4 * Babeltrace CTF file system Reader Component queries
6 * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
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
31 #include "../common/metadata/decoder.h"
32 #include <babeltrace/common-internal.h>
33 #include <babeltrace/babeltrace-internal.h>
34 #include <babeltrace/ctf-ir/stream.h>
37 #define BT_LOG_TAG "PLUGIN-CTF-FS-QUERY-SRC"
40 #define METADATA_TEXT_SIG "/* CTF 1.8"
49 struct bt_value
*metadata_info_query(struct bt_component_class
*comp_class
,
50 struct bt_value
*params
)
52 struct bt_value
*result
= NULL
;
53 struct bt_value
*path_value
= NULL
;
54 char *metadata_text
= NULL
;
55 FILE *metadata_fp
= NULL
;
56 GString
*g_metadata_text
= NULL
;
62 result
= bt_value_map_create();
67 if (!bt_value_is_map(params
)) {
69 "Query parameters is not a map value object\n");
73 path_value
= bt_value_map_get(params
, "path");
74 ret
= bt_value_string_get(path_value
, &path
);
77 "Cannot get `path` string parameter\n");
82 metadata_fp
= ctf_fs_metadata_open_file(path
);
85 "Cannot open trace at path `%s`\n", path
);
89 is_packetized
= ctf_metadata_decoder_is_packetized(metadata_fp
,
93 ret
= ctf_metadata_decoder_packetized_file_stream_to_buf(
94 metadata_fp
, &metadata_text
, bo
);
97 "Cannot decode packetized metadata file\n");
103 ret
= fseek(metadata_fp
, 0, SEEK_END
);
105 fprintf(stderr
, "Error in fseek: %s", strerror(errno
));
108 filesize
= ftell(metadata_fp
);
110 fprintf(stderr
, "Error in ftell: %s", strerror(errno
));
114 metadata_text
= malloc(filesize
+ 1);
115 if (!metadata_text
) {
117 "Cannot allocate buffer for metadata text\n");
121 if (fread(metadata_text
, filesize
, 1, metadata_fp
) != 1) {
123 "Cannot read metadata file\n");
127 metadata_text
[filesize
] = '\0';
130 g_metadata_text
= g_string_new(NULL
);
131 if (!g_metadata_text
) {
135 if (strncmp(metadata_text
, METADATA_TEXT_SIG
,
136 sizeof(METADATA_TEXT_SIG
) - 1) != 0) {
137 g_string_assign(g_metadata_text
, METADATA_TEXT_SIG
);
138 g_string_append(g_metadata_text
, " */\n\n");
141 g_string_append(g_metadata_text
, metadata_text
);
143 ret
= bt_value_map_insert_string(result
, "text",
144 g_metadata_text
->str
);
146 fprintf(stderr
, "Cannot insert metadata text into result\n");
150 ret
= bt_value_map_insert_bool(result
, "is-packetized",
153 fprintf(stderr
, "Cannot insert is packetized into result\n");
166 if (g_metadata_text
) {
167 g_string_free(g_metadata_text
, TRUE
);
176 int add_range(struct bt_value
*info
, struct range
*range
,
177 const char *range_name
)
180 enum bt_value_status status
;
181 struct bt_value
*range_map
= NULL
;
188 range_map
= bt_value_map_create();
194 status
= bt_value_map_insert_integer(range_map
, "begin",
196 if (status
!= BT_VALUE_STATUS_OK
) {
201 status
= bt_value_map_insert_integer(range_map
, "end",
203 if (status
!= BT_VALUE_STATUS_OK
) {
208 status
= bt_value_map_insert(info
, range_name
, range_map
);
209 if (status
!= BT_VALUE_STATUS_OK
) {
219 int add_stream_ids(struct bt_value
*info
, struct bt_ctf_stream
*stream
)
222 int64_t stream_class_id
, stream_instance_id
;
223 enum bt_value_status status
;
224 struct bt_ctf_stream_class
*stream_class
= NULL
