Commit | Line | Data |
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00e2e675 DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #define _GNU_SOURCE | |
19 | #include <assert.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
77c7c900 | 24 | #include <inttypes.h> |
00e2e675 DG |
25 | |
26 | #include <common/common.h> | |
27 | #include <common/defaults.h> | |
28 | #include <common/sessiond-comm/relayd.h> | |
50adc264 | 29 | #include <common/index/ctf-index.h> |
00e2e675 DG |
30 | |
31 | #include "relayd.h" | |
32 | ||
33 | /* | |
34 | * Send command. Fill up the header and append the data. | |
35 | */ | |
6151a90f | 36 | static int send_command(struct lttcomm_relayd_sock *rsock, |
7c9534d6 | 37 | enum lttcomm_relayd_command cmd, void *data, size_t size, |
00e2e675 DG |
38 | int flags) |
39 | { | |
40 | int ret; | |
41 | struct lttcomm_relayd_hdr header; | |
42 | char *buf; | |
43 | uint64_t buf_size = sizeof(header); | |
44 | ||
f96e4545 MD |
45 | if (rsock->sock.fd < 0) { |
46 | return -ECONNRESET; | |
47 | } | |
48 | ||
00e2e675 DG |
49 | if (data) { |
50 | buf_size += size; | |
51 | } | |
52 | ||
53 | buf = zmalloc(buf_size); | |
54 | if (buf == NULL) { | |
55 | PERROR("zmalloc relayd send command buf"); | |
56 | ret = -1; | |
57 | goto alloc_error; | |
58 | } | |
59 | ||
60 | header.cmd = htobe32(cmd); | |
61 | header.data_size = htobe64(size); | |
62 | ||
63 | /* Zeroed for now since not used. */ | |
64 | header.cmd_version = 0; | |
65 | header.circuit_id = 0; | |
66 | ||
67 | /* Prepare buffer to send. */ | |
68 | memcpy(buf, &header, sizeof(header)); | |
69 | if (data) { | |
70 | memcpy(buf + sizeof(header), data, size); | |
71 | } | |
72 | ||
6151a90f | 73 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 74 | if (ret < 0) { |
8994307f | 75 | ret = -errno; |
00e2e675 DG |
76 | goto error; |
77 | } | |
78 | ||
633d0084 | 79 | DBG3("Relayd sending command %d of size %" PRIu64, cmd, buf_size); |
00e2e675 DG |
80 | |
81 | error: | |
82 | free(buf); | |
83 | alloc_error: | |
84 | return ret; | |
85 | } | |
86 | ||
87 | /* | |
88 | * Receive reply data on socket. This MUST be call after send_command or else | |
89 | * could result in unexpected behavior(s). | |
90 | */ | |
6151a90f | 91 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
00e2e675 DG |
92 | { |
93 | int ret; | |
94 | ||
f96e4545 MD |
95 | if (rsock->sock.fd < 0) { |
96 | return -ECONNRESET; | |
97 | } | |
98 | ||
8fd623e0 | 99 | DBG3("Relayd waiting for reply of size %zu", size); |
00e2e675 | 100 | |
6151a90f | 101 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
20275fe8 DG |
102 | if (ret <= 0 || ret != size) { |
103 | if (ret == 0) { | |
104 | /* Orderly shutdown. */ | |
6151a90f | 105 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
20275fe8 | 106 | } else { |
8fd623e0 | 107 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
6151a90f | 108 | rsock->sock.fd, size, ret); |
20275fe8 DG |
109 | } |
110 | /* Always return -1 here and the caller can use errno. */ | |
111 | ret = -1; | |
00e2e675 DG |
112 | goto error; |
113 | } | |
114 | ||
115 | error: | |
116 | return ret; | |
117 | } | |
118 | ||
d3e2ba59 JD |
119 | /* |
120 | * Starting at 2.4, RELAYD_CREATE_SESSION takes additional parameters to | |
121 | * support the live reading capability. | |
122 | */ | |
123 | static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, | |
124 | uint64_t *session_id, char *session_name, char *hostname, | |
7d2f7452 | 125 | int session_live_timer, unsigned int snapshot) |
d3e2ba59 JD |
126 | { |
127 | int ret; | |
128 | struct lttcomm_relayd_create_session_2_4 msg; | |
129 | ||
130 | strncpy(msg.session_name, session_name, sizeof(msg.session_name)); | |
131 | strncpy(msg.hostname, hostname, sizeof(msg.hostname)); | |
132 | msg.live_timer = htobe32(session_live_timer); | |
7d2f7452 | 133 | msg.snapshot = htobe32(snapshot); |
d3e2ba59 JD |
134 | |
135 | /* Send command */ | |
136 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); | |
137 | if (ret < 0) { | |
138 | goto error; | |
139 | } | |
140 | ||
141 | error: | |
142 | return ret; | |
143 | } | |
144 | ||
145 | /* | |
146 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. | |
147 | */ | |
