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_COMP_LOG_SELF_COMP (viewer_connection->self_comp)
25 #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level)
26 #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER"
27 #include "logging/comp-logging.h"
36 #include <sys/types.h>
39 #include "compat/socket.h"
40 #include "compat/endian.h"
41 #include "compat/compiler.h"
42 #include "common/common.h"
43 #include <babeltrace2/babeltrace.h>
45 #include "lttng-live.h"
46 #include "viewer-connection.h"
47 #include "lttng-viewer-abi.h"
48 #include "data-stream.h"
52 ssize_t
lttng_live_recv(struct live_viewer_connection
*viewer_connection
,
53 void *buf
, size_t len
)
56 size_t copied
= 0, to_copy
= len
;
57 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
58 viewer_connection
->lttng_live_msg_iter
;
59 BT_SOCKET sock
= viewer_connection
->control_sock
;
62 ret
= bt_socket_recv(sock
, buf
+ copied
, to_copy
, 0);
64 BT_ASSERT(ret
<= to_copy
);
68 if (ret
== BT_SOCKET_ERROR
&& bt_socket_interrupted()) {
69 if (!viewer_connection
->in_query
&&
70 lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
76 } while (ret
> 0 && to_copy
> 0);
79 /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */
84 ssize_t
lttng_live_send(struct live_viewer_connection
*viewer_connection
,
85 const void *buf
, size_t len
)
87 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
88 viewer_connection
->lttng_live_msg_iter
;
89 BT_SOCKET sock
= viewer_connection
->control_sock
;
93 ret
= bt_socket_send_nosigpipe(sock
, buf
, len
);
94 if (ret
== BT_SOCKET_ERROR
&& bt_socket_interrupted()) {
95 if (!viewer_connection
->in_query
&&
96 lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
109 int parse_url(struct live_viewer_connection
*viewer_connection
)
111 char error_buf
[256] = { 0 };
112 struct bt_common_lttng_live_url_parts lttng_live_url_parts
= { 0 };
114 const char *path
= viewer_connection
->url
->str
;
120 lttng_live_url_parts
= bt_common_parse_lttng_live_url(path
, error_buf
,
122 if (!lttng_live_url_parts
.proto
) {
123 BT_COMP_LOGW("Invalid LTTng live URL format: %s", error_buf
);
127 viewer_connection
->relay_hostname
= 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
= lttng_live_url_parts
.target_hostname
;
137 lttng_live_url_parts
.target_hostname
= NULL
;
139 if (lttng_live_url_parts
.session_name
) {
140 viewer_connection
->session_name
= lttng_live_url_parts
.session_name
;
141 lttng_live_url_parts
.session_name
= NULL
;
144 BT_COMP_LOGI("Connecting to hostname : %s, port : %d, "
145 "target hostname : %s, session name : %s, proto : %s",
146 viewer_connection
->relay_hostname
->str
,
147 viewer_connection
->port
,
148 !viewer_connection
->target_hostname
?
149 "<none>" : viewer_connection
->target_hostname
->str
,
150 !viewer_connection
->session_name
?
151 "<none>" : viewer_connection
->session_name
->str
,
152 lttng_live_url_parts
.proto
->str
);
156 bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts
);
161 int lttng_live_handshake(struct live_viewer_connection
*viewer_connection
)
163 struct lttng_viewer_cmd cmd
;
164 struct lttng_viewer_connect connect
;
165 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(connect
);
166 char cmd_buf
[cmd_buf_len
];
170 cmd
.cmd
= htobe32(LTTNG_VIEWER_CONNECT
);
171 cmd
.data_size
= htobe64((uint64_t) sizeof(connect
));
172 cmd
.cmd_version
= htobe32(0);
174 connect
.viewer_session_id
= -1ULL; /* will be set on recv */
175 connect
.major
= htobe32(LTTNG_LIVE_MAJOR
);
176 connect
.minor
= htobe32(LTTNG_LIVE_MINOR
);
177 connect
.type
= htobe32(LTTNG_VIEWER_CLIENT_COMMAND
);
180 * Merge the cmd and connection request to prevent a write-write
181 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
182 * second write to be performed quickly in presence of Nagle's algorithm
184 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
185 memcpy(cmd_buf
+ sizeof(cmd
), &connect
, sizeof(connect
));
186 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
187 if (ret_len
== BT_SOCKET_ERROR
) {
188 BT_COMP_LOGE("Error sending version: %s", bt_socket_errormsg());
192 BT_ASSERT(ret_len
== cmd_buf_len
);
194 ret_len
= lttng_live_recv(viewer_connection
, &connect
, sizeof(connect
));
196 BT_COMP_LOGI("Remote side has closed connection");
199 if (ret_len
== BT_SOCKET_ERROR
) {
200 BT_COMP_LOGE("Error receiving version: %s", bt_socket_errormsg());
203 BT_ASSERT(ret_len
== sizeof(connect
));
