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
30 #include <sys/socket.h>
31 #include <sys/types.h>
32 #include <netinet/in.h>
37 #include <babeltrace/compat/send-internal.h>
38 #include <babeltrace/compiler-internal.h>
39 #include <babeltrace/common-internal.h>
41 #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-LIVE-VIEWER"
43 #include "lttng-live-internal.h"
44 #include "viewer-connection.h"
45 #include "lttng-viewer-abi.h"
46 #include "data-stream.h"
49 static ssize_t
lttng_live_recv(int fd
, void *buf
, size_t len
)
52 size_t copied
= 0, to_copy
= len
;
55 ret
= recv(fd
, buf
+ copied
, to_copy
, 0);
57 assert(ret
<= to_copy
);
61 } while ((ret
> 0 && to_copy
> 0)
62 || (ret
< 0 && errno
== EINTR
));
65 /* ret = 0 means orderly shutdown, ret < 0 is error. */
69 static ssize_t
lttng_live_send(int fd
, const void *buf
, size_t len
)
74 ret
= bt_send_nosigpipe(fd
, buf
, len
);
75 } while (ret
< 0 && errno
== EINTR
);
79 static int parse_url(struct bt_live_viewer_connection
*viewer_connection
)
81 char error_buf
[256] = { 0 };
82 struct bt_common_lttng_live_url_parts lttng_live_url_parts
= { 0 };
84 const char *path
= viewer_connection
->url
->str
;
90 lttng_live_url_parts
= bt_common_parse_lttng_live_url(path
,
91 error_buf
, sizeof(error_buf
));
92 if (!lttng_live_url_parts
.proto
) {
93 BT_LOGW("Invalid LTTng live URL format: %s", error_buf
);
97 viewer_connection
->relay_hostname
=
98 lttng_live_url_parts
.hostname
;
99 lttng_live_url_parts
.hostname
= NULL
;
101 if (lttng_live_url_parts
.port
>= 0) {
102 viewer_connection
->port
= lttng_live_url_parts
.port
;
104 viewer_connection
->port
= LTTNG_DEFAULT_NETWORK_VIEWER_PORT
;
107 viewer_connection
->target_hostname
=
108 lttng_live_url_parts
.target_hostname
;
109 lttng_live_url_parts
.target_hostname
= NULL
;
111 if (lttng_live_url_parts
.session_name
) {
112 viewer_connection
->session_name
=
113 lttng_live_url_parts
.session_name
;
114 lttng_live_url_parts
.session_name
= NULL
;
117 BT_LOGD("Connecting to hostname : %s, port : %d, "
118 "target hostname : %s, session name : %s, "
120 viewer_connection
->relay_hostname
->str
,
121 viewer_connection
->port
,
122 viewer_connection
->target_hostname
== NULL
?
123 "<none>" : viewer_connection
->target_hostname
->str
,
124 viewer_connection
->session_name
== NULL
?
125 "<none>" : viewer_connection
->session_name
->str
,
126 lttng_live_url_parts
.proto
->str
);
130 bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts
);
134 static int lttng_live_handshake(struct bt_live_viewer_connection
*viewer_connection
)
136 struct lttng_viewer_cmd cmd
;
137 struct lttng_viewer_connect connect
;
141 cmd
.cmd
= htobe32(LTTNG_VIEWER_CONNECT
);
142 cmd
.data_size
= htobe64((uint64_t) sizeof(connect
));
143 cmd
.cmd_version
= htobe32(0);
145 connect
.viewer_session_id
= -1ULL; /* will be set on recv */
146 connect
.major
= htobe32(LTTNG_LIVE_MAJOR
);
147 connect
.minor
= htobe32(LTTNG_LIVE_MINOR
);
148 connect
.type
= htobe32(LTTNG_VIEWER_CLIENT_COMMAND
);
150 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
152 BT_LOGE("Error sending cmd: %s", strerror(errno
));
155 assert(ret_len
== sizeof(cmd
));
157 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &connect
, sizeof(connect
));
159 BT_LOGE("Error sending version: %s", strerror(errno
));
162 assert(ret_len
== sizeof(connect
));
164 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &connect
, sizeof(connect
));
166 BT_LOGI("Remote side has closed connection");
170 BT_LOGE("Error receiving version: %s", strerror(errno
));
173 assert(ret_len
== sizeof(connect
));
175 BT_LOGD("Received viewer session ID : %" PRIu64
,
176 be64toh(connect
.viewer_session_id
));
177 BT_LOGD("Relayd version : %u.%u", be32toh(connect
.major
),
178 be32toh(connect
.minor
));
180 if (LTTNG_LIVE_MAJOR
!= be32toh(connect
.major
)) {
181 BT_LOGE("Incompatible lttng-relayd protocol");
184 /* Use the smallest protocol version implemented. */
185 if (LTTNG_LIVE_MINOR
