Commit | Line | Data |
---|---|---|
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 | ||
27a14e13 SM |
8 | #define BT_CLOG_CFG (logCfg) |
9 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER" | |
020bc26f | 10 | |
3c22a242 FD |
11 | #include <fcntl.h> |
12 | #include <stdbool.h> | |
7cdc2bab | 13 | #include <stdint.h> |
3c22a242 | 14 | #include <stdio.h> |
7cdc2bab | 15 | #include <stdlib.h> |
3c22a242 | 16 | #include <sys/types.h> |
7cdc2bab | 17 | #include <unistd.h> |
3c22a242 | 18 | |
7cdc2bab | 19 | #include <glib.h> |
7cdc2bab | 20 | |
578e048b MJ |
21 | #include "compat/socket.h" |
22 | #include "compat/endian.h" | |
23 | #include "compat/compiler.h" | |
24 | #include "common/common.h" | |
3fadfbc0 | 25 | #include <babeltrace2/babeltrace.h> |
772808ca | 26 | #include "cpp-common/make-unique.hpp" |
7cdc2bab | 27 | |
087cd0f5 SM |
28 | #include "lttng-live.hpp" |
29 | #include "viewer-connection.hpp" | |
30 | #include "lttng-viewer-abi.hpp" | |
31 | #include "data-stream.hpp" | |
32 | #include "metadata.hpp" | |
27a14e13 | 33 | #include "cpp-common/cfg-logging-error-reporting.hpp" |
7cdc2bab | 34 | |
27a14e13 | 35 | #define viewer_handle_send_recv_status(_logCfg, _status, _action, _msg_str) \ |
4164020e SM |
36 | do { \ |
37 | switch (_status) { \ | |
38 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: \ | |
39 | break; \ | |
40 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: \ | |
27a14e13 | 41 | BT_CLOGE_APPEND_CAUSE("Error " _action " " _msg_str); \ |
4164020e SM |
42 | break; \ |
43 | default: \ | |
44 | bt_common_abort(); \ | |
45 | } \ | |
46 | } while (0) | |
47 | ||
27a14e13 SM |
48 | #define viewer_handle_send_status(_logCfg, _status, _msg_str) \ |
49 | viewer_handle_send_recv_status(_logCfg, _status, "sending", _msg_str) | |
4164020e | 50 | |
27a14e13 SM |
51 | #define viewer_handle_recv_status(_logCfg, _status, _msg_str) \ |
52 | viewer_handle_send_recv_status(_logCfg, _status, "receiving", _msg_str) | |
4164020e | 53 | |
27a14e13 | 54 | #define LTTNG_LIVE_CLOGE_APPEND_CAUSE_ERRNO(_msg, _fmt, ...) \ |
4164020e | 55 | do { \ |
27a14e13 | 56 | BT_CLOGE_APPEND_CAUSE(_msg ": %s" _fmt, bt_socket_errormsg(), ##__VA_ARGS__); \ |
4164020e SM |
57 | } while (0) |
58 | ||
59 | static const char *lttng_viewer_command_string(enum lttng_viewer_command cmd) | |
f93afbf9 | 60 | { |
4164020e SM |
61 | switch (cmd) { |
62 | case LTTNG_VIEWER_CONNECT: | |
63 | return "CONNECT"; | |
64 | case LTTNG_VIEWER_LIST_SESSIONS: | |
65 | return "LIST_SESSIONS"; | |
66 | case LTTNG_VIEWER_ATTACH_SESSION: | |
67 | return "ATTACH_SESSION"; | |
68 | case LTTNG_VIEWER_GET_NEXT_INDEX: | |
69 | return "GET_NEXT_INDEX"; | |
70 | case LTTNG_VIEWER_GET_PACKET: | |
71 | return "GET_PACKET"; | |
72 | case LTTNG_VIEWER_GET_METADATA: | |
73 | return "GET_METADATA"; | |
74 | case LTTNG_VIEWER_GET_NEW_STREAMS: | |
75 | return "GET_NEW_STREAMS"; | |
76 | case LTTNG_VIEWER_CREATE_SESSION: | |
77 | return "CREATE_SESSION"; | |
78 | case LTTNG_VIEWER_DETACH_SESSION: | |
79 | return "DETACH_SESSION"; | |
80 | } | |
81 | ||
82 | bt_common_abort(); | |
f93afbf9 FD |
83 | } |
84 | ||
4164020e SM |
85 | static const char * |
86 | lttng_viewer_next_index_return_code_string(enum lttng_viewer_next_index_return_code code) | |
f93afbf9 | 87 | { |
4164020e SM |
88 | switch (code) { |
89 | case LTTNG_VIEWER_INDEX_OK: | |
90 | return "INDEX_OK"; | |
91 | case LTTNG_VIEWER_INDEX_RETRY: | |
92 | return "INDEX_RETRY"; | |
93 | case LTTNG_VIEWER_INDEX_HUP: | |
94 | return "INDEX_HUP"; | |
95 | case LTTNG_VIEWER_INDEX_ERR: | |
96 | return "INDEX_ERR"; | |
97 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
98 | return "INDEX_INACTIVE"; | |
99 | case LTTNG_VIEWER_INDEX_EOF: | |
100 | return "INDEX_EOF"; | |
101 | } | |
102 | ||
103 | bt_common_abort(); | |
f93afbf9 FD |
104 | } |
105 | ||
4164020e | 106 | static const char *lttng_viewer_next_index_return_code_string(uint32_t code) |
087cd0f5 | 107 | { |
4164020e | 108 | return lttng_viewer_next_index_return_code_string((lttng_viewer_next_index_return_code) code); |
087cd0f5 SM |
109 | } |
110 | ||
4164020e SM |
111 | static const char * |
112 | lttng_viewer_get_packet_return_code_string(enum lttng_viewer_get_packet_return_code code) | |
f93afbf9 | 113 | { |
4164020e SM |
114 | switch (code) { |
115 | case LTTNG_VIEWER_GET_PACKET_OK: | |
116 | return "GET_PACKET_OK"; | |
117 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
118 | return "GET_PACKET_RETRY"; | |
119 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
120 | return "GET_PACKET_ERR"; | |
121 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
122 | return "GET_PACKET_EOF"; | |
123 | } | |
124 | ||
125 | bt_common_abort(); | |
f93afbf9 FD |
126 | }; |
127 | ||
4164020e | 128 | static const char *lttng_viewer_get_packet_return_code_string(uint32_t code) |
087cd0f5 | 129 | { |
4164020e | 130 | return lttng_viewer_get_packet_return_code_string((lttng_viewer_get_packet_return_code) code); |
087cd0f5 SM |
131 | } |
132 | ||
4164020e | 133 | static const char *lttng_viewer_seek_string(enum lttng_viewer_seek seek) |
f93afbf9 | 134 | { |
4164020e SM |
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(); | |
f93afbf9 FD |
143 | } |
144 | ||
4164020e SM |
145 | static inline enum lttng_live_iterator_status |
146 | viewer_status_to_live_iterator_status(enum lttng_live_viewer_status viewer_status) | |
f79c2d7a | 147 | { |
4164020e SM |
148 | switch (viewer_status) { |
149 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
150 | return LTTNG_LIVE_ITERATOR_STATUS_OK; | |
151 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
152 | return LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
153 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
154 | return LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
155 | } | |
156 | ||
157 | bt_common_abort(); | |
f79c2d7a FD |
158 | } |
159 | ||
4164020e SM |
160 | static inline enum ctf_msg_iter_medium_status |
161 | viewer_status_to_ctf_msg_iter_medium_status(enum lttng_live_viewer_status viewer_status) | |
f79c2d7a | 162 | { |
4164020e SM |
163 | switch (viewer_status) { |
164 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
165 | return CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
166 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
167 | return CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
168 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
169 | return CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
170 | } | |
171 | ||
172 | bt_common_abort(); | |
f79c2d7a FD |
173 | } |
174 | ||
4164020e | 175 | static inline void viewer_connection_close_socket(struct live_viewer_connection *viewer_connection) |
b197ca37 | 176 | { |
4164020e SM |
177 | int ret = bt_socket_close(viewer_connection->control_sock); |
178 | if (ret == -1) { | |
27a14e13 SM |
179 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
180 | BT_CLOGW_ERRNO("Error closing viewer connection socket: ", "."); | |
4164020e SM |
181 | } |
182 | ||
183 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
b197ca37 FD |
184 | } |
185 | ||
f79c2d7a FD |
186 | /* |
187 | * This function receives a message from the Relay daemon. | |
188 | * If it received the entire message, it returns _OK, | |
189 | * If it's interrupted, it returns _INTERRUPTED, | |
190 | * otherwise, it returns _ERROR. | |
191 | */ | |
4164020e SM |
192 | static enum lttng_live_viewer_status |
193 | lttng_live_recv(struct live_viewer_connection *viewer_connection, void *buf, size_t len) | |
7cdc2bab | 194 | { |
4164020e | 195 | ssize_t received; |
4164020e SM |
196 | size_t total_received = 0, to_receive = len; |
197 | struct lttng_live_msg_iter *lttng_live_msg_iter = viewer_connection->lttng_live_msg_iter; | |
198 | enum lttng_live_viewer_status status; | |
199 | BT_SOCKET sock = viewer_connection->control_sock; | |
27a14e13 | 200 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
201 | |
202 | /* | |
203 | * Receive a message from the Relay. | |
204 | */ | |
205 | do { | |
206 | received = bt_socket_recv(sock, (char *) buf + total_received, to_receive, 0); | |
207 | if (received == BT_SOCKET_ERROR) { | |
208 | if (bt_socket_interrupted()) { | |
209 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
210 | /* | |
211 | * This interruption was due to a | |
212 | * SIGINT and the graph is being torn | |
213 | * down. | |
214 | */ | |
215 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
216 | lttng_live_msg_iter->was_interrupted = true; | |
217 | goto end; | |
218 | } else { | |
219 | /* | |
220 | * A signal was received, but the graph | |
221 | * is not being torn down. Carry on. | |
222 | */ | |
223 | continue; | |
224 | } | |
225 | } else { | |
226 | /* | |
227 | * For any other types of socket error, close | |
228 | * the socket and return an error. | |
229 | */ | |
27a14e13 | 230 | LTTNG_LIVE_CLOGE_APPEND_CAUSE_ERRNO("Error receiving from Relay", "."); |
4164020e SM |
231 | |
232 | viewer_connection_close_socket(viewer_connection); | |
233 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
