2 * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-LIVE-SRC-VIEWER"
33 #include <sys/types.h>
36 #include <babeltrace/compat/socket-internal.h>
37 #include <babeltrace/endian-internal.h>
38 #include <babeltrace/compiler-internal.h>
39 #include <babeltrace/common-internal.h>
40 #include <babeltrace/babeltrace.h>
42 #include "lttng-live-internal.h"
43 #include "viewer-connection.h"
44 #include "lttng-viewer-abi.h"
45 #include "data-stream.h"
48 static ssize_t
lttng_live_recv(struct bt_live_viewer_connection
*viewer_connection
,
49 void *buf
, size_t len
)
52 size_t copied
= 0, to_copy
= len
;
53 struct lttng_live_component
*lttng_live
=
54 viewer_connection
->lttng_live
;
55 BT_SOCKET sock
= viewer_connection
->control_sock
;
58 ret
= bt_socket_recv(sock
, buf
+ copied
, to_copy
, 0);
60 BT_ASSERT(ret
<= to_copy
);
64 if (ret
== BT_SOCKET_ERROR
&& bt_socket_interrupted()) {
65 if (lttng_live_is_canceled(lttng_live
)) {
71 } while (ret
> 0 && to_copy
> 0);
74 /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */
78 static ssize_t
lttng_live_send(struct bt_live_viewer_connection
*viewer_connection
,
79 const void *buf
, size_t len
)
81 struct lttng_live_component
*lttng_live
=
82 viewer_connection
->lttng_live
;
83 BT_SOCKET sock
= viewer_connection
->control_sock
;
87 ret
= bt_socket_send_nosigpipe(sock
, buf
, len
);
88 if (ret
== BT_SOCKET_ERROR
&& bt_socket_interrupted()) {
89 if (lttng_live_is_canceled(lttng_live
)) {
101 static int parse_url(struct bt_live_viewer_connection
*viewer_connection
)
103 char error_buf
[256] = { 0 };
104 struct bt_common_lttng_live_url_parts lttng_live_url_parts
= { 0 };
106 const char *path
= viewer_connection
->url
->str
;
112 lttng_live_url_parts
= bt_common_parse_lttng_live_url(path
,
113 error_buf
, sizeof(error_buf
));
114 if (!lttng_live_url_parts
.proto
) {
115 BT_LOGW("Invalid LTTng live URL format: %s", error_buf
);
119 viewer_connection
->relay_hostname
=
120 lttng_live_url_parts
.hostname
;
121 lttng_live_url_parts
.hostname
= NULL
;
123 if (lttng_live_url_parts
.port
>= 0) {
124 viewer_connection
->port
= lttng_live_url_parts
.port
;
126 viewer_connection
->port
= LTTNG_DEFAULT_NETWORK_VIEWER_PORT
;
129 viewer_connection
->target_hostname
=
130 lttng_live_url_parts
.target_hostname
;
131 lttng_live_url_parts
.target_hostname
= NULL
;
133 if (lttng_live_url_parts
.session_name
) {
134 viewer_connection
->session_name
=
135 lttng_live_url_parts
.session_name
;
136 lttng_live_url_parts
.session_name
= NULL
;
139 BT_LOGD("Connecting to hostname : %s, port : %d, "
140 "target hostname : %s, session name : %s, "
142 viewer_connection
->relay_hostname
->str
,
143 viewer_connection
->port
,
144 viewer_connection
->target_hostname
== NULL
?
145 "<none>" : viewer_connection
->target_hostname
->str
,
146 viewer_connection
->session_name
== NULL
?