> be32toh(connect
.minor
)) {
186 viewer_connection
->minor
= be32toh(connect
.minor
);
188 viewer_connection
->minor
= LTTNG_LIVE_MINOR
;
190 viewer_connection
->major
= LTTNG_LIVE_MAJOR
;
195 BT_LOGE("Unable to establish connection");
199 static int lttng_live_connect_viewer(struct bt_live_viewer_connection
*viewer_connection
)
201 struct hostent
*host
;
202 struct sockaddr_in server_addr
;
205 if (parse_url(viewer_connection
)) {
209 host
= gethostbyname(viewer_connection
->relay_hostname
->str
);
211 BT_LOGE("Cannot lookup hostname %s",
212 viewer_connection
->relay_hostname
->str
);
216 if ((viewer_connection
->control_sock
= socket(AF_INET
, SOCK_STREAM
, 0)) == -1) {
217 BT_LOGE("Socket creation failed: %s", strerror(errno
));
221 server_addr
.sin_family
= AF_INET
;
222 server_addr
.sin_port
= htons(viewer_connection
->port
);
223 server_addr
.sin_addr
= *((struct in_addr
*) host
->h_addr
);
224 memset(&(server_addr
.sin_zero
), 0, 8);
226 if (connect(viewer_connection
->control_sock
, (struct sockaddr
*) &server_addr
,
227 sizeof(struct sockaddr
)) == -1) {
228 BT_LOGE("Connection failed: %s", strerror(errno
));
231 if (lttng_live_handshake(viewer_connection
)) {
240 if (viewer_connection
->control_sock
>= 0) {
241 if (close(viewer_connection
->control_sock
)) {
242 BT_LOGE("Close: %s", strerror(errno
));
245 viewer_connection
->control_sock
= -1;
249 static void lttng_live_disconnect_viewer(struct bt_live_viewer_connection
*viewer_connection
)
251 if (viewer_connection
->control_sock
< 0) {
254 if (close(viewer_connection
->control_sock
)) {
255 BT_LOGE("Close: %s", strerror(errno
));
256 viewer_connection
->control_sock
= -1;
260 static void connection_release(struct bt_object
*obj
)
262 struct bt_live_viewer_connection
*conn
=
263 container_of(obj
, struct bt_live_viewer_connection
, obj
);
265 bt_live_viewer_connection_destroy(conn
);
269 enum bt_value_status
list_update_session(struct bt_value
*results
,
270 const struct lttng_viewer_session
*session
,
273 enum bt_value_status ret
= BT_VALUE_STATUS_OK
;
274 struct bt_value
*map
= NULL
;
275 struct bt_value
*hostname
= NULL
;
276 struct bt_value
*session_name
= NULL
;
277 struct bt_value
*btval
= NULL
;
281 len
= bt_value_array_size(results
);
283 ret
= BT_VALUE_STATUS_ERROR
;
286 for (i
= 0; i
< len
; i
++) {
287 const char *hostname_str
= NULL
;
288 const char *session_name_str
= NULL
;
290 map
= bt_value_array_get(results
, (size_t) i
);
292 ret
= BT_VALUE_STATUS_ERROR
;
295 hostname
= bt_value_map_get(map
, "target-hostname");
297 ret
= BT_VALUE_STATUS_ERROR
;
300 session_name
= bt_value_map_get(map
, "session-name");
302 ret
= BT_VALUE_STATUS_ERROR
;
305 ret
= bt_value_string_get(hostname
, &hostname_str
);
306 if (ret
!= BT_VALUE_STATUS_OK
) {
309 ret
= bt_value_string_get(session_name
, &session_name_str
);
310 if (ret
!= BT_VALUE_STATUS_OK
) {
314 if (!strcmp(session
->hostname
, hostname_str
)
315 && !strcmp(session
->session_name
,
318 uint32_t streams
= be32toh(session
->streams
);
319 uint32_t clients
= be32toh(session
->clients
);
323 btval
= bt_value_map_get(map
, "stream-count");
325 ret
= BT_VALUE_STATUS_ERROR
;
328 ret
= bt_value_integer_get(btval
, &val
);
329 if (ret
!= BT_VALUE_STATUS_OK
) {
334 ret
= bt_value_integer_set(btval
, val
);
335 if (ret
!= BT_VALUE_STATUS_OK
) {
340 btval
= bt_value_map_get(map
, "client-count");
342 ret
= BT_VALUE_STATUS_ERROR
;
345 ret
= bt_value_integer_get(btval
, &val
);
346 if (ret
!= BT_VALUE_STATUS_OK
) {
350 val
= max_t(int64_t, clients
, val
);
351 ret
= bt_value_integer_set(btval
, val
);
352 if (ret
!= BT_VALUE_STATUS_OK
) {
359 BT_PUT(session_name
);
369 BT_PUT(session_name
);
376 enum bt_value_status
list_append_session(struct bt_value
*results
,
378 const struct lttng_viewer_session
*session
)
380 enum bt_value_status ret
= BT_VALUE_STATUS_OK
;
381 struct bt_value
*map
= NULL
;
386 * If the session already exists, add the stream count to it,
387 * and do max of client counts.
