2 * SPDX-License-Identifier: MIT
4 * Copyright 2019 Francis Deslauriers <francis.deslauriers@efficios.com>
5 * Copyright 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8 #define BT_COMP_LOG_SELF_COMP (viewer_connection->self_comp)
9 #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level)
10 #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER"
11 #include "logging/comp-logging.h"
18 #include <sys/types.h>
23 #include "compat/socket.h"
24 #include "compat/endian.h"
25 #include "compat/compiler.h"
26 #include "common/common.h"
27 #include <babeltrace2/babeltrace.h>
29 #include "lttng-live.hpp"
30 #include "viewer-connection.hpp"
31 #include "lttng-viewer-abi.hpp"
32 #include "data-stream.hpp"
33 #include "metadata.hpp"
35 #define viewer_handle_send_recv_status(_self_comp, _self_comp_class, \
36 _status, _action, _msg_str) \
39 case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED: \
41 case LTTNG_LIVE_VIEWER_STATUS_ERROR: \
42 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, \
43 _self_comp_class, "Error " _action " " _msg_str); \
50 #define viewer_handle_send_status(_self_comp, _self_comp_class, _status, _msg_str) \
51 viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \
54 #define viewer_handle_recv_status(_self_comp, _self_comp_class, _status, _msg_str) \
55 viewer_handle_send_recv_status(_self_comp, _self_comp_class, _status, \
56 "receiving", _msg_str)
58 #define LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(_self_comp, \
59 _self_comp_class, _msg, _fmt, ...) \
61 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(_self_comp, _self_comp_class, \
62 _msg ": %s" _fmt, bt_socket_errormsg(), ##__VA_ARGS__); \
66 const char *lttng_viewer_command_string(enum lttng_viewer_command cmd
)
69 case LTTNG_VIEWER_CONNECT
:
71 case LTTNG_VIEWER_LIST_SESSIONS
:
72 return "LIST_SESSIONS";
73 case LTTNG_VIEWER_ATTACH_SESSION
:
74 return "ATTACH_SESSION";
75 case LTTNG_VIEWER_GET_NEXT_INDEX
:
76 return "GET_NEXT_INDEX";
77 case LTTNG_VIEWER_GET_PACKET
:
79 case LTTNG_VIEWER_GET_METADATA
:
80 return "GET_METADATA";
81 case LTTNG_VIEWER_GET_NEW_STREAMS
:
82 return "GET_NEW_STREAMS";
83 case LTTNG_VIEWER_CREATE_SESSION
:
84 return "CREATE_SESSION";
85 case LTTNG_VIEWER_DETACH_SESSION
:
86 return "DETACH_SESSION";
93 const char *lttng_viewer_next_index_return_code_string(
94 enum lttng_viewer_next_index_return_code code
)
97 case LTTNG_VIEWER_INDEX_OK
:
99 case LTTNG_VIEWER_INDEX_RETRY
:
100 return "INDEX_RETRY";
101 case LTTNG_VIEWER_INDEX_HUP
:
103 case LTTNG_VIEWER_INDEX_ERR
:
105 case LTTNG_VIEWER_INDEX_INACTIVE
:
106 return "INDEX_INACTIVE";
107 case LTTNG_VIEWER_INDEX_EOF
:
115 const char *lttng_viewer_next_index_return_code_string(uint32_t code
)
117 return lttng_viewer_next_index_return_code_string(
118 (lttng_viewer_next_index_return_code
) code
);
122 const char *lttng_viewer_get_packet_return_code_string(
123 enum lttng_viewer_get_packet_return_code code
)
126 case LTTNG_VIEWER_GET_PACKET_OK
:
127 return "GET_PACKET_OK";
128 case LTTNG_VIEWER_GET_PACKET_RETRY
:
129 return "GET_PACKET_RETRY";
130 case LTTNG_VIEWER_GET_PACKET_ERR
:
131 return "GET_PACKET_ERR";
132 case LTTNG_VIEWER_GET_PACKET_EOF
:
133 return "GET_PACKET_EOF";
140 const char *lttng_viewer_get_packet_return_code_string(uint32_t code
)
142 return lttng_viewer_get_packet_return_code_string(
143 (lttng_viewer_get_packet_return_code
) code
);
147 const char *lttng_viewer_seek_string(enum lttng_viewer_seek seek
)
150 case LTTNG_VIEWER_SEEK_BEGINNING
:
151 return "SEEK_BEGINNING";
152 case LTTNG_VIEWER_SEEK_LAST
:
160 enum lttng_live_iterator_status
viewer_status_to_live_iterator_status(
161 enum lttng_live_viewer_status viewer_status
)
163 switch (viewer_status
) {
164 case LTTNG_LIVE_VIEWER_STATUS_OK
:
165 return LTTNG_LIVE_ITERATOR_STATUS_OK
;
166 case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
:
167 return LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
168 case LTTNG_LIVE_VIEWER_STATUS_ERROR
:
169 return LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
176 enum ctf_msg_iter_medium_status
viewer_status_to_ctf_msg_iter_medium_status(
177 enum lttng_live_viewer_status viewer_status
)
179 switch (viewer_status
) {
180 case LTTNG_LIVE_VIEWER_STATUS_OK
:
181 return CTF_MSG_ITER_MEDIUM_STATUS_OK
;
182 case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
:
183 return CTF_MSG_ITER_MEDIUM_STATUS_AGAIN
;
184 case LTTNG_LIVE_VIEWER_STATUS_ERROR
:
185 return CTF_MSG_ITER_MEDIUM_STATUS_ERROR
;
192 void viewer_connection_close_socket(
193 struct live_viewer_connection
*viewer_connection
)
195 bt_self_component_class
*self_comp_class
=
196 viewer_connection
->self_comp_class
;
197 bt_self_component
*self_comp
=
198 viewer_connection
->self_comp
;
199 int ret
= bt_socket_close(viewer_connection
->control_sock
);
201 BT_COMP_OR_COMP_CLASS_LOGW_ERRNO(
202 self_comp
, self_comp_class
,
203 "Error closing viewer connection socket: ", ".");
206 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
210 * This function receives a message from the Relay daemon.
211 * If it received the entire message, it returns _OK,
212 * If it's interrupted, it returns _INTERRUPTED,
213 * otherwise, it returns _ERROR.
216 enum lttng_live_viewer_status
lttng_live_recv(
217 struct live_viewer_connection
*viewer_connection
,
218 void *buf
, size_t len
)
221 bt_self_component_class
*self_comp_class
=
222 viewer_connection
->self_comp_class
;
223 bt_self_component
*self_comp
=
224 viewer_connection
->self_comp
;
225 size_t total_received
= 0, to_receive
= len
;
226 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
227 viewer_connection
->lttng_live_msg_iter
;
228 enum lttng_live_viewer_status status
;
229 BT_SOCKET sock
= viewer_connection
->control_sock
;
232 * Receive a message from the Relay.
235 received
= bt_socket_recv(sock
, (char *) buf
+ total_received
, to_receive
, 0);
236 if (received
== BT_SOCKET_ERROR
) {
237 if (bt_socket_interrupted()) {
238 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
240 * This interruption was due to a
241 * SIGINT and the graph is being torn
244 status
= LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
;
245 lttng_live_msg_iter
->was_interrupted
= true;
249 * A signal was received, but the graph
250 * is not being torn down. Carry on.
256 * For any other types of socket error, close
257 * the socket and return an error.
259 LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(
260 self_comp
, self_comp_class
,
261 "Error receiving from Relay", ".");
263 viewer_connection_close_socket(viewer_connection
);
264 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
267 } else if (received
== 0) {
269 * The recv() call returned 0. This means the
270 * connection was orderly shutdown from the other peer.