147 "<none>" : viewer_connection
->session_name
->str
,
148 lttng_live_url_parts
.proto
->str
);
152 bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts
);
156 static int lttng_live_handshake(struct bt_live_viewer_connection
*viewer_connection
)
158 struct lttng_viewer_cmd cmd
;
159 struct lttng_viewer_connect connect
;
163 cmd
.cmd
= htobe32(LTTNG_VIEWER_CONNECT
);
164 cmd
.data_size
= htobe64((uint64_t) sizeof(connect
));
165 cmd
.cmd_version
= htobe32(0);
167 connect
.viewer_session_id
= -1ULL; /* will be set on recv */
168 connect
.major
= htobe32(LTTNG_LIVE_MAJOR
);
169 connect
.minor
= htobe32(LTTNG_LIVE_MINOR
);
170 connect
.type
= htobe32(LTTNG_VIEWER_CLIENT_COMMAND
);
172 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
173 if (ret_len
== BT_SOCKET_ERROR
) {
174 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
177 BT_ASSERT(ret_len
== sizeof(cmd
));
179 ret_len
= lttng_live_send(viewer_connection
, &connect
, sizeof(connect
));
180 if (ret_len
== BT_SOCKET_ERROR
) {
181 BT_LOGE("Error sending version: %s", bt_socket_errormsg());
184 BT_ASSERT(ret_len
== sizeof(connect
));
186 ret_len
= lttng_live_recv(viewer_connection
, &connect
, sizeof(connect
));
188 BT_LOGI("Remote side has closed connection");
191 if (ret_len
== BT_SOCKET_ERROR
) {
192 BT_LOGE("Error receiving version: %s", bt_socket_errormsg());
195 BT_ASSERT(ret_len
== sizeof(connect
));
197 BT_LOGD("Received viewer session ID : %" PRIu64
,
198 (uint64_t) be64toh(connect
.viewer_session_id
));
199 BT_LOGD("Relayd version : %u.%u", be32toh(connect
.major
),
200 be32toh(connect
.minor
));
202 if (LTTNG_LIVE_MAJOR
!= be32toh(connect
.major
)) {
203 BT_LOGE("Incompatible lttng-relayd protocol");
206 /* Use the smallest protocol version implemented. */
207 if (LTTNG_LIVE_MINOR
> be32toh(connect
.minor
)) {
208 viewer_connection
->minor
= be32toh(connect
.minor
);
210 viewer_connection
->minor
= LTTNG_LIVE_MINOR
;
212 viewer_connection
->major
= LTTNG_LIVE_MAJOR
;
217 BT_LOGE("Unable to establish connection");
221 static int lttng_live_connect_viewer(struct bt_live_viewer_connection
*viewer_connection
)
223 struct hostent
*host
;
224 struct sockaddr_in server_addr
;
227 if (parse_url(viewer_connection
)) {
231 host
= gethostbyname(viewer_connection
->relay_hostname
->str
);
233 BT_LOGE("Cannot lookup hostname %s",
234 viewer_connection
->relay_hostname
->str
);
238 if ((viewer_connection
->control_sock
= socket(AF_INET
, SOCK_STREAM
, 0)) == BT_INVALID_SOCKET
) {
239 BT_LOGE("Socket creation failed: %s", bt_socket_errormsg());
243 server_addr
.sin_family
= AF_INET
;
244 server_addr
.sin_port
= htons(viewer_connection
->port
);
245 server_addr
.sin_addr
= *((struct in_addr
*) host
->h_addr
);
246 memset(&(server_addr
.sin_zero
), 0, 8);
248 if (connect(viewer_connection
->control_sock
, (struct sockaddr
*) &server_addr
,
249 sizeof(struct sockaddr
)) == BT_SOCKET_ERROR
) {
250 BT_LOGE("Connection failed: %s", bt_socket_errormsg());
253 if (lttng_live_handshake(viewer_connection
)) {
262 if (viewer_connection
->control_sock
!= BT_INVALID_SOCKET
) {
263 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
264 BT_LOGE("Close: %s", bt_socket_errormsg());
267 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
271 static void lttng_live_disconnect_viewer(struct bt_live_viewer_connection
*viewer_connection
)
273 if (viewer_connection
->control_sock
== BT_INVALID_SOCKET
) {
276 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
277 BT_LOGE("Close: %s", bt_socket_errormsg());
278 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
282 static void connection_release(bt_object
*obj
)
284 struct bt_live_viewer_connection
*conn
=
285 container_of(obj
, struct bt_live_viewer_connection
, obj
);
287 bt_live_viewer_connection_destroy(conn
);
291 enum bt_value_status
list_update_session(bt_value
*results
,
292 const struct lttng_viewer_session
*session
,
295 enum bt_value_status ret
= BT_VALUE_STATUS_OK
;
296 bt_value
*map
= NULL
;
297 bt_value
*hostname
= NULL
;
298 bt_value
*session_name
= NULL
;
299 bt_value
*btval
= NULL
;
303 len
= bt_value_array_get_size(results
);
305 ret
= BT_VALUE_STATUS_ERROR
;
308 for (i
= 0; i
< len
; i
++) {
309 const char *hostname_str
= NULL
;
310 const char *session_name_str
= NULL
;
312 map
= bt_value_array_get(results
, (size_t) i
);
314 ret
= BT_VALUE_STATUS_ERROR
;
317 hostname
= bt_value_map_get(map
, "target-hostname");
319 ret
= BT_VALUE_STATUS_ERROR
;
322 session_name
= bt_value_map_get(map
, "session-name");
324 ret
= BT_VALUE_STATUS_ERROR
;
327 hostname_str
= bt_value_string_get(hostname
);
328 session_name_str
= bt_value_string_get(session_name
);
330 if (!strcmp(session
->hostname
, hostname_str
)
331 && !strcmp(session
->session_name
,
334 uint32_t streams
= be32toh(session
->streams
);
335 uint32_t clients
= be32toh(session
->clients
);
339 btval
= bt_value_map_get(map
, "stream-count");
341 ret
= BT_VALUE_STATUS_ERROR
;
344 val
= bt_value_integer_get(btval
);
347 ret
= bt_private_integer_bool_set(btval
, val
);
348 if (ret
!= BT_VALUE_STATUS_OK
) {
351 BT_VALUE_PUT_REF_AND_RESET(btval
);
353 btval
= bt_value_map_get(map
, "client-count");
355 ret
= BT_VALUE_STATUS_ERROR
;
358 val
= bt_value_integer_get(btval
);
360 val
= max_t(int64_t, clients
, val
);
361 ret
= bt_private_integer_bool_set(btval
, val
);
362 if (ret
!= BT_VALUE_STATUS_OK
) {
365 BT_VALUE_PUT_REF_AND_RESET(btval
);
368 BT_VALUE_PUT_REF_AND_RESET(hostname
);
369 BT_VALUE_PUT_REF_AND_RESET(session_name
);
370 BT_VALUE_PUT_REF_AND_RESET(map
);
377 BT_VALUE_PUT_REF_AND_RESET(btval
);
378 BT_VALUE_PUT_REF_AND_RESET(hostname
);
379 BT_VALUE_PUT_REF_AND_RESET(session_name
);
380 BT_VALUE_PUT_REF_AND_RESET(map
);
386 enum bt_value_status
list_append_session(bt_value
*results
,
388 const struct lttng_viewer_session
*session
)
390 enum bt_value_status ret
= BT_VALUE_STATUS_OK
;
391 bt_value
*map
= NULL
;
396 * If the session already exists, add the stream count to it,
397 * and do max of client counts.
