| 1 | /* |
| 2 | * query.c |
| 3 | * |
| 4 | * Babeltrace CTF file system Reader Component queries |
| 5 | * |
| 6 | * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 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 | |
| 27 | #define BT_LOG_OUTPUT_LEVEL log_level |
| 28 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.FS/QUERY" |
| 29 | #include "logging/log.h" |
| 30 | |
| 31 | #include "query.h" |
| 32 | #include <stdbool.h> |
| 33 | #include "common/assert.h" |
| 34 | #include "metadata.h" |
| 35 | #include "../common/metadata/decoder.h" |
| 36 | #include "common/common.h" |
| 37 | #include "common/macros.h" |
| 38 | #include <babeltrace2/babeltrace.h> |
| 39 | #include "fs.h" |
| 40 | |
| 41 | #define METADATA_TEXT_SIG "/* CTF 1.8" |
| 42 | |
| 43 | struct range { |
| 44 | int64_t begin_ns; |
| 45 | int64_t end_ns; |
| 46 | bool set; |
| 47 | }; |
| 48 | |
| 49 | BT_HIDDEN |
| 50 | bt_component_class_query_method_status metadata_info_query( |
| 51 | bt_self_component_class_source *comp_class, |
| 52 | const bt_value *params, bt_logging_level log_level, |
| 53 | const bt_value **user_result) |
| 54 | { |
| 55 | bt_component_class_query_method_status status = |
| 56 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; |
| 57 | bt_value *result = NULL; |
| 58 | const bt_value *path_value = NULL; |
| 59 | char *metadata_text = NULL; |
| 60 | FILE *metadata_fp = NULL; |
| 61 | GString *g_metadata_text = NULL; |
| 62 | int ret; |
| 63 | int bo; |
| 64 | const char *path; |
| 65 | bool is_packetized; |
| 66 | |
| 67 | result = bt_value_map_create(); |
| 68 | if (!result) { |
| 69 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
| 70 | goto error; |
| 71 | } |
| 72 | |
| 73 | BT_ASSERT(params); |
| 74 | |
| 75 | if (!bt_value_is_map(params)) { |
| 76 | BT_LOGE_STR("Query parameters is not a map value object."); |
| 77 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
| 78 | goto error; |
| 79 | } |
| 80 | |
| 81 | path_value = bt_value_map_borrow_entry_value_const(params, "path"); |
| 82 | if (!path_value) { |
| 83 | BT_LOGE_STR("Mandatory `path` parameter missing"); |
| 84 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
| 85 | goto error; |
| 86 | } |
| 87 | |
| 88 | if (!bt_value_is_string(path_value)) { |
| 89 | BT_LOGE_STR("`path` parameter is required to be a string value"); |
| 90 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
| 91 | goto error; |
| 92 | } |
| 93 | |
| 94 | path = bt_value_string_get(path_value); |
| 95 | |
| 96 | BT_ASSERT(path); |
| 97 | metadata_fp = ctf_fs_metadata_open_file(path); |
| 98 | if (!metadata_fp) { |
| 99 | BT_LOGE("Cannot open trace metadata: path=\"%s\".", path); |
| 100 | goto error; |
| 101 | } |
| 102 | |
| 103 | is_packetized = ctf_metadata_decoder_is_packetized(metadata_fp, |
| 104 | &bo, log_level, NULL); |
| 105 | |
| 106 | if (is_packetized) { |
| 107 | ret = ctf_metadata_decoder_packetized_file_stream_to_buf( |
| 108 | metadata_fp, &metadata_text, bo, NULL, NULL, |
| 109 | log_level, NULL); |
| 110 | if (ret) { |
| 111 | BT_LOGE("Cannot decode packetized metadata file: path=\"%s\"", |
| 112 | path); |
| 113 | goto error; |
| 114 | } |
| 115 | } else { |
| 116 | long filesize; |
| 117 | |
| 118 | ret = fseek(metadata_fp, 0, SEEK_END); |
| 119 | if (ret) { |
| 120 | BT_LOGE_ERRNO("Failed to seek to the end of the metadata file", |