205 BT_COMP_LOGI("Received viewer session ID : %" PRIu64
,
206 (uint64_t) be64toh(connect
.viewer_session_id
));
207 BT_COMP_LOGI("Relayd version : %u.%u", be32toh(connect
.major
),
208 be32toh(connect
.minor
));
210 if (LTTNG_LIVE_MAJOR
!= be32toh(connect
.major
)) {
211 BT_COMP_LOGE("Incompatible lttng-relayd protocol");
214 /* Use the smallest protocol version implemented. */
215 if (LTTNG_LIVE_MINOR
> be32toh(connect
.minor
)) {
216 viewer_connection
->minor
= be32toh(connect
.minor
);
218 viewer_connection
->minor
= LTTNG_LIVE_MINOR
;
220 viewer_connection
->major
= LTTNG_LIVE_MAJOR
;
225 BT_COMP_LOGE("Unable to establish connection");
230 int lttng_live_connect_viewer(struct live_viewer_connection
*viewer_connection
)
232 struct hostent
*host
;
233 struct sockaddr_in server_addr
;
236 if (parse_url(viewer_connection
)) {
240 host
= gethostbyname(viewer_connection
->relay_hostname
->str
);
242 BT_COMP_LOGE("Cannot lookup hostname %s",
243 viewer_connection
->relay_hostname
->str
);
247 if ((viewer_connection
->control_sock
= socket(AF_INET
, SOCK_STREAM
, 0)) == BT_INVALID_SOCKET
) {
248 BT_COMP_LOGE("Socket creation failed: %s", bt_socket_errormsg());
252 server_addr
.sin_family
= AF_INET
;
253 server_addr
.sin_port
= htons(viewer_connection
->port
);
254 server_addr
.sin_addr
= *((struct in_addr
*) host
->h_addr
);
255 memset(&(server_addr
.sin_zero
), 0, 8);
257 if (connect(viewer_connection
->control_sock
, (struct sockaddr
*) &server_addr
,
258 sizeof(struct sockaddr
)) == BT_SOCKET_ERROR
) {
259 BT_COMP_LOGE("Connection failed: %s", bt_socket_errormsg());
262 if (lttng_live_handshake(viewer_connection
)) {
271 if (viewer_connection
->control_sock
!= BT_INVALID_SOCKET
) {
272 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
273 BT_COMP_LOGE("Close: %s", bt_socket_errormsg());
276 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
281 void lttng_live_disconnect_viewer(
282 struct live_viewer_connection
*viewer_connection
)
284 if (viewer_connection
->control_sock
== BT_INVALID_SOCKET
) {
287 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
288 BT_COMP_LOGE("Close: %s", bt_socket_errormsg());
289 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
294 void connection_release(bt_object
*obj
)
296 struct live_viewer_connection
*conn
=
297 container_of(obj
, struct live_viewer_connection
, obj
);
299 live_viewer_connection_destroy(conn
);
303 int list_update_session(bt_value
*results
,
304 const struct lttng_viewer_session
*session
,
305 bool *_found
, struct live_viewer_connection
*viewer_connection
)
309 bt_value
*map
= NULL
;
310 bt_value
*hostname
= NULL
;
311 bt_value
*session_name
= NULL
;
312 bt_value
*btval
= NULL
;
315 len
= bt_value_array_get_length(results
);
316 for (i
= 0; i
< len
; i
++) {
317 const char *hostname_str
= NULL
;
318 const char *session_name_str
= NULL
;
320 map
= bt_value_array_borrow_element_by_index(results
, i
);
321 hostname
= bt_value_map_borrow_entry_value(map
, "target-hostname");
323 BT_COMP_LOGE_STR("Error borrowing \"target-hostname\" entry.");
327 session_name
= bt_value_map_borrow_entry_value(map
, "session-name");
329 BT_COMP_LOGE_STR("Error borrowing \"session-name\" entry.");
333 hostname_str
= bt_value_string_get(hostname
);
334 session_name_str
= bt_value_string_get(session_name
);
336 if (strcmp(session
->hostname
, hostname_str
) == 0
337 && strcmp(session
->session_name
, session_name_str
) == 0) {
339 uint32_t streams
= be32toh(session
->streams
);
340 uint32_t clients
= be32toh(session
->clients
);
344 btval
= bt_value_map_borrow_entry_value(map
, "stream-count");
346 BT_COMP_LOGE_STR("Error borrowing \"stream-count\" entry.");
350 val
= bt_value_integer_unsigned_get(btval
);
353 bt_value_integer_unsigned_set(btval
, val
);
355 btval
= bt_value_map_borrow_entry_value(map
, "client-count");
357 BT_COMP_LOGE_STR("Error borrowing \"client-count\" entry.");
361 val
= bt_value_integer_unsigned_get(btval
);
363 val
= bt_max_t(int64_t, clients
, val
);
364 bt_value_integer_unsigned_set(btval
, val
);
377 int list_append_session(bt_value
*results
,
379 const struct lttng_viewer_session
*session
,
380 struct live_viewer_connection
*viewer_connection
)
383 bt_value_map_insert_entry_status insert_status
;
384 bt_value_array_append_element_status append_status
;
385 bt_value
*map
= NULL
;
390 * If the session already exists, add the stream count to it,
391 * and do max of client counts.
