[babeltrace.git] / lib / trace-ir / attributes.c

/*
 * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
 * Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#define BT_LOG_TAG "ATTRS"
#include <babeltrace/lib-logging-internal.h>

#include <babeltrace/object.h>
#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/value.h>
#include <babeltrace/value-const.h>
#include <babeltrace/value-internal.h>
#include <babeltrace/trace-ir/attributes-internal.h>
#include <inttypes.h>
#include <babeltrace/compat/string-internal.h>
#include <babeltrace/assert-internal.h>

#define BT_ATTR_NAME_INDEX		0
#define BT_ATTR_VALUE_INDEX		1

BT_HIDDEN
struct bt_value *bt_attributes_create(void)
{
	struct bt_value *attr_obj;

	/*
	 * Attributes: array value object of array value objects, each one
	 * containing two entries: a string value object (attributes
	 * field name), and a value object (attributes field value).
	 *
	 * Example (JSON representation):
	 *
	 *     [
	 *         ["hostname", "eeppdesk"],
	 *         ["sysname", "Linux"],
	 *         ["tracer_major", 2],
	 *         ["tracer_minor", 5]
	 *     ]
	 */
	BT_LOGD_STR("Creating attributes object.");
	attr_obj = bt_value_array_create();
	if (!attr_obj) {
		BT_LOGE_STR("Failed to create array value.");
	} else {
		BT_LOGD("Created attributes object: addr=%p",
			attr_obj);
	}

	return attr_obj;
}

BT_HIDDEN
void bt_attributes_destroy(struct bt_value *attr_obj)
{
	BT_LOGD("Destroying attributes object: addr=%p", attr_obj);
	BT_OBJECT_PUT_REF_AND_RESET(attr_obj);
}

BT_HIDDEN
int64_t bt_attributes_get_count(const struct bt_value *attr_obj)
{
	return bt_value_array_get_size(attr_obj);
}

BT_HIDDEN
const char *bt_attributes_get_field_name(const struct bt_value *attr_obj,
		uint64_t index)
{
	const char *ret = NULL;
	const struct bt_value *attr_field_obj = NULL;
	const struct bt_value *attr_field_name_obj = NULL;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		goto end;
	}

	if (index >= bt_value_array_get_size(attr_obj)) {
		BT_LOGW("Invalid parameter: index is out of bounds: "
			"index=%" PRIu64 ", count=%" PRId64,
			index, bt_value_array_get_size(attr_obj));
		goto end;
	}

	attr_field_obj = bt_value_array_borrow_element_by_index_const(
		attr_obj, index);
	if (!attr_field_obj) {
		BT_LOGE("Cannot get attributes object's array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_obj, index);
		goto end;
	}

	attr_field_name_obj =
		bt_value_array_borrow_element_by_index_const(attr_field_obj,
			BT_ATTR_NAME_INDEX);
	if (!attr_field_name_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_ATTR_NAME_INDEX);
		goto end;
	}

	ret = bt_value_string_get(attr_field_name_obj);

end:
	return ret;
}

BT_HIDDEN
struct bt_value *bt_attributes_borrow_field_value(
		struct bt_value *attr_obj, uint64_t index)
{
	struct bt_value *value_obj = NULL;
	struct bt_value *attr_field_obj = NULL;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		goto end;
	}

	if (index >= bt_value_array_get_size(attr_obj)) {
		BT_LOGW("Invalid parameter: index is out of bounds: "
			"index=%" PRIu64 ", count=%" PRId64,
			index, bt_value_array_get_size(attr_obj));
		goto end;
	}

	attr_field_obj =
		bt_value_array_borrow_element_by_index(attr_obj, index);
	if (!attr_field_obj) {
		BT_LOGE("Cannot get attributes object's array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_obj, index);
		goto end;
	}

	value_obj = bt_value_array_borrow_element_by_index(
		attr_field_obj, BT_ATTR_VALUE_INDEX);
	if (!value_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_ATTR_VALUE_INDEX);
	}