;
226 stream_instance_id
= bt_ctf_stream_get_id(stream
);
227 if (stream_instance_id
!= -1) {
228 status
= bt_value_map_insert_integer(info
, "id",
230 if (status
!= BT_VALUE_STATUS_OK
) {
236 stream_class
= bt_ctf_stream_get_class(stream
);
242 stream_class_id
= bt_ctf_stream_class_get_id(stream_class
);
243 if (stream_class_id
== -1) {
248 status
= bt_value_map_insert_integer(info
, "class-id", stream_class_id
);
249 if (status
!= BT_VALUE_STATUS_OK
) {
254 bt_put(stream_class
);
259 int populate_stream_info(struct ctf_fs_ds_file_group
*group
,
260 struct bt_value
*group_info
,
261 struct range
*stream_range
)
265 enum bt_value_status status
;
266 struct bt_value
*file_paths
;
268 stream_range
->begin_ns
= INT64_MAX
;
269 stream_range
->end_ns
= 0;
271 file_paths
= bt_value_array_create();
277 for (file_idx
= 0; file_idx
< group
->ds_file_infos
->len
; file_idx
++) {
278 int64_t file_begin_epoch
, file_end_epoch
;
279 struct ctf_fs_ds_file_info
*info
=
280 g_ptr_array_index(group
->ds_file_infos
,
283 if (!info
->index
|| info
->index
->entries
->len
== 0) {
284 BT_LOGW("Cannot determine range of unindexed stream file \'%s\'",
290 status
= bt_value_array_append_string(file_paths
,
292 if (status
!= BT_VALUE_STATUS_OK
) {
298 * file range is from timestamp_begin of the first entry to the
299 * timestamp_end of the last entry.
301 file_begin_epoch
= ((struct ctf_fs_ds_index_entry
*) &g_array_index(info
->index
->entries
,
302 struct ctf_fs_ds_index_entry
, 0))->timestamp_begin_ns
;
303 file_end_epoch
= ((struct ctf_fs_ds_index_entry
*) &g_array_index(info
->index
->entries
,
304 struct ctf_fs_ds_index_entry
, info
->index
->entries
->len
- 1))->timestamp_end_ns
;
306 stream_range
->begin_ns
= min(stream_range
->begin_ns
, file_begin_epoch
);
307 stream_range
->end_ns
= max(stream_range
->end_ns
, file_end_epoch
);
308 stream_range
->set
= true;
311 if (stream_range
->set
) {
312 ret
= add_range(group_info
, stream_range
, "range-ns");
318 status
= bt_value_map_insert(group_info
, "paths", file_paths
);
319 if (status
!= BT_VALUE_STATUS_OK
) {
324 ret
= add_stream_ids(group_info
, group
->stream
);
334 int populate_trace_info(const char *trace_path
, const char *trace_name
,
335 struct bt_value
*trace_info
)
339 struct ctf_fs_trace
*trace
= NULL
;
340 enum bt_value_status status
;
341 struct bt_value
*file_groups
;
342 struct range trace_range
= {
343 .begin_ns
= INT64_MAX
,
347 struct range trace_intersection
= {
353 file_groups
= bt_value_array_create();
358 status
= bt_value_map_insert_string(trace_info
, "name",
360 if (status
!= BT_VALUE_STATUS_OK
) {
364 status
= bt_value_map_insert_string(trace_info
, "path",
366 if (status
!= BT_VALUE_STATUS_OK
) {
371 trace
= ctf_fs_trace_create(trace_path
, trace_name
, NULL
);
373 BT_LOGE("Failed to create fs trace at \'%s\'", trace_path
);
378 assert(trace
->ds_file_groups
);
379 /* Add trace range info only if it contains streams. */
380 if (trace
->ds_file_groups
->len
== 0) {
385 /* Find range of all stream groups, and of the trace. */
386 for (group_idx
= 0; group_idx
< trace
->ds_file_groups
->len
;
388 struct bt_value
*group_info
;
389 struct range group_range
