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
)
308 bt_value
*map
= NULL
;
309 bt_value
*hostname
= NULL
;
310 bt_value
*session_name
= NULL
;
311 bt_value
*btval
= NULL
;
314 len
= bt_value_array_get_length(results
);
316 BT_COMP_LOGE_STR("Error getting size of array.");
320 for (i
= 0; i
< len
; i
++) {
321 const char *hostname_str
= NULL
;
322 const char *session_name_str
= NULL
;
324 map
= bt_value_array_borrow_element_by_index(results
, (size_t) i
);
326 BT_COMP_LOGE_STR("Error borrowing map.");
330 hostname
= bt_value_map_borrow_entry_value(map
, "target-hostname");
332 BT_COMP_LOGE_STR("Error borrowing \"target-hostname\" entry.");
336 session_name
= bt_value_map_borrow_entry_value(map
, "session-name");
338 BT_COMP_LOGE_STR("Error borrowing \"session-name\" entry.");
342 hostname_str
= bt_value_string_get(hostname
);
343 session_name_str
= bt_value_string_get(session_name
);
345 if (strcmp(session
->hostname
, hostname_str
) == 0
346 && strcmp(session
->session_name
, session_name_str
) == 0) {
348 uint32_t streams
= be32toh(session
->streams
);
349 uint32_t clients
= be32toh(session
->clients
);
353 btval
= bt_value_map_borrow_entry_value(map
, "stream-count");
355 BT_COMP_LOGE_STR("Error borrowing \"stream-count\" entry.");
359 val
= bt_value_integer_unsigned_get(btval
);
362 bt_value_integer_unsigned_set(btval
, val
);
364 btval
= bt_value_map_borrow_entry_value(map
, "client-count");
366 BT_COMP_LOGE_STR("Error borrowing \"client-count\" entry.");
370 val
= bt_value_integer_unsigned_get(btval
);
372 val
= bt_max_t(int64_t, clients
, val
);
373 bt_value_integer_unsigned_set(btval
, val
);
386 int list_append_session(bt_value
*results
,
388 const struct lttng_viewer_session
*session
,
389 struct live_viewer_connection
*viewer_connection
)
392 bt_value_map_insert_entry_status insert_status
;
393 bt_value_array_append_element_status append_status
;
394 bt_value
*map
= NULL
;
399 * If the session already exists, add the stream count to it,
400 * and do max of client counts.
402 ret
= list_update_session(results
, session
, &found
, viewer_connection
);
407 map
= bt_value_map_create();
409 BT_COMP_LOGE_STR("Error creating map value.");
414 if (base_url
->len
< 1) {
415 BT_COMP_LOGE_STR("Error: base_url length smaller than 1.");
423 url
= g_string_new(base_url
->str
);
424 g_string_append(url
, "/host/");
425 g_string_append(url
, session
->hostname
);
426 g_string_append_c(url
, '/');
427 g_string_append(url
, session
->session_name
);
429 insert_status
= bt_value_map_insert_string_entry(map
, "url", url
->str
);
430 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
431 BT_COMP_LOGE_STR("Error inserting \"url\" entry.");
437 * key = "target-hostname",
440 insert_status
= bt_value_map_insert_string_entry(map
, "target-hostname",
442 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
443 BT_COMP_LOGE_STR("Error inserting \"target-hostname\" entry.");
449 * key = "session-name",
452 insert_status
= bt_value_map_insert_string_entry(map
, "session-name",
453 session
->session_name
);
454 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
455 BT_COMP_LOGE_STR("Error inserting \"session-name\" entry.");
465 uint32_t live_timer
= be32toh(session
->live_timer
);
467 insert_status
= bt_value_map_insert_unsigned_integer_entry(
468 map
, "timer-us", live_timer
);
469 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
470 BT_COMP_LOGE_STR("Error inserting \"timer-us\" entry.");
477 * key = "stream-count",
481 uint32_t streams
= be32toh(session
->streams
);
483 insert_status
= bt_value_map_insert_unsigned_integer_entry(map
,
484 "stream-count", streams
);
485 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
486 BT_COMP_LOGE_STR("Error inserting \"stream-count\" entry.");
493 * key = "client-count",
497 uint32_t clients
= be32toh(session
->clients
);
499 insert_status
= bt_value_map_insert_unsigned_integer_entry(map
,
500 "client-count", clients
);
501 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
502 BT_COMP_LOGE_STR("Error inserting \"client-count\" entry.");
508 append_status
= bt_value_array_append_element(results
, map
);
509 if (append_status
!= BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK
