[lttng-tools.git] / tests / regression / tools / notification / base_client.c

/*
 * base_client.c
 *
 * Base client application for testing of LTTng notification API
 *
 * Copyright 2017 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
 *
 * SPDX-License-Identifier: MIT
 *
 */

#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include <assert.h>

#include <lttng/action/action.h>
#include <lttng/action/group.h>
#include <lttng/action/notify.h>
#include <lttng/condition/buffer-usage.h>
#include <lttng/condition/condition.h>
#include <lttng/condition/evaluation.h>
#include <lttng/domain.h>
#include <lttng/endpoint.h>
#include <lttng/notification/channel.h>
#include <lttng/notification/notification.h>
#include <lttng/trigger/trigger.h>
#include <lttng/lttng-error.h>

static unsigned int nr_notifications = 0;
static unsigned int nr_expected_notifications = 0;
static const char *session_name = NULL;
static const char *channel_name = NULL;
static double threshold_ratio = 0.0;
static uint64_t threshold_bytes = 0;
static bool is_threshold_ratio = false;
static bool use_action_group = false;
static enum lttng_condition_type buffer_usage_type = LTTNG_CONDITION_TYPE_UNKNOWN;
static enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE;

int handle_condition(
		const struct lttng_condition *condition,
		const struct lttng_evaluation *condition_evaluation);

static
int parse_arguments(char **argv)
{
	const char *domain_type_string = NULL;
	const char *buffer_usage_type_string = NULL;
	const char *buffer_usage_threshold_type = NULL;
	const char *buffer_usage_threshold_value = NULL;
	const char *nr_expected_notifications_string = NULL;
	const char *use_action_group_value = NULL;

	session_name = argv[1];
	channel_name = argv[2];
	domain_type_string = argv[3];
	buffer_usage_type_string = argv[4];
	buffer_usage_threshold_type = argv[5];
	buffer_usage_threshold_value = argv[6];
	nr_expected_notifications_string = argv[7];
	use_action_group_value = argv[8];

	/* Parse arguments */
	/* Domain type */
	if (!strcasecmp("LTTNG_DOMAIN_UST", domain_type_string)) {
		domain_type = LTTNG_DOMAIN_UST;
	}
	if (!strcasecmp("LTTNG_DOMAIN_KERNEL", domain_type_string)) {
		domain_type = LTTNG_DOMAIN_KERNEL;
	}
	if (domain_type == LTTNG_DOMAIN_NONE) {
		printf("error: Unknown domain type\n");
		goto error;
	}

	/* Buffer usage condition type */
	if (!strcasecmp("low", buffer_usage_type_string)) {
		buffer_usage_type = LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW;
	}
	if (!strcasecmp("high", buffer_usage_type_string)) {
		buffer_usage_type = LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH;
	}
	if (buffer_usage_type == LTTNG_CONDITION_TYPE_UNKNOWN) {
		printf("error: Unknown condition type\n");
		goto error;
	}

	/* Ratio or bytes ? */
	if (!strcasecmp("bytes", buffer_usage_threshold_type)) {
		is_threshold_ratio = false;
		sscanf(buffer_usage_threshold_value, "%" SCNu64, &threshold_bytes);
	}

	if (!strcasecmp("ratio", buffer_usage_threshold_type)) {
		is_threshold_ratio = true;
		sscanf(buffer_usage_threshold_value, "%lf", &threshold_ratio);
	}

	/* Number of notification to expect */
	sscanf(nr_expected_notifications_string, "%d", &nr_expected_notifications);

	/* Put notify action in a group. */
	if (!strcasecmp("1", use_action_group_value)) {
		use_action_group = true;
	}

	return 0;
error:
	return 1;
}

int main(int argc, char **argv)
{
	int ret = 0;
	enum lttng_condition_status condition_status;
	enum lttng_action_status action_status;
	enum lttng_notification_channel_status nc_status;
	struct lttng_notification_channel *notification_channel = NULL;
	struct lttng_condition *condition = NULL;
	struct lttng_action *action = NULL;
	struct lttng_trigger *trigger = NULL;

