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

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

#include <lttng/condition/condition-internal.hpp>
#include <lttng/condition/evaluation-internal.hpp>
#include <lttng/condition/buffer-usage-internal.hpp>
#include <lttng/condition/session-consumed-size-internal.hpp>
#include <lttng/condition/session-rotation-internal.hpp>
#include <lttng/condition/event-rule-matches-internal.hpp>
#include <common/macros.hpp>
#include <common/error.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;
	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_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 <lttng/condition/condition-internal.hpp>
	9	#include <lttng/condition/evaluation-internal.hpp>
	10	#include <lttng/condition/buffer-usage-internal.hpp>
	11	#include <lttng/condition/session-consumed-size-internal.hpp>
	12	#include <lttng/condition/session-rotation-internal.hpp>
	13	#include <lttng/condition/event-rule-matches-internal.hpp>
	14	#include <common/macros.hpp>
	15	#include <common/error.hpp>
	16	#include <stdbool.h>
	17
	18	void lttng_evaluation_init(struct lttng_evaluation *evaluation,
	19	enum lttng_condition_type type)
	20	{
	21	evaluation->type = type;
	22	}
	23
	24	int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
	25	struct lttng_payload *payload)
	26	{
	27	int ret;
	28	struct lttng_evaluation_comm evaluation_comm;
	29
	30	evaluation_comm.type = (int8_t) evaluation->type;
	31
	32	ret = lttng_dynamic_buffer_append(&payload->buffer, &evaluation_comm,
	33	sizeof(evaluation_comm));
	34	if (ret) {
	35	goto end;
	36	}
	37
	38	if (evaluation->serialize) {
	39	ret = evaluation->serialize(evaluation, payload);
	40	if (ret) {
	41	goto end;
	42	}
	43	}
	44	end:
	45	return ret;
	46	}
	47
	48	ssize_t lttng_evaluation_create_from_payload(
	49	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	struct lttng_payload_view evaluation_comm_view =
	56	lttng_payload_view_from_view(
	57	src_view, 0, sizeof(*evaluation_comm));
	58	struct lttng_payload_view evaluation_view =
	59	lttng_payload_view_from_view(src_view,
	60	sizeof(*evaluation_comm), -1);
	61
	62	if (!src_view \|\| !evaluation) {
	63	ret = -1;
	64	goto end;
	65	}
	66
	67	if (!lttng_payload_view_is_valid(&evaluation_comm_view)) {
	68	ret = -1;
	69	goto end;
	70	}
	71
	72	evaluation_comm = (typeof(evaluation_comm)) evaluation_comm_view.buffer.data;
	73	evaluation_size += sizeof(*evaluation_comm);
	74
	75	switch ((enum lttng_condition_type) evaluation_comm->type) {
	76	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	77	ret = lttng_evaluation_buffer_usage_low_create_from_payload(
	78	&evaluation_view, evaluation);
	79	if (ret < 0) {
	80	goto end;
	81	}
	82	evaluation_size += ret;
	83	break;
	84	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	85	ret = lttng_evaluation_buffer_usage_high_create_from_payload(
	86	&evaluation_view, evaluation);
	87	if (ret < 0) {
	88	goto end;
	89	}
	90	evaluation_size += ret;
	91	break;
	92	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
	93	ret = lttng_evaluation_session_consumed_size_create_from_payload(
	94	&evaluation_view, evaluation);
	95	if (ret < 0) {
	96	goto end;
	97	}
	98	evaluation_size += ret;
	99	break;
	100	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
	101	ret = lttng_evaluation_session_rotation_ongoing_create_from_payload(
	102	&evaluation_view, evaluation);
	103	if (ret < 0) {
	104	goto end;
	105	}
	106	evaluation_size += ret;
	107	break;
	108	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
	109	ret = lttng_evaluation_session_rotation_completed_create_from_payload(
	110	&evaluation_view, evaluation);
	111	if (ret < 0) {
	112	goto end;
	113	}
	114	evaluation_size += ret;
	115	break;
	116	case LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES:
	117	LTTNG_ASSERT(condition);
	118	LTTNG_ASSERT(condition->type ==
	119	LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES);
	120	ret = lttng_evaluation_event_rule_matches_create_from_payload(
	121	lttng::utils::container_of(condition,
	122	&lttng_condition_event_rule_matches::parent),
	123	&evaluation_view, evaluation);
	124	if (ret < 0) {
	125	goto end;
	126	}
	127	evaluation_size += ret;
	128	break;
	129	default:
	130	ERR("Attempted to create evaluation of unknown type (%i)",
	131	(int) evaluation_comm->type);
	132	ret = -1;
	133	goto end;
	134	}
	135
	136	ret = evaluation_size;
	137	end:
	138	return ret;
	139	}
	140
	141	enum lttng_condition_type lttng_evaluation_get_type(
	142	const struct lttng_evaluation *evaluation)
	143	{
	144	return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
	145	}
	146
	147	void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
	148	{
	149	if (!evaluation) {
	150	return;
	151	}
	152
	153	LTTNG_ASSERT(evaluation->destroy);
	154	evaluation->destroy(evaluation);
	155	}