271 * If that happens when we are trying to receive
272 * a message from it, it means something when wrong.
273 * Close the socket and return an error.
275 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
276 self_comp_class
, "Remote side has closed connection");
277 viewer_connection_close_socket(viewer_connection
);
278 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
282 BT_ASSERT(received
<= to_receive
);
283 total_received
+= received
;
284 to_receive
-= received
;
286 } while (to_receive
> 0);
288 BT_ASSERT(total_received
== len
);
289 status
= LTTNG_LIVE_VIEWER_STATUS_OK
;
296 * This function sends a message to the Relay daemon.
297 * If it send the message, it returns _OK,
298 * If it's interrupted, it returns _INTERRUPTED,
299 * otherwise, it returns _ERROR.
302 enum lttng_live_viewer_status
lttng_live_send(
303 struct live_viewer_connection
*viewer_connection
,
304 const void *buf
, size_t len
)
306 enum lttng_live_viewer_status status
;
307 bt_self_component_class
*self_comp_class
=
308 viewer_connection
->self_comp_class
;
309 bt_self_component
*self_comp
=
310 viewer_connection
->self_comp
;
311 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
312 viewer_connection
->lttng_live_msg_iter
;
313 BT_SOCKET sock
= viewer_connection
->control_sock
;
314 size_t to_send
= len
;
315 ssize_t total_sent
= 0;
318 ssize_t sent
= bt_socket_send_nosigpipe(sock
, (char *) buf
+ total_sent
,
320 if (sent
== BT_SOCKET_ERROR
) {
321 if (bt_socket_interrupted()) {
322 if (lttng_live_graph_is_canceled(lttng_live_msg_iter
)) {
324 * This interruption was a SIGINT and
325 * the graph is being teared down.
327 status
= LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
;
328 lttng_live_msg_iter
->was_interrupted
= true;
332 * A signal was received, but the graph
333 * is not being teared down. Carry on.
339 * For any other types of socket error, close
340 * the socket and return an error.
342 LTTNG_LIVE_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE_ERRNO(
343 self_comp
, self_comp_class
,
344 "Error sending to Relay", ".");
346 viewer_connection_close_socket(viewer_connection
);
347 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
352 BT_ASSERT(sent
<= to_send
);
356 } while (to_send
> 0);
358 BT_ASSERT(total_sent
== len
);
359 status
= LTTNG_LIVE_VIEWER_STATUS_OK
;
366 int parse_url(struct live_viewer_connection
*viewer_connection
)
368 char error_buf
[256] = { 0 };
369 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
370 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
371 struct bt_common_lttng_live_url_parts lttng_live_url_parts
= { 0 };
373 const char *path
= viewer_connection
->url
->str
;
379 lttng_live_url_parts
= bt_common_parse_lttng_live_url(path
, error_buf
,
381 if (!lttng_live_url_parts
.proto
) {
382 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
383 self_comp_class
,"Invalid LTTng live URL format: %s",
387 viewer_connection
->proto
= lttng_live_url_parts
.proto
;
388 lttng_live_url_parts
.proto
= NULL
;
390 viewer_connection
->relay_hostname
= lttng_live_url_parts
.hostname
;
391 lttng_live_url_parts
.hostname
= NULL
;
393 if (lttng_live_url_parts
.port
>= 0) {
394 viewer_connection
->port
= lttng_live_url_parts
.port
;
396 viewer_connection
->port
= LTTNG_DEFAULT_NETWORK_VIEWER_PORT
;
399 viewer_connection
->target_hostname
= lttng_live_url_parts
.target_hostname
;
400 lttng_live_url_parts
.target_hostname
= NULL
;
402 if (lttng_live_url_parts
.session_name
) {
403 viewer_connection
->session_name
= lttng_live_url_parts
.session_name
;
404 lttng_live_url_parts
.session_name
= NULL
;
410 bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts
);
415 enum lttng_live_viewer_status
lttng_live_handshake(
416 struct live_viewer_connection
*viewer_connection
)
418 struct lttng_viewer_cmd cmd
;
419 struct lttng_viewer_connect connect
;
420 enum lttng_live_viewer_status status
;
421 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
422 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
423 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(connect
);
424 char cmd_buf
[cmd_buf_len
];
426 BT_COMP_OR_COMP_CLASS_LOGD(self_comp
, self_comp_class
,
427 "Handshaking with the relay daemon: cmd=%s, major-version=%u, minor-version=%u",
428 lttng_viewer_command_string(LTTNG_VIEWER_CONNECT
), LTTNG_LIVE_MAJOR
,
431 cmd
.cmd
= htobe32(LTTNG_VIEWER_CONNECT
);
432 cmd
.data_size
= htobe64((uint64_t) sizeof(connect
));
433 cmd
.cmd_version
= htobe32(0);
435 connect
.viewer_session_id
= -1ULL; /* will be set on recv */
436 connect
.major
= htobe32(LTTNG_LIVE_MAJOR
);
437 connect
.minor
= htobe32(LTTNG_LIVE_MINOR
);
438 connect
.type
= htobe32(LTTNG_VIEWER_CLIENT_COMMAND
);
441 * Merge the cmd and connection request to prevent a write-write
442 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
443 * second write to be performed quickly in presence of Nagle's algorithm
445 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
446 memcpy(cmd_buf
+ sizeof(cmd
), &connect
, sizeof(connect
));
448 status
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
449 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
450 viewer_handle_send_status(self_comp
, self_comp_class
,
451 status
, "viewer connect command");
455 status
= lttng_live_recv(viewer_connection
, &connect
, sizeof(connect
));
456 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
457 viewer_handle_recv_status(self_comp
, self_comp_class
,
458 status
, "viewer connect reply");
462 BT_COMP_OR_COMP_CLASS_LOGI(self_comp
, self_comp_class
,
463 "Received viewer session ID : %" PRIu64
,
464 (uint64_t) be64toh(connect
.viewer_session_id
));
465 BT_COMP_OR_COMP_CLASS_LOGI(self_comp
, self_comp_class
,
466 "Relayd version : %u.%u", be32toh(connect
.major
),
467 be32toh(connect
.minor
));
469 if (LTTNG_LIVE_MAJOR
!= be32toh(connect
.major
)) {
470 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
471 self_comp_class
, "Incompatible lttng-relayd protocol");
472 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
475 /* Use the smallest protocol version implemented. */
476 if (LTTNG_LIVE_MINOR
> be32toh(connect
.minor
)) {
477 viewer_connection
->minor
= be32toh(connect
.minor
);
479 viewer_connection
->minor
= LTTNG_LIVE_MINOR
;
481 viewer_connection
->major
= LTTNG_LIVE_MAJOR
;
483 status
= LTTNG_LIVE_VIEWER_STATUS_OK
;
492 enum lttng_live_viewer_status
lttng_live_connect_viewer(
493 struct live_viewer_connection
*viewer_connection
)
495 struct hostent
*host
;
496 struct sockaddr_in server_addr
;
497 enum lttng_live_viewer_status status
;
498 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
499 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
501 if (parse_url(viewer_connection
)) {
502 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
503 self_comp_class
, "Failed to parse URL");
504 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
508 BT_COMP_OR_COMP_CLASS_LOGD(self_comp
, self_comp_class
,
509 "Connecting to hostname : %s, port : %d, "
510 "target hostname : %s, session name : %s, proto : %s",
511 viewer_connection
->relay_hostname
->str
,
512 viewer_connection
->port
,
513 !viewer_connection
->target_hostname
?