| 121 | ": path=\"%s\"", path); |
| 122 | goto error; |
| 123 | } |
| 124 | filesize = ftell(metadata_fp); |
| 125 | if (filesize < 0) { |
| 126 | BT_LOGE_ERRNO("Failed to get the current position in the metadata file", |
| 127 | ": path=\"%s\"", path); |
| 128 | goto error; |
| 129 | } |
| 130 | rewind(metadata_fp); |
| 131 | metadata_text = malloc(filesize + 1); |
| 132 | if (!metadata_text) { |
| 133 | BT_LOGE_STR("Cannot allocate buffer for metadata text."); |
| 134 | goto error; |
| 135 | } |
| 136 | |
| 137 | if (fread(metadata_text, filesize, 1, metadata_fp) != 1) { |
| 138 | BT_LOGE_ERRNO("Cannot read metadata file", ": path=\"%s\"", |
| 139 | path); |
| 140 | goto error; |
| 141 | } |
| 142 | |
| 143 | metadata_text[filesize] = '\0'; |
| 144 | } |
| 145 | |
| 146 | g_metadata_text = g_string_new(NULL); |
| 147 | if (!g_metadata_text) { |
| 148 | goto error; |
| 149 | } |
| 150 | |
| 151 | if (strncmp(metadata_text, METADATA_TEXT_SIG, |
| 152 | sizeof(METADATA_TEXT_SIG) - 1) != 0) { |
| 153 | g_string_assign(g_metadata_text, METADATA_TEXT_SIG); |
| 154 | g_string_append(g_metadata_text, " */\n\n"); |
| 155 | } |
| 156 | |
| 157 | g_string_append(g_metadata_text, metadata_text); |
| 158 | |
| 159 | ret = bt_value_map_insert_string_entry(result, "text", |
| 160 | g_metadata_text->str); |
| 161 | if (ret) { |
| 162 | BT_LOGE_STR("Cannot insert metadata text into query result."); |
| 163 | goto error; |
| 164 | } |
| 165 | |
| 166 | ret = bt_value_map_insert_bool_entry(result, "is-packetized", |
| 167 | is_packetized); |
| 168 | if (ret) { |
| 169 | BT_LOGE_STR("Cannot insert \"is-packetized\" attribute into query result."); |
| 170 | goto error; |
| 171 | } |
| 172 | |
| 173 | goto end; |
| 174 | |
| 175 | error: |
| 176 | BT_VALUE_PUT_REF_AND_RESET(result); |
| 177 | result = NULL; |
| 178 | |
| 179 | if (status >= 0) { |
| 180 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
| 181 | } |
| 182 | |
| 183 | end: |
| 184 | free(metadata_text); |
| 185 | |
| 186 | if (g_metadata_text) { |
| 187 | g_string_free(g_metadata_text, TRUE); |
| 188 | } |
| 189 | |
| 190 | if (metadata_fp) { |
| 191 | fclose(metadata_fp); |
| 192 | } |
| 193 | |
| 194 | *user_result = result; |
| 195 | return status; |
| 196 | } |
| 197 | |
| 198 | static |
| 199 | int add_range(bt_value *info, struct range *range, |
| 200 | const char *range_name) |
| 201 | { |
| 202 | int ret = 0; |
| 203 | bt_value_map_insert_entry_status status; |
| 204 | bt_value *range_map = NULL; |
| 205 | |
| 206 | if (!range->set) { |
| 207 | /* Not an error. */ |
| 208 | goto end; |
| 209 | } |
| 210 | |
| 211 | range_map = bt_value_map_create(); |
| 212 | if (!range_map) { |
| 213 | ret = -1; |
| 214 | goto end; |
| 215 | } |
| 216 | |
| 217 | status = bt_value_map_insert_signed_integer_entry(range_map, "begin", |
| 218 | range->begin_ns); |
| 219 | if (status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 220 | ret = -1; |
| 221 | goto end; |
| 222 | } |
| 223 | |
| 224 | status = bt_value_map_insert_signed_integer_entry(range_map, "end", |
| 225 | range->end_ns); |
| 226 | if (status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 227 | ret = -1; |
| 228 | goto end; |
| 229 | } |
| 230 | |
| 231 | status = bt_value_map_insert_entry(info, range_name, |
| 232 | range_map); |