148 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock, | |
149 | uint64_t *session_id) | |
150 | { | |
151 | int ret; | |
152 | ||
153 | /* Send command */ | |
154 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); | |
155 | if (ret < 0) { | |
156 | goto error; | |
157 | } | |
158 | ||
159 | error: | |
160 | return ret; | |
161 | } | |
162 | ||
c5b6f4f0 DG |
163 | /* |
164 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
165 | * set session_id of the relayd if we have a successful reply from the relayd. | |
166 | * | |
20275fe8 DG |
167 | * On success, return 0 else a negative value which is either an errno error or |
168 | * a lttng error code from the relayd. | |
c5b6f4f0 | 169 | */ |
d3e2ba59 | 170 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, uint64_t *session_id, |
7d2f7452 DG |
171 | char *session_name, char *hostname, int session_live_timer, |
172 | unsigned int snapshot) | |
c5b6f4f0 DG |
173 | { |
174 | int ret; | |
175 | struct lttcomm_relayd_status_session reply; | |
176 | ||
6151a90f | 177 | assert(rsock); |
c5b6f4f0 DG |
178 | assert(session_id); |
179 | ||
180 | DBG("Relayd create session"); | |
181 | ||
d3e2ba59 JD |
182 | switch(rsock->minor) { |
183 | case 1: | |
184 | case 2: | |
185 | case 3: | |
186 | ret = relayd_create_session_2_1(rsock, session_id); | |
31d74dc3 | 187 | break; |
d3e2ba59 JD |
188 | case 4: |
189 | default: | |
7d2f7452 DG |
190 | ret = relayd_create_session_2_4(rsock, session_id, session_name, |
191 | hostname, session_live_timer, snapshot); | |
31d74dc3 | 192 | break; |
d3e2ba59 JD |
193 | } |
194 | ||
c5b6f4f0 DG |
195 | if (ret < 0) { |
196 | goto error; | |
197 | } | |
198 | ||
20275fe8 | 199 | /* Receive response */ |
6151a90f | 200 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
201 | if (ret < 0) { |
202 | goto error; | |
203 | } | |
204 | ||
205 | reply.session_id = be64toh(reply.session_id); | |
206 | reply.ret_code = be32toh(reply.ret_code); | |
207 | ||
208 | /* Return session id or negative ret code. */ | |
209 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
210 | ret = -1; |
211 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
212 | goto error; |
213 | } else { | |
214 | ret = 0; | |
215 | *session_id = reply.session_id; | |
216 | } | |
217 | ||
218 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
219 | ||
220 | error: | |
221 | return ret; | |
222 | } | |
223 | ||
00e2e675 DG |
224 | /* |
225 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
226 | * | |
227 | * On success return 0 else return ret_code negative value. | |
228 | */ | |
6151a90f | 229 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 JD |
230 | const char *pathname, uint64_t *stream_id, |
231 | uint64_t tracefile_size, uint64_t tracefile_count) | |
00e2e675 DG |
232 | { |
233 | int ret; | |
234 | struct lttcomm_relayd_add_stream msg; | |
0f907de1 | 235 | struct lttcomm_relayd_add_stream_2_2 msg_2_2; |
00e2e675 DG |
236 | struct lttcomm_relayd_status_stream reply; |
237 | ||
238 | /* Code flow error. Safety net. */ | |
6151a90f | 239 | assert(rsock); |
00e2e675 DG |
240 | assert(channel_name); |
241 | assert(pathname); | |
242 | ||
243 | DBG("Relayd adding stream for channel name %s", channel_name); | |
244 | ||
0f907de1 JD |
245 | /* Compat with relayd 2.1 */ |
246 | if (rsock->minor == 1) { | |
247 | strncpy(msg.channel_name, channel_name, sizeof(msg.channel_name)); | |
248 | strncpy(msg.pathname, pathname, sizeof(msg.pathname)); | |
00e2e675 | 249 | |
0f907de1 JD |
250 | /* Send command */ |
251 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
252 | if (ret < 0) { | |
253 | goto error; | |
254 | } | |
255 | } else { | |
256 | /* Compat with relayd 2.2+ */ | |
257 | strncpy(msg_2_2.channel_name, channel_name, sizeof(msg_2_2.channel_name)); | |
258 | strncpy(msg_2_2.pathname, pathname, sizeof(msg_2_2.pathname)); | |
259 | msg_2_2.tracefile_size = htobe64(tracefile_size); | |
260 | msg_2_2.tracefile_count = htobe64(tracefile_count); | |
261 | ||
262 | /* Send command */ | |
263 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg_2_2, sizeof(msg_2_2), 0); | |
264 | if (ret < 0) { | |
265 | goto error; | |
266 | } | |
00e2e675 DG |
267 | } |
268 | ||
633d0084 | 269 | /* Waiting for reply */ |