514 "<none>" : viewer_connection
->target_hostname
->str
,
515 !viewer_connection
->session_name
?
516 "<none>" : viewer_connection
->session_name
->str
,
517 viewer_connection
->proto
->str
);
519 host
= gethostbyname(viewer_connection
->relay_hostname
->str
);
521 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
522 self_comp_class
, "Cannot lookup hostname: hostname=\"%s\"",
523 viewer_connection
->relay_hostname
->str
);
524 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
528 if ((viewer_connection
->control_sock
= socket(AF_INET
, SOCK_STREAM
, 0)) == BT_INVALID_SOCKET
) {
529 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
530 self_comp_class
, "Socket creation failed: %s", bt_socket_errormsg());
531 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
535 server_addr
.sin_family
= AF_INET
;
536 server_addr
.sin_port
= htons(viewer_connection
->port
);
537 server_addr
.sin_addr
= *((struct in_addr
*) host
->h_addr
);
538 memset(&(server_addr
.sin_zero
), 0, 8);
540 if (connect(viewer_connection
->control_sock
, (struct sockaddr
*) &server_addr
,
541 sizeof(struct sockaddr
)) == BT_SOCKET_ERROR
) {
542 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
543 self_comp_class
, "Connection failed: %s",
544 bt_socket_errormsg());
545 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
549 status
= lttng_live_handshake(viewer_connection
);
552 * Only print error and append cause in case of error. not in case of
555 if (status
== LTTNG_LIVE_VIEWER_STATUS_ERROR
) {
556 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
557 self_comp_class
, "Viewer handshake failed");
559 } else if (status
== LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
) {
566 if (viewer_connection
->control_sock
!= BT_INVALID_SOCKET
) {
567 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
568 BT_COMP_OR_COMP_CLASS_LOGW(self_comp
, self_comp_class
,
569 "Error closing socket: %s.", bt_socket_errormsg());
572 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
578 void lttng_live_disconnect_viewer(
579 struct live_viewer_connection
*viewer_connection
)
581 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
582 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
584 if (viewer_connection
->control_sock
== BT_INVALID_SOCKET
) {
587 if (bt_socket_close(viewer_connection
->control_sock
) == BT_SOCKET_ERROR
) {
588 BT_COMP_OR_COMP_CLASS_LOGW(self_comp
, self_comp_class
,
589 "Error closing socket: %s", bt_socket_errormsg());
590 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
595 int list_update_session(bt_value
*results
,
596 const struct lttng_viewer_session
*session
,
597 bool *_found
, struct live_viewer_connection
*viewer_connection
)
599 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
600 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
603 bt_value
*map
= NULL
;
604 bt_value
*hostname
= NULL
;
605 bt_value
*session_name
= NULL
;
606 bt_value
*btval
= NULL
;
609 len
= bt_value_array_get_length(results
);
610 for (i
= 0; i
< len
; i
++) {
611 const char *hostname_str
= NULL
;
612 const char *session_name_str
= NULL
;
614 map
= bt_value_array_borrow_element_by_index(results
, i
);
615 hostname
= bt_value_map_borrow_entry_value(map
, "target-hostname");
617 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
619 "Error borrowing \"target-hostname\" entry.");
623 session_name
= bt_value_map_borrow_entry_value(map
, "session-name");
625 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
627 "Error borrowing \"session-name\" entry.");
631 hostname_str
= bt_value_string_get(hostname
);
632 session_name_str
= bt_value_string_get(session_name
);
634 if (strcmp(session
->hostname
, hostname_str
) == 0
635 && strcmp(session
->session_name
, session_name_str
) == 0) {
637 uint32_t streams
= be32toh(session
->streams
);
638 uint32_t clients
= be32toh(session
->clients
);
642 btval
= bt_value_map_borrow_entry_value(map
, "stream-count");
644 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(
645 self_comp
, self_comp_class
,
646 "Error borrowing \"stream-count\" entry.");
650 val
= bt_value_integer_unsigned_get(btval
);
653 bt_value_integer_unsigned_set(btval
, val
);
655 btval
= bt_value_map_borrow_entry_value(map
, "client-count");
657 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(
658 self_comp
, self_comp_class
,
659 "Error borrowing \"client-count\" entry.");
663 val
= bt_value_integer_unsigned_get(btval
);
665 val
= bt_max_t(int64_t, clients
, val
);
666 bt_value_integer_unsigned_set(btval
, val
);
679 int list_append_session(bt_value
*results
,
681 const struct lttng_viewer_session
*session
,
682 struct live_viewer_connection
*viewer_connection
)
685 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
686 bt_value_map_insert_entry_status insert_status
;
687 bt_value_array_append_element_status append_status
;
688 bt_value
*map
= NULL
;
693 * If the session already exists, add the stream count to it,
694 * and do max of client counts.
696 ret
= list_update_session(results
, session
, &found
, viewer_connection
);
701 map
= bt_value_map_create();
703 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
704 "Error creating map value.");
709 if (base_url
->len
< 1) {
710 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
711 "Error: base_url length smaller than 1.");
719 url
= g_string_new(base_url
->str
);
720 g_string_append(url
, "/host/");
721 g_string_append(url
, session
->hostname
);
722 g_string_append_c(url
, '/');
723 g_string_append(url
, session
->session_name
);
725 insert_status
= bt_value_map_insert_string_entry(map
, "url", url
->str
);
726 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
727 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
728 "Error inserting \"url\" entry.");
734 * key = "target-hostname",
737 insert_status
= bt_value_map_insert_string_entry(map
, "target-hostname",
739 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
740 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
741 "Error inserting \"target-hostname\" entry.");
747 * key = "session-name",
750 insert_status
= bt_value_map_insert_string_entry(map
, "session-name",
751 session
->session_name
);
752 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
753 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
754 "Error inserting \"session-name\" entry.");
764 uint32_t live_timer
= be32toh(session
->live_timer
);
766 insert_status
= bt_value_map_insert_unsigned_integer_entry(
767 map
, "timer-us", live_timer
);
768 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
769 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
770 "Error inserting \"timer-us\" entry.");
777 * key = "stream-count",
781 uint32_t streams
= be32toh(session
->streams
);
783 insert_status
= bt_value_map_insert_unsigned_integer_entry(map
,
784 "stream-count", streams
);
785 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
786 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
787 "Error inserting \"stream-count\" entry.");
794 * key = "client-count",
798 uint32_t clients
= be32toh(session
->clients
);
800 insert_status
= bt_value_map_insert_unsigned_integer_entry(map
,
801 "client-count", clients
);
802 if (insert_status
!= BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK
) {
803 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
804 "Error inserting \"client-count\" entry.");
810 append_status
= bt_value_array_append_element(results
, map
);
811 if (append_status
!= BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK
) {
812 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
813 "Error appending map to results.");
819 g_string_free(url
, true);
821 BT_VALUE_PUT_REF_AND_RESET(map
);
826 * Data structure returned:
837 * key = "target-hostname",
841 * key = "session-name",
849 * key = "stream-count",
853 * key = "client-count",
862 bt_component_class_query_method_status
live_viewer_connection_list_sessions(
863 struct live_viewer_connection
*viewer_connection
,
864 const bt_value
**user_result
)
866 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
867 bt_component_class_query_method_status status
=
868 BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK
;
869 bt_value
*result
= NULL
;
870 enum lttng_live_viewer_status viewer_status
;
871 struct lttng_viewer_cmd cmd
;
