[lttng-tools.git] / src / common / evaluation.c

/*
 * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#include <lttng/condition/condition-internal.h>
#include <lttng/condition/evaluation-internal.h>
#include <lttng/condition/buffer-usage-internal.h>
#include <lttng/condition/session-consumed-size-internal.h>
#include <lttng/condition/session-rotation-internal.h>
#include <lttng/condition/event-rule-internal.h>
#include <common/macros.h>
#include <common/error.h>
#include <stdbool.h>
#include <assert.h>

LTTNG_HIDDEN
void lttng_evaluation_init(struct lttng_evaluation *evaluation,
		enum lttng_condition_type type)
{
	evaluation->type = type;
}

LTTNG_HIDDEN
int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
		struct lttng_payload *payload)
{
	int ret;
	struct lttng_evaluation_comm evaluation_comm = {
		.type = (int8_t) evaluation->type
	};

	ret = lttng_dynamic_buffer_append(&payload->buffer, &evaluation_comm,
			sizeof(evaluation_comm));
	if (ret) {
		goto end;
	}

	if (evaluation->serialize) {
		ret = evaluation->serialize(evaluation, payload);
		if (ret) {
			goto end;
		}
	}
end:
	return ret;
}

LTTNG_HIDDEN
ssize_t lttng_evaluation_create_from_payload(
		const struct lttng_condition *condition,
		struct lttng_payload_view *src_view,
		struct lttng_evaluation **evaluation)
{
	ssize_t ret, evaluation_size = 0;
	const struct lttng_evaluation_comm *evaluation_comm;
	struct lttng_payload_view evaluation_comm_view =
			lttng_payload_view_from_view(
					src_view, 0, sizeof(*evaluation_comm));
	struct lttng_payload_view evaluation_view =
			lttng_payload_view_from_view(src_view,
					sizeof(*evaluation_comm), -1);

	if (!src_view || !evaluation) {
		ret = -1;
		goto end;
	}

	if (!lttng_payload_view_is_valid(&evaluation_comm_view)) {
		ret = -1;
		goto end;
	}

	evaluation_comm = (typeof(evaluation_comm)) evaluation_comm_view.buffer.data;
	evaluation_size += sizeof(*evaluation_comm);

	switch ((enum lttng_condition_type) evaluation_comm->type) {
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
		ret = lttng_evaluation_buffer_usage_low_create_from_payload(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
		ret = lttng_evaluation_buffer_usage_high_create_from_payload(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
		ret = lttng_evaluation_session_consumed_size_create_from_payload(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
		ret = lttng_evaluation_session_rotation_ongoing_create_from_payload(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
		ret = lttng_evaluation_session_rotation_completed_create_from_payload(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
		assert(condition);
		assert(condition->type == LTTNG_CONDITION_TYPE_EVENT_RULE_HIT);
		ret = lttng_evaluation_event_rule_create_from_payload(
				container_of(condition,
						const struct lttng_condition_event_rule,
						parent),
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	default:
		ERR("Attempted to create evaluation of unknown type (%i)",
				(int) evaluation_comm->type);
		ret = -1;
		goto end;
	}

	ret = evaluation_size;
end:
	return ret;
}

enum lttng_condition_type lttng_evaluation_get_type(
		const struct lttng_evaluation *evaluation)
{
	return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
}

void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
{
	if (!evaluation) {
		return;
	}

