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 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 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 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 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(struct 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(struct bt_value
*results
,
292 const struct lttng_viewer_session
*session
,
295 enum bt_value_status ret
= BT_VALUE_STATUS_OK
;
296 struct bt_value
*map
= NULL
;
297 struct bt_value
*hostname
= NULL
;
298 struct bt_value
*session_name
= NULL
;
299 struct bt_value
*btval
= NULL
;
303 len
= bt_value_array_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 ret
= bt_value_string_get(hostname
, &hostname_str
);
328 if (ret
!= BT_VALUE_STATUS_OK
) {
331 ret
= bt_value_string_get(session_name
, &session_name_str
);
332 if (ret
!= BT_VALUE_STATUS_OK
) {
336 if (!strcmp(session
->hostname
, hostname_str
)
337 && !strcmp(session
->session_name
,
340 uint32_t streams
= be32toh(session
->streams
);
341 uint32_t clients
= be32toh(session
->clients
);
345 btval
= bt_value_map_get(map
, "stream-count");
347 ret
= BT_VALUE_STATUS_ERROR
;
350 ret
= bt_value_integer_get(btval
, &val
);
351 if (ret
!= BT_VALUE_STATUS_OK
) {
356 ret
= bt_value_integer_set(btval
, val
);
357 if (ret
!= BT_VALUE_STATUS_OK
) {
362 btval
= bt_value_map_get(map
, "client-count");
364 ret
= BT_VALUE_STATUS_ERROR
;
367 ret
= bt_value_integer_get(btval
, &val
);
368 if (ret
!= BT_VALUE_STATUS_OK
) {
372 val
= max_t(int64_t, clients
, val
);
373 ret
= bt_value_integer_set(btval
, val
);
374 if (ret
!= BT_VALUE_STATUS_OK
) {
381 BT_PUT(session_name
);
391 BT_PUT(session_name
);
398 enum bt_value_status
list_append_session(struct bt_value
*results
,
400 const struct lttng_viewer_session
*session
)
402 enum bt_value_status ret
= BT_VALUE_STATUS_OK
;
403 struct bt_value
*map
= NULL
;
408 * If the session already exists, add the stream count to it,
409 * and do max of client counts.
411 ret
= list_update_session(results
, session
, &found
);
412 if (ret
!= BT_VALUE_STATUS_OK
|| found
) {
416 map
= bt_value_map_create();
418 ret
= BT_VALUE_STATUS_ERROR
;
422 if (base_url
->len
< 1) {
423 ret
= BT_VALUE_STATUS_ERROR
;
430 url
= g_string_new(base_url
->str
);
431 g_string_append(url
, "/host/");
432 g_string_append(url
, session
->hostname
);
433 g_string_append_c(url
, '/');
434 g_string_append(url
, session
->session_name
);
436 ret
= bt_value_map_insert_string(map
, "url", url
->str
);
437 if (ret
!= BT_VALUE_STATUS_OK
) {
442 * key = "target-hostname",
445 ret
= bt_value_map_insert_string(map
, "target-hostname",
447 if (ret
!= BT_VALUE_STATUS_OK
) {
452 * key = "session-name",
455 ret
= bt_value_map_insert_string(map
, "session-name",
456 session
->session_name
);
457 if (ret
!= BT_VALUE_STATUS_OK
) {
466 uint32_t live_timer
= be32toh(session
->live_timer
);
468 ret
= bt_value_map_insert_integer(map
, "timer-us",
470 if (ret
!= BT_VALUE_STATUS_OK
) {
476 * key = "stream-count",
480 uint32_t streams
= be32toh(session
->streams
);
482 ret
= bt_value_map_insert_integer(map
, "stream-count",
484 if (ret
!= BT_VALUE_STATUS_OK
) {
491 * key = "client-count",
495 uint32_t clients
= be32toh(session
->clients
);
497 ret
= bt_value_map_insert_integer(map
, "client-count",
499 if (ret
!= BT_VALUE_STATUS_OK
) {
504 ret
= bt_value_array_append(results
, map
);
507 g_string_free(url
, TRUE
);
514 * Data structure returned:
525 * key = "target-hostname",
529 * key = "session-name",
537 * key = "stream-count",
541 * key = "client-count",
550 struct bt_value
*bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection
*viewer_connection
)
552 struct bt_value
*results
= NULL
;
553 struct lttng_viewer_cmd cmd
;
554 struct lttng_viewer_list_sessions list
;
555 uint32_t i
, sessions_count
;
558 if (lttng_live_handshake(viewer_connection
)) {
562 results
= bt_value_array_create();
564 BT_LOGE("Error creating array");
568 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
