Commit | Line | Data |
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7cdc2bab | 1 | /* |
14f28187 | 2 | * Copyright 2019 - Francis Deslauriers <francis.deslauriers@efficios.com> |
7cdc2bab MD |
3 | * Copyright 2016 - Philippe Proulx <pproulx@efficios.com> |
4 | * Copyright 2010-2011 - EfficiOS Inc. and Linux Foundation | |
5 | * | |
6 | * Some functions are based on older functions written by Mathieu Desnoyers. | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
24 | * SOFTWARE. | |
25 | */ | |
26 | ||
2ece7dd0 | 27 | #define BT_COMP_LOG_SELF_COMP self_comp |
c01594de | 28 | #define BT_LOG_OUTPUT_LEVEL log_level |
350ad6c1 | 29 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/META" |
d9c39b0a | 30 | #include "logging/comp-logging.h" |
020bc26f | 31 | |
7cdc2bab MD |
32 | #include <stdio.h> |
33 | #include <stdint.h> | |
34 | #include <stdlib.h> | |
35 | #include <stdbool.h> | |
36 | #include <glib.h> | |
578e048b | 37 | #include "compat/memstream.h" |
3fadfbc0 | 38 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 39 | |
7cdc2bab MD |
40 | #include "metadata.h" |
41 | #include "../common/metadata/decoder.h" | |
335a2da5 | 42 | #include "../common/metadata/ctf-meta-configure-ir-trace.h" |
7cdc2bab MD |
43 | |
44 | #define TSDL_MAGIC 0x75d11d57 | |
45 | ||
46 | struct packet_header { | |
47 | uint32_t magic; | |
48 | uint8_t uuid[16]; | |
49 | uint32_t checksum; | |
50 | uint32_t content_size; | |
51 | uint32_t packet_size; | |
52 | uint8_t compression_scheme; | |
53 | uint8_t encryption_scheme; | |
54 | uint8_t checksum_scheme; | |
55 | uint8_t major; | |
56 | uint8_t minor; | |
57 | } __attribute__((__packed__)); | |
58 | ||
14f28187 | 59 | |
7cdc2bab | 60 | static |
c01594de | 61 | bool stream_classes_all_have_default_clock_class(bt_trace_class *tc, |
2ece7dd0 PP |
62 | bt_logging_level log_level, |
63 | bt_self_component *self_comp) | |
7cdc2bab | 64 | { |
14f28187 FD |
65 | uint64_t i, sc_count; |
66 | const bt_clock_class *cc = NULL; | |
67 | const bt_stream_class *sc; | |
68 | bool ret = true; | |
7cdc2bab | 69 | |
14f28187 FD |
70 | sc_count = bt_trace_class_get_stream_class_count(tc); |
71 | for (i = 0; i < sc_count; i++) { | |
72 | sc = bt_trace_class_borrow_stream_class_by_index_const(tc, i); | |
7cdc2bab | 73 | |
14f28187 | 74 | BT_ASSERT(sc); |
7cdc2bab | 75 | |
14f28187 FD |
76 | cc = bt_stream_class_borrow_default_clock_class_const(sc); |
77 | if (!cc) { | |
78 | ret = false; | |
2ece7dd0 | 79 | BT_COMP_LOGE("Stream class doesn't have a default clock class: " |
14f28187 FD |
80 | "sc-id=%" PRIu64 ", sc-name=\"%s\"", |
81 | bt_stream_class_get_id(sc), | |
82 | bt_stream_class_get_name(sc)); | |
83 | goto end; | |
7cdc2bab MD |
84 | } |
85 | } | |
86 | ||
7cdc2bab | 87 | end: |
14f28187 FD |
88 | return ret; |
89 | } | |
90 | /* | |
91 | * Iterate over the stream classes and returns the first clock class | |
92 | * encountered. This is useful to create message iterator inactivity message as | |
93 | * we don't need a particular clock class. | |
94 | */ | |
95 | static | |
96 | const bt_clock_class *borrow_any_clock_class(bt_trace_class *tc) | |
97 | { | |
98 | uint64_t i, sc_count; | |
99 | const bt_clock_class *cc = NULL; | |
100 | const bt_stream_class *sc; | |
101 | ||
102 | sc_count = bt_trace_class_get_stream_class_count(tc); | |
103 | for (i = 0; i < sc_count; i++) { | |
104 | sc = bt_trace_class_borrow_stream_class_by_index_const(tc, i); | |
105 | BT_ASSERT(sc); | |
106 | ||
107 | cc = bt_stream_class_borrow_default_clock_class_const(sc); | |
108 | if (cc) { | |
109 | goto end; | |
110 | } | |
111 | } | |
112 | end: | |
113 | BT_ASSERT(cc); | |
114 | return cc; | |
7cdc2bab MD |
115 | } |
116 | ||
117 | BT_HIDDEN | |
14f28187 | 118 | enum lttng_live_iterator_status lttng_live_metadata_update( |
7cdc2bab MD |