393 ret
= list_update_session(results
, session
, &found
, viewer_connection
);
398 map
= bt_value_map_create();
400 BT_COMP_LOGE_STR("Error creating map value.");
405 if (base_url
->len
< 1) {
406 BT_COMP_LOGE_STR("Error: base_url length smaller than 1.");
414 url
= g_string_new(base_url
->str
);
415 g_string_append(url
, "/host/");
416 g_string_append(url
, session
->hostname
);
417 g_string_append_c(url
, '/');
418 g_string_append(url
, session
->session_name
);
420 insert_status
= bt_value_map_insert_string_entry(map
, "url", url
->str
);
421 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
422 BT_COMP_LOGE_STR("Error inserting \"url\" entry.");
428 * key = "target-hostname",
431 insert_status
= bt_value_map_insert_string_entry(map
, "target-hostname",
433 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
434 BT_COMP_LOGE_STR("Error inserting \"target-hostname\" entry.");
440 * key = "session-name",
443 insert_status
= bt_value_map_insert_string_entry(map
, "session-name",
444 session
->session_name
);
445 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
446 BT_COMP_LOGE_STR("Error inserting \"session-name\" entry.");
456 uint32_t live_timer
= be32toh(session
->live_timer
);
458 insert_status
= bt_value_map_insert_unsigned_integer_entry(
459 map
, "timer-us", live_timer
);
460 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
461 BT_COMP_LOGE_STR("Error inserting \"timer-us\" entry.");
468 * key = "stream-count",
472 uint32_t streams
= be32toh(session
->streams
);
474 insert_status
= bt_value_map_insert_unsigned_integer_entry(map
,
475 "stream-count", streams
);
476 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
477 BT_COMP_LOGE_STR("Error inserting \"stream-count\" entry.");
484 * key = "client-count",
488 uint32_t clients
= be32toh(session
->clients
);
490 insert_status
= bt_value_map_insert_unsigned_integer_entry(map
,
491 "client-count", clients
);
492 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
493 BT_COMP_LOGE_STR("Error inserting \"client-count\" entry.");
499 append_status
= bt_value_array_append_element(results
, map
);
500 if (append_status
!= BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK
) {
501 BT_COMP_LOGE_STR("Error appending map to results.");
507 g_string_free(url
, true);
509 BT_VALUE_PUT_REF_AND_RESET(map
);
514 * Data structure returned:
525 * key = "target-hostname",
529 * key = "session-name",
537 * key = "stream-count",
541 * key = "client-count",
550 bt_component_class_query_method_status
live_viewer_connection_list_sessions(
551 struct live_viewer_connection
*viewer_connection
,
552 const bt_value
**user_result
)
554 bt_component_class_query_method_status status
=
555 BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK
;
556 bt_value
*result
= NULL
;
557 struct lttng_viewer_cmd cmd
;
558 struct lttng_viewer_list_sessions list
;
559 uint32_t i
, sessions_count
;
562 result
= bt_value_array_create();
564 BT_COMP_LOGE("Error creating array");
565 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR
;
569 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
570 cmd
.data_size
= htobe64((uint64_t) 0);
571 cmd
.cmd_version
= htobe32(0);
573 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
574 if (ret_len
== BT_SOCKET_ERROR
) {
575 BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg());
576 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
579 BT_ASSERT(ret_len
== sizeof(cmd
));
581 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
583 BT_COMP_LOGI("Remote side has closed connection");
584 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
587 if (ret_len
== BT_SOCKET_ERROR
) {
588 BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg());
589 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
592 BT_ASSERT(ret_len
== sizeof(list
));
594 sessions_count
= be32toh(list
.sessions_count
);
595 for (i
= 0; i
< sessions_count
; i
++) {
596 struct lttng_viewer_session lsession
;
598 ret_len
= lttng_live_recv(viewer_connection
, &lsession
,
601 BT_COMP_LOGI("Remote side has closed connection");
602 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
605 if (ret_len
== BT_SOCKET_ERROR
) {
606 BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg());
607 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
610 BT_ASSERT(ret_len
== sizeof(lsession
));
611 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
612 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
613 if (list_append_session(result
, viewer_connection
->url
,
614 &lsession
, viewer_connection
)) {
615 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
620 *user_result
= result
;
623 BT_VALUE_PUT_REF_AND_RESET(result
);
629 int lttng_live_query_session_ids(struct lttng_live_msg_iter
*lttng_live_msg_iter
)
631 struct lttng_viewer_cmd cmd
;
632 struct lttng_viewer_list_sessions list
;
633 struct lttng_viewer_session lsession
;
634 uint32_t i
, sessions_count
;
637 struct live_viewer_connection
*viewer_connection
=
638 lttng_live_msg_iter
->viewer_connection
;
640 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
641 cmd
.data_size
= htobe64((uint64_t) 0);
642 cmd
.cmd_version
= htobe32(0);
644 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
645 if (ret_len
== BT_SOCKET_ERROR
) {