end:
	return value_obj;
}

static
struct bt_value *bt_attributes_borrow_field_by_name(
		struct bt_value *attr_obj, const char *name)
{
	uint64_t i;
	int64_t attr_size;
	struct bt_value *value_obj = NULL;
	struct bt_value *attr_field_name_obj = NULL;

	attr_size = bt_value_array_get_size(attr_obj);
	if (attr_size < 0) {
		BT_LOGE("Cannot get array value's size: value-addr=%p",
			attr_obj);
		goto error;
	}

	for (i = 0; i < attr_size; ++i) {
		const char *field_name;

		value_obj = bt_value_array_borrow_element_by_index(
			attr_obj, i);
		if (!value_obj) {
			BT_LOGE("Cannot get attributes object's array value's element by index: "
				"value-addr=%p, index=%" PRIu64, attr_obj, i);
			goto error;
		}

		attr_field_name_obj =
			bt_value_array_borrow_element_by_index(
				value_obj, BT_ATTR_NAME_INDEX);
		if (!attr_field_name_obj) {
			BT_LOGE("Cannot get attribute array value's element by index: "
				"value-addr=%p, index=%" PRIu64,
				value_obj, (int64_t) BT_ATTR_NAME_INDEX);
			goto error;
		}

		field_name = bt_value_string_get(attr_field_name_obj);

		if (!strcmp(field_name, name)) {
			break;
		}

		value_obj = NULL;
	}

	return value_obj;

error:
	value_obj = NULL;
	return value_obj;
}

BT_HIDDEN
int bt_attributes_set_field_value(struct bt_value *attr_obj,
		const char *name, struct bt_value *value_obj)
{
	int ret = 0;
	struct bt_value *attr_field_obj = NULL;

	if (!attr_obj || !name || !value_obj) {
		BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
			"attr-value-addr=%p, name-addr=%p, value-addr=%p",
			attr_obj, name, value_obj);
		ret = -1;
		goto end;
	}

	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
	if (attr_field_obj) {
		ret = bt_value_array_set_element_by_index(
			attr_field_obj, BT_ATTR_VALUE_INDEX,
			value_obj);
		attr_field_obj = NULL;
		goto end;
	}

	attr_field_obj = bt_value_array_create();
	if (!attr_field_obj) {
		BT_LOGE_STR("Failed to create empty array value.");
		ret = -1;
		goto end;
	}

	ret = bt_value_array_append_string_element(attr_field_obj,
		name);
	ret |= bt_value_array_append_element(attr_field_obj,
		value_obj);
	if (ret) {
		BT_LOGE("Cannot append elements to array value: addr=%p",
			attr_field_obj);
		goto end;
	}

	ret = bt_value_array_append_element(attr_obj,
		attr_field_obj);
	if (ret) {
		BT_LOGE("Cannot append element to array value: "
			"array-value-addr=%p, element-value-addr=%p",
			attr_obj, attr_field_obj);
	}

end:
	bt_object_put_ref(attr_field_obj);
	return ret;
}

BT_HIDDEN
struct bt_value *bt_attributes_borrow_field_value_by_name(
		struct bt_value *attr_obj, const char *name)
{
	struct bt_value *value_obj = NULL;
	struct bt_value *attr_field_obj = NULL;

	if (!attr_obj || !name) {
		BT_LOGW("Invalid parameter: attributes object or name is NULL: "
			"value-addr=%p, name-addr=%p", attr_obj, name);
		goto end;
	}

	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
	if (!attr_field_obj) {
		BT_LOGD("Cannot find attributes object's field by name: "
			"value-addr=%p, name=\"%s\"", attr_obj, name);
		goto end;
	}

	value_obj = bt_value_array_borrow_element_by_index(
		attr_field_obj, BT_ATTR_VALUE_INDEX);
	if (!value_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_ATTR_VALUE_INDEX);
	}

end:
	return value_obj;
}

BT_HIDDEN
int bt_attributes_freeze(const struct bt_value *attr_obj)
{
	uint64_t i;
	int64_t count;
	int ret = 0;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		ret = -1;
		goto end;
	}

	BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj);
	count = bt_value_array_get_size(attr_obj);
	BT_ASSERT(count >= 0);

