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 | ||
c802cacb | 8 | #include <glib.h> |
7cdc2bab | 9 | #include <stdint.h> |
3c22a242 | 10 | #include <stdio.h> |
3c22a242 | 11 | |
c802cacb SM |
12 | #include <babeltrace2/babeltrace.h> |
13 | ||
578e048b | 14 | #include "common/common.h" |
83ad336c | 15 | #include "compat/endian.h" /* IWYU pragma: keep */ |
7cdc2bab | 16 | |
c802cacb | 17 | #include "data-stream.hpp" |
087cd0f5 | 18 | #include "lttng-live.hpp" |
087cd0f5 | 19 | #include "lttng-viewer-abi.hpp" |
087cd0f5 | 20 | #include "metadata.hpp" |
c802cacb | 21 | #include "viewer-connection.hpp" |
7cdc2bab | 22 | |
0f5c5d5c | 23 | #define viewer_handle_send_recv_status(_status, _action, _msg_str) \ |
4164020e SM |
24 | do { \ |
25 | switch (_status) { \ | |
26 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: \ | |
27 | break; \ | |
28 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: \ | |
0f5c5d5c SM |
29 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, \ |
30 | "Error " _action " " _msg_str); \ | |
4164020e SM |
31 | break; \ |
32 | default: \ | |
33 | bt_common_abort(); \ | |
34 | } \ | |
35 | } while (0) | |
36 | ||
0f5c5d5c SM |
37 | #define viewer_handle_send_status(_status, _msg_str) \ |
38 | viewer_handle_send_recv_status(_status, "sending", _msg_str) | |
4164020e | 39 | |
0f5c5d5c SM |
40 | #define viewer_handle_recv_status(_status, _msg_str) \ |
41 | viewer_handle_send_recv_status(_status, "receiving", _msg_str) | |
4164020e | 42 | |
0f5c5d5c | 43 | #define LTTNG_LIVE_CPPLOGE_APPEND_CAUSE_ERRNO(_msg, _fmt, ...) \ |
4164020e | 44 | do { \ |
0f5c5d5c SM |
45 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, _msg ": {}" _fmt, \ |
46 | bt_socket_errormsg(), ##__VA_ARGS__); \ | |
4164020e SM |
47 | } while (0) |
48 | ||
4164020e SM |
49 | static inline enum lttng_live_iterator_status |
50 | viewer_status_to_live_iterator_status(enum lttng_live_viewer_status viewer_status) | |
f79c2d7a | 51 | { |
4164020e SM |
52 | switch (viewer_status) { |
53 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
54 | return LTTNG_LIVE_ITERATOR_STATUS_OK; | |
55 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
56 | return LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
57 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
58 | return LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
59 | } | |
60 | ||
61 | bt_common_abort(); | |
f79c2d7a FD |
62 | } |
63 | ||
4164020e SM |
64 | static inline enum ctf_msg_iter_medium_status |
65 | viewer_status_to_ctf_msg_iter_medium_status(enum lttng_live_viewer_status viewer_status) | |
f79c2d7a | 66 | { |
4164020e SM |
67 | switch (viewer_status) { |
68 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
69 | return CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
70 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
71 | return CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
72 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
73 | return CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
74 | } | |
75 | ||
76 | bt_common_abort(); | |
f79c2d7a FD |
77 | } |
78 | ||
4164020e | 79 | static inline void viewer_connection_close_socket(struct live_viewer_connection *viewer_connection) |
b197ca37 | 80 | { |
4164020e SM |
81 | int ret = bt_socket_close(viewer_connection->control_sock); |
82 | if (ret == -1) { | |
0f5c5d5c SM |
83 | BT_CPPLOGW_ERRNO_SPEC(viewer_connection->logger, |
84 | "Error closing viewer connection socket: ", "."); | |
4164020e SM |
85 | } |
86 | ||
87 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
b197ca37 FD |
88 | } |
89 | ||
f79c2d7a FD |
90 | /* |
91 | * This function receives a message from the Relay daemon. | |
92 | * If it received the entire message, it returns _OK, | |
93 | * If it's interrupted, it returns _INTERRUPTED, | |
94 | * otherwise, it returns _ERROR. | |
95 | */ | |
4164020e SM |
96 | static enum lttng_live_viewer_status |
97 | lttng_live_recv(struct live_viewer_connection *viewer_connection, void *buf, size_t len) | |
7cdc2bab | 98 | { |
4164020e | 99 | ssize_t received; |
4164020e SM |
100 | size_t total_received = 0, to_receive = len; |
101 | struct lttng_live_msg_iter *lttng_live_msg_iter = viewer_connection->lttng_live_msg_iter; | |
102 | enum lttng_live_viewer_status status; | |
103 | BT_SOCKET sock = viewer_connection->control_sock; | |
104 | ||
105 | /* | |
106 | * Receive a message from the Relay. | |
107 | */ | |
108 | do { | |
109 | received = bt_socket_recv(sock, (char *) buf + total_received, to_receive, 0); | |
110 | if (received == BT_SOCKET_ERROR) { | |
111 | if (bt_socket_interrupted()) { | |
112 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
113 | /* | |
114 | * This interruption was due to a | |
115 | * SIGINT and the graph is being torn | |
116 | * down. | |
117 | */ | |
118 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
119 | lttng_live_msg_iter->was_interrupted = true; | |
120 | goto end; | |
121 | } else { | |
122 | /* | |
123 | * A signal was received, but the graph | |
124 | * is not being torn down. Carry on. | |
125 | */ | |
126 | continue; | |
127 | } | |
128 | } else { | |
129 | /* | |
130 | * For any other types of socket error, close | |
131 | * the socket and return an error. | |
132 | */ | |
0f5c5d5c | 133 | LTTNG_LIVE_CPPLOGE_APPEND_CAUSE_ERRNO("Error receiving from Relay", "."); |
4164020e SM |
134 | |
135 | viewer_connection_close_socket(viewer_connection); | |
136 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
137 | goto end; | |
138 | } | |
139 | } else if (received == 0) { | |
140 | /* | |
141 | * The recv() call returned 0. This means the | |
142 | * connection was orderly shutdown from the other peer. | |
143 | * If that happens when we are trying to receive | |
144 | * a message from it, it means something when wrong. | |
145 | * Close the socket and return an error. | |
146 | */ | |
0f5c5d5c SM |
147 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
148 | "Remote side has closed connection"); | |
4164020e SM |
149 | viewer_connection_close_socket(viewer_connection); |
150 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
151 | goto end; | |
152 | } | |
153 | ||
154 | BT_ASSERT(received <= to_receive); | |
155 | total_received += received; | |
156 | to_receive -= received; | |
157 | ||
158 | } while (to_receive > 0); | |
159 | ||
160 | BT_ASSERT(total_received == len); | |
161 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
f79c2d7a FD |
162 | |
163 | end: | |
4164020e | 164 | return status; |
7cdc2bab MD |
165 | } |
166 | ||
f79c2d7a FD |
167 | /* |
168 | * This function sends a message to the Relay daemon. | |
169 | * If it send the message, it returns _OK, | |
170 | * If it's interrupted, it returns _INTERRUPTED, | |
171 | * otherwise, it returns _ERROR. | |
172 | */ | |
4164020e SM |
173 | static enum lttng_live_viewer_status |
174 | lttng_live_send(struct live_viewer_connection *viewer_connection, const void *buf, size_t len) | |
7cdc2bab | 175 | { |
4164020e | 176 | enum lttng_live_viewer_status status; |
4164020e SM |
177 | struct lttng_live_msg_iter *lttng_live_msg_iter = viewer_connection->lttng_live_msg_iter; |
178 | BT_SOCKET sock = viewer_connection->control_sock; | |
179 | size_t to_send = len; | |
180 | ssize_t total_sent = 0; | |
181 | ||
182 | do { | |
183 | ssize_t sent = bt_socket_send_nosigpipe(sock, (char *) buf + total_sent, to_send); | |
184 | if (sent == BT_SOCKET_ERROR) { | |
185 | if (bt_socket_interrupted()) { | |
186 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { | |
187 | /* | |
188 | * This interruption was a SIGINT and | |
189 | * the graph is being teared down. | |
190 | */ | |
191 | status = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED; | |
192 | lttng_live_msg_iter->was_interrupted = true; | |
193 | goto end; | |
194 | } else { | |
195 | /* | |
196 | * A signal was received, but the graph | |
197 | * is not being teared down. Carry on. | |
198 | */ | |
199 | continue; | |
200 | } | |
201 | } else { | |
202 | /* | |
203 | * For any other types of socket error, close | |
204 | * the socket and return an error. | |
205 | */ | |
0f5c5d5c | 206 | LTTNG_LIVE_CPPLOGE_APPEND_CAUSE_ERRNO("Error sending to Relay", "."); |
4164020e SM |
207 | |
208 | viewer_connection_close_socket(viewer_connection); | |
209 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; | |
210 | goto end; | |
211 | } | |
212 | } | |
213 | ||
214 | BT_ASSERT(sent <= to_send); | |
215 | total_sent += sent; | |
216 | to_send -= sent; | |
217 | ||
218 | } while (to_send > 0); | |
219 | ||
220 | BT_ASSERT(total_sent == len); | |
221 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
f79c2d7a FD |
222 | |
223 | end: | |
4164020e | 224 | return status; |
7cdc2bab MD |
225 | } |
226 | ||
4164020e | 227 | static int parse_url(struct live_viewer_connection *viewer_connection) |
7cdc2bab | 228 | { |
4164020e | 229 | char error_buf[256] = {0}; |
dd420a9b | 230 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = {}; |
4164020e SM |
231 | int ret = -1; |
