
710d900e | 267 | |
f79c2d7a FD |
268 | BT_ASSERT(received <= to_receive); |
269 | total_received += received; | |
270 | to_receive -= received; | |
710d900e | 271 | |
f79c2d7a FD |
272 | } while (to_receive > 0); |
273 | ||
274 | BT_ASSERT(total_received == len); | |
275 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
276 | ||
277 | end: | |
278 | return status; | |
7cdc2bab MD |
279 | } |
280 | ||
f79c2d7a FD |
281 | /* |
282 | * This function sends a message to the Relay daemon. | |
283 | * If it send the message, it returns _OK, | |
284 | * If it's interrupted, it returns _INTERRUPTED, | |
285 | * otherwise, it returns _ERROR. | |
286 | */ | |
14f28187 | 287 | static |
f79c2d7a FD |
288 | enum lttng_live_viewer_status lttng_live_send( |
289 | struct live_viewer_connection *viewer_connection, | |
4c66436f | 290 | const void *buf, size_t len) |
7cdc2bab | 291 | { |
f79c2d7a FD |
292 | enum lttng_live_viewer_status status; |
293 | bt_self_component_class *self_comp_class = | |
294 | viewer_connection->self_comp_class; | |
295 | bt_self_component *self_comp = | |
296 | viewer_connection->self_comp; | |
14f28187 FD |
297 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
298 | viewer_connection->lttng_live_msg_iter; | |
1cb3cdd7 | 299 | BT_SOCKET sock = viewer_connection->control_sock; |
f79c2d7a FD |
300 | size_t to_send = len; |
301 | ssize_t total_sent = 0; | |
302 | ||
303 | do { | |
304 | ssize_t sent = bt_socket_send_nosigpipe(sock, buf + total_sent, | |
305 | to_send); | |
306 | if (sent == BT_SOCKET_ERROR) { | |
307 | if (bt_socket_interrupted()) { | |
308 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
309 | /* | |
310 | * This interruption was a SIGINT and | |
311 | * the graph is being teared down. | |
312 | */ | |
313 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
314 | lttng_live_msg_iter->was_interrupted = true; | |
315 | goto end; | |
316 | } else { | |
317 | /* | |
318 | * A signal was received, but the graph | |
319 | * is not being teared down. Carry on. | |
320 | */ | |
321 | continue; | |
322 | } | |
4c66436f | 323 | } else { |
f79c2d7a | 324 | /* |
b197ca37 FD |
325 | * For any other types of socket error, close |
326 | * the socket and return an error. | |
f79c2d7a FD |
327 | */ |
328 | LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO( | |
329 | self_comp, self_comp_class, | |
330 | "Error sending to Relay", "."); | |
b197ca37 FD |
331 | |
332 | viewer_connection_close_socket(viewer_connection); | |
f79c2d7a FD |
333 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
334 | goto end; | |
4c66436f | 335 | } |
4c66436f | 336 | } |
f79c2d7a FD |
337 | |
338 | BT_ASSERT(sent <= to_send); | |
339 | total_sent += sent; | |
340 | to_send -= sent; | |
341 | ||
342 | } while (to_send > 0); | |
343 | ||
344 | BT_ASSERT(total_sent == len); | |
345 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
346 | ||
347 | end: | |
348 | return status; | |
7cdc2bab MD |
349 | } |
350 | ||
14f28187 FD |
351 | static |
352 | int parse_url(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 353 | { |
94b828f3 | 354 | char error_buf[256] = { 0 }; |
1419db2b FD |
355 | bt_self_component *self_comp = viewer_connection->self_comp; |
356 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; | |
94b828f3 MD |
357 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; |
358 | int ret = -1; | |
7cdc2bab | 359 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
360 | |
361 | if (!path) { | |
362 | goto end; | |
363 | } | |
7cdc2bab | 364 | |
0f1979c3 FD |
365 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, error_buf, |
366 | sizeof(error_buf)); | |
94b828f3 | 367 | if (!lttng_live_url_parts.proto) { |
1419db2b FD |
368 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
369 | self_comp_class,"Invalid LTTng live URL format: %s", | |
370 | error_buf); | |
7cdc2bab MD |
371 | goto end; |
372 | } | |
ecb4ba8a FD |
373 | viewer_connection->proto = lttng_live_url_parts.proto; |
374 | lttng_live_url_parts.proto = NULL; | |
7cdc2bab | 375 | |
0f1979c3 | 376 | viewer_connection->relay_hostname = lttng_live_url_parts.hostname; |
94b828f3 MD |
377 | lttng_live_url_parts.hostname = NULL; |
378 | ||
379 | if (lttng_live_url_parts.port >= 0) { | |
380 | viewer_connection->port = lttng_live_url_parts.port; | |
381 | } else { | |
7cdc2bab MD |
382 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
383 | } | |
384 | ||
0f1979c3 | 385 | viewer_connection->target_hostname = lttng_live_url_parts.target_hostname; |
94b828f3 MD |
386 | lttng_live_url_parts.target_hostname = NULL; |
387 | ||
388 | if (lttng_live_url_parts.session_name) { | |
0f1979c3 | 389 | viewer_connection->session_name = lttng_live_url_parts.session_name; |
94b828f3 | 390 | lttng_live_url_parts.session_name = NULL; |
7cdc2bab MD |
391 | } |
392 | ||
7cdc2bab MD |
393 | ret = 0; |
394 | ||
395 | end: | |
94b828f3 | 396 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
397 | return ret; |
398 | } | |
399 | ||
14f28187 | 400 | static |
f79c2d7a FD |
401 | enum lttng_live_viewer_status lttng_live_handshake( |
402 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
403 | { |
404 | struct lttng_viewer_cmd cmd; | |
405 | struct lttng_viewer_connect connect; | |
f79c2d7a | 406 | enum lttng_live_viewer_status status; |
1419db2b FD |
407 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
408 | bt_self_component *self_comp = viewer_connection->self_comp; | |
bdcbd52e JR |
409 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
410 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 411 | |
ecb4ba8a | 412 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
f93afbf9 FD |
413 | "Handshaking with the relay daemon: cmd=%s, major-version=%u, minor-version=%u", |
414 | lttng_viewer_command_string(LTTNG_VIEWER_CONNECT), LTTNG_LIVE_MAJOR, | |
415 | LTTNG_LIVE_MINOR); | |
ecb4ba8a | 416 | |
7cdc2bab MD |
417 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); |
418 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
419 | cmd.cmd_version = htobe32(0); | |
420 | ||
421 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
422 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
423 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
424 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
425 | ||
bdcbd52e JR |
426 | /* |
427 | * Merge the cmd and connection request to prevent a write-write | |
428 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
429 | * second write to be performed quickly in presence of Nagle's algorithm | |
430 | */ | |
431 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
432 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
7cdc2bab | 433 | |
f79c2d7a FD |
434 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
435 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
436 | viewer_handle_send_status(self_comp, self_comp_class, | |
437 | status, "viewer connect command"); | |
438 | goto end; | |
7cdc2bab | 439 | } |
f79c2d7a FD |
440 | |
441 | status = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); | |
442 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
443 | viewer_handle_recv_status(self_comp, self_comp_class, | |
444 | status, "viewer connect reply"); | |
445 | goto end; | |
7cdc2bab | 446 | } |
7cdc2bab | 447 | |
ecb4ba8a FD |
448 | BT_COMP_OR_COMP_CLASS_LOGI(self_comp, self_comp_class, |
449 | "Received viewer session ID : %" PRIu64, | |
450 | (uint64_t) be64toh(connect.viewer_session_id)); | |
451 | BT_COMP_OR_COMP_CLASS_LOGI(self_comp, self_comp_class, | |
452 | "Relayd version : %u.%u", be32toh(connect.major), | |
453 | be32toh(connect.minor)); | |
7cdc2bab MD |
454 | |
455 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
1419db2b FD |
456 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
457 | self_comp_class, "Incompatible lttng-relayd protocol"); | |
f79c2d7a FD |
458 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
459 | goto end; | |
7cdc2bab MD |
460 | } |
461 | /* Use the smallest protocol version implemented. */ | |
462 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
463 | viewer_connection->minor = be32toh(connect.minor); | |
464 | } else { | |
465 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
466 | } | |
467 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
7cdc2bab | 468 | |
f79c2d7a FD |
469 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
470 | ||
471 | goto end; | |
472 | ||
473 | end: | |
474 | return status; | |
7cdc2bab MD |
475 | } |
476 | ||
14f28187 | 477 | static |
f79c2d7a | 478 | enum lttng_live_viewer_status lttng_live_connect_viewer( |
36e94ad6 | 479 | struct live_viewer_connection *viewer_connection) |
7cdc2bab MD |
480 | { |
481 | struct hostent *host; | |
482 | struct sockaddr_in server_addr; | |
f79c2d7a | 483 | enum lttng_live_viewer_status status; |
1419db2b FD |
484 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
485 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
486 | |
487 | if (parse_url(viewer_connection)) { | |
1419db2b FD |