234 | goto end; | |
235 | } | |
236 | } else if (received == 0) { | |
237 | /* | |
238 | * The recv() call returned 0. This means the | |
239 | * connection was orderly shutdown from the other peer. | |
240 | * If that happens when we are trying to receive | |
241 | * a message from it, it means something when wrong. | |
242 | * Close the socket and return an error. | |
243 | */ | |
27a14e13 | 244 | BT_CLOGE_APPEND_CAUSE("Remote side has closed connection"); |
4164020e SM |
245 | viewer_connection_close_socket(viewer_connection); |
246 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
247 | goto end; | |
248 | } | |
249 | ||
250 | BT_ASSERT(received <= to_receive); | |
251 | total_received += received; | |
252 | to_receive -= received; | |
253 | ||
254 | } while (to_receive > 0); | |
255 | ||
256 | BT_ASSERT(total_received == len); | |
257 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
f79c2d7a FD |
258 | |
259 | end: | |
4164020e | 260 | return status; |
7cdc2bab MD |
261 | } |
262 | ||
f79c2d7a FD |
263 | /* |
264 | * This function sends a message to the Relay daemon. | |
265 | * If it send the message, it returns _OK, | |
266 | * If it's interrupted, it returns _INTERRUPTED, | |
267 | * otherwise, it returns _ERROR. | |
268 | */ | |
4164020e SM |
269 | static enum lttng_live_viewer_status |
270 | lttng_live_send(struct live_viewer_connection *viewer_connection, const void *buf, size_t len) | |
7cdc2bab | 271 | { |
4164020e | 272 | enum lttng_live_viewer_status status; |
4164020e SM |
273 | struct lttng_live_msg_iter *lttng_live_msg_iter = viewer_connection->lttng_live_msg_iter; |
274 | BT_SOCKET sock = viewer_connection->control_sock; | |
275 | size_t to_send = len; | |
276 | ssize_t total_sent = 0; | |
27a14e13 | 277 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
278 | |
279 | do { | |
280 | ssize_t sent = bt_socket_send_nosigpipe(sock, (char *) buf + total_sent, to_send); | |
281 | if (sent == BT_SOCKET_ERROR) { | |
282 | if (bt_socket_interrupted()) { | |
283 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
284 | /* | |
285 | * This interruption was a SIGINT and | |
286 | * the graph is being teared down. | |
287 | */ | |
288 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
289 | lttng_live_msg_iter->was_interrupted = true; | |
290 | goto end; | |
291 | } else { | |
292 | /* | |
293 | * A signal was received, but the graph | |
294 | * is not being teared down. Carry on. | |
295 | */ | |
296 | continue; | |
297 | } | |
298 | } else { | |
299 | /* | |
300 | * For any other types of socket error, close | |
301 | * the socket and return an error. | |
302 | */ | |
27a14e13 | 303 | LTTNG_LIVE_CLOGE_APPEND_CAUSE_ERRNO("Error sending to Relay", "."); |
4164020e SM |
304 | |
305 | viewer_connection_close_socket(viewer_connection); | |
306 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
307 | goto end; | |
308 | } | |
309 | } | |
310 | ||
311 | BT_ASSERT(sent <= to_send); | |
312 | total_sent += sent; | |
313 | to_send -= sent; | |
314 | ||
315 | } while (to_send > 0); | |
316 | ||
317 | BT_ASSERT(total_sent == len); | |
318 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
f79c2d7a FD |
319 | |
320 | end: | |
4164020e | 321 | return status; |
7cdc2bab MD |
322 | } |
323 | ||
4164020e | 324 | static int parse_url(struct live_viewer_connection *viewer_connection) |
7cdc2bab | 325 | { |
4164020e | 326 | char error_buf[256] = {0}; |
27a14e13 | 327 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e | 328 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = {0}; |
81aa8979 | 329 | bt_common_lttng_live_url_parts_deleter partsDeleter {lttng_live_url_parts}; |
4164020e | 330 | int ret = -1; |
4164020e | 331 | |
d6ed88fe | 332 | if (viewer_connection->url.empty()) { |
4164020e SM |
333 | goto end; |
334 | } | |
335 | ||
d6ed88fe SM |
336 | lttng_live_url_parts = bt_common_parse_lttng_live_url(viewer_connection->url.c_str(), error_buf, |
337 | sizeof(error_buf)); | |
4164020e | 338 | if (!lttng_live_url_parts.proto) { |
27a14e13 | 339 | BT_CLOGE_APPEND_CAUSE("Invalid LTTng live URL format: %s", error_buf); |
4164020e SM |
340 | goto end; |
341 | } | |
2ec59b43 | 342 | viewer_connection->proto.reset(lttng_live_url_parts.proto); |
4164020e SM |
343 | lttng_live_url_parts.proto = NULL; |
344 | ||
2ec59b43 | 345 | viewer_connection->relay_hostname.reset(lttng_live_url_parts.hostname); |
4164020e SM |
346 | lttng_live_url_parts.hostname = NULL; |
347 | ||
348 | if (lttng_live_url_parts.port >= 0) { | |
349 | viewer_connection->port = lttng_live_url_parts.port; | |
350 | } else { | |
351 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; | |
352 | } | |
353 | ||
2ec59b43 | 354 | viewer_connection->target_hostname.reset(lttng_live_url_parts.target_hostname); |
4164020e SM |
355 | lttng_live_url_parts.target_hostname = NULL; |
356 | ||
357 | if (lttng_live_url_parts.session_name) { | |
2ec59b43 | 358 | viewer_connection->session_name.reset(lttng_live_url_parts.session_name); |
4164020e SM |
359 | lttng_live_url_parts.session_name = NULL; |
360 | } | |
361 | ||
362 | ret = 0; | |
7cdc2bab MD |
363 | |
364 | end: | |
4164020e | 365 | return ret; |
7cdc2bab MD |
366 | } |
367 | ||
4164020e SM |
368 | static enum lttng_live_viewer_status |
369 | lttng_live_handshake(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 370 | { |
4164020e SM |
371 | struct lttng_viewer_cmd cmd; |
372 | struct lttng_viewer_connect connect; | |
373 | enum lttng_live_viewer_status status; | |
27a14e13 | 374 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
375 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
376 | char cmd_buf[cmd_buf_len]; | |
377 | ||
27a14e13 SM |
378 | BT_CLOGD("Handshaking with the relay daemon: cmd=%s, major-version=%u, minor-version=%u", |
379 | lttng_viewer_command_string(LTTNG_VIEWER_CONNECT), LTTNG_LIVE_MAJOR, LTTNG_LIVE_MINOR); | |
4164020e SM |
380 | |
381 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
382 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
383 | cmd.cmd_version = htobe32(0); | |
384 | ||
385 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
386 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
387 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
388 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
389 | ||
390 | /* | |
391 | * Merge the cmd and connection request to prevent a write-write | |
392 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
393 | * second write to be performed quickly in presence of Nagle's algorithm | |
394 | */ | |
395 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
396 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
397 | ||
398 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
399 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 400 | viewer_handle_send_status(logCfg, status, "viewer connect command"); |
4164020e SM |
401 | goto end; |
402 | } | |
403 | ||
404 | status = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); | |
405 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 406 | viewer_handle_recv_status(logCfg, status, "viewer connect reply"); |
4164020e SM |
407 | goto end; |
408 | } | |
409 | ||
27a14e13 SM |
410 | BT_CLOGI("Received viewer session ID : %" PRIu64, |
411 | (uint64_t) be64toh(connect.viewer_session_id)); | |
412 | BT_CLOGI("Relayd version : %u.%u", be32toh(connect.major), be32toh(connect.minor)); | |
4164020e SM |
413 | |
414 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
27a14e13 | 415 | BT_CLOGE_APPEND_CAUSE("Incompatible lttng-relayd protocol"); |
4164020e SM |
416 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
417 | goto end; | |
418 | } | |
419 | /* Use the smallest protocol version implemented. */ | |
420 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
421 | viewer_connection->minor = be32toh(connect.minor); | |
422 | } else { | |
423 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
424 | } | |
425 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
426 | ||
427 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
428 | ||
429 | goto end; | |
f79c2d7a FD |
430 | |
431 | end: | |
4164020e | 432 | return status; |
7cdc2bab MD |
433 | } |
434 | ||
4164020e SM |
435 | static enum lttng_live_viewer_status |
436 | lttng_live_connect_viewer(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 437 | { |
4164020e SM |
438 | struct hostent *host; |
439 | struct sockaddr_in server_addr; | |
440 | enum lttng_live_viewer_status status; | |
27a14e13 | 441 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
442 | |
443 | if (parse_url(viewer_connection)) { | |
27a14e13 | 444 | BT_CLOGE_APPEND_CAUSE("Failed to parse URL"); |
4164020e SM |
445 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
446 | goto error; | |
447 | } | |
448 | ||
27a14e13 SM |
449 | BT_CLOGD("Connecting to hostname : %s, port : %d, " |
450 | "target hostname : %s, session name : %s, proto : %s", | |
451 | viewer_connection->relay_hostname->str, viewer_connection->port, | |
452 | !viewer_connection->target_hostname ? "<none>" : | |
453 | viewer_connection->target_hostname->str, | |