399 ret
= list_update_session(results
, session
, &found
);
400 if (ret
!= BT_VALUE_STATUS_OK
|| found
) {
404 map
= bt_private_value_map_create();
406 ret
= BT_VALUE_STATUS_ERROR
;
410 if (base_url
->len
< 1) {
411 ret
= BT_VALUE_STATUS_ERROR
;
418 url
= g_string_new(base_url
->str
);
419 g_string_append(url
, "/host/");
420 g_string_append(url
, session
->hostname
);
421 g_string_append_c(url
, '/');
422 g_string_append(url
, session
->session_name
);
424 ret
= bt_private_value_map_insert_string_entry(map
, "url", url
->str
);
425 if (ret
!= BT_VALUE_STATUS_OK
) {
430 * key = "target-hostname",
433 ret
= bt_private_value_map_insert_string_entry(map
, "target-hostname",
435 if (ret
!= BT_VALUE_STATUS_OK
) {
440 * key = "session-name",
443 ret
= bt_private_value_map_insert_string_entry(map
, "session-name",
444 session
->session_name
);
445 if (ret
!= BT_VALUE_STATUS_OK
) {
454 uint32_t live_timer
= be32toh(session
->live_timer
);
456 ret
= bt_private_value_map_insert_integer_entry(map
, "timer-us",
458 if (ret
!= BT_VALUE_STATUS_OK
) {
464 * key = "stream-count",
468 uint32_t streams
= be32toh(session
->streams
);
470 ret
= bt_private_value_map_insert_integer_entry(map
, "stream-count",
472 if (ret
!= BT_VALUE_STATUS_OK
) {
479 * key = "client-count",
483 uint32_t clients
= be32toh(session
->clients
);
485 ret
= bt_private_value_map_insert_integer_entry(map
, "client-count",
487 if (ret
!= BT_VALUE_STATUS_OK
) {
492 ret
= bt_private_value_array_append_element(results
, map
);
495 g_string_free(url
, TRUE
);
497 BT_VALUE_PUT_REF_AND_RESET(map
);
502 * Data structure returned:
513 * key = "target-hostname",
517 * key = "session-name",
525 * key = "stream-count",
529 * key = "client-count",
538 bt_value
*bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection
*viewer_connection
)
540 bt_value
*results
= NULL
;
541 struct lttng_viewer_cmd cmd
;
542 struct lttng_viewer_list_sessions list
;
543 uint32_t i
, sessions_count
;
546 if (lttng_live_handshake(viewer_connection
)) {
550 results
= bt_private_value_array_create();
552 BT_LOGE("Error creating array");
556 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
557 cmd
.data_size
= htobe64((uint64_t) 0);
558 cmd
.cmd_version
= htobe32(0);
560 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
561 if (ret_len
== BT_SOCKET_ERROR
) {
562 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
565 BT_ASSERT(ret_len
== sizeof(cmd
));
567 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
569 BT_LOGI("Remote side has closed connection");
572 if (ret_len
== BT_SOCKET_ERROR
) {
573 BT_LOGE("Error receiving session list: %s", bt_socket_errormsg());
576 BT_ASSERT(ret_len
== sizeof(list
));
578 sessions_count
= be32toh(list
.sessions_count
);
579 for (i
= 0; i
< sessions_count
; i
++) {
580 struct lttng_viewer_session lsession
;
582 ret_len
= lttng_live_recv(viewer_connection
,
583 &lsession
, sizeof(lsession
));
585 BT_LOGI("Remote side has closed connection");
588 if (ret_len
== BT_SOCKET_ERROR
) {
589 BT_LOGE("Error receiving session: %s", bt_socket_errormsg());
592 BT_ASSERT(ret_len
== sizeof(lsession
));
593 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
594 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
595 if (list_append_session(results
,
596 viewer_connection
->url
, &lsession
)
597 != BT_VALUE_STATUS_OK
) {
603 BT_VALUE_PUT_REF_AND_RESET(results
);
609 int lttng_live_query_session_ids(struct lttng_live_component
*lttng_live
)
611 struct lttng_viewer_cmd cmd
;
612 struct lttng_viewer_list_sessions list
;
613 struct lttng_viewer_session lsession
;
614 uint32_t i
, sessions_count
;
617 struct bt_live_viewer_connection
*viewer_connection
=
618 lttng_live
->viewer_connection
;
620 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
621 cmd
.data_size
= htobe64((uint64_t) 0);
622 cmd
.cmd_version
= htobe32(0);
624 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
625 if (ret_len
== BT_SOCKET_ERROR
) {
626 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
629 BT_ASSERT(ret_len
== sizeof(cmd
));
631 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
633 BT_LOGI("Remote side has closed connection");
636 if (ret_len
== BT_SOCKET_ERROR
) {
637 BT_LOGE("Error receiving session list: %s", bt_socket_errormsg());
640 BT_ASSERT(ret_len
== sizeof(list
));
642 sessions_count
= be32toh(list
.sessions_count
);
643 for (i
= 0; i
< sessions_count
; i
++) {
644 ret_len
= lttng_live_recv(viewer_connection
,