| 233 | if (status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 234 | ret = -1; |
| 235 | goto end; |
| 236 | } |
| 237 | |
| 238 | end: |
| 239 | bt_value_put_ref(range_map); |
| 240 | return ret; |
| 241 | } |
| 242 | |
| 243 | static |
| 244 | int add_stream_ids(bt_value *info, struct ctf_fs_ds_file_group *ds_file_group) |
| 245 | { |
| 246 | int ret = 0; |
| 247 | bt_value_map_insert_entry_status status; |
| 248 | |
| 249 | if (ds_file_group->stream_id != UINT64_C(-1)) { |
| 250 | status = bt_value_map_insert_unsigned_integer_entry(info, "id", |
| 251 | ds_file_group->stream_id); |
| 252 | if (status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 253 | ret = -1; |
| 254 | goto end; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | status = bt_value_map_insert_unsigned_integer_entry(info, "class-id", |
| 259 | ds_file_group->sc->id); |
| 260 | if (status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 261 | ret = -1; |
| 262 | goto end; |
| 263 | } |
| 264 | |
| 265 | end: |
| 266 | return ret; |
| 267 | } |
| 268 | |
| 269 | static |
| 270 | int populate_stream_info(struct ctf_fs_ds_file_group *group, |
| 271 | bt_value *group_info, struct range *stream_range) |
| 272 | { |
| 273 | int ret = 0; |
| 274 | size_t file_idx; |
| 275 | bt_value_map_insert_entry_status insert_status; |
| 276 | bt_value_array_append_element_status append_status; |
| 277 | bt_value *file_paths; |
| 278 | struct ctf_fs_ds_index_entry *first_ds_index_entry, *last_ds_index_entry; |
| 279 | gchar *port_name = NULL; |
| 280 | |
| 281 | file_paths = bt_value_array_create(); |
| 282 | if (!file_paths) { |
| 283 | ret = -1; |
| 284 | goto end; |
| 285 | } |
| 286 | |
| 287 | for (file_idx = 0; file_idx < group->ds_file_infos->len; file_idx++) { |
| 288 | struct ctf_fs_ds_file_info *info = |
| 289 | g_ptr_array_index(group->ds_file_infos, |
| 290 | file_idx); |
| 291 | |
| 292 | append_status = bt_value_array_append_string_element(file_paths, |
| 293 | info->path->str); |
| 294 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { |
| 295 | ret = -1; |
| 296 | goto end; |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | /* |
| 301 | * Since each `struct ctf_fs_ds_file_group` has a sorted array of |
| 302 | * `struct ctf_fs_ds_index_entry`, we can compute the stream range from |
| 303 | * the timestamp_begin of the first index entry and the timestamp_end |
| 304 | * of the last index entry. |
| 305 | */ |
| 306 | BT_ASSERT(group->index); |
| 307 | BT_ASSERT(group->index->entries); |
| 308 | BT_ASSERT(group->index->entries->len > 0); |
| 309 | |
| 310 | /* First entry. */ |
| 311 | first_ds_index_entry = (struct ctf_fs_ds_index_entry *) g_ptr_array_index( |
| 312 | group->index->entries, 0); |
| 313 | |
| 314 | /* Last entry. */ |
| 315 | last_ds_index_entry = (struct ctf_fs_ds_index_entry *) g_ptr_array_index( |
| 316 | group->index->entries, group->index->entries->len - 1); |
| 317 | |
| 318 | stream_range->begin_ns = first_ds_index_entry->timestamp_begin_ns; |
| 319 | stream_range->end_ns = last_ds_index_entry->timestamp_end_ns; |
| 320 | |
| 321 | /* |
| 322 | * If any of the begin and end timestamps is not set it means that |
| 323 | * packets don't include `timestamp_begin` _and_ `timestamp_end` fields |
| 324 | * in their packet context so we can't set the range. |
| 325 | */ |
| 326 | stream_range->set = stream_range->begin_ns != UINT64_C(-1) && |