	/*
	 * We do not freeze the array value object itself here, since
	 * internal stuff could need to modify/add attributes. Each
	 * attribute is frozen one by one.
	 */
	for (i = 0; i < count; ++i) {
		struct bt_value *obj = NULL;

		obj = bt_attributes_borrow_field_value(
			(void *) attr_obj, i);
		if (!obj) {
			BT_LOGE("Cannot get attributes object's field value by index: "
				"value-addr=%p, index=%" PRIu64,
				attr_obj, i);
			ret = -1;
			goto end;
		}

		bt_value_freeze(obj);
	}

end:
	return ret;
}
Commit	Line	Data
44e0a4f5	1	/*
44e0a4f5 JG	2	* Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
	3	* Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com>
	4	*
	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:
	11	*
	12	* The above copyright notice and this permission notice shall be included in
	13	* all copies or substantial portions of the Software.
	14	*
	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
	21	* SOFTWARE.
	22	*/
	23
0f5e83e5	24	#define BT_LOG_TAG "ATTRS"
40547d22	25	#include <babeltrace/lib-logging-internal.h>
0f5e83e5	26
65300d60	27	#include <babeltrace/object.h>
44e0a4f5	28	#include <babeltrace/babeltrace-internal.h>
c6bd8523 PP	29	#include <babeltrace/value.h>
	30	#include <babeltrace/value-const.h>
	31	#include <babeltrace/value-internal.h>
05e21286	32	#include <babeltrace/trace-ir/attributes-internal.h>
561ad8c1	33	#include <inttypes.h>
ee389f01	34	#include <babeltrace/compat/string-internal.h>
f6ccaed9	35	#include <babeltrace/assert-internal.h>
44e0a4f5	36
50842bdc PP	37	#define BT_ATTR_NAME_INDEX 0
50842bdc PP	38	#define BT_ATTR_VALUE_INDEX 1
44e0a4f5 JG	39
44e0a4f5 JG	40	BT_HIDDEN
05e21286	41	struct bt_value *bt_attributes_create(void)
44e0a4f5	42	{
05e21286	43	struct bt_value *attr_obj;
561ad8c1	44
44e0a4f5	45	/*
dac5c838 PP	46	* Attributes: array value object of array value objects, each one
	47	* containing two entries: a string value object (attributes
	48	* field name), and a value object (attributes field value).
44e0a4f5 JG	49	*
	50	* Example (JSON representation):
	51	*
	52	* [
	53	* ["hostname", "eeppdesk"],
	54	* ["sysname", "Linux"],
	55	* ["tracer_major", 2],
	56	* ["tracer_minor", 5]
	57	* ]
	58	*/
561ad8c1	59	BT_LOGD_STR("Creating attributes object.");
05e21286	60	attr_obj = bt_value_array_create();
561ad8c1 PP	61	if (!attr_obj) {
	62	BT_LOGE_STR("Failed to create array value.");
	63	} else {
	64	BT_LOGD("Created attributes object: addr=%p",
	65	attr_obj);
	66	}
	67
	68	return attr_obj;
44e0a4f5 JG	69	}
	70
	71	BT_HIDDEN
05e21286	72	void bt_attributes_destroy(struct bt_value *attr_obj)
44e0a4f5	73	{
561ad8c1	74	BT_LOGD("Destroying attributes object: addr=%p", attr_obj);
238b7404	75	BT_OBJECT_PUT_REF_AND_RESET(attr_obj);
44e0a4f5 JG	76	}
	77
	78	BT_HIDDEN
05e21286	79	int64_t bt_attributes_get_count(const struct bt_value *attr_obj)
44e0a4f5	80	{
05e21286	81	return bt_value_array_get_size(attr_obj);
44e0a4f5 JG	82	}
	83
	84	BT_HIDDEN
05e21286	85	const char bt_attributes_get_field_name(const struct bt_value attr_obj,