569 cmd
.data_size
= htobe64((uint64_t) 0);
570 cmd
.cmd_version
= htobe32(0);
572 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
573 if (ret_len
== BT_SOCKET_ERROR
) {
574 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
577 assert(ret_len
== sizeof(cmd
));
579 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
581 BT_LOGI("Remote side has closed connection");
584 if (ret_len
== BT_SOCKET_ERROR
) {
585 BT_LOGE("Error receiving session list: %s", bt_socket_errormsg());
588 assert(ret_len
== sizeof(list
));
590 sessions_count
= be32toh(list
.sessions_count
);
591 for (i
= 0; i
< sessions_count
; i
++) {
592 struct lttng_viewer_session lsession
;
594 ret_len
= lttng_live_recv(viewer_connection
,
595 &lsession
, sizeof(lsession
));
597 BT_LOGI("Remote side has closed connection");
600 if (ret_len
== BT_SOCKET_ERROR
) {
601 BT_LOGE("Error receiving session: %s", bt_socket_errormsg());
604 assert(ret_len
== sizeof(lsession
));
605 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
606 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
607 if (list_append_session(results
,
608 viewer_connection
->url
, &lsession
)
609 != BT_VALUE_STATUS_OK
) {
621 int lttng_live_query_session_ids(struct lttng_live_component
*lttng_live
)
623 struct lttng_viewer_cmd cmd
;
624 struct lttng_viewer_list_sessions list
;
625 struct lttng_viewer_session lsession
;
626 uint32_t i
, sessions_count
;
629 struct bt_live_viewer_connection
*viewer_connection
=
630 lttng_live
->viewer_connection
;
632 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
633 cmd
.data_size
= htobe64((uint64_t) 0);
634 cmd
.cmd_version
= htobe32(0);
636 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
637 if (ret_len
== BT_SOCKET_ERROR
) {
638 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
641 assert(ret_len
== sizeof(cmd
));
643 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
645 BT_LOGI("Remote side has closed connection");
648 if (ret_len
== BT_SOCKET_ERROR
) {
649 BT_LOGE("Error receiving session list: %s", bt_socket_errormsg());
652 assert(ret_len
== sizeof(list
));
654 sessions_count
= be32toh(list
.sessions_count
);
655 for (i
= 0; i
< sessions_count
; i
++) {
656 ret_len
= lttng_live_recv(viewer_connection
,
657 &lsession
, sizeof(lsession
));
659 BT_LOGI("Remote side has closed connection");
662 if (ret_len
== BT_SOCKET_ERROR
) {
663 BT_LOGE("Error receiving session: %s", bt_socket_errormsg());
666 assert(ret_len
== sizeof(lsession
));
667 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
668 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
669 session_id
= be64toh(lsession
.id
);
671 BT_LOGD("Adding session %" PRIu64
" hostname: %s session_name: %s",
672 session_id
, lsession
.hostname
, lsession
.session_name
);
674 if ((strncmp(lsession
.session_name
,
675 viewer_connection
->session_name
->str
,
676 LTTNG_VIEWER_NAME_MAX
) == 0) && (strncmp(lsession
.hostname
,
677 viewer_connection
->target_hostname
->str
,
678 LTTNG_VIEWER_HOST_NAME_MAX
) == 0)) {
679 if (lttng_live_add_session(lttng_live
, session_id
,
681 lsession
.session_name
)) {
690 BT_LOGE("Unable to query session ids");
695 int lttng_live_create_viewer_session(struct lttng_live_component
*lttng_live
)
697 struct lttng_viewer_cmd cmd
;
698 struct lttng_viewer_create_session_response resp
;
700 struct bt_live_viewer_connection
*viewer_connection
=
701 lttng_live
->viewer_connection
;
703 cmd
.cmd
= htobe32(LTTNG_VIEWER_CREATE_SESSION
);
704 cmd
.data_size
= htobe64((uint64_t) 0);
705 cmd
.cmd_version
= htobe32(0);
707 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
708 if (ret_len
== BT_SOCKET_ERROR
) {
709 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
712 assert(ret_len
== sizeof(cmd
));
714 ret_len
= lttng_live_recv(viewer_connection
, &resp
, sizeof(resp
));
716 BT_LOGI("Remote side has closed connection");
719 if (ret_len
== BT_SOCKET_ERROR
) {
720 BT_LOGE("Error receiving create session reply: %s", bt_socket_errormsg());
723 assert(ret_len