488 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
489 | self_comp_class, "Failed to parse URL"); | |
f79c2d7a | 490 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
491 | goto error; |
492 | } | |
493 | ||
ecb4ba8a FD |
494 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
495 | "Connecting to hostname : %s, port : %d, " | |
496 | "target hostname : %s, session name : %s, proto : %s", | |
497 | viewer_connection->relay_hostname->str, | |
498 | viewer_connection->port, | |
499 | !viewer_connection->target_hostname ? | |
500 | "<none>" : viewer_connection->target_hostname->str, | |
501 | !viewer_connection->session_name ? | |
502 | "<none>" : viewer_connection->session_name->str, | |
503 | viewer_connection->proto->str); | |
504 | ||
94b828f3 | 505 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 506 | if (!host) { |
1419db2b FD |
507 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
508 | self_comp_class, "Cannot lookup hostname: hostname=\"%s\"", | |
94b828f3 | 509 | viewer_connection->relay_hostname->str); |
f79c2d7a | 510 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
511 | goto error; |
512 | } | |
513 | ||
1cb3cdd7 | 514 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
1419db2b FD |
515 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
516 | self_comp_class, "Socket creation failed: %s", bt_socket_errormsg()); | |
f79c2d7a | 517 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
518 | goto error; |
519 | } | |
520 | ||
521 | server_addr.sin_family = AF_INET; | |
522 | server_addr.sin_port = htons(viewer_connection->port); | |
523 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
524 | memset(&(server_addr.sin_zero), 0, 8); | |
525 | ||
526 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
1cb3cdd7 | 527 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
1419db2b FD |
528 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
529 | self_comp_class, "Connection failed: %s", | |
530 | bt_socket_errormsg()); | |
f79c2d7a | 531 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
532 | goto error; |
533 | } | |
f79c2d7a FD |
534 | |
535 | status = lttng_live_handshake(viewer_connection); | |
536 | ||
537 | /* | |
538 | * Only print error and append cause in case of error. not in case of | |
539 | * interruption. | |
540 | */ | |
541 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
1419db2b FD |
542 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
543 | self_comp_class, "Viewer handshake failed"); | |
7cdc2bab | 544 | goto error; |
f79c2d7a FD |
545 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
546 | goto end; | |
7cdc2bab MD |
547 | } |
548 | ||
f79c2d7a | 549 | goto end; |
7cdc2bab MD |
550 | |
551 | error: | |
1cb3cdd7 MJ |
552 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
553 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
ecb4ba8a FD |
554 | BT_COMP_OR_COMP_CLASS_LOGW(self_comp, self_comp_class, |
555 | "Error closing socket: %s.", bt_socket_errormsg()); | |
7cdc2bab MD |
556 | } |
557 | } | |
1cb3cdd7 | 558 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
f79c2d7a FD |
559 | end: |
560 | return status; | |
7cdc2bab MD |
561 | } |
562 | ||
14f28187 FD |
563 | static |
564 | void lttng_live_disconnect_viewer( | |
565 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 566 | { |
ecb4ba8a FD |
567 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
568 | bt_self_component *self_comp = viewer_connection->self_comp; | |
569 | ||
1cb3cdd7 | 570 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
571 | return; |
572 | } | |
1cb3cdd7 | 573 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
ecb4ba8a FD |
574 | BT_COMP_OR_COMP_CLASS_LOGW(self_comp, self_comp_class, |
575 | "Error closing socket: %s", bt_socket_errormsg()); | |
1cb3cdd7 | 576 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
577 | } |
578 | } | |
579 | ||
7cdc2bab | 580 | static |
14f28187 | 581 | int list_update_session(bt_value *results, |
7cdc2bab | 582 | const struct lttng_viewer_session *session, |
c01594de | 583 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 584 | { |
1419db2b FD |
585 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
586 | bt_self_component *self_comp = viewer_connection->self_comp; | |
f80e9ec1 FD |
587 | int ret = 0; |
588 | uint64_t i, len; | |
b19ff26f PP |
589 | bt_value *map = NULL; |
590 | bt_value *hostname = NULL; | |
591 | bt_value *session_name = NULL; | |
592 | bt_value *btval = NULL; | |
7cdc2bab MD |
593 | bool found = false; |
594 | ||
393729a6 | 595 | len = bt_value_array_get_length(results); |
7cdc2bab MD |
596 | for (i = 0; i < len; i++) { |
597 | const char *hostname_str = NULL; | |
598 | const char *session_name_str = NULL; | |
599 | ||
f80e9ec1 | 600 | map = bt_value_array_borrow_element_by_index(results, i); |
14f28187 | 601 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 602 | if (!hostname) { |
1419db2b FD |
603 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
604 | self_comp_class, | |
605 | "Error borrowing \"target-hostname\" entry."); | |
14f28187 | 606 | ret = -1; |
7cdc2bab MD |
607 | goto end; |
608 | } | |
14f28187 | 609 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 610 | if (!session_name) { |
1419db2b FD |
611 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
612 | self_comp_class, | |
613 | "Error borrowing \"session-name\" entry."); | |
14f28187 | 614 | ret = -1; |
7cdc2bab MD |
615 | goto end; |
616 | } | |
601b0d3c PP |
617 | hostname_str = bt_value_string_get(hostname); |
618 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 619 | |
2242b43d PP |
620 | if (strcmp(session->hostname, hostname_str) == 0 |
621 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
622 | int64_t val; |
623 | uint32_t streams = be32toh(session->streams); | |
624 | uint32_t clients = be32toh(session->clients); | |
625 | ||
626 | found = true; | |
627 | ||
14f28187 | 628 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 629 | if (!btval) { |
1419db2b FD |
630 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
631 | self_comp, self_comp_class, | |
632 | "Error borrowing \"stream-count\" entry."); | |
14f28187 | 633 | ret = -1; |
7cdc2bab MD |
634 | goto end; |
635 | } | |
a91cb83e | 636 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
637 | /* sum */ |
638 | val += streams; | |
a91cb83e | 639 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 640 | |
14f28187 | 641 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 642 | if (!btval) { |
1419db2b FD |
643 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
644 | self_comp, self_comp_class, | |
645 | "Error borrowing \"client-count\" entry."); | |
14f28187 | 646 | ret = -1; |
7cdc2bab MD |
647 | goto end; |
648 | } | |
a91cb83e | 649 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 650 | /* max */ |
91d81473 | 651 | val = bt_max_t(int64_t, clients, val); |
a91cb83e | 652 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
653 | } |
654 | ||
7cdc2bab MD |
655 | if (found) { |
656 | break; | |
657 | } | |
658 | } | |
659 | end: | |
7cdc2bab MD |
660 | *_found = found; |
661 | return ret; | |
662 | } | |
663 | ||
664 | static | |
14f28187 | 665 | int list_append_session(bt_value *results, |
7cdc2bab | 666 | GString *base_url, |
c01594de PP |
667 | const struct lttng_viewer_session *session, |
668 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 669 | { |
14f28187 | 670 | int ret = 0; |
1419db2b | 671 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
d24d5663 PP |
672 | bt_value_map_insert_entry_status insert_status; |
673 | bt_value_array_append_element_status append_status; | |
b19ff26f | 674 | bt_value *map = NULL; |
7cdc2bab MD |
675 | GString *url = NULL; |
676 | bool found = false; | |
677 | ||
678 | /* | |
679 | * If the session already exists, add the stream count to it, | |
680 | * and do max of client counts. | |
681 | */ | |
c01594de | 682 | ret = list_update_session(results, session, &found, viewer_connection); |
14f28187 | 683 | if (ret || found) { |
7cdc2bab MD |
684 | goto end; |
685 | } | |
686 | ||
14f28187 | 687 | map = bt_value_map_create(); |
7cdc2bab | 688 | if (!map) { |
1419db2b FD |
689 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
690 | "Error creating map value."); | |
14f28187 | 691 | ret = -1; |
7cdc2bab MD |
692 | goto end; |
693 | } | |
694 | ||
695 | if (base_url->len < 1) { | |
1419db2b FD |
696 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
697 | "Error: base_url length smaller than 1."); | |
14f28187 | 698 | ret = -1; |
7cdc2bab MD |
699 | goto end; |
700 | } | |
701 | /* | |
702 | * key = "url", | |
703 | * value = <string>, | |
704 | */ | |
705 | url = g_string_new(base_url->str); | |
706 | g_string_append(url, "/host/"); | |
707 | g_string_append(url, session->hostname); | |
708 | g_string_append_c(url, '/'); | |
709 | g_string_append(url, session->session_name); | |
710 | ||
d24d5663 PP |
711 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
712 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
1419db2b FD |