dcf0cc71	86	uint64_t index)
44e0a4f5	87	{
44e0a4f5	88	const char *ret = NULL;
05e21286 PP	89	const struct bt_value *attr_field_obj = NULL;
05e21286 PP	90	const struct bt_value *attr_field_name_obj = NULL;
44e0a4f5	91
561ad8c1 PP	92	if (!attr_obj) {
561ad8c1 PP	93	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
44e0a4f5 JG	94	goto end;
	95	}
	96
05e21286	97	if (index >= bt_value_array_get_size(attr_obj)) {
f6ccaed9 PP	98	BT_LOGW("Invalid parameter: index is out of bounds: "
f6ccaed9 PP	99	"index=%" PRIu64 ", count=%" PRId64,
05e21286	100	index, bt_value_array_get_size(attr_obj));
f6ccaed9 PP	101	goto end;
	102	}
	103
05e21286	104	attr_field_obj = bt_value_array_borrow_element_by_index_const(
da91b29a	105	attr_obj, index);
44e0a4f5	106	if (!attr_field_obj) {
561ad8c1 PP	107	BT_LOGE("Cannot get attributes object's array value's element by index: "
561ad8c1 PP	108	"value-addr=%p, index=%" PRIu64, attr_obj, index);
44e0a4f5 JG	109	goto end;
	110	}
	111
da91b29a	112	attr_field_name_obj =
05e21286	113	bt_value_array_borrow_element_by_index_const(attr_field_obj,
da91b29a	114	BT_ATTR_NAME_INDEX);
44e0a4f5	115	if (!attr_field_name_obj) {
561ad8c1 PP	116	BT_LOGE("Cannot get attribute array value's element by index: "
561ad8c1 PP	117	"value-addr=%p, index=%" PRIu64, attr_field_obj,
50842bdc	118	(uint64_t) BT_ATTR_NAME_INDEX);
44e0a4f5 JG	119	goto end;
	120	}
	121
05e21286	122	ret = bt_value_string_get(attr_field_name_obj);
44e0a4f5 JG	123
44e0a4f5 JG	124	end:
44e0a4f5 JG	125	return ret;
	126	}
	127
	128	BT_HIDDEN
05e21286 PP	129	struct bt_value *bt_attributes_borrow_field_value(
05e21286 PP	130	struct bt_value *attr_obj, uint64_t index)
44e0a4f5	131	{
05e21286 PP	132	struct bt_value *value_obj = NULL;
05e21286 PP	133	struct bt_value *attr_field_obj = NULL;
44e0a4f5	134
561ad8c1 PP	135	if (!attr_obj) {
561ad8c1 PP	136	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
44e0a4f5 JG	137	goto end;
	138	}
	139
05e21286	140	if (index >= bt_value_array_get_size(attr_obj)) {
f6ccaed9 PP	141	BT_LOGW("Invalid parameter: index is out of bounds: "
f6ccaed9 PP	142	"index=%" PRIu64 ", count=%" PRId64,
05e21286	143	index, bt_value_array_get_size(attr_obj));
f6ccaed9 PP	144	goto end;
	145	}
	146
da91b29a	147	attr_field_obj =
05e21286	148	bt_value_array_borrow_element_by_index(attr_obj, index);
44e0a4f5	149	if (!attr_field_obj) {
561ad8c1 PP	150	BT_LOGE("Cannot get attributes object's array value's element by index: "
561ad8c1 PP	151	"value-addr=%p, index=%" PRIu64, attr_obj, index);
44e0a4f5 JG	152	goto end;
	153	}
	154
05e21286	155	value_obj = bt_value_array_borrow_element_by_index(
da91b29a	156	attr_field_obj, BT_ATTR_VALUE_INDEX);
561ad8c1 PP	157	if (!value_obj) {
	158	BT_LOGE("Cannot get attribute array value's element by index: "
	159	"value-addr=%p, index=%" PRIu64, attr_field_obj,
50842bdc	160	(uint64_t) BT_ATTR_VALUE_INDEX);
561ad8c1	161	}
44e0a4f5 JG	162
44e0a4f5 JG	163	end:
44e0a4f5 JG	164	return value_obj;
	165	}
	166