389 ret
= list_update_session(results
, session
, &found
);
390 if (ret
!= BT_VALUE_STATUS_OK
|| found
) {
394 map
= bt_value_map_create();
396 ret
= BT_VALUE_STATUS_ERROR
;
400 if (base_url
->len
< 1) {
401 ret
= BT_VALUE_STATUS_ERROR
;
408 url
= g_string_new(base_url
->str
);
409 g_string_append(url
, "/host/");
410 g_string_append(url
, session
->hostname
);
411 g_string_append_c(url
, '/');
412 g_string_append(url
, session
->session_name
);
414 ret
= bt_value_map_insert_string(map
, "url", url
->str
);
415 if (ret
!= BT_VALUE_STATUS_OK
) {
420 * key = "target-hostname",
423 ret
= bt_value_map_insert_string(map
, "target-hostname",
425 if (ret
!= BT_VALUE_STATUS_OK
) {
430 * key = "session-name",
433 ret
= bt_value_map_insert_string(map
, "session-name",
434 session
->session_name
);
435 if (ret
!= BT_VALUE_STATUS_OK
) {
444 uint32_t live_timer
= be32toh(session
->live_timer
);
446 ret
= bt_value_map_insert_integer(map
, "timer-us",
448 if (ret
!= BT_VALUE_STATUS_OK
) {
454 * key = "stream-count",
458 uint32_t streams
= be32toh(session
->streams
);
460 ret
= bt_value_map_insert_integer(map
, "stream-count",
462 if (ret
!= BT_VALUE_STATUS_OK
) {
469 * key = "client-count",
473 uint32_t clients
= be32toh(session
->clients
);
475 ret
= bt_value_map_insert_integer(map
, "client-count",
477 if (ret
!= BT_VALUE_STATUS_OK
) {
482 ret
= bt_value_array_append(results
, map
);
485 g_string_free(url
, TRUE
);
492 * Data structure returned:
503 * key = "target-hostname",
507 * key = "session-name",
515 * key = "stream-count",
519 * key = "client-count",
528 struct bt_value
*bt_live_viewer_connection_list_sessions(struct bt_live_viewer_connection
*viewer_connection
)
530 struct bt_value
*results
= NULL
;
531 struct lttng_viewer_cmd cmd
;
532 struct lttng_viewer_list_sessions list
;
533 uint32_t i
, sessions_count
;
536 if (lttng_live_handshake(viewer_connection
)) {
540 results
= bt_value_array_create();
542 BT_LOGE("Error creating array");
546 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
547 cmd
.data_size
= htobe64((uint64_t) 0);
548 cmd
.cmd_version
= htobe32(0);
550 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
552 BT_LOGE("Error sending cmd: %s", strerror(errno
));
555 assert(ret_len
== sizeof(cmd
));
557 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &list
, sizeof(list
));
559 BT_LOGI("Remote side has closed connection");
563 BT_LOGE("Error receiving session list: %s", strerror(errno
));
566 assert(ret_len
== sizeof(list
));
568 sessions_count
= be32toh(list
.sessions_count
);
569 for (i
= 0; i
< sessions_count
; i
++) {
570 struct lttng_viewer_session lsession
;
572 ret_len
= lttng_live_recv(viewer_connection
->control_sock
,
573 &lsession
, sizeof(lsession
));
575 BT_LOGI("Remote side has closed connection");
579 BT_LOGE("Error receiving session: %s", strerror(errno
));
582 assert(ret_len
== sizeof(lsession
));
583 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
584 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
585 if (list_append_session(results
,
586 viewer_connection
->url
, &lsession
)
587 != BT_VALUE_STATUS_OK
) {
599 int lttng_live_query_session_ids(struct lttng_live_component
*lttng_live
)
601 struct lttng_viewer_cmd cmd
;
602 struct lttng_viewer_list_sessions list
;
603 struct lttng_viewer_session lsession
;
604 uint32_t i
, sessions_count
;
607 struct bt_live_viewer_connection
*viewer_connection
=
608 lttng_live
->viewer_connection
;
610 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
611 cmd
.data_size
= htobe64((uint64_t) 0);
612 cmd
.cmd_version
= htobe32(0);
614 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
616 BT_LOGE("Error sending cmd: %s", strerror(errno
));
619 assert(ret_len
== sizeof(cmd
));
621 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &list
, sizeof(list
));
623 BT_LOGI("Remote side has closed connection");
627 BT_LOGE("Error receiving session list: %s", strerror(errno
));
630 assert(ret_len
== sizeof(list
));
632 sessions_count
= be32toh(list
.sessions_count
);
633 for (i
= 0; i
< sessions_count
; i
++) {
634 ret_len
= lttng_live_recv(viewer_connection
->control_sock
,
635 &lsession
, sizeof(lsession
));
