2 * Copyright 2019 - Francis Deslauriers <francis.deslauriers@efficios.com>
3 * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level)
25 #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER"
26 #include "logging/log.h"
35 #include <sys/types.h>
38 #include "compat/socket.h"
39 #include "compat/endian.h"
40 #include "compat/compiler.h"
41 #include "common/common.h"
42 #include <babeltrace2/babeltrace.h>
44 #include "lttng-live.h"
45 #include "viewer-connection.h"
46 #include "lttng-viewer-abi.h"
47 #include "data-stream.h"
51 ssize_t
lttng_live_recv(struct live_viewer_connection
*viewer_connection
,
52 void *buf
, size_t len
)
55 size_t copied
= 0, to_copy
= len
;
56 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
57 viewer_connection
->lttng_live_msg_iter
;
58 BT_SOCKET sock
= viewer_connection
->control_sock
;
61 ret
= bt_socket_recv(sock
, buf
+ copied
, to_copy
, 0);
63 BT_ASSERT(ret
<= to_copy
);
67 if (ret
== BT_SOCKET_ERROR
&& bt_socket_interrupted()) {
68 if (!viewer_connection
->in_query
&&
69 lttng_live_graph_is_canceled(lttng_live_msg_iter
->lttng_live_comp
)) {
75 } while (ret
> 0 && to_copy
> 0);
78 /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */
83 ssize_t
lttng_live_send(struct live_viewer_connection
*viewer_connection
,
84 const void *buf
, size_t len
)
86 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
87 viewer_connection
->lttng_live_msg_iter
;
88 BT_SOCKET sock
= viewer_connection
->control_sock
;
92 ret
= bt_socket_send_nosigpipe(sock
, buf
, len
);
93 if (ret
== BT_SOCKET_ERROR
&& bt_socket_interrupted()) {
94 if (!viewer_connection
->in_query
&&
95 lttng_live_graph_is_canceled(lttng_live_msg_iter
->lttng_live_comp
)) {
108 int parse_url(struct live_viewer_connection
*viewer_connection
)
110 char error_buf
[256] = { 0 };
111 struct bt_common_lttng_live_url_parts lttng_live_url_parts
= { 0 };
113 const char *path
= viewer_connection
->url
->str
;
119 lttng_live_url_parts
= bt_common_parse_lttng_live_url(path
,
120 error_buf
, sizeof(error_buf
));
121 if (!lttng_live_url_parts
.proto
) {
122 BT_LOGW("Invalid LTTng live URL format: %s", error_buf
);
126 viewer_connection
->relay_hostname
=
127 lttng_live_url_parts
.hostname
;
128 lttng_live_url_parts
.hostname
= NULL
;
130 if (lttng_live_url_parts
.port
>= 0) {
131 viewer_connection
->port
= lttng_live_url_parts
.port
;
133 viewer_connection
->port
= LTTNG_DEFAULT_NETWORK_VIEWER_PORT
;
136 viewer_connection
->target_hostname
=
137 lttng_live_url_parts
.target_hostname
;
138 lttng_live_url_parts
.target_hostname
= NULL
;
140 if (lttng_live_url_parts
.session_name
) {
141 viewer_connection
->session_name
=
142 lttng_live_url_parts
.session_name
;
143 lttng_live_url_parts
.session_name
= NULL
;
146 BT_LOGI("Connecting to hostname : %s, port : %d, "
147 "target hostname : %s, session name : %s, "
149 viewer_connection
->relay_hostname
->str
,
150 viewer_connection
->port
,
151 viewer_connection
->target_hostname
== NULL
?
152 "<none>" : viewer_connection
->target_hostname
->str
,
153 viewer_connection
->session_name
== NULL
?
154 "<none>" : viewer_connection
->session_name
->str
,
155 lttng_live_url_parts
.proto
->str
);
159 bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts
);
164 int lttng_live_handshake(struct live_viewer_connection
*viewer_connection
)
166 struct lttng_viewer_cmd cmd
;
167 struct lttng_viewer_connect connect
;
168 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(connect
);
169 char cmd_buf
[cmd_buf_len
];
173 cmd
.cmd
= htobe32(LTTNG_VIEWER_CONNECT
);
174 cmd
.data_size
= htobe64((uint64_t) sizeof(connect
));
175 cmd
.cmd_version
= htobe32(0);
177 connect
.viewer_session_id
= -1ULL; /* will be set on recv */
178 connect
.major
= htobe32(LTTNG_LIVE_MAJOR
);
179 connect
.minor
= htobe32(LTTNG_LIVE_MINOR
);
180 connect
.type
= htobe32(LTTNG_VIEWER_CLIENT_COMMAND
);
183 * Merge the cmd and connection request to prevent a write-write
184 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
185 * second write to be performed quickly in presence of Nagle's algorithm
187 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
188 memcpy(cmd_buf
+ sizeof(cmd
), &connect
, sizeof(connect
));
189 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
190 if (ret_len
== BT_SOCKET_ERROR
) {
191 BT_LOGE("Error sending version: %s", bt_socket_errormsg());
195 BT_ASSERT(ret_len
== cmd_buf_len
);
197 ret_len
= lttng_live_recv(viewer_connection
, &connect
, sizeof(connect
));
199 BT_LOGI("Remote side has closed connection");