) {
510 BT_COMP_LOGE_STR("Error appending map to results.");
516 g_string_free(url
, true);
518 BT_VALUE_PUT_REF_AND_RESET(map
);
523 * Data structure returned:
534 * key = "target-hostname",
538 * key = "session-name",
546 * key = "stream-count",
550 * key = "client-count",
559 bt_component_class_query_method_status
live_viewer_connection_list_sessions(
560 struct live_viewer_connection
*viewer_connection
,
561 const bt_value
**user_result
)
563 bt_component_class_query_method_status status
=
564 BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK
;
565 bt_value
*result
= NULL
;
566 struct lttng_viewer_cmd cmd
;
567 struct lttng_viewer_list_sessions list
;
568 uint32_t i
, sessions_count
;
571 result
= bt_value_array_create();
573 BT_COMP_LOGE("Error creating array");
574 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR
;
578 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
579 cmd
.data_size
= htobe64((uint64_t) 0);
580 cmd
.cmd_version
= htobe32(0);
582 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
583 if (ret_len
== BT_SOCKET_ERROR
) {
584 BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg());
585 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
588 BT_ASSERT(ret_len
== sizeof(cmd
));
590 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
592 BT_COMP_LOGI("Remote side has closed connection");
593 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
596 if (ret_len
== BT_SOCKET_ERROR
) {
597 BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg());
598 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
601 BT_ASSERT(ret_len
== sizeof(list
));
603 sessions_count
= be32toh(list
.sessions_count
);
604 for (i
= 0; i
< sessions_count
; i
++) {
605 struct lttng_viewer_session lsession
;
607 ret_len
= lttng_live_recv(viewer_connection
, &lsession
,
610 BT_COMP_LOGI("Remote side has closed connection");
611 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
614 if (ret_len
== BT_SOCKET_ERROR
) {
615 BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg());
616 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
619 BT_ASSERT(ret_len
== sizeof(lsession
));
620 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
621 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
622 if (list_append_session(result
, viewer_connection
->url
,
623 &lsession
, viewer_connection
)) {
624 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
629 *user_result
= result
;
632 BT_VALUE_PUT_REF_AND_RESET(result
);
638 int lttng_live_query_session_ids(struct lttng_live_msg_iter
*lttng_live_msg_iter
)
640 struct lttng_viewer_cmd cmd
;
641 struct lttng_viewer_list_sessions list
;
642 struct lttng_viewer_session lsession
;
643 uint32_t i
, sessions_count
;
646 struct live_viewer_connection
*viewer_connection
=
647 lttng_live_msg_iter
->viewer_connection
;
649 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
650 cmd
.data_size
= htobe64((uint64_t) 0);
651 cmd
.cmd_version
= htobe32(0);
653 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
654 if (ret_len
== BT_SOCKET_ERROR
) {
655 BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg());
658 BT_ASSERT(ret_len
== sizeof(cmd
));
660 ret_len
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
662 BT_COMP_LOGI("Remote side has closed connection");
665 if (ret_len
== BT_SOCKET_ERROR
) {
666 BT_COMP_LOGE("Error receiving session list: %s", bt_socket_errormsg());
669 BT_ASSERT(ret_len
== sizeof(list
));
671 sessions_count
= be32toh(list
.sessions_count
);
672 for (i
= 0; i
< sessions_count
; i
++) {
673 ret_len
= lttng_live_recv(viewer_connection
,
674 &lsession
, sizeof(lsession
));
676 BT_COMP_LOGI("Remote side has closed connection");
679 if (ret_len
== BT_SOCKET_ERROR
) {
680 BT_COMP_LOGE("Error receiving session: %s", bt_socket_errormsg());
683 BT_ASSERT(ret_len
== sizeof(lsession
));
684 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
685 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
686 session_id
= be64toh(lsession
.id
);
688 BT_COMP_LOGI("Adding session %" PRIu64
" hostname: %s session_name: %s",
689 session_id
, lsession
.hostname
, lsession
.session_name
);
691 if ((strncmp(lsession
.session_name