	/*
	 * Disable buffering on stdout.
	 * Safety measure to prevent hang on the validation side since
	 * stdout is used for outside synchronization.
	 */
	setbuf(stdout, NULL);

	if (argc < 9) {
		printf("error: Missing arguments for tests\n");
		ret = 1;
		goto end;
	}

	ret = parse_arguments(argv);
	if (ret) {
		printf("error: Could not parse arguments\n");
		goto end;
	}

	/* Setup */
	notification_channel = lttng_notification_channel_create(
			lttng_session_daemon_notification_endpoint);
	if (!notification_channel) {
		printf("error: Could not create notification channel\n");
		ret = 1;
		goto end;
	}

	switch (buffer_usage_type) {
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
		condition = lttng_condition_buffer_usage_low_create();
		break;
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
		condition = lttng_condition_buffer_usage_high_create();
		break;
	default:
		printf("error: Invalid buffer_usage_type\n");
		ret = 1;
		goto end;
	}

	if (!condition) {
		printf("error: Could not create condition object\n");
		ret = 1;
		goto end;
	}

	if (is_threshold_ratio) {
		condition_status = lttng_condition_buffer_usage_set_threshold_ratio(
				condition, threshold_ratio);
	} else {
		condition_status = lttng_condition_buffer_usage_set_threshold(
				condition, threshold_bytes);
	}

	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
		printf("error: Could not set threshold\n");
		ret = 1;
		goto end;
	}

	condition_status = lttng_condition_buffer_usage_set_session_name(
			condition, session_name);
	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
		printf("error: Could not set session name\n");
		ret = 1;
		goto end;
	}
	condition_status = lttng_condition_buffer_usage_set_channel_name(
			condition, channel_name);
	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
		printf("error: Could not set channel name\n");
		ret = 1;
		goto end;
	}
	condition_status = lttng_condition_buffer_usage_set_domain_type(
			condition, domain_type);
	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
		printf("error: Could not set domain type\n");
		ret = 1;
		goto end;
	}

	if (use_action_group) {
		struct lttng_action *notify, *group;

		group = lttng_action_group_create();
		if (!group) {
			printf("error: Could not create action group\n");
			ret = 1;
			goto end;
		}

		notify = lttng_action_notify_create();
		if (!notify) {
			lttng_action_destroy(group);
			printf("error: Could not create action notify\n");
			ret = 1;
			goto end;
		}

		action_status = lttng_action_group_add_action(group, notify);
		if (action_status != LTTNG_ACTION_STATUS_OK) {
			printf("error: Could not add action notify to action group\n");
			lttng_action_destroy(group);
			lttng_action_destroy(notify);
			ret = 1;
			goto end;
		}

		action = group;
	} else {
		action = lttng_action_notify_create();
		if (!action) {
			printf("error: Could not create action notify\n");
			ret = 1;
			goto end;
		}
	}

	trigger = lttng_trigger_create(condition, action);
	if (!trigger) {
		printf("error: Could not create trigger\n");
		ret = 1;
		goto end;
	}

	ret = lttng_register_trigger(trigger);

	/*
	 * An equivalent trigger might already be registered if an other app
	 * registered an equivalent trigger.
	 */
	if (ret < 0 && ret != -LTTNG_ERR_TRIGGER_EXISTS) {
		printf("error: %s\n", lttng_strerror(ret));
		ret = 1;
		goto end;
	}

	nc_status = lttng_notification_channel_subscribe(notification_channel, condition);
	if (nc_status != LTTNG_NOTIFICATION_CHANNEL_STATUS_OK) {
		printf("error: Could not subscribe\n");
		ret = 1;
		goto end;
	}