232 | const char *path = viewer_connection->url->str; | |
233 | ||
234 | if (!path) { | |
235 | goto end; | |
236 | } | |
237 | ||
238 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, error_buf, sizeof(error_buf)); | |
239 | if (!lttng_live_url_parts.proto) { | |
0f5c5d5c SM |
240 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Invalid LTTng live URL format: {}", |
241 | error_buf); | |
4164020e SM |
242 | goto end; |
243 | } | |
244 | viewer_connection->proto = lttng_live_url_parts.proto; | |
245 | lttng_live_url_parts.proto = NULL; | |
246 | ||
247 | viewer_connection->relay_hostname = lttng_live_url_parts.hostname; | |
248 | lttng_live_url_parts.hostname = NULL; | |
249 | ||
250 | if (lttng_live_url_parts.port >= 0) { | |
251 | viewer_connection->port = lttng_live_url_parts.port; | |
252 | } else { | |
253 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; | |
254 | } | |
255 | ||
256 | viewer_connection->target_hostname = lttng_live_url_parts.target_hostname; | |
257 | lttng_live_url_parts.target_hostname = NULL; | |
258 | ||
259 | if (lttng_live_url_parts.session_name) { | |
260 | viewer_connection->session_name = lttng_live_url_parts.session_name; | |
261 | lttng_live_url_parts.session_name = NULL; | |
262 | } | |
263 | ||
264 | ret = 0; | |
7cdc2bab MD |
265 | |
266 | end: | |
4164020e SM |
267 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
268 | return ret; | |
7cdc2bab MD |
269 | } |
270 | ||
4164020e SM |
271 | static enum lttng_live_viewer_status |
272 | lttng_live_handshake(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 273 | { |
4164020e SM |
274 | struct lttng_viewer_cmd cmd; |
275 | struct lttng_viewer_connect connect; | |
276 | enum lttng_live_viewer_status status; | |
4164020e SM |
277 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
278 | char cmd_buf[cmd_buf_len]; | |
279 | ||
0f5c5d5c SM |
280 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
281 | "Handshaking with the relay daemon: cmd={}, major-version={}, minor-version={}", | |
282 | LTTNG_VIEWER_CONNECT, LTTNG_LIVE_MAJOR, LTTNG_LIVE_MINOR); | |
4164020e SM |
283 | |
284 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
285 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
286 | cmd.cmd_version = htobe32(0); | |
287 | ||
288 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
289 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
290 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
291 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
292 | ||
293 | /* | |
294 | * Merge the cmd and connection request to prevent a write-write | |
295 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
296 | * second write to be performed quickly in presence of Nagle's algorithm | |
297 | */ | |
298 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
299 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
300 | ||
301 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
302 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 303 | viewer_handle_send_status(status, "viewer connect command"); |
4164020e SM |
304 | goto end; |
305 | } | |
306 | ||
307 | status = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); | |
308 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 309 | viewer_handle_recv_status(status, "viewer connect reply"); |
4164020e SM |
310 | goto end; |
311 | } | |
312 | ||
0f5c5d5c SM |
313 | BT_CPPLOGI_SPEC(viewer_connection->logger, "Received viewer session ID : {}", |
314 | (uint64_t) be64toh(connect.viewer_session_id)); | |
315 | BT_CPPLOGI_SPEC(viewer_connection->logger, "Relayd version : {}.{}", be32toh(connect.major), | |
316 | be32toh(connect.minor)); | |
4164020e SM |
317 | |
318 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
0f5c5d5c SM |
319 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
320 | "Incompatible lttng-relayd protocol"); | |
4164020e SM |
321 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
322 | goto end; | |
323 | } | |
324 | /* Use the smallest protocol version implemented. */ | |
325 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
326 | viewer_connection->minor = be32toh(connect.minor); | |
327 | } else { | |
328 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
329 | } | |
330 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
331 | ||
332 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
333 | ||
334 | goto end; | |
f79c2d7a FD |
335 | |
336 | end: | |
4164020e | 337 | return status; |
7cdc2bab MD |
338 | } |
339 | ||
4164020e SM |
340 | static enum lttng_live_viewer_status |
341 | lttng_live_connect_viewer(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 342 | { |
4164020e SM |
343 | struct hostent *host; |
344 | struct sockaddr_in server_addr; | |
345 | enum lttng_live_viewer_status status; | |
4164020e SM |
346 | |
347 | if (parse_url(viewer_connection)) { | |
0f5c5d5c | 348 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Failed to parse URL"); |
4164020e SM |
349 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
350 | goto error; | |
351 | } | |
352 | ||
0f5c5d5c SM |
353 | BT_CPPLOGD_SPEC( |
354 | viewer_connection->logger, | |
355 | "Connecting to hostname : {}, port : {}, target hostname : {}, session name : {}, proto : {}", | |
4164020e SM |
356 | viewer_connection->relay_hostname->str, viewer_connection->port, |
357 | !viewer_connection->target_hostname ? "<none>" : viewer_connection->target_hostname->str, | |
358 | !viewer_connection->session_name ? "<none>" : viewer_connection->session_name->str, | |
359 | viewer_connection->proto->str); | |
360 | ||
361 | host = gethostbyname(viewer_connection->relay_hostname->str); | |
362 | if (!host) { | |
0f5c5d5c SM |
363 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
364 | "Cannot lookup hostname: hostname=\"{}\"", | |
365 | viewer_connection->relay_hostname->str); | |
4164020e SM |
366 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
367 | goto error; | |
368 | } | |
369 | ||
370 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { | |
0f5c5d5c SM |
371 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Socket creation failed: {}", |
372 | bt_socket_errormsg()); | |
4164020e SM |
373 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
374 | goto error; | |
375 | } | |
376 | ||
377 | server_addr.sin_family = AF_INET; | |
378 | server_addr.sin_port = htons(viewer_connection->port); | |
379 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
380 | memset(&(server_addr.sin_zero), 0, 8); | |
381 | ||
382 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
383 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { | |
0f5c5d5c SM |
384 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Connection failed: {}", |
385 | bt_socket_errormsg()); | |
4164020e SM |
386 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
387 | goto error; | |
388 | } | |
389 | ||
390 | status = lttng_live_handshake(viewer_connection); | |
391 | ||
392 | /* | |
393 | * Only print error and append cause in case of error. not in case of | |
394 | * interruption. | |
395 | */ | |
396 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
0f5c5d5c | 397 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Viewer handshake failed"); |
4164020e SM |
398 | goto error; |
399 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
400 | goto end; | |
401 | } | |
402 | ||
403 | goto end; | |
7cdc2bab MD |
404 | |
405 | error: | |
4164020e SM |
406 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
407 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
0f5c5d5c SM |
408 | BT_CPPLOGW_SPEC(viewer_connection->logger, "Error closing socket: {}.", |
409 | bt_socket_errormsg()); | |
4164020e SM |
410 | } |
411 | } | |
412 | viewer_connection->control_sock = BT_INVALID_SOCKET; | |
f79c2d7a | 413 | end: |
4164020e | 414 | return status; |
7cdc2bab MD |
415 | } |
416 | ||
4164020e | 417 | static void lttng_live_disconnect_viewer(struct live_viewer_connection *viewer_connection) |
7cdc2bab | 418 | { |
4164020e SM |
419 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
420 | return; | |
421 | } | |
422 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
0f5c5d5c SM |
423 | BT_CPPLOGW_SPEC(viewer_connection->logger, "Error closing socket: {}", |
424 | bt_socket_errormsg()); | |
4164020e SM |
425 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
426 | } | |
7cdc2bab MD |
427 | } |
428 | ||
4164020e SM |
429 | static int list_update_session(bt_value *results, const struct lttng_viewer_session *session, |
430 | bool *_found, struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 431 | { |
4164020e SM |
432 | int ret = 0; |
433 | uint64_t i, len; | |
434 | bt_value *map = NULL; | |
435 | bt_value *hostname = NULL; | |
436 | bt_value *session_name = NULL; | |
437 | bt_value *btval = NULL; | |
438 | bool found = false; | |
439 | ||
440 | len = bt_value_array_get_length(results); | |
441 | for (i = 0; i < len; i++) { | |
442 | const char *hostname_str = NULL; | |
443 | const char *session_name_str = NULL; | |
444 | ||
445 | map = bt_value_array_borrow_element_by_index(results, i); | |