6151a90f | 270 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
271 | if (ret < 0) { |
272 | goto error; | |
273 | } | |
274 | ||
275 | /* Back to host bytes order. */ | |
276 | reply.handle = be64toh(reply.handle); | |
277 | reply.ret_code = be32toh(reply.ret_code); | |
278 | ||
279 | /* Return session id or negative ret code. */ | |
f73fabfd | 280 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
281 | ret = -1; |
282 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
283 | } else { |
284 | /* Success */ | |
285 | ret = 0; | |
286 | *stream_id = reply.handle; | |
287 | } | |
288 | ||
77c7c900 MD |
289 | DBG("Relayd stream added successfully with handle %" PRIu64, |
290 | reply.handle); | |
00e2e675 DG |
291 | |
292 | error: | |
293 | return ret; | |
294 | } | |
295 | ||
296 | /* | |
297 | * Check version numbers on the relayd. | |
d4519fa3 JD |
298 | * If major versions are compatible, we assign minor_to_use to the |
299 | * minor version of the procotol we are going to use for this session. | |
00e2e675 DG |
300 | * |
301 | * Return 0 if compatible else negative value. | |
302 | */ | |
6151a90f | 303 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
304 | { |
305 | int ret; | |
092b6259 | 306 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
307 | |
308 | /* Code flow error. Safety net. */ | |
6151a90f | 309 | assert(rsock); |
00e2e675 | 310 | |
6151a90f JD |
311 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
312 | rsock->minor); | |
00e2e675 | 313 | |
092b6259 | 314 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
315 | msg.major = htobe32(rsock->major); |
316 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 317 | |
00e2e675 | 318 | /* Send command */ |
6151a90f | 319 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
320 | if (ret < 0) { |
321 | goto error; | |
322 | } | |
323 | ||
20275fe8 | 324 | /* Receive response */ |
6151a90f | 325 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
326 | if (ret < 0) { |
327 | goto error; | |
328 | } | |
329 | ||
330 | /* Set back to host bytes order */ | |
092b6259 DG |
331 | msg.major = be32toh(msg.major); |
332 | msg.minor = be32toh(msg.minor); | |
333 | ||
334 | /* | |
335 | * Only validate the major version. If the other side is higher, | |
336 | * communication is not possible. Only major version equal can talk to each | |
337 | * other. If the minor version differs, the lowest version is used by both | |
338 | * sides. | |
092b6259 | 339 | */ |
6151a90f | 340 | if (msg.major != rsock->major) { |
d4519fa3 JD |
341 | /* Not compatible */ |
342 | ret = -1; | |
343 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", | |
6151a90f | 344 | msg.major, rsock->major); |
092b6259 | 345 | goto error; |
00e2e675 DG |
346 | } |
347 | ||
092b6259 | 348 | /* |
6151a90f JD |
349 | * If the relayd's minor version is higher, it will adapt to our version so |
350 | * we can continue to use the latest relayd communication data structure. | |
351 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 352 | */ |
6151a90f JD |
353 | if (rsock->minor > msg.minor) { |
354 | rsock->minor = msg.minor; | |
d4519fa3 | 355 | } |
092b6259 | 356 | |
d4519fa3 JD |
357 | /* Version number compatible */ |
358 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 359 | rsock->major, rsock->minor); |
d4519fa3 | 360 | ret = 0; |
00e2e675 DG |
361 | |
362 | error: | |
363 | return ret; | |
364 | } | |
365 | ||
00e2e675 DG |
366 | /* |
367 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
368 | * | |
369 | * On success return 0 else return ret_code negative value. | |
370 | */ | |
6151a90f | 371 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
372 | { |
373 | int ret; | |
374 | ||
375 | /* Code flow error. Safety net. */ | |
6151a90f | 376 | assert(rsock); |
00e2e675 | 377 | |
77c7c900 | 378 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
379 | |
380 | /* Send command */ | |
6151a90f | 381 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
382 | if (ret < 0) { |
383 | goto error; | |
384 | } | |
385 | ||
386 | DBG2("Relayd metadata added successfully"); | |
387 | ||
388 | /* | |
389 | * After that call, the metadata data MUST be sent to the relayd so the | |
