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 | ||
c01594de | 27 | #define BT_LOG_OUTPUT_LEVEL log_level |
350ad6c1 | 28 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/META" |
c01594de | 29 | #include "logging/log.h" |
020bc26f | 30 | |
7cdc2bab MD |
31 | #include <stdio.h> |
32 | #include <stdint.h> | |
33 | #include <stdlib.h> | |
34 | #include <stdbool.h> | |
35 | #include <glib.h> | |
578e048b | 36 | #include "compat/memstream.h" |
3fadfbc0 | 37 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 38 | |
7cdc2bab MD |
39 | #include "metadata.h" |
40 | #include "../common/metadata/decoder.h" | |
41 | ||
42 | #define TSDL_MAGIC 0x75d11d57 | |
43 | ||
44 | struct packet_header { | |
45 | uint32_t magic; | |
46 | uint8_t uuid[16]; | |
47 | uint32_t checksum; | |
48 | uint32_t content_size; | |
49 | uint32_t packet_size; | |
50 | uint8_t compression_scheme; | |
51 | uint8_t encryption_scheme; | |
52 | uint8_t checksum_scheme; | |
53 | uint8_t major; | |
54 | uint8_t minor; | |
55 | } __attribute__((__packed__)); | |
56 | ||
14f28187 | 57 | |
7cdc2bab | 58 | static |
c01594de PP |
59 | bool stream_classes_all_have_default_clock_class(bt_trace_class *tc, |
60 | bt_logging_level log_level) | |
7cdc2bab | 61 | { |
14f28187 FD |
62 | uint64_t i, sc_count; |
63 | const bt_clock_class *cc = NULL; | |
64 | const bt_stream_class *sc; | |
65 | bool ret = true; | |
7cdc2bab | 66 | |
14f28187 FD |
67 | sc_count = bt_trace_class_get_stream_class_count(tc); |
68 | for (i = 0; i < sc_count; i++) { | |
69 | sc = bt_trace_class_borrow_stream_class_by_index_const(tc, i); | |
7cdc2bab | 70 | |
14f28187 | 71 | BT_ASSERT(sc); |
7cdc2bab | 72 | |
14f28187 FD |
73 | cc = bt_stream_class_borrow_default_clock_class_const(sc); |
74 | if (!cc) { | |
75 | ret = false; | |
76 | BT_LOGE("Stream class doesn't have a default clock class: " | |
77 | "sc-id=%" PRIu64 ", sc-name=\"%s\"", | |
78 | bt_stream_class_get_id(sc), | |
79 | bt_stream_class_get_name(sc)); | |
80 | goto end; | |
7cdc2bab MD |
81 | } |
82 | } | |
83 | ||
7cdc2bab | 84 | end: |
14f28187 FD |
85 | return ret; |
86 | } | |
87 | /* | |
88 | * Iterate over the stream classes and returns the first clock class | |
89 | * encountered. This is useful to create message iterator inactivity message as | |
90 | * we don't need a particular clock class. | |
91 | */ | |
92 | static | |
93 | const bt_clock_class *borrow_any_clock_class(bt_trace_class *tc) | |
94 | { | |
95 | uint64_t i, sc_count; | |
96 | const bt_clock_class *cc = NULL; | |
97 | const bt_stream_class *sc; | |
98 | ||
99 | sc_count = bt_trace_class_get_stream_class_count(tc); | |
100 | for (i = 0; i < sc_count; i++) { | |
101 | sc = bt_trace_class_borrow_stream_class_by_index_const(tc, i); | |
102 | BT_ASSERT(sc); | |
103 | ||
104 | cc = bt_stream_class_borrow_default_clock_class_const(sc); | |
105 | if (cc) { | |
106 | goto end; | |
107 | } | |
108 | } | |
109 | end: | |
110 | BT_ASSERT(cc); | |
111 | return cc; | |
7cdc2bab MD |
112 | } |
113 | ||
114 | BT_HIDDEN | |
14f28187 | 115 | enum lttng_live_iterator_status lttng_live_metadata_update( |
7cdc2bab MD |
116 | struct lttng_live_trace *trace) |
117 | { | |
118 | struct lttng_live_session *session = trace->session; | |
7cdc2bab | 119 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 FD |
120 | struct lttng_live_component *lttng_live = |
121 | session->lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab MD |
122 | ssize_t ret = 0; |
123 | size_t size, len_read = 0; | |