	167	static
05e21286 PP	168	struct bt_value *bt_attributes_borrow_field_by_name(
05e21286 PP	169	struct bt_value attr_obj, const char name)
44e0a4f5	170	{
dcf0cc71 PP	171	uint64_t i;
dcf0cc71 PP	172	int64_t attr_size;
05e21286 PP	173	struct bt_value *value_obj = NULL;
05e21286 PP	174	struct bt_value *attr_field_name_obj = NULL;
44e0a4f5	175
05e21286	176	attr_size = bt_value_array_get_size(attr_obj);
44e0a4f5	177	if (attr_size < 0) {
561ad8c1 PP	178	BT_LOGE("Cannot get array value's size: value-addr=%p",
561ad8c1 PP	179	attr_obj);
44e0a4f5 JG	180	goto error;
	181	}
	182
	183	for (i = 0; i < attr_size; ++i) {
44e0a4f5 JG	184	const char *field_name;
44e0a4f5 JG	185
05e21286	186	value_obj = bt_value_array_borrow_element_by_index(
da91b29a	187	attr_obj, i);
44e0a4f5	188	if (!value_obj) {
561ad8c1 PP	189	BT_LOGE("Cannot get attributes object's array value's element by index: "
561ad8c1 PP	190	"value-addr=%p, index=%" PRIu64, attr_obj, i);
44e0a4f5 JG	191	goto error;
	192	}
	193
da91b29a	194	attr_field_name_obj =
05e21286	195	bt_value_array_borrow_element_by_index(
da91b29a	196	value_obj, BT_ATTR_NAME_INDEX);
44e0a4f5	197	if (!attr_field_name_obj) {
561ad8c1 PP	198	BT_LOGE("Cannot get attribute array value's element by index: "
561ad8c1 PP	199	"value-addr=%p, index=%" PRIu64,
094ff7c0	200	value_obj, (int64_t) BT_ATTR_NAME_INDEX);
44e0a4f5 JG	201	goto error;
	202	}
	203
05e21286	204	field_name = bt_value_string_get(attr_field_name_obj);
44e0a4f5 JG	205
44e0a4f5 JG	206	if (!strcmp(field_name, name)) {
44e0a4f5 JG	207	break;
	208	}
	209
094ff7c0	210	value_obj = NULL;
44e0a4f5 JG	211	}
	212
	213	return value_obj;
	214
	215	error:
094ff7c0	216	value_obj = NULL;
44e0a4f5 JG	217	return value_obj;
	218	}
	219
	220	BT_HIDDEN
05e21286 PP	221	int bt_attributes_set_field_value(struct bt_value *attr_obj,
05e21286 PP	222	const char name, struct bt_value value_obj)
44e0a4f5 JG	223	{
44e0a4f5 JG	224	int ret = 0;
05e21286	225	struct bt_value *attr_field_obj = NULL;
44e0a4f5 JG	226
44e0a4f5 JG	227	if (!attr_obj \|\| !name \|\| !value_obj) {
561ad8c1 PP	228	BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
	229	"attr-value-addr=%p, name-addr=%p, value-addr=%p",
	230	attr_obj, name, value_obj);
44e0a4f5 JG	231	ret = -1;
	232	goto end;
	233	}
	234
094ff7c0	235	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
44e0a4f5	236	if (attr_field_obj) {
05e21286	237	ret = bt_value_array_set_element_by_index(
da91b29a	238	attr_field_obj, BT_ATTR_VALUE_INDEX,
05e21286	239	value_obj);
094ff7c0	240	attr_field_obj = NULL;
44e0a4f5 JG	241	goto end;
	242	}
	243
05e21286	244	attr_field_obj = bt_value_array_create();
44e0a4f5	245	if (!attr_field_obj) {
561ad8c1	246	BT_LOGE_STR("Failed to create empty array value.");
44e0a4f5 JG	247	ret = -1;
	248	goto end;
	249	}
	250
05e21286	251	ret = bt_value_array_append_string_element(attr_field_obj,
da91b29a	252	name);
05e21286 PP	253	ret \|= bt_value_array_append_element(attr_field_obj,
05e21286 PP	254	value_obj);
44e0a4f5	255	if (ret) {