119 | struct lttng_live_trace *trace) |
120 | { | |
121 | struct lttng_live_session *session = trace->session; | |
7cdc2bab MD |
122 | struct lttng_live_metadata *metadata = trace->metadata; |
123 | ssize_t ret = 0; | |
124 | size_t size, len_read = 0; | |
125 | char *metadata_buf = NULL; | |
126 | FILE *fp = NULL; | |
127 | enum ctf_metadata_decoder_status decoder_status; | |
14f28187 FD |
128 | enum lttng_live_iterator_status status = |
129 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
c01594de | 130 | bt_logging_level log_level = trace->log_level; |
2ece7dd0 | 131 | bt_self_component *self_comp = trace->self_comp; |
7cdc2bab MD |
132 | |
133 | /* No metadata stream yet. */ | |
134 | if (!metadata) { | |
135 | if (session->new_streams_needed) { | |
14f28187 | 136 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
137 | } else { |
138 | session->new_streams_needed = true; | |
14f28187 | 139 | status = LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; |
7cdc2bab MD |
140 | } |
141 | goto end; | |
142 | } | |
143 | ||
6f79a7cf MD |
144 | if (!metadata->trace) { |
145 | trace->new_metadata_needed = false; | |
146 | } | |
147 | ||
7cdc2bab MD |
148 | if (!trace->new_metadata_needed) { |
149 | goto end; | |
150 | } | |
151 | ||
152 | /* Open for writing */ | |
153 | fp = bt_open_memstream(&metadata_buf, &size); | |
154 | if (!fp) { | |
2ece7dd0 | 155 | BT_COMP_LOGE("Metadata open_memstream: %s", strerror(errno)); |
7cdc2bab MD |
156 | goto error; |
157 | } | |
158 | ||
159 | /* Grab all available metadata. */ | |
160 | do { | |
161 | /* | |
162 | * get_one_metadata_packet returns the number of bytes | |
163 | * received, 0 when we have received everything, a | |
164 | * negative value on error. | |
165 | */ | |
166 | ret = lttng_live_get_one_metadata_packet(trace, fp); | |
167 | if (ret > 0) { | |
168 | len_read += ret; | |
169 | } | |
170 | } while (ret > 0); | |
171 | ||
172 | /* | |
173 | * Consider metadata closed as soon as we get an error reading | |
174 | * it (e.g. cannot be found). | |
175 | */ | |
176 | if (ret < 0) { | |
177 | if (!metadata->closed) { | |
178 | metadata->closed = true; | |
179 | /* | |
180 | * Release our reference on the trace as soon as | |
181 | * we know the metadata stream is not available | |
182 | * anymore. This won't necessarily teardown the | |
183 | * metadata objects immediately, but only when | |
184 | * the data streams are done. | |
185 | */ | |
6f79a7cf | 186 | metadata->trace = NULL; |
7cdc2bab | 187 | } |
4c66436f | 188 | if (errno == EINTR) { |
9b4f9b42 PP |
189 | if (lttng_live_graph_is_canceled( |
190 | session->lttng_live_msg_iter)) { | |
14f28187 | 191 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f MD |
192 | goto end; |
193 | } | |
194 | } | |
7cdc2bab MD |
195 | } |
196 | ||
197 | if (bt_close_memstream(&metadata_buf, &size, fp)) { | |
2ece7dd0 | 198 | BT_COMP_LOGE("bt_close_memstream: %s", strerror(errno)); |
7cdc2bab MD |
199 | } |
200 | ret = 0; | |
201 | fp = NULL; | |
202 | ||
203 | if (len_read == 0) { | |
204 | if (!trace->trace) { | |
14f28187 | 205 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
206 | goto end; |
207 | } | |
208 | trace->new_metadata_needed = false; | |
209 | goto end; | |
210 | } | |
211 | ||
7cdc2bab MD |
212 | fp = bt_fmemopen(metadata_buf, len_read, "rb"); |
213 | if (!fp) { | |
2ece7dd0 | 214 | BT_COMP_LOGE("Cannot memory-open metadata buffer: %s", |
7cdc2bab MD |
215 | strerror(errno)); |
216 | goto error; | |
217 | } | |
218 | ||
14f28187 FD |
219 | /* |
220 | * The call to ctf_metadata_decoder_decode will append new metadata to | |
221 | * our current trace class. | |
222 | */ | |
7cdc2bab MD |
223 | decoder_status = ctf_metadata_decoder_decode(metadata->decoder, fp); |
224 | switch (decoder_status) { | |
225 | case CTF_METADATA_DECODER_STATUS_OK: | |