| 327 | stream_range->end_ns != UINT64_C(-1); |
| 328 | |
| 329 | ret = add_range(group_info, stream_range, "range-ns"); |
| 330 | if (ret) { |
| 331 | goto end; |
| 332 | } |
| 333 | |
| 334 | insert_status = bt_value_map_insert_entry(group_info, "paths", |
| 335 | file_paths); |
| 336 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 337 | ret = -1; |
| 338 | goto end; |
| 339 | } |
| 340 | |
| 341 | ret = add_stream_ids(group_info, group); |
| 342 | if (ret) { |
| 343 | goto end; |
| 344 | } |
| 345 | |
| 346 | port_name = ctf_fs_make_port_name(group); |
| 347 | if (!port_name) { |
| 348 | ret = -1; |
| 349 | goto end; |
| 350 | } |
| 351 | |
| 352 | insert_status = bt_value_map_insert_string_entry(group_info, |
| 353 | "port-name", port_name); |
| 354 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 355 | ret = -1; |
| 356 | goto end; |
| 357 | } |
| 358 | |
| 359 | end: |
| 360 | g_free(port_name); |
| 361 | bt_value_put_ref(file_paths); |
| 362 | return ret; |
| 363 | } |
| 364 | |
| 365 | static |
| 366 | int populate_trace_info(const struct ctf_fs_trace *trace, bt_value *trace_info) |
| 367 | { |
| 368 | int ret = 0; |
| 369 | size_t group_idx; |
| 370 | bt_value_map_insert_entry_status insert_status; |
| 371 | bt_value_array_append_element_status append_status; |
| 372 | bt_value *file_groups = NULL; |
| 373 | struct range trace_range = { |
| 374 | .begin_ns = INT64_MAX, |
| 375 | .end_ns = 0, |
| 376 | .set = false, |
| 377 | }; |
| 378 | struct range trace_intersection = { |
| 379 | .begin_ns = 0, |
| 380 | .end_ns = INT64_MAX, |
| 381 | .set = false, |
| 382 | }; |
| 383 | |
| 384 | BT_ASSERT(trace->ds_file_groups); |
| 385 | /* Add trace range info only if it contains streams. */ |
| 386 | if (trace->ds_file_groups->len == 0) { |
| 387 | ret = -1; |
| 388 | goto end; |
| 389 | } |
| 390 | |
| 391 | file_groups = bt_value_array_create(); |
| 392 | if (!file_groups) { |
| 393 | goto end; |
| 394 | } |
| 395 | |
| 396 | insert_status = bt_value_map_insert_string_entry(trace_info, "name", |
| 397 | trace->name->str); |
| 398 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 399 | ret = -1; |
| 400 | goto end; |
| 401 | } |
| 402 | insert_status = bt_value_map_insert_string_entry(trace_info, "path", |
| 403 | trace->path->str); |
| 404 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 405 | ret = -1; |
| 406 | goto end; |
| 407 | } |
| 408 | |
| 409 | /* Find range of all stream groups, and of the trace. */ |
| 410 | for (group_idx = 0; group_idx < trace->ds_file_groups->len; |
| 411 | group_idx++) { |
| 412 | bt_value *group_info; |
| 413 | struct range group_range = { .set = false }; |
| 414 | struct ctf_fs_ds_file_group *group = g_ptr_array_index( |
| 415 | trace->ds_file_groups, group_idx); |
| 416 | |
| 417 | group_info = bt_value_map_create(); |
| 418 | if (!group_info) { |
| 419 | ret = -1; |
| 420 | goto end; |
| 421 | } |
| 422 | |
| 423 | ret = populate_stream_info(group, group_info, &group_range); |
| 424 | if (ret) { |
| 425 | bt_value_put_ref(group_info); |
| 426 | goto end; |
| 427 | } |
| 428 | |
| 429 | append_status = bt_value_array_append_element(file_groups, |
| 430 | group_info); |
| 431 | bt_value_put_ref(group_info); |
| 432 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { |
| 433 | goto end; |
| 434 | } |
| 435 | |
| 436 | if (group_range.set) { |