713 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
714 | "Error inserting \"url\" entry."); | |
14f28187 | 715 | ret = -1; |
7cdc2bab MD |
716 | goto end; |
717 | } | |
718 | ||
719 | /* | |
720 | * key = "target-hostname", | |
721 | * value = <string>, | |
722 | */ | |
d24d5663 | 723 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 724 | session->hostname); |
d24d5663 | 725 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
726 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
727 | "Error inserting \"target-hostname\" entry."); | |
14f28187 | 728 | ret = -1; |
7cdc2bab MD |
729 | goto end; |
730 | } | |
731 | ||
732 | /* | |
733 | * key = "session-name", | |
734 | * value = <string>, | |
735 | */ | |
d24d5663 | 736 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 737 | session->session_name); |
d24d5663 | 738 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
739 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
740 | "Error inserting \"session-name\" entry."); | |
14f28187 | 741 | ret = -1; |
7cdc2bab MD |
742 | goto end; |
743 | } | |
744 | ||
745 | /* | |
746 | * key = "timer-us", | |
747 | * value = <integer>, | |
748 | */ | |
749 | { | |
750 | uint32_t live_timer = be32toh(session->live_timer); | |
751 | ||
a91cb83e | 752 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
fdd3a2da | 753 | map, "timer-us", live_timer); |
d24d5663 | 754 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
755 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
756 | "Error inserting \"timer-us\" entry."); | |
14f28187 | 757 | ret = -1; |
7cdc2bab MD |
758 | goto end; |
759 | } | |
760 | } | |
761 | ||
762 | /* | |
763 | * key = "stream-count", | |
764 | * value = <integer>, | |
765 | */ | |
766 | { | |
767 | uint32_t streams = be32toh(session->streams); | |
768 | ||
a91cb83e | 769 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 770 | "stream-count", streams); |
d24d5663 | 771 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
772 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
773 | "Error inserting \"stream-count\" entry."); | |
14f28187 | 774 | ret = -1; |
7cdc2bab MD |
775 | goto end; |
776 | } | |
777 | } | |
778 | ||
7cdc2bab MD |
779 | /* |
780 | * key = "client-count", | |
781 | * value = <integer>, | |
782 | */ | |
783 | { | |
784 | uint32_t clients = be32toh(session->clients); | |
785 | ||
a91cb83e | 786 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 787 | "client-count", clients); |
d24d5663 | 788 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
789 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
790 | "Error inserting \"client-count\" entry."); | |
14f28187 | 791 | ret = -1; |
7cdc2bab MD |
792 | goto end; |
793 | } | |
794 | } | |
795 | ||
d24d5663 PP |
796 | append_status = bt_value_array_append_element(results, map); |
797 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
1419db2b FD |
798 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
799 | "Error appending map to results."); | |
14f28187 FD |
800 | ret = -1; |
801 | } | |
802 | ||
7cdc2bab MD |
803 | end: |
804 | if (url) { | |
14f28187 | 805 | g_string_free(url, true); |
7cdc2bab | 806 | } |
c5b9b441 | 807 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
808 | return ret; |
809 | } | |
810 | ||
811 | /* | |
812 | * Data structure returned: | |
813 | * | |
814 | * { | |
815 | * <array> = { | |
816 | * [n] = { | |
817 | * <map> = { | |
818 | * { | |
819 | * key = "url", | |
820 | * value = <string>, | |
821 | * }, | |
822 | * { | |
823 | * key = "target-hostname", | |
824 | * value = <string>, | |
825 | * }, | |
826 | * { | |
827 | * key = "session-name", | |
828 | * value = <string>, | |
829 | * }, | |
830 | * { | |
831 | * key = "timer-us", | |
832 | * value = <integer>, | |
833 | * }, | |
834 | * { | |
835 | * key = "stream-count", | |
836 | * value = <integer>, | |
837 | * }, | |
838 | * { | |
839 | * key = "client-count", | |
840 | * value = <integer>, | |
841 | * }, | |
842 | * }, | |
843 | * } | |
844 | * } | |
845 | */ | |
846 | ||
847 | BT_HIDDEN | |
d24d5663 | 848 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
14f28187 FD |
849 | struct live_viewer_connection *viewer_connection, |
850 | const bt_value **user_result) | |
7cdc2bab | 851 | { |
1419db2b | 852 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
d24d5663 PP |
853 | bt_component_class_query_method_status status = |
854 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
14f28187 | 855 | bt_value *result = NULL; |
f79c2d7a | 856 | enum lttng_live_viewer_status viewer_status; |
7cdc2bab MD |
857 | struct lttng_viewer_cmd cmd; |
858 | struct lttng_viewer_list_sessions list; | |
859 | uint32_t i, sessions_count; | |
7cdc2bab | 860 | |
14f28187 FD |
861 | result = bt_value_array_create(); |
862 | if (!result) { | |
1419db2b FD |
863 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
864 | "Error creating array"); | |
d24d5663 | 865 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
866 | goto error; |
867 | } | |
868 | ||
f93afbf9 FD |
869 | BT_LOGD("Requesting list of sessions: cmd=%s", |
870 | lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS)); | |
871 | ||
7cdc2bab MD |
872 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); |
873 | cmd.data_size = htobe64((uint64_t) 0); | |
874 | cmd.cmd_version = htobe32(0); | |
875 | ||
f79c2d7a FD |
876 | viewer_status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
877 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
1419db2b | 878 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
f79c2d7a | 879 | "Error sending list sessions command"); |
d24d5663 | 880 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 881 | goto error; |
f79c2d7a FD |
882 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
883 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
884 | goto error; | |
7cdc2bab | 885 | } |
7cdc2bab | 886 | |
f79c2d7a FD |
887 | viewer_status = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
888 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
1419db2b | 889 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
f79c2d7a | 890 | "Error receiving session list"); |
d24d5663 | 891 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 892 | goto error; |
f79c2d7a FD |
893 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
894 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
7cdc2bab MD |
895 | goto error; |
896 | } | |
7cdc2bab MD |
897 | |
898 | sessions_count = be32toh(list.sessions_count); | |
899 | for (i = 0; i < sessions_count; i++) { | |
900 | struct lttng_viewer_session lsession; | |
901 | ||
f79c2d7a | 902 | viewer_status = lttng_live_recv(viewer_connection, &lsession, |
14f28187 | 903 | sizeof(lsession)); |
f79c2d7a | 904 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { |
1419db2b | 905 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
f79c2d7a | 906 | "Error receiving session:"); |
d24d5663 | 907 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab | 908 | goto error; |
f79c2d7a FD |
909 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
910 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
7cdc2bab MD |
911 | goto error; |
912 | } | |
f79c2d7a | 913 | |
7cdc2bab MD |
914 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
915 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
14f28187 | 916 | if (list_append_session(result, viewer_connection->url, |
c01594de | 917 | &lsession, viewer_connection)) { |
1419db2b FD |
918 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
919 | "Error appending session"); | |
d24d5663 | 920 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
921 | goto error; |
922 | } | |
923 | } | |
14f28187 FD |
924 | |
925 | *user_result = result; | |
7cdc2bab MD |
926 | goto end; |
927 | error: | |
14f28187 | 928 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 929 | end: |
14f28187 | 930 | return status; |
7cdc2bab MD |
931 | } |
932 | ||
933 | static | |
f79c2d7a FD |
934 | enum lttng_live_viewer_status lttng_live_query_session_ids( |
935 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
936 | { |
937 | struct lttng_viewer_cmd cmd; | |
938 | struct lttng_viewer_list_sessions list; | |
939 | struct lttng_viewer_session lsession; | |
940 | uint32_t i, sessions_count; | |
7cdc2bab | 941 | uint64_t session_id; |
f79c2d7a | 942 | enum lttng_live_viewer_status status; |
14f28187 | 943 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
944 | lttng_live_msg_iter->viewer_connection; |
945 | bt_self_component *self_comp = viewer_connection->self_comp; | |
f79c2d7a FD |
946 | bt_self_component_class *self_comp_class = |
947 | viewer_connection->self_comp_class; | |
7cdc2bab | 948 | |
f93afbf9 FD |
949 | BT_COMP_LOGD("Asking the relay daemon for the list of sessions: cmd=%s", |
950 | lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS)); | |
ecb4ba8a | 951 | |
7cdc2bab MD |
952 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); |
953 | cmd.data_size = htobe64((uint64_t) 0); | |
954 | cmd.cmd_version = htobe32(0); | |
955 | ||
f79c2d7a FD |