645 &lsession
, sizeof(lsession
));
647 BT_LOGI("Remote side has closed connection");
650 if (ret_len
== BT_SOCKET_ERROR
) {
651 BT_LOGE("Error receiving session: %s", bt_socket_errormsg());
654 BT_ASSERT(ret_len
== sizeof(lsession
));
655 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
656 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
657 session_id
= be64toh(lsession
.id
);
659 BT_LOGD("Adding session %" PRIu64
" hostname: %s session_name: %s",
660 session_id
, lsession
.hostname
, lsession
.session_name
);
662 if ((strncmp(lsession
.session_name
,
663 viewer_connection
->session_name
->str
,
664 LTTNG_VIEWER_NAME_MAX
) == 0) && (strncmp(lsession
.hostname
,
665 viewer_connection
->target_hostname
->str
,
666 LTTNG_VIEWER_HOST_NAME_MAX
) == 0)) {
667 if (lttng_live_add_session(lttng_live
, session_id
,
669 lsession
.session_name
)) {
678 BT_LOGE("Unable to query session ids");
683 int lttng_live_create_viewer_session(struct lttng_live_component
*lttng_live
)
685 struct lttng_viewer_cmd cmd
;
686 struct lttng_viewer_create_session_response resp
;
688 struct bt_live_viewer_connection
*viewer_connection
=
689 lttng_live
->viewer_connection
;
691 cmd
.cmd
= htobe32(LTTNG_VIEWER_CREATE_SESSION
);
692 cmd
.data_size
= htobe64((uint64_t) 0);
693 cmd
.cmd_version
= htobe32(0);
695 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
696 if (ret_len
== BT_SOCKET_ERROR
) {
697 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
700 BT_ASSERT(ret_len
== sizeof(cmd
));
702 ret_len
= lttng_live_recv(viewer_connection
, &resp
, sizeof(resp
));
704 BT_LOGI("Remote side has closed connection");
707 if (ret_len
== BT_SOCKET_ERROR
) {
708 BT_LOGE("Error receiving create session reply: %s", bt_socket_errormsg());
711 BT_ASSERT(ret_len
== sizeof(resp
));
713 if (be32toh(resp
.status
) != LTTNG_VIEWER_CREATE_SESSION_OK
) {
714 BT_LOGE("Error creating viewer session");
717 if (lttng_live_query_session_ids(lttng_live
)) {
728 int receive_streams(struct lttng_live_session
*session
,
729 uint32_t stream_count
)
733 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
734 struct bt_live_viewer_connection
*viewer_connection
=
735 lttng_live
->viewer_connection
;
737 BT_LOGD("Getting %" PRIu32
" new streams:", stream_count
);
738 for (i
= 0; i
< stream_count
; i
++) {
739 struct lttng_viewer_stream stream
;
740 struct lttng_live_stream_iterator
*live_stream
;
742 uint64_t ctf_trace_id
;
744 ret_len
= lttng_live_recv(viewer_connection
, &stream
, sizeof(stream
));
746 BT_LOGI("Remote side has closed connection");
749 if (ret_len
== BT_SOCKET_ERROR
) {
750 BT_LOGE("Error receiving stream");
753 BT_ASSERT(ret_len
== sizeof(stream
));
754 stream
.path_name
[LTTNG_VIEWER_PATH_MAX
- 1] = '\0';
755 stream
.channel_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
756 stream_id
= be64toh(stream
.id
);
757 ctf_trace_id
= be64toh(stream
.ctf_trace_id
);
759 if (stream
.metadata_flag
) {
760 BT_LOGD(" metadata stream %" PRIu64
" : %s/%s",
761 stream_id
, stream
.path_name
,
762 stream
.channel_name
);
763 if (lttng_live_metadata_create_stream(session
,
764 ctf_trace_id
, stream_id
,
766 BT_LOGE("Error creating metadata stream");
770 session
->lazy_stream_notif_init
= true;
772 BT_LOGD(" stream %" PRIu64
" : %s/%s",
773 stream_id
, stream
.path_name
,
774 stream
.channel_name
);
775 live_stream
= lttng_live_stream_iterator_create(session
,
776 ctf_trace_id
, stream_id
);
778 BT_LOGE("Error creating streamn");
790 int lttng_live_attach_session(struct lttng_live_session
*session
)
792 struct lttng_viewer_cmd cmd
;
793 struct lttng_viewer_attach_session_request rq
;
794 struct lttng_viewer_attach_session_response rp
;
796 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
797 struct bt_live_viewer_connection
*viewer_connection
=
798 lttng_live
->viewer_connection
;
799 uint64_t session_id
= session
->id
;
800 uint32_t streams_count
;
802 if (session
->attached
) {
806 cmd
.cmd
= htobe32(LTTNG_VIEWER_ATTACH_SESSION
);
807 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
808 cmd
.cmd_version
= htobe32(0);
810 memset(&rq
, 0, sizeof(rq
));
811 rq
.session_id
= htobe64(session_id
);
812 // TODO: add cmd line parameter to select seek beginning
813 // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
814 rq
.seek
= htobe32(LTTNG_VIEWER_SEEK_LAST
);
816 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
817 if (ret_len
== BT_SOCKET_ERROR
) {
818 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