,
692 viewer_connection
->session_name
->str
,
693 LTTNG_VIEWER_NAME_MAX
) == 0) && (strncmp(lsession
.hostname
,
694 viewer_connection
->target_hostname
->str
,
695 LTTNG_VIEWER_HOST_NAME_MAX
) == 0)) {
696 if (lttng_live_add_session(lttng_live_msg_iter
, session_id
,
698 lsession
.session_name
)) {
707 BT_COMP_LOGE("Unable to query session ids");
712 int lttng_live_create_viewer_session(
713 struct lttng_live_msg_iter
*lttng_live_msg_iter
)
715 struct lttng_viewer_cmd cmd
;
716 struct lttng_viewer_create_session_response resp
;
718 struct live_viewer_connection
*viewer_connection
=
719 lttng_live_msg_iter
->viewer_connection
;
721 cmd
.cmd
= htobe32(LTTNG_VIEWER_CREATE_SESSION
);
722 cmd
.data_size
= htobe64((uint64_t) 0);
723 cmd
.cmd_version
= htobe32(0);
725 ret_len
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
726 if (ret_len
== BT_SOCKET_ERROR
) {
727 BT_COMP_LOGE("Error sending cmd: %s", bt_socket_errormsg());
730 BT_ASSERT(ret_len
== sizeof(cmd
));
732 ret_len
= lttng_live_recv(viewer_connection
, &resp
, sizeof(resp
));
734 BT_COMP_LOGI("Remote side has closed connection");
737 if (ret_len
== BT_SOCKET_ERROR
) {
738 BT_COMP_LOGE("Error receiving create session reply: %s", bt_socket_errormsg());
741 BT_ASSERT(ret_len
== sizeof(resp
));
743 if (be32toh(resp
.status
) != LTTNG_VIEWER_CREATE_SESSION_OK
) {
744 BT_COMP_LOGE("Error creating viewer session");
747 if (lttng_live_query_session_ids(lttng_live_msg_iter
)) {
758 int receive_streams(struct lttng_live_session
*session
,
759 uint32_t stream_count
)
763 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
764 session
->lttng_live_msg_iter
;
765 struct live_viewer_connection
*viewer_connection
=
766 lttng_live_msg_iter
->viewer_connection
;
768 BT_COMP_LOGI("Getting %" PRIu32
" new streams:", stream_count
);
769 for (i
= 0; i
< stream_count
; i
++) {
770 struct lttng_viewer_stream stream
;
771 struct lttng_live_stream_iterator
*live_stream
;
773 uint64_t ctf_trace_id
;
775 ret_len
= lttng_live_recv(viewer_connection
, &stream
, sizeof(stream
));
777 BT_COMP_LOGI("Remote side has closed connection");
780 if (ret_len
== BT_SOCKET_ERROR
) {
781 BT_COMP_LOGE("Error receiving stream");
784 BT_ASSERT(ret_len
== sizeof(stream
));
785 stream
.path_name
[LTTNG_VIEWER_PATH_MAX
- 1] = '\0';
786 stream
.channel_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
787 stream_id
= be64toh(stream
.id
);
788 ctf_trace_id
= be64toh(stream
.ctf_trace_id
);
790 if (stream
.metadata_flag
) {
791 BT_COMP_LOGI(" metadata stream %" PRIu64
" : %s/%s",
792 stream_id
, stream
.path_name
, stream
.channel_name
);
793 if (lttng_live_metadata_create_stream(session
,
794 ctf_trace_id
, stream_id
,
796 BT_COMP_LOGE("Error creating metadata stream");
800 session
->lazy_stream_msg_init
= true;
802 BT_COMP_LOGI(" stream %" PRIu64
" : %s/%s",
803 stream_id
, stream
.path_name
, stream
.channel_name
);
804 live_stream
= lttng_live_stream_iterator_create(session
,
805 ctf_trace_id
, stream_id
);
807 BT_COMP_LOGE("Error creating streamn");
819 int lttng_live_attach_session(struct lttng_live_session
*session
)
821 struct lttng_viewer_cmd cmd
;
822 struct lttng_viewer_attach_session_request rq
;
823 struct lttng_viewer_attach_session_response rp
;
824 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
825 session
->lttng_live_msg_iter
;
826 struct live_viewer_connection
*viewer_connection
=
827 lttng_live_msg_iter
->viewer_connection
;
828 uint64_t session_id
= session
->id
;
829 uint32_t streams_count
;
830 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
831 char cmd_buf
[cmd_buf_len
];
834 cmd
.cmd
= htobe32(LTTNG_VIEWER_ATTACH_SESSION
);
835 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
836 cmd
.cmd_version
= htobe32(0);
838 memset(&rq
, 0, sizeof(rq
));
839 rq
.session_id
= htobe64(session_id
);
840 // TODO: add cmd line parameter to select seek beginning
841 // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
842 rq
.seek
= htobe32(LTTNG_VIEWER_SEEK_LAST
);
845 * Merge the cmd and connection request to prevent a write-write
846 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
847 * second write to be performed quickly in presence of Nagle's algorithm.