956 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
957 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
958 | viewer_handle_send_status(self_comp, self_comp_class, | |
959 | status, "list sessions command"); | |
960 | goto end; | |
7cdc2bab | 961 | } |
7cdc2bab | 962 | |
f79c2d7a FD |
963 | status = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
964 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
965 | viewer_handle_recv_status(self_comp, self_comp_class, | |
966 | status, "session list reply"); | |
967 | goto end; | |
7cdc2bab | 968 | } |
7cdc2bab MD |
969 | |
970 | sessions_count = be32toh(list.sessions_count); | |
971 | for (i = 0; i < sessions_count; i++) { | |
f79c2d7a FD |
972 | status = lttng_live_recv(viewer_connection, &lsession, |
973 | sizeof(lsession)); | |
974 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
975 | viewer_handle_recv_status(self_comp, self_comp_class, | |
976 | status, "session reply"); | |
977 | goto end; | |
7cdc2bab | 978 | } |
7cdc2bab MD |
979 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
980 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
981 | session_id = be64toh(lsession.id); | |
982 | ||
ecb4ba8a FD |
983 | BT_COMP_LOGI("Adding session to internal list: " |
984 | "session-id=%" PRIu64 ", hostname=\"%s\", session-name=\"%s\"", | |
06994c71 MD |
985 | session_id, lsession.hostname, lsession.session_name); |
986 | ||
7cdc2bab | 987 | if ((strncmp(lsession.session_name, |
94b828f3 | 988 | viewer_connection->session_name->str, |
1cb3cdd7 | 989 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 990 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 991 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
ecb4ba8a | 992 | |
14f28187 | 993 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
994 | lsession.hostname, |
995 | lsession.session_name)) { | |
1419db2b FD |
996 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
997 | "Failed to add live session"); | |
f79c2d7a FD |
998 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
999 | goto end; | |
7cdc2bab MD |
1000 | } |
1001 | } | |
1002 | } | |
1003 | ||
f79c2d7a | 1004 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 1005 | |
f79c2d7a FD |
1006 | end: |
1007 | return status; | |
7cdc2bab MD |
1008 | } |
1009 | ||
1010 | BT_HIDDEN | |
f79c2d7a | 1011 | enum lttng_live_viewer_status lttng_live_create_viewer_session( |
14f28187 | 1012 | struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
1013 | { |
1014 | struct lttng_viewer_cmd cmd; | |
1015 | struct lttng_viewer_create_session_response resp; | |
f79c2d7a | 1016 | enum lttng_live_viewer_status status; |
14f28187 | 1017 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
1018 | lttng_live_msg_iter->viewer_connection; |
1019 | bt_self_component *self_comp = viewer_connection->self_comp; | |
f79c2d7a FD |
1020 | bt_self_component_class *self_comp_class = |
1021 | viewer_connection->self_comp_class; | |
7cdc2bab | 1022 | |
ecb4ba8a | 1023 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
f93afbf9 FD |
1024 | "Creating a viewer session: cmd=%s", |
1025 | lttng_viewer_command_string(LTTNG_VIEWER_CREATE_SESSION)); | |
ecb4ba8a | 1026 | |
7cdc2bab MD |
1027 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); |
1028 | cmd.data_size = htobe64((uint64_t) 0); | |
1029 | cmd.cmd_version = htobe32(0); | |
1030 | ||
f79c2d7a FD |
1031 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1032 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1033 | viewer_handle_send_status(self_comp, self_comp_class, | |
1034 | status, "create session command"); | |
1035 | goto end; | |
7cdc2bab | 1036 | } |
7cdc2bab | 1037 | |
f79c2d7a FD |
1038 | status = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
1039 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1040 | viewer_handle_recv_status(self_comp, self_comp_class, | |
1041 | status, "create session reply"); | |
1042 | goto end; | |
7cdc2bab | 1043 | } |
7cdc2bab MD |
1044 | |
1045 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
1419db2b FD |
1046 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1047 | "Error creating viewer session"); | |
f79c2d7a FD |
1048 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1049 | goto end; | |
7cdc2bab | 1050 | } |
f79c2d7a FD |
1051 | |
1052 | status = lttng_live_query_session_ids(lttng_live_msg_iter); | |
1053 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
1419db2b FD |
1054 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1055 | "Failed to query live viewer session ids"); | |
f79c2d7a FD |
1056 | goto end; |
1057 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
1058 | goto end; | |
7cdc2bab MD |
1059 | } |
1060 | ||
f79c2d7a FD |
1061 | end: |
1062 | return status; | |
7cdc2bab MD |
1063 | } |
1064 | ||
1065 | static | |
f79c2d7a | 1066 | enum lttng_live_viewer_status receive_streams(struct lttng_live_session *session, |
851de941 SM |
1067 | uint32_t stream_count, |
1068 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1069 | { |
7cdc2bab | 1070 | uint32_t i; |
14f28187 | 1071 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0f1979c3 | 1072 | session->lttng_live_msg_iter; |
f79c2d7a | 1073 | enum lttng_live_viewer_status status; |
14f28187 | 1074 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 1075 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 1076 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 1077 | |
f93afbf9 | 1078 | BT_COMP_LOGI("Getting %" PRIu32 " new streams", stream_count); |
7cdc2bab MD |
1079 | for (i = 0; i < stream_count; i++) { |
1080 | struct lttng_viewer_stream stream; | |
1081 | struct lttng_live_stream_iterator *live_stream; | |
1082 | uint64_t stream_id; | |
1083 | uint64_t ctf_trace_id; | |
1084 | ||
f79c2d7a FD |
1085 | status = lttng_live_recv(viewer_connection, &stream, |
1086 | sizeof(stream)); | |
1087 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1088 | viewer_handle_recv_status(self_comp, NULL, | |
1089 | status, "stream reply"); | |
1090 | goto end; | |
7cdc2bab | 1091 | } |
7cdc2bab MD |
1092 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
1093 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
1094 | stream_id = be64toh(stream.id); | |
1095 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
1096 | ||
1097 | if (stream.metadata_flag) { | |
2ece7dd0 | 1098 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0f1979c3 | 1099 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 1100 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
1101 | ctf_trace_id, stream_id, |
1102 | stream.path_name)) { | |
1419db2b FD |
1103 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1104 | "Error creating metadata stream"); | |
f79c2d7a FD |
1105 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1106 | goto end; | |
7cdc2bab | 1107 | } |
d6e69534 | 1108 | session->lazy_stream_msg_init = true; |
7cdc2bab | 1109 | } else { |
2ece7dd0 | 1110 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0f1979c3 | 1111 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 1112 | live_stream = lttng_live_stream_iterator_create(session, |
851de941 | 1113 | ctf_trace_id, stream_id, self_msg_iter); |
7cdc2bab | 1114 | if (!live_stream) { |
1419db2b FD |
1115 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1116 | "Error creating stream"); | |
f79c2d7a FD |
1117 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1118 | goto end; | |
7cdc2bab MD |
1119 | } |
1120 | } | |
1121 | } | |
f79c2d7a | 1122 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 1123 | |
f79c2d7a FD |
1124 | end: |
1125 | return status; | |
7cdc2bab MD |
1126 | } |
1127 | ||
1128 | BT_HIDDEN | |
36e94ad6 | 1129 | enum lttng_live_viewer_status lttng_live_session_attach( |
851de941 SM |
1130 | struct lttng_live_session *session, |
1131 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab MD |
1132 | { |
1133 | struct lttng_viewer_cmd cmd; | |
f79c2d7a | 1134 | enum lttng_live_viewer_status status; |
7cdc2bab MD |
1135 | struct lttng_viewer_attach_session_request rq; |
1136 | struct lttng_viewer_attach_session_response rp; | |
0f1979c3 FD |
1137 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1138 | session->lttng_live_msg_iter; | |
14f28187 | 1139 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 1140 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 1141 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab MD |
1142 | uint64_t session_id = session->id; |
1143 | uint32_t streams_count; | |
bdcbd52e JR |
1144 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1145 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1146 | |
f93afbf9 FD |
1147 | BT_COMP_LOGD("Attaching to session: cmd=%s, session-id=%" PRIu64 |
1148 | ", seek=%s", | |
1149 | lttng_viewer_command_string(LTTNG_VIEWER_ATTACH_SESSION), | |
1150 | session_id, | |
1151 | lttng_viewer_seek_string(LTTNG_VIEWER_SEEK_LAST)); | |
ecb4ba8a | 1152 | |
7cdc2bab MD |
1153 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
1154 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1155 | cmd.cmd_version = htobe32(0); | |