637 BT_LOGI("Remote side has closed connection");
641 BT_LOGE("Error receiving session: %s", strerror(errno
));
644 assert(ret_len
== sizeof(lsession
));
645 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
646 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
647 session_id
= be64toh(lsession
.id
);
649 if ((strncmp(lsession
.session_name
,
650 viewer_connection
->session_name
->str
,
651 MAXNAMLEN
) == 0) && (strncmp(lsession
.hostname
,
652 viewer_connection
->target_hostname
->str
,
654 if (lttng_live_add_session(lttng_live
, session_id
)) {
663 BT_LOGE("Unable to query session ids");
668 int lttng_live_create_viewer_session(struct lttng_live_component
*lttng_live
)
670 struct lttng_viewer_cmd cmd
;
671 struct lttng_viewer_create_session_response resp
;
673 struct bt_live_viewer_connection
*viewer_connection
=
674 lttng_live
->viewer_connection
;
676 cmd
.cmd
= htobe32(LTTNG_VIEWER_CREATE_SESSION
);
677 cmd
.data_size
= htobe64((uint64_t) 0);
678 cmd
.cmd_version
= htobe32(0);
680 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
682 BT_LOGE("Error sending cmd: %s", strerror(errno
));
685 assert(ret_len
== sizeof(cmd
));
687 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &resp
, sizeof(resp
));
689 BT_LOGI("Remote side has closed connection");
693 BT_LOGE("Error receiving create session reply: %s", strerror(errno
));
696 assert(ret_len
== sizeof(resp
));
698 if (be32toh(resp
.status
) != LTTNG_VIEWER_CREATE_SESSION_OK
) {
699 BT_LOGE("Error creating viewer session");
702 if (lttng_live_query_session_ids(lttng_live
)) {
713 int receive_streams(struct lttng_live_session
*session
,
714 uint32_t stream_count
)
718 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
719 struct bt_live_viewer_connection
*viewer_connection
=
720 lttng_live
->viewer_connection
;
722 BT_LOGD("Getting %" PRIu32
" new streams:", stream_count
);
723 for (i
= 0; i
< stream_count
; i
++) {
724 struct lttng_viewer_stream stream
;
725 struct lttng_live_stream_iterator
*live_stream
;
727 uint64_t ctf_trace_id
;
729 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &stream
, sizeof(stream
));
731 BT_LOGI("Remote side has closed connection");
735 BT_LOGE("Error receiving stream");
738 assert(ret_len
== sizeof(stream
));
739 stream
.path_name
[LTTNG_VIEWER_PATH_MAX
- 1] = '\0';
740 stream
.channel_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
741 stream_id
= be64toh(stream
.id
);
742 ctf_trace_id
= be64toh(stream
.ctf_trace_id
);
744 if (stream
.metadata_flag
) {
745 BT_LOGD(" metadata stream %" PRIu64
" : %s/%s",
746 stream_id
, stream
.path_name
,
747 stream
.channel_name
);
748 if (lttng_live_metadata_create_stream(session
,
749 ctf_trace_id
, stream_id
)) {
750 BT_LOGE("Error creating metadata stream");
754 session
->lazy_stream_notif_init
= true;
756 BT_LOGD(" stream %" PRIu64
" : %s/%s",
757 stream_id
, stream
.path_name
,
758 stream
.channel_name
);
759 live_stream
= lttng_live_stream_iterator_create(session
,
760 ctf_trace_id
, stream_id
);
762 BT_LOGE("Error creating streamn");
774 int lttng_live_attach_session(struct lttng_live_session
*session
)
776 struct lttng_viewer_cmd cmd
;
777 struct lttng_viewer_attach_session_request rq
;
778 struct lttng_viewer_attach_session_response rp
;
780 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
781 struct bt_live_viewer_connection
*viewer_connection
=
782 lttng_live
->viewer_connection
;
783 uint64_t session_id
= session
->id
;
784 uint32_t streams_count
;
786 if (session
->attached
) {
790 cmd
.cmd
= htobe32(LTTNG_VIEWER_ATTACH_SESSION
);
791 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
792 cmd
.cmd_version
= htobe32(0);
794 memset(&rq
, 0, sizeof(rq
));
795 rq
.session_id
= htobe64(session_id
);
796 // TODO: add cmd line parameter to select seek beginning
797 // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
798 rq
.seek
= htobe32(LTTNG_VIEWER_SEEK_LAST
);
800 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
802 BT_LOGE("Error sending cmd: %s", strerror(errno
));
805 assert(ret_len
== sizeof(cmd
));
807 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &rq
, sizeof(rq
));
809 BT_LOGE("Error sending attach request: %s", strerror(errno