454 | !viewer_connection->session_name ? "<none>" : viewer_connection->session_name->str, | |
455 | viewer_connection->proto->str); | |
4164020e SM |
456 | |
457 | host = gethostbyname(viewer_connection->relay_hostname->str); | |
458 | if (!host) { | |
27a14e13 SM |
459 | BT_CLOGE_APPEND_CAUSE("Cannot lookup hostname: hostname=\"%s\"", |
460 | viewer_connection->relay_hostname->str); | |
4164020e SM |
461 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
462 | goto error; | |
463 | } | |
464 | ||
465 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { | |
27a14e13 | 466 | BT_CLOGE_APPEND_CAUSE("Socket creation failed: %s", bt_socket_errormsg()); |
4164020e SM |
467 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
468 | goto error; | |
469 | } | |
470 | ||
471 | server_addr.sin_family = AF_INET; | |
472 | server_addr.sin_port = htons(viewer_connection->port); | |
473 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
474 | memset(&(server_addr.sin_zero), 0, 8); | |
475 | ||
476 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
477 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { | |
27a14e13 | 478 | BT_CLOGE_APPEND_CAUSE("Connection failed: %s", bt_socket_errormsg()); |
4164020e SM |
479 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
480 | goto error; | |
481 | } | |
482 | ||
483 | status = lttng_live_handshake(viewer_connection); | |
484 | ||
485 | /* | |
486 | * Only print error and append cause in case of error. not in case of | |
487 | * interruption. | |
488 | */ | |
489 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
27a14e13 | 490 | BT_CLOGE_APPEND_CAUSE("Viewer handshake failed"); |
4164020e SM |
491 | goto error; |
492 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
493 | goto end; | |
494 | } | |
495 | ||
496 | goto end; | |
7cdc2bab MD |
497 | |
498 | error: | |
4164020e SM |
499 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
500 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
27a14e13 | 501 | BT_CLOGW("Error closing socket: %s.", bt_socket_errormsg()); |
4164020e SM |
502 | } |
503 | } | |
504 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
f79c2d7a | 505 | end: |
4164020e | 506 | return status; |
7cdc2bab MD |
507 | } |
508 | ||
4164020e | 509 | static void lttng_live_disconnect_viewer(struct live_viewer_connection *viewer_connection) |
7cdc2bab | 510 | { |
27a14e13 | 511 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
512 | |
513 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { | |
514 | return; | |
515 | } | |
516 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
27a14e13 | 517 | BT_CLOGW("Error closing socket: %s", bt_socket_errormsg()); |
4164020e SM |
518 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
519 | } | |
7cdc2bab MD |
520 | } |
521 | ||
4164020e SM |
522 | static int list_update_session(bt_value *results, const struct lttng_viewer_session *session, |
523 | bool *_found, struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 524 | { |
27a14e13 | 525 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
526 | int ret = 0; |
527 | uint64_t i, len; | |
528 | bt_value *map = NULL; | |
529 | bt_value *hostname = NULL; | |
530 | bt_value *session_name = NULL; | |
531 | bt_value *btval = NULL; | |
532 | bool found = false; | |
533 | ||
534 | len = bt_value_array_get_length(results); | |
535 | for (i = 0; i < len; i++) { | |
536 | const char *hostname_str = NULL; | |
537 | const char *session_name_str = NULL; | |
538 | ||
539 | map = bt_value_array_borrow_element_by_index(results, i); | |
540 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); | |
541 | if (!hostname) { | |
27a14e13 | 542 | BT_CLOGE_APPEND_CAUSE("Error borrowing \"target-hostname\" entry."); |
4164020e SM |
543 | ret = -1; |
544 | goto end; | |
545 | } | |
546 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); | |
547 | if (!session_name) { | |
27a14e13 | 548 | BT_CLOGE_APPEND_CAUSE("Error borrowing \"session-name\" entry."); |
4164020e SM |
549 | ret = -1; |
550 | goto end; | |
551 | } | |
552 | hostname_str = bt_value_string_get(hostname); | |
553 | session_name_str = bt_value_string_get(session_name); | |
554 | ||
555 | if (strcmp(session->hostname, hostname_str) == 0 && | |
556 | strcmp(session->session_name, session_name_str) == 0) { | |
557 | int64_t val; | |
558 | uint32_t streams = be32toh(session->streams); | |
559 | uint32_t clients = be32toh(session->clients); | |
560 | ||
561 | found = true; | |
562 | ||
563 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); | |
564 | if (!btval) { | |
27a14e13 | 565 | BT_CLOGE_APPEND_CAUSE("Error borrowing \"stream-count\" entry."); |
4164020e SM |
566 | ret = -1; |
567 | goto end; | |
568 | } | |
569 | val = bt_value_integer_unsigned_get(btval); | |
570 | /* sum */ | |
571 | val += streams; | |
572 | bt_value_integer_unsigned_set(btval, val); | |
573 | ||
574 | btval = bt_value_map_borrow_entry_value(map, "client-count"); | |
575 | if (!btval) { | |
27a14e13 | 576 | BT_CLOGE_APPEND_CAUSE("Error borrowing \"client-count\" entry."); |
4164020e SM |
577 | ret = -1; |
578 | goto end; | |
579 | } | |
580 | val = bt_value_integer_unsigned_get(btval); | |
581 | /* max */ | |
582 | val = bt_max_t(int64_t, clients, val); | |
583 | bt_value_integer_unsigned_set(btval, val); | |
584 | } | |
585 | ||
586 | if (found) { | |
587 | break; | |
588 | } | |
589 | } | |
7cdc2bab | 590 | end: |
4164020e SM |
591 | *_found = found; |
592 | return ret; | |
7cdc2bab MD |
593 | } |
594 | ||
d6ed88fe | 595 | static int list_append_session(bt_value *results, const std::string& base_url, |
4164020e SM |
596 | const struct lttng_viewer_session *session, |
597 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 598 | { |
4164020e | 599 | int ret = 0; |
27a14e13 | 600 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
601 | bt_value_map_insert_entry_status insert_status; |
602 | bt_value_array_append_element_status append_status; | |
603 | bt_value *map = NULL; | |
4164020e | 604 | bool found = false; |
cff22928 | 605 | std::string url; |
4164020e SM |
606 | |
607 | /* | |
608 | * If the session already exists, add the stream count to it, | |
609 | * and do max of client counts. | |
610 | */ | |
611 | ret = list_update_session(results, session, &found, viewer_connection); | |
612 | if (ret || found) { | |
613 | goto end; | |
614 | } | |
615 | ||
616 | map = bt_value_map_create(); | |
617 | if (!map) { | |
27a14e13 | 618 | BT_CLOGE_APPEND_CAUSE("Error creating map value."); |
4164020e SM |
619 | ret = -1; |
620 | goto end; | |
621 | } | |
622 | ||
d6ed88fe SM |
623 | if (base_url.empty()) { |
624 | BT_CLOGE_APPEND_CAUSE("Error: base_url empty."); | |
4164020e SM |
625 | ret = -1; |
626 | goto end; | |
627 | } | |
628 | /* | |
629 | * key = "url", | |
630 | * value = <string>, | |
631 | */ | |
d6ed88fe | 632 | url = base_url; |
cff22928 SM |
633 | url += "/host/"; |
634 | url += session->hostname; | |
635 | url += '/'; | |
636 | url += session->session_name; | |
4164020e | 637 | |
cff22928 | 638 | insert_status = bt_value_map_insert_string_entry(map, "url", url.c_str()); |
4164020e | 639 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
27a14e13 | 640 | BT_CLOGE_APPEND_CAUSE("Error inserting \"url\" entry."); |
4164020e SM |
641 | ret = -1; |
642 | goto end; | |
643 | } | |
644 | ||
645 | /* | |
646 | * key = "target-hostname", | |
647 | * value = <string>, | |
648 | */ | |
649 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", session->hostname); | |
650 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
27a14e13 | 651 | BT_CLOGE_APPEND_CAUSE("Error inserting \"target-hostname\" entry."); |
4164020e SM |
652 | ret = -1; |
653 | goto end; | |
654 | } | |
655 | ||
656 | /* | |
657 | * key = "session-name", | |
658 | * value = <string>, | |
659 | */ | |
660 | insert_status = bt_value_map_insert_string_entry(map, "session-name", session->session_name); | |
661 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
27a14e13 | 662 | BT_CLOGE_APPEND_CAUSE("Error inserting \"session-name\" entry."); |
4164020e SM |
663 | ret = -1; |
664 | goto end; | |
665 | } | |
666 | ||
667 | /* | |
668 | * key = "timer-us", | |
669 | * value = <integer>, | |
670 | */ | |
671 | { | |
672 | uint32_t live_timer = be32toh(session->live_timer); | |
673 | ||
674 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, "timer-us", live_timer); | |
675 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
27a14e13 | 676 | BT_CLOGE_APPEND_CAUSE("Error inserting \"timer-us\" entry."); |
4164020e SM |
677 | ret = -1; |
678 | goto end; | |
679 | } | |
680 | } | |
681 | ||
682 | /* | |
683 | * key = "stream-count", | |
684 | * value = <integer>, | |
685 | */ | |
686 | { | |
687 | uint32_t streams = be32toh(session->streams); | |
688 | ||
689 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, "stream-count", streams); | |
690 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
27a14e13 | 691 | BT_CLOGE_APPEND_CAUSE("Error inserting \"stream-count\" entry."); |
4164020e SM |
692 | ret = -1; |
693 | goto end; | |
694 | } | |
695 | } | |