446 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); | |
447 | if (!hostname) { | |
0f5c5d5c SM |
448 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
449 | "Error borrowing \"target-hostname\" entry."); | |
4164020e SM |
450 | ret = -1; |
451 | goto end; | |
452 | } | |
453 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); | |
454 | if (!session_name) { | |
0f5c5d5c SM |
455 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
456 | "Error borrowing \"session-name\" entry."); | |
4164020e SM |
457 | ret = -1; |
458 | goto end; | |
459 | } | |
460 | hostname_str = bt_value_string_get(hostname); | |
461 | session_name_str = bt_value_string_get(session_name); | |
462 | ||
463 | if (strcmp(session->hostname, hostname_str) == 0 && | |
464 | strcmp(session->session_name, session_name_str) == 0) { | |
465 | int64_t val; | |
466 | uint32_t streams = be32toh(session->streams); | |
467 | uint32_t clients = be32toh(session->clients); | |
468 | ||
469 | found = true; | |
470 | ||
471 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); | |
472 | if (!btval) { | |
0f5c5d5c SM |
473 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
474 | "Error borrowing \"stream-count\" entry."); | |
4164020e SM |
475 | ret = -1; |
476 | goto end; | |
477 | } | |
478 | val = bt_value_integer_unsigned_get(btval); | |
479 | /* sum */ | |
480 | val += streams; | |
481 | bt_value_integer_unsigned_set(btval, val); | |
482 | ||
483 | btval = bt_value_map_borrow_entry_value(map, "client-count"); | |
484 | if (!btval) { | |
0f5c5d5c SM |
485 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
486 | "Error borrowing \"client-count\" entry."); | |
4164020e SM |
487 | ret = -1; |
488 | goto end; | |
489 | } | |
490 | val = bt_value_integer_unsigned_get(btval); | |
491 | /* max */ | |
492 | val = bt_max_t(int64_t, clients, val); | |
493 | bt_value_integer_unsigned_set(btval, val); | |
494 | } | |
495 | ||
496 | if (found) { | |
497 | break; | |
498 | } | |
499 | } | |
7cdc2bab | 500 | end: |
4164020e SM |
501 | *_found = found; |
502 | return ret; | |
7cdc2bab MD |
503 | } |
504 | ||
4164020e SM |
505 | static int list_append_session(bt_value *results, GString *base_url, |
506 | const struct lttng_viewer_session *session, | |
507 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 508 | { |
4164020e | 509 | int ret = 0; |
4164020e SM |
510 | bt_value_map_insert_entry_status insert_status; |
511 | bt_value_array_append_element_status append_status; | |
512 | bt_value *map = NULL; | |
513 | GString *url = NULL; | |
514 | bool found = false; | |
515 | ||
516 | /* | |
517 | * If the session already exists, add the stream count to it, | |
518 | * and do max of client counts. | |
519 | */ | |
520 | ret = list_update_session(results, session, &found, viewer_connection); | |
521 | if (ret || found) { | |
522 | goto end; | |
523 | } | |
524 | ||
525 | map = bt_value_map_create(); | |
526 | if (!map) { | |
0f5c5d5c | 527 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error creating map value."); |
4164020e SM |
528 | ret = -1; |
529 | goto end; | |
530 | } | |
531 | ||
532 | if (base_url->len < 1) { | |
0f5c5d5c SM |
533 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
534 | "Error: base_url length smaller than 1."); | |
4164020e SM |
535 | ret = -1; |
536 | goto end; | |
537 | } | |
538 | /* | |
539 | * key = "url", | |
540 | * value = <string>, | |
541 | */ | |
542 | url = g_string_new(base_url->str); | |
543 | g_string_append(url, "/host/"); | |
544 | g_string_append(url, session->hostname); | |
545 | g_string_append_c(url, '/'); | |
546 | g_string_append(url, session->session_name); | |
547 | ||
548 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); | |
549 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
0f5c5d5c | 550 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error inserting \"url\" entry."); |
4164020e SM |
551 | ret = -1; |
552 | goto end; | |
553 | } | |
554 | ||
555 | /* | |
556 | * key = "target-hostname", | |
557 | * value = <string>, | |
558 | */ | |
559 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", session->hostname); | |
560 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
0f5c5d5c SM |
561 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
562 | "Error inserting \"target-hostname\" entry."); | |
4164020e SM |
563 | ret = -1; |
564 | goto end; | |
565 | } | |
566 | ||
567 | /* | |
568 | * key = "session-name", | |
569 | * value = <string>, | |
570 | */ | |
571 | insert_status = bt_value_map_insert_string_entry(map, "session-name", session->session_name); | |
572 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
0f5c5d5c SM |
573 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
574 | "Error inserting \"session-name\" entry."); | |
4164020e SM |
575 | ret = -1; |
576 | goto end; | |
577 | } | |
578 | ||
579 | /* | |
580 | * key = "timer-us", | |
581 | * value = <integer>, | |
582 | */ | |
583 | { | |
584 | uint32_t live_timer = be32toh(session->live_timer); | |
585 | ||
586 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, "timer-us", live_timer); | |
587 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
0f5c5d5c SM |
588 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
589 | "Error inserting \"timer-us\" entry."); | |
4164020e SM |
590 | ret = -1; |
591 | goto end; | |
592 | } | |
593 | } | |
594 | ||
595 | /* | |
596 | * key = "stream-count", | |
597 | * value = <integer>, | |
598 | */ | |
599 | { | |
600 | uint32_t streams = be32toh(session->streams); | |
601 | ||
602 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, "stream-count", streams); | |
603 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
0f5c5d5c SM |
604 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
605 | "Error inserting \"stream-count\" entry."); | |
4164020e SM |
606 | ret = -1; |
607 | goto end; | |
608 | } | |
609 | } | |
610 | ||
611 | /* | |
612 | * key = "client-count", | |
613 | * value = <integer>, | |
614 | */ | |
615 | { | |
616 | uint32_t clients = be32toh(session->clients); | |
617 | ||
618 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, "client-count", clients); | |
619 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
0f5c5d5c SM |
620 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
621 | "Error inserting \"client-count\" entry."); | |
4164020e SM |
622 | ret = -1; |
623 | goto end; | |
624 | } | |
625 | } | |
626 | ||
627 | append_status = bt_value_array_append_element(results, map); | |
628 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
0f5c5d5c | 629 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error appending map to results."); |
4164020e SM |
630 | ret = -1; |
631 | } | |
14f28187 | 632 | |
7cdc2bab | 633 | end: |
4164020e SM |
634 | if (url) { |
635 | g_string_free(url, true); | |
636 | } | |
637 | BT_VALUE_PUT_REF_AND_RESET(map); | |
638 | return ret; | |
7cdc2bab MD |
639 | } |
640 | ||
641 | /* | |
642 | * Data structure returned: | |
643 | * | |
644 | * { | |
645 | * <array> = { | |
646 | * [n] = { | |
647 | * <map> = { | |
648 | * { | |
649 | * key = "url", | |
650 | * value = <string>, | |
651 | * }, | |
652 | * { | |
653 | * key = "target-hostname", | |
654 | * value = <string>, | |
655 | * }, | |
656 | * { | |
657 | * key = "session-name", | |
658 | * value = <string>, | |
659 | * }, | |
660 | * { | |
661 | * key = "timer-us", | |
662 | * value = <integer>, | |
663 | * }, | |
664 | * { | |
665 | * key = "stream-count", | |
666 | * value = <integer>, | |
667 | * }, | |
668 | * { | |
669 | * key = "client-count", | |
670 | * value = <integer>, | |
671 | * }, | |
672 | * }, | |
673 | * } | |
674 | * } | |
675 | */ | |
676 | ||
4164020e SM |
677 | bt_component_class_query_method_status |
678 | live_viewer_connection_list_sessions(struct live_viewer_connection *viewer_connection, | |
679 | const bt_value **user_result) | |
7cdc2bab | 680 | { |
4164020e SM |
681 | bt_component_class_query_method_status status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; |
682 | bt_value *result = NULL; | |
683 | enum lttng_live_viewer_status viewer_status; | |
684 | struct lttng_viewer_cmd cmd; | |
685 | struct lttng_viewer_list_sessions list; | |
686 | uint32_t i, sessions_count; | |
687 | ||
688 | result = bt_value_array_create(); | |
689 | if (!result) { | |
0f5c5d5c | 690 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error creating array"); |
4164020e SM |
691 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
692 | goto error; | |
693 | } | |
694 | ||
0f5c5d5c SM |
695 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Requesting list of sessions: cmd={}", |
696 | LTTNG_VIEWER_LIST_SESSIONS); | |
4164020e SM |
697 | |
698 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
699 | cmd.data_size = htobe64((uint64_t) 0); | |
700 | cmd.cmd_version = htobe32(0); | |
701 | ||
702 | viewer_status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); | |
703 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
0f5c5d5c SM |
704 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