202 if (ret_len
== BT_SOCKET_ERROR
) {
203 BT_LOGE("Error receiving version: %s", bt_socket_errormsg());
206 BT_ASSERT(ret_len
== sizeof(connect
));
208 BT_LOGI("Received viewer session ID : %" PRIu64
,
209 (uint64_t) be64toh(connect
.viewer_session_id
));
210 BT_LOGI("Relayd version : %u.%u", be32toh(connect
.major
),
211 be32toh(connect
.minor
));
213 if (LTTNG_LIVE_MAJOR
!= be32toh(connect
.major
)) {
214 BT_LOGE("Incompatible lttng-relayd protocol");
217 /* Use the smallest protocol version implemented. */
218 if (LTTNG_LIVE_MINOR
> be32toh(connect
.minor
)) {
219 viewer_connection
->minor
= be32toh(connect
.minor
);
221 viewer_connection
->minor
= LTTNG_LIVE_MINOR
;
223 viewer_connection
->major
= LTTNG_LIVE_MAJOR
;
228 BT_LOGE("Unable to establish connection");
233 int lttng_live_connect_viewer(struct live_viewer_connection
*viewer_connection
)
235 struct hostent
*host
;
236 struct sockaddr_in server_addr
;
239 if (parse_url(viewer_connection
)) {
243 host
= gethostbyname(viewer_connection
->relay_hostname
->str
);
245 BT_LOGE("Cannot lookup hostname %s",
246 viewer_connection
->relay_hostname
->str
);
250 if ((viewer_connection
->control_sock
= socket(AF_INET
, SOCK_STREAM
, 0)) == BT_INVALID_SOCKET
) {
251 BT_LOGE("Socket creation failed: %s", bt_socket_errormsg());
255 server_addr
.sin_family
= AF_INET
;
256 server_addr
.sin_port
= htons(viewer_connection
->port
);
257 server_addr
.sin_addr
= *((struct in_addr
*) host
->h_addr
);
258 memset(&(server_addr
.sin_zero
), 0, 8);
260 if (connect(viewer_connection
->control_sock
, (struct sockaddr
*) &server_addr
,
261 sizeof(struct sockaddr
)) == BT_SOCKET_ERROR
) {
262 BT_LOGE("Connection failed: %s", bt_socket_errormsg());
265 if (lttng_live_handshake(viewer_connection
)) {
274 if (viewer_connection
->control_sock
!= BT_INVALID_SOCKET
) {
275 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
276 BT_LOGE("Close: %s", bt_socket_errormsg());
279 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
284 void lttng_live_disconnect_viewer(
285 struct live_viewer_connection
*viewer_connection
)
287 if (viewer_connection
->control_sock
== BT_INVALID_SOCKET
) {
290 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
291 BT_LOGE("Close: %s", bt_socket_errormsg());
292 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
297 void connection_release(bt_object
*obj
)
299 struct live_viewer_connection
*conn
=
300 container_of(obj
, struct live_viewer_connection
, obj
);
302 live_viewer_connection_destroy(conn
);
306 int list_update_session(bt_value
*results
,
307 const struct lttng_viewer_session
*session
,
308 bool *_found
, struct live_viewer_connection
*viewer_connection
)
311 bt_value
*map
= NULL
;
312 bt_value
*hostname
= NULL
;
313 bt_value
*session_name
= NULL
;
314 bt_value
*btval
= NULL
;
318 len
= bt_value_array_get_size(results
);
320 BT_LOGE_STR("Error getting size of array.");
324 for (i
= 0; i
< len
; i
++) {
325 const char *hostname_str
= NULL
;
326 const char *session_name_str
= NULL
;
328 map
= bt_value_array_borrow_element_by_index(results
, (size_t) i
);
330 BT_LOGE_STR("Error borrowing map.");
334 hostname
= bt_value_map_borrow_entry_value(map
, "target-hostname");
336 BT_LOGE_STR("Error borrowing \"target-hostname\" entry.");
340 session_name
= bt_value_map_borrow_entry_value(map
, "session-name");
342 BT_LOGE_STR("Error borrowing \"session-name\" entry.");
346 hostname_str
= bt_value_string_get(hostname
);
347 session_name_str
= bt_value_string_get(session_name
);
349 if (!strcmp(session
->hostname
, hostname_str
)
350 && !strcmp(session
->session_name
,
353 uint32_t streams
= be32toh(session
->streams
);
354 uint32_t clients
= be32toh(session
->clients
);
358 btval
= bt_value_map_borrow_entry_value(map
, "stream-count");
360 BT_LOGE_STR("Error borrowing \"stream-count\" entry.");
364 val
= bt_value_signed_integer_get(btval
);
367 bt_value_signed_integer_set(btval
, val
);
369 btval
= bt_value_map_borrow_entry_value(map
, "client-count");
371 BT_LOGE_STR("Error borrowing \"client-count\" entry.");
375 val
= bt_value_signed_integer_get(btval
);
377 val
= bt_max_t(int64_t, clients
, val
);
378 bt_value_signed_integer_set(btval
, val
);
391 int list_append_session(bt_value
*results
,
393 const struct lttng_viewer_session
*session
,
394 struct live_viewer_connection
*viewer_connection
)
397 bt_value_status ret_status
;
398 bt_value
*map
= NULL
;
403 * If the session already exists, add the stream count to it,
404 * and do max of client counts.