1156 | ||
1157 | memset(&rq, 0, sizeof(rq)); | |
1158 | rq.session_id = htobe64(session_id); | |
1159 | // TODO: add cmd line parameter to select seek beginning | |
1160 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
1161 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
1162 | ||
bdcbd52e JR |
1163 | /* |
1164 | * Merge the cmd and connection request to prevent a write-write | |
1165 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1166 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1167 | */ | |
1168 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1169 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
f79c2d7a FD |
1170 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1171 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1172 | viewer_handle_send_status(self_comp, NULL, | |
1173 | status, "attach session command"); | |
1174 | goto end; | |
7cdc2bab | 1175 | } |
7cdc2bab | 1176 | |
f79c2d7a FD |
1177 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1178 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1179 | viewer_handle_recv_status(self_comp, NULL, | |
1180 | status, "attach session reply"); | |
1181 | goto end; | |
7cdc2bab | 1182 | } |
7cdc2bab MD |
1183 | |
1184 | streams_count = be32toh(rp.streams_count); | |
1185 | switch(be32toh(rp.status)) { | |
1186 | case LTTNG_VIEWER_ATTACH_OK: | |
1187 | break; | |
1188 | case LTTNG_VIEWER_ATTACH_UNK: | |
1419db2b FD |
1189 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1190 | "Session id %" PRIu64 " is unknown", session_id); | |
f79c2d7a FD |
1191 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1192 | goto end; | |
7cdc2bab | 1193 | case LTTNG_VIEWER_ATTACH_ALREADY: |
1419db2b FD |
1194 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1195 | "There is already a viewer attached to this session"); | |
f79c2d7a FD |
1196 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1197 | goto end; | |
7cdc2bab | 1198 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: |
1419db2b | 1199 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Not a live session"); |
f79c2d7a FD |
1200 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1201 | goto end; | |
7cdc2bab | 1202 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: |
1419db2b | 1203 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Wrong seek parameter"); |
f79c2d7a FD |
1204 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1205 | goto end; | |
7cdc2bab | 1206 | default: |
1419db2b FD |
1207 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1208 | "Unknown attach return code %u", be32toh(rp.status)); | |
f79c2d7a FD |
1209 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1210 | goto end; | |
7cdc2bab MD |
1211 | } |
1212 | ||
1213 | /* We receive the initial list of streams. */ | |
f79c2d7a FD |
1214 | status = receive_streams(session, streams_count, self_msg_iter); |
1215 | switch (status) { | |
1216 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
1217 | break; | |
1218 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
1219 | goto end; | |
1220 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
1419db2b | 1221 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams"); |
f79c2d7a FD |
1222 | goto end; |
1223 | default: | |
1224 | bt_common_abort(); | |
7cdc2bab MD |
1225 | } |
1226 | ||
1227 | session->attached = true; | |
1228 | session->new_streams_needed = false; | |
1229 | ||
eee8e741 | 1230 | end: |
f79c2d7a | 1231 | return status; |
7cdc2bab MD |
1232 | } |
1233 | ||
1234 | BT_HIDDEN | |
36e94ad6 | 1235 | enum lttng_live_viewer_status lttng_live_session_detach( |
f79c2d7a | 1236 | struct lttng_live_session *session) |
7cdc2bab MD |
1237 | { |
1238 | struct lttng_viewer_cmd cmd; | |
f79c2d7a | 1239 | enum lttng_live_viewer_status status; |
7cdc2bab MD |
1240 | struct lttng_viewer_detach_session_request rq; |
1241 | struct lttng_viewer_detach_session_response rp; | |
0f1979c3 FD |
1242 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1243 | session->lttng_live_msg_iter; | |
f79c2d7a | 1244 | bt_self_component *self_comp = session->self_comp; |
14f28187 | 1245 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 1246 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 1247 | uint64_t session_id = session->id; |
bdcbd52e JR |
1248 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1249 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1250 | |
b197ca37 FD |
1251 | /* |
1252 | * The session might already be detached and the viewer socket might | |
1253 | * already been closed. This happens when calling this function when | |
1254 | * tearing down the graph after an error. | |
1255 | */ | |
1256 | if (!session->attached || viewer_connection->control_sock == BT_INVALID_SOCKET) { | |
7cdc2bab MD |
1257 | return 0; |
1258 | } | |
1259 | ||
f93afbf9 FD |
1260 | BT_COMP_LOGD("Detaching from session: cmd=%s, session-id=%" PRIu64, |
1261 | lttng_viewer_command_string(LTTNG_VIEWER_DETACH_SESSION), | |
1262 | session_id); | |
1263 | ||
7cdc2bab MD |
1264 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); |
1265 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1266 | cmd.cmd_version = htobe32(0); | |
1267 | ||
1268 | memset(&rq, 0, sizeof(rq)); | |
1269 | rq.session_id = htobe64(session_id); | |
1270 | ||
bdcbd52e 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)); | |
f79c2d7a FD |
1278 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1279 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1280 | viewer_handle_send_status(self_comp, NULL, | |
1281 | status, "detach session command"); | |
1282 | goto end; | |
7cdc2bab | 1283 | } |
7cdc2bab | 1284 | |
f79c2d7a FD |
1285 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1286 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1287 | viewer_handle_recv_status(self_comp, NULL, | |
1288 | status, "detach session reply"); | |
1289 | goto end; | |
7cdc2bab | 1290 | } |
7cdc2bab MD |
1291 | |
1292 | switch(be32toh(rp.status)) { | |
1293 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
1294 | break; | |
1295 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
2ece7dd0 | 1296 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
f79c2d7a FD |
1297 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1298 | goto end; | |
7cdc2bab | 1299 | case LTTNG_VIEWER_DETACH_SESSION_ERR: |
2ece7dd0 | 1300 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
f79c2d7a FD |
1301 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1302 | goto end; | |
7cdc2bab | 1303 | default: |
2ece7dd0 | 1304 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
f79c2d7a FD |
1305 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1306 | goto end; | |
7cdc2bab MD |
1307 | } |
1308 | ||
1309 | session->attached = false; | |
1310 | ||
f79c2d7a | 1311 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
7cdc2bab | 1312 | |
f79c2d7a FD |
1313 | end: |
1314 | return status; | |
7cdc2bab MD |
1315 | } |
1316 | ||
1317 | BT_HIDDEN | |
c28512ab FD |
1318 | enum lttng_live_get_one_metadata_status lttng_live_get_one_metadata_packet( |
1319 | struct lttng_live_trace *trace, FILE *fp, size_t *reply_len) | |
7cdc2bab MD |
1320 | { |
1321 | uint64_t len = 0; | |
f79c2d7a FD |
1322 | enum lttng_live_get_one_metadata_status status; |
1323 | enum lttng_live_viewer_status viewer_status; | |
7cdc2bab MD |
1324 | struct lttng_viewer_cmd cmd; |
1325 | struct lttng_viewer_get_metadata rq; | |
1326 | struct lttng_viewer_metadata_packet rp; | |
b7370030 | 1327 | gchar *data = NULL; |
0e73b4c2 | 1328 | ssize_t writelen; |
7cdc2bab | 1329 | struct lttng_live_session *session = trace->session; |
0f1979c3 FD |
1330 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1331 | session->lttng_live_msg_iter; | |
7cdc2bab | 1332 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 | 1333 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 1334 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 1335 | bt_self_component *self_comp = viewer_connection->self_comp; |
bdcbd52e JR |
1336 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1337 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab | 1338 | |
f93afbf9 FD |
1339 | BT_COMP_LOGD("Requesting new metadata for trace:" |
1340 | "cmd=%s, trace-id=%" PRIu64 ", metadata-stream-id=%" PRIu64, | |
1341 | lttng_viewer_command_string(LTTNG_VIEWER_GET_METADATA), | |
ecb4ba8a FD |
1342 | trace->id, metadata->stream_id); |
1343 | ||
7cdc2bab MD |
1344 | rq.stream_id = htobe64(metadata->stream_id); |
1345 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1346 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1347 | cmd.cmd_version = htobe32(0); | |
1348 | ||
bdcbd52e JR |
1349 | /* |
1350 | * Merge the cmd and connection request to prevent a write-write | |
1351 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1352 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1353 | */ | |
1354 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1355 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