646 BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg());
649 BT_ASSERT(ret_len
== sizeof(cmd
));
651 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
653 BT_COMP_LOGI("Remote side has closed connection");
656 if (ret_len
== BT_SOCKET_ERROR
) {
657 BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg());
660 BT_ASSERT(ret_len
== sizeof(list
));
662 sessions_count
= be32toh(list
.sessions_count
);
663 for (i
= 0; i
< sessions_count
; i
++) {
664 ret_len
= lttng_live_recv(viewer_connection
,
665 &lsession
, sizeof(lsession
));
667 BT_COMP_LOGI("Remote side has closed connection");
670 if (ret_len
== BT_SOCKET_ERROR
) {
671 BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg());
674 BT_ASSERT(ret_len
== sizeof(lsession
));
675 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
676 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
677 session_id
= be64toh(lsession
.id
);
679 BT_COMP_LOGI("Adding session %" PRIu64
" hostname: %s session_name: %s",
680 session_id
, lsession
.hostname
, lsession
.session_name
);
682 if ((strncmp(lsession
.session_name
,
683 viewer_connection
->session_name
->str
,
684 LTTNG_VIEWER_NAME_MAX
) == 0) && (strncmp(lsession
.hostname
,
685 viewer_connection
->target_hostname
->str
,
686 LTTNG_VIEWER_HOST_NAME_MAX
) == 0)) {
687 if (lttng_live_add_session(lttng_live_msg_iter
, session_id
,
689 lsession
.session_name
)) {
698 BT_COMP_LOGE("Unable to query session ids");
703 int lttng_live_create_viewer_session(
704 struct lttng_live_msg_iter
*lttng_live_msg_iter
)
706 struct lttng_viewer_cmd cmd
;
707 struct lttng_viewer_create_session_response resp
;
709 struct live_viewer_connection
*viewer_connection
=
710 lttng_live_msg_iter
->viewer_connection
;
712 cmd
.cmd
= htobe32(LTTNG_VIEWER_CREATE_SESSION
);
713 cmd
.data_size
= htobe64((uint64_t) 0);
714 cmd
.cmd_version
= htobe32(0);
716 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
717 if (ret_len
== BT_SOCKET_ERROR
) {
718 BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg());
721 BT_ASSERT(ret_len
== sizeof(cmd
));
723 ret_len
= lttng_live_recv(viewer_connection
, &resp
, sizeof(resp
));
725 BT_COMP_LOGI("Remote side has closed connection");
728 if (ret_len
== BT_SOCKET_ERROR
) {
729 BT_COMP_LOGE("Error receiving create session reply: %s", bt_socket_errormsg());
732 BT_ASSERT(ret_len
== sizeof(resp
));
734 if (be32toh(resp
.status
) != LTTNG_VIEWER_CREATE_SESSION_OK
) {
735 BT_COMP_LOGE("Error creating viewer session");
738 if (lttng_live_query_session_ids(lttng_live_msg_iter
)) {
749 int receive_streams(struct lttng_live_session
*session
,
750 uint32_t stream_count
)
754 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
755 session
->lttng_live_msg_iter
;
756 struct live_viewer_connection
*viewer_connection
=
757 lttng_live_msg_iter
->viewer_connection
;
759 BT_COMP_LOGI("Getting %" PRIu32
" new streams:", stream_count
);
760 for (i
= 0; i
< stream_count
; i
++) {
761 struct lttng_viewer_stream stream
;
762 struct lttng_live_stream_iterator
*live_stream
;
764 uint64_t ctf_trace_id
;
766 ret_len
= lttng_live_recv(viewer_connection
, &stream
, sizeof(stream
));
768 BT_COMP_LOGI("Remote side has closed connection");
771 if (ret_len
== BT_SOCKET_ERROR
) {
772 BT_COMP_LOGE("Error receiving stream");
775 BT_ASSERT(ret_len
== sizeof(stream
));
776 stream
.path_name
[LTTNG_VIEWER_PATH_MAX
- 1] = '\0';
777 stream
.channel_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
778 stream_id
= be64toh(stream
.id
);
779 ctf_trace_id
= be64toh(stream
.ctf_trace_id
);
781 if (stream
.metadata_flag
) {
782 BT_COMP_LOGI(" metadata stream %" PRIu64
" : %s/%s",
783 stream_id
, stream
.path_name
, stream
.channel_name
);
784 if (lttng_live_metadata_create_stream(session
,
785 ctf_trace_id
, stream_id
,
787 BT_COMP_LOGE("Error creating metadata stream");
791 session
->lazy_stream_msg_init
= true;
793 BT_COMP_LOGI(" stream %" PRIu64
" : %s/%s",
794 stream_id
, stream
.path_name
, stream
.channel_name
);
795 live_stream
= lttng_live_stream_iterator_create(session
,
796 ctf_trace_id
, stream_id
);
798 BT_COMP_LOGE("Error creating streamn");
810 int lttng_live_attach_session(struct lttng_live_session
*session
)
812 struct lttng_viewer_cmd cmd
;
813 struct lttng_viewer_attach_session_request rq
;
814 struct lttng_viewer_attach_session_response rp
;
815 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
816 session
->lttng_live_msg_iter
;
817 struct live_viewer_connection
*viewer_connection
=
818 lttng_live_msg_iter
->viewer_connection
;
819 uint64_t session_id
= session
->id
;
820 uint32_t streams_count
;
821 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
822 char cmd_buf
[cmd_buf_len
];
825 cmd
.cmd
= htobe32(LTTNG_VIEWER_ATTACH_SESSION
);
826 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
827 cmd
.cmd_version
= htobe32(0);
829 memset(&rq
, 0, sizeof(rq
));
830 rq
.session_id
= htobe64(session_id
);
831 // TODO: add cmd line parameter to select seek beginning
832 // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
833 rq
.seek
= htobe32(LTTNG_VIEWER_SEEK_LAST
);
836 * Merge the cmd and connection request to prevent a write-write
837 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
838 * second write to be performed quickly in presence of Nagle's algorithm.