872 struct lttng_viewer_list_sessions list
;
873 uint32_t i
, sessions_count
;
875 result
= bt_value_array_create();
877 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
878 "Error creating array");
879 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR
;
883 BT_LOGD("Requesting list of sessions: cmd=%s",
884 lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS
));
886 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
887 cmd
.data_size
= htobe64((uint64_t) 0);
888 cmd
.cmd_version
= htobe32(0);
890 viewer_status
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
891 if (viewer_status
== LTTNG_LIVE_VIEWER_STATUS_ERROR
) {
892 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
893 "Error sending list sessions command");
894 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
896 } else if (viewer_status
== LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
) {
897 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN
;
901 viewer_status
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
902 if (viewer_status
== LTTNG_LIVE_VIEWER_STATUS_ERROR
) {
903 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
904 "Error receiving session list");
905 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
907 } else if (viewer_status
== LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
) {
908 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN
;
912 sessions_count
= be32toh(list
.sessions_count
);
913 for (i
= 0; i
< sessions_count
; i
++) {
914 struct lttng_viewer_session lsession
;
916 viewer_status
= lttng_live_recv(viewer_connection
, &lsession
,
918 if (viewer_status
== LTTNG_LIVE_VIEWER_STATUS_ERROR
) {
919 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
920 "Error receiving session:");
921 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
923 } else if (viewer_status
== LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
) {
924 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_AGAIN
;
928 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
929 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
930 if (list_append_session(result
, viewer_connection
->url
,
931 &lsession
, viewer_connection
)) {
932 BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class
,
933 "Error appending session");
934 status
= BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR
;
939 *user_result
= result
;
942 BT_VALUE_PUT_REF_AND_RESET(result
);
948 enum lttng_live_viewer_status
lttng_live_query_session_ids(
949 struct lttng_live_msg_iter
*lttng_live_msg_iter
)
951 struct lttng_viewer_cmd cmd
;
952 struct lttng_viewer_list_sessions list
;
953 struct lttng_viewer_session lsession
;
954 uint32_t i
, sessions_count
;
956 enum lttng_live_viewer_status status
;
957 struct live_viewer_connection
*viewer_connection
=
958 lttng_live_msg_iter
->viewer_connection
;
959 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
960 bt_self_component_class
*self_comp_class
=
961 viewer_connection
->self_comp_class
;
963 BT_COMP_LOGD("Asking the relay daemon for the list of sessions: cmd=%s",
964 lttng_viewer_command_string(LTTNG_VIEWER_LIST_SESSIONS
));
966 cmd
.cmd
= htobe32(LTTNG_VIEWER_LIST_SESSIONS
);
967 cmd
.data_size
= htobe64((uint64_t) 0);
968 cmd
.cmd_version
= htobe32(0);
970 status
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
971 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
972 viewer_handle_send_status(self_comp
, self_comp_class
,
973 status
, "list sessions command");
977 status
= lttng_live_recv(viewer_connection
, &list
, sizeof(list
));
978 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
979 viewer_handle_recv_status(self_comp
, self_comp_class
,
980 status
, "session list reply");
984 sessions_count
= be32toh(list
.sessions_count
);
985 for (i
= 0; i
< sessions_count
; i
++) {
986 status
= lttng_live_recv(viewer_connection
, &lsession
,
988 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
989 viewer_handle_recv_status(self_comp
, self_comp_class
,
990 status
, "session reply");
993 lsession
.hostname
[LTTNG_VIEWER_HOST_NAME_MAX
- 1] = '\0';
994 lsession
.session_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
995 session_id
= be64toh(lsession
.id
);
997 BT_COMP_LOGI("Adding session to internal list: "
998 "session-id=%" PRIu64
", hostname=\"%s\", session-name=\"%s\"",
999 session_id
, lsession
.hostname
, lsession
.session_name
);
1001 if ((strncmp(lsession
.session_name
,
1002 viewer_connection
->session_name
->str
,
1003 LTTNG_VIEWER_NAME_MAX
) == 0) && (strncmp(lsession
.hostname
,
1004 viewer_connection
->target_hostname
->str
,
1005 LTTNG_VIEWER_HOST_NAME_MAX
) == 0)) {
1007 if (lttng_live_add_session(lttng_live_msg_iter
, session_id
,
1009 lsession
.session_name
)) {
1010 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1011 "Failed to add live session");
1012 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1018 status
= LTTNG_LIVE_VIEWER_STATUS_OK
;
1025 enum lttng_live_viewer_status
lttng_live_create_viewer_session(
1026 struct lttng_live_msg_iter
*lttng_live_msg_iter
)
1028 struct lttng_viewer_cmd cmd
;
1029 struct lttng_viewer_create_session_response resp
;
1030 enum lttng_live_viewer_status status
;
1031 struct live_viewer_connection
*viewer_connection
=
1032 lttng_live_msg_iter
->viewer_connection
;
1033 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1034 bt_self_component_class
*self_comp_class
=
1035 viewer_connection
->self_comp_class
;
1037 BT_COMP_OR_COMP_CLASS_LOGD(self_comp
, self_comp_class
,
1038 "Creating a viewer session: cmd=%s",
1039 lttng_viewer_command_string(LTTNG_VIEWER_CREATE_SESSION
));
1041 cmd
.cmd
= htobe32(LTTNG_VIEWER_CREATE_SESSION
);
1042 cmd
.data_size
= htobe64((uint64_t) 0);
1043 cmd
.cmd_version
= htobe32(0);
1045 status
= lttng_live_send(viewer_connection
, &cmd
, sizeof(cmd
));
1046 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1047 viewer_handle_send_status(self_comp
, self_comp_class
,
1048 status
, "create session command");
1052 status
= lttng_live_recv(viewer_connection
, &resp
, sizeof(resp
));
1053 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1054 viewer_handle_recv_status(self_comp
, self_comp_class
,
1055 status
, "create session reply");
1059 if (be32toh(resp
.status
) != LTTNG_VIEWER_CREATE_SESSION_OK
) {
1060 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1061 "Error creating viewer session");
1062 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1066 status
= lttng_live_query_session_ids(lttng_live_msg_iter
);
1067 if (status
== LTTNG_LIVE_VIEWER_STATUS_ERROR
) {
1068 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1069 "Failed to query live viewer session ids");
1071 } else if (status
== LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
) {
1080 enum lttng_live_viewer_status
receive_streams(struct lttng_live_session
*session
,
1081 uint32_t stream_count
,
1082 bt_self_message_iterator
*self_msg_iter
)
1085 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1086 session
->lttng_live_msg_iter
;
1087 enum lttng_live_viewer_status status
;
1088 struct live_viewer_connection
*viewer_connection
=
1089 lttng_live_msg_iter
->viewer_connection
;
1090 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1092 BT_COMP_LOGI("Getting %" PRIu32
" new streams", stream_count
);
1093 for (i
= 0; i
< stream_count
; i
++) {
1094 struct lttng_viewer_stream stream
;
1095 struct lttng_live_stream_iterator
*live_stream
;
1097 uint64_t ctf_trace_id
;
1099 status
= lttng_live_recv(viewer_connection
, &stream
,
1101 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1102 viewer_handle_recv_status(self_comp
, NULL
,
1103 status
, "stream reply");
1106 stream
.path_name
[LTTNG_VIEWER_PATH_MAX
- 1] = '\0';
1107 stream
.channel_name
[LTTNG_VIEWER_NAME_MAX
- 1] = '\0';
1108 stream_id
= be64toh(stream
.id
);
1109 ctf_trace_id
= be64toh(stream
.ctf_trace_id
);
1111 if (stream
.metadata_flag
) {
1112 BT_COMP_LOGI(" metadata stream %" PRIu64
" : %s/%s",
1113 stream_id
, stream
.path_name
, stream
.channel_name
);
1114 if (lttng_live_metadata_create_stream(session
,
1115 ctf_trace_id
, stream_id
,
1116 stream
.path_name
)) {
1117 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1118 "Error creating metadata stream");
1119 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1122 session