));
812 assert(ret_len
== sizeof(rq
));
814 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &rp
, sizeof(rp
));
816 BT_LOGI("Remote side has closed connection");
820 BT_LOGE("Error receiving attach response: %s", strerror(errno
));
823 assert(ret_len
== sizeof(rp
));
825 streams_count
= be32toh(rp
.streams_count
);
826 switch(be32toh(rp
.status
)) {
827 case LTTNG_VIEWER_ATTACH_OK
:
829 case LTTNG_VIEWER_ATTACH_UNK
:
830 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
832 case LTTNG_VIEWER_ATTACH_ALREADY
:
833 BT_LOGW("There is already a viewer attached to this session");
835 case LTTNG_VIEWER_ATTACH_NOT_LIVE
:
836 BT_LOGW("Not a live session");
838 case LTTNG_VIEWER_ATTACH_SEEK_ERR
:
839 BT_LOGE("Wrong seek parameter");
842 BT_LOGE("Unknown attach return code %u", be32toh(rp
.status
));
846 /* We receive the initial list of streams. */
847 if (receive_streams(session
, streams_count
)) {
851 session
->attached
= true;
852 session
->new_streams_needed
= false;
861 int lttng_live_detach_session(struct lttng_live_session
*session
)
863 struct lttng_viewer_cmd cmd
;
864 struct lttng_viewer_detach_session_request rq
;
865 struct lttng_viewer_detach_session_response rp
;
867 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
868 struct bt_live_viewer_connection
*viewer_connection
=
869 lttng_live
->viewer_connection
;
870 uint64_t session_id
= session
->id
;
872 if (!session
->attached
) {
876 cmd
.cmd
= htobe32(LTTNG_VIEWER_DETACH_SESSION
);
877 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
878 cmd
.cmd_version
= htobe32(0);
880 memset(&rq
, 0, sizeof(rq
));
881 rq
.session_id
= htobe64(session_id
);
883 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
885 BT_LOGE("Error sending cmd: %s", strerror(errno
));
888 assert(ret_len
== sizeof(cmd
));
890 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &rq
, sizeof(rq
));
892 BT_LOGE("Error sending detach request: %s", strerror(errno
));
895 assert(ret_len
== sizeof(rq
));
897 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &rp
, sizeof(rp
));
899 BT_LOGI("Remote side has closed connection");
903 BT_LOGE("Error receiving detach response: %s", strerror(errno
));
906 assert(ret_len
== sizeof(rp
));
908 switch(be32toh(rp
.status
)) {
909 case LTTNG_VIEWER_DETACH_SESSION_OK
:
911 case LTTNG_VIEWER_DETACH_SESSION_UNK
:
912 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
914 case LTTNG_VIEWER_DETACH_SESSION_ERR
:
915 BT_LOGW("Error detaching session id %" PRIu64
"", session_id
);
918 BT_LOGE("Unknown detach return code %u", be32toh(rp
.status
));
922 session
->attached
= false;
931 ssize_t
lttng_live_get_one_metadata_packet(struct lttng_live_trace
*trace
,
936 struct lttng_viewer_cmd cmd
;
937 struct lttng_viewer_get_metadata rq
;
938 struct lttng_viewer_metadata_packet rp
;
941 struct lttng_live_session
*session
= trace
->session
;
942 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
943 struct lttng_live_metadata
*metadata
= trace
->metadata
;
944 struct bt_live_viewer_connection
*viewer_connection
=
945 lttng_live
->viewer_connection
;
947 rq
.stream_id
= htobe64(metadata
->stream_id
);
948 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_METADATA
);
949 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
950 cmd
.cmd_version
= htobe32(0);
952 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
954 BT_LOGE("Error sending cmd: %s", strerror(errno
));
957 assert(ret_len
== sizeof(cmd
));
959 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &rq
, sizeof(rq
));
961 BT_LOGE("Error sending get_metadata request: %s", strerror(errno
));
964 assert(ret_len
== sizeof(rq
));
966 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &rp
, sizeof(rp
));
968 BT_LOGI("Remote side has closed connection");
972 BT_LOGE("Error receiving get_metadata response: %s", strerror(errno
));
975 assert(ret_len
== sizeof(rp
));
977 switch (be32toh(rp
.status
)) {
978 case LTTNG_VIEWER_METADATA_OK
:
979 BT_LOGD("get_metadata : OK");
981 case LTTNG_VIEWER_NO_NEW_METADATA
:
982 BT_LOGD("get_metadata : NO NEW");
985 case LTTNG_VIEWER_METADATA_ERR
:
986 BT_LOGD("get_metadata : ERR");
989 BT_LOGD("get_metadata : UNKNOWN");