840 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
841 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
842 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
843 if (ret_len
== BT_SOCKET_ERROR
) {
844 BT_COMP_LOGE("Error sending attach request: %s", bt_socket_errormsg());
848 BT_ASSERT(ret_len
== cmd_buf_len
);
849 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
851 BT_COMP_LOGI("Remote side has closed connection");
854 if (ret_len
== BT_SOCKET_ERROR
) {
855 BT_COMP_LOGE("Error receiving attach response: %s", bt_socket_errormsg());
858 BT_ASSERT(ret_len
== sizeof(rp
));
860 streams_count
= be32toh(rp
.streams_count
);
861 switch(be32toh(rp
.status
)) {
862 case LTTNG_VIEWER_ATTACH_OK
:
864 case LTTNG_VIEWER_ATTACH_UNK
:
865 BT_COMP_LOGW("Session id %" PRIu64
" is unknown", session_id
);
867 case LTTNG_VIEWER_ATTACH_ALREADY
:
868 BT_COMP_LOGW("There is already a viewer attached to this session");
870 case LTTNG_VIEWER_ATTACH_NOT_LIVE
:
871 BT_COMP_LOGW("Not a live session");
873 case LTTNG_VIEWER_ATTACH_SEEK_ERR
:
874 BT_COMP_LOGE("Wrong seek parameter");
877 BT_COMP_LOGE("Unknown attach return code %u", be32toh(rp
.status
));
881 /* We receive the initial list of streams. */
882 if (receive_streams(session
, streams_count
)) {
886 session
->attached
= true;
887 session
->new_streams_needed
= false;
896 int lttng_live_detach_session(struct lttng_live_session
*session
)
898 struct lttng_viewer_cmd cmd
;
899 struct lttng_viewer_detach_session_request rq
;
900 struct lttng_viewer_detach_session_response rp
;
902 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
903 session
->lttng_live_msg_iter
;
904 struct live_viewer_connection
*viewer_connection
=
905 lttng_live_msg_iter
->viewer_connection
;
906 uint64_t session_id
= session
->id
;
907 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
908 char cmd_buf
[cmd_buf_len
];
910 if (!session
->attached
) {
914 cmd
.cmd
= htobe32(LTTNG_VIEWER_DETACH_SESSION
);
915 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
916 cmd
.cmd_version
= htobe32(0);
918 memset(&rq
, 0, sizeof(rq
));
919 rq
.session_id
= htobe64(session_id
);
922 * Merge the cmd and connection request to prevent a write-write
923 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
924 * second write to be performed quickly in presence of Nagle's algorithm.
926 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
927 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
928 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
929 if (ret_len
== BT_SOCKET_ERROR
) {
930 BT_COMP_LOGE("Error sending detach request: %s", bt_socket_errormsg());
934 BT_ASSERT(ret_len
== cmd_buf_len
);
935 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
937 BT_COMP_LOGI("Remote side has closed connection");
940 if (ret_len
== BT_SOCKET_ERROR
) {
941 BT_COMP_LOGE("Error receiving detach response: %s", bt_socket_errormsg());
944 BT_ASSERT(ret_len
== sizeof(rp
));
946 switch(be32toh(rp
.status
)) {
947 case LTTNG_VIEWER_DETACH_SESSION_OK
:
949 case LTTNG_VIEWER_DETACH_SESSION_UNK
:
950 BT_COMP_LOGW("Session id %" PRIu64
" is unknown", session_id
);
952 case LTTNG_VIEWER_DETACH_SESSION_ERR
:
953 BT_COMP_LOGW("Error detaching session id %" PRIu64
"", session_id
);
956 BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp
.status
));
960 session
->attached
= false;
969 ssize_t
lttng_live_get_one_metadata_packet(struct lttng_live_trace
*trace
,
974 struct lttng_viewer_cmd cmd
;
975 struct lttng_viewer_get_metadata rq
;
976 struct lttng_viewer_metadata_packet rp
;
979 struct lttng_live_session
*session
= trace
->session
;
980 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
981 session
->lttng_live_msg_iter
;
982 struct lttng_live_metadata
*metadata
= trace
->metadata
;
983 struct live_viewer_connection
*viewer_connection
=
984 lttng_live_msg_iter
->viewer_connection
;
985 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
986 char cmd_buf
[cmd_buf_len
];
988 rq
.stream_id
= htobe64(metadata
->stream_id
);
989 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_METADATA
);
990 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
991 cmd
.cmd_version
= htobe32(0);
994 * Merge the cmd and connection request to prevent a write-write
995 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
996 * second write to be performed quickly in presence of Nagle's algorithm.