== sizeof(resp
));
725 if (be32toh(resp
.status
) != LTTNG_VIEWER_CREATE_SESSION_OK
) {
726 BT_LOGE("Error creating viewer session");
729 if (lttng_live_query_session_ids(lttng_live
)) {
740 int receive_streams(struct lttng_live_session
*session
,
741 uint32_t stream_count
)
745 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
746 struct bt_live_viewer_connection
*viewer_connection
=
747 lttng_live
->viewer_connection
;
749 BT_LOGD("Getting %" PRIu32
" new streams:", stream_count
);
750 for (i
= 0; i
< stream_count
; i
++) {
751 struct lttng_viewer_stream stream
;
752 struct lttng_live_stream_iterator
*live_stream
;
754 uint64_t ctf_trace_id
;
756 ret_len
= lttng_live_recv(viewer_connection
, &stream
, sizeof(stream
));
758 BT_LOGI("Remote side has closed connection");
761 if (ret_len
== BT_SOCKET_ERROR
) {
762 BT_LOGE("Error receiving stream");
765 assert(ret_len
== sizeof(stream
));
766 stream
.path_name
[LTTNG_VIEWER_PATH_MAX
- 1] = '\0';
767 stream
.channel_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
768 stream_id
= be64toh(stream
.id
);
769 ctf_trace_id
= be64toh(stream
.ctf_trace_id
);
771 if (stream
.metadata_flag
) {
772 BT_LOGD(" metadata stream %" PRIu64
" : %s/%s",
773 stream_id
, stream
.path_name
,
774 stream
.channel_name
);
775 if (lttng_live_metadata_create_stream(session
,
776 ctf_trace_id
, stream_id
,
778 BT_LOGE("Error creating metadata stream");
782 session
->lazy_stream_notif_init
= true;
784 BT_LOGD(" stream %" PRIu64
" : %s/%s",
785 stream_id
, stream
.path_name
,
786 stream
.channel_name
);
787 live_stream
= lttng_live_stream_iterator_create(session
,
788 ctf_trace_id
, stream_id
);
790 BT_LOGE("Error creating streamn");
802 int lttng_live_attach_session(struct lttng_live_session
*session
)
804 struct lttng_viewer_cmd cmd
;
805 struct lttng_viewer_attach_session_request rq
;
806 struct lttng_viewer_attach_session_response rp
;
808 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
809 struct bt_live_viewer_connection
*viewer_connection
=
810 lttng_live
->viewer_connection
;
811 uint64_t session_id
= session
->id
;
812 uint32_t streams_count
;
814 if (session
->attached
) {
818 cmd
.cmd
= htobe32(LTTNG_VIEWER_ATTACH_SESSION
);
819 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
820 cmd
.cmd_version
= htobe32(0);
822 memset(&rq
, 0, sizeof(rq
));
823 rq
.session_id
= htobe64(session_id
);
824 // TODO: add cmd line parameter to select seek beginning
825 // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
826 rq
.seek
= htobe32(LTTNG_VIEWER_SEEK_LAST
);
828 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
829 if (ret_len
== BT_SOCKET_ERROR
) {
830 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
833 assert(ret_len
== sizeof(cmd
));
835 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
836 if (ret_len
== BT_SOCKET_ERROR
) {
837 BT_LOGE("Error sending attach request: %s", bt_socket_errormsg());
840 assert(ret_len
== sizeof(rq
));
842 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
844 BT_LOGI("Remote side has closed connection");
847 if (ret_len
== BT_SOCKET_ERROR
) {
848 BT_LOGE("Error receiving attach response: %s", bt_socket_errormsg());
851 assert(ret_len
== sizeof(rp
));
853 streams_count
= be32toh(rp
.streams_count
);
854 switch(be32toh(rp
.status
)) {
855 case LTTNG_VIEWER_ATTACH_OK
:
857 case LTTNG_VIEWER_ATTACH_UNK
:
858 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
860 case LTTNG_VIEWER_ATTACH_ALREADY
:
861 BT_LOGW("There is already a viewer attached to this session");
863 case LTTNG_VIEWER_ATTACH_NOT_LIVE
:
864 BT_LOGW("Not a live session");
866 case LTTNG_VIEWER_ATTACH_SEEK_ERR
:
867 BT_LOGE("Wrong seek parameter");
870 BT_LOGE("Unknown attach return code %u", be32toh(rp
.status
));
874 /* We receive the initial list of streams. */
875 if (receive_streams(session
, streams_count
)) {
879 session
->attached
= true;
880 session
->new_streams_needed
= false;
889 int lttng_live_detach_session(struct lttng_live_session
*session
)