705 | "Error sending list sessions command"); | |
4164020e SM |
706 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
707 | goto error; | |
708 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
709 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
710 | goto error; | |
711 | } | |
712 | ||
713 | viewer_status = lttng_live_recv(viewer_connection, &list, sizeof(list)); | |
714 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
0f5c5d5c | 715 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error receiving session list"); |
4164020e SM |
716 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
717 | goto error; | |
718 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
719 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
720 | goto error; | |
721 | } | |
722 | ||
723 | sessions_count = be32toh(list.sessions_count); | |
724 | for (i = 0; i < sessions_count; i++) { | |
725 | struct lttng_viewer_session lsession; | |
726 | ||
727 | viewer_status = lttng_live_recv(viewer_connection, &lsession, sizeof(lsession)); | |
728 | if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
0f5c5d5c | 729 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error receiving session:"); |
4164020e SM |
730 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
731 | goto error; | |
732 | } else if (viewer_status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
733 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN; | |
734 | goto error; | |
735 | } | |
736 | ||
737 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
738 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
739 | if (list_append_session(result, viewer_connection->url, &lsession, viewer_connection)) { | |
0f5c5d5c | 740 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error appending session"); |
4164020e SM |
741 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
742 | goto error; | |
743 | } | |
744 | } | |
745 | ||
746 | *user_result = result; | |
747 | goto end; | |
7cdc2bab | 748 | error: |
4164020e | 749 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 750 | end: |
4164020e | 751 | return status; |
7cdc2bab MD |
752 | } |
753 | ||
4164020e SM |
754 | static enum lttng_live_viewer_status |
755 | lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab | 756 | { |
4164020e SM |
757 | struct lttng_viewer_cmd cmd; |
758 | struct lttng_viewer_list_sessions list; | |
759 | struct lttng_viewer_session lsession; | |
760 | uint32_t i, sessions_count; | |
761 | uint64_t session_id; | |
762 | enum lttng_live_viewer_status status; | |
763 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e | 764 | |
0f5c5d5c SM |
765 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
766 | "Asking the relay daemon for the list of sessions: cmd={}", | |
767 | LTTNG_VIEWER_LIST_SESSIONS); | |
4164020e SM |
768 | |
769 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
770 | cmd.data_size = htobe64((uint64_t) 0); | |
771 | cmd.cmd_version = htobe32(0); | |
772 | ||
773 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); | |
774 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 775 | viewer_handle_send_status(status, "list sessions command"); |
4164020e SM |
776 | goto end; |
777 | } | |
778 | ||
779 | status = lttng_live_recv(viewer_connection, &list, sizeof(list)); | |
780 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 781 | viewer_handle_recv_status(status, "session list reply"); |
4164020e SM |
782 | goto end; |
783 | } | |
784 | ||
785 | sessions_count = be32toh(list.sessions_count); | |
786 | for (i = 0; i < sessions_count; i++) { | |
787 | status = lttng_live_recv(viewer_connection, &lsession, sizeof(lsession)); | |
788 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 789 | viewer_handle_recv_status(status, "session reply"); |
4164020e SM |
790 | goto end; |
791 | } | |
792 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
793 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
794 | session_id = be64toh(lsession.id); | |
795 | ||
0f5c5d5c SM |
796 | BT_CPPLOGI_SPEC(viewer_connection->logger, |
797 | "Adding session to internal list: " | |
798 | "session-id={}, hostname=\"{}\", session-name=\"{}\"", | |
799 | session_id, lsession.hostname, lsession.session_name); | |
4164020e SM |
800 | |
801 | if ((strncmp(lsession.session_name, viewer_connection->session_name->str, | |
802 | LTTNG_VIEWER_NAME_MAX) == 0) && | |
803 | (strncmp(lsession.hostname, viewer_connection->target_hostname->str, | |
804 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { | |
805 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, lsession.hostname, | |
806 | lsession.session_name)) { | |
0f5c5d5c SM |
807 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
808 | "Failed to add live session"); | |
4164020e SM |
809 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
810 | goto end; | |
811 | } | |
812 | } | |
813 | } | |
814 | ||
815 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
7cdc2bab | 816 | |
f79c2d7a | 817 | end: |
4164020e | 818 | return status; |
7cdc2bab MD |
819 | } |
820 | ||
4164020e SM |
821 | enum lttng_live_viewer_status |
822 | lttng_live_create_viewer_session(struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab | 823 | { |
4164020e SM |
824 | struct lttng_viewer_cmd cmd; |
825 | struct lttng_viewer_create_session_response resp; | |
826 | enum lttng_live_viewer_status status; | |
827 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e | 828 | |
0f5c5d5c SM |
829 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Creating a viewer session: cmd={}", |
830 | LTTNG_VIEWER_CREATE_SESSION); | |
4164020e SM |
831 | |
832 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
833 | cmd.data_size = htobe64((uint64_t) 0); | |
834 | cmd.cmd_version = htobe32(0); | |
835 | ||
836 | status = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); | |
837 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 838 | viewer_handle_send_status(status, "create session command"); |
4164020e SM |
839 | goto end; |
840 | } | |
841 | ||
842 | status = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); | |
843 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 844 | viewer_handle_recv_status(status, "create session reply"); |
4164020e SM |
845 | goto end; |
846 | } | |
847 | ||
848 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
0f5c5d5c | 849 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error creating viewer session"); |
4164020e SM |
850 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
851 | goto end; | |
852 | } | |
853 | ||
854 | status = lttng_live_query_session_ids(lttng_live_msg_iter); | |
855 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
0f5c5d5c SM |
856 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
857 | "Failed to query live viewer session ids"); | |
4164020e SM |
858 | goto end; |
859 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
860 | goto end; | |
861 | } | |
7cdc2bab | 862 | |
f79c2d7a | 863 | end: |
4164020e | 864 | return status; |
7cdc2bab MD |
865 | } |
866 | ||
4164020e SM |
867 | static enum lttng_live_viewer_status receive_streams(struct lttng_live_session *session, |
868 | uint32_t stream_count, | |
869 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 870 | { |
4164020e SM |
871 | uint32_t i; |
872 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
873 | enum lttng_live_viewer_status status; | |
874 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e | 875 | |
0f5c5d5c | 876 | BT_CPPLOGI_SPEC(viewer_connection->logger, "Getting {} new streams", stream_count); |
4164020e SM |
877 | for (i = 0; i < stream_count; i++) { |
878 | struct lttng_viewer_stream stream; | |
879 | struct lttng_live_stream_iterator *live_stream; | |
880 | uint64_t stream_id; | |
881 | uint64_t ctf_trace_id; | |
882 | ||
883 | status = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); | |
884 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 885 | viewer_handle_recv_status(status, "stream reply"); |
4164020e SM |
886 | goto end; |
887 | } | |
888 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
889 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
890 | stream_id = be64toh(stream.id); | |
891 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
892 | ||
893 | if (stream.metadata_flag) { | |
0f5c5d5c SM |
894 | BT_CPPLOGI_SPEC(viewer_connection->logger, " metadata stream {} : {}/{}", stream_id, |
895 | stream.path_name, stream.channel_name); | |
44bd6303 | 896 | if (lttng_live_metadata_create_stream(session, ctf_trace_id, stream_id)) { |
0f5c5d5c SM |
897 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
898 | "Error creating metadata stream"); | |
4164020e SM |
899 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
900 | goto end; | |
901 | } | |
902 | session->lazy_stream_msg_init = true; | |
903 | } else { | |
0f5c5d5c SM |
904 | BT_CPPLOGI_SPEC(viewer_connection->logger, " stream {} : {}/{}", stream_id, |
905 | stream.path_name, stream.channel_name); | |
4164020e SM |
906 | live_stream = |