= { .set
= false };
390 struct ctf_fs_ds_file_group
*group
= g_ptr_array_index(
391 trace
->ds_file_groups
, group_idx
);
393 group_info
= bt_value_map_create();
399 ret
= populate_stream_info(group
, group_info
, &group_range
);
405 if (group_range
.set
) {
406 trace_range
.begin_ns
= min(trace_range
.begin_ns
,
407 group_range
.begin_ns
);
408 trace_range
.end_ns
= max(trace_range
.end_ns
,
410 trace_range
.set
= true;
412 trace_intersection
.begin_ns
= max(trace_intersection
.begin_ns
,
413 group_range
.begin_ns
);
414 trace_intersection
.end_ns
= min(trace_intersection
.end_ns
,
416 trace_intersection
.set
= true;
417 status
= bt_value_array_append(file_groups
, group_info
);
419 if (status
!= BT_VALUE_STATUS_OK
) {
425 ret
= add_range(trace_info
, &trace_range
, "range-ns");
429 ret
= add_range(trace_info
, &trace_intersection
,
430 "intersection-range-ns");
435 status
= bt_value_map_insert(trace_info
, "streams", file_groups
);
437 if (status
!= BT_VALUE_STATUS_OK
) {
444 ctf_fs_trace_destroy(trace
);
449 struct bt_value
*trace_info_query(struct bt_component_class
*comp_class
,
450 struct bt_value
*params
)
452 struct bt_value
*trace_infos
= NULL
;
453 struct bt_value
*path_value
= NULL
;
455 const char *path
= NULL
;
456 GList
*trace_paths
= NULL
;
457 GList
*trace_names
= NULL
;
458 GList
*tp_node
= NULL
;
459 GList
*tn_node
= NULL
;
460 GString
*normalized_path
= NULL
;
462 if (!bt_value_is_map(params
)) {
463 BT_LOGE("Query parameters is not a map value object.");
467 path_value
= bt_value_map_get(params
, "path");
468 ret
= bt_value_string_get(path_value
, &path
);
470 BT_LOGE("Cannot get `path` string parameter.");
474 normalized_path
= bt_common_normalize_path(path
, NULL
);
475 if (!normalized_path
) {
476 BT_LOGE("Failed to normalize path: `%s`.", path
);
481 ret
= ctf_fs_find_traces(&trace_paths
, normalized_path
->str
);
486 trace_names
= ctf_fs_create_trace_names(trace_paths
,
487 normalized_path
->str
);
489 BT_LOGE("Cannot create trace names from trace paths.");
493 trace_infos
= bt_value_array_create();
498 /* Iterates over both trace paths and names simultaneously. */
499 for (tp_node
= trace_paths
, tn_node
= trace_names
; tp_node
;
500 tp_node
= g_list_next(tp_node
),
501 tn_node
= g_list_next(tn_node
)) {
502 GString
*trace_path
= tp_node
->data
;
503 GString
*trace_name
= tn_node
->data
;
504 enum bt_value_status status
;
505 struct bt_value
*trace_info
;
507 trace_info
= bt_value_map_create();
509 BT_LOGE("Failed to create trace info map.");
513 ret
= populate_trace_info(trace_path
->str
, trace_name
->str
,
520 status
= bt_value_array_append(trace_infos
, trace_info
);
522 if (status
!= BT_VALUE_STATUS_OK
) {
532 if (normalized_path
) {
533 g_string_free(normalized_path
, TRUE
);
536 for (tp_node
= trace_paths
; tp_node
; tp_node
= g_list_next(tp_node
)) {
538 g_string_free(tp_node
->data
, TRUE
);
541 g_list_free(trace_paths
);
544 for (tn_node
= trace_names
; tn_node
; tn_node
= g_list_next(tn_node
)) {
546 g_string_free(tn_node
->data
, TRUE
);
549 g_list_free(trace_names
);
551 /* "path" becomes invalid with the release of path_value. */
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