f79c2d7a FD |
1356 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1357 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1358 | viewer_handle_send_status(self_comp, NULL, | |
1359 | viewer_status, "get metadata command"); | |
1360 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1361 | goto end; | |
7cdc2bab | 1362 | } |
7cdc2bab | 1363 | |
f79c2d7a FD |
1364 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1365 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1366 | viewer_handle_recv_status(self_comp, NULL, | |
1367 | viewer_status, "get metadata reply"); | |
1368 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
1369 | goto end; | |
7cdc2bab | 1370 | } |
7cdc2bab MD |
1371 | |
1372 | switch (be32toh(rp.status)) { | |
1373 | case LTTNG_VIEWER_METADATA_OK: | |
1419db2b | 1374 | BT_COMP_LOGD("Received get_metadata response: ok"); |
7cdc2bab MD |
1375 | break; |
1376 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
c28512ab | 1377 | BT_COMP_LOGD("Received get_metadata response: no new"); |
f79c2d7a | 1378 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END; |
7cdc2bab MD |
1379 | goto end; |
1380 | case LTTNG_VIEWER_METADATA_ERR: | |
c28512ab FD |
1381 | /* |
1382 | * The Relayd cannot find this stream id. Maybe its | |
1383 | * gone already. This can happen in short lived UST app | |
1384 | * in a per-pid session. | |
1385 | */ | |
1386 | BT_COMP_LOGD("Received get_metadata response: error"); | |
f79c2d7a | 1387 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED; |
c28512ab | 1388 | goto end; |
7cdc2bab | 1389 | default: |
1419db2b FD |
1390 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1391 | "Received get_metadata response: unknown"); | |
f79c2d7a | 1392 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
b7370030 | 1393 | goto end; |
7cdc2bab MD |
1394 | } |
1395 | ||
1396 | len = be64toh(rp.len); | |
2ece7dd0 | 1397 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab | 1398 | if (len <= 0) { |
1419db2b FD |
1399 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1400 | "Erroneous response length"); | |
f79c2d7a | 1401 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
b7370030 | 1402 | goto end; |
7cdc2bab MD |
1403 | } |
1404 | ||
b7370030 | 1405 | data = g_new0(gchar, len); |
7cdc2bab | 1406 | if (!data) { |
1419db2b FD |
1407 | BT_COMP_LOGE_APPEND_CAUSE_ERRNO(self_comp, |
1408 | "Failed to allocate data buffer", "."); | |
f79c2d7a | 1409 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
b7370030 | 1410 | goto end; |
7cdc2bab | 1411 | } |
f79c2d7a FD |
1412 | |
1413 | viewer_status = lttng_live_recv(viewer_connection, data, len); | |
1414 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1415 | viewer_handle_recv_status(self_comp, NULL, | |
1416 | viewer_status, "get metadata packet"); | |
1417 | status = (enum lttng_live_get_one_metadata_status) viewer_status; | |
b7370030 | 1418 | goto end; |
7cdc2bab | 1419 | } |
7cdc2bab | 1420 | |
f79c2d7a FD |
1421 | /* |
1422 | * Write the metadata to the file handle. | |
1423 | */ | |
0e73b4c2 FD |
1424 | writelen = fwrite(data, sizeof(uint8_t), len, fp); |
1425 | if (writelen != len) { | |
1419db2b FD |
1426 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1427 | "Writing in the metadata file stream"); | |
f79c2d7a | 1428 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
b7370030 | 1429 | goto end; |
7cdc2bab | 1430 | } |
0e73b4c2 | 1431 | |
c28512ab | 1432 | *reply_len = len; |
f79c2d7a | 1433 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK; |
c28512ab | 1434 | |
c28512ab | 1435 | end: |
b7370030 | 1436 | g_free(data); |
f79c2d7a | 1437 | return status; |
7cdc2bab MD |
1438 | } |
1439 | ||
1440 | /* | |
1441 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1442 | */ | |
1443 | static | |
1444 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1445 | struct packet_index *pindex) | |
1446 | { | |
f6ccaed9 PP |
1447 | BT_ASSERT(lindex); |
1448 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1449 | |
1450 | pindex->offset = be64toh(lindex->offset); | |
1451 | pindex->packet_size = be64toh(lindex->packet_size); | |
1452 | pindex->content_size = be64toh(lindex->content_size); | |
1453 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1454 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1455 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1456 | } | |
1457 | ||
36e94ad6 FD |
1458 | static |
1459 | void lttng_live_need_new_streams(struct lttng_live_msg_iter *lttng_live_msg_iter) | |
1460 | { | |
1461 | uint64_t session_idx; | |
f93afbf9 FD |
1462 | struct live_viewer_connection *viewer_connection = |
1463 | lttng_live_msg_iter->viewer_connection; | |
36e94ad6 FD |
1464 | |
1465 | for (session_idx = 0; session_idx < lttng_live_msg_iter->sessions->len; | |
1466 | session_idx++) { | |
1467 | struct lttng_live_session *session = | |
f93afbf9 FD |
1468 | g_ptr_array_index(lttng_live_msg_iter->sessions, session_idx); |
1469 | BT_COMP_LOGD("Marking session as needing new streams: " | |
1470 | "session-id=%" PRIu64, session->id); | |
36e94ad6 FD |
1471 | session->new_streams_needed = true; |
1472 | } | |
1473 | } | |
1474 | ||
7cdc2bab | 1475 | BT_HIDDEN |
14f28187 FD |
1476 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1477 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1478 | struct lttng_live_stream_iterator *stream, |
1479 | struct packet_index *index) | |
1480 | { | |
1481 | struct lttng_viewer_cmd cmd; | |
1482 | struct lttng_viewer_get_next_index rq; | |
f79c2d7a | 1483 | enum lttng_live_viewer_status viewer_status; |
7cdc2bab | 1484 | struct lttng_viewer_index rp; |
f79c2d7a | 1485 | enum lttng_live_iterator_status status; |
14f28187 | 1486 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
1487 | lttng_live_msg_iter->viewer_connection; |
1488 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1489 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1490 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1491 | char cmd_buf[cmd_buf_len]; | |
f79c2d7a | 1492 | uint32_t flags, rp_status; |
7cdc2bab | 1493 | |
f93afbf9 FD |
1494 | BT_COMP_LOGD("Requesting next index for stream: cmd=%s, " |
1495 | "viewer-stream-id=%" PRIu64, | |
1496 | lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX), | |
1497 | stream->viewer_stream_id); | |
7cdc2bab MD |
1498 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); |
1499 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1500 | cmd.cmd_version = htobe32(0); | |
1501 | ||
1502 | memset(&rq, 0, sizeof(rq)); | |
1503 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1504 | ||
bdcbd52e JR |
1505 | /* |
1506 | * Merge the cmd and connection request to prevent a write-write | |
1507 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1508 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1509 | */ | |
1510 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1511 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
f93afbf9 | 1512 | |
f79c2d7a FD |
1513 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1514 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1515 | viewer_handle_send_status(self_comp, NULL, | |
1516 | viewer_status, "get next index command"); | |
7cdc2bab MD |
1517 | goto error; |
1518 | } | |
7cdc2bab | 1519 | |
f79c2d7a FD |
1520 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1521 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1522 | viewer_handle_recv_status(self_comp, NULL, | |
1523 | viewer_status, "get next index reply"); | |
7cdc2bab MD |
1524 | goto error; |
1525 | } | |
7cdc2bab MD |
1526 | |
1527 | flags = be32toh(rp.flags); | |
f79c2d7a | 1528 | rp_status = be32toh(rp.status); |
7cdc2bab | 1529 | |
f93afbf9 FD |
1530 | BT_COMP_LOGD("Received response from relay daemon: cmd=%s, response=%s", |
1531 | lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX), | |
1532 | lttng_viewer_next_index_return_code_string(rp_status)); | |
f79c2d7a | 1533 | switch (rp_status) { |
7cdc2bab MD |
1534 | case LTTNG_VIEWER_INDEX_INACTIVE: |
1535 | { | |
1536 | uint64_t ctf_stream_class_id; | |
1537 | ||
7cdc2bab MD |
1538 | memset(index, 0, sizeof(struct packet_index)); |
1539 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
14f28187 | 1540 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1541 | ctf_stream_class_id = be64toh(rp.stream_id); |
1542 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1543 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1544 | ctf_stream_class_id); |
1545 | } else { | |
1546 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1547 | } | |
1548 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
f79c2d7a | 1549 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1550 | break; |
1551 | } | |
1552 | case LTTNG_VIEWER_INDEX_OK: | |
1553 | { | |
1554 | uint64_t ctf_stream_class_id; | |
1555 | ||
7cdc2bab MD |
1556 | lttng_index_to_packet_index(&rp, index); |
1557 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1558 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1559 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1560 | ctf_stream_class_id); |