821 BT_ASSERT(ret_len
== sizeof(cmd
));
823 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
824 if (ret_len
== BT_SOCKET_ERROR
) {
825 BT_LOGE("Error sending attach request: %s", bt_socket_errormsg());
828 BT_ASSERT(ret_len
== sizeof(rq
));
830 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
832 BT_LOGI("Remote side has closed connection");
835 if (ret_len
== BT_SOCKET_ERROR
) {
836 BT_LOGE("Error receiving attach response: %s", bt_socket_errormsg());
839 BT_ASSERT(ret_len
== sizeof(rp
));
841 streams_count
= be32toh(rp
.streams_count
);
842 switch(be32toh(rp
.status
)) {
843 case LTTNG_VIEWER_ATTACH_OK
:
845 case LTTNG_VIEWER_ATTACH_UNK
:
846 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
848 case LTTNG_VIEWER_ATTACH_ALREADY
:
849 BT_LOGW("There is already a viewer attached to this session");
851 case LTTNG_VIEWER_ATTACH_NOT_LIVE
:
852 BT_LOGW("Not a live session");
854 case LTTNG_VIEWER_ATTACH_SEEK_ERR
:
855 BT_LOGE("Wrong seek parameter");
858 BT_LOGE("Unknown attach return code %u", be32toh(rp
.status
));
862 /* We receive the initial list of streams. */
863 if (receive_streams(session
, streams_count
)) {
867 session
->attached
= true;
868 session
->new_streams_needed
= false;
877 int lttng_live_detach_session(struct lttng_live_session
*session
)
879 struct lttng_viewer_cmd cmd
;
880 struct lttng_viewer_detach_session_request rq
;
881 struct lttng_viewer_detach_session_response rp
;
883 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
884 struct bt_live_viewer_connection
*viewer_connection
=
885 lttng_live
->viewer_connection
;
886 uint64_t session_id
= session
->id
;
888 if (!session
->attached
) {
892 cmd
.cmd
= htobe32(LTTNG_VIEWER_DETACH_SESSION
);
893 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
894 cmd
.cmd_version
= htobe32(0);
896 memset(&rq
, 0, sizeof(rq
));
897 rq
.session_id
= htobe64(session_id
);
899 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
900 if (ret_len
== BT_SOCKET_ERROR
) {
901 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
904 BT_ASSERT(ret_len
== sizeof(cmd
));
906 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
907 if (ret_len
== BT_SOCKET_ERROR
) {
908 BT_LOGE("Error sending detach request: %s", bt_socket_errormsg());
911 BT_ASSERT(ret_len
== sizeof(rq
));
913 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
915 BT_LOGI("Remote side has closed connection");
918 if (ret_len
== BT_SOCKET_ERROR
) {
919 BT_LOGE("Error receiving detach response: %s", bt_socket_errormsg());
922 BT_ASSERT(ret_len
== sizeof(rp
));
924 switch(be32toh(rp
.status
)) {
925 case LTTNG_VIEWER_DETACH_SESSION_OK
:
927 case LTTNG_VIEWER_DETACH_SESSION_UNK
:
928 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
930 case LTTNG_VIEWER_DETACH_SESSION_ERR
:
931 BT_LOGW("Error detaching session id %" PRIu64
"", session_id
);
934 BT_LOGE("Unknown detach return code %u", be32toh(rp
.status
));
938 session
->attached
= false;
947 ssize_t
lttng_live_get_one_metadata_packet(struct lttng_live_trace
*trace
,
952 struct lttng_viewer_cmd cmd
;
953 struct lttng_viewer_get_metadata rq
;
954 struct lttng_viewer_metadata_packet rp
;
957 struct lttng_live_session
*session
= trace
->session
;
958 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
959 struct lttng_live_metadata
*metadata
= trace
->metadata
;
960 struct bt_live_viewer_connection
*viewer_connection
=
961 lttng_live
->viewer_connection
;
963 rq
.stream_id
= htobe64(metadata
->stream_id
);
964 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_METADATA
);
965 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
966 cmd
.cmd_version
= htobe32(0);
968 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
969 if (ret_len
== BT_SOCKET_ERROR
) {
970 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
973 BT_ASSERT(ret_len
== sizeof(cmd
));
975 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
976 if (ret_len
== BT_SOCKET_ERROR
) {
977 BT_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg());
980 BT_ASSERT(ret_len
== sizeof(rq
));
982 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
984 BT_LOGI("Remote side has closed connection");
987 if (ret_len
== BT_SOCKET_ERROR
) {
988 BT_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg());
991 BT_ASSERT(ret_len
== sizeof(rp
));
993 switch (be32toh(rp
.status
)) {
994 case LTTNG_VIEWER_METADATA_OK
:
995 BT_LOGD("get_metadata : OK");
997 case LTTNG_VIEWER_NO_NEW_METADATA
:
998 BT_LOGD("get_metadata : NO NEW");