891 struct lttng_viewer_cmd cmd
;
892 struct lttng_viewer_detach_session_request rq
;
893 struct lttng_viewer_detach_session_response rp
;
895 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
896 struct bt_live_viewer_connection
*viewer_connection
=
897 lttng_live
->viewer_connection
;
898 uint64_t session_id
= session
->id
;
900 if (!session
->attached
) {
904 cmd
.cmd
= htobe32(LTTNG_VIEWER_DETACH_SESSION
);
905 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
906 cmd
.cmd_version
= htobe32(0);
908 memset(&rq
, 0, sizeof(rq
));
909 rq
.session_id
= htobe64(session_id
);
911 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
912 if (ret_len
== BT_SOCKET_ERROR
) {
913 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
916 assert(ret_len
== sizeof(cmd
));
918 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
919 if (ret_len
== BT_SOCKET_ERROR
) {
920 BT_LOGE("Error sending detach request: %s", bt_socket_errormsg());
923 assert(ret_len
== sizeof(rq
));
925 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
927 BT_LOGI("Remote side has closed connection");
930 if (ret_len
== BT_SOCKET_ERROR
) {
931 BT_LOGE("Error receiving detach response: %s", bt_socket_errormsg());
934 assert(ret_len
== sizeof(rp
));
936 switch(be32toh(rp
.status
)) {
937 case LTTNG_VIEWER_DETACH_SESSION_OK
:
939 case LTTNG_VIEWER_DETACH_SESSION_UNK
:
940 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
942 case LTTNG_VIEWER_DETACH_SESSION_ERR
:
943 BT_LOGW("Error detaching session id %" PRIu64
"", session_id
);
946 BT_LOGE("Unknown detach return code %u", be32toh(rp
.status
));
950 session
->attached
= false;
959 ssize_t
lttng_live_get_one_metadata_packet(struct lttng_live_trace
*trace
,
964 struct lttng_viewer_cmd cmd
;
965 struct lttng_viewer_get_metadata rq
;
966 struct lttng_viewer_metadata_packet rp
;
969 struct lttng_live_session
*session
= trace
->session
;
970 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
971 struct lttng_live_metadata
*metadata
= trace
->metadata
;
972 struct bt_live_viewer_connection
*viewer_connection
=
973 lttng_live
->viewer_connection
;
975 rq
.stream_id
= htobe64(metadata
->stream_id
);
976 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_METADATA
);
977 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
978 cmd
.cmd_version
= htobe32(0);
980 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
981 if (ret_len
== BT_SOCKET_ERROR
) {
982 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
985 assert(ret_len
== sizeof(cmd
));
987 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
988 if (ret_len
== BT_SOCKET_ERROR
) {
989 BT_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg());
992 assert(ret_len
== sizeof(rq
));
994 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
996 BT_LOGI("Remote side has closed connection");
999 if (ret_len
== BT_SOCKET_ERROR
) {
1000 BT_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg());
1003 assert(ret_len
== sizeof(rp
));
1005 switch (be32toh(rp
.status
)) {
1006 case LTTNG_VIEWER_METADATA_OK
:
1007 BT_LOGD("get_metadata : OK");
1009 case LTTNG_VIEWER_NO_NEW_METADATA
:
1010 BT_LOGD("get_metadata : NO NEW");
1013 case LTTNG_VIEWER_METADATA_ERR
:
1014 BT_LOGD("get_metadata : ERR");
1017 BT_LOGD("get_metadata : UNKNOWN");
1021 len
= be64toh(rp
.len
);
1022 BT_LOGD("Writing %" PRIu64
" bytes to metadata", len
);
1027 data
= zmalloc(len
);
1029 BT_LOGE("relay data zmalloc: %s", strerror(errno
));
1032 ret_len
= lttng_live_recv(viewer_connection
, data
, len
);
1034 BT_LOGI("Remote side has closed connection");
1035 goto error_free_data
;
1037 if (ret_len
== BT_SOCKET_ERROR
) {
1038 BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1039 goto error_free_data
;
1041 assert(ret_len
== len
);
1044 ret_len
= fwrite(data
, 1, len
, fp
);
1045 } while (ret_len
< 0 && errno
== EINTR
);
1047 BT_LOGE("Writing in the metadata fp");
1048 goto error_free_data
;
1050 assert(ret_len
== len
);
1063 * Assign the fields from a lttng_viewer_index to a packet_index.