->lazy_stream_msg_init
= true;
1124 BT_COMP_LOGI(" stream %" PRIu64
" : %s/%s",
1125 stream_id
, stream
.path_name
, stream
.channel_name
);
1126 live_stream
= lttng_live_stream_iterator_create(session
,
1127 ctf_trace_id
, stream_id
, self_msg_iter
);
1129 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1130 "Error creating stream");
1131 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1136 status
= LTTNG_LIVE_VIEWER_STATUS_OK
;
1143 enum lttng_live_viewer_status
lttng_live_session_attach(
1144 struct lttng_live_session
*session
,
1145 bt_self_message_iterator
*self_msg_iter
)
1147 struct lttng_viewer_cmd cmd
;
1148 enum lttng_live_viewer_status status
;
1149 struct lttng_viewer_attach_session_request rq
;
1150 struct lttng_viewer_attach_session_response rp
;
1151 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1152 session
->lttng_live_msg_iter
;
1153 struct live_viewer_connection
*viewer_connection
=
1154 lttng_live_msg_iter
->viewer_connection
;
1155 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1156 uint64_t session_id
= session
->id
;
1157 uint32_t streams_count
;
1158 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1159 char cmd_buf
[cmd_buf_len
];
1161 BT_COMP_LOGD("Attaching to session: cmd=%s, session-id=%" PRIu64
1163 lttng_viewer_command_string(LTTNG_VIEWER_ATTACH_SESSION
),
1165 lttng_viewer_seek_string(LTTNG_VIEWER_SEEK_LAST
));
1167 cmd
.cmd
= htobe32(LTTNG_VIEWER_ATTACH_SESSION
);
1168 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1169 cmd
.cmd_version
= htobe32(0);
1171 memset(&rq
, 0, sizeof(rq
));
1172 rq
.session_id
= htobe64(session_id
);
1173 // TODO: add cmd line parameter to select seek beginning
1174 // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
1175 rq
.seek
= htobe32(LTTNG_VIEWER_SEEK_LAST
);
1178 * Merge the cmd and connection request to prevent a write-write
1179 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1180 * second write to be performed quickly in presence of Nagle's algorithm.
1182 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1183 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1184 status
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1185 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1186 viewer_handle_send_status(self_comp
, NULL
,
1187 status
, "attach session command");
1191 status
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1192 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1193 viewer_handle_recv_status(self_comp
, NULL
,
1194 status
, "attach session reply");
1198 streams_count
= be32toh(rp
.streams_count
);
1199 switch(be32toh(rp
.status
)) {
1200 case LTTNG_VIEWER_ATTACH_OK
:
1202 case LTTNG_VIEWER_ATTACH_UNK
:
1203 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1204 "Session id %" PRIu64
" is unknown", session_id
);
1205 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1207 case LTTNG_VIEWER_ATTACH_ALREADY
:
1208 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1209 "There is already a viewer attached to this session");
1210 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1212 case LTTNG_VIEWER_ATTACH_NOT_LIVE
:
1213 BT_COMP_LOGE_APPEND_CAUSE(self_comp
, "Not a live session");
1214 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1216 case LTTNG_VIEWER_ATTACH_SEEK_ERR
:
1217 BT_COMP_LOGE_APPEND_CAUSE(self_comp
, "Wrong seek parameter");
1218 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1221 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1222 "Unknown attach return code %u", be32toh(rp
.status
));
1223 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1227 /* We receive the initial list of streams. */
1228 status
= receive_streams(session
, streams_count
, self_msg_iter
);
1230 case LTTNG_LIVE_VIEWER_STATUS_OK
:
1232 case LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
:
1234 case LTTNG_LIVE_VIEWER_STATUS_ERROR
:
1235 BT_COMP_LOGE_APPEND_CAUSE(self_comp
, "Error receiving streams");
1241 session
->attached
= true;
1242 session
->new_streams_needed
= false;
1249 enum lttng_live_viewer_status
lttng_live_session_detach(
1250 struct lttng_live_session
*session
)
1252 struct lttng_viewer_cmd cmd
;
1253 enum lttng_live_viewer_status status
;
1254 struct lttng_viewer_detach_session_request rq
;
1255 struct lttng_viewer_detach_session_response rp
;
1256 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1257 session
->lttng_live_msg_iter
;
1258 bt_self_component
*self_comp
= session
->self_comp
;
1259 struct live_viewer_connection
*viewer_connection
=
1260 lttng_live_msg_iter
->viewer_connection
;
1261 uint64_t session_id
= session
->id
;
1262 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1263 char cmd_buf
[cmd_buf_len
];
1266 * The session might already be detached and the viewer socket might
1267 * already been closed. This happens when calling this function when
1268 * tearing down the graph after an error.
1270 if (!session
->attached
|| viewer_connection
->control_sock
== BT_INVALID_SOCKET
) {
1271 return LTTNG_LIVE_VIEWER_STATUS_OK
;
1274 BT_COMP_LOGD("Detaching from session: cmd=%s, session-id=%" PRIu64
,
1275 lttng_viewer_command_string(LTTNG_VIEWER_DETACH_SESSION
),
1278 cmd
.cmd
= htobe32(LTTNG_VIEWER_DETACH_SESSION
);
1279 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1280 cmd
.cmd_version
= htobe32(0);
1282 memset(&rq
, 0, sizeof(rq
));
1283 rq
.session_id
= htobe64(session_id
);
1286 * Merge the cmd and connection request to prevent a write-write
1287 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1288 * second write to be performed quickly in presence of Nagle's algorithm.
1290 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1291 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1292 status
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1293 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1294 viewer_handle_send_status(self_comp
, NULL
,
1295 status
, "detach session command");
1299 status
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1300 if (status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1301 viewer_handle_recv_status(self_comp
, NULL
,
1302 status
, "detach session reply");
1306 switch(be32toh(rp
.status
)) {
1307 case LTTNG_VIEWER_DETACH_SESSION_OK
:
1309 case LTTNG_VIEWER_DETACH_SESSION_UNK
:
1310 BT_COMP_LOGW("Session id %" PRIu64
" is unknown", session_id
);
1311 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1313 case LTTNG_VIEWER_DETACH_SESSION_ERR
:
1314 BT_COMP_LOGW("Error detaching session id %" PRIu64
"", session_id
);
1315 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1318 BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp
.status
));
1319 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1323 session
->attached
= false;
1325 status
= LTTNG_LIVE_VIEWER_STATUS_OK
;
1332 enum lttng_live_get_one_metadata_status
lttng_live_get_one_metadata_packet(
1333 struct lttng_live_trace
*trace
, FILE *fp
, size_t *reply_len
)
1336 enum lttng_live_get_one_metadata_status status
;
1337 enum lttng_live_viewer_status viewer_status
;
1338 struct lttng_viewer_cmd cmd
;
1339 struct lttng_viewer_get_metadata rq
;
1340 struct lttng_viewer_metadata_packet rp
;
1343 struct lttng_live_session
*session
= trace
->session
;
1344 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1345 session
->lttng_live_msg_iter
;
1346 struct lttng_live_metadata
*metadata
= trace
->metadata
;
1347 struct live_viewer_connection
*viewer_connection
=
1348 lttng_live_msg_iter
->viewer_connection
;
1349 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1350 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1351 char cmd_buf
[cmd_buf_len
];
1353 BT_COMP_LOGD("Requesting new metadata for trace:"
1354 "cmd=%s, trace-id=%" PRIu64
", metadata-stream-id=%" PRIu64
,
1355 lttng_viewer_command_string(LTTNG_VIEWER_GET_METADATA
),
1356 trace
->id
, metadata
->stream_id
);
1358 rq
.stream_id
= htobe64(metadata
->stream_id
);
1359 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_METADATA
);
1360 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1361 cmd
.cmd_version
= htobe32(0);
1364 * Merge the cmd and connection request to prevent a write-write
1365 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1366 * second write to be performed quickly in presence of Nagle's algorithm.