1001 case LTTNG_VIEWER_METADATA_ERR
:
1002 BT_LOGD("get_metadata : ERR");
1005 BT_LOGD("get_metadata : UNKNOWN");
1009 len
= be64toh(rp
.len
);
1010 BT_LOGD("Writing %" PRIu64
" bytes to metadata", len
);
1015 data
= zmalloc(len
);
1017 BT_LOGE("relay data zmalloc: %s", strerror(errno
));
1020 ret_len
= lttng_live_recv(viewer_connection
, data
, len
);
1022 BT_LOGI("Remote side has closed connection");
1023 goto error_free_data
;
1025 if (ret_len
== BT_SOCKET_ERROR
) {
1026 BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1027 goto error_free_data
;
1029 BT_ASSERT(ret_len
== len
);
1032 ret_len
= fwrite(data
, 1, len
, fp
);
1033 } while (ret_len
< 0 && errno
== EINTR
);
1035 BT_LOGE("Writing in the metadata fp");
1036 goto error_free_data
;
1038 BT_ASSERT(ret_len
== len
);
1051 * Assign the fields from a lttng_viewer_index to a packet_index.
1054 void lttng_index_to_packet_index(struct lttng_viewer_index
*lindex
,
1055 struct packet_index
*pindex
)
1060 pindex
->offset
= be64toh(lindex
->offset
);
1061 pindex
->packet_size
= be64toh(lindex
->packet_size
);
1062 pindex
->content_size
= be64toh(lindex
->content_size
);
1063 pindex
->ts_cycles
.timestamp_begin
= be64toh(lindex
->timestamp_begin
);
1064 pindex
->ts_cycles
.timestamp_end
= be64toh(lindex
->timestamp_end
);
1065 pindex
->events_discarded
= be64toh(lindex
->events_discarded
);
1069 enum bt_lttng_live_iterator_status
lttng_live_get_next_index(struct lttng_live_component
*lttng_live
,
1070 struct lttng_live_stream_iterator
*stream
,
1071 struct packet_index
*index
)
1073 struct lttng_viewer_cmd cmd
;
1074 struct lttng_viewer_get_next_index rq
;
1076 struct lttng_viewer_index rp
;
1077 uint32_t flags
, status
;
1078 enum bt_lttng_live_iterator_status retstatus
=
1079 BT_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1080 struct bt_live_viewer_connection
*viewer_connection
=
1081 lttng_live
->viewer_connection
;
1082 struct lttng_live_trace
*trace
= stream
->trace
;
1084 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEXT_INDEX
);
1085 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1086 cmd
.cmd_version
= htobe32(0);
1088 memset(&rq
, 0, sizeof(rq
));
1089 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1091 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
1092 if (ret_len
== BT_SOCKET_ERROR
) {
1093 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
1096 BT_ASSERT(ret_len
== sizeof(cmd
));
1098 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
1099 if (ret_len
== BT_SOCKET_ERROR
) {
1100 BT_LOGE("Error sending get_next_index request: %s", bt_socket_errormsg());
1103 BT_ASSERT(ret_len
== sizeof(rq
));
1105 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1107 BT_LOGI("Remote side has closed connection");
1110 if (ret_len
== BT_SOCKET_ERROR
) {
1111 BT_LOGE("Error receiving get_next_index response: %s", bt_socket_errormsg());
1114 BT_ASSERT(ret_len
== sizeof(rp
));
1116 flags
= be32toh(rp
.flags
);
1117 status
= be32toh(rp
.status
);
1120 case LTTNG_VIEWER_INDEX_INACTIVE
:
1122 uint64_t ctf_stream_class_id
;
1124 BT_LOGD("get_next_index: inactive");
1125 memset(index
, 0, sizeof(struct packet_index
));
1126 index
->ts_cycles
.timestamp_end
= be64toh(rp
.timestamp_end
);
1127 stream
->current_inactivity_timestamp
= index
->ts_cycles
.timestamp_end
;
1128 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1129 if (stream
->ctf_stream_class_id
!= -1ULL) {
1130 BT_ASSERT(stream
->ctf_stream_class_id
==
1131 ctf_stream_class_id
);
1133 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1135 stream
->state
= LTTNG_LIVE_STREAM_QUIESCENT
;
1138 case LTTNG_VIEWER_INDEX_OK
:
1140 uint64_t ctf_stream_class_id
;
1142 BT_LOGD("get_next_index: OK");
1143 lttng_index_to_packet_index(&rp
, index
);
1144 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1145 if (stream
->ctf_stream_class_id
!= -1ULL) {
1146 BT_ASSERT(stream
->ctf_stream_class_id
==
1147 ctf_stream_class_id
);
1149 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1152 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_DATA
;
1153 stream
->current_packet_end_timestamp
=
1154 index
->ts_cycles
.timestamp_end
;
1156 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1157 BT_LOGD("get_next_index: new metadata needed");
1158 trace
->new_metadata_needed
= true;
1160 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1161 BT_LOGD("get_next_index: new streams needed");
1162 lttng_live_need_new_streams(lttng_live