849 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
850 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
851 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
852 if (ret_len
== BT_SOCKET_ERROR
) {
853 BT_COMP_LOGE("Error sending attach request: %s", bt_socket_errormsg());
857 BT_ASSERT(ret_len
== cmd_buf_len
);
858 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
860 BT_COMP_LOGI("Remote side has closed connection");
863 if (ret_len
== BT_SOCKET_ERROR
) {
864 BT_COMP_LOGE("Error receiving attach response: %s", bt_socket_errormsg());
867 BT_ASSERT(ret_len
== sizeof(rp
));
869 streams_count
= be32toh(rp
.streams_count
);
870 switch(be32toh(rp
.status
)) {
871 case LTTNG_VIEWER_ATTACH_OK
:
873 case LTTNG_VIEWER_ATTACH_UNK
:
874 BT_COMP_LOGW("Session id %" PRIu64
" is unknown", session_id
);
876 case LTTNG_VIEWER_ATTACH_ALREADY
:
877 BT_COMP_LOGW("There is already a viewer attached to this session");
879 case LTTNG_VIEWER_ATTACH_NOT_LIVE
:
880 BT_COMP_LOGW("Not a live session");
882 case LTTNG_VIEWER_ATTACH_SEEK_ERR
:
883 BT_COMP_LOGE("Wrong seek parameter");
886 BT_COMP_LOGE("Unknown attach return code %u", be32toh(rp
.status
));
890 /* We receive the initial list of streams. */
891 if (receive_streams(session
, streams_count
)) {
895 session
->attached
= true;
896 session
->new_streams_needed
= false;
905 int lttng_live_detach_session(struct lttng_live_session
*session
)
907 struct lttng_viewer_cmd cmd
;
908 struct lttng_viewer_detach_session_request rq
;
909 struct lttng_viewer_detach_session_response rp
;
911 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
912 session
->lttng_live_msg_iter
;
913 struct live_viewer_connection
*viewer_connection
=
914 lttng_live_msg_iter
->viewer_connection
;
915 uint64_t session_id
= session
->id
;
916 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
917 char cmd_buf
[cmd_buf_len
];
919 if (!session
->attached
) {
923 cmd
.cmd
= htobe32(LTTNG_VIEWER_DETACH_SESSION
);
924 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
925 cmd
.cmd_version
= htobe32(0);
927 memset(&rq
, 0, sizeof(rq
));
928 rq
.session_id
= htobe64(session_id
);
931 * Merge the cmd and connection request to prevent a write-write
932 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
933 * second write to be performed quickly in presence of Nagle's algorithm.