696 | ||
697 | /* | |
698 | * key = "client-count", | |
699 | * value = <integer>, | |
700 | */ | |
701 | { | |
702 | uint32_t clients = be32toh(session->clients); | |
703 | ||
704 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, "client-count", clients); | |
705 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
27a14e13 | 706 | BT_CLOGE_APPEND_CAUSE("Error inserting \"client-count\" entry."); |
4164020e SM |
707 | ret = -1; |
708 | goto end; | |
709 | } | |
710 | } | |
711 | ||
712 | append_status = bt_value_array_append_element(results, map); | |
713 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
27a14e13 | 714 | BT_CLOGE_APPEND_CAUSE("Error appending map to results."); |
4164020e SM |
715 | ret = -1; |
716 | } | |
14f28187 | 717 | |
7cdc2bab | 718 | end: |
4164020e SM |
719 | BT_VALUE_PUT_REF_AND_RESET(map); |
720 | return ret; | |
7cdc2bab MD |
721 | } |
722 | ||
723 | /* | |
724 | * Data structure returned: | |
725 | * | |
726 | * { | |
727 | * <array> = { | |
728 | * [n] = { | |
729 | * <map> = { | |
730 | * { | |
731 | * key = "url", | |
732 | * value = <string>, | |
733 | * }, | |
734 | * { | |
735 | * key = "target-hostname", | |
736 | * value = <string>, | |
737 | * }, | |
738 | * { | |
739 | * key = "session-name", | |
740 | * value = <string>, | |
741 | * }, | |
742 | * { | |
743 | * key = "timer-us", | |
744 | * value = <integer>, | |
745 | * }, | |
746 | * { | |
747 | * key = "stream-count", | |
748 | * value = <integer>, | |
749 | * }, | |
750 | * { | |
751 | * key = "client-count", | |
752 | * value = <integer>, | |
753 | * }, | |
754 | * }, | |
755 | * } | |
756 | * } | |
757 | */ | |
758 | ||
759 | BT_HIDDEN | |
4164020e SM |
760 | bt_component_class_query_method_status |
761 | live_viewer_connection_list_sessions(struct live_viewer_connection *viewer_connection, | |
762 | const bt_value **user_result) | |
7cdc2bab | 763 | { |
27a14e13 | 764 | const bt2_common::LogCfg& logCfg = viewer_connection->logCfg; |
4164020e SM |
765 | bt_component_class_query_method_status status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; |
766 | bt_value *result = NULL; | |
767 | enum lttng_live_viewer_status viewer_status; | |
768 | struct lttng_viewer_cmd cmd; | |
769 | struct lttng_viewer_list_sessions list; | |
770 | uint32_t i, sessions_count; | |
771 | ||
772 | result = bt_value_array_create(); | |
773 | if (!result) { | |
27a14e13 | 774 | BT_CLOGE_APPEND_CAUSE("Error creating array"); |
4164020e SM |
775 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
776 | goto error; | |
777 | } | |
778 | ||
779 | BT_LOGD("Requesting list of sessions: cmd=%s", | |
780 | lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS)); | |
781 | ||
782 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
783 | cmd.data_size = htobe64((uint64_t) 0); | |
784 | cmd.cmd_version = htobe32(0); | |
785 | ||
786 | viewer_status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); | |
787 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
27a14e13 | 788 | BT_CLOGE_APPEND_CAUSE("Error sending list sessions command"); |
4164020e SM |
789 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
790 | goto error; | |
791 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
792 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
793 | goto error; | |
794 | } | |
795 | ||
796 | viewer_status = lttng_live_recv(viewer_connection, &list, sizeof(list)); | |
797 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
27a14e13 | 798 | BT_CLOGE_APPEND_CAUSE("Error receiving session list"); |
4164020e SM |
799 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
800 | goto error; | |
801 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
802 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
803 | goto error; | |
804 | } | |
805 | ||
806 | sessions_count = be32toh(list.sessions_count); | |
807 | for (i = 0; i < sessions_count; i++) { | |
808 | struct lttng_viewer_session lsession; | |
809 | ||
810 | viewer_status = lttng_live_recv(viewer_connection, &lsession, sizeof(lsession)); | |
811 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
27a14e13 | 812 | BT_CLOGE_APPEND_CAUSE("Error receiving session:"); |
4164020e SM |
813 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
814 | goto error; | |
815 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
816 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
817 | goto error; | |
818 | } | |
819 | ||
820 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
821 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
822 | if (list_append_session(result, viewer_connection->url, &lsession, viewer_connection)) { | |
27a14e13 | 823 | BT_CLOGE_APPEND_CAUSE("Error appending session"); |
4164020e SM |
824 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
825 | goto error; | |
826 | } | |
827 | } | |
828 | ||
829 | *user_result = result; | |
830 | goto end; | |
7cdc2bab | 831 | error: |
4164020e | 832 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 833 | end: |
4164020e | 834 | return status; |
7cdc2bab MD |
835 | } |
836 | ||
4164020e SM |
837 | static enum lttng_live_viewer_status |
838 | lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab | 839 | { |
4164020e SM |
840 | struct lttng_viewer_cmd cmd; |
841 | struct lttng_viewer_list_sessions list; | |
842 | struct lttng_viewer_session lsession; | |
843 | uint32_t i, sessions_count; | |
844 | uint64_t session_id; | |
845 | enum lttng_live_viewer_status status; | |
772808ca | 846 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
27a14e13 | 847 | const bt2_common::LogCfg& logCfg = lttng_live_msg_iter->logCfg; |
4164020e | 848 | |
27a14e13 SM |
849 | BT_CLOGD("Asking the relay daemon for the list of sessions: cmd=%s", |
850 | lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS)); | |
4164020e SM |
851 | |
852 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
853 | cmd.data_size = htobe64((uint64_t) 0); | |
854 | cmd.cmd_version = htobe32(0); | |
855 | ||
856 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); | |
857 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 858 | viewer_handle_send_status(logCfg, status, "list sessions command"); |
4164020e SM |
859 | goto end; |
860 | } | |
861 | ||
862 | status = lttng_live_recv(viewer_connection, &list, sizeof(list)); | |
863 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 864 | viewer_handle_recv_status(logCfg, status, "session list reply"); |
4164020e SM |
865 | goto end; |
866 | } | |
867 | ||
868 | sessions_count = be32toh(list.sessions_count); | |
869 | for (i = 0; i < sessions_count; i++) { | |
870 | status = lttng_live_recv(viewer_connection, &lsession, sizeof(lsession)); | |
871 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 872 | viewer_handle_recv_status(logCfg, status, "session reply"); |
4164020e SM |
873 | goto end; |
874 | } | |
875 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
876 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
877 | session_id = be64toh(lsession.id); | |
878 | ||
27a14e13 SM |
879 | BT_CLOGI("Adding session to internal list: " |
880 | "session-id=%" PRIu64 ", hostname=\"%s\", session-name=\"%s\"", | |
881 | session_id, lsession.hostname, lsession.session_name); | |
4164020e SM |
882 | |
883 | if ((strncmp(lsession.session_name, viewer_connection->session_name->str, | |
884 | LTTNG_VIEWER_NAME_MAX) == 0) && | |
885 | (strncmp(lsession.hostname, viewer_connection->target_hostname->str, | |
886 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { | |
887 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, lsession.hostname, | |
888 | lsession.session_name)) { | |
27a14e13 | 889 | BT_CLOGE_APPEND_CAUSE("Failed to add live session"); |
4164020e SM |
890 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
891 | goto end; | |
892 | } | |
893 | } | |
894 | } | |
895 | ||
896 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
7cdc2bab | 897 | |
f79c2d7a | 898 | end: |
4164020e | 899 | return status; |
7cdc2bab MD |
900 | } |
901 | ||
902 | BT_HIDDEN | |
4164020e SM |
903 | enum lttng_live_viewer_status |
904 | lttng_live_create_viewer_session(struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab | 905 | { |
4164020e SM |
906 | struct lttng_viewer_cmd cmd; |
907 | struct lttng_viewer_create_session_response resp; | |
908 | enum lttng_live_viewer_status status; | |
772808ca | 909 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
27a14e13 | 910 | const bt2_common::LogCfg& logCfg = lttng_live_msg_iter->logCfg; |
4164020e | 911 | |
27a14e13 SM |
912 | BT_CLOGD("Creating a viewer session: cmd=%s", |
913 | lttng_viewer_command_string(LTTNG_VIEWER_CREATE_SESSION)); | |
4164020e SM |
914 | |
915 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
916 | cmd.data_size = htobe64((uint64_t) 0); | |
917 | cmd.cmd_version = htobe32(0); | |
918 | ||
919 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); | |
920 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 921 | viewer_handle_send_status(logCfg, status, "create session command"); |
4164020e SM |
922 | goto end; |
923 | } | |