);
1166 case LTTNG_VIEWER_INDEX_RETRY
:
1167 BT_LOGD("get_next_index: retry");
1168 memset(index
, 0, sizeof(struct packet_index
));
1169 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1170 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1172 case LTTNG_VIEWER_INDEX_HUP
:
1173 BT_LOGD("get_next_index: stream hung up");
1174 memset(index
, 0, sizeof(struct packet_index
));
1175 index
->offset
= EOF
;
1176 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_END
;
1177 stream
->state
= LTTNG_LIVE_STREAM_EOF
;
1179 case LTTNG_VIEWER_INDEX_ERR
:
1180 BT_LOGE("get_next_index: error");
1181 memset(index
, 0, sizeof(struct packet_index
));
1182 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1185 BT_LOGE("get_next_index: unknown value");
1186 memset(index
, 0, sizeof(struct packet_index
));
1187 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1194 if (lttng_live_is_canceled(lttng_live
)) {
1195 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1197 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1203 enum bt_notif_iter_medium_status
lttng_live_get_stream_bytes(struct lttng_live_component
*lttng_live
,
1204 struct lttng_live_stream_iterator
*stream
, uint8_t *buf
, uint64_t offset
,
1205 uint64_t req_len
, uint64_t *recv_len
)
1207 enum bt_notif_iter_medium_status retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_OK
;
1208 struct lttng_viewer_cmd cmd
;
1209 struct lttng_viewer_get_packet rq
;
1210 struct lttng_viewer_trace_packet rp
;
1212 uint32_t flags
, status
;
1213 struct bt_live_viewer_connection
*viewer_connection
=
1214 lttng_live
->viewer_connection
;
1215 struct lttng_live_trace
*trace
= stream
->trace
;
1217 BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64
", req_len=%" PRIu64
,
1219 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_PACKET
);
1220 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1221 cmd
.cmd_version
= htobe32(0);
1223 memset(&rq
, 0, sizeof(rq
));
1224 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1225 rq
.offset
= htobe64(offset
);
1226 rq
.len
= htobe32(req_len
);
1228 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
1229 if (ret_len
== BT_SOCKET_ERROR
) {
1230 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
1233 BT_ASSERT(ret_len
== sizeof(cmd
));
1235 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
1236 if (ret_len
== BT_SOCKET_ERROR
) {
1237 BT_LOGE("Error sending get_data request: %s", bt_socket_errormsg());
1240 BT_ASSERT(ret_len
== sizeof(rq
));
1242 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1244 BT_LOGI("Remote side has closed connection");
1247 if (ret_len
== BT_SOCKET_ERROR
) {
1248 BT_LOGE("Error receiving get_data response: %s", bt_socket_errormsg());
1251 if (ret_len
!= sizeof(rp
)) {
1252 BT_LOGE("get_data_packet: expected %zu"
1253 ", received %zd", sizeof(rp
),
1258 flags
= be32toh(rp
.flags
);
1259 status
= be32toh(rp
.status
);
1262 case LTTNG_VIEWER_GET_PACKET_OK
:
1263 req_len
= be32toh(rp
.len
);
1264 BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64
"", req_len
);
1266 case LTTNG_VIEWER_GET_PACKET_RETRY
:
1267 /* Unimplemented by relay daemon */
1268 BT_LOGD("get_data_packet: retry");
1269 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1271 case LTTNG_VIEWER_GET_PACKET_ERR
:
1272 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1273 BT_LOGD("get_data_packet: new metadata needed, try again later");
1274 trace
->new_metadata_needed
= true;
1276 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1277 BT_LOGD("get_data_packet: new streams needed, try again later");
1278 lttng_live_need_new_streams(lttng_live
);
1280 if (flags
& (LTTNG_VIEWER_FLAG_NEW_METADATA
1281 | LTTNG_VIEWER_FLAG_NEW_STREAM
)) {
1282 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1285 BT_LOGE("get_data_packet: error");
1287 case LTTNG_VIEWER_GET_PACKET_EOF
:
1288 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_EOF
;
1291 BT_LOGE("get_data_packet: unknown");
1299 ret_len
= lttng_live_recv(viewer_connection
, buf
, req_len
);
1301 BT_LOGI("Remote side has closed connection");
1304 if (ret_len
== BT_SOCKET_ERROR
) {
1305 BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1308 BT_ASSERT(ret_len
== req_len
);
1309 *recv_len
= ret_len
;
1314 if (lttng_live_is_canceled(lttng_live
)) {
1315 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1317 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_ERROR
;
1323 * Request new streams for a session.