| 437 | trace_range.begin_ns = MIN(trace_range.begin_ns, |
| 438 | group_range.begin_ns); |
| 439 | trace_range.end_ns = MAX(trace_range.end_ns, |
| 440 | group_range.end_ns); |
| 441 | trace_range.set = true; |
| 442 | |
| 443 | trace_intersection.begin_ns = MAX(trace_intersection.begin_ns, |
| 444 | group_range.begin_ns); |
| 445 | trace_intersection.end_ns = MIN(trace_intersection.end_ns, |
| 446 | group_range.end_ns); |
| 447 | trace_intersection.set = true; |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | ret = add_range(trace_info, &trace_range, "range-ns"); |
| 452 | if (ret) { |
| 453 | goto end; |
| 454 | } |
| 455 | |
| 456 | if (trace_intersection.begin_ns < trace_intersection.end_ns) { |
| 457 | ret = add_range(trace_info, &trace_intersection, |
| 458 | "intersection-range-ns"); |
| 459 | if (ret) { |
| 460 | goto end; |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | insert_status = bt_value_map_insert_entry(trace_info, "streams", |
| 465 | file_groups); |
| 466 | BT_VALUE_PUT_REF_AND_RESET(file_groups); |
| 467 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 468 | ret = -1; |
| 469 | goto end; |
| 470 | } |
| 471 | |
| 472 | end: |
| 473 | bt_value_put_ref(file_groups); |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | BT_HIDDEN |
| 478 | bt_component_class_query_method_status trace_info_query( |
| 479 | bt_self_component_class_source *comp_class, |
| 480 | const bt_value *params, bt_logging_level log_level, |
| 481 | const bt_value **user_result) |
| 482 | { |
| 483 | struct ctf_fs_component *ctf_fs = NULL; |
| 484 | bt_component_class_query_method_status status = |
| 485 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; |
| 486 | bt_value *result = NULL; |
| 487 | const bt_value *inputs_value = NULL; |
| 488 | int ret = 0; |
| 489 | guint i; |
| 490 | |
| 491 | BT_ASSERT(params); |
| 492 | |
| 493 | if (!bt_value_is_map(params)) { |
| 494 | BT_LOGE("Query parameters is not a map value object."); |
| 495 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
| 496 | goto error; |
| 497 | } |
| 498 | |
| 499 | ctf_fs = ctf_fs_component_create(log_level, NULL); |
| 500 | if (!ctf_fs) { |
| 501 | goto error; |
| 502 | } |
| 503 | |
| 504 | if (!read_src_fs_parameters(params, &inputs_value, ctf_fs)) { |
| 505 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
| 506 | goto error; |
| 507 | } |
| 508 | |
| 509 | if (ctf_fs_component_create_ctf_fs_traces(NULL, ctf_fs, inputs_value)) { |
| 510 | goto error; |
| 511 | } |
| 512 | |
| 513 | result = bt_value_array_create(); |
| 514 | if (!result) { |
| 515 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
| 516 | goto error; |
| 517 | } |
| 518 | |
| 519 | for (i = 0; i < ctf_fs->traces->len; i++) { |
| 520 | struct ctf_fs_trace *trace; |
| 521 | bt_value *trace_info; |
| 522 | bt_value_array_append_element_status append_status; |
| 523 | |
| 524 | trace = g_ptr_array_index(ctf_fs->traces, i); |
| 525 | BT_ASSERT(trace); |
| 526 | |
| 527 | trace_info = bt_value_map_create(); |
| 528 | if (!trace_info) { |
| 529 | BT_LOGE("Failed to create trace info map."); |
| 530 | goto error; |
| 531 | } |
| 532 | |
| 533 | ret = populate_trace_info(trace, trace_info); |
| 534 | if (ret) { |
| 535 | bt_value_put_ref(trace_info); |
| 536 | goto error; |
| 537 | } |
| 538 | |
| 539 | append_status = bt_value_array_append_element(result, |