993 len
= be64toh(rp
.len
);
994 BT_LOGD("Writing %" PRIu64
" bytes to metadata", len
);
1001 BT_LOGE("relay data zmalloc: %s", strerror(errno
));
1004 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, data
, len
);
1006 BT_LOGI("Remote side has closed connection");
1007 goto error_free_data
;
1010 BT_LOGE("Error receiving trace packet: %s", strerror(errno
));
1011 goto error_free_data
;
1013 assert(ret_len
== len
);
1016 ret_len
= fwrite(data
, 1, len
, fp
);
1017 } while (ret_len
< 0 && errno
== EINTR
);
1019 BT_LOGE("Writing in the metadata fp");
1020 goto error_free_data
;
1022 assert(ret_len
== len
);
1035 * Assign the fields from a lttng_viewer_index to a packet_index.
1038 void lttng_index_to_packet_index(struct lttng_viewer_index
*lindex
,
1039 struct packet_index
*pindex
)
1044 pindex
->offset
= be64toh(lindex
->offset
);
1045 pindex
->packet_size
= be64toh(lindex
->packet_size
);
1046 pindex
->content_size
= be64toh(lindex
->content_size
);
1047 pindex
->ts_cycles
.timestamp_begin
= be64toh(lindex
->timestamp_begin
);
1048 pindex
->ts_cycles
.timestamp_end
= be64toh(lindex
->timestamp_end
);
1049 pindex
->events_discarded
= be64toh(lindex
->events_discarded
);
1053 enum bt_ctf_lttng_live_iterator_status
lttng_live_get_next_index(struct lttng_live_component
*lttng_live
,
1054 struct lttng_live_stream_iterator
*stream
,
1055 struct packet_index
*index
)
1057 struct lttng_viewer_cmd cmd
;
1058 struct lttng_viewer_get_next_index rq
;
1060 struct lttng_viewer_index rp
;
1061 uint32_t flags
, status
;
1062 enum bt_ctf_lttng_live_iterator_status retstatus
=
1063 BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1064 struct bt_live_viewer_connection
*viewer_connection
=
1065 lttng_live
->viewer_connection
;
1066 struct lttng_live_trace
*trace
= stream
->trace
;
1068 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEXT_INDEX
);
1069 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1070 cmd
.cmd_version
= htobe32(0);
1072 memset(&rq
, 0, sizeof(rq
));
1073 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1075 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
1077 BT_LOGE("Error sending cmd: %s", strerror(errno
));
1080 assert(ret_len
== sizeof(cmd
));
1082 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &rq
, sizeof(rq
));
1084 BT_LOGE("Error sending get_next_index request: %s", strerror(errno
));
1087 assert(ret_len
== sizeof(rq
));
1089 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &rp
, sizeof(rp
));
1091 BT_LOGI("Remote side has closed connection");
1095 BT_LOGE("Error receiving get_next_index response: %s", strerror(errno
));
1098 assert(ret_len
== sizeof(rp
));
1100 flags
= be32toh(rp
.flags
);
1101 status
= be32toh(rp
.status
);
1104 case LTTNG_VIEWER_INDEX_INACTIVE
:
1106 uint64_t ctf_stream_class_id
;
1108 BT_LOGD("get_next_index: inactive");
1109 memset(index
, 0, sizeof(struct packet_index
));
1110 index
->ts_cycles
.timestamp_end
= be64toh(rp
.timestamp_end
);
1111 stream
->current_inactivity_timestamp
= index
->ts_cycles
.timestamp_end
;
1112 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1113 if (stream
->ctf_stream_class_id
!= -1ULL) {
1114 assert(stream
->ctf_stream_class_id
==
1115 ctf_stream_class_id
);
1117 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1119 stream
->state
= LTTNG_LIVE_STREAM_QUIESCENT
;
1122 case LTTNG_VIEWER_INDEX_OK
:
1124 uint64_t ctf_stream_class_id
;
1126 BT_LOGD("get_next_index: OK");
1127 lttng_index_to_packet_index(&rp
, index
);
1128 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1129 if (stream
->ctf_stream_class_id
!= -1ULL) {
1130 assert(stream
->ctf_stream_class_id
==
1131 ctf_stream_class_id
);
1133 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1136 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_DATA
;
1137 stream
->current_packet_end_timestamp
=
1138 index
->ts_cycles
.timestamp_end
;
1140 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1141 BT_LOGD("get_next_index: new metadata needed");
1142 trace
->new_metadata_needed
= true;
1144 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1145 BT_LOGD("get_next_index: new streams needed");
1146 lttng_live_need_new_streams(lttng_live