1066 void lttng_index_to_packet_index(struct lttng_viewer_index
*lindex
,
1067 struct packet_index
*pindex
)
1072 pindex
->offset
= be64toh(lindex
->offset
);
1073 pindex
->packet_size
= be64toh(lindex
->packet_size
);
1074 pindex
->content_size
= be64toh(lindex
->content_size
);
1075 pindex
->ts_cycles
.timestamp_begin
= be64toh(lindex
->timestamp_begin
);
1076 pindex
->ts_cycles
.timestamp_end
= be64toh(lindex
->timestamp_end
);
1077 pindex
->events_discarded
= be64toh(lindex
->events_discarded
);
1081 enum bt_lttng_live_iterator_status
lttng_live_get_next_index(struct lttng_live_component
*lttng_live
,
1082 struct lttng_live_stream_iterator
*stream
,
1083 struct packet_index
*index
)
1085 struct lttng_viewer_cmd cmd
;
1086 struct lttng_viewer_get_next_index rq
;
1088 struct lttng_viewer_index rp
;
1089 uint32_t flags
, status
;
1090 enum bt_lttng_live_iterator_status retstatus
=
1091 BT_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1092 struct bt_live_viewer_connection
*viewer_connection
=
1093 lttng_live
->viewer_connection
;
1094 struct lttng_live_trace
*trace
= stream
->trace
;
1096 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEXT_INDEX
);
1097 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1098 cmd
.cmd_version
= htobe32(0);
1100 memset(&rq
, 0, sizeof(rq
));
1101 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1103 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
1104 if (ret_len
== BT_SOCKET_ERROR
) {
1105 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
1108 assert(ret_len
== sizeof(cmd
));
1110 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
1111 if (ret_len
== BT_SOCKET_ERROR
) {
1112 BT_LOGE("Error sending get_next_index request: %s", bt_socket_errormsg());
1115 assert(ret_len
== sizeof(rq
));
1117 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1119 BT_LOGI("Remote side has closed connection");
1122 if (ret_len
== BT_SOCKET_ERROR
) {
1123 BT_LOGE("Error receiving get_next_index response: %s", bt_socket_errormsg());
1126 assert(ret_len
== sizeof(rp
));
1128 flags
= be32toh(rp
.flags
);
1129 status
= be32toh(rp
.status
);
1132 case LTTNG_VIEWER_INDEX_INACTIVE
:
1134 uint64_t ctf_stream_class_id
;
1136 BT_LOGD("get_next_index: inactive");
1137 memset(index
, 0, sizeof(struct packet_index
));
1138 index
->ts_cycles
.timestamp_end
= be64toh(rp
.timestamp_end
);
1139 stream
->current_inactivity_timestamp
= index
->ts_cycles
.timestamp_end
;
1140 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1141 if (stream
->ctf_stream_class_id
!= -1ULL) {
1142 assert(stream
->ctf_stream_class_id
==
1143 ctf_stream_class_id
);
1145 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1147 stream
->state
= LTTNG_LIVE_STREAM_QUIESCENT
;
1150 case LTTNG_VIEWER_INDEX_OK
:
1152 uint64_t ctf_stream_class_id
;
1154 BT_LOGD("get_next_index: OK");
1155 lttng_index_to_packet_index(&rp
, index
);
1156 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1157 if (stream
->ctf_stream_class_id
!= -1ULL) {
1158 assert(stream
->ctf_stream_class_id
==
1159 ctf_stream_class_id
);
1161 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1164 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_DATA
;
1165 stream
->current_packet_end_timestamp
=
1166 index
->ts_cycles
.timestamp_end
;
1168 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1169 BT_LOGD("get_next_index: new metadata needed");
1170 trace
->new_metadata_needed
= true;
1172 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1173 BT_LOGD("get_next_index: new streams needed");
1174 lttng_live_need_new_streams(lttng_live
);
1178 case LTTNG_VIEWER_INDEX_RETRY
:
1179 BT_LOGD("get_next_index: retry");
1180 memset(index
, 0, sizeof(struct packet_index
));
1181 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1182 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1184 case LTTNG_VIEWER_INDEX_HUP
:
1185 BT_LOGD("get_next_index: stream hung up");
1186 memset(index
, 0, sizeof(struct packet_index
));
1187 index
->offset
= EOF
;