406 ret
= list_update_session(results
, session
, &found
, viewer_connection
);
411 map
= bt_value_map_create();
413 BT_LOGE_STR("Error creating map value.");
418 if (base_url
->len
< 1) {
419 BT_LOGE_STR("Error: base_url length smaller than 1.");
427 url
= g_string_new(base_url
->str
);
428 g_string_append(url
, "/host/");
429 g_string_append(url
, session
->hostname
);
430 g_string_append_c(url
, '/');
431 g_string_append(url
, session
->session_name
);
433 ret_status
= bt_value_map_insert_string_entry(map
, "url", url
->str
);
434 if (ret_status
!= BT_VALUE_STATUS_OK
) {
435 BT_LOGE_STR("Error inserting \"url\" entry.");
441 * key = "target-hostname",
444 ret_status
= bt_value_map_insert_string_entry(map
, "target-hostname",
446 if (ret_status
!= BT_VALUE_STATUS_OK
) {
447 BT_LOGE_STR("Error inserting \"target-hostname\" entry.");
453 * key = "session-name",
456 ret_status
= bt_value_map_insert_string_entry(map
, "session-name",
457 session
->session_name
);
458 if (ret_status
!= BT_VALUE_STATUS_OK
) {
459 BT_LOGE_STR("Error inserting \"session-name\" entry.");
469 uint32_t live_timer
= be32toh(session
->live_timer
);
471 ret_status
= bt_value_map_insert_signed_integer_entry(
472 map
, "timer-us", live_timer
);
473 if (ret_status
!= BT_VALUE_STATUS_OK
) {
474 BT_LOGE_STR("Error inserting \"timer-us\" entry.");
481 * key = "stream-count",
485 uint32_t streams
= be32toh(session
->streams
);
487 ret_status
= bt_value_map_insert_signed_integer_entry(map
,
488 "stream-count", streams
);
489 if (ret_status
!= BT_VALUE_STATUS_OK
) {
490 BT_LOGE_STR("Error inserting \"stream-count\" entry.");
497 * key = "client-count",
501 uint32_t clients
= be32toh(session
->clients
);
503 ret_status
= bt_value_map_insert_signed_integer_entry(map
,
504 "client-count", clients
);
505 if (ret_status
!= BT_VALUE_STATUS_OK
) {
506 BT_LOGE_STR("Error inserting \"client-count\" entry.");
512 ret_status
= bt_value_array_append_element(results
, map
);
513 if (ret_status
!= BT_VALUE_STATUS_OK
) {
514 BT_LOGE_STR("Error appending map to results.");
520 g_string_free(url
, true);
522 BT_VALUE_PUT_REF_AND_RESET(map
);
527 * Data structure returned:
538 * key = "target-hostname",
542 * key = "session-name",
550 * key = "stream-count",
554 * key = "client-count",
563 bt_query_status
live_viewer_connection_list_sessions(
564 struct live_viewer_connection
*viewer_connection
,
565 const bt_value
**user_result
)
567 bt_query_status status
= BT_QUERY_STATUS_OK
;
568 bt_value
*result
= NULL
;
569 struct lttng_viewer_cmd cmd
;
570 struct lttng_viewer_list_sessions list
;
571 uint32_t i
, sessions_count
;
574 if (lttng_live_handshake(viewer_connection
)) {
578 result
= bt_value_array_create();
580 BT_LOGE("Error creating array");
581 status
= BT_QUERY_STATUS_NOMEM
;
585 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
586 cmd
.data_size
= htobe64((uint64_t) 0);
587 cmd
.cmd_version
= htobe32(0);
589 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
590 if (ret_len
== BT_SOCKET_ERROR
) {
591 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
592 status
= BT_QUERY_STATUS_ERROR
;
595 BT_ASSERT(ret_len
== sizeof(cmd
));
597 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
599 BT_LOGI("Remote side has closed connection");
600 status
= BT_QUERY_STATUS_ERROR
;
603 if (ret_len
== BT_SOCKET_ERROR
) {
604 BT_LOGE("Error receiving session list: %s", bt_socket_errormsg());
605 status
= BT_QUERY_STATUS_ERROR
;
608 BT_ASSERT(ret_len
== sizeof(list
));
610 sessions_count
= be32toh(list
.sessions_count
);
611 for (i
= 0; i
< sessions_count
; i
++) {
612 struct lttng_viewer_session lsession
;
614 ret_len
= lttng_live_recv(viewer_connection
, &lsession
,
617 BT_LOGI("Remote side has closed connection");
618 status
= BT_QUERY_STATUS_ERROR
;
621 if (ret_len
== BT_SOCKET_ERROR
) {
622 BT_LOGE("Error receiving session: %s", bt_socket_errormsg());
623 status
= BT_QUERY_STATUS_ERROR
;
626 BT_ASSERT(ret_len
== sizeof(lsession
));
627 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
628 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
629 if (list_append_session(result
, viewer_connection
->url
,
630 &lsession
, viewer_connection
)) {
631 status
= BT_QUERY_STATUS_ERROR
;
636 *user_result
= result
;
639 BT_VALUE_PUT_REF_AND_RESET(result
);
645 int lttng_live_query_session_ids(struct lttng_live_msg_iter
*lttng_live_msg_iter
)
647 struct lttng_viewer_cmd cmd
;
648 struct lttng_viewer_list_sessions list
;
649 struct lttng_viewer_session lsession
;
650 uint32_t i
, sessions_count
;
653 struct live_viewer_connection
*viewer_connection
=
654 lttng_live_msg_iter
->viewer_connection
;
656 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
657 cmd
.data_size
= htobe64((uint64_t) 0);
658 cmd
.cmd_version
= htobe32(0);
660 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
661 if (ret_len
== BT_SOCKET_ERROR
) {
662 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
665 BT_ASSERT(ret_len
== sizeof(cmd
));
667 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