935 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
936 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
937 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
938 if (ret_len
== BT_SOCKET_ERROR
) {
939 BT_COMP_LOGE("Error sending detach request: %s", bt_socket_errormsg());
943 BT_ASSERT(ret_len
== cmd_buf_len
);
944 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
946 BT_COMP_LOGI("Remote side has closed connection");
949 if (ret_len
== BT_SOCKET_ERROR
) {
950 BT_COMP_LOGE("Error receiving detach response: %s", bt_socket_errormsg());
953 BT_ASSERT(ret_len
== sizeof(rp
));
955 switch(be32toh(rp
.status
)) {
956 case LTTNG_VIEWER_DETACH_SESSION_OK
:
958 case LTTNG_VIEWER_DETACH_SESSION_UNK
:
959 BT_COMP_LOGW("Session id %" PRIu64
" is unknown", session_id
);
961 case LTTNG_VIEWER_DETACH_SESSION_ERR
:
962 BT_COMP_LOGW("Error detaching session id %" PRIu64
"", session_id
);
965 BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp
.status
));
969 session
->attached
= false;
978 ssize_t
lttng_live_get_one_metadata_packet(struct lttng_live_trace
*trace
,
983 struct lttng_viewer_cmd cmd
;
984 struct lttng_viewer_get_metadata rq
;
985 struct lttng_viewer_metadata_packet rp
;
988 struct lttng_live_session
*session
= trace
->session
;
989 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
990 session
->lttng_live_msg_iter
;
991 struct lttng_live_metadata
*metadata
= trace
->metadata
;
992 struct live_viewer_connection
*viewer_connection
=
993 lttng_live_msg_iter
->viewer_connection
;
994 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
995 char cmd_buf
[cmd_buf_len
];
997 rq
.stream_id
= htobe64(metadata
->stream_id
);
998 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_METADATA
);
999 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1000 cmd
.cmd_version
= htobe32(0);
1003 * Merge the cmd and connection request to prevent a write-write
1004 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1005 * second write to be performed quickly in presence of Nagle's algorithm.
1007 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1008 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1009 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1010 if (ret_len
== BT_SOCKET_ERROR
) {
1011 BT_COMP_LOGE("Error sending get_metadata request: %s", bt_socket_errormsg());
1015 BT_ASSERT(ret_len
== cmd_buf_len
);
1016 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1018 BT_COMP_LOGI("Remote side has closed connection");
1021 if (ret_len
== BT_SOCKET_ERROR
) {
1022 BT_COMP_LOGE("Error receiving get_metadata response: %s", bt_socket_errormsg());
1025 BT_ASSERT(ret_len
== sizeof(rp
));
1027 switch (be32toh(rp
.status
)) {
1028 case LTTNG_VIEWER_METADATA_OK
:
1029 BT_COMP_LOGD("get_metadata : OK");
1031 case LTTNG_VIEWER_NO_NEW_METADATA
:
1032 BT_COMP_LOGD("get_metadata : NO NEW");
1035 case LTTNG_VIEWER_METADATA_ERR
:
1036 BT_COMP_LOGD("get_metadata : ERR");
1039 BT_COMP_LOGD("get_metadata : UNKNOWN");
1043 len
= be64toh(rp
.len
);
1044 BT_COMP_LOGD("Writing %" PRIu64
" bytes to metadata", len
);
1049 data
= calloc(1, len
);
1051 BT_COMP_LOGE("relay data calloc: %s", strerror(errno
));
1054 ret_len
= lttng_live_recv(viewer_connection
, data
, len
);
1056 BT_COMP_LOGI("Remote side has closed connection");
1057 goto error_free_data
;
1059 if (ret_len
== BT_SOCKET_ERROR
) {
1060 BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1061 goto error_free_data
;
1063 BT_ASSERT(ret_len
== len
);
1066 ret_len
= fwrite(data
, 1, len
, fp
);
1067 } while (ret_len
< 0 && errno
== EINTR
);
1069 BT_COMP_LOGE("Writing in the metadata fp");
1070 goto error_free_data
;
1072 BT_ASSERT(ret_len
== len
);
1085 * Assign the fields from a lttng_viewer_index to a packet_index.
1088 void lttng_index_to_packet_index(struct lttng_viewer_index
*lindex
,
1089 struct packet_index
*pindex
)
1094 pindex
->offset
= be64toh(lindex
->offset
);
1095 pindex
->packet_size
= be64toh(lindex
->packet_size
);
1096 pindex
->content_size
= be64toh(lindex
->content_size
);
1097 pindex
->ts_cycles
.timestamp_begin
= be64toh(lindex
->timestamp_begin
);
1098 pindex
->ts_cycles
.timestamp_end
= be64toh(lindex
->timestamp_end
);
1099 pindex
->events_discarded
= be64toh(lindex
->events_discarded
);
1103 enum lttng_live_iterator_status
lttng_live_get_next_index(
1104 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1105 struct lttng_live_stream_iterator
*stream
,
1106 struct packet_index
*index
)
1108 struct lttng_viewer_cmd cmd
;
1109 struct lttng_viewer_get_next_index rq
;
1110 struct lttng_viewer_index rp
;
1111 enum lttng_live_iterator_status retstatus
= LTTNG_LIVE_ITERATOR_STATUS_OK
;
1112 struct live_viewer_connection
*viewer_connection
=
1113 lttng_live_msg_iter
->viewer_connection
;
1114 struct lttng_live_trace
*trace
= stream
->trace
;
1115 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1116 char cmd_buf
[cmd_buf_len
];
1117 uint32_t flags
, status
;
1120 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEXT_INDEX
);
1121 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1122 cmd
.cmd_version
= htobe32(0);
1125 memset(&rq
, 0, sizeof(rq
));
1126 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1129 * Merge the cmd and connection request to prevent a write-write
1130 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1131 * second write to be performed quickly in presence of Nagle's algorithm.