561ad8c1 PP	256	BT_LOGE("Cannot append elements to array value: addr=%p",
561ad8c1 PP	257	attr_field_obj);
44e0a4f5 JG	258	goto end;
	259	}
	260
05e21286 PP	261	ret = bt_value_array_append_element(attr_obj,
05e21286 PP	262	attr_field_obj);
561ad8c1 PP	263	if (ret) {
	264	BT_LOGE("Cannot append element to array value: "
	265	"array-value-addr=%p, element-value-addr=%p",
	266	attr_obj, attr_field_obj);
	267	}
44e0a4f5 JG	268
44e0a4f5 JG	269	end:
65300d60	270	bt_object_put_ref(attr_field_obj);
44e0a4f5 JG	271	return ret;
	272	}
	273
	274	BT_HIDDEN
05e21286 PP	275	struct bt_value *bt_attributes_borrow_field_value_by_name(
05e21286 PP	276	struct bt_value attr_obj, const char name)
44e0a4f5	277	{
05e21286 PP	278	struct bt_value *value_obj = NULL;
05e21286 PP	279	struct bt_value *attr_field_obj = NULL;
44e0a4f5 JG	280
44e0a4f5 JG	281	if (!attr_obj \|\| !name) {
561ad8c1 PP	282	BT_LOGW("Invalid parameter: attributes object or name is NULL: "
561ad8c1 PP	283	"value-addr=%p, name-addr=%p", attr_obj, name);
44e0a4f5 JG	284	goto end;
	285	}
	286
094ff7c0	287	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
44e0a4f5	288	if (!attr_field_obj) {
561ad8c1 PP	289	BT_LOGD("Cannot find attributes object's field by name: "
561ad8c1 PP	290	"value-addr=%p, name=\"%s\"", attr_obj, name);
44e0a4f5 JG	291	goto end;
	292	}
	293
05e21286	294	value_obj = bt_value_array_borrow_element_by_index(
da91b29a	295	attr_field_obj, BT_ATTR_VALUE_INDEX);
561ad8c1 PP	296	if (!value_obj) {
	297	BT_LOGE("Cannot get attribute array value's element by index: "
	298	"value-addr=%p, index=%" PRIu64, attr_field_obj,
50842bdc	299	(uint64_t) BT_ATTR_VALUE_INDEX);
561ad8c1	300	}
44e0a4f5 JG	301
44e0a4f5 JG	302	end:
44e0a4f5 JG	303	return value_obj;
	304	}
	305
	306	BT_HIDDEN
05e21286	307	int bt_attributes_freeze(const struct bt_value *attr_obj)
44e0a4f5	308	{
dcf0cc71 PP	309	uint64_t i;
dcf0cc71 PP	310	int64_t count;
44e0a4f5 JG	311	int ret = 0;
	312
	313	if (!attr_obj) {
561ad8c1	314	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
44e0a4f5 JG	315	ret = -1;
	316	goto end;
	317	}
	318
561ad8c1	319	BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj);
05e21286	320	count = bt_value_array_get_size(attr_obj);
f6ccaed9	321	BT_ASSERT(count >= 0);
44e0a4f5 JG	322
44e0a4f5 JG	323	/*
dac5c838 PP	324	* We do not freeze the array value object itself here, since
	325	* internal stuff could need to modify/add attributes. Each
	326	* attribute is frozen one by one.
44e0a4f5 JG	327	*/
44e0a4f5 JG	328	for (i = 0; i < count; ++i) {
05e21286	329	struct bt_value *obj = NULL;
44e0a4f5	330
05e21286 PP	331	obj = bt_attributes_borrow_field_value(
05e21286 PP	332	(void *) attr_obj, i);
44e0a4f5	333	if (!obj) {
561ad8c1 PP	334	BT_LOGE("Cannot get attributes object's field value by index: "
	335	"value-addr=%p, index=%" PRIu64,
	336	attr_obj, i);
44e0a4f5 JG	337	ret = -1;
	338	goto end;
	339	}
	340
05e21286	341	bt_value_freeze(obj);
44e0a4f5 JG	342	}
	343
	344	end:
44e0a4f5 JG	345	return ret;
44e0a4f5 JG	346	}