669 BT_LOGI("Remote side has closed connection");
672 if (ret_len
== BT_SOCKET_ERROR
) {
673 BT_LOGE("Error receiving session list: %s", bt_socket_errormsg());
676 BT_ASSERT(ret_len
== sizeof(list
));
678 sessions_count
= be32toh(list
.sessions_count
);
679 for (i
= 0; i
< sessions_count
; i
++) {
680 ret_len
= lttng_live_recv(viewer_connection
,
681 &lsession
, sizeof(lsession
));
683 BT_LOGI("Remote side has closed connection");
686 if (ret_len
== BT_SOCKET_ERROR
) {
687 BT_LOGE("Error receiving session: %s", bt_socket_errormsg());
690 BT_ASSERT(ret_len
== sizeof(lsession
));
691 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
692 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
693 session_id
= be64toh(lsession
.id
);
695 BT_LOGI("Adding session %" PRIu64
" hostname: %s session_name: %s",
696 session_id
, lsession
.hostname
, lsession
.session_name
);
698 if ((strncmp(lsession
.session_name
,
699 viewer_connection
->session_name
->str
,
700 LTTNG_VIEWER_NAME_MAX
) == 0) && (strncmp(lsession
.hostname
,
701 viewer_connection
->target_hostname
->str
,
702 LTTNG_VIEWER_HOST_NAME_MAX
) == 0)) {
703 if (lttng_live_add_session(lttng_live_msg_iter
, session_id
,
705 lsession
.session_name
)) {
714 BT_LOGE("Unable to query session ids");
719 int lttng_live_create_viewer_session(
720 struct lttng_live_msg_iter
*lttng_live_msg_iter
)
722 struct lttng_viewer_cmd cmd
;
723 struct lttng_viewer_create_session_response resp
;
725 struct live_viewer_connection
*viewer_connection
=
726 lttng_live_msg_iter
->viewer_connection
;
728 cmd
.cmd
= htobe32(LTTNG_VIEWER_CREATE_SESSION
);
729 cmd
.data_size
= htobe64((uint64_t) 0);
730 cmd
.cmd_version
= htobe32(0);
732 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
733 if (ret_len
== BT_SOCKET_ERROR
) {
734 BT_LOGE("Error sending cmd: %s", bt_socket_errormsg());
737 BT_ASSERT(ret_len
== sizeof(cmd
));
739 ret_len
= lttng_live_recv(viewer_connection
, &resp
, sizeof(resp
));
741 BT_LOGI("Remote side has closed connection");
744 if (ret_len
== BT_SOCKET_ERROR
) {
745 BT_LOGE("Error receiving create session reply: %s", bt_socket_errormsg());
748 BT_ASSERT(ret_len
== sizeof(resp
));
750 if (be32toh(resp
.status
) != LTTNG_VIEWER_CREATE_SESSION_OK
) {
751 BT_LOGE("Error creating viewer session");
754 if (lttng_live_query_session_ids(lttng_live_msg_iter
)) {
765 int receive_streams(struct lttng_live_session
*session
,
766 uint32_t stream_count
)
770 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
771 session
->lttng_live_msg_iter
;
772 struct live_viewer_connection
*viewer_connection
=
773 lttng_live_msg_iter
->viewer_connection
;
775 BT_LOGI("Getting %" PRIu32
" new streams:", stream_count
);
776 for (i
= 0; i
< stream_count
; i
++) {
777 struct lttng_viewer_stream stream
;
778 struct lttng_live_stream_iterator
*live_stream
;
780 uint64_t ctf_trace_id
;
782 ret_len
= lttng_live_recv(viewer_connection
, &stream
, sizeof(stream
));
784 BT_LOGI("Remote side has closed connection");
787 if (ret_len
== BT_SOCKET_ERROR
) {
788 BT_LOGE("Error receiving stream");
791 BT_ASSERT(ret_len
== sizeof(stream
));
792 stream
.path_name
[LTTNG_VIEWER_PATH_MAX
- 1] = '\0';
793 stream
.channel_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
794 stream_id
= be64toh(stream
.id
);
795 ctf_trace_id
= be64toh(stream
.ctf_trace_id
);
797 if (stream
.metadata_flag
) {
798 BT_LOGI(" metadata stream %" PRIu64
" : %s/%s",
799 stream_id
, stream
.path_name
,
800 stream
.channel_name
);
801 if (lttng_live_metadata_create_stream(session
,
802 ctf_trace_id
, stream_id
,
804 BT_LOGE("Error creating metadata stream");
808 session
->lazy_stream_msg_init
= true;
810 BT_LOGI(" stream %" PRIu64
" : %s/%s",
811 stream_id
, stream
.path_name
,
812 stream
.channel_name
);
813 live_stream
= lttng_live_stream_iterator_create(session
,
814 ctf_trace_id
, stream_id
);
816 BT_LOGE("Error creating streamn");
828 int lttng_live_attach_session(struct lttng_live_session
*session
)
830 struct lttng_viewer_cmd cmd
;
831 struct lttng_viewer_attach_session_request rq
;
832 struct lttng_viewer_attach_session_response rp
;
834 struct lttng_live_msg_iter
*lttng_live_msg_iter
= session
->lttng_live_msg_iter
;
835 struct live_viewer_connection
*viewer_connection
=
836 lttng_live_msg_iter
->viewer_connection
;
837 uint64_t session_id
= session
->id
;
838 uint32_t streams_count
;
839 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
840 char cmd_buf
[cmd_buf_len
];
842 cmd
.cmd
= htobe32(LTTNG_VIEWER_ATTACH_SESSION
);
843 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
844 cmd
.cmd_version
= htobe32(0);
846 memset(&rq
, 0, sizeof(rq
));
847 rq
.session_id
= htobe64(session_id
);
848 // TODO: add cmd line parameter to select seek beginning
849 // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
850 rq
.seek
= htobe32(LTTNG_VIEWER_SEEK_LAST
);
853 * Merge the cmd and connection request to prevent a write-write
854 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
855 * second write to be performed quickly in presence of Nagle's algorithm.