998 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
999 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1000 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1001 if (ret_len
== BT_SOCKET_ERROR
) {
1002 BT_COMP_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg());
1006 BT_ASSERT(ret_len
== cmd_buf_len
);
1007 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1009 BT_COMP_LOGI("Remote side has closed connection");
1012 if (ret_len
== BT_SOCKET_ERROR
) {
1013 BT_COMP_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg());
1016 BT_ASSERT(ret_len
== sizeof(rp
));
1018 switch (be32toh(rp
.status
)) {
1019 case LTTNG_VIEWER_METADATA_OK
:
1020 BT_COMP_LOGD("get_metadata : OK");
1022 case LTTNG_VIEWER_NO_NEW_METADATA
:
1023 BT_COMP_LOGD("get_metadata : NO NEW");
1026 case LTTNG_VIEWER_METADATA_ERR
:
1027 BT_COMP_LOGD("get_metadata : ERR");
1030 BT_COMP_LOGD("get_metadata : UNKNOWN");
1034 len
= be64toh(rp
.len
);
1035 BT_COMP_LOGD("Writing %" PRIu64
" bytes to metadata", len
);
1040 data
= calloc(1, len
);
1042 BT_COMP_LOGE("relay data calloc: %s", strerror(errno
));
1045 ret_len
= lttng_live_recv(viewer_connection
, data
, len
);
1047 BT_COMP_LOGI("Remote side has closed connection");
1048 goto error_free_data
;
1050 if (ret_len
== BT_SOCKET_ERROR
) {
1051 BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1052 goto error_free_data
;
1054 BT_ASSERT(ret_len
== len
);
1057 ret_len
= fwrite(data
, 1, len
, fp
);
1058 } while (ret_len
< 0 && errno
== EINTR
);
1060 BT_COMP_LOGE("Writing in the metadata fp");
1061 goto error_free_data
;
1063 BT_ASSERT(ret_len
== len
);
1076 * Assign the fields from a lttng_viewer_index to a packet_index.
1079 void lttng_index_to_packet_index(struct lttng_viewer_index
*lindex
,
1080 struct packet_index
*pindex
)
1085 pindex
->offset
= be64toh(lindex
->offset
);
1086 pindex
->packet_size
= be64toh(lindex
->packet_size
);
1087 pindex
->content_size
= be64toh(lindex
->content_size
);
1088 pindex
->ts_cycles
.timestamp_begin
= be64toh(lindex
->timestamp_begin
);
1089 pindex
->ts_cycles
.timestamp_end
= be64toh(lindex
->timestamp_end
);
1090 pindex
->events_discarded
= be64toh(lindex
->events_discarded
);
1094 enum lttng_live_iterator_status
lttng_live_get_next_index(
1095 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1096 struct lttng_live_stream_iterator
*stream
,
1097 struct packet_index
*index
)
1099 struct lttng_viewer_cmd cmd
;
1100 struct lttng_viewer_get_next_index rq
;
1101 struct lttng_viewer_index rp
;
1102 enum lttng_live_iterator_status retstatus
= LTTNG_LIVE_ITERATOR_STATUS_OK
;
1103 struct live_viewer_connection
*viewer_connection
=
1104 lttng_live_msg_iter
->viewer_connection
;
1105 struct lttng_live_trace
*trace
= stream
->trace
;
1106 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1107 char cmd_buf
[cmd_buf_len
];
1108 uint32_t flags
, status
;
1111 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEXT_INDEX
);
1112 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1113 cmd
.cmd_version
= htobe32(0);
1116 memset(&rq
, 0, sizeof(rq
));
1117 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1120 * Merge the cmd and connection request to prevent a write-write
1121 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1122 * second write to be performed quickly in presence of Nagle's algorithm.