1368 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1369 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1370 viewer_status
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1371 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1372 viewer_handle_send_status(self_comp
, NULL
,
1373 viewer_status
, "get metadata command");
1374 status
= (enum lttng_live_get_one_metadata_status
) viewer_status
;
1378 viewer_status
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1379 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1380 viewer_handle_recv_status(self_comp
, NULL
,
1381 viewer_status
, "get metadata reply");
1382 status
= (enum lttng_live_get_one_metadata_status
) viewer_status
;
1386 switch (be32toh(rp
.status
)) {
1387 case LTTNG_VIEWER_METADATA_OK
:
1388 BT_COMP_LOGD("Received get_metadata response: ok");
1390 case LTTNG_VIEWER_NO_NEW_METADATA
:
1391 BT_COMP_LOGD("Received get_metadata response: no new");
1392 status
= LTTNG_LIVE_GET_ONE_METADATA_STATUS_END
;
1394 case LTTNG_VIEWER_METADATA_ERR
:
1396 * The Relayd cannot find this stream id. Maybe its
1397 * gone already. This can happen in short lived UST app
1398 * in a per-pid session.
1400 BT_COMP_LOGD("Received get_metadata response: error");
1401 status
= LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED
;
1404 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1405 "Received get_metadata response: unknown");
1406 status
= LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR
;
1410 len
= be64toh(rp
.len
);
1411 BT_COMP_LOGD("Writing %" PRIu64
" bytes to metadata", len
);
1413 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1414 "Erroneous response length");
1415 status
= LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR
;
1419 data
= g_new0(gchar
, len
);
1421 BT_COMP_LOGE_APPEND_CAUSE_ERRNO(self_comp
,
1422 "Failed to allocate data buffer", ".");
1423 status
= LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR
;
1427 viewer_status
= lttng_live_recv(viewer_connection
, data
, len
);
1428 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1429 viewer_handle_recv_status(self_comp
, NULL
,
1430 viewer_status
, "get metadata packet");
1431 status
= (enum lttng_live_get_one_metadata_status
) viewer_status
;
1436 * Write the metadata to the file handle.
1438 writelen
= fwrite(data
, sizeof(uint8_t), len
, fp
);
1439 if (writelen
!= len
) {
1440 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1441 "Writing in the metadata file stream");
1442 status
= LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR
;
1447 status
= LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK
;
1455 * Assign the fields from a lttng_viewer_index to a packet_index.
1458 void lttng_index_to_packet_index(struct lttng_viewer_index
*lindex
,
1459 struct packet_index
*pindex
)
1464 pindex
->offset
= be64toh(lindex
->offset
);
1465 pindex
->packet_size
= be64toh(lindex
->packet_size
);
1466 pindex
->content_size
= be64toh(lindex
->content_size
);
1467 pindex
->ts_cycles
.timestamp_begin
= be64toh(lindex
->timestamp_begin
);
1468 pindex
->ts_cycles
.timestamp_end
= be64toh(lindex
->timestamp_end
);
1469 pindex
->events_discarded
= be64toh(lindex
->events_discarded
);
1473 void lttng_live_need_new_streams(struct lttng_live_msg_iter
*lttng_live_msg_iter
)
1475 uint64_t session_idx
;
1476 struct live_viewer_connection
*viewer_connection
=
1477 lttng_live_msg_iter
->viewer_connection
;
1479 for (session_idx
= 0; session_idx
< lttng_live_msg_iter
->sessions
->len
;
1481 struct lttng_live_session
*session
=
1482 (lttng_live_session
*) g_ptr_array_index(lttng_live_msg_iter
->sessions
, session_idx
);
1483 BT_COMP_LOGD("Marking session as needing new streams: "
1484 "session-id=%" PRIu64
, session
->id
);
1485 session
->new_streams_needed
= true;
1490 enum lttng_live_iterator_status
lttng_live_get_next_index(
1491 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1492 struct lttng_live_stream_iterator
*stream
,
1493 struct packet_index
*index
)
1495 struct lttng_viewer_cmd cmd
;
1496 struct lttng_viewer_get_next_index rq
;
1497 enum lttng_live_viewer_status viewer_status
;
1498 struct lttng_viewer_index rp
;
1499 enum lttng_live_iterator_status status
;
1500 struct live_viewer_connection
*viewer_connection
=
1501 lttng_live_msg_iter
->viewer_connection
;
1502 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1503 struct lttng_live_trace
*trace
= stream
->trace
;
1504 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1505 char cmd_buf
[cmd_buf_len
];
1506 uint32_t flags
, rp_status
;
1508 BT_COMP_LOGD("Requesting next index for stream: cmd=%s, "
1509 "viewer-stream-id=%" PRIu64
,
1510 lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX
),
1511 stream
->viewer_stream_id
);
1512 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEXT_INDEX
);
1513 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1514 cmd
.cmd_version
= htobe32(0);
1516 memset(&rq
, 0, sizeof(rq
));
1517 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1520 * Merge the cmd and connection request to prevent a write-write
1521 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1522 * second write to be performed quickly in presence of Nagle's algorithm.