857 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
858 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
859 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
860 if (ret_len
== BT_SOCKET_ERROR
) {
861 BT_LOGE("Error sending attach request: %s", bt_socket_errormsg());
865 BT_ASSERT(ret_len
== cmd_buf_len
);
866 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
868 BT_LOGI("Remote side has closed connection");
871 if (ret_len
== BT_SOCKET_ERROR
) {
872 BT_LOGE("Error receiving attach response: %s", bt_socket_errormsg());
875 BT_ASSERT(ret_len
== sizeof(rp
));
877 streams_count
= be32toh(rp
.streams_count
);
878 switch(be32toh(rp
.status
)) {
879 case LTTNG_VIEWER_ATTACH_OK
:
881 case LTTNG_VIEWER_ATTACH_UNK
:
882 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
884 case LTTNG_VIEWER_ATTACH_ALREADY
:
885 BT_LOGW("There is already a viewer attached to this session");
887 case LTTNG_VIEWER_ATTACH_NOT_LIVE
:
888 BT_LOGW("Not a live session");
890 case LTTNG_VIEWER_ATTACH_SEEK_ERR
:
891 BT_LOGE("Wrong seek parameter");
894 BT_LOGE("Unknown attach return code %u", be32toh(rp
.status
));
898 /* We receive the initial list of streams. */
899 if (receive_streams(session
, streams_count
)) {
903 session
->attached
= true;
904 session
->new_streams_needed
= false;
913 int lttng_live_detach_session(struct lttng_live_session
*session
)
915 struct lttng_viewer_cmd cmd
;
916 struct lttng_viewer_detach_session_request rq
;
917 struct lttng_viewer_detach_session_response rp
;
919 struct lttng_live_msg_iter
*lttng_live_msg_iter
= session
->lttng_live_msg_iter
;
920 struct live_viewer_connection
*viewer_connection
=
921 lttng_live_msg_iter
->viewer_connection
;
922 uint64_t session_id
= session
->id
;
923 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
924 char cmd_buf
[cmd_buf_len
];
926 if (!session
->attached
) {
930 cmd
.cmd
= htobe32(LTTNG_VIEWER_DETACH_SESSION
);
931 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
932 cmd
.cmd_version
= htobe32(0);
934 memset(&rq
, 0, sizeof(rq
));
935 rq
.session_id
= htobe64(session_id
);
938 * Merge the cmd and connection request to prevent a write-write
939 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
940 * second write to be performed quickly in presence of Nagle's algorithm.
942 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
943 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
944 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
945 if (ret_len
== BT_SOCKET_ERROR
) {
946 BT_LOGE("Error sending detach request: %s", bt_socket_errormsg());
950 BT_ASSERT(ret_len
== cmd_buf_len
);
951 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
953 BT_LOGI("Remote side has closed connection");
956 if (ret_len
== BT_SOCKET_ERROR
) {
957 BT_LOGE("Error receiving detach response: %s", bt_socket_errormsg());
960 BT_ASSERT(ret_len
== sizeof(rp
));
962 switch(be32toh(rp
.status
)) {
963 case LTTNG_VIEWER_DETACH_SESSION_OK
:
965 case LTTNG_VIEWER_DETACH_SESSION_UNK
:
966 BT_LOGW("Session id %" PRIu64
" is unknown", session_id
);
968 case LTTNG_VIEWER_DETACH_SESSION_ERR
:
969 BT_LOGW("Error detaching session id %" PRIu64
"", session_id
);
972 BT_LOGE("Unknown detach return code %u", be32toh(rp
.status
));
976 session
->attached
= false;
985 ssize_t
lttng_live_get_one_metadata_packet(struct lttng_live_trace
*trace
,
990 struct lttng_viewer_cmd cmd
;
991 struct lttng_viewer_get_metadata rq
;
992 struct lttng_viewer_metadata_packet rp
;
995 struct lttng_live_session
*session
= trace
->session
;
996 struct lttng_live_msg_iter
*lttng_live_msg_iter
= session
->lttng_live_msg_iter
;
997 struct lttng_live_metadata
*metadata
= trace
->metadata
;
998 struct live_viewer_connection
*viewer_connection
=
999 lttng_live_msg_iter
->viewer_connection
;
1000 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1001 char cmd_buf
[cmd_buf_len
];
1003 rq
.stream_id
= htobe64(metadata
->stream_id
);
1004 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_METADATA
);
1005 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1006 cmd
.cmd_version
= htobe32(0);
1009 * Merge the cmd and connection request to prevent a write-write
1010 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1011 * second write to be performed quickly in presence of Nagle's algorithm.
