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-abi.h"
38 #include "network-live.h"
39 #include "liblttng-live.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.
58 int parse_url(const char *path
, struct lttng_live_ctx
*ctx
)
60 char remain
[3][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",
87 ctx
->relay_hostname
, remain
[0]);
89 /* Optional port number */
90 switch (remain
[0][0]) {
92 ret
= sscanf(remain
[0], ":%d%s", &ctx
->port
, remain
[1]);
93 /* Optional session ID with port number */
95 ret
= sscanf(remain
[1], "/%s", remain
[2]);
96 /* Accept 0 or 1 (optional) */
103 /* Optional session ID */
104 ret
= sscanf(remain
[0], "/%s", remain
[2]);
105 /* Accept 0 or 1 (optional) */
111 fprintf(stderr
, "[error] wrong delimitor : %c\n",
119 ctx
->port
= LTTNG_DEFAULT_NETWORK_VIEWER_PORT
;
121 if (strlen(remain
[2]) == 0) {
122 printf_verbose("Connecting to hostname : %s, port : %d, "
124 ctx
->relay_hostname
, ctx
->port
, proto
);
128 ret
= sscanf(remain
[2], "host/%[a-zA-Z.0-9%-]/%s",
129 ctx
->traced_hostname
, ctx
->session_name
);
131 fprintf(stderr
, "[error] Format : "
132 "net://<hostname>/host/<traced_hostname>/<session_name>\n");
136 printf_verbose("Connecting to hostname : %s, port : %d, "
137 "traced hostname : %s, session name : %s, "
139 ctx
->relay_hostname
, ctx
->port
, ctx
->traced_hostname
,
140 ctx
->session_name
, proto
);
147 static int lttng_live_open_trace_read(const char *path
)
150 struct lttng_live_ctx
*ctx
;
152 ctx
= g_new0(struct lttng_live_ctx
, 1);
153 ctx
->session
= g_new0(struct lttng_live_session
, 1);
155 /* We need a pointer to the context from the packet_seek function. */
156 ctx
->session
->ctx
= ctx
;
158 /* HT to store the CTF traces. */
159 ctx
->session
->ctf_traces
= g_hash_table_new(g_direct_hash
,
162 ctx
->session_ids
= g_array_new(FALSE
, TRUE
, sizeof(uint64_t));
164 ret
= parse_url(path
, ctx
);
169 ret
= lttng_live_connect_viewer(ctx
);
171 fprintf(stderr
, "[error] Connection failed\n");
174 printf_verbose("LTTng-live connected to relayd\n");
176 ret
= lttng_live_establish_connection(ctx
);
180 printf_verbose("Listing sessions\n");
181 ret
= lttng_live_list_sessions(ctx
, path
);
183 fprintf(stderr
, "[error] List error\n");
187 if (ctx
->session_ids
->len
> 0)
188 lttng_live_read(ctx
);
191 g_hash_table_destroy(ctx
->session
->ctf_traces
);
192 g_free(ctx
->session
);
193 g_free(ctx
->session
->streams
);
199 struct bt_trace_descriptor
*lttng_live_open_trace(const char *path
, int flags
,
200 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
201 int whence
), FILE *metadata_fp
)
203 struct ctf_text_stream_pos
*pos
;
205 switch (flags
& O_ACCMODE
) {
210 fprintf(stderr
, "[error] lttng live plugin cannot be used as output plugin.\n");
213 fprintf(stderr
, "[error] Incorrect open flags.\n");
217 pos
= g_new0(struct ctf_text_stream_pos
, 1);
218 pos
->parent
.rw_table
= NULL
;
219 pos
->parent
.event_cb
= NULL
;
220 pos
->parent
.trace
= &pos
->trace_descriptor
;
221 lttng_live_open_trace_read(path
);
222 return &pos
->trace_descriptor
;
229 int lttng_live_close_trace(struct bt_trace_descriptor
*td
)
231 struct ctf_text_stream_pos
*pos
=
232 container_of(td
, struct ctf_text_stream_pos
,
239 struct bt_format lttng_live_format
= {
240 .open_trace
= lttng_live_open_trace
,
241 .close_trace
= lttng_live_close_trace
,
245 void __attribute__((constructor
)) lttng_live_init(void)
249 lttng_live_format
.name
= g_quark_from_static_string("lttng-live");
250 ret
= bt_register_format(<tng_live_format
);
255 void __attribute__((destructor
)) lttng_live_exit(void)
257 bt_unregister_format(<tng_live_format
);