	/* Tell outside process that the client is ready */
	printf("sync: ready\n");

	for (;;) {
		struct lttng_notification *notification;
		enum lttng_notification_channel_status status;
		const struct lttng_evaluation *notification_evaluation;
		const struct lttng_condition *notification_condition;

		if (nr_notifications == nr_expected_notifications) {
			ret = 0;
			goto end;
		}
		/* Receive the next notification. */
		status = lttng_notification_channel_get_next_notification(
				notification_channel,
				&notification);

		switch (status) {
		case LTTNG_NOTIFICATION_CHANNEL_STATUS_OK:
			break;
		case LTTNG_NOTIFICATION_CHANNEL_STATUS_NOTIFICATIONS_DROPPED:
			ret = 1;
			printf("error: No drop should be observed during this test app\n");
			goto end;
		case LTTNG_NOTIFICATION_CHANNEL_STATUS_CLOSED:
			/*
			 * The notification channel has been closed by the
			 * session daemon. This is typically caused by a session
			 * daemon shutting down (cleanly or because of a crash).
			 */
			printf("error: Notification channel was closed\n");
			ret = 1;
			goto end;
		default:
			/* Unhandled conditions / errors. */
			printf("error: Unknown notification channel status (%d) \n", status);
			ret = 1;
			goto end;
		}

		notification_condition = lttng_notification_get_condition(notification);
		notification_evaluation = lttng_notification_get_evaluation(notification);

		ret = handle_condition(notification_condition, notification_evaluation);
		nr_notifications++;

		lttng_notification_destroy(notification);
		if (ret != 0) {
			goto end;
		}
	}
end:
	if (trigger) {
		lttng_unregister_trigger(trigger);
	}
	if (lttng_notification_channel_unsubscribe(notification_channel, condition)) {
		printf("error: channel unsubscribe error\n");
	}
	lttng_trigger_destroy(trigger);
	lttng_condition_destroy(condition);
	lttng_action_destroy(action);
	lttng_notification_channel_destroy(notification_channel);
	printf("exit: %d\n", ret);
	return ret;
}

int handle_condition(
		const struct lttng_condition *condition,
		const struct lttng_evaluation *evaluation)
{
	int ret = 0;
	const char *string_low = "low";
	const char *string_high = "high";
	const char *string_condition_type = NULL;
	const char *condition_session_name = NULL;
	const char *condition_channel_name = NULL;
	enum lttng_condition_type condition_type;
	enum lttng_domain_type condition_domain_type;
	double buffer_usage_ratio;
	uint64_t buffer_usage_bytes;

	condition_type = lttng_condition_get_type(condition);

	if (condition_type != buffer_usage_type) {
		ret = 1;
		printf("error: condition type and buffer usage type are not the same\n");
		goto end;
	}

	/* Fetch info to test */
	ret = lttng_condition_buffer_usage_get_session_name(condition,
			&condition_session_name);
	if (ret) {
		printf("error: session name could not be fetched\n");
		ret = 1;
		goto end;
	}
	ret = lttng_condition_buffer_usage_get_channel_name(condition,
			&condition_channel_name);
	if (ret) {
		printf("error: channel name could not be fetched\n");
		ret = 1;
		goto end;
	}
	ret = lttng_condition_buffer_usage_get_domain_type(condition,
			&condition_domain_type);
	if (ret) {
		printf("error: domain type could not be fetched\n");
		ret = 1;
		goto end;
	}

	if (strcmp(condition_session_name, session_name) != 0) {
		printf("error: session name differs\n");
		ret = 1;
		goto end;
	}

	if (strcmp(condition_channel_name, channel_name) != 0) {
		printf("error: channel name differs\n");
		ret = 1;
		goto end;
	}

	if (condition_domain_type != domain_type) {
		printf("error: domain type differs\n");
		ret = 1;
		goto end;
	}