124 | char *metadata_buf = NULL; | |
125 | FILE *fp = NULL; | |
126 | enum ctf_metadata_decoder_status decoder_status; | |
14f28187 FD |
127 | enum lttng_live_iterator_status status = |
128 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
c01594de | 129 | bt_logging_level log_level = trace->log_level; |
7cdc2bab MD |
130 | |
131 | /* No metadata stream yet. */ | |
132 | if (!metadata) { | |
133 | if (session->new_streams_needed) { | |
14f28187 | 134 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
135 | } else { |
136 | session->new_streams_needed = true; | |
14f28187 | 137 | status = LTTNG_LIVE_ITERATOR_STATUS_CONTINUE; |
7cdc2bab MD |
138 | } |
139 | goto end; | |
140 | } | |
141 | ||
6f79a7cf MD |
142 | if (!metadata->trace) { |
143 | trace->new_metadata_needed = false; | |
144 | } | |
145 | ||
7cdc2bab MD |
146 | if (!trace->new_metadata_needed) { |
147 | goto end; | |
148 | } | |
149 | ||
150 | /* Open for writing */ | |
151 | fp = bt_open_memstream(&metadata_buf, &size); | |
152 | if (!fp) { | |
087bc060 | 153 | BT_LOGE("Metadata open_memstream: %s", strerror(errno)); |
7cdc2bab MD |
154 | goto error; |
155 | } | |
156 | ||
157 | /* Grab all available metadata. */ | |
158 | do { | |
159 | /* | |
160 | * get_one_metadata_packet returns the number of bytes | |
161 | * received, 0 when we have received everything, a | |
162 | * negative value on error. | |
163 | */ | |
164 | ret = lttng_live_get_one_metadata_packet(trace, fp); | |
165 | if (ret > 0) { | |
166 | len_read += ret; | |
167 | } | |
168 | } while (ret > 0); | |
169 | ||
170 | /* | |
171 | * Consider metadata closed as soon as we get an error reading | |
172 | * it (e.g. cannot be found). | |
173 | */ | |
174 | if (ret < 0) { | |
175 | if (!metadata->closed) { | |
176 | metadata->closed = true; | |
177 | /* | |
178 | * Release our reference on the trace as soon as | |
179 | * we know the metadata stream is not available | |
180 | * anymore. This won't necessarily teardown the | |
181 | * metadata objects immediately, but only when | |
182 | * the data streams are done. | |
183 | */ | |
6f79a7cf | 184 | metadata->trace = NULL; |
7cdc2bab | 185 | } |
4c66436f | 186 | if (errno == EINTR) { |
42521b69 | 187 | if (lttng_live_graph_is_canceled(lttng_live)) { |
14f28187 | 188 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f MD |
189 | goto end; |
190 | } | |
191 | } | |
7cdc2bab MD |
192 | } |
193 | ||
194 | if (bt_close_memstream(&metadata_buf, &size, fp)) { | |
195 | BT_LOGE("bt_close_memstream: %s", strerror(errno)); | |
196 | } | |
197 | ret = 0; | |
198 | fp = NULL; | |
199 | ||
200 | if (len_read == 0) { | |
201 | if (!trace->trace) { | |
14f28187 | 202 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
203 | goto end; |
204 | } | |
205 | trace->new_metadata_needed = false; | |
206 | goto end; | |
207 | } | |
208 | ||
7cdc2bab MD |
209 | fp = bt_fmemopen(metadata_buf, len_read, "rb"); |
210 | if (!fp) { | |
087bc060 | 211 | BT_LOGE("Cannot memory-open metadata buffer: %s", |
7cdc2bab MD |
212 | strerror(errno)); |
213 | goto error; | |
214 | } | |
215 | ||
14f28187 FD |
216 | /* |
217 | * The call to ctf_metadata_decoder_decode will append new metadata to | |
218 | * our current trace class. | |
219 | */ | |
7cdc2bab MD |
220 | decoder_status = ctf_metadata_decoder_decode(metadata->decoder, fp); |
221 | switch (decoder_status) { | |
222 | case CTF_METADATA_DECODER_STATUS_OK: | |
14f28187 FD |
223 | if (!trace->trace_class) { |
224 | trace->trace_class = | |