907 | lttng_live_stream_iterator_create(session, ctf_trace_id, stream_id, self_msg_iter); | |
908 | if (!live_stream) { | |
0f5c5d5c | 909 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error creating stream"); |
4164020e SM |
910 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
911 | goto end; | |
912 | } | |
913 | } | |
914 | } | |
915 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
7cdc2bab | 916 | |
f79c2d7a | 917 | end: |
4164020e | 918 | return status; |
7cdc2bab MD |
919 | } |
920 | ||
4164020e SM |
921 | enum lttng_live_viewer_status lttng_live_session_attach(struct lttng_live_session *session, |
922 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 923 | { |
4164020e SM |
924 | struct lttng_viewer_cmd cmd; |
925 | enum lttng_live_viewer_status status; | |
926 | struct lttng_viewer_attach_session_request rq; | |
927 | struct lttng_viewer_attach_session_response rp; | |
928 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
929 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e SM |
930 | uint64_t session_id = session->id; |
931 | uint32_t streams_count; | |
932 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
933 | char cmd_buf[cmd_buf_len]; | |
934 | ||
0f5c5d5c SM |
935 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
936 | "Attaching to session: cmd={}, session-id={}, seek={}", | |
937 | LTTNG_VIEWER_ATTACH_SESSION, session_id, LTTNG_VIEWER_SEEK_LAST); | |
4164020e SM |
938 | |
939 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); | |
940 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
941 | cmd.cmd_version = htobe32(0); | |
942 | ||
943 | memset(&rq, 0, sizeof(rq)); | |
944 | rq.session_id = htobe64(session_id); | |
945 | // TODO: add cmd line parameter to select seek beginning | |
946 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
947 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
948 | ||
949 | /* | |
950 | * Merge the cmd and connection request to prevent a write-write | |
951 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
952 | * second write to be performed quickly in presence of Nagle's algorithm. | |
953 | */ | |
954 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
955 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
956 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
957 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 958 | viewer_handle_send_status(status, "attach session command"); |
4164020e SM |
959 | goto end; |
960 | } | |
961 | ||
962 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
963 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 964 | viewer_handle_recv_status(status, "attach session reply"); |
4164020e SM |
965 | goto end; |
966 | } | |
967 | ||
968 | streams_count = be32toh(rp.streams_count); | |
969 | switch (be32toh(rp.status)) { | |
970 | case LTTNG_VIEWER_ATTACH_OK: | |
971 | break; | |
972 | case LTTNG_VIEWER_ATTACH_UNK: | |
0f5c5d5c SM |
973 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Session id {} is unknown", |
974 | session_id); | |
4164020e SM |
975 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
976 | goto end; | |
977 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
0f5c5d5c SM |
978 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
979 | "There is already a viewer attached to this session"); | |
4164020e SM |
980 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
981 | goto end; | |
982 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
0f5c5d5c | 983 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Not a live session"); |
4164020e SM |
984 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
985 | goto end; | |
986 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
0f5c5d5c | 987 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Wrong seek parameter"); |
4164020e SM |
988 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
989 | goto end; | |
990 | default: | |
0f5c5d5c SM |
991 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Unknown attach return code {}", |
992 | be32toh(rp.status)); | |
4164020e SM |
993 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
994 | goto end; | |
995 | } | |
996 | ||
997 | /* We receive the initial list of streams. */ | |
998 | status = receive_streams(session, streams_count, self_msg_iter); | |
999 | switch (status) { | |
1000 | case LTTNG_LIVE_VIEWER_STATUS_OK: | |
1001 | break; | |
1002 | case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: | |
1003 | goto end; | |
1004 | case LTTNG_LIVE_VIEWER_STATUS_ERROR: | |
0f5c5d5c | 1005 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Error receiving streams"); |
4164020e SM |
1006 | goto end; |
1007 | default: | |
1008 | bt_common_abort(); | |
1009 | } | |
1010 | ||
1011 | session->attached = true; | |
1012 | session->new_streams_needed = false; | |
7cdc2bab | 1013 | |
eee8e741 | 1014 | end: |
4164020e | 1015 | return status; |
7cdc2bab MD |
1016 | } |
1017 | ||
4164020e | 1018 | enum lttng_live_viewer_status lttng_live_session_detach(struct lttng_live_session *session) |
7cdc2bab | 1019 | { |
4164020e SM |
1020 | struct lttng_viewer_cmd cmd; |
1021 | enum lttng_live_viewer_status status; | |
1022 | struct lttng_viewer_detach_session_request rq; | |
1023 | struct lttng_viewer_detach_session_response rp; | |
1024 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
4164020e SM |
1025 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; |
1026 | uint64_t session_id = session->id; | |
1027 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1028 | char cmd_buf[cmd_buf_len]; | |
1029 | ||
1030 | /* | |
1031 | * The session might already be detached and the viewer socket might | |
1032 | * already been closed. This happens when calling this function when | |
1033 | * tearing down the graph after an error. | |
1034 | */ | |
1035 | if (!session->attached || viewer_connection->control_sock == BT_INVALID_SOCKET) { | |
1036 | return LTTNG_LIVE_VIEWER_STATUS_OK; | |
1037 | } | |
1038 | ||
0f5c5d5c SM |
1039 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Detaching from session: cmd={}, session-id={}", |
1040 | LTTNG_VIEWER_DETACH_SESSION, session_id); | |
4164020e SM |
1041 | |
1042 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
1043 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1044 | cmd.cmd_version = htobe32(0); | |
1045 | ||
1046 | memset(&rq, 0, sizeof(rq)); | |
1047 | rq.session_id = htobe64(session_id); | |
1048 | ||
1049 | /* | |
1050 | * Merge the cmd and connection request to prevent a write-write | |
1051 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1052 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1053 | */ | |
1054 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1055 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1056 | status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1057 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1058 | viewer_handle_send_status(status, "detach session command"); |
4164020e SM |
1059 | goto end; |
1060 | } | |
1061 | ||
1062 | status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1063 | if (status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1064 | viewer_handle_recv_status(status, "detach session reply"); |
4164020e SM |
1065 | goto end; |
1066 | } | |
1067 | ||
1068 | switch (be32toh(rp.status)) { | |
1069 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
1070 | break; | |
1071 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
0f5c5d5c | 1072 | BT_CPPLOGW_SPEC(viewer_connection->logger, "Session id {} is unknown", session_id); |
4164020e SM |
1073 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1074 | goto end; | |
1075 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
0f5c5d5c | 1076 | BT_CPPLOGW_SPEC(viewer_connection->logger, "Error detaching session id {}", session_id); |
4164020e SM |
1077 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1078 | goto end; | |
1079 | default: | |
0f5c5d5c SM |
1080 | BT_CPPLOGE_SPEC(viewer_connection->logger, "Unknown detach return code {}", |
1081 | be32toh(rp.status)); | |
4164020e SM |
1082 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1083 | goto end; | |
1084 | } | |
1085 | ||
1086 | session->attached = false; | |
1087 | ||
1088 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
7cdc2bab | 1089 | |
f79c2d7a | 1090 | end: |
4164020e | 1091 | return status; |
7cdc2bab MD |
1092 | } |
1093 | ||
4164020e SM |
1094 | enum lttng_live_get_one_metadata_status |
1095 | lttng_live_get_one_metadata_packet(struct lttng_live_trace *trace, FILE *fp, size_t *reply_len) | |
7cdc2bab | 1096 | { |
4164020e SM |
1097 | uint64_t len = 0; |
1098 | enum lttng_live_get_one_metadata_status status; | |
1099 | enum lttng_live_viewer_status viewer_status; | |
1100 | struct lttng_viewer_cmd cmd; | |
1101 | struct lttng_viewer_get_metadata rq; | |
1102 | struct lttng_viewer_metadata_packet rp; | |
1103 | gchar *data = NULL; | |
1104 | ssize_t writelen; | |
1105 | struct lttng_live_session *session = trace->session; | |
1106 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
1107 | struct lttng_live_metadata *metadata = trace->metadata; | |
