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

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

#include <common/error.hpp>
#include <common/macros.hpp>

#include <lttng/condition/buffer-usage-internal.hpp>
#include <lttng/condition/condition-internal.hpp>
#include <lttng/condition/evaluation-internal.hpp>
#include <lttng/condition/event-rule-matches-internal.hpp>
#include <lttng/condition/session-consumed-size-internal.hpp>
#include <lttng/condition/session-rotation-internal.hpp>

#include <stdbool.h>

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

int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
			       struct lttng_payload *payload)
{
	int ret;
	struct lttng_evaluation_comm 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;
}

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;
	const 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_MATCHES:
		LTTNG_ASSERT(condition);
		LTTNG_ASSERT(condition->type == LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES);
		ret = lttng_evaluation_event_rule_matches_create_from_payload(
			lttng::utils::container_of(condition,
						   &lttng_condition_event_rule_matches::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;
	}

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