1188 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_END
;
1189 stream
->state
= LTTNG_LIVE_STREAM_EOF
;
1191 case LTTNG_VIEWER_INDEX_ERR
:
1192 BT_LOGE("get_next_index: error");
1193 memset(index
, 0, sizeof(struct packet_index
));
1194 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1197 BT_LOGE("get_next_index: unknown value");
1198 memset(index
, 0, sizeof(struct packet_index
));
1199 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1206 if (lttng_live_is_canceled(lttng_live
)) {
1207 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1209 retstatus
= BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1215 enum bt_notif_iter_medium_status
lttng_live_get_stream_bytes(struct lttng_live_component
*lttng_live
,
1216 struct lttng_live_stream_iterator
*stream
, uint8_t *buf
, uint64_t offset
,
1217 uint64_t req_len
, uint64_t *recv_len
)
1219 enum bt_notif_iter_medium_status retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_OK
;
1220 struct lttng_viewer_cmd cmd
;
1221 struct lttng_viewer_get_packet rq
;
1222 struct lttng_viewer_trace_packet rp
;
1224 uint32_t flags
, status
;
1225 struct bt_live_viewer_connection
*viewer_connection
=
1226 lttng_live
->viewer_connection
;
1227 struct lttng_live_trace
*trace
= stream
->trace
;
1229 BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64
", req_len=%" PRIu64
,
1231 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_PACKET
);
1232 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1233 cmd
.cmd_version
= htobe32(0);
1235 memset(&rq
, 0, sizeof(rq
));
1236 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1237 rq
.offset
= htobe64(offset
);
1238 rq
.len
= htobe32(req_len
);
1240 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
1241 if (ret_len
== BT_SOCKET_ERROR
) {
1242 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
1245 assert(ret_len
== sizeof(cmd
));
1247 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
1248 if (ret_len
== BT_SOCKET_ERROR
) {
1249 BT_LOGE("Error sending get_data request: %s", bt_socket_errormsg());
1252 assert(ret_len
== sizeof(rq
));
1254 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1256 BT_LOGI("Remote side has closed connection");
1259 if (ret_len
== BT_SOCKET_ERROR
) {
1260 BT_LOGE("Error receiving get_data response: %s", bt_socket_errormsg());
1263 if (ret_len
!= sizeof(rp
)) {
1264 BT_LOGE("get_data_packet: expected %zu"
1265 ", received %zd", sizeof(rp
),
1270 flags
= be32toh(rp
.flags
);
1271 status
= be32toh(rp
.status
);
1274 case LTTNG_VIEWER_GET_PACKET_OK
:
1275 req_len
= be32toh(rp
.len
);
1276 BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64
"", req_len
);
1278 case LTTNG_VIEWER_GET_PACKET_RETRY
:
1279 /* Unimplemented by relay daemon */
1280 BT_LOGD("get_data_packet: retry");
1281 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1283 case LTTNG_VIEWER_GET_PACKET_ERR
:
1284 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1285 BT_LOGD("get_data_packet: new metadata needed, try again later");
1286 trace
->new_metadata_needed
= true;
1288 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1289 BT_LOGD("get_data_packet: new streams needed, try again later");
1290 lttng_live_need_new_streams(lttng_live
);
1292 if (flags
& (LTTNG_VIEWER_FLAG_NEW_METADATA
1293 | LTTNG_VIEWER_FLAG_NEW_STREAM
)) {
1294 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1297 BT_LOGE("get_data_packet: error");
1299 case LTTNG_VIEWER_GET_PACKET_EOF
:
1300 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_EOF
;
1303 BT_LOGE("get_data_packet: unknown");
1311 ret_len
= lttng_live_recv(viewer_connection
, buf
, req_len
);
1313 BT_LOGI("Remote side has closed connection");
1316 if (ret_len
== BT_SOCKET_ERROR
) {
1317 BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1320 assert(ret_len
== req_len
);
1321 *recv_len
= ret_len
;
1326 if (lttng_live_is_canceled(lttng_live
)) {
1327 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1329 retstatus
= BT_NOTIF_ITER_MEDIUM_STATUS_ERROR
;
1335 * Request new streams for a session.