);
1150 case LTTNG_VIEWER_INDEX_RETRY
:
1151 BT_LOGD("get_next_index: retry");
1152 memset(index
, 0, sizeof(struct packet_index
));
1153 retstatus
= BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1154 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1156 case LTTNG_VIEWER_INDEX_HUP
:
1157 BT_LOGD("get_next_index: stream hung up");
1158 memset(index
, 0, sizeof(struct packet_index
));
1159 index
->offset
= EOF
;
1160 retstatus
= BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END
;
1161 stream
->state
= LTTNG_LIVE_STREAM_EOF
;
1163 case LTTNG_VIEWER_INDEX_ERR
:
1164 BT_LOGE("get_next_index: error");
1165 memset(index
, 0, sizeof(struct packet_index
));
1166 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1169 BT_LOGE("get_next_index: unknown value");
1170 memset(index
, 0, sizeof(struct packet_index
));
1171 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1178 retstatus
= BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1183 enum bt_ctf_notif_iter_medium_status
lttng_live_get_stream_bytes(struct lttng_live_component
*lttng_live
,
1184 struct lttng_live_stream_iterator
*stream
, uint8_t *buf
, uint64_t offset
,
1185 uint64_t req_len
, uint64_t *recv_len
)
1187 enum bt_ctf_notif_iter_medium_status retstatus
= BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK
;
1188 struct lttng_viewer_cmd cmd
;
1189 struct lttng_viewer_get_packet rq
;
1190 struct lttng_viewer_trace_packet rp
;
1192 uint32_t flags
, status
;
1193 struct bt_live_viewer_connection
*viewer_connection
=
1194 lttng_live
->viewer_connection
;
1195 struct lttng_live_trace
*trace
= stream
->trace
;
1197 BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64
", req_len=%" PRIu64
,
1199 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_PACKET
);
1200 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1201 cmd
.cmd_version
= htobe32(0);
1203 memset(&rq
, 0, sizeof(rq
));
1204 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1205 rq
.offset
= htobe64(offset
);
1206 rq
.len
= htobe32(req_len
);
1208 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
1210 BT_LOGE("Error sending cmd: %s", strerror(errno
));
1213 assert(ret_len
== sizeof(cmd
));
1215 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &rq
, sizeof(rq
));
1217 BT_LOGE("Error sending get_data request: %s", strerror(errno
));
1220 assert(ret_len
== sizeof(rq
));
1222 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &rp
, sizeof(rp
));
1224 BT_LOGI("Remote side has closed connection");
1228 BT_LOGE("Error receiving get_data response: %s", strerror(errno
));
1231 if (ret_len
!= sizeof(rp
)) {
1232 BT_LOGE("get_data_packet: expected %zu"
1233 ", received %zd", sizeof(rp
),
1238 flags
= be32toh(rp
.flags
);
1239 status
= be32toh(rp
.status
);
1242 case LTTNG_VIEWER_GET_PACKET_OK
:
1243 req_len
= be32toh(rp
.len
);
1244 BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64
"", req_len
);
1246 case LTTNG_VIEWER_GET_PACKET_RETRY
:
1247 /* Unimplemented by relay daemon */
1248 BT_LOGD("get_data_packet: retry");
1249 retstatus
= BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1251 case LTTNG_VIEWER_GET_PACKET_ERR
:
1252 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1253 BT_LOGD("get_data_packet: new metadata needed, try again later");
1254 trace
->new_metadata_needed
= true;
1256 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1257 BT_LOGD("get_data_packet: new streams needed, try again later");
1258 lttng_live_need_new_streams(lttng_live
);
1260 if (flags
& (LTTNG_VIEWER_FLAG_NEW_METADATA
1261 | LTTNG_VIEWER_FLAG_NEW_STREAM
)) {
1262 retstatus
= BT_CTF_NOTIF_ITER_MEDIUM_STATUS_AGAIN
;
1265 BT_LOGE("get_data_packet: error");
1267 case LTTNG_VIEWER_GET_PACKET_EOF
:
1268 retstatus
= BT_CTF_NOTIF_ITER_MEDIUM_STATUS_EOF
;
1271 BT_LOGE("get_data_packet: unknown");
1279 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, buf
, req_len
);
1281 BT_LOGI("Remote side has closed connection");
1285 BT_LOGE("Error receiving trace packet: %s", strerror(errno
));
1288 assert(ret_len
== req_len
);
1289 *recv_len
= ret_len
;
1294 retstatus
= BT_CTF_NOTIF_ITER_MEDIUM_STATUS_ERROR
;
1299 * Request new streams for a session.