14f28187 | 226 | if (!trace->trace_class) { |
335a2da5 PP |
227 | struct ctf_trace_class *tc = |
228 | ctf_metadata_decoder_borrow_ctf_trace_class( | |
229 | metadata->decoder); | |
230 | ||
14f28187 FD |
231 | trace->trace_class = |
232 | ctf_metadata_decoder_get_ir_trace_class( | |
233 | metadata->decoder); | |
234 | trace->trace = bt_trace_create(trace->trace_class); | |
335a2da5 PP |
235 | if (!trace->trace) { |
236 | goto error; | |
237 | } | |
238 | if (ctf_trace_class_configure_ir_trace(tc, | |
239 | trace->trace)) { | |
240 | goto error; | |
241 | } | |
14f28187 | 242 | if (!stream_classes_all_have_default_clock_class( |
2ece7dd0 PP |
243 | trace->trace_class, log_level, |
244 | self_comp)) { | |
14f28187 FD |
245 | /* Error logged in function. */ |
246 | goto error; | |
247 | } | |
248 | trace->clock_class = | |
249 | borrow_any_clock_class(trace->trace_class); | |
7cdc2bab | 250 | } |
14f28187 FD |
251 | trace->new_metadata_needed = false; |
252 | ||
7cdc2bab MD |
253 | break; |
254 | case CTF_METADATA_DECODER_STATUS_INCOMPLETE: | |
14f28187 | 255 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
256 | break; |
257 | case CTF_METADATA_DECODER_STATUS_ERROR: | |
258 | case CTF_METADATA_DECODER_STATUS_INVAL_VERSION: | |
259 | case CTF_METADATA_DECODER_STATUS_IR_VISITOR_ERROR: | |
260 | goto error; | |
261 | } | |
262 | ||
263 | goto end; | |
264 | error: | |
14f28187 | 265 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
7cdc2bab MD |
266 | end: |
267 | if (fp) { | |
268 | int closeret; | |
269 | ||
270 | closeret = fclose(fp); | |
271 | if (closeret) { | |
2ece7dd0 | 272 | BT_COMP_LOGE("Error on fclose"); |
7cdc2bab MD |
273 | } |
274 | } | |
6f79a7cf | 275 | free(metadata_buf); |
7cdc2bab MD |
276 | return status; |
277 | } | |
278 | ||
279 | BT_HIDDEN | |
280 | int lttng_live_metadata_create_stream(struct lttng_live_session *session, | |
2ece7dd0 | 281 | uint64_t ctf_trace_id, uint64_t stream_id, |
06994c71 | 282 | const char *trace_name) |
7cdc2bab MD |
283 | { |
284 | struct lttng_live_metadata *metadata = NULL; | |
285 | struct lttng_live_trace *trace; | |
06994c71 | 286 | const char *match; |
0746848c | 287 | struct ctf_metadata_decoder_config cfg = { |
c01594de | 288 | .log_level = session->log_level, |
2ece7dd0 | 289 | .self_comp = session->self_comp, |
0746848c PP |
290 | .clock_class_offset_s = 0, |
291 | .clock_class_offset_ns = 0, | |
292 | }; | |
7cdc2bab MD |
293 | |
294 | metadata = g_new0(struct lttng_live_metadata, 1); | |
295 | if (!metadata) { | |
296 | return -1; | |
297 | } | |
c01594de | 298 | metadata->log_level = session->log_level; |
2ece7dd0 | 299 | metadata->self_comp = session->self_comp; |
7cdc2bab | 300 | metadata->stream_id = stream_id; |
14f28187 | 301 | |
06994c71 MD |
302 | match = strstr(trace_name, session->session_name->str); |
303 | if (!match) { | |
304 | goto error; | |
305 | } | |
14f28187 | 306 | |
f7b785ac | 307 | metadata->decoder = ctf_metadata_decoder_create(&cfg); |
7cdc2bab MD |
308 | if (!metadata->decoder) { |
309 | goto error; | |
310 | } | |
14f28187 | 311 | trace = lttng_live_borrow_trace(session, ctf_trace_id); |
7cdc2bab MD |
312 | if (!trace) { |
313 | goto error; | |
314 | } | |
315 | metadata->trace = trace; | |
316 | trace->metadata = metadata; | |
317 | return 0; | |
318 | ||
319 | error: | |
320 | ctf_metadata_decoder_destroy(metadata->decoder); | |
321 | g_free(metadata); | |
322 | return -1; | |
323 | } | |
324 | ||
325 | BT_HIDDEN | |
326 | void lttng_live_metadata_fini(struct lttng_live_trace *trace) | |
327 | { | |
328 | struct lttng_live_metadata *metadata = trace->metadata; | |
329 | ||
330 | if (!metadata) { | |
331 | return; | |
332 | } | |
7cdc2bab MD |
333 | ctf_metadata_decoder_destroy(metadata->decoder); |
334 | trace->metadata = NULL; | |
7cdc2bab MD |
335 | g_free(metadata); |
336 | } |