	assert(evaluation->destroy);
	evaluation->destroy(evaluation);
}
Commit	Line	Data
a58c490f	1	/*
ab5be9fa	2	* Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
a58c490f	3	*
ab5be9fa	4	* SPDX-License-Identifier: LGPL-2.1-only
a58c490f	5	*
a58c490f JG	6	*/
a58c490f JG	7
7c920b63	8	#include <lttng/condition/condition-internal.h>
a58c490f JG	9	#include <lttng/condition/evaluation-internal.h>
a58c490f JG	10	#include <lttng/condition/buffer-usage-internal.h>
e8360425	11	#include <lttng/condition/session-consumed-size-internal.h>
c19092cd	12	#include <lttng/condition/session-rotation-internal.h>
f1446131	13	#include <lttng/condition/event-rule-internal.h>
a58c490f JG	14	#include <common/macros.h>
	15	#include <common/error.h>
	16	#include <stdbool.h>
	17	#include <assert.h>
	18
c19092cd JG	19	LTTNG_HIDDEN
	20	void lttng_evaluation_init(struct lttng_evaluation *evaluation,
	21	enum lttng_condition_type type)
	22	{
	23	evaluation->type = type;
	24	}
	25
a58c490f	26	LTTNG_HIDDEN
9b63a4aa	27	int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
c0a66c84	28	struct lttng_payload *payload)
a58c490f	29	{
3647288f	30	int ret;
db315d75 JG	31	struct lttng_evaluation_comm evaluation_comm = {
	32	.type = (int8_t) evaluation->type
	33	};
a58c490f	34
c0a66c84	35	ret = lttng_dynamic_buffer_append(&payload->buffer, &evaluation_comm,
3647288f JG	36	sizeof(evaluation_comm));
	37	if (ret) {
	38	goto end;
a58c490f	39	}
a58c490f JG	40
a58c490f JG	41	if (evaluation->serialize) {
c0a66c84	42	ret = evaluation->serialize(evaluation, payload);
3647288f	43	if (ret) {
a58c490f JG	44	goto end;
a58c490f JG	45	}
a58c490f	46	}
a58c490f JG	47	end:
	48	return ret;
	49	}
	50
	51	LTTNG_HIDDEN
c0a66c84	52	ssize_t lttng_evaluation_create_from_payload(
7c920b63	53	const struct lttng_condition *condition,
c0a66c84	54	struct lttng_payload_view *src_view,
a58c490f JG	55	struct lttng_evaluation **evaluation)
	56	{
	57	ssize_t ret, evaluation_size = 0;
	58	const struct lttng_evaluation_comm *evaluation_comm;
3e6e0df2 JG	59	struct lttng_payload_view evaluation_comm_view =
	60	lttng_payload_view_from_view(
	61	src_view, 0, sizeof(*evaluation_comm));
	62	struct lttng_payload_view evaluation_view =
2f571d6f	63	lttng_payload_view_from_view(src_view,
3e6e0df2	64	sizeof(*evaluation_comm), -1);
a58c490f JG	65
	66	if (!src_view \|\| !evaluation) {
	67	ret = -1;
	68	goto end;
	69	}
	70
3e6e0df2 JG	71	if (!lttng_payload_view_is_valid(&evaluation_comm_view)) {
	72	ret = -1;
	73	goto end;
	74	}
	75
	76	evaluation_comm = (typeof(evaluation_comm)) evaluation_comm_view.buffer.data;
a58c490f JG	77	evaluation_size += sizeof(*evaluation_comm);
	78
	79	switch ((enum lttng_condition_type) evaluation_comm->type) {
	80	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
c0a66c84	81	ret = lttng_evaluation_buffer_usage_low_create_from_payload(
a58c490f JG	82	&evaluation_view, evaluation);
	83	if (ret < 0) {
	84	goto end;
	85	}
	86	evaluation_size += ret;
	87	break;
	88	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
c0a66c84	89	ret = lttng_evaluation_buffer_usage_high_create_from_payload(
a58c490f JG	90	&evaluation_view, evaluation);
	91	if (ret < 0) {
	92	goto end;
	93	}
	94	evaluation_size += ret;
	95	break;
e8360425	96	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
c0a66c84	97	ret = lttng_evaluation_session_consumed_size_create_from_payload(
e8360425 JD	98	&evaluation_view, evaluation);
	99	if (ret < 0) {
	100	goto end;
	101	}
	102	evaluation_size += ret;
	103	break;
c19092cd	104	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
c0a66c84	105	ret = lttng_evaluation_session_rotation_ongoing_create_from_payload(
c19092cd JG	106	&evaluation_view, evaluation);
	107	if (ret < 0) {
	108	goto end;
	109	}
	110	evaluation_size += ret;
	111	break;
	112	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
c0a66c84	113	ret = lttng_evaluation_session_rotation_completed_create_from_payload(
c19092cd JG	114	&evaluation_view, evaluation);
	115	if (ret < 0) {
	116	goto end;
	117	}
	118	evaluation_size += ret;
	119	break;
f1446131	120	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
7c920b63 PP	121	assert(condition);
	122	assert(condition->type == LTTNG_CONDITION_TYPE_EVENT_RULE_HIT);
	123	ret = lttng_evaluation_event_rule_create_from_payload(
	124	container_of(condition,
	125	const struct lttng_condition_event_rule,
	126	parent),
	127	&evaluation_view, evaluation);
f1446131 JR	128	if (ret < 0) {
	129	goto end;
	130	}
	131	evaluation_size += ret;
	132	break;
a58c490f JG	133	default:
	134	ERR("Attempted to create evaluation of unknown type (%i)",
	135	(int) evaluation_comm->type);
	136	ret = -1;
	137	goto end;
	138	}
c0a66c84	139
a58c490f JG	140	ret = evaluation_size;
	141	end:
	142	return ret;
	143	}
	144
	145	enum lttng_condition_type lttng_evaluation_get_type(
	146	const struct lttng_evaluation *evaluation)
	147	{
	148	return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
	149	}
	150
	151	void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
	152	{
	153	if (!evaluation) {
	154	return;
	155	}
	156
	157	assert(evaluation->destroy);
	158	evaluation->destroy(evaluation);
	159	}