1133 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1134 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1135 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1136 if (ret_len
== BT_SOCKET_ERROR
) {
1137 BT_COMP_LOGE("Error sending get_next_index request: %s",
1138 bt_socket_errormsg());
1142 BT_ASSERT(ret_len
== cmd_buf_len
);
1143 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1145 BT_COMP_LOGI("Remote side has closed connection");
1148 if (ret_len
== BT_SOCKET_ERROR
) {
1149 BT_COMP_LOGE("Error receiving get_next_index response: %s",
1150 bt_socket_errormsg());
1153 BT_ASSERT(ret_len
== sizeof(rp
));
1155 flags
= be32toh(rp
.flags
);
1156 status
= be32toh(rp
.status
);
1159 case LTTNG_VIEWER_INDEX_INACTIVE
:
1161 uint64_t ctf_stream_class_id
;
1163 BT_COMP_LOGD("get_next_index: inactive");
1164 memset(index
, 0, sizeof(struct packet_index
));
1165 index
->ts_cycles
.timestamp_end
= be64toh(rp
.timestamp_end
);
1166 stream
->current_inactivity_ts
= index
->ts_cycles
.timestamp_end
;
1167 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1168 if (stream
->ctf_stream_class_id
!= -1ULL) {
1169 BT_ASSERT(stream
->ctf_stream_class_id
==
1170 ctf_stream_class_id
);
1172 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1174 stream
->state
= LTTNG_LIVE_STREAM_QUIESCENT
;
1177 case LTTNG_VIEWER_INDEX_OK
:
1179 uint64_t ctf_stream_class_id
;
1181 BT_COMP_LOGD("get_next_index: OK");
1182 lttng_index_to_packet_index(&rp
, index
);
1183 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1184 if (stream
->ctf_stream_class_id
!= -1ULL) {
1185 BT_ASSERT(stream
->ctf_stream_class_id
==
1186 ctf_stream_class_id
);
1188 stream
->ctf_stream_class_id
= ctf_stream_class_id
;
1191 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_DATA
;
1193 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1194 BT_COMP_LOGD("get_next_index: new metadata needed");
1195 trace
->new_metadata_needed
= true;
1197 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1198 BT_COMP_LOGD("get_next_index: new streams needed");
1199 lttng_live_need_new_streams(lttng_live_msg_iter
);
1203 case LTTNG_VIEWER_INDEX_RETRY
:
1204 BT_COMP_LOGD("get_next_index: retry");
1205 memset(index
, 0, sizeof(struct packet_index
));
1206 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1207 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1209 case LTTNG_VIEWER_INDEX_HUP
:
1210 BT_COMP_LOGD("get_next_index: stream hung up");
1211 memset(index
, 0, sizeof(struct packet_index
));
1212 index
->offset
= EOF
;
1213 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1214 stream
->state
= LTTNG_LIVE_STREAM_EOF
;
1215 stream
->has_stream_hung_up
= true;
1217 case LTTNG_VIEWER_INDEX_ERR
:
1218 BT_COMP_LOGE("get_next_index: error");
1219 memset(index
, 0, sizeof(struct packet_index
));
1220 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1223 BT_COMP_LOGE("get_next_index: unknown value");
1224 memset(index
, 0, sizeof(struct packet_index
));
1225 stream
->state
= LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
;
1232 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
1233 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1235 retstatus
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1241 enum bt_msg_iter_medium_status
lttng_live_get_stream_bytes(
1242 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1243 struct lttng_live_stream_iterator
*stream
, uint8_t *buf
,
1244 uint64_t offset
, uint64_t req_len
, uint64_t *recv_len
)
1246 enum bt_msg_iter_medium_status retstatus
= BT_MSG_ITER_MEDIUM_STATUS_OK
;
1247 struct lttng_viewer_trace_packet rp
;
1248 struct lttng_viewer_cmd cmd
;
1249 struct lttng_viewer_get_packet rq
;
1250 struct live_viewer_connection
*viewer_connection
=
1251 lttng_live_msg_iter
->viewer_connection
;
1252 struct lttng_live_trace
*trace
= stream
->trace
;
1253 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1254 char cmd_buf
[cmd_buf_len
];
1255 uint32_t flags
, status
;
1258 BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64
", req_len=%" PRIu64
,
1260 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_PACKET
);
1261 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1262 cmd
.cmd_version
= htobe32(0);
1264 memset(&rq
, 0, sizeof(rq
));
1265 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1266 rq
.offset
= htobe64(offset
);
1267 rq
.len
= htobe32(req_len
);
1270 * Merge the cmd and connection request to prevent a write-write
1271 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1272 * second write to be performed quickly in presence of Nagle's algorithm.