1302 enum bt_ctf_lttng_live_iterator_status
lttng_live_get_new_streams(
1303 struct lttng_live_session
*session
)
1305 enum bt_ctf_lttng_live_iterator_status status
=
1306 BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1307 struct lttng_viewer_cmd cmd
;
1308 struct lttng_viewer_new_streams_request rq
;
1309 struct lttng_viewer_new_streams_response rp
;
1311 struct lttng_live_component
*lttng_live
= session
->lttng_live
;
1312 struct bt_live_viewer_connection
*viewer_connection
=
1313 lttng_live
->viewer_connection
;
1314 uint32_t streams_count
;
1316 if (!session
->new_streams_needed
) {
1317 return BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_OK
;
1320 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEW_STREAMS
);
1321 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1322 cmd
.cmd_version
= htobe32(0);
1324 memset(&rq
, 0, sizeof(rq
));
1325 rq
.session_id
= htobe64(session
->id
);
1327 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &cmd
, sizeof(cmd
));
1329 BT_LOGE("Error sending cmd: %s", strerror(errno
));
1332 assert(ret_len
== sizeof(cmd
));
1334 ret_len
= lttng_live_send(viewer_connection
->control_sock
, &rq
, sizeof(rq
));
1336 BT_LOGE("Error sending get_new_streams request: %s", strerror(errno
));
1339 assert(ret_len
== sizeof(rq
));
1341 ret_len
= lttng_live_recv(viewer_connection
->control_sock
, &rp
, sizeof(rp
));
1343 BT_LOGI("Remote side has closed connection");
1347 BT_LOGE("Error receiving get_new_streams response");
1350 assert(ret_len
== sizeof(rp
));
1352 streams_count
= be32toh(rp
.streams_count
);
1354 switch(be32toh(rp
.status
)) {
1355 case LTTNG_VIEWER_NEW_STREAMS_OK
:
1356 session
->new_streams_needed
= false;
1358 case LTTNG_VIEWER_NEW_STREAMS_NO_NEW
:
1359 session
->new_streams_needed
= false;
1361 case LTTNG_VIEWER_NEW_STREAMS_HUP
:
1362 session
->new_streams_needed
= false;
1363 session
->closed
= true;
1364 status
= BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_END
;
1366 case LTTNG_VIEWER_NEW_STREAMS_ERR
:
1367 BT_LOGE("get_new_streams error");
1370 BT_LOGE("Unknown return code %u", be32toh(rp
.status
));
1374 if (receive_streams(session
, streams_count
)) {
1381 status
= BT_CTF_LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1386 struct bt_live_viewer_connection
*
1387 bt_live_viewer_connection_create(const char *url
, FILE *error_fp
)
1389 struct bt_live_viewer_connection
*viewer_connection
;
1391 viewer_connection
= g_new0(struct bt_live_viewer_connection
, 1);
1393 bt_object_init(&viewer_connection
->obj
, connection_release
);
1394 viewer_connection
->control_sock
= -1;
1395 viewer_connection
->port
= -1;
1396 viewer_connection
->error_fp
= error_fp
;
1397 viewer_connection
->url
= g_string_new(url
);
1398 if (!viewer_connection
->url
) {
1402 BT_LOGD("Establishing connection to url \"%s\"...", url
);
1403 if (lttng_live_connect_viewer(viewer_connection
)) {
1406 BT_LOGD("Connection to url \"%s\" is established", url
);
1407 return viewer_connection
;
1410 BT_LOGW("Failure to establish connection to url \"%s\"", url
);
1412 g_free(viewer_connection
);
1417 void bt_live_viewer_connection_destroy(struct bt_live_viewer_connection
*viewer_connection
)
1419 BT_LOGD("Closing connection to url \"%s\"", viewer_connection
->url
->str
);
1420 lttng_live_disconnect_viewer(viewer_connection
);
1421 g_string_free(viewer_connection
->url
, TRUE
);
1422 if (viewer_connection
->relay_hostname
) {
1423 g_string_free(viewer_connection
->relay_hostname
, TRUE
);
1425 if (viewer_connection
->target_hostname
) {
1426 g_string_free(viewer_connection
->target_hostname
, TRUE
);
1428 if (viewer_connection
->session_name
) {
1429 g_string_free(viewer_connection
->session_name
, TRUE
);
1431 g_free(viewer_connection
);