225 | ctf_metadata_decoder_get_ir_trace_class( | |
226 | metadata->decoder); | |
227 | trace->trace = bt_trace_create(trace->trace_class); | |
228 | if (!stream_classes_all_have_default_clock_class( | |
c01594de | 229 | trace->trace_class, log_level)) { |
14f28187 FD |
230 | /* Error logged in function. */ |
231 | goto error; | |
232 | } | |
233 | trace->clock_class = | |
234 | borrow_any_clock_class(trace->trace_class); | |
7cdc2bab | 235 | } |
14f28187 FD |
236 | trace->new_metadata_needed = false; |
237 | ||
7cdc2bab MD |
238 | break; |
239 | case CTF_METADATA_DECODER_STATUS_INCOMPLETE: | |
14f28187 | 240 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
241 | break; |
242 | case CTF_METADATA_DECODER_STATUS_ERROR: | |
243 | case CTF_METADATA_DECODER_STATUS_INVAL_VERSION: | |
244 | case CTF_METADATA_DECODER_STATUS_IR_VISITOR_ERROR: | |
245 | goto error; | |
246 | } | |
247 | ||
248 | goto end; | |
249 | error: | |
14f28187 | 250 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
7cdc2bab MD |
251 | end: |
252 | if (fp) { | |
253 | int closeret; | |
254 | ||
255 | closeret = fclose(fp); | |
256 | if (closeret) { | |
087bc060 | 257 | BT_LOGE("Error on fclose"); |
7cdc2bab MD |
258 | } |
259 | } | |
6f79a7cf | 260 | free(metadata_buf); |
7cdc2bab MD |
261 | return status; |
262 | } | |
263 | ||
264 | BT_HIDDEN | |
265 | int lttng_live_metadata_create_stream(struct lttng_live_session *session, | |
266 | uint64_t ctf_trace_id, | |
06994c71 MD |
267 | uint64_t stream_id, |
268 | const char *trace_name) | |
7cdc2bab | 269 | { |
14f28187 FD |
270 | struct lttng_live_component *lttng_live = |
271 | session->lttng_live_msg_iter->lttng_live_comp; | |
7cdc2bab MD |
272 | struct lttng_live_metadata *metadata = NULL; |
273 | struct lttng_live_trace *trace; | |
06994c71 | 274 | const char *match; |
0746848c | 275 | struct ctf_metadata_decoder_config cfg = { |
c01594de | 276 | .log_level = session->log_level, |
f7b785ac PP |
277 | .self_comp = |
278 | bt_self_component_source_as_self_component( | |
279 | lttng_live->self_comp), | |
0746848c PP |
280 | .clock_class_offset_s = 0, |
281 | .clock_class_offset_ns = 0, | |
282 | }; | |
7cdc2bab MD |
283 | |
284 | metadata = g_new0(struct lttng_live_metadata, 1); | |
285 | if (!metadata) { | |
286 | return -1; | |
287 | } | |
c01594de | 288 | metadata->log_level = session->log_level; |
7cdc2bab | 289 | metadata->stream_id = stream_id; |
14f28187 | 290 | |
06994c71 MD |
291 | match = strstr(trace_name, session->session_name->str); |
292 | if (!match) { | |
293 | goto error; | |
294 | } | |
14f28187 | 295 | |
f7b785ac | 296 | metadata->decoder = ctf_metadata_decoder_create(&cfg); |
7cdc2bab MD |
297 | if (!metadata->decoder) { |
298 | goto error; | |
299 | } | |
14f28187 | 300 | trace = lttng_live_borrow_trace(session, ctf_trace_id); |
7cdc2bab MD |
301 | if (!trace) { |
302 | goto error; | |
303 | } | |
304 | metadata->trace = trace; | |
305 | trace->metadata = metadata; | |
306 | return 0; | |
307 | ||
308 | error: | |
309 | ctf_metadata_decoder_destroy(metadata->decoder); | |
310 | g_free(metadata); | |
311 | return -1; | |
312 | } | |
313 | ||
314 | BT_HIDDEN | |
315 | void lttng_live_metadata_fini(struct lttng_live_trace *trace) | |
316 | { | |
317 | struct lttng_live_metadata *metadata = trace->metadata; | |
318 | ||
319 | if (!metadata) { | |
320 | return; | |
321 | } | |
7cdc2bab MD |
322 | ctf_metadata_decoder_destroy(metadata->decoder); |
323 | trace->metadata = NULL; | |
7cdc2bab MD |
324 | g_free(metadata); |
325 | } |