| 540 | trace_info); |
| 541 | bt_value_put_ref(trace_info); |
| 542 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { |
| 543 | goto error; |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | goto end; |
| 548 | |
| 549 | error: |
| 550 | BT_VALUE_PUT_REF_AND_RESET(result); |
| 551 | result = NULL; |
| 552 | |
| 553 | if (status >= 0) { |
| 554 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
| 555 | } |
| 556 | |
| 557 | end: |
| 558 | if (ctf_fs) { |
| 559 | ctf_fs_destroy(ctf_fs); |
| 560 | ctf_fs = NULL; |
| 561 | } |
| 562 | |
| 563 | *user_result = result; |
| 564 | return status; |
| 565 | } |
| 566 | |
| 567 | BT_HIDDEN |
| 568 | bt_component_class_query_method_status support_info_query( |
| 569 | bt_self_component_class_source *comp_class, |
| 570 | const bt_value *params, bt_logging_level log_level, |
| 571 | const bt_value **user_result) |
| 572 | { |
| 573 | const bt_value *input_type_value; |
| 574 | const char *input_type; |
| 575 | bt_component_class_query_method_status status; |
| 576 | double weight = 0; |
| 577 | gchar *metadata_path = NULL; |
| 578 | bt_value *result = NULL; |
| 579 | |
| 580 | input_type_value = bt_value_map_borrow_entry_value_const(params, "type"); |
| 581 | BT_ASSERT(input_type_value); |
| 582 | BT_ASSERT(bt_value_get_type(input_type_value) == BT_VALUE_TYPE_STRING); |
| 583 | input_type = bt_value_string_get(input_type_value); |
| 584 | |
| 585 | result = bt_value_map_create(); |
| 586 | if (!result) { |
| 587 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
| 588 | goto end; |
| 589 | } |
| 590 | |
| 591 | if (strcmp(input_type, "directory") == 0) { |
| 592 | const bt_value *input_value; |
| 593 | const char *path; |
| 594 | |
| 595 | input_value = bt_value_map_borrow_entry_value_const(params, "input"); |
| 596 | BT_ASSERT(input_value); |
| 597 | BT_ASSERT(bt_value_get_type(input_value) == BT_VALUE_TYPE_STRING); |
| 598 | path = bt_value_string_get(input_value); |
| 599 | |
| 600 | metadata_path = g_build_filename(path, CTF_FS_METADATA_FILENAME, NULL); |
| 601 | if (!metadata_path) { |
| 602 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
| 603 | goto end; |
| 604 | } |
| 605 | |
| 606 | /* |
| 607 | * If the metadata file exists in this directory, consider it to |
| 608 | * be a CTF trace. |
| 609 | */ |
| 610 | if (g_file_test(metadata_path, G_FILE_TEST_EXISTS)) { |
| 611 | weight = 0.5; |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | if (bt_value_map_insert_real_entry(result, "weight", weight) != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 616 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
| 617 | goto end; |
| 618 | } |
| 619 | |
| 620 | /* |
| 621 | * Use the arbitrary constant string "ctf" as the group, such that all |
| 622 | * found ctf traces are passed to the same instance of src.ctf.fs. |
| 623 | */ |
| 624 | if (bt_value_map_insert_string_entry(result, "group", "ctf") != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
| 625 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
| 626 | goto end; |
| 627 | } |
| 628 | |
| 629 | *user_result = result; |
| 630 | result = NULL; |
| 631 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; |
| 632 | |
| 633 | end: |
| 634 | g_free(metadata_path); |
| 635 | bt_value_put_ref(result); |
| 636 | |
| 637 | return status; |
| 638 | } |