1124 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1125 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1126 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1127 if (ret_len
== BT_SOCKET_ERROR
) {
1128 BT_COMP_LOGE("Error sending get_next_index request: %s",
1129 bt_socket_errormsg());
1133 BT_ASSERT(ret_len
== cmd_buf_len
);
1134 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1136 BT_COMP_LOGI("Remote side has closed connection");
1139 if (ret_len
== BT_SOCKET_ERROR
) {
1140 BT_COMP_LOGE("Error receiving get_next_index response: %s",
1141 bt_socket_errormsg());
1144 BT_ASSERT(ret_len
== sizeof(rp
));
1146 flags
= be32toh(rp
.flags
);
1147 status
= be32toh(rp
.status
);
1150 case LTTNG_VIEWER_INDEX_INACTIVE
:
1152 uint64_t ctf_stream_class_id
;
1154 BT_COMP_LOGD("get_next_index: inactive");
1155 memset(index
, 0, sizeof(struct packet_index
));
1156 index
->ts_cycles
.timestamp_end
= be64toh(rp
.timestamp_end
);
1157 stream
->current_inactivity_ts
= index
->ts_cycles
.timestamp_end
;
1158 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1159 if (stream
->ctf_stream_class_id
!= -1ULL) {
1160 BT_ASSERT(stream
->ctf_stream_class_id
==
1161 ctf_stream_class_id
);
1163 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1165 stream
->state
= LTTNG_LIVE_STREAM_QUIESCENT
;
1168 case LTTNG_VIEWER_INDEX_OK
:
1170 uint64_t ctf_stream_class_id
;
1172 BT_COMP_LOGD("get_next_index: OK");
1173 lttng_index_to_packet_index(&rp
, index
);
1174 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1175 if (stream
->ctf_stream_class_id
!= -1ULL) {
1176 BT_ASSERT(stream
->ctf_stream_class_id
==
1177 ctf_stream_class_id
);
1179 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1182 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_DATA
;
1184 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1185 BT_COMP_LOGD("get_next_index: new metadata needed");
1186 trace
->new_metadata_needed
= true;
1188 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1189 BT_COMP_LOGD("get_next_index: new streams needed");
1190 lttng_live_need_new_streams(lttng_live_msg_iter
);
1194 case LTTNG_VIEWER_INDEX_RETRY
:
1195 BT_COMP_LOGD("get_next_index: retry");
1196 memset(index
, 0, sizeof(struct packet_index
));
1197 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1198 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1200 case LTTNG_VIEWER_INDEX_HUP
:
1201 BT_COMP_LOGD("get_next_index: stream hung up");
1202 memset(index
, 0, sizeof(struct packet_index
));
1203 index
->offset
= EOF
;
1204 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1205 stream
->state
= LTTNG_LIVE_STREAM_EOF
;
1206 stream
->has_stream_hung_up
= true;
1208 case LTTNG_VIEWER_INDEX_ERR
:
1209 BT_COMP_LOGE("get_next_index: error");
1210 memset(index
, 0, sizeof(struct packet_index
));
1211 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1214 BT_COMP_LOGE("get_next_index: unknown value");
1215 memset(index
, 0, sizeof(struct packet_index
));
1216 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1223 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
1224 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1226 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1232 enum bt_msg_iter_medium_status
lttng_live_get_stream_bytes(
1233 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1234 struct lttng_live_stream_iterator
*stream
, uint8_t *buf
,
1235 uint64_t offset
, uint64_t req_len
, uint64_t *recv_len
)
1237 enum bt_msg_iter_medium_status retstatus
= BT_MSG_ITER_MEDIUM_STATUS_OK
;
1238 struct lttng_viewer_trace_packet rp
;
1239 struct lttng_viewer_cmd cmd
;
1240 struct lttng_viewer_get_packet rq
;
1241 struct live_viewer_connection
*viewer_connection
=
1242 lttng_live_msg_iter
->viewer_connection
;
1243 struct lttng_live_trace
*trace
= stream
->trace
;
1244 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1245 char cmd_buf
[cmd_buf_len
];
1246 uint32_t flags
, status
;
1249 BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64
", req_len=%" PRIu64
,
1251 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_PACKET
);
1252 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1253 cmd
.cmd_version
= htobe32(0);
1255 memset(&rq
, 0, sizeof(rq
));
1256 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1257 rq
.offset
= htobe64(offset
);
1258 rq
.len
= htobe32(req_len
);
1261 * Merge the cmd and connection request to prevent a write-write
1262 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1263 * second write to be performed quickly in presence of Nagle's algorithm.
1265 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1266 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1267 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1268 if (ret_len
== BT_SOCKET_ERROR
) {
1269 BT_COMP_LOGE("Error sending get_data request: %s", bt_socket_errormsg());
1273 BT_ASSERT(ret_len
== cmd_buf_len
);
1274 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1276 BT_COMP_LOGI("Remote side has closed connection");
1279 if (ret_len
== BT_SOCKET_ERROR
) {
1280 BT_COMP_LOGE("Error receiving get_data response: %s", bt_socket_errormsg());
1283 if (ret_len
!= sizeof(rp
)) {
1284 BT_COMP_LOGE("get_data_packet: expected %zu"
1285 ", received %zd", sizeof(rp
),
1290 flags
= be32toh(rp
.flags
);
1291 status
= be32toh(rp
.status
);
1294 case LTTNG_VIEWER_GET_PACKET_OK
:
1295 req_len
= be32toh(rp
.len
);
1296 BT_COMP_LOGD("get_data_packet: Ok, packet size : %" PRIu64
"", req_len
);
1298 case LTTNG_VIEWER_GET_PACKET_RETRY
:
1299 /* Unimplemented by relay daemon */
1300 BT_COMP_LOGD("get_data_packet: retry");
1301 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1303 case LTTNG_VIEWER_GET_PACKET_ERR
:
1304 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1305 BT_COMP_LOGD("get_data_packet: new metadata needed, try again later");
1306 trace
->new_metadata_needed
= true;
1308 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1309 BT_COMP_LOGD("get_data_packet: new streams needed, try again later");
1310 lttng_live_need_new_streams(lttng_live_msg_iter
);
1312 if (flags
& (LTTNG_VIEWER_FLAG_NEW_METADATA
1313 | LTTNG_VIEWER_FLAG_NEW_STREAM
)) {
1314 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1317 BT_COMP_LOGE("get_data_packet: error");
1319 case LTTNG_VIEWER_GET_PACKET_EOF
:
1320 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_EOF
;
1323 BT_COMP_LOGE("get_data_packet: unknown");
1331 ret_len
= lttng_live_recv(viewer_connection
, buf
, req_len
);
1333 BT_COMP_LOGI("Remote side has closed connection");
1336 if (ret_len
== BT_SOCKET_ERROR
) {
1337 BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1340 BT_ASSERT(ret_len
== req_len
);
1341 *recv_len
= ret_len
;
1346 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
1347 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1349 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_ERROR
;
1355 * Request new streams for a session.