1338 enum bt_lttng_live_iterator_status
lttng_live_get_new_streams(
1339 struct lttng_live_session
*session
)
1341 enum bt_lttng_live_iterator_status status
=
1342 BT_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1343 struct lttng_viewer_cmd cmd
;
1344 struct lttng_viewer_new_streams_request rq
;
1345 struct lttng_viewer_new_streams_response rp
;
1347 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
1348 struct bt_live_viewer_connection
*viewer_connection
=
1349 lttng_live
->viewer_connection
;
1350 uint32_t streams_count
;
1352 if (!session
->new_streams_needed
) {
1353 return BT_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1356 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEW_STREAMS
);
1357 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1358 cmd
.cmd_version
= htobe32(0);
1360 memset(&rq
, 0, sizeof(rq
));
1361 rq
.session_id
= htobe64(session
->id
);
1363 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
1364 if (ret_len
== BT_SOCKET_ERROR
) {
1365 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
1368 assert(ret_len
== sizeof(cmd
));
1370 ret_len
= lttng_live_send(viewer_connection
, &rq
, sizeof(rq
));
1371 if (ret_len
== BT_SOCKET_ERROR
) {
1372 BT_LOGE("Error sending get_new_streams request: %s", bt_socket_errormsg());
1375 assert(ret_len
== sizeof(rq
));
1377 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1379 BT_LOGI("Remote side has closed connection");
1382 if (ret_len
== BT_SOCKET_ERROR
) {
1383 BT_LOGE("Error receiving get_new_streams response");
1386 assert(ret_len
== sizeof(rp
));
1388 streams_count
= be32toh(rp
.streams_count
);
1390 switch(be32toh(rp
.status
)) {
1391 case LTTNG_VIEWER_NEW_STREAMS_OK
:
1392 session
->new_streams_needed
= false;
1394 case LTTNG_VIEWER_NEW_STREAMS_NO_NEW
:
1395 session
->new_streams_needed
= false;
1397 case LTTNG_VIEWER_NEW_STREAMS_HUP
:
1398 session
->new_streams_needed
= false;
1399 session
->closed
= true;
1400 status
= BT_LTTNG_LIVE_ITERATOR_STATUS_END
;
1402 case LTTNG_VIEWER_NEW_STREAMS_ERR
:
1403 BT_LOGE("get_new_streams error");
1406 BT_LOGE("Unknown return code %u", be32toh(rp
.status
));
1410 if (receive_streams(session
, streams_count
)) {
1417 if (lttng_live_is_canceled(lttng_live
)) {
1418 status
= BT_LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1420 status
= BT_LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1426 struct bt_live_viewer_connection
*
1427 bt_live_viewer_connection_create(const char *url
,
1428 struct lttng_live_component
*lttng_live
)
1430 struct bt_live_viewer_connection
*viewer_connection
;
1432 viewer_connection
= g_new0(struct bt_live_viewer_connection
, 1);
1434 if (bt_socket_init() != 0) {
1438 bt_object_init(&viewer_connection
->obj
, connection_release
);
1439 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
1440 viewer_connection
->port
= -1;
1441 viewer_connection
->lttng_live
= lttng_live
;
1442 viewer_connection
->url
= g_string_new(url
);
1443 if (!viewer_connection
->url
) {
1447 BT_LOGD("Establishing connection to url \"%s\"...", url
);
1448 if (lttng_live_connect_viewer(viewer_connection
)) {
1451 BT_LOGD("Connection to url \"%s\" is established", url
);
1452 return viewer_connection
;
1455 BT_LOGW("Failure to establish connection to url \"%s\"", url
);
1457 g_free(viewer_connection
);
1462 void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection
*viewer_connection
)
1464 BT_LOGD("Closing connection to url \"%s\"", viewer_connection
->url
->str
);
1465 lttng_live_disconnect_viewer(viewer_connection
);
1466 g_string_free(viewer_connection
->url
, TRUE
);
1467 if (viewer_connection
->relay_hostname
) {
1468 g_string_free(viewer_connection
->relay_hostname
, TRUE
);
1470 if (viewer_connection
->target_hostname
) {
1471 g_string_free(viewer_connection
->target_hostname
, TRUE
);
1473 if (viewer_connection
->session_name
) {
1474 g_string_free(viewer_connection
->session_name
, TRUE
);
1476 g_free(viewer_connection
);