1274 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1275 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1276 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1277 if (ret_len
== BT_SOCKET_ERROR
) {
1278 BT_COMP_LOGE("Error sending get_data request: %s", bt_socket_errormsg());
1282 BT_ASSERT(ret_len
== cmd_buf_len
);
1283 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1285 BT_COMP_LOGI("Remote side has closed connection");
1288 if (ret_len
== BT_SOCKET_ERROR
) {
1289 BT_COMP_LOGE("Error receiving get_data response: %s", bt_socket_errormsg());
1292 if (ret_len
!= sizeof(rp
)) {
1293 BT_COMP_LOGE("get_data_packet: expected %zu"
1294 ", received %zd", sizeof(rp
),
1299 flags
= be32toh(rp
.flags
);
1300 status
= be32toh(rp
.status
);
1303 case LTTNG_VIEWER_GET_PACKET_OK
:
1304 req_len
= be32toh(rp
.len
);
1305 BT_COMP_LOGD("get_data_packet: Ok, packet size : %" PRIu64
"", req_len
);
1307 case LTTNG_VIEWER_GET_PACKET_RETRY
:
1308 /* Unimplemented by relay daemon */
1309 BT_COMP_LOGD("get_data_packet: retry");
1310 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1312 case LTTNG_VIEWER_GET_PACKET_ERR
:
1313 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1314 BT_COMP_LOGD("get_data_packet: new metadata needed, try again later");
1315 trace
->new_metadata_needed
= true;
1317 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1318 BT_COMP_LOGD("get_data_packet: new streams needed, try again later");
1319 lttng_live_need_new_streams(lttng_live_msg_iter
);
1321 if (flags
& (LTTNG_VIEWER_FLAG_NEW_METADATA
1322 | LTTNG_VIEWER_FLAG_NEW_STREAM
)) {
1323 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1326 BT_COMP_LOGE("get_data_packet: error");
1328 case LTTNG_VIEWER_GET_PACKET_EOF
:
1329 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_EOF
;
1332 BT_COMP_LOGE("get_data_packet: unknown");
1340 ret_len
= lttng_live_recv(viewer_connection
, buf
, req_len
);
1342 BT_COMP_LOGI("Remote side has closed connection");
1345 if (ret_len
== BT_SOCKET_ERROR
) {
1346 BT_COMP_LOGE("Error receiving trace packet: %s", bt_socket_errormsg());
1349 BT_ASSERT(ret_len
== req_len
);
1350 *recv_len
= ret_len
;
1355 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
1356 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1358 retstatus
= BT_MSG_ITER_MEDIUM_STATUS_ERROR
;
1364 * Request new streams for a session.