1524 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1525 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1527 viewer_status
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1528 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1529 viewer_handle_send_status(self_comp
, NULL
,
1530 viewer_status
, "get next index command");
1534 viewer_status
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1535 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1536 viewer_handle_recv_status(self_comp
, NULL
,
1537 viewer_status
, "get next index reply");
1541 flags
= be32toh(rp
.flags
);
1542 rp_status
= be32toh(rp
.status
);
1544 BT_COMP_LOGD("Received response from relay daemon: cmd=%s, response=%s",
1545 lttng_viewer_command_string(LTTNG_VIEWER_GET_NEXT_INDEX
),
1546 lttng_viewer_next_index_return_code_string(rp_status
));
1547 switch (rp_status
) {
1548 case LTTNG_VIEWER_INDEX_INACTIVE
:
1550 uint64_t ctf_stream_class_id
;
1552 memset(index
, 0, sizeof(struct packet_index
));
1553 index
->ts_cycles
.timestamp_end
= be64toh(rp
.timestamp_end
);
1554 stream
->current_inactivity_ts
= index
->ts_cycles
.timestamp_end
;
1555 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1556 if (stream
->ctf_stream_class_id
.is_set
) {
1557 BT_ASSERT(stream
->ctf_stream_class_id
.value
==
1558 ctf_stream_class_id
);
1560 stream
->ctf_stream_class_id
.value
= ctf_stream_class_id
;
1561 stream
->ctf_stream_class_id
.is_set
= true;
1563 lttng_live_stream_iterator_set_state(stream
, LTTNG_LIVE_STREAM_QUIESCENT
);
1564 status
= LTTNG_LIVE_ITERATOR_STATUS_OK
;
1567 case LTTNG_VIEWER_INDEX_OK
:
1569 uint64_t ctf_stream_class_id
;
1571 lttng_index_to_packet_index(&rp
, index
);
1572 ctf_stream_class_id
= be64toh(rp
.stream_id
);
1573 if (stream
->ctf_stream_class_id
.is_set
) {
1574 BT_ASSERT(stream
->ctf_stream_class_id
.value
==
1575 ctf_stream_class_id
);
1577 stream
->ctf_stream_class_id
.value
= ctf_stream_class_id
;
1578 stream
->ctf_stream_class_id
.is_set
= true;
1581 lttng_live_stream_iterator_set_state(stream
, LTTNG_LIVE_STREAM_ACTIVE_DATA
);
1583 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1584 BT_COMP_LOGD("Marking trace as needing new metadata: "
1585 "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64
,
1586 lttng_viewer_next_index_return_code_string(rp_status
),
1588 trace
->metadata_stream_state
= LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED
;
1590 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1591 BT_COMP_LOGD("Marking all sessions as possibly needing new streams: "
1592 "response=%s, response-flag=NEW_STREAM",
1593 lttng_viewer_next_index_return_code_string(rp_status
));
1594 lttng_live_need_new_streams(lttng_live_msg_iter
);
1596 status
= LTTNG_LIVE_ITERATOR_STATUS_OK
;
1599 case LTTNG_VIEWER_INDEX_RETRY
:
1600 memset(index
, 0, sizeof(struct packet_index
));
1601 lttng_live_stream_iterator_set_state(stream
, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
);
1602 status
= LTTNG_LIVE_ITERATOR_STATUS_AGAIN
;
1604 case LTTNG_VIEWER_INDEX_HUP
:
1605 memset(index
, 0, sizeof(struct packet_index
));
1606 index
->offset
= EOF
;
1607 lttng_live_stream_iterator_set_state(stream
, LTTNG_LIVE_STREAM_EOF
);
1608 stream
->has_stream_hung_up
= true;
1609 status
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1611 case LTTNG_VIEWER_INDEX_ERR
:
1612 memset(index
, 0, sizeof(struct packet_index
));
1613 lttng_live_stream_iterator_set_state(stream
, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
);
1614 status
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1617 BT_COMP_LOGD("Received get_next_index response: unknown value");
1618 memset(index
, 0, sizeof(struct packet_index
));
1619 lttng_live_stream_iterator_set_state(stream
, LTTNG_LIVE_STREAM_ACTIVE_NO_DATA
);
1620 status
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1626 status
= viewer_status_to_live_iterator_status(viewer_status
);
1632 enum ctf_msg_iter_medium_status
lttng_live_get_stream_bytes(
1633 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1634 struct lttng_live_stream_iterator
*stream
, uint8_t *buf
,
1635 uint64_t offset
, uint64_t req_len
, uint64_t *recv_len
)
1637 enum ctf_msg_iter_medium_status status
;
1638 enum lttng_live_viewer_status viewer_status
;
1639 struct lttng_viewer_trace_packet rp
;
1640 struct lttng_viewer_cmd cmd
;
1641 struct lttng_viewer_get_packet rq
;
1642 struct live_viewer_connection
*viewer_connection
=
1643 lttng_live_msg_iter
->viewer_connection
;
1644 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1645 struct lttng_live_trace
*trace
= stream
->trace
;
1646 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1647 char cmd_buf
[cmd_buf_len
];
1648 uint32_t flags
, rp_status
;
1650 BT_COMP_LOGD("Requesting data from stream: cmd=%s, "
1651 "offset=%" PRIu64
", request-len=%" PRIu64
,
1652 lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET
),
1655 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_PACKET
);
1656 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1657 cmd
.cmd_version
= htobe32(0);
1659 memset(&rq
, 0, sizeof(rq
));
1660 rq
.stream_id
= htobe64(stream
->viewer_stream_id
);
1661 rq
.offset
= htobe64(offset
);
1662 rq
.len
= htobe32(req_len
);
1665 * Merge the cmd and connection request to prevent a write-write
1666 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1667 * second write to be performed quickly in presence of Nagle's algorithm.
1669 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1670 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1672 viewer_status
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1673 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1674 viewer_handle_send_status(self_comp
, NULL
,
1675 viewer_status
, "get data packet command");
1676 goto error_convert_status
;
1679 viewer_status
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1680 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1681 viewer_handle_recv_status(self_comp
, NULL
,
1682 viewer_status
, "get data packet reply");
1683 goto error_convert_status
;
1686 flags
= be32toh(rp
.flags
);
1687 rp_status
= be32toh(rp
.status
);
1689 BT_COMP_LOGD("Received response from relay daemon: cmd=%s, response=%s",
1690 lttng_viewer_command_string(LTTNG_VIEWER_GET_PACKET
),
1691 lttng_viewer_get_packet_return_code_string(rp_status
));
1692 switch (rp_status
) {
1693 case LTTNG_VIEWER_GET_PACKET_OK
:
1694 req_len
= be32toh(rp
.len
);
1695 BT_COMP_LOGD("Got packet from relay daemon: response=%s, packet-len=%" PRIu64
"",
1696 lttng_viewer_get_packet_return_code_string(rp_status
),
1698 status
= CTF_MSG_ITER_MEDIUM_STATUS_OK
;
1700 case LTTNG_VIEWER_GET_PACKET_RETRY
:
1701 /* Unimplemented by relay daemon */
1702 status
= CTF_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1704 case LTTNG_VIEWER_GET_PACKET_ERR
:
1705 if (flags
& LTTNG_VIEWER_FLAG_NEW_METADATA
) {
1706 BT_COMP_LOGD("Marking trace as needing new metadata: "
1707 "response=%s, response-flag=NEW_METADATA, trace-id=%" PRIu64
,
1708 lttng_viewer_next_index_return_code_string(rp_status
),
1710 trace
->metadata_stream_state
= LTTNG_LIVE_METADATA_STREAM_STATE_NEEDED
;
1712 if (flags
& LTTNG_VIEWER_FLAG_NEW_STREAM
) {
1713 BT_COMP_LOGD("Marking all sessions as possibly needing new streams: "
1714 "response=%s, response-flag=NEW_STREAM",
1715 lttng_viewer_next_index_return_code_string(rp_status
));
1716 lttng_live_need_new_streams(lttng_live_msg_iter
);
1718 if (flags
& (LTTNG_VIEWER_FLAG_NEW_METADATA
1719 | LTTNG_VIEWER_FLAG_NEW_STREAM
)) {
1720 status
= CTF_MSG_ITER_MEDIUM_STATUS_AGAIN
;
1721 BT_COMP_LOGD("Reply with any one flags set means we should retry: response=%s",
1722 lttng_viewer_get_packet_return_code_string(rp_status
));
1725 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1726 "Received get_data_packet response: error");
1727 status
= CTF_MSG_ITER_MEDIUM_STATUS_ERROR
;
1729 case LTTNG_VIEWER_GET_PACKET_EOF
:
1730 status
= CTF_MSG_ITER_MEDIUM_STATUS_EOF
;
1733 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1734 "Received get_data_packet response: unknown (%d)", rp_status
);
1735 status
= CTF_MSG_ITER_MEDIUM_STATUS_ERROR
;
1740 status
= CTF_MSG_ITER_MEDIUM_STATUS_ERROR
;
1744 viewer_status
= lttng_live_recv(viewer_connection
, buf
, req_len
);
1745 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1746 viewer_handle_recv_status(self_comp
, NULL
,
1747 viewer_status
, "get data packet");
1748 goto error_convert_status
;
1750 *recv_len
= req_len
;
1752 status
= CTF_MSG_ITER_MEDIUM_STATUS_OK
;
1755 error_convert_status
:
1756 status
= viewer_status_to_ctf_msg_iter_medium_status(viewer_status
);
1762 * Request new streams for a session.