1561 | } else { | |
1562 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1563 | } | |
1564 | ||
1565 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1566 | |
1567 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
f93afbf9 FD |
1568 | BT_COMP_LOGD("Marking trace as needing new metadata: " |
1569 | "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64, | |
1570 | lttng_viewer_next_index_return_code_string(rp_status), | |
1571 | trace->id); | |
76bbaebc | 1572 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
7cdc2bab MD |
1573 | } |
1574 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
f93afbf9 FD |
1575 | BT_COMP_LOGD("Marking all sessions as possibly needing new streams: " |
1576 | "response=%s, response-flag=NEW_STREAM", | |
1577 | lttng_viewer_next_index_return_code_string(rp_status)); | |
14f28187 | 1578 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab | 1579 | } |
f79c2d7a | 1580 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1581 | break; |
1582 | } | |
1583 | case LTTNG_VIEWER_INDEX_RETRY: | |
7cdc2bab | 1584 | memset(index, 0, sizeof(struct packet_index)); |
7cdc2bab | 1585 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
f79c2d7a | 1586 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1587 | goto end; |
1588 | case LTTNG_VIEWER_INDEX_HUP: | |
7cdc2bab MD |
1589 | memset(index, 0, sizeof(struct packet_index)); |
1590 | index->offset = EOF; | |
7cdc2bab | 1591 | stream->state = LTTNG_LIVE_STREAM_EOF; |
4a39caef | 1592 | stream->has_stream_hung_up = true; |
f79c2d7a | 1593 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1594 | break; |
1595 | case LTTNG_VIEWER_INDEX_ERR: | |
7cdc2bab MD |
1596 | memset(index, 0, sizeof(struct packet_index)); |
1597 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
f79c2d7a FD |
1598 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1599 | goto end; | |
7cdc2bab | 1600 | default: |
1419db2b | 1601 | BT_COMP_LOGD("Received get_next_index response: unknown value"); |
7cdc2bab MD |
1602 | memset(index, 0, sizeof(struct packet_index)); |
1603 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
f79c2d7a FD |
1604 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1605 | goto end; | |
7cdc2bab | 1606 | } |
f79c2d7a | 1607 | goto end; |
7cdc2bab MD |
1608 | |
1609 | error: | |
f79c2d7a FD |
1610 | status = viewer_status_to_live_iterator_status(viewer_status); |
1611 | end: | |
1612 | return status; | |
7cdc2bab MD |
1613 | } |
1614 | ||
1615 | BT_HIDDEN | |
18a1979b | 1616 | enum ctf_msg_iter_medium_status lttng_live_get_stream_bytes( |
14f28187 FD |
1617 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1618 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1619 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1620 | { |
f79c2d7a FD |
1621 | enum ctf_msg_iter_medium_status status; |
1622 | enum lttng_live_viewer_status viewer_status; | |
0f1979c3 | 1623 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1624 | struct lttng_viewer_cmd cmd; |
1625 | struct lttng_viewer_get_packet rq; | |
14f28187 | 1626 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
1627 | lttng_live_msg_iter->viewer_connection; |
1628 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1629 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1630 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1631 | char cmd_buf[cmd_buf_len]; | |
f79c2d7a | 1632 | uint32_t flags, rp_status; |
7cdc2bab | 1633 | |
f93afbf9 FD |
1634 | BT_COMP_LOGD("Requesting data from stream: cmd=%s, " |
1635 | "offset=%" PRIu64 ", request-len=%" PRIu64, | |
1636 | lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET), | |
7cdc2bab | 1637 | offset, req_len); |
f93afbf9 | 1638 | |
7cdc2bab MD |
1639 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); |
1640 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1641 | cmd.cmd_version = htobe32(0); | |
1642 | ||
1643 | memset(&rq, 0, sizeof(rq)); | |
1644 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1645 | rq.offset = htobe64(offset); | |
1646 | rq.len = htobe32(req_len); | |
1647 | ||
bdcbd52e JR |
1648 | /* |
1649 | * Merge the cmd and connection request to prevent a write-write | |
1650 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1651 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1652 | */ | |
1653 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1654 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
f93afbf9 | 1655 | |
f79c2d7a FD |
1656 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1657 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1658 | viewer_handle_send_status(self_comp, NULL, | |
1659 | viewer_status, "get data packet command"); | |
535fb48a | 1660 | goto error_convert_status; |
7cdc2bab | 1661 | } |
7cdc2bab | 1662 | |
f79c2d7a FD |
1663 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1664 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1665 | viewer_handle_recv_status(self_comp, NULL, | |
1666 | viewer_status, "get data packet reply"); | |
535fb48a | 1667 | goto error_convert_status; |
7cdc2bab MD |
1668 | } |
1669 | ||
1670 | flags = be32toh(rp.flags); | |
f79c2d7a | 1671 | rp_status = be32toh(rp.status); |
7cdc2bab | 1672 | |
f93afbf9 FD |
1673 | BT_COMP_LOGD("Received response from relay daemon: cmd=%s, response=%s", |
1674 | lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET), | |
1675 | lttng_viewer_get_packet_return_code_string(rp_status)); | |
f79c2d7a | 1676 | switch (rp_status) { |
7cdc2bab MD |
1677 | case LTTNG_VIEWER_GET_PACKET_OK: |
1678 | req_len = be32toh(rp.len); | |
f93afbf9 FD |
1679 | BT_COMP_LOGD("Got packet from relay daemon: response=%s, packet-len=%" PRIu64 "", |
1680 | lttng_viewer_get_packet_return_code_string(rp_status), | |
1681 | req_len); | |
f79c2d7a | 1682 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
7cdc2bab MD |
1683 | break; |
1684 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1685 | /* Unimplemented by relay daemon */ | |
f79c2d7a | 1686 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1687 | goto end; |
1688 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1689 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
f93afbf9 FD |
1690 | BT_COMP_LOGD("Marking trace as needing new metadata: " |
1691 | "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64, | |
1692 | lttng_viewer_next_index_return_code_string(rp_status), | |
1693 | trace->id); | |
76bbaebc | 1694 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
7cdc2bab MD |
1695 | } |
1696 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
f93afbf9 FD |
1697 | BT_COMP_LOGD("Marking all sessions as possibly needing new streams: " |
1698 | "response=%s, response-flag=NEW_STREAM", | |
1699 | lttng_viewer_next_index_return_code_string(rp_status)); | |
14f28187 | 1700 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1701 | } |
1702 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1703 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
f79c2d7a | 1704 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
f93afbf9 FD |
1705 | BT_COMP_LOGD("Reply with any one flags set means we should retry: response=%s", |
1706 | lttng_viewer_get_packet_return_code_string(rp_status)); | |
7cdc2bab MD |
1707 | goto end; |
1708 | } | |
1419db2b FD |
1709 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1710 | "Received get_data_packet response: error"); | |
f79c2d7a FD |
1711 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
1712 | goto end; | |
7cdc2bab | 1713 | case LTTNG_VIEWER_GET_PACKET_EOF: |
f79c2d7a | 1714 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1715 | goto end; |
1716 | default: | |
1419db2b | 1717 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
535fb48a | 1718 | "Received get_data_packet response: unknown (%d)", rp_status); |
f79c2d7a | 1719 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
535fb48a | 1720 | goto end; |
7cdc2bab MD |
1721 | } |
1722 | ||
1723 | if (req_len == 0) { | |
f79c2d7a | 1724 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
535fb48a | 1725 | goto end; |
7cdc2bab MD |
1726 | } |
1727 | ||
f79c2d7a FD |
1728 | viewer_status = lttng_live_recv(viewer_connection, buf, req_len); |
1729 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1730 | viewer_handle_recv_status(self_comp, NULL, | |
1731 | viewer_status, "get data packet"); | |
535fb48a | 1732 | goto error_convert_status; |
7cdc2bab | 1733 | } |
f79c2d7a | 1734 | *recv_len = req_len; |
7cdc2bab | 1735 | |
f79c2d7a FD |
1736 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
1737 | goto end; | |
f79c2d7a | 1738 | |
535fb48a | 1739 | error_convert_status: |
f79c2d7a FD |
1740 | status = viewer_status_to_ctf_msg_iter_medium_status(viewer_status); |
1741 | end: | |
1742 | return status; | |
7cdc2bab MD |
1743 | } |
1744 | ||
1745 | /* | |
1746 | * Request new streams for a session. | |
1747 | */ | |
1748 | BT_HIDDEN | |
36e94ad6 | 1749 | enum lttng_live_iterator_status lttng_live_session_get_new_streams( |
851de941 SM |