1013 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1014 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1015 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1016 if (ret_len
== BT_SOCKET_ERROR
) {
1017 BT_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg());
1021 BT_ASSERT(ret_len
== cmd_buf_len
);
1022 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1024 BT_LOGI("Remote side has closed connection");
1027 if (ret_len
== BT_SOCKET_ERROR
) {
1028 BT_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg());
1031 BT_ASSERT(ret_len
== sizeof(rp
));
1033 switch (be32toh(rp
.status
)) {
1034 case LTTNG_VIEWER_METADATA_OK
:
1035 BT_LOGD("get_metadata : OK");
1037 case LTTNG_VIEWER_NO_NEW_METADATA
:
1038 BT_LOGD("get_metadata : NO NEW");
1041 case LTTNG_VIEWER_METADATA_ERR
:
1042 BT_LOGD("get_metadata : ERR");
1045 BT_LOGD("get_metadata : UNKNOWN");
1049 len
= be64toh(rp
.len
);
1050 BT_LOGD("Writing %" PRIu64
" bytes to metadata", len
);
1055 data
= calloc(1, len
);
1057 BT_LOGE("relay data calloc: %s", strerror(errno
));
1060 ret_len
= lttng_live_recv(viewer_connection
, data
, len
);
1062 BT_LOGI("Remote side has closed connection");
1063 goto error_free_data
;
1065 if (ret_len
== BT_SOCKET_ERROR
) {
1066 BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1067 goto error_free_data
;
1069 BT_ASSERT(ret_len
== len
);
1072 ret_len
= fwrite(data
, 1, len
, fp
);
1073 } while (ret_len
< 0 && errno
== EINTR
);
1075 BT_LOGE("Writing in the metadata fp");
1076 goto error_free_data
;
1078 BT_ASSERT(ret_len
== len
);
1091 * Assign the fields from a lttng_viewer_index to a packet_index.
1094 void lttng_index_to_packet_index(struct lttng_viewer_index
*lindex
,
1095 struct packet_index
*pindex
)
1100 pindex
->offset
= be64toh(lindex
->offset
);
1101 pindex
->packet_size
= be64toh(lindex
->packet_size
);
1102 pindex
->content_size
= be64toh(lindex
->content_size
);
1103 pindex
->ts_cycles
.timestamp_begin
= be64toh(lindex
->timestamp_begin
);
1104 pindex
->ts_cycles
.timestamp_end
= be64toh(lindex
->timestamp_end
);
1105 pindex
->events_discarded
= be64toh(lindex
->events_discarded
);
1109 enum lttng_live_iterator_status
lttng_live_get_next_index(
1110 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1111 struct lttng_live_stream_iterator
*stream
,
1112 struct packet_index
*index
)
1114 struct lttng_viewer_cmd cmd
;
1115 struct lttng_viewer_get_next_index rq
;
1117 struct lttng_viewer_index rp
;
1118 uint32_t flags
, status
;
1119 enum lttng_live_iterator_status retstatus
=
1120 LTTNG_LIVE_ITERATOR_STATUS_OK
;
1121 struct live_viewer_connection
*viewer_connection
=
1122 lttng_live_msg_iter
->viewer_connection
;
1123 struct lttng_live_trace
*trace
= stream
->trace
;
1124 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1125 char cmd_buf
[cmd_buf_len
];
1126 struct lttng_live_component
*lttng_live
=
1127 lttng_live_msg_iter
->lttng_live_comp
;
1129 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEXT_INDEX
);
1130 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1131 cmd
.cmd_version
= htobe32(0);
1134 memset(&rq
, 0, sizeof(rq
));
1135 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1138 * Merge the cmd and connection request to prevent a write-write
1139 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1140 * second write to be performed quickly in presence of Nagle's algorithm.