1765 enum lttng_live_iterator_status
lttng_live_session_get_new_streams(
1766 struct lttng_live_session
*session
,
1767 bt_self_message_iterator
*self_msg_iter
)
1769 enum lttng_live_iterator_status status
=
1770 LTTNG_LIVE_ITERATOR_STATUS_OK
;
1771 struct lttng_viewer_cmd cmd
;
1772 struct lttng_viewer_new_streams_request rq
;
1773 struct lttng_viewer_new_streams_response rp
;
1774 struct lttng_live_msg_iter
*lttng_live_msg_iter
=
1775 session
->lttng_live_msg_iter
;
1776 enum lttng_live_viewer_status viewer_status
;
1777 struct live_viewer_connection
*viewer_connection
=
1778 lttng_live_msg_iter
->viewer_connection
;
1779 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1780 uint32_t streams_count
;
1781 const size_t cmd_buf_len
= sizeof(cmd
) + sizeof(rq
);
1782 char cmd_buf
[cmd_buf_len
];
1784 if (!session
->new_streams_needed
) {
1785 status
= LTTNG_LIVE_ITERATOR_STATUS_OK
;
1789 BT_COMP_LOGD("Requesting new streams for session: cmd=%s, "
1790 "session-id=%" PRIu64
,
1791 lttng_viewer_command_string(LTTNG_VIEWER_GET_NEW_STREAMS
),
1794 cmd
.cmd
= htobe32(LTTNG_VIEWER_GET_NEW_STREAMS
);
1795 cmd
.data_size
= htobe64((uint64_t) sizeof(rq
));
1796 cmd
.cmd_version
= htobe32(0);
1798 memset(&rq
, 0, sizeof(rq
));
1799 rq
.session_id
= htobe64(session
->id
);
1802 * Merge the cmd and connection request to prevent a write-write
1803 * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the
1804 * second write to be performed quickly in presence of Nagle's algorithm.
1806 memcpy(cmd_buf
, &cmd
, sizeof(cmd
));
1807 memcpy(cmd_buf
+ sizeof(cmd
), &rq
, sizeof(rq
));
1809 viewer_status
= lttng_live_send(viewer_connection
, &cmd_buf
, cmd_buf_len
);
1810 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1811 viewer_handle_send_status(self_comp
, NULL
,
1812 viewer_status
, "get new streams command");
1813 status
= viewer_status_to_live_iterator_status(viewer_status
);
1817 viewer_status
= lttng_live_recv(viewer_connection
, &rp
, sizeof(rp
));
1818 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1819 viewer_handle_recv_status(self_comp
, NULL
,
1820 viewer_status
, "get new streams reply");
1821 status
= viewer_status_to_live_iterator_status(viewer_status
);
1825 streams_count
= be32toh(rp
.streams_count
);
1827 switch(be32toh(rp
.status
)) {
1828 case LTTNG_VIEWER_NEW_STREAMS_OK
:
1829 session
->new_streams_needed
= false;
1831 case LTTNG_VIEWER_NEW_STREAMS_NO_NEW
:
1832 session
->new_streams_needed
= false;
1834 case LTTNG_VIEWER_NEW_STREAMS_HUP
:
1835 session
->new_streams_needed
= false;
1836 session
->closed
= true;
1837 status
= LTTNG_LIVE_ITERATOR_STATUS_END
;
1839 case LTTNG_VIEWER_NEW_STREAMS_ERR
:
1840 BT_COMP_LOGD("Received get_new_streams response: error");
1841 status
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1844 BT_COMP_LOGE_APPEND_CAUSE(self_comp
,
1845 "Received get_new_streams response: Unknown:"
1846 "return code %u", be32toh(rp
.status
));
1847 status
= LTTNG_LIVE_ITERATOR_STATUS_ERROR
;
1851 viewer_status
= receive_streams(session
, streams_count
, self_msg_iter
);
1852 if (viewer_status
!= LTTNG_LIVE_VIEWER_STATUS_OK
) {
1853 viewer_handle_recv_status(self_comp
, NULL
,
1854 viewer_status
, "new streams");
1855 status
= viewer_status_to_live_iterator_status(viewer_status
);
1859 status
= LTTNG_LIVE_ITERATOR_STATUS_OK
;
1865 enum lttng_live_viewer_status
live_viewer_connection_create(
1866 bt_self_component
*self_comp
,
1867 bt_self_component_class
*self_comp_class
,
1868 bt_logging_level log_level
,
1869 const char *url
, bool in_query
,
1870 struct lttng_live_msg_iter
*lttng_live_msg_iter
,
1871 struct live_viewer_connection
**viewer
)
1873 struct live_viewer_connection
*viewer_connection
;
1874 enum lttng_live_viewer_status status
;
1876 viewer_connection
= g_new0(struct live_viewer_connection
, 1);
1878 if (bt_socket_init(log_level
) != 0) {
1879 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
1880 self_comp_class
, "Failed to init socket");
1881 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1885 viewer_connection
->log_level
= log_level
;
1887 viewer_connection
->self_comp
= self_comp
;
1888 viewer_connection
->self_comp_class
= self_comp_class
;
1890 viewer_connection
->control_sock
= BT_INVALID_SOCKET
;
1891 viewer_connection
->port
= -1;
1892 viewer_connection
->in_query
= in_query
;
1893 viewer_connection
->lttng_live_msg_iter
= lttng_live_msg_iter
;
1894 viewer_connection
->url
= g_string_new(url
);
1895 if (!viewer_connection
->url
) {
1896 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
1897 self_comp_class
, "Failed to allocate URL buffer");
1898 status
= LTTNG_LIVE_VIEWER_STATUS_ERROR
;
1902 BT_COMP_OR_COMP_CLASS_LOGD(self_comp
, self_comp_class
,
1903 "Establishing connection to url \"%s\"...", url
);
1904 status
= lttng_live_connect_viewer(viewer_connection
);
1906 * Only print error and append cause in case of error. not in case of
1909 if (status
== LTTNG_LIVE_VIEWER_STATUS_ERROR
) {
1910 BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp
,
1911 self_comp_class
, "Failed to establish connection: "
1914 } else if (status
== LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED
) {
1917 BT_COMP_OR_COMP_CLASS_LOGD(self_comp
, self_comp_class
,
1918 "Connection to url \"%s\" is established", url
);
1920 *viewer
= viewer_connection
;
1921 status
= LTTNG_LIVE_VIEWER_STATUS_OK
;
1925 if (viewer_connection
) {
1926 live_viewer_connection_destroy(viewer_connection
);
1933 void live_viewer_connection_destroy(
1934 struct live_viewer_connection
*viewer_connection
)
1936 bt_self_component
*self_comp
= viewer_connection
->self_comp
;
1937 bt_self_component_class
*self_comp_class
= viewer_connection
->self_comp_class
;
1939 if (!viewer_connection
) {
1943 BT_COMP_OR_COMP_CLASS_LOGD(self_comp
, self_comp_class
,
1944 "Closing connection to relay:"
1945 "relay-url=\"%s\"", viewer_connection
->url
->str
);
1947 lttng_live_disconnect_viewer(viewer_connection
);
1949 if (viewer_connection
->url
) {
1950 g_string_free(viewer_connection
->url
, true);
1953 if (viewer_connection
->relay_hostname
) {
1954 g_string_free(viewer_connection
->relay_hostname
, true);
1957 if (viewer_connection
->target_hostname
) {
1958 g_string_free(viewer_connection
->target_hostname
, true);
1961 if (viewer_connection
->session_name
) {
1962 g_string_free(viewer_connection
->session_name
, true);
1965 if (viewer_connection
->proto
) {
1966 g_string_free(viewer_connection
->proto
, true);
1969 g_free(viewer_connection
);