390 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 391 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
392 | */ |
393 | ||
394 | error: | |
395 | return ret; | |
396 | } | |
397 | ||
398 | /* | |
6151a90f | 399 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 400 | */ |
6151a90f | 401 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
402 | { |
403 | /* Code flow error. Safety net. */ | |
6151a90f | 404 | assert(rsock); |
00e2e675 | 405 | |
f96e4545 MD |
406 | if (!rsock->sock.ops) { |
407 | /* | |
408 | * Attempting a connect on a non-initialized socket. | |
409 | */ | |
410 | return -ECONNRESET; | |
411 | } | |
412 | ||
00e2e675 DG |
413 | DBG3("Relayd connect ..."); |
414 | ||
6151a90f | 415 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
416 | } |
417 | ||
418 | /* | |
6151a90f | 419 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
420 | * |
421 | * If no socket operations are found, simply return 0 meaning that everything | |
422 | * is fine. Without operations, the socket can not possibly be opened or used. | |
423 | * This is possible if the socket was allocated but not created. However, the | |
424 | * caller could simply use it to store a valid file descriptor for instance | |
425 | * passed over a Unix socket and call this to cleanup but still without a valid | |
426 | * ops pointer. | |
427 | * | |
428 | * Return the close returned value. On error, a negative value is usually | |
429 | * returned back from close(2). | |
00e2e675 | 430 | */ |
6151a90f | 431 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 432 | { |
ffe60014 DG |
433 | int ret; |
434 | ||
00e2e675 | 435 | /* Code flow error. Safety net. */ |
6151a90f | 436 | assert(rsock); |
00e2e675 | 437 | |
ffe60014 | 438 | /* An invalid fd is fine, return success. */ |
6151a90f | 439 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
440 | ret = 0; |
441 | goto end; | |
442 | } | |
443 | ||
6151a90f | 444 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 445 | |
6151a90f JD |
446 | if (rsock->sock.ops) { |
447 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
448 | } else { |
449 | /* Default call if no specific ops found. */ | |
6151a90f | 450 | ret = close(rsock->sock.fd); |
ffe60014 DG |
451 | if (ret < 0) { |
452 | PERROR("relayd_close default close"); | |
453 | } | |
454 | } | |
f96e4545 | 455 | rsock->sock.fd = -1; |
ffe60014 DG |
456 | |
457 | end: | |
458 | return ret; | |
00e2e675 DG |
459 | } |
460 | ||
461 | /* | |
462 | * Send data header structure to the relayd. | |
463 | */ | |
6151a90f | 464 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
465 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
466 | { | |
467 | int ret; | |
468 | ||
469 | /* Code flow error. Safety net. */ | |
6151a90f | 470 | assert(rsock); |
00e2e675 DG |
471 | assert(hdr); |
472 | ||
f96e4545 MD |
473 | if (rsock->sock.fd < 0) { |
474 | return -ECONNRESET; | |
475 | } | |
476 | ||
8fd623e0 | 477 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
478 | |
479 | /* Again, safety net */ | |
480 | if (size == 0) { | |
481 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
482 | } | |
483 | ||
484 | /* Only send data header. */ | |
6151a90f | 485 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 486 | if (ret < 0) { |
8994307f | 487 | ret = -errno; |
00e2e675 DG |
488 | goto error; |
489 | } | |
490 | ||
491 | /* | |
492 | * The data MUST be sent right after that command for the receive on the | |
493 | * other end to match the size in the header. | |
494 | */ | |
495 | ||
496 | error: | |
497 | return ret; | |
498 | } | |
173af62f DG |
499 | |
500 | /* | |
501 | * Send close stream command to the relayd. | |
502 | */ | |
6151a90f | 503 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
504 | uint64_t last_net_seq_num) |
505 | { | |
506 | int ret; | |
507 | struct lttcomm_relayd_close_stream msg; | |
508 | struct lttcomm_relayd_generic_reply reply; | |
509 | ||
510 | /* Code flow error. Safety net. */ | |
6151a90f | 511 | assert(rsock); |
173af62f | 512 | |
77c7c900 | 513 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f DG |
514 | |
515 | msg.stream_id = htobe64(stream_id); | |
516 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
517 | ||