1367 enum lttng_live_iterator_status
lttng_live_get_new_streams(
1368 struct lttng_live_session
*session
)
1370 enum lttng_live_iterator_status status
=
1371 LTTNG_LIVE_ITERATOR_STATUS_OK
;
1372 struct lttng_viewer_cmd cmd
;
1373 struct lttng_viewer_new_streams_request rq
;
1374 struct lttng_viewer_new_streams_response rp
;
1375 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1376 session
->lttng_live_msg_iter
;
1377 struct live_viewer_connection
*viewer_connection
=
1378 lttng_live_msg_iter
->viewer_connection
;
1379 uint32_t streams_count
;
1380 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1381 char cmd_buf
[cmd_buf_len
];
1384 if (!session
->new_streams_needed
) {
1385 return LTTNG_LIVE_ITERATOR_STATUS_OK
;
1388 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEW_STREAMS
);
1389 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1390 cmd
.cmd_version
= htobe32(0);
1392 memset(&rq
, 0, sizeof(rq
));
1393 rq
.session_id
= htobe64(session
->id
);
1396 * Merge the cmd and connection request to prevent a write-write
1397 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1398 * second write to be performed quickly in presence of Nagle's algorithm.
1400 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1401 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1402 ret_len
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1403 if (ret_len
== BT_SOCKET_ERROR
) {
1404 BT_COMP_LOGE("Error sending get_new_streams request: %s",
1405 bt_socket_errormsg());
1409 BT_ASSERT(ret_len
== cmd_buf_len
);
1410 ret_len
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1412 BT_COMP_LOGI("Remote side has closed connection");
1415 if (ret_len
== BT_SOCKET_ERROR
) {
1416 BT_COMP_LOGE("Error receiving get_new_streams response");
1419 BT_ASSERT(ret_len
== sizeof(rp
));
1421 streams_count
= be32toh(rp
.streams_count
);
1423 switch(be32toh(rp
.status
)) {
1424 case LTTNG_VIEWER_NEW_STREAMS_OK
:
1425 session
->new_streams_needed
= false;
1427 case LTTNG_VIEWER_NEW_STREAMS_NO_NEW
:
1428 session
->new_streams_needed
= false;
1430 case LTTNG_VIEWER_NEW_STREAMS_HUP
:
1431 session
->new_streams_needed
= false;
1432 session
->closed
= true;
1433 status
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1435 case LTTNG_VIEWER_NEW_STREAMS_ERR
:
1436 BT_COMP_LOGE("get_new_streams error");
1439 BT_COMP_LOGE("Unknown return code %u", be32toh(rp
.status
));
1443 if (receive_streams(session
, streams_count
)) {
1450 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
1451 status
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1453 status
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1459 struct live_viewer_connection
*live_viewer_connection_create(
1460 const char *url
, bool in_query
,
1461 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1462 bt_logging_level log_level
)
1464 struct live_viewer_connection
*viewer_connection
;
1466 viewer_connection
= g_new0(struct live_viewer_connection
, 1);
1468 if (bt_socket_init(log_level
) != 0) {
1472 viewer_connection
->log_level
= log_level
;
1474 if (lttng_live_msg_iter
) {
1475 viewer_connection
->self_comp
= lttng_live_msg_iter
->self_comp
;
1478 bt_object_init_shared(&viewer_connection
->obj
, connection_release
);
1479 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
1480 viewer_connection
->port
= -1;
1481 viewer_connection
->in_query
= in_query
;
1482 viewer_connection
->lttng_live_msg_iter
= lttng_live_msg_iter
;
1483 viewer_connection
->url
= g_string_new(url
);
1484 if (!viewer_connection
->url
) {
1488 BT_COMP_LOGI("Establishing connection to url \"%s\"...", url
);
1489 if (lttng_live_connect_viewer(viewer_connection
)) {
1492 BT_COMP_LOGI("Connection to url \"%s\" is established", url
);
1493 return viewer_connection
;
1496 BT_COMP_LOGW("Failure to establish connection to url \"%s\"", url
);
1498 if (viewer_connection
) {
1499 live_viewer_connection_destroy(viewer_connection
);
1506 void live_viewer_connection_destroy(
1507 struct live_viewer_connection
*viewer_connection
)
1509 BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection
->url
->str
);
1510 lttng_live_disconnect_viewer(viewer_connection
);
1511 if (viewer_connection
->url
) {
1512 g_string_free(viewer_connection
->url
, true);
1514 if (viewer_connection
->relay_hostname
) {
1515 g_string_free(viewer_connection
->relay_hostname
, true);
1517 if (viewer_connection
->target_hostname
) {
1518 g_string_free(viewer_connection
->target_hostname
, true);
1520 if (viewer_connection
->session_name
) {
1521 g_string_free(viewer_connection
->session_name
, true);
1523 g_free(viewer_connection
);