1358 enum lttng_live_iterator_status
lttng_live_get_new_streams(
1359 struct lttng_live_session
*session
)
1361 enum lttng_live_iterator_status status
=
1362 LTTNG_LIVE_ITERATOR_STATUS_OK
;
1363 struct lttng_viewer_cmd cmd
;
1364 struct lttng_viewer_new_streams_request rq
;
1365 struct lttng_viewer_new_streams_response rp
;
1366 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1367 session
->lttng_live_msg_iter
;
1368 struct live_viewer_connection
*viewer_connection
=
1369 lttng_live_msg_iter
->viewer_connection
;
1370 uint32_t streams_count
;
1371 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1372 char cmd_buf
[cmd_buf_len
];
1375 if (!session
->new_streams_needed
) {
1376 return LTTNG_LIVE_ITERATOR_STATUS_OK
;
1379 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEW_STREAMS
);
1380 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1381 cmd
.cmd_version
= htobe32(0);
1383 memset(&rq
, 0, sizeof(rq
));
1384 rq
.session_id
= htobe64(session
->id
);
1387 * Merge the cmd and connection request to prevent a write-write
1388 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1389 * second write to be performed quickly in presence of Nagle's algorithm.
1391 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1392 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1393 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1394 if (ret_len
== BT_SOCKET_ERROR
) {
1395 BT_COMP_LOGE("Error sending get_new_streams request: %s",
1396 bt_socket_errormsg());
1400 BT_ASSERT(ret_len
== cmd_buf_len
);
1401 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1403 BT_COMP_LOGI("Remote side has closed connection");
1406 if (ret_len
== BT_SOCKET_ERROR
) {
1407 BT_COMP_LOGE("Error receiving get_new_streams response");
1410 BT_ASSERT(ret_len
== sizeof(rp
));
1412 streams_count
= be32toh(rp
.streams_count
);
1414 switch(be32toh(rp
.status
)) {
1415 case LTTNG_VIEWER_NEW_STREAMS_OK
:
1416 session
->new_streams_needed
= false;
1418 case LTTNG_VIEWER_NEW_STREAMS_NO_NEW
:
1419 session
->new_streams_needed
= false;
1421 case LTTNG_VIEWER_NEW_STREAMS_HUP
:
1422 session
->new_streams_needed
= false;
1423 session
->closed
= true;
1424 status
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1426 case LTTNG_VIEWER_NEW_STREAMS_ERR
:
1427 BT_COMP_LOGE("get_new_streams error");
1430 BT_COMP_LOGE("Unknown return code %u", be32toh(rp
.status
));
1434 if (receive_streams(session
, streams_count
)) {
1441 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
1442 status
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1444 status
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1450 struct live_viewer_connection
*live_viewer_connection_create(
1451 const char *url
, bool in_query
,
1452 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1453 bt_logging_level log_level
)
1455 struct live_viewer_connection
*viewer_connection
;
1457 viewer_connection
= g_new0(struct live_viewer_connection
, 1);
1459 if (bt_socket_init(log_level
) != 0) {
1463 viewer_connection
->log_level
= log_level
;
1465 if (lttng_live_msg_iter
) {
1466 viewer_connection
->self_comp
= lttng_live_msg_iter
->self_comp
;
1469 bt_object_init_shared(&viewer_connection
->obj
, connection_release
);
1470 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
1471 viewer_connection
->port
= -1;
1472 viewer_connection
->in_query
= in_query
;
1473 viewer_connection
->lttng_live_msg_iter
= lttng_live_msg_iter
;
1474 viewer_connection
->url
= g_string_new(url
);
1475 if (!viewer_connection
->url
) {
1479 BT_COMP_LOGI("Establishing connection to url \"%s\"...", url
);
1480 if (lttng_live_connect_viewer(viewer_connection
)) {
1483 BT_COMP_LOGI("Connection to url \"%s\" is established", url
);
1484 return viewer_connection
;
1487 BT_COMP_LOGW("Failure to establish connection to url \"%s\"", url
);
1489 if (viewer_connection
) {
1490 live_viewer_connection_destroy(viewer_connection
);
1497 void live_viewer_connection_destroy(
1498 struct live_viewer_connection
*viewer_connection
)
1500 BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection
->url
->str
);
1501 lttng_live_disconnect_viewer(viewer_connection
);
1502 if (viewer_connection
->url
) {
1503 g_string_free(viewer_connection
->url
, true);
1505 if (viewer_connection
->relay_hostname
) {
1506 g_string_free(viewer_connection
->relay_hostname
, true);
1508 if (viewer_connection
->target_hostname
) {
1509 g_string_free(viewer_connection
->target_hostname
, true);
1511 if (viewer_connection
->session_name
) {
1512 g_string_free(viewer_connection
->session_name
, true);
1514 g_free(viewer_connection
);