1750 | struct lttng_live_session *session, |
1751 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1752 | { |
14f28187 FD |
1753 | enum lttng_live_iterator_status status = |
1754 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1755 | struct lttng_viewer_cmd cmd; |
1756 | struct lttng_viewer_new_streams_request rq; | |
1757 | struct lttng_viewer_new_streams_response rp; | |
14f28187 FD |
1758 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1759 | session->lttng_live_msg_iter; | |
f79c2d7a | 1760 | enum lttng_live_viewer_status viewer_status; |
14f28187 FD |
1761 | struct live_viewer_connection *viewer_connection = |
1762 | lttng_live_msg_iter->viewer_connection; | |
1419db2b | 1763 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 1764 | uint32_t streams_count; |
bdcbd52e JR |
1765 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1766 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1767 | |
1768 | if (!session->new_streams_needed) { | |
f79c2d7a FD |
1769 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1770 | goto end; | |
7cdc2bab MD |
1771 | } |
1772 | ||
f93afbf9 FD |
1773 | BT_COMP_LOGD("Requesting new streams for session: cmd=%s" |
1774 | "session-id=%" PRIu64, | |
1775 | lttng_viewer_command_string(LTTNG_VIEWER_GET_NEW_STREAMS), | |
1776 | session->id); | |
ecb4ba8a | 1777 | |
7cdc2bab MD |
1778 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); |
1779 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1780 | cmd.cmd_version = htobe32(0); | |
1781 | ||
1782 | memset(&rq, 0, sizeof(rq)); | |
1783 | rq.session_id = htobe64(session->id); | |
1784 | ||
bdcbd52e JR |
1785 | /* |
1786 | * Merge the cmd and connection request to prevent a write-write | |
1787 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1788 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1789 | */ | |
1790 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1791 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
f93afbf9 | 1792 | |
f79c2d7a FD |
1793 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1794 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1795 | viewer_handle_send_status(self_comp, NULL, | |
1796 | viewer_status, "get new streams command"); | |
1797 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1798 | goto end; | |
7cdc2bab | 1799 | } |
7cdc2bab | 1800 | |
f79c2d7a FD |
1801 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
1802 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1803 | viewer_handle_recv_status(self_comp, NULL, | |
1804 | viewer_status, "get new streams reply"); | |
1805 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1806 | goto end; | |
7cdc2bab | 1807 | } |
7cdc2bab MD |
1808 | |
1809 | streams_count = be32toh(rp.streams_count); | |
1810 | ||
1811 | switch(be32toh(rp.status)) { | |
1812 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1813 | session->new_streams_needed = false; | |
1814 | break; | |
1815 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1816 | session->new_streams_needed = false; | |
1817 | goto end; | |
1818 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1819 | session->new_streams_needed = false; | |
1820 | session->closed = true; | |
14f28187 | 1821 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1822 | goto end; |
1823 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
1419db2b | 1824 | BT_COMP_LOGD("Received get_new_streams response: error"); |
f79c2d7a FD |
1825 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1826 | goto end; | |
7cdc2bab | 1827 | default: |
1419db2b FD |
1828 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1829 | "Received get_new_streams response: Unknown:" | |
1830 | "return code %u", be32toh(rp.status)); | |
f79c2d7a FD |
1831 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1832 | goto end; | |
7cdc2bab MD |
1833 | } |
1834 | ||
f79c2d7a FD |
1835 | viewer_status = receive_streams(session, streams_count, self_msg_iter); |
1836 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
1837 | viewer_handle_recv_status(self_comp, NULL, | |
1838 | viewer_status, "new streams"); | |
1839 | status = viewer_status_to_live_iterator_status(viewer_status); | |
1840 | goto end; | |
7cdc2bab | 1841 | } |
7cdc2bab | 1842 | |
f79c2d7a FD |
1843 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1844 | end: | |
7cdc2bab MD |
1845 | return status; |
1846 | } | |
1847 | ||
1848 | BT_HIDDEN | |
f79c2d7a | 1849 | enum lttng_live_viewer_status live_viewer_connection_create( |
1419db2b FD |
1850 | bt_self_component *self_comp, |
1851 | bt_self_component_class *self_comp_class, | |
f79c2d7a FD |
1852 | bt_logging_level log_level, |
1853 | const char *url, bool in_query, | |
1854 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1855 | struct live_viewer_connection **viewer) | |
7cdc2bab | 1856 | { |
14f28187 | 1857 | struct live_viewer_connection *viewer_connection; |
f79c2d7a | 1858 | enum lttng_live_viewer_status status; |
7cdc2bab | 1859 | |
14f28187 | 1860 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1861 | |
550004b4 | 1862 | if (bt_socket_init(log_level) != 0) { |
1419db2b FD |
1863 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1864 | self_comp_class, "Failed to init socket"); | |
f79c2d7a | 1865 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1cb3cdd7 MJ |
1866 | goto error; |
1867 | } | |
1868 | ||
550004b4 PP |
1869 | viewer_connection->log_level = log_level; |
1870 | ||
1419db2b FD |
1871 | viewer_connection->self_comp = self_comp; |
1872 | viewer_connection->self_comp_class = self_comp_class; | |
550004b4 | 1873 | |
1cb3cdd7 | 1874 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1875 | viewer_connection->port = -1; |
14f28187 FD |
1876 | viewer_connection->in_query = in_query; |
1877 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1878 | viewer_connection->url = g_string_new(url); |
1879 | if (!viewer_connection->url) { | |
1419db2b FD |
1880 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1881 | self_comp_class, "Failed to allocate URL buffer"); | |
f79c2d7a | 1882 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
7cdc2bab MD |
1883 | goto error; |
1884 | } | |
1885 | ||
ecb4ba8a FD |
1886 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
1887 | "Establishing connection to url \"%s\"...", url); | |
f79c2d7a FD |
1888 | status = lttng_live_connect_viewer(viewer_connection); |
1889 | /* | |
1890 | * Only print error and append cause in case of error. not in case of | |
1891 | * interruption. | |
1892 | */ | |
1893 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
1419db2b FD |
1894 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1895 | self_comp_class, "Failed to establish connection: " | |
1896 | "url=\"%s\"", url); | |
1897 | goto error; | |
f79c2d7a FD |
1898 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
1899 | goto error; | |
7cdc2bab | 1900 | } |
ecb4ba8a FD |
1901 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
1902 | "Connection to url \"%s\" is established", url); | |
f79c2d7a FD |
1903 | |
1904 | *viewer = viewer_connection; | |
1905 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
1906 | goto end; | |
7cdc2bab | 1907 | |
7cdc2bab | 1908 | error: |
2f767475 PP |
1909 | if (viewer_connection) { |
1910 | live_viewer_connection_destroy(viewer_connection); | |
1911 | } | |
f79c2d7a FD |
1912 | end: |
1913 | return status; | |
7cdc2bab MD |
1914 | } |
1915 | ||
1916 | BT_HIDDEN | |
14f28187 FD |
1917 | void live_viewer_connection_destroy( |
1918 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1919 | { |
ecb4ba8a FD |
1920 | bt_self_component *self_comp = viewer_connection->self_comp; |
1921 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; | |
b9e6ec43 FD |
1922 | |
1923 | if (!viewer_connection) { | |
1924 | goto end; | |
1925 | } | |
1926 | ||
ecb4ba8a FD |
1927 | BT_COMP_OR_COMP_CLASS_LOGD(self_comp, self_comp_class, |
1928 | "Closing connection to relay:" | |
1929 | "relay-url=\"%s\"", viewer_connection->url->str); | |
1930 | ||
7cdc2bab | 1931 | lttng_live_disconnect_viewer(viewer_connection); |
b9e6ec43 | 1932 | |
2f767475 PP |
1933 | if (viewer_connection->url) { |
1934 | g_string_free(viewer_connection->url, true); | |
1935 | } | |
b9e6ec43 | 1936 | |
94b828f3 | 1937 | if (viewer_connection->relay_hostname) { |
14f28187 | 1938 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 | 1939 | } |
b9e6ec43 | 1940 | |
94b828f3 | 1941 | if (viewer_connection->target_hostname) { |
14f28187 | 1942 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 | 1943 | } |
b9e6ec43 | 1944 | |
94b828f3 | 1945 | if (viewer_connection->session_name) { |
14f28187 | 1946 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1947 | } |
b9e6ec43 | 1948 | |
ecb4ba8a FD |
1949 | if (viewer_connection->proto) { |
1950 | g_string_free(viewer_connection->proto, true); | |
1951 | } | |
1952 | ||
7cdc2bab | 1953 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1954 | |
1955 | bt_socket_fini(); | |
b9e6ec43 FD |
1956 | |
1957 | end: | |
1958 | return; | |
7cdc2bab | 1959 | } |