924 | ||
925 | status = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); | |
926 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 927 | viewer_handle_recv_status(logCfg, status, "create session reply"); |
4164020e SM |
928 | goto end; |
929 | } | |
930 | ||
931 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
27a14e13 | 932 | BT_CLOGE_APPEND_CAUSE("Error creating viewer session"); |
4164020e SM |
933 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
934 | goto end; | |
935 | } | |
936 | ||
937 | status = lttng_live_query_session_ids(lttng_live_msg_iter); | |
938 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
27a14e13 | 939 | BT_CLOGE_APPEND_CAUSE("Failed to query live viewer session ids"); |
4164020e SM |
940 | goto end; |
941 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
942 | goto end; | |
943 | } | |
7cdc2bab | 944 | |
f79c2d7a | 945 | end: |
4164020e | 946 | return status; |
7cdc2bab MD |
947 | } |
948 | ||
4164020e SM |
949 | static enum lttng_live_viewer_status receive_streams(struct lttng_live_session *session, |
950 | uint32_t stream_count, | |
951 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 952 | { |
4164020e SM |
953 | uint32_t i; |
954 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
955 | enum lttng_live_viewer_status status; | |
772808ca | 956 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
27a14e13 | 957 | const bt2_common::LogCfg& logCfg = session->logCfg; |
4164020e | 958 | |
27a14e13 | 959 | BT_CLOGI("Getting %" PRIu32 " new streams", stream_count); |
4164020e SM |
960 | for (i = 0; i < stream_count; i++) { |
961 | struct lttng_viewer_stream stream; | |
962 | struct lttng_live_stream_iterator *live_stream; | |
963 | uint64_t stream_id; | |
964 | uint64_t ctf_trace_id; | |
965 | ||
966 | status = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); | |
967 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 968 | viewer_handle_recv_status(logCfg, status, "stream reply"); |
4164020e SM |
969 | goto end; |
970 | } | |
971 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
972 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
973 | stream_id = be64toh(stream.id); | |
974 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
975 | ||
976 | if (stream.metadata_flag) { | |
27a14e13 SM |
977 | BT_CLOGI(" metadata stream %" PRIu64 " : %s/%s", stream_id, stream.path_name, |
978 | stream.channel_name); | |
4164020e SM |
979 | if (lttng_live_metadata_create_stream(session, ctf_trace_id, stream_id, |
980 | stream.path_name)) { | |
27a14e13 | 981 | BT_CLOGE_APPEND_CAUSE("Error creating metadata stream"); |
4164020e SM |
982 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
983 | goto end; | |
984 | } | |
985 | session->lazy_stream_msg_init = true; | |
986 | } else { | |
27a14e13 SM |
987 | BT_CLOGI(" stream %" PRIu64 " : %s/%s", stream_id, stream.path_name, |
988 | stream.channel_name); | |
4164020e SM |
989 | live_stream = |
990 | lttng_live_stream_iterator_create(session, ctf_trace_id, stream_id, self_msg_iter); | |
991 | if (!live_stream) { | |
27a14e13 | 992 | BT_CLOGE_APPEND_CAUSE("Error creating stream"); |
4164020e SM |
993 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
994 | goto end; | |
995 | } | |
996 | } | |
997 | } | |
998 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
7cdc2bab | 999 | |
f79c2d7a | 1000 | end: |
4164020e | 1001 | return status; |
7cdc2bab MD |
1002 | } |
1003 | ||
1004 | BT_HIDDEN | |
4164020e SM |
1005 | enum lttng_live_viewer_status lttng_live_session_attach(struct lttng_live_session *session, |
1006 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1007 | { |
4164020e SM |
1008 | struct lttng_viewer_cmd cmd; |
1009 | enum lttng_live_viewer_status status; | |
1010 | struct lttng_viewer_attach_session_request rq; | |
1011 | struct lttng_viewer_attach_session_response rp; | |
1012 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
772808ca | 1013 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
27a14e13 | 1014 | const bt2_common::LogCfg& logCfg = session->logCfg; |
4164020e SM |
1015 | uint64_t session_id = session->id; |
1016 | uint32_t streams_count; | |
1017 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1018 | char cmd_buf[cmd_buf_len]; | |
1019 | ||
27a14e13 SM |
1020 | BT_CLOGD("Attaching to session: cmd=%s, session-id=%" PRIu64 ", seek=%s", |
1021 | lttng_viewer_command_string(LTTNG_VIEWER_ATTACH_SESSION), session_id, | |
1022 | lttng_viewer_seek_string(LTTNG_VIEWER_SEEK_LAST)); | |
4164020e SM |
1023 | |
1024 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); | |
1025 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1026 | cmd.cmd_version = htobe32(0); | |
1027 | ||
1028 | memset(&rq, 0, sizeof(rq)); | |
1029 | rq.session_id = htobe64(session_id); | |
1030 | // TODO: add cmd line parameter to select seek beginning | |
1031 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
1032 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
1033 | ||
1034 | /* | |
1035 | * Merge the cmd and connection request to prevent a write-write | |
1036 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1037 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1038 | */ | |
1039 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1040 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1041 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1042 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1043 | viewer_handle_send_status(logCfg, status, "attach session command"); |
4164020e SM |
1044 | goto end; |
1045 | } | |
1046 | ||
1047 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1048 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1049 | viewer_handle_recv_status(logCfg, status, "attach session reply"); |
4164020e SM |
1050 | goto end; |
1051 | } | |
1052 | ||
1053 | streams_count = be32toh(rp.streams_count); | |
1054 | switch (be32toh(rp.status)) { | |
1055 | case LTTNG_VIEWER_ATTACH_OK: | |
1056 | break; | |
1057 | case LTTNG_VIEWER_ATTACH_UNK: | |
27a14e13 | 1058 | BT_CLOGE_APPEND_CAUSE("Session id %" PRIu64 " is unknown", session_id); |
4164020e SM |
1059 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1060 | goto end; | |
1061 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
27a14e13 | 1062 | BT_CLOGE_APPEND_CAUSE("There is already a viewer attached to this session"); |
4164020e SM |
1063 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1064 | goto end; | |
1065 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
27a14e13 | 1066 | BT_CLOGE_APPEND_CAUSE("Not a live session"); |
4164020e SM |
1067 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1068 | goto end; | |
1069 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
27a14e13 | 1070 | BT_CLOGE_APPEND_CAUSE("Wrong seek parameter"); |
4164020e SM |
1071 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1072 | goto end; | |
1073 | default: | |
27a14e13 | 1074 | BT_CLOGE_APPEND_CAUSE("Unknown attach return code %u", be32toh(rp.status)); |
4164020e SM |
1075 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1076 | goto end; | |
1077 | } | |
1078 | ||
1079 | /* We receive the initial list of streams. */ | |
1080 | status = receive_streams(session, streams_count, self_msg_iter); | |
1081 | switch (status) { | |
1082 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
1083 | break; | |
1084 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
1085 | goto end; | |
1086 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
27a14e13 | 1087 | BT_CLOGE_APPEND_CAUSE("Error receiving streams"); |
4164020e SM |
1088 | goto end; |
1089 | default: | |
1090 | bt_common_abort(); | |
1091 | } | |
1092 | ||
1093 | session->attached = true; | |
1094 | session->new_streams_needed = false; | |
7cdc2bab | 1095 | |
eee8e741 | 1096 | end: |
4164020e | 1097 | return status; |
7cdc2bab MD |
1098 | } |
1099 | ||
1100 | BT_HIDDEN | |
4164020e | 1101 | enum lttng_live_viewer_status lttng_live_session_detach(struct lttng_live_session *session) |
7cdc2bab | 1102 | { |
4164020e SM |
1103 | struct lttng_viewer_cmd cmd; |
1104 | enum lttng_live_viewer_status status; | |
1105 | struct lttng_viewer_detach_session_request rq; | |
1106 | struct lttng_viewer_detach_session_response rp; | |
1107 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
772808ca | 1108 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
4164020e SM |
1109 | uint64_t session_id = session->id; |
1110 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1111 | char cmd_buf[cmd_buf_len]; | |
27a14e13 | 1112 | const bt2_common::LogCfg& logCfg = session->logCfg; |
4164020e SM |
1113 | |
1114 | /* | |
1115 | * The session might already be detached and the viewer socket might | |
1116 | * already been closed. This happens when calling this function when | |
1117 | * tearing down the graph after an error. | |
1118 | */ | |
1119 | if (!session->attached || viewer_connection->control_sock == BT_INVALID_SOCKET) { | |
1120 | return LTTNG_LIVE_VIEWER_STATUS_OK; | |
1121 | } | |
1122 | ||
27a14e13 SM |
1123 | BT_CLOGD("Detaching from session: cmd=%s, session-id=%" PRIu64, |