1108 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e SM |
1109 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1110 | char cmd_buf[cmd_buf_len]; | |
1111 | ||
0f5c5d5c SM |
1112 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1113 | "Requesting new metadata for trace:" | |
1114 | "cmd={}, trace-id={}, metadata-stream-id={}", | |
1115 | LTTNG_VIEWER_GET_METADATA, trace->id, metadata->stream_id); | |
4164020e SM |
1116 | |
1117 | rq.stream_id = htobe64(metadata->stream_id); | |
1118 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1119 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1120 | cmd.cmd_version = htobe32(0); | |
1121 | ||
1122 | /* | |
1123 | * Merge the cmd and connection request to prevent a write-write | |
1124 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1125 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1126 | */ | |
1127 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1128 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1129 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1130 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1131 | viewer_handle_send_status(viewer_status, "get metadata command"); |
4164020e SM |
1132 | status = (enum lttng_live_get_one_metadata_status) viewer_status; |
1133 | goto end; | |
1134 | } | |
1135 | ||
1136 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1137 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1138 | viewer_handle_recv_status(viewer_status, "get metadata reply"); |
4164020e SM |
1139 | status = (enum lttng_live_get_one_metadata_status) viewer_status; |
1140 | goto end; | |
1141 | } | |
1142 | ||
1143 | switch (be32toh(rp.status)) { | |
1144 | case LTTNG_VIEWER_METADATA_OK: | |
0f5c5d5c | 1145 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Received get_metadata response: ok"); |
4164020e SM |
1146 | break; |
1147 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
0f5c5d5c | 1148 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Received get_metadata response: no new"); |
4164020e SM |
1149 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END; |
1150 | goto end; | |
1151 | case LTTNG_VIEWER_METADATA_ERR: | |
1152 | /* | |
1153 | * The Relayd cannot find this stream id. Maybe its | |
1154 | * gone already. This can happen in short lived UST app | |
1155 | * in a per-pid session. | |
1156 | */ | |
0f5c5d5c | 1157 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Received get_metadata response: error"); |
4164020e SM |
1158 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED; |
1159 | goto end; | |
1160 | default: | |
0f5c5d5c SM |
1161 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
1162 | "Received get_metadata response: unknown"); | |
4164020e SM |
1163 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1164 | goto end; | |
1165 | } | |
1166 | ||
1167 | len = be64toh(rp.len); | |
c5ce3927 FD |
1168 | if (len == 0) { |
1169 | /* | |
1170 | * We received a `LTTNG_VIEWER_METADATA_OK` with a packet | |
1171 | * length of 0. This means we must try again. This scenario | |
1172 | * arises when a clear command is performed on an lttng session. | |
1173 | */ | |
0f5c5d5c SM |
1174 | BT_CPPLOGD_SPEC( |
1175 | viewer_connection->logger, | |
c5ce3927 FD |
1176 | "Expecting a metadata packet of size 0. Retry to get a packet from the relay."); |
1177 | goto empty_metadata_packet_retry; | |
1178 | } | |
1179 | ||
0f5c5d5c | 1180 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Writing {} bytes to metadata", len); |
4164020e | 1181 | if (len <= 0) { |
0f5c5d5c | 1182 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Erroneous response length"); |
4164020e SM |
1183 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1184 | goto end; | |
1185 | } | |
1186 | ||
1187 | data = g_new0(gchar, len); | |
1188 | if (!data) { | |
0f5c5d5c SM |
1189 | BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(viewer_connection->logger, |
1190 | "Failed to allocate data buffer", "."); | |
4164020e SM |
1191 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1192 | goto end; | |
1193 | } | |
1194 | ||
1195 | viewer_status = lttng_live_recv(viewer_connection, data, len); | |
1196 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1197 | viewer_handle_recv_status(viewer_status, "get metadata packet"); |
4164020e SM |
1198 | status = (enum lttng_live_get_one_metadata_status) viewer_status; |
1199 | goto end; | |
1200 | } | |
1201 | ||
1202 | /* | |
1203 | * Write the metadata to the file handle. | |
1204 | */ | |
1205 | writelen = fwrite(data, sizeof(uint8_t), len, fp); | |
1206 | if (writelen != len) { | |
0f5c5d5c SM |
1207 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
1208 | "Writing in the metadata file stream"); | |
4164020e SM |
1209 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1210 | goto end; | |
1211 | } | |
1212 | ||
c5ce3927 | 1213 | empty_metadata_packet_retry: |
4164020e SM |
1214 | *reply_len = len; |
1215 | status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK; | |
c28512ab | 1216 | |
c28512ab | 1217 | end: |
4164020e SM |
1218 | g_free(data); |
1219 | return status; | |
7cdc2bab MD |
1220 | } |
1221 | ||
1222 | /* | |
1223 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1224 | */ | |
4164020e SM |
1225 | static void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, |
1226 | struct packet_index *pindex) | |
7cdc2bab | 1227 | { |
4164020e SM |
1228 | BT_ASSERT(lindex); |
1229 | BT_ASSERT(pindex); | |
1230 | ||
1231 | pindex->offset = be64toh(lindex->offset); | |
1232 | pindex->packet_size = be64toh(lindex->packet_size); | |
1233 | pindex->content_size = be64toh(lindex->content_size); | |
1234 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1235 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1236 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
7cdc2bab MD |
1237 | } |
1238 | ||
4164020e | 1239 | static void lttng_live_need_new_streams(struct lttng_live_msg_iter *lttng_live_msg_iter) |
36e94ad6 | 1240 | { |
4164020e | 1241 | uint64_t session_idx; |
4164020e SM |
1242 | |
1243 | for (session_idx = 0; session_idx < lttng_live_msg_iter->sessions->len; session_idx++) { | |
1244 | struct lttng_live_session *session = | |
1245 | (lttng_live_session *) g_ptr_array_index(lttng_live_msg_iter->sessions, session_idx); | |
0f5c5d5c SM |
1246 | BT_CPPLOGD_SPEC(lttng_live_msg_iter->logger, |
1247 | "Marking session as needing new streams: " | |
1248 | "session-id={}", | |
1249 | session->id); | |
4164020e SM |
1250 | session->new_streams_needed = true; |
1251 | } | |
36e94ad6 FD |
1252 | } |
1253 | ||
4164020e SM |
1254 | enum lttng_live_iterator_status |
1255 | lttng_live_get_next_index(struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1256 | struct lttng_live_stream_iterator *stream, struct packet_index *index) | |
7cdc2bab | 1257 | { |
4164020e SM |
1258 | struct lttng_viewer_cmd cmd; |
1259 | struct lttng_viewer_get_next_index rq; | |
1260 | enum lttng_live_viewer_status viewer_status; | |
1261 | struct lttng_viewer_index rp; | |
1262 | enum lttng_live_iterator_status status; | |
1263 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e SM |
1264 | struct lttng_live_trace *trace = stream->trace; |
1265 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1266 | char cmd_buf[cmd_buf_len]; | |
1267 | uint32_t flags, rp_status; | |
1268 | ||
0f5c5d5c SM |
1269 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1270 | "Requesting next index for stream: cmd={}, " | |
1271 | "viewer-stream-id={}", | |
1272 | LTTNG_VIEWER_GET_NEXT_INDEX, stream->viewer_stream_id); | |
4164020e SM |
1273 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); |
1274 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1275 | cmd.cmd_version = htobe32(0); | |
1276 | ||
1277 | memset(&rq, 0, sizeof(rq)); | |
1278 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1279 | ||
1280 | /* | |
1281 | * Merge the cmd and connection request to prevent a write-write | |
1282 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1283 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1284 | */ | |
1285 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1286 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1287 | ||
1288 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1289 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1290 | viewer_handle_send_status(viewer_status, "get next index command"); |
4164020e SM |
1291 | goto error; |
1292 | } | |
1293 | ||
1294 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1295 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1296 | viewer_handle_recv_status(viewer_status, "get next index reply"); |
4164020e SM |
1297 | goto error; |
1298 | } | |
1299 | ||
1300 | flags = be32toh(rp.flags); | |
1301 | rp_status = be32toh(rp.status); | |
1302 | ||
0f5c5d5c SM |
1303 | BT_CPPLOGD_SPEC( |
1304 | viewer_connection->logger, "Received response from relay daemon: cmd=%s, response={}", | |
1305 | LTTNG_VIEWER_GET_NEXT_INDEX, static_cast<lttng_viewer_next_index_return_code>(rp_status)); | |