518 | /* Send command */ | |
6151a90f | 519 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
520 | if (ret < 0) { |
521 | goto error; | |
522 | } | |
523 | ||
20275fe8 | 524 | /* Receive response */ |
6151a90f | 525 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
526 | if (ret < 0) { |
527 | goto error; | |
528 | } | |
529 | ||
530 | reply.ret_code = be32toh(reply.ret_code); | |
531 | ||
532 | /* Return session id or negative ret code. */ | |
f73fabfd | 533 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
534 | ret = -1; |
535 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
536 | } else { |
537 | /* Success */ | |
538 | ret = 0; | |
539 | } | |
540 | ||
77c7c900 | 541 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
542 | |
543 | error: | |
544 | return ret; | |
545 | } | |
c8f59ee5 DG |
546 | |
547 | /* | |
548 | * Check for data availability for a given stream id. | |
549 | * | |
6d805429 | 550 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 551 | */ |
6151a90f | 552 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
553 | uint64_t last_net_seq_num) |
554 | { | |
555 | int ret; | |
6d805429 | 556 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
557 | struct lttcomm_relayd_generic_reply reply; |
558 | ||
559 | /* Code flow error. Safety net. */ | |
6151a90f | 560 | assert(rsock); |
c8f59ee5 | 561 | |
6d805429 | 562 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 DG |
563 | |
564 | msg.stream_id = htobe64(stream_id); | |
565 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
566 | ||
567 | /* Send command */ | |
6151a90f | 568 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
569 | sizeof(msg), 0); |
570 | if (ret < 0) { | |
571 | goto error; | |
572 | } | |
573 | ||
20275fe8 | 574 | /* Receive response */ |
6151a90f | 575 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
576 | if (ret < 0) { |
577 | goto error; | |
578 | } | |
579 | ||
580 | reply.ret_code = be32toh(reply.ret_code); | |
581 | ||
582 | /* Return session id or negative ret code. */ | |
583 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 584 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
585 | } |
586 | ||
587 | /* At this point, the ret code is either 1 or 0 */ | |
588 | ret = reply.ret_code; | |
589 | ||
6d805429 | 590 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 591 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
592 | |
593 | error: | |
594 | return ret; | |
595 | } | |
596 | ||
597 | /* | |
598 | * Check on the relayd side for a quiescent state on the control socket. | |
599 | */ | |
6151a90f | 600 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 601 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
602 | { |
603 | int ret; | |
ad7051c0 | 604 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
605 | struct lttcomm_relayd_generic_reply reply; |
606 | ||
607 | /* Code flow error. Safety net. */ | |
6151a90f | 608 | assert(rsock); |
c8f59ee5 DG |
609 | |
610 | DBG("Relayd checking quiescent control state"); | |
611 | ||
ad7051c0 DG |
612 | msg.stream_id = htobe64(metadata_stream_id); |
613 | ||
c8f59ee5 | 614 | /* Send command */ |
6151a90f | 615 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
616 | if (ret < 0) { |
617 | goto error; | |
618 | } | |
619 | ||
20275fe8 | 620 | /* Receive response */ |
6151a90f | 621 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
622 | if (ret < 0) { |
623 | goto error; | |
624 | } | |
625 | ||
626 | reply.ret_code = be32toh(reply.ret_code); | |
627 | ||
628 | /* Return session id or negative ret code. */ | |
629 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
630 | ret = -1; |
631 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
632 | goto error; |
633 | } | |
634 | ||
635 | /* Control socket is quiescent */ | |
6d805429 | 636 | return 0; |
c8f59ee5 DG |
637 | |
638 | error: | |
639 | return ret; | |
640 | } | |
f7079f67 DG |
641 | |
642 | /* | |
643 | * Begin a data pending command for a specific session id. | |
644 | */ | |
6151a90f | 645 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
646 | { |
647 | int ret; | |
648 | struct lttcomm_relayd_begin_data_pending msg; | |
649 | struct lttcomm_relayd_generic_reply reply; | |
650 | ||