1124 | lttng_viewer_command_string(LTTNG_VIEWER_DETACH_SESSION), session_id); | |
4164020e SM |
1125 | |
1126 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
1127 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1128 | cmd.cmd_version = htobe32(0); | |
1129 | ||
1130 | memset(&rq, 0, sizeof(rq)); | |
1131 | rq.session_id = htobe64(session_id); | |
1132 | ||
1133 | /* | |
1134 | * Merge the cmd and connection request to prevent a write-write | |
1135 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1136 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1137 | */ | |
1138 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1139 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1140 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1141 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1142 | viewer_handle_send_status(logCfg, status, "detach session command"); |
4164020e SM |
1143 | goto end; |
1144 | } | |
1145 | ||
1146 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1147 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1148 | viewer_handle_recv_status(logCfg, status, "detach session reply"); |
4164020e SM |
1149 | goto end; |
1150 | } | |
1151 | ||
1152 | switch (be32toh(rp.status)) { | |
1153 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
1154 | break; | |
1155 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
27a14e13 | 1156 | BT_CLOGW("Session id %" PRIu64 " is unknown", session_id); |
4164020e SM |
1157 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1158 | goto end; | |
1159 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
27a14e13 | 1160 | BT_CLOGW("Error detaching session id %" PRIu64 "", session_id); |
4164020e SM |
1161 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1162 | goto end; | |
1163 | default: | |
27a14e13 | 1164 | BT_CLOGE("Unknown detach return code %u", be32toh(rp.status)); |
4164020e SM |
1165 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1166 | goto end; | |
1167 | } | |
1168 | ||
1169 | session->attached = false; | |
1170 | ||
1171 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
7cdc2bab | 1172 | |
f79c2d7a | 1173 | end: |
4164020e | 1174 | return status; |
7cdc2bab MD |
1175 | } |
1176 | ||
1177 | BT_HIDDEN | |
4164020e | 1178 | enum lttng_live_get_one_metadata_status |
c114204d | 1179 | lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, std::vector<char>& buf) |
7cdc2bab | 1180 | { |
4164020e SM |
1181 | uint64_t len = 0; |
1182 | enum lttng_live_get_one_metadata_status status; | |
1183 | enum lttng_live_viewer_status viewer_status; | |
1184 | struct lttng_viewer_cmd cmd; | |
1185 | struct lttng_viewer_get_metadata rq; | |
1186 | struct lttng_viewer_metadata_packet rp; | |
dbd1827b | 1187 | std::vector<char> data; |
4164020e SM |
1188 | struct lttng_live_session *session = trace->session; |
1189 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
a0843c0b | 1190 | struct lttng_live_metadata *metadata = trace->metadata.get(); |
772808ca | 1191 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
27a14e13 | 1192 | const bt2_common::LogCfg& logCfg = trace->logCfg; |
4164020e SM |
1193 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1194 | char cmd_buf[cmd_buf_len]; | |
1195 | ||
27a14e13 SM |
1196 | BT_CLOGD("Requesting new metadata for trace:" |
1197 | "cmd=%s, trace-id=%" PRIu64 ", metadata-stream-id=%" PRIu64, | |
1198 | lttng_viewer_command_string(LTTNG_VIEWER_GET_METADATA), trace->id, | |
1199 | metadata->stream_id); | |
4164020e SM |
1200 | |
1201 | rq.stream_id = htobe64(metadata->stream_id); | |
1202 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1203 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1204 | cmd.cmd_version = htobe32(0); | |
1205 | ||
1206 | /* | |
1207 | * Merge the cmd and connection request to prevent a write-write | |
1208 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1209 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1210 | */ | |
1211 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1212 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1213 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1214 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1215 | viewer_handle_send_status(logCfg, viewer_status, "get metadata command"); |
4164020e SM |
1216 | status = (enum lttng_live_get_one_metadata_status) viewer_status; |
1217 | goto end; | |
1218 | } | |
1219 | ||
1220 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1221 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1222 | viewer_handle_recv_status(logCfg, viewer_status, "get metadata reply"); |
4164020e SM |
1223 | status = (enum lttng_live_get_one_metadata_status) viewer_status; |
1224 | goto end; | |
1225 | } | |
1226 | ||
1227 | switch (be32toh(rp.status)) { | |
1228 | case LTTNG_VIEWER_METADATA_OK: | |
27a14e13 | 1229 | BT_CLOGD("Received get_metadata response: ok"); |
4164020e SM |
1230 | break; |
1231 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
27a14e13 | 1232 | BT_CLOGD("Received get_metadata response: no new"); |
4164020e SM |
1233 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END; |
1234 | goto end; | |
1235 | case LTTNG_VIEWER_METADATA_ERR: | |
1236 | /* | |
1237 | * The Relayd cannot find this stream id. Maybe its | |
1238 | * gone already. This can happen in short lived UST app | |
1239 | * in a per-pid session. | |
1240 | */ | |
27a14e13 | 1241 | BT_CLOGD("Received get_metadata response: error"); |
4164020e SM |
1242 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED; |
1243 | goto end; | |
1244 | default: | |
27a14e13 | 1245 | BT_CLOGE_APPEND_CAUSE("Received get_metadata response: unknown"); |
4164020e SM |
1246 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1247 | goto end; | |
1248 | } | |
1249 | ||
1250 | len = be64toh(rp.len); | |
c5ce3927 FD |
1251 | if (len == 0) { |
1252 | /* | |
1253 | * We received a `LTTNG_VIEWER_METADATA_OK` with a packet | |
1254 | * length of 0. This means we must try again. This scenario | |
1255 | * arises when a clear command is performed on an lttng session. | |
1256 | */ | |
27a14e13 | 1257 | BT_CLOGD("Expecting a metadata packet of size 0. Retry to get a packet from the relay."); |
c5ce3927 FD |
1258 | goto empty_metadata_packet_retry; |
1259 | } | |
1260 | ||
27a14e13 | 1261 | BT_CLOGD("Writing %" PRIu64 " bytes to metadata", len); |
4164020e | 1262 | if (len <= 0) { |
27a14e13 | 1263 | BT_CLOGE_APPEND_CAUSE("Erroneous response length"); |
4164020e SM |
1264 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1265 | goto end; | |
1266 | } | |
1267 | ||
dbd1827b | 1268 | data.resize(len); |
4164020e | 1269 | |
dbd1827b | 1270 | viewer_status = lttng_live_recv(viewer_connection, data.data(), len); |
4164020e | 1271 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { |
27a14e13 | 1272 | viewer_handle_recv_status(logCfg, viewer_status, "get metadata packet"); |
4164020e SM |
1273 | status = (enum lttng_live_get_one_metadata_status) viewer_status; |
1274 | goto end; | |
1275 | } | |
1276 | ||
1277 | /* | |
1278 | * Write the metadata to the file handle. | |
1279 | */ | |
dbd1827b | 1280 | buf.insert(buf.end(), data.begin(), data.end()); |
4164020e | 1281 | |
c5ce3927 | 1282 | empty_metadata_packet_retry: |
4164020e | 1283 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK; |
c28512ab | 1284 | |
c28512ab | 1285 | end: |
4164020e | 1286 | return status; |
7cdc2bab MD |
1287 | } |
1288 | ||
1289 | /* | |
1290 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1291 | */ | |
4164020e SM |
1292 | static void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, |
1293 | struct packet_index *pindex) | |
7cdc2bab | 1294 | { |
4164020e SM |
1295 | BT_ASSERT(lindex); |
1296 | BT_ASSERT(pindex); | |
1297 | ||
1298 | pindex->offset = be64toh(lindex->offset); | |
1299 | pindex->packet_size = be64toh(lindex->packet_size); | |
1300 | pindex->content_size = be64toh(lindex->content_size); | |
1301 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1302 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1303 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
7cdc2bab MD |
1304 | } |
1305 | ||
4164020e | 1306 | static void lttng_live_need_new_streams(struct lttng_live_msg_iter *lttng_live_msg_iter) |
36e94ad6 | 1307 | { |
27a14e13 | 1308 | const bt2_common::LogCfg& logCfg = lttng_live_msg_iter->logCfg; |
4164020e | 1309 | |
bef0ed48 | 1310 | for (lttng_live_session::UP& session : lttng_live_msg_iter->sessions) { |
27a14e13 SM |
1311 | BT_CLOGD("Marking session as needing new streams: " |
1312 | "session-id=%" PRIu64, | |
1313 | session->id); | |
4164020e SM |
1314 | session->new_streams_needed = true; |
1315 | } | |
36e94ad6 FD |
1316 | } |
1317 | ||
7cdc2bab | 1318 | BT_HIDDEN |
4164020e SM |
1319 | enum lttng_live_iterator_status |
1320 | lttng_live_get_next_index(struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1321 | struct lttng_live_stream_iterator *stream, struct packet_index *index) | |
7cdc2bab | 1322 | { |
4164020e SM |
1323 | struct lttng_viewer_cmd cmd; |
1324 | struct lttng_viewer_get_next_index rq; | |