ca622546 JG |
1306 | |
1307 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
0f5c5d5c SM |
1308 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1309 | "Marking all sessions as possibly needing new streams: " | |
1310 | "response={}, response-flag=NEW_STREAM", | |
1311 | static_cast<lttng_viewer_next_index_return_code>(rp_status)); | |
ca622546 JG |
1312 | lttng_live_need_new_streams(lttng_live_msg_iter); |
1313 | } | |
1314 | ||
4164020e SM |
1315 | switch (rp_status) { |
1316 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1317 | { | |
1318 | uint64_t ctf_stream_class_id; | |
1319 | ||
1320 | memset(index, 0, sizeof(struct packet_index)); | |
1321 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
1322 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; | |
1323 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1324 | if (stream->ctf_stream_class_id.is_set) { | |
1325 | BT_ASSERT(stream->ctf_stream_class_id.value == ctf_stream_class_id); | |
1326 | } else { | |
1327 | stream->ctf_stream_class_id.value = ctf_stream_class_id; | |
1328 | stream->ctf_stream_class_id.is_set = true; | |
1329 | } | |
1330 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_QUIESCENT); | |
1331 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1332 | break; | |
1333 | } | |
1334 | case LTTNG_VIEWER_INDEX_OK: | |
1335 | { | |
1336 | uint64_t ctf_stream_class_id; | |
1337 | ||
1338 | lttng_index_to_packet_index(&rp, index); | |
1339 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1340 | if (stream->ctf_stream_class_id.is_set) { | |
1341 | BT_ASSERT(stream->ctf_stream_class_id.value == ctf_stream_class_id); | |
1342 | } else { | |
1343 | stream->ctf_stream_class_id.value = ctf_stream_class_id; | |
1344 | stream->ctf_stream_class_id.is_set = true; | |
1345 | } | |
4164020e SM |
1346 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_DATA); |
1347 | ||
1348 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
0f5c5d5c SM |
1349 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1350 | "Marking trace as needing new metadata: " | |
1351 | "response={}, response-flag=NEW_METADATA, trace-id={}", | |
1352 | static_cast<lttng_viewer_next_index_return_code>(rp_status), trace->id); | |
4164020e SM |
1353 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
1354 | } | |
4164020e SM |
1355 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1356 | break; | |
1357 | } | |
1358 | case LTTNG_VIEWER_INDEX_RETRY: | |
1359 | memset(index, 0, sizeof(struct packet_index)); | |
1360 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA); | |
1361 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; | |
1362 | goto end; | |
1363 | case LTTNG_VIEWER_INDEX_HUP: | |
1364 | memset(index, 0, sizeof(struct packet_index)); | |
1365 | index->offset = EOF; | |
1366 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_EOF); | |
1367 | stream->has_stream_hung_up = true; | |
1368 | status = LTTNG_LIVE_ITERATOR_STATUS_END; | |
1369 | break; | |
1370 | case LTTNG_VIEWER_INDEX_ERR: | |
1371 | memset(index, 0, sizeof(struct packet_index)); | |
1372 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA); | |
1373 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1374 | goto end; | |
1375 | default: | |
0f5c5d5c SM |
1376 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1377 | "Received get_next_index response: unknown value"); | |
4164020e SM |
1378 | memset(index, 0, sizeof(struct packet_index)); |
1379 | lttng_live_stream_iterator_set_state(stream, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA); | |
1380 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; | |
1381 | goto end; | |
1382 | } | |
ca622546 | 1383 | |
4164020e | 1384 | goto end; |
7cdc2bab MD |
1385 | |
1386 | error: | |
4164020e | 1387 | status = viewer_status_to_live_iterator_status(viewer_status); |
f79c2d7a | 1388 | end: |
4164020e | 1389 | return status; |
7cdc2bab MD |
1390 | } |
1391 | ||
4164020e SM |
1392 | enum ctf_msg_iter_medium_status |
1393 | lttng_live_get_stream_bytes(struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1394 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1395 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1396 | { |
4164020e SM |
1397 | enum ctf_msg_iter_medium_status status; |
1398 | enum lttng_live_viewer_status viewer_status; | |
1399 | struct lttng_viewer_trace_packet rp; | |
1400 | struct lttng_viewer_cmd cmd; | |
1401 | struct lttng_viewer_get_packet rq; | |
1402 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e SM |
1403 | struct lttng_live_trace *trace = stream->trace; |
1404 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1405 | char cmd_buf[cmd_buf_len]; | |
1406 | uint32_t flags, rp_status; | |
1407 | ||
0f5c5d5c SM |
1408 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1409 | "Requesting data from stream: cmd={}, " | |
1410 | "offset={}, request-len={}", | |
1411 | LTTNG_VIEWER_GET_PACKET, offset, req_len); | |
4164020e SM |
1412 | |
1413 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1414 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1415 | cmd.cmd_version = htobe32(0); | |
1416 | ||
1417 | memset(&rq, 0, sizeof(rq)); | |
1418 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1419 | rq.offset = htobe64(offset); | |
1420 | rq.len = htobe32(req_len); | |
1421 | ||
1422 | /* | |
1423 | * Merge the cmd and connection request to prevent a write-write | |
1424 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1425 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1426 | */ | |
1427 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1428 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1429 | ||
1430 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1431 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1432 | viewer_handle_send_status(viewer_status, "get data packet command"); |
4164020e SM |
1433 | goto error_convert_status; |
1434 | } | |
1435 | ||
1436 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1437 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1438 | viewer_handle_recv_status(viewer_status, "get data packet reply"); |
4164020e SM |
1439 | goto error_convert_status; |
1440 | } | |
1441 | ||
1442 | flags = be32toh(rp.flags); | |
1443 | rp_status = be32toh(rp.status); | |
1444 | ||
0f5c5d5c SM |
1445 | BT_CPPLOGD_SPEC( |
1446 | viewer_connection->logger, "Received response from relay daemon: cmd={}, response={}", | |
1447 | LTTNG_VIEWER_GET_PACKET, static_cast<lttng_viewer_get_packet_return_code>(rp_status)); | |
4164020e SM |
1448 | switch (rp_status) { |
1449 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1450 | req_len = be32toh(rp.len); | |
0f5c5d5c SM |
1451 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1452 | "Got packet from relay daemon: response={}, packet-len={}", | |
1453 | static_cast<lttng_viewer_get_packet_return_code>(rp_status), req_len); | |
4164020e SM |
1454 | break; |
1455 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1456 | /* Unimplemented by relay daemon */ | |
1457 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
1458 | goto end; | |
1459 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1460 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
0f5c5d5c SM |
1461 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1462 | "Marking trace as needing new metadata: " | |
1463 | "response={}, response-flag=NEW_METADATA, trace-id={}", | |
1464 | static_cast<lttng_viewer_get_packet_return_code>(rp_status), trace->id); | |
4164020e SM |
1465 | trace->metadata_stream_state = LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED; |
1466 | } | |
1467 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
0f5c5d5c SM |
1468 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1469 | "Marking all sessions as possibly needing new streams: " | |
1470 | "response={}, response-flag=NEW_STREAM", | |
1471 | static_cast<lttng_viewer_get_packet_return_code>(rp_status)); | |
4164020e SM |
1472 | lttng_live_need_new_streams(lttng_live_msg_iter); |
1473 | } | |
1474 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
1475 | status = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; | |
0f5c5d5c SM |
1476 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1477 | "Reply with any one flags set means we should retry: response={}", | |
1478 | static_cast<lttng_viewer_get_packet_return_code>(rp_status)); | |
4164020e SM |
1479 | goto end; |
1480 | } | |
0f5c5d5c SM |
1481 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
1482 | "Received get_data_packet response: error"); | |
4164020e SM |
1483 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
1484 | goto end; | |
1485 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
1486 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; | |
1487 | goto end; | |
1488 | default: | |
0f5c5d5c SM |
1489 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
1490 | "Received get_data_packet response: unknown ({})", rp_status); | |
4164020e SM |
1491 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
1492 | goto end; | |
1493 | } | |