651 | /* Code flow error. Safety net. */ | |
6151a90f | 652 | assert(rsock); |
f7079f67 DG |
653 | |
654 | DBG("Relayd begin data pending"); | |
655 | ||
656 | msg.session_id = htobe64(id); | |
657 | ||
658 | /* Send command */ | |
6151a90f | 659 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
660 | if (ret < 0) { |
661 | goto error; | |
662 | } | |
663 | ||
20275fe8 | 664 | /* Receive response */ |
6151a90f | 665 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
666 | if (ret < 0) { |
667 | goto error; | |
668 | } | |
669 | ||
670 | reply.ret_code = be32toh(reply.ret_code); | |
671 | ||
672 | /* Return session id or negative ret code. */ | |
673 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
674 | ret = -1; |
675 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
676 | goto error; |
677 | } | |
678 | ||
679 | return 0; | |
680 | ||
681 | error: | |
682 | return ret; | |
683 | } | |
684 | ||
685 | /* | |
686 | * End a data pending command for a specific session id. | |
687 | * | |
688 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
689 | * streamed or 1 if it is the case. | |
690 | */ | |
6151a90f | 691 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
692 | unsigned int *is_data_inflight) |
693 | { | |
af6c30b5 | 694 | int ret, recv_ret; |
f7079f67 DG |
695 | struct lttcomm_relayd_end_data_pending msg; |
696 | struct lttcomm_relayd_generic_reply reply; | |
697 | ||
698 | /* Code flow error. Safety net. */ | |
6151a90f | 699 | assert(rsock); |
f7079f67 DG |
700 | |
701 | DBG("Relayd end data pending"); | |
702 | ||
703 | msg.session_id = htobe64(id); | |
704 | ||
705 | /* Send command */ | |
6151a90f | 706 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
707 | if (ret < 0) { |
708 | goto error; | |
709 | } | |
710 | ||
20275fe8 | 711 | /* Receive response */ |
6151a90f | 712 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
713 | if (ret < 0) { |
714 | goto error; | |
715 | } | |
716 | ||
af6c30b5 DG |
717 | recv_ret = be32toh(reply.ret_code); |
718 | if (recv_ret < 0) { | |
719 | ret = recv_ret; | |
f7079f67 DG |
720 | goto error; |
721 | } | |
722 | ||
af6c30b5 | 723 | *is_data_inflight = recv_ret; |
f7079f67 | 724 | |
af6c30b5 | 725 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
726 | |
727 | return 0; | |
728 | ||
729 | error: | |
730 | return ret; | |
731 | } | |
1c20f0e2 JD |
732 | |
733 | /* | |
734 | * Send index to the relayd. | |
735 | */ | |
736 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 737 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
738 | uint64_t net_seq_num) |
739 | { | |
740 | int ret; | |
741 | struct lttcomm_relayd_index msg; | |
742 | struct lttcomm_relayd_generic_reply reply; | |
743 | ||
744 | /* Code flow error. Safety net. */ | |
745 | assert(rsock); | |
746 | ||
747 | if (rsock->minor < 4) { | |
748 | DBG("Not sending indexes before protocol 2.4"); | |
749 | ret = 0; | |
750 | goto error; | |
751 | } | |
752 | ||
753 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
754 | ||
755 | msg.relay_stream_id = htobe64(relay_stream_id); | |
756 | msg.net_seq_num = htobe64(net_seq_num); | |
757 | ||
758 | /* The index is already in big endian. */ | |
759 | msg.packet_size = index->packet_size; | |
760 | msg.content_size = index->content_size; | |
761 | msg.timestamp_begin = index->timestamp_begin; | |
762 | msg.timestamp_end = index->timestamp_end; | |
763 | msg.events_discarded = index->events_discarded; | |
764 | msg.stream_id = index->stream_id; | |
765 | ||
766 | /* Send command */ | |
767 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, sizeof(msg), 0); | |
768 | if (ret < 0) { | |
769 | goto error; | |
770 | } | |
771 | ||
772 | /* Receive response */ | |
773 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
774 | if (ret < 0) { | |
775 | goto error; | |
776 | } | |
777 | ||
778 | reply.ret_code = be32toh(reply.ret_code); | |
779 | ||
780 | /* Return session id or negative ret code. */ | |
781 | if (reply.ret_code != LTTNG_OK) { | |
782 | ret = -1; | |
783 | ERR("Relayd send index replied error %d", reply.ret_code); | |
784 | } else { | |
785 | /* Success */ | |
786 | ret = 0; | |
787 | } | |
788 | ||
789 | error: | |
790 | return ret; | |
791 | } |