1325 | enum lttng_live_viewer_status viewer_status; | |
1326 | struct lttng_viewer_index rp; | |
1327 | enum lttng_live_iterator_status status; | |
772808ca | 1328 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
4164020e SM |
1329 | struct lttng_live_trace *trace = stream->trace; |
1330 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1331 | char cmd_buf[cmd_buf_len]; | |
1332 | uint32_t flags, rp_status; | |
27a14e13 | 1333 | const bt2_common::LogCfg& logCfg = lttng_live_msg_iter->logCfg; |
4164020e | 1334 | |
27a14e13 SM |
1335 | BT_CLOGD("Requesting next index for stream: cmd=%s, " |
1336 | "viewer-stream-id=%" PRIu64, | |
1337 | lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX), stream->viewer_stream_id); | |
4164020e SM |
1338 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); |
1339 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1340 | cmd.cmd_version = htobe32(0); | |
1341 | ||
1342 | memset(&rq, 0, sizeof(rq)); | |
1343 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1344 | ||
1345 | /* | |
1346 | * Merge the cmd and connection request to prevent a write-write | |
1347 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1348 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1349 | */ | |
1350 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1351 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1352 | ||
1353 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1354 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1355 | viewer_handle_send_status(logCfg, viewer_status, "get next index command"); |
4164020e SM |
1356 | goto error; |
1357 | } | |
1358 | ||
1359 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1360 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1361 | viewer_handle_recv_status(logCfg, viewer_status, "get next index reply"); |
4164020e SM |
1362 | goto error; |
1363 | } | |
1364 | ||
1365 | flags = be32toh(rp.flags); | |
1366 | rp_status = be32toh(rp.status); | |
1367 | ||
27a14e13 SM |
1368 | BT_CLOGD("Received response from relay daemon: cmd=%s, response=%s", |
1369 | lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX), | |
1370 | lttng_viewer_next_index_return_code_string(rp_status)); | |
4164020e SM |
1371 | switch (rp_status) { |
1372 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1373 | { | |
1374 | uint64_t ctf_stream_class_id; | |
1375 | ||
1376 | memset(index, 0, sizeof(struct packet_index)); | |
1377 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
1378 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; | |
1379 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1380 | if (stream->ctf_stream_class_id.is_set) { | |
1381 | BT_ASSERT(stream->ctf_stream_class_id.value == ctf_stream_class_id); | |
1382 | } else { | |
1383 | stream->ctf_stream_class_id.value = ctf_stream_class_id; | |
1384 | stream->ctf_stream_class_id.is_set = true; | |
1385 | } | |
1386 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_QUIESCENT); | |
1387 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1388 | break; | |
1389 | } | |
1390 | case LTTNG_VIEWER_INDEX_OK: | |
1391 | { | |
1392 | uint64_t ctf_stream_class_id; | |
1393 | ||
1394 | lttng_index_to_packet_index(&rp, index); | |
1395 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1396 | if (stream->ctf_stream_class_id.is_set) { | |
1397 | BT_ASSERT(stream->ctf_stream_class_id.value == ctf_stream_class_id); | |
1398 | } else { | |
1399 | stream->ctf_stream_class_id.value = ctf_stream_class_id; | |
1400 | stream->ctf_stream_class_id.is_set = true; | |
1401 | } | |
1402 | ||
1403 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_DATA); | |
1404 | ||
1405 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
27a14e13 SM |
1406 | BT_CLOGD("Marking trace as needing new metadata: " |
1407 | "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64, | |
1408 | lttng_viewer_next_index_return_code_string(rp_status), trace->id); | |
4164020e SM |
1409 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
1410 | } | |
1411 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
27a14e13 SM |
1412 | BT_CLOGD("Marking all sessions as possibly needing new streams: " |
1413 | "response=%s, response-flag=NEW_STREAM", | |
1414 | lttng_viewer_next_index_return_code_string(rp_status)); | |
4164020e SM |
1415 | lttng_live_need_new_streams(lttng_live_msg_iter); |
1416 | } | |
1417 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1418 | break; | |
1419 | } | |
1420 | case LTTNG_VIEWER_INDEX_RETRY: | |
1421 | memset(index, 0, sizeof(struct packet_index)); | |
1422 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA); | |
1423 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
1424 | goto end; | |
1425 | case LTTNG_VIEWER_INDEX_HUP: | |
1426 | memset(index, 0, sizeof(struct packet_index)); | |
1427 | index->offset = EOF; | |
1428 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_EOF); | |
1429 | stream->has_stream_hung_up = true; | |
1430 | status = LTTNG_LIVE_ITERATOR_STATUS_END; | |
1431 | break; | |
1432 | case LTTNG_VIEWER_INDEX_ERR: | |
1433 | memset(index, 0, sizeof(struct packet_index)); | |
1434 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA); | |
1435 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1436 | goto end; | |
1437 | default: | |
27a14e13 | 1438 | BT_CLOGD("Received get_next_index response: unknown value"); |
4164020e SM |
1439 | memset(index, 0, sizeof(struct packet_index)); |
1440 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA); | |
1441 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1442 | goto end; | |
1443 | } | |
1444 | goto end; | |
7cdc2bab MD |
1445 | |
1446 | error: | |
4164020e | 1447 | status = viewer_status_to_live_iterator_status(viewer_status); |
f79c2d7a | 1448 | end: |
4164020e | 1449 | return status; |
7cdc2bab MD |
1450 | } |
1451 | ||
1452 | BT_HIDDEN | |
4164020e SM |
1453 | enum ctf_msg_iter_medium_status |
1454 | lttng_live_get_stream_bytes(struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1455 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1456 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1457 | { |
4164020e SM |
1458 | enum ctf_msg_iter_medium_status status; |
1459 | enum lttng_live_viewer_status viewer_status; | |
1460 | struct lttng_viewer_trace_packet rp; | |
1461 | struct lttng_viewer_cmd cmd; | |
1462 | struct lttng_viewer_get_packet rq; | |
772808ca | 1463 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
27a14e13 | 1464 | const bt2_common::LogCfg& logCfg = lttng_live_msg_iter->logCfg; |
4164020e SM |
1465 | struct lttng_live_trace *trace = stream->trace; |
1466 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1467 | char cmd_buf[cmd_buf_len]; | |
1468 | uint32_t flags, rp_status; | |
1469 | ||
27a14e13 SM |
1470 | BT_CLOGD("Requesting data from stream: cmd=%s, " |
1471 | "offset=%" PRIu64 ", request-len=%" PRIu64, | |
1472 | lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET), offset, req_len); | |
4164020e SM |
1473 | |
1474 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1475 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1476 | cmd.cmd_version = htobe32(0); | |
1477 | ||
1478 | memset(&rq, 0, sizeof(rq)); | |
1479 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1480 | rq.offset = htobe64(offset); | |
1481 | rq.len = htobe32(req_len); | |
1482 | ||
1483 | /* | |
1484 | * Merge the cmd and connection request to prevent a write-write | |
1485 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1486 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1487 | */ | |
1488 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1489 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1490 | ||
1491 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1492 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1493 | viewer_handle_send_status(logCfg, viewer_status, "get data packet command"); |
4164020e SM |
1494 | goto error_convert_status; |
1495 | } | |
1496 | ||
1497 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1498 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1499 | viewer_handle_recv_status(logCfg, viewer_status, "get data packet reply"); |
4164020e SM |
1500 | goto error_convert_status; |
1501 | } | |
1502 | ||
1503 | flags = be32toh(rp.flags); | |
1504 | rp_status = be32toh(rp.status); | |
1505 | ||
27a14e13 SM |
1506 | BT_CLOGD("Received response from relay daemon: cmd=%s, response=%s", |
1507 | lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET), | |
1508 | lttng_viewer_get_packet_return_code_string(rp_status)); | |
4164020e SM |
1509 | switch (rp_status) { |
1510 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1511 | req_len = be32toh(rp.len); | |
27a14e13 SM |
1512 | BT_CLOGD("Got packet from relay daemon: response=%s, packet-len=%" PRIu64 "", |
1513 | lttng_viewer_get_packet_return_code_string(rp_status), req_len); | |
4164020e SM |
1514 | break; |
1515 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1516 | /* Unimplemented by relay daemon */ | |
1517 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
1518 | goto end; | |