1142 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1143 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1144 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1145 if (ret_len
== BT_SOCKET_ERROR
) {
1146 BT_LOGE("Error sending get_next_index request: %s",
1147 bt_socket_errormsg());
1151 BT_ASSERT(ret_len
== cmd_buf_len
);
1152 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1154 BT_LOGI("Remote side has closed connection");
1157 if (ret_len
== BT_SOCKET_ERROR
) {
1158 BT_LOGE("Error receiving get_next_index response: %s",
1159 bt_socket_errormsg());
1162 BT_ASSERT(ret_len
== sizeof(rp
));
1164 flags
= be32toh(rp
.flags
);
1165 status
= be32toh(rp
.status
);
1168 case LTTNG_VIEWER_INDEX_INACTIVE
:
1170 uint64_t ctf_stream_class_id
;
1172 BT_LOGD("get_next_index: inactive");
1173 memset(index
, 0, sizeof(struct packet_index
));
1174 index
->ts_cycles
.timestamp_end
= be64toh(rp
.timestamp_end
);
1175 stream
->current_inactivity_ts
= index
->ts_cycles
.timestamp_end
;
1176 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1177 if (stream
->ctf_stream_class_id
!= -1ULL) {
1178 BT_ASSERT(stream
->ctf_stream_class_id
==
1179 ctf_stream_class_id
);
1181 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1183 stream
->state
= LTTNG_LIVE_STREAM_QUIESCENT
;
1186 case LTTNG_VIEWER_INDEX_OK
:
1188 uint64_t ctf_stream_class_id
;
1190 BT_LOGD("get_next_index: OK");
1191 lttng_index_to_packet_index(&rp
, index
);
1192 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1193 if (stream
->ctf_stream_class_id
!= -1ULL) {
1194 BT_ASSERT(stream
->ctf_stream_class_id
==
1195 ctf_stream_class_id
);
1197 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1200 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_DATA
;
1202 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1203 BT_LOGD("get_next_index: new metadata needed");
1204 trace
->new_metadata_needed
= true;
1206 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1207 BT_LOGD("get_next_index: new streams needed");
1208 lttng_live_need_new_streams(lttng_live_msg_iter
);
1212 case LTTNG_VIEWER_INDEX_RETRY
:
1213 BT_LOGD("get_next_index: retry");
1214 memset(index
, 0, sizeof(struct packet_index
));
1215 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1216 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1218 case LTTNG_VIEWER_INDEX_HUP
:
1219 BT_LOGD("get_next_index: stream hung up");
1220 memset(index
, 0, sizeof(struct packet_index
));
1221 index
->offset
= EOF
;
1222 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1223 stream
->state
= LTTNG_LIVE_STREAM_EOF
;
1225 case LTTNG_VIEWER_INDEX_ERR
:
1226 BT_LOGE("get_next_index: error");
1227 memset(index
, 0, sizeof(struct packet_index
));
1228 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1231 BT_LOGE("get_next_index: unknown value");
1232 memset(index
, 0, sizeof(struct packet_index
));
1233 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1240 if (lttng_live_graph_is_canceled(lttng_live
)) {
1241 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1243 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1249 enum bt_msg_iter_medium_status
lttng_live_get_stream_bytes(
1250 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1251 struct lttng_live_stream_iterator
*stream
, uint8_t *buf
,
1252 uint64_t offset
, uint64_t req_len
, uint64_t *recv_len
)
1254 enum bt_msg_iter_medium_status retstatus
= BT_MSG_ITER_MEDIUM_STATUS_OK
;
1255 struct lttng_viewer_cmd cmd
;
1256 struct lttng_viewer_get_packet rq
;
1257 struct lttng_viewer_trace_packet rp
;
1259 uint32_t flags
, status
;
1260 struct live_viewer_connection
*viewer_connection
=
1261 lttng_live_msg_iter
->viewer_connection
;
1262 struct lttng_live_trace
*trace
= stream
->trace
;
1263 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1264 char cmd_buf
[cmd_buf_len
];
1265 struct lttng_live_component
*lttng_live
=
1266 lttng_live_msg_iter
->lttng_live_comp
;
1268 BT_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64
", req_len=%" PRIu64
,
1270 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_PACKET
);
1271 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1272 cmd
.cmd_version
= htobe32(0);
1274 memset(&rq
, 0, sizeof(rq
));
1275 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1276 rq
.offset
= htobe64(offset
);
1277 rq
.len
= htobe32(req_len
);
1280 * Merge the cmd and connection request to prevent a write-write
1281 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1282 * second write to be performed quickly in presence of Nagle's algorithm.
1284 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1285 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1286 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1287 if (ret_len
== BT_SOCKET_ERROR
) {
1288 BT_LOGE("Error sending get_data request: %s", bt_socket_errormsg());
1292 BT_ASSERT(ret_len
== cmd_buf_len
);
1293 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1295 BT_LOGI("Remote side has closed connection");
1298 if (ret_len
== BT_SOCKET_ERROR
) {
1299 BT_LOGE("Error receiving get_data response: %s", bt_socket_errormsg());
1302 if (ret_len
!= sizeof(rp
)) {
1303 BT_LOGE("get_data_packet: expected %zu"
1304 ", received %zd", sizeof(rp
),
1309 flags
= be32toh(rp
.flags
);
1310 status
= be32toh(rp
.status
);
1313 case LTTNG_VIEWER_GET_PACKET_OK
:
1314 req_len
= be32toh(rp
.len
);
1315 BT_LOGD("get_data_packet: Ok, packet size : %" PRIu64
"", req_len
);
1317 case LTTNG_VIEWER_GET_PACKET_RETRY
:
1318 /* Unimplemented by relay daemon */
1319 BT_LOGD("get_data_packet: retry");
1320 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1322 case LTTNG_VIEWER_GET_PACKET_ERR
:
1323 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1324 BT_LOGD("get_data_packet: new metadata needed, try again later");
1325 trace
->new_metadata_needed
= true;
1327 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1328 BT_LOGD("get_data_packet: new streams needed, try again later");
1329 lttng_live_need_new_streams(lttng_live_msg_iter
);
1331 if (flags
& (LTTNG_VIEWER_FLAG_NEW_METADATA
1332 | LTTNG_VIEWER_FLAG_NEW_STREAM
)) {
1333 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1336 BT_LOGE("get_data_packet: error");
1338 case LTTNG_VIEWER_GET_PACKET_EOF
:
1339 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_EOF
;
1342 BT_LOGE("get_data_packet: unknown");
1350 ret_len
= lttng_live_recv(viewer_connection
, buf
, req_len
);
1352 BT_LOGI("Remote side has closed connection");
1355 if (ret_len
== BT_SOCKET_ERROR
) {
1356 BT_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1359 BT_ASSERT(ret_len
== req_len
);
1360 *recv_len
= ret_len
;
1365 if (lttng_live_graph_is_canceled(lttng_live
)) {
1366 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1368 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_ERROR
;
1374 * Request new streams for a session.
