2 * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
3 * 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 #include <sys/socket.h>
25 #include <sys/types.h>
26 #include <netinet/in.h>
37 #include "lttng-viewer.h"
38 #include "network-live.h"
39 #include "lttng-live-functions.h"
41 #include <babeltrace/babeltrace.h>
42 #include <babeltrace/ctf/events.h>
43 #include <babeltrace/ctf/callbacks.h>
44 #include <babeltrace/ctf/iterator.h>
46 /* for packet_index */
47 #include <babeltrace/ctf/types.h>
49 #include <babeltrace/ctf/metadata.h>
50 #include <babeltrace/ctf-text/types.h>
51 #include <babeltrace/ctf/events-internal.h>
52 #include <lib/babeltrace/ctf/ctf-index.h>
55 * hostname parameter needs to hold NAME_MAX chars.
57 static int parse_url(const char *path
, char *hostname
, int *port
,
60 char remain
[2][NAME_MAX
];
61 int ret
= -1, proto
, proto_offset
= 0;
62 size_t path_len
= strlen(path
);
65 * Since sscanf API does not allow easily checking string length
66 * against a size defined by a macro. Test it beforehand on the
67 * input. We know the output is always <= than the input length.
69 if (path_len
> NAME_MAX
) {
72 ret
= sscanf(path
, "net%d://", &proto
);
76 proto_offset
= strlen("net://");
78 /* net4:// or net6:// */
79 proto_offset
= strlen("netX://");
81 if (proto_offset
> path_len
) {
84 /* TODO : parse for IPv6 as well */
85 /* Parse the hostname or IP */
86 ret
= sscanf(&path
[proto_offset
], "%[a-zA-Z.0-9%-]%s",
89 /* Optional port number */
90 switch (remain
[0][0]) {
92 ret
= sscanf(remain
[0], ":%d%s", port
, remain
[1]);
93 /* Optional session ID with port number */
95 ret
= sscanf(remain
[1], "/%" PRIu64
,
97 /* Accept 0 or 1 (optional) */
104 /* Optional session ID */
105 ret
= sscanf(remain
[0], "/%" PRIu64
, session_id
);
106 /* Accept 0 or 1 (optional) */
112 fprintf(stderr
, "[error] wrong delimitor : %c\n",
120 *port
= LTTNG_DEFAULT_NETWORK_VIEWER_PORT
;
122 if (*session_id
== -1ULL)
123 printf_verbose("Connecting to hostname : %s, port : %d, "
125 hostname
, *port
, proto
);
127 printf_verbose("Connecting to hostname : %s, port : %d, "
128 "session id : %" PRIu64
", proto : IPv%d\n",
129 hostname
, *port
, *session_id
, proto
);
136 static int lttng_live_open_trace_read(const char *path
)
138 char hostname
[NAME_MAX
];
140 uint64_t session_id
= -1ULL;
142 struct lttng_live_ctx ctx
;
144 ctx
.session
= g_new0(struct lttng_live_session
, 1);
146 /* We need a pointer to the context from the packet_seek function. */
147 ctx
.session
->ctx
= &ctx
;
149 /* HT to store the CTF traces. */
150 ctx
.session
->ctf_traces
= g_hash_table_new(g_direct_hash
,
153 ret
= parse_url(path
, hostname
, &port
, &session_id
);
158 ret
= lttng_live_connect_viewer(&ctx
, hostname
, port
);
160 fprintf(stderr
, "[error] Connection failed\n");
163 printf_verbose("LTTng-live connected to relayd\n");
165 ret
= lttng_live_establish_connection(&ctx
);
170 if (session_id
== -1ULL) {
171 printf_verbose("Listing sessions\n");
172 ret
= lttng_live_list_sessions(&ctx
, path
);
174 fprintf(stderr
, "[error] List error\n");
178 lttng_live_read(&ctx
, session_id
);
182 g_hash_table_destroy(ctx
.session
->ctf_traces
);
184 g_free(ctx
.session
->streams
);
189 struct bt_trace_descriptor
*lttng_live_open_trace(const char *path
, int flags
,
190 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
191 int whence
), FILE *metadata_fp
)
193 struct ctf_text_stream_pos
*pos
;
195 switch (flags
& O_ACCMODE
) {
200 fprintf(stderr
, "[error] lttng live plugin cannot be used as output plugin.\n");
203 fprintf(stderr
, "[error] Incorrect open flags.\n");
207 pos
= g_new0(struct ctf_text_stream_pos
, 1);
208 pos
->parent
.rw_table
= NULL
;
209 pos
->parent
.event_cb
= NULL
;
210 pos
->parent
.trace
= &pos
->trace_descriptor
;
211 lttng_live_open_trace_read(path
);
212 return &pos
->trace_descriptor
;
219 int lttng_live_close_trace(struct bt_trace_descriptor
*td
)
221 struct ctf_text_stream_pos
*pos
=
222 container_of(td
, struct ctf_text_stream_pos
,
229 struct bt_format lttng_live_format
= {
230 .open_trace
= lttng_live_open_trace
,
231 .close_trace
= lttng_live_close_trace
,
235 void __attribute__((constructor
)) lttng_live_init(void)
239 lttng_live_format
.name
= g_quark_from_static_string("lttng-live");
240 ret
= bt_register_format(<tng_live_format
);
245 void __attribute__((destructor
)) lttng_live_exit(void)
247 bt_unregister_format(<tng_live_format
);