1519 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1520 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
27a14e13 SM |
1521 | BT_CLOGD("Marking trace as needing new metadata: " |
1522 | "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64, | |
1523 | lttng_viewer_next_index_return_code_string(rp_status), trace->id); | |
4164020e SM |
1524 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
1525 | } | |
1526 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
27a14e13 SM |
1527 | BT_CLOGD("Marking all sessions as possibly needing new streams: " |
1528 | "response=%s, response-flag=NEW_STREAM", | |
1529 | lttng_viewer_next_index_return_code_string(rp_status)); | |
4164020e SM |
1530 | lttng_live_need_new_streams(lttng_live_msg_iter); |
1531 | } | |
1532 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
1533 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
27a14e13 SM |
1534 | BT_CLOGD("Reply with any one flags set means we should retry: response=%s", |
1535 | lttng_viewer_get_packet_return_code_string(rp_status)); | |
4164020e SM |
1536 | goto end; |
1537 | } | |
27a14e13 | 1538 | BT_CLOGE_APPEND_CAUSE("Received get_data_packet response: error"); |
4164020e SM |
1539 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
1540 | goto end; | |
1541 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
1542 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; | |
1543 | goto end; | |
1544 | default: | |
27a14e13 | 1545 | BT_CLOGE_APPEND_CAUSE("Received get_data_packet response: unknown (%d)", rp_status); |
4164020e SM |
1546 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
1547 | goto end; | |
1548 | } | |
1549 | ||
1550 | if (req_len == 0) { | |
1551 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
1552 | goto end; | |
1553 | } | |
1554 | ||
1555 | viewer_status = lttng_live_recv(viewer_connection, buf, req_len); | |
1556 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1557 | viewer_handle_recv_status(logCfg, viewer_status, "get data packet"); |
4164020e SM |
1558 | goto error_convert_status; |
1559 | } | |
1560 | *recv_len = req_len; | |
1561 | ||
1562 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
1563 | goto end; | |
f79c2d7a | 1564 | |
535fb48a | 1565 | error_convert_status: |
4164020e | 1566 | status = viewer_status_to_ctf_msg_iter_medium_status(viewer_status); |
f79c2d7a | 1567 | end: |
4164020e | 1568 | return status; |
7cdc2bab MD |
1569 | } |
1570 | ||
1571 | /* | |
1572 | * Request new streams for a session. | |
1573 | */ | |
1574 | BT_HIDDEN | |
4164020e SM |
1575 | enum lttng_live_iterator_status |
1576 | lttng_live_session_get_new_streams(struct lttng_live_session *session, | |
1577 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1578 | { |
4164020e SM |
1579 | enum lttng_live_iterator_status status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1580 | struct lttng_viewer_cmd cmd; | |
1581 | struct lttng_viewer_new_streams_request rq; | |
1582 | struct lttng_viewer_new_streams_response rp; | |
1583 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
1584 | enum lttng_live_viewer_status viewer_status; | |
772808ca | 1585 | live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection.get(); |
27a14e13 | 1586 | const bt2_common::LogCfg& logCfg = lttng_live_msg_iter->logCfg; |
4164020e SM |
1587 | uint32_t streams_count; |
1588 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1589 | char cmd_buf[cmd_buf_len]; | |
1590 | ||
1591 | if (!session->new_streams_needed) { | |
1592 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1593 | goto end; | |
1594 | } | |
1595 | ||
27a14e13 SM |
1596 | BT_CLOGD("Requesting new streams for session: cmd=%s, " |
1597 | "session-id=%" PRIu64, | |
1598 | lttng_viewer_command_string(LTTNG_VIEWER_GET_NEW_STREAMS), session->id); | |
4164020e SM |
1599 | |
1600 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1601 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1602 | cmd.cmd_version = htobe32(0); | |
1603 | ||
1604 | memset(&rq, 0, sizeof(rq)); | |
1605 | rq.session_id = htobe64(session->id); | |
1606 | ||
1607 | /* | |
1608 | * Merge the cmd and connection request to prevent a write-write | |
1609 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1610 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1611 | */ | |
1612 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1613 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1614 | ||
1615 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1616 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1617 | viewer_handle_send_status(logCfg, viewer_status, "get new streams command"); |
4164020e SM |
1618 | status = viewer_status_to_live_iterator_status(viewer_status); |
1619 | goto end; | |
1620 | } | |
1621 | ||
1622 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1623 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1624 | viewer_handle_recv_status(logCfg, viewer_status, "get new streams reply"); |
4164020e SM |
1625 | status = viewer_status_to_live_iterator_status(viewer_status); |
1626 | goto end; | |
1627 | } | |
1628 | ||
1629 | streams_count = be32toh(rp.streams_count); | |
1630 | ||
1631 | switch (be32toh(rp.status)) { | |
1632 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1633 | session->new_streams_needed = false; | |
1634 | break; | |
1635 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1636 | session->new_streams_needed = false; | |
1637 | goto end; | |
1638 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1639 | session->new_streams_needed = false; | |
1640 | session->closed = true; | |
1641 | status = LTTNG_LIVE_ITERATOR_STATUS_END; | |
1642 | goto end; | |
1643 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
27a14e13 | 1644 | BT_CLOGD("Received get_new_streams response: error"); |
4164020e SM |
1645 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1646 | goto end; | |
1647 | default: | |
27a14e13 SM |
1648 | BT_CLOGE_APPEND_CAUSE("Received get_new_streams response: Unknown:" |
1649 | "return code %u", | |
1650 | be32toh(rp.status)); | |
4164020e SM |
1651 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1652 | goto end; | |
1653 | } | |
1654 | ||
1655 | viewer_status = receive_streams(session, streams_count, self_msg_iter); | |
1656 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
27a14e13 | 1657 | viewer_handle_recv_status(logCfg, viewer_status, "new streams"); |
4164020e SM |
1658 | status = viewer_status_to_live_iterator_status(viewer_status); |
1659 | goto end; | |
1660 | } | |
1661 | ||
1662 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; | |
f79c2d7a | 1663 | end: |
4164020e | 1664 | return status; |
7cdc2bab MD |
1665 | } |
1666 | ||
1667 | BT_HIDDEN | |
772808ca SM |
1668 | enum lttng_live_viewer_status |
1669 | live_viewer_connection_create(const char *url, bool in_query, | |
1670 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1671 | const bt2_common::LogCfg& logCfg, live_viewer_connection::UP& viewer) | |
7cdc2bab | 1672 | { |
4164020e SM |
1673 | enum lttng_live_viewer_status status; |
1674 | ||
772808ca SM |
1675 | live_viewer_connection::UP viewer_connection = |
1676 | bt2_common::makeUnique<live_viewer_connection>(logCfg); | |
4164020e | 1677 | |
27a14e13 SM |
1678 | if (bt_socket_init(logCfg.logLevel()) != 0) { |
1679 | BT_CLOGE_APPEND_CAUSE("Failed to init socket"); | |
772808ca | 1680 | return LTTNG_LIVE_VIEWER_STATUS_ERROR; |
4164020e SM |
1681 | } |
1682 | ||
4164020e SM |
1683 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
1684 | viewer_connection->port = -1; | |
1685 | viewer_connection->in_query = in_query; | |
1686 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
d6ed88fe | 1687 | viewer_connection->url = url; |
4164020e | 1688 | |
27a14e13 | 1689 | BT_CLOGD("Establishing connection to url \"%s\"...", url); |
772808ca | 1690 | status = lttng_live_connect_viewer(viewer_connection.get()); |
4164020e SM |
1691 | /* |
1692 | * Only print error and append cause in case of error. not in case of | |
1693 | * interruption. | |
1694 | */ | |
1695 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
27a14e13 SM |
1696 | BT_CLOGE_APPEND_CAUSE("Failed to establish connection: " |
1697 | "url=\"%s\"", | |
1698 | url); | |
772808ca | 1699 | return status; |
4164020e | 1700 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { |
772808ca | 1701 | return status; |
4164020e | 1702 | } |
27a14e13 | 1703 | BT_CLOGD("Connection to url \"%s\" is established", url); |
4164020e | 1704 | |
772808ca | 1705 | viewer = std::move(viewer_connection); |
4164020e | 1706 | status = LTTNG_LIVE_VIEWER_STATUS_OK; |
9b245540 | 1707 | |
4164020e | 1708 | return status; |
7cdc2bab MD |
1709 | } |
1710 | ||
9b245540 | 1711 | live_viewer_connection::~live_viewer_connection() |
7cdc2bab | 1712 | { |
27a14e13 SM |
1713 | BT_CLOGD("Closing connection to relay:" |
1714 | "relay-url=\"%s\"", | |
9b245540 | 1715 | this->url.c_str()); |
b9e6ec43 | 1716 | |
9b245540 | 1717 | lttng_live_disconnect_viewer(this); |
1cb3cdd7 | 1718 | |
4164020e | 1719 | bt_socket_fini(); |
7cdc2bab | 1720 | } |