1326 enum bt_lttng_live_iterator_status
lttng_live_get_new_streams(
1327 struct lttng_live_session
*session
)
1329 enum bt_lttng_live_iterator_status status
=
1330 BT_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1331 struct lttng_viewer_cmd cmd
;
1332 struct lttng_viewer_new_streams_request rq
;
1333 struct lttng_viewer_new_streams_response rp
;
1335 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
1336 struct bt_live_viewer_connection
*viewer_connection
=
1337 lttng_live
->viewer_connection
;
1338 uint32_t streams_count
;
1340 if (!session
->new_streams_needed
) {
1341 return BT_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1344 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEW_STREAMS
);
1345 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1346 cmd
.cmd_version
= htobe32(0);
1348 memset(&rq
, 0, sizeof(rq
));
1349 rq
.session_id
= htobe64(session
->id
);
1351 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
1352 if (ret_len
== BT_SOCKET_ERROR
) {
1353 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
1356 BT_ASSERT(ret_len
== sizeof(cmd
));
1358 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
1359 if (ret_len
== BT_SOCKET_ERROR
) {
1360 BT_LOGE("Error sending get_new_streams request: %s", bt_socket_errormsg());
1363 BT_ASSERT(ret_len
== sizeof(rq
));
1365 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1367 BT_LOGI("Remote side has closed connection");
1370 if (ret_len
== BT_SOCKET_ERROR
) {
1371 BT_LOGE("Error receiving get_new_streams response");
1374 BT_ASSERT(ret_len
== sizeof(rp
));
1376 streams_count
= be32toh(rp
.streams_count
);
1378 switch(be32toh(rp
.status
)) {
1379 case LTTNG_VIEWER_NEW_STREAMS_OK
:
1380 session
->new_streams_needed
= false;
1382 case LTTNG_VIEWER_NEW_STREAMS_NO_NEW
:
1383 session
->new_streams_needed
= false;
1385 case LTTNG_VIEWER_NEW_STREAMS_HUP
:
1386 session
->new_streams_needed
= false;
1387 session
->closed
= true;
1388 status
= BT_LTTNG_LIVE_ITERATOR_STATUS_END
;
1390 case LTTNG_VIEWER_NEW_STREAMS_ERR
:
1391 BT_LOGE("get_new_streams error");
1394 BT_LOGE("Unknown return code %u", be32toh(rp
.status
));
1398 if (receive_streams(session
, streams_count
)) {
1405 if (lttng_live_is_canceled(lttng_live
)) {
1406 status
= BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1408 status
= BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1414 struct bt_live_viewer_connection
*
1415 bt_live_viewer_connection_create(const char *url
,
1416 struct lttng_live_component
*lttng_live
)
1418 struct bt_live_viewer_connection
*viewer_connection
;
1420 viewer_connection
= g_new0(struct bt_live_viewer_connection
, 1);
1422 if (bt_socket_init() != 0) {
1426 bt_object_init(&viewer_connection
->obj
, connection_release
);
1427 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
1428 viewer_connection
->port
= -1;
1429 viewer_connection
->lttng_live
= lttng_live
;
1430 viewer_connection
->url
= g_string_new(url
);
1431 if (!viewer_connection
->url
) {
1435 BT_LOGD("Establishing connection to url \"%s\"...", url
);
1436 if (lttng_live_connect_viewer(viewer_connection
)) {
1439 BT_LOGD("Connection to url \"%s\" is established", url
);
1440 return viewer_connection
;
1443 BT_LOGW("Failure to establish connection to url \"%s\"", url
);
1445 g_free(viewer_connection
);
1450 void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection
*viewer_connection
)
1452 BT_LOGD("Closing connection to url \"%s\"", viewer_connection
->url
->str
);
1453 lttng_live_disconnect_viewer(viewer_connection
);
1454 g_string_free(viewer_connection
->url
, TRUE
);
1455 if (viewer_connection
->relay_hostname
) {
1456 g_string_free(viewer_connection
->relay_hostname
, TRUE
);
1458 if (viewer_connection
->target_hostname
) {
1459 g_string_free(viewer_connection
->target_hostname
, TRUE
);
1461 if (viewer_connection
->session_name
) {
1462 g_string_free(viewer_connection
->session_name
, TRUE
);
1464 g_free(viewer_connection
);