1377 enum lttng_live_iterator_status
lttng_live_get_new_streams(
1378 struct lttng_live_session
*session
)
1380 enum lttng_live_iterator_status status
=
1381 LTTNG_LIVE_ITERATOR_STATUS_OK
;
1382 struct lttng_viewer_cmd cmd
;
1383 struct lttng_viewer_new_streams_request rq
;
1384 struct lttng_viewer_new_streams_response rp
;
1386 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1387 session
->lttng_live_msg_iter
;
1388 struct live_viewer_connection
*viewer_connection
=
1389 lttng_live_msg_iter
->viewer_connection
;
1390 struct lttng_live_component
*lttng_live
=
1391 lttng_live_msg_iter
->lttng_live_comp
;
1392 uint32_t streams_count
;
1393 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1394 char cmd_buf
[cmd_buf_len
];
1396 if (!session
->new_streams_needed
) {
1397 return LTTNG_LIVE_ITERATOR_STATUS_OK
;
1400 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEW_STREAMS
);
1401 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1402 cmd
.cmd_version
= htobe32(0);
1404 memset(&rq
, 0, sizeof(rq
));
1405 rq
.session_id
= htobe64(session
->id
);
1408 * Merge the cmd and connection request to prevent a write-write
1409 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1410 * second write to be performed quickly in presence of Nagle's algorithm.
1412 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1413 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1414 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1415 if (ret_len
== BT_SOCKET_ERROR
) {
1416 BT_LOGE("Error sending get_new_streams request: %s",
1417 bt_socket_errormsg());
1421 BT_ASSERT(ret_len
== cmd_buf_len
);
1422 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1424 BT_LOGI("Remote side has closed connection");
1427 if (ret_len
== BT_SOCKET_ERROR
) {
1428 BT_LOGE("Error receiving get_new_streams response");
1431 BT_ASSERT(ret_len
== sizeof(rp
));
1433 streams_count
= be32toh(rp
.streams_count
);
1435 switch(be32toh(rp
.status
)) {
1436 case LTTNG_VIEWER_NEW_STREAMS_OK
:
1437 session
->new_streams_needed
= false;
1439 case LTTNG_VIEWER_NEW_STREAMS_NO_NEW
:
1440 session
->new_streams_needed
= false;
1442 case LTTNG_VIEWER_NEW_STREAMS_HUP
:
1443 session
->new_streams_needed
= false;
1444 session
->closed
= true;
1445 status
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1447 case LTTNG_VIEWER_NEW_STREAMS_ERR
:
1448 BT_LOGE("get_new_streams error");
1451 BT_LOGE("Unknown return code %u", be32toh(rp
.status
));
1455 if (receive_streams(session
, streams_count
)) {
1462 if (lttng_live_graph_is_canceled(lttng_live
)) {
1463 status
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1465 status
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1471 struct live_viewer_connection
*live_viewer_connection_create(
1472 const char *url
, bool in_query
,
1473 struct lttng_live_msg_iter
*lttng_live_msg_iter
)
1475 struct live_viewer_connection
*viewer_connection
;
1477 viewer_connection
= g_new0(struct live_viewer_connection
, 1);
1479 if (bt_socket_init() != 0) {
1483 viewer_connection
->log_level
= lttng_live_msg_iter
->log_level
;
1484 bt_object_init_shared(&viewer_connection
->obj
, connection_release
);
1485 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
1486 viewer_connection
->port
= -1;
1487 viewer_connection
->in_query
= in_query
;
1488 viewer_connection
->lttng_live_msg_iter
= lttng_live_msg_iter
;
1489 viewer_connection
->url
= g_string_new(url
);
1490 if (!viewer_connection
->url
) {
1494 BT_LOGI("Establishing connection to url \"%s\"...", url
);
1495 if (lttng_live_connect_viewer(viewer_connection
)) {
1498 BT_LOGI("Connection to url \"%s\" is established", url
);
1499 return viewer_connection
;
1502 BT_LOGW("Failure to establish connection to url \"%s\"", url
);
1504 g_free(viewer_connection
);
1509 void live_viewer_connection_destroy(
1510 struct live_viewer_connection
*viewer_connection
)
1512 BT_LOGI("Closing connection to url \"%s\"", viewer_connection
->url
->str
);
1513 lttng_live_disconnect_viewer(viewer_connection
);
1514 g_string_free(viewer_connection
->url
, true);
1515 if (viewer_connection
->relay_hostname
) {
1516 g_string_free(viewer_connection
->relay_hostname
, true);
1518 if (viewer_connection
->target_hostname
) {
1519 g_string_free(viewer_connection
->target_hostname
, true);
1521 if (viewer_connection
->session_name
) {
1522 g_string_free(viewer_connection
->session_name
, true);
1524 g_free(viewer_connection
);