1494 | ||
1495 | if (req_len == 0) { | |
1496 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
1497 | goto end; | |
1498 | } | |
1499 | ||
1500 | viewer_status = lttng_live_recv(viewer_connection, buf, req_len); | |
1501 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1502 | viewer_handle_recv_status(viewer_status, "get data packet"); |
4164020e SM |
1503 | goto error_convert_status; |
1504 | } | |
1505 | *recv_len = req_len; | |
1506 | ||
1507 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
1508 | goto end; | |
f79c2d7a | 1509 | |
535fb48a | 1510 | error_convert_status: |
4164020e | 1511 | status = viewer_status_to_ctf_msg_iter_medium_status(viewer_status); |
f79c2d7a | 1512 | end: |
4164020e | 1513 | return status; |
7cdc2bab MD |
1514 | } |
1515 | ||
1516 | /* | |
1517 | * Request new streams for a session. | |
1518 | */ | |
4164020e SM |
1519 | enum lttng_live_iterator_status |
1520 | lttng_live_session_get_new_streams(struct lttng_live_session *session, | |
1521 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1522 | { |
4164020e SM |
1523 | enum lttng_live_iterator_status status = LTTNG_LIVE_ITERATOR_STATUS_OK; |
1524 | struct lttng_viewer_cmd cmd; | |
1525 | struct lttng_viewer_new_streams_request rq; | |
1526 | struct lttng_viewer_new_streams_response rp; | |
1527 | struct lttng_live_msg_iter *lttng_live_msg_iter = session->lttng_live_msg_iter; | |
1528 | enum lttng_live_viewer_status viewer_status; | |
1529 | struct live_viewer_connection *viewer_connection = lttng_live_msg_iter->viewer_connection; | |
4164020e SM |
1530 | uint32_t streams_count; |
1531 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); | |
1532 | char cmd_buf[cmd_buf_len]; | |
1533 | ||
1534 | if (!session->new_streams_needed) { | |
1535 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; | |
1536 | goto end; | |
1537 | } | |
1538 | ||
0f5c5d5c SM |
1539 | BT_CPPLOGD_SPEC(viewer_connection->logger, |
1540 | "Requesting new streams for session: cmd={}, session-id={}", | |
1541 | LTTNG_VIEWER_GET_NEW_STREAMS, session->id); | |
4164020e SM |
1542 | |
1543 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1544 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1545 | cmd.cmd_version = htobe32(0); | |
1546 | ||
1547 | memset(&rq, 0, sizeof(rq)); | |
1548 | rq.session_id = htobe64(session->id); | |
1549 | ||
1550 | /* | |
1551 | * Merge the cmd and connection request to prevent a write-write | |
1552 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1553 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1554 | */ | |
1555 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1556 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
1557 | ||
1558 | viewer_status = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); | |
1559 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1560 | viewer_handle_send_status(viewer_status, "get new streams command"); |
4164020e SM |
1561 | status = viewer_status_to_live_iterator_status(viewer_status); |
1562 | goto end; | |
1563 | } | |
1564 | ||
1565 | viewer_status = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); | |
1566 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1567 | viewer_handle_recv_status(viewer_status, "get new streams reply"); |
4164020e SM |
1568 | status = viewer_status_to_live_iterator_status(viewer_status); |
1569 | goto end; | |
1570 | } | |
1571 | ||
1572 | streams_count = be32toh(rp.streams_count); | |
1573 | ||
1574 | switch (be32toh(rp.status)) { | |
1575 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1576 | session->new_streams_needed = false; | |
1577 | break; | |
1578 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1579 | session->new_streams_needed = false; | |
1580 | goto end; | |
1581 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1582 | session->new_streams_needed = false; | |
1583 | session->closed = true; | |
1584 | status = LTTNG_LIVE_ITERATOR_STATUS_END; | |
1585 | goto end; | |
1586 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
0f5c5d5c | 1587 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Received get_new_streams response: error"); |
4164020e SM |
1588 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1589 | goto end; | |
1590 | default: | |
0f5c5d5c SM |
1591 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
1592 | "Received get_new_streams response: Unknown:" | |
1593 | "return code {}", | |
1594 | be32toh(rp.status)); | |
4164020e SM |
1595 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1596 | goto end; | |
1597 | } | |
1598 | ||
1599 | viewer_status = receive_streams(session, streams_count, self_msg_iter); | |
1600 | if (viewer_status != LTTNG_LIVE_VIEWER_STATUS_OK) { | |
0f5c5d5c | 1601 | viewer_handle_recv_status(viewer_status, "new streams"); |
4164020e SM |
1602 | status = viewer_status_to_live_iterator_status(viewer_status); |
1603 | goto end; | |
1604 | } | |
1605 | ||
1606 | status = LTTNG_LIVE_ITERATOR_STATUS_OK; | |
f79c2d7a | 1607 | end: |
4164020e | 1608 | return status; |
7cdc2bab MD |
1609 | } |
1610 | ||
f79c2d7a | 1611 | enum lttng_live_viewer_status live_viewer_connection_create( |
0f5c5d5c SM |
1612 | const char *url, bool in_query, struct lttng_live_msg_iter *lttng_live_msg_iter, |
1613 | const bt2c::Logger& parentLogger, struct live_viewer_connection **viewer) | |
7cdc2bab | 1614 | { |
4164020e SM |
1615 | enum lttng_live_viewer_status status; |
1616 | ||
0f5c5d5c | 1617 | live_viewer_connection *viewer_connection = new live_viewer_connection {parentLogger}; |
4164020e | 1618 | |
0f5c5d5c SM |
1619 | if (bt_socket_init(viewer_connection->logger) != 0) { |
1620 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Failed to init socket"); | |
4164020e SM |
1621 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1622 | goto error; | |
1623 | } | |
1624 | ||
4164020e SM |
1625 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
1626 | viewer_connection->port = -1; | |
1627 | viewer_connection->in_query = in_query; | |
1628 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
1629 | viewer_connection->url = g_string_new(url); | |
1630 | if (!viewer_connection->url) { | |
0f5c5d5c | 1631 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, "Failed to allocate URL buffer"); |
4164020e SM |
1632 | status = LTTNG_LIVE_VIEWER_STATUS_ERROR; |
1633 | goto error; | |
1634 | } | |
1635 | ||
0f5c5d5c | 1636 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Establishing connection to url \"{}\"...", url); |
4164020e SM |
1637 | status = lttng_live_connect_viewer(viewer_connection); |
1638 | /* | |
1639 | * Only print error and append cause in case of error. not in case of | |
1640 | * interruption. | |
1641 | */ | |
1642 | if (status == LTTNG_LIVE_VIEWER_STATUS_ERROR) { | |
0f5c5d5c SM |
1643 | BT_CPPLOGE_APPEND_CAUSE_SPEC(viewer_connection->logger, |
1644 | "Failed to establish connection: " | |
1645 | "url=\"{}\"", | |
1646 | url); | |
4164020e SM |
1647 | goto error; |
1648 | } else if (status == LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED) { | |
1649 | goto error; | |
1650 | } | |
0f5c5d5c | 1651 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Connection to url \"{}\" is established", url); |
4164020e SM |
1652 | |
1653 | *viewer = viewer_connection; | |
1654 | status = LTTNG_LIVE_VIEWER_STATUS_OK; | |
1655 | goto end; | |
7cdc2bab | 1656 | |
7cdc2bab | 1657 | error: |
4164020e SM |
1658 | if (viewer_connection) { |
1659 | live_viewer_connection_destroy(viewer_connection); | |
1660 | } | |
f79c2d7a | 1661 | end: |
4164020e | 1662 | return status; |
7cdc2bab MD |
1663 | } |
1664 | ||
4164020e | 1665 | void live_viewer_connection_destroy(struct live_viewer_connection *viewer_connection) |
7cdc2bab | 1666 | { |
4164020e SM |
1667 | if (!viewer_connection) { |
1668 | goto end; | |
1669 | } | |
b9e6ec43 | 1670 | |
0f5c5d5c SM |
1671 | BT_CPPLOGD_SPEC(viewer_connection->logger, "Closing connection to relay: relay-url=\"{}\"", |
1672 | viewer_connection->url->str); | |
ecb4ba8a | 1673 | |
4164020e | 1674 | lttng_live_disconnect_viewer(viewer_connection); |
b9e6ec43 | 1675 | |
4164020e SM |
1676 | if (viewer_connection->url) { |
1677 | g_string_free(viewer_connection->url, true); | |
1678 | } | |
b9e6ec43 | 1679 | |
4164020e SM |
1680 | if (viewer_connection->relay_hostname) { |
1681 | g_string_free(viewer_connection->relay_hostname, true); | |
1682 | } | |
b9e6ec43 | 1683 | |
4164020e SM |
1684 | if (viewer_connection->target_hostname) { |
1685 | g_string_free(viewer_connection->target_hostname, true); | |
1686 | } | |
b9e6ec43 | 1687 | |
4164020e SM |
1688 | if (viewer_connection->session_name) { |
1689 | g_string_free(viewer_connection->session_name, true); | |
1690 | } | |
b9e6ec43 | 1691 | |
4164020e SM |
1692 | if (viewer_connection->proto) { |
1693 | g_string_free(viewer_connection->proto, true); | |
1694 | } | |
ecb4ba8a | 1695 | |
afb0f12b | 1696 | delete viewer_connection; |
1cb3cdd7 | 1697 | |
4164020e | 1698 | bt_socket_fini(); |
b9e6ec43 FD |
1699 | |
1700 | end: | |
4164020e | 1701 | return; |
7cdc2bab | 1702 | } |