	if (is_threshold_ratio) {
		lttng_evaluation_buffer_usage_get_usage_ratio(
				evaluation, &buffer_usage_ratio);
		switch (condition_type) {
		case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
			if (buffer_usage_ratio > threshold_ratio) {
				printf("error: buffer usage ratio is bigger than set threshold ratio\n");
				ret = 1;
				goto end;
			}
			break;
		case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
			if (buffer_usage_ratio < threshold_ratio) {
				printf("error: buffer usage ratio is lower than set threshold ratio\n");
				ret = 1;
				goto end;
			}
			break;
		default:
			printf("error: Unknown condition type\n");
			ret = 1;
			goto end;
		}
	} else {
		lttng_evaluation_buffer_usage_get_usage(
				evaluation, &buffer_usage_bytes);
		switch (condition_type) {
		case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
			if (buffer_usage_bytes > threshold_bytes) {
				printf("error: buffer usage ratio is bigger than set threshold bytes\n");
				ret = 1;
				goto end;
			}
			break;
		case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
			if (buffer_usage_bytes < threshold_bytes) {
				printf("error: buffer usage ratio is lower than set threshold bytes\n");
				ret = 1;
				goto end;
			}
			break;
		default:
			printf("error: Unknown condition type\n");
			ret = 1;
			goto end;
		}
	}

	switch (condition_type) {
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
		string_condition_type = string_low;
		break;
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
		string_condition_type = string_high;
		break;
	default:
		printf("error: Unknown condition type\n");
		ret = 1;
		goto end;
	}

	printf("notification: %s %d\n", string_condition_type, nr_notifications);
end:
	return ret;
}
Commit	Line	Data
434f8068 JR	1	/*
	2	* base_client.c
	3	*
	4	* Base client application for testing of LTTng notification API
	5	*
	6	* Copyright 2017 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
	7	*
9d16b343	8	* SPDX-License-Identifier: MIT
434f8068	9	*
434f8068 JR	10	*/
	11
	12	#include <stdio.h>
	13	#include <stdbool.h>
	14	#include <string.h>
	15	#include <unistd.h>
	16	#include <inttypes.h>
	17	#include <assert.h>
	18
	19	#include <lttng/action/action.h>
091fa780	20	#include <lttng/action/group.h>
434f8068 JR	21	#include <lttng/action/notify.h>
	22	#include <lttng/condition/buffer-usage.h>
	23	#include <lttng/condition/condition.h>
	24	#include <lttng/condition/evaluation.h>
	25	#include <lttng/domain.h>
	26	#include <lttng/endpoint.h>
	27	#include <lttng/notification/channel.h>
	28	#include <lttng/notification/notification.h>
	29	#include <lttng/trigger/trigger.h>
25040abc	30	#include <lttng/lttng-error.h>
434f8068 JR	31
	32	static unsigned int nr_notifications = 0;
	33	static unsigned int nr_expected_notifications = 0;
	34	static const char *session_name = NULL;
	35	static const char *channel_name = NULL;
	36	static double threshold_ratio = 0.0;
	37	static uint64_t threshold_bytes = 0;
	38	static bool is_threshold_ratio = false;
091fa780	39	static bool use_action_group = false;
434f8068 JR	40	static enum lttng_condition_type buffer_usage_type = LTTNG_CONDITION_TYPE_UNKNOWN;
	41	static enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE;
	42
	43	int handle_condition(
	44	const struct lttng_condition *condition,
	45	const struct lttng_evaluation *condition_evaluation);
	46
53089c7c SM	47	static
	48	int parse_arguments(char **argv)
	49	{
434f8068 JR	50	const char *domain_type_string = NULL;
	51	const char *buffer_usage_type_string = NULL;
	52	const char *buffer_usage_threshold_type = NULL;
	53	const char *buffer_usage_threshold_value = NULL;
	54	const char *nr_expected_notifications_string = NULL;
091fa780	55	const char *use_action_group_value = NULL;
434f8068 JR	56
	57	session_name = argv[1];
	58	channel_name = argv[2];
	59	domain_type_string = argv[3];
	60	buffer_usage_type_string = argv[4];
	61	buffer_usage_threshold_type = argv[5];
	62	buffer_usage_threshold_value = argv[6];
	63	nr_expected_notifications_string = argv[7];
091fa780	64	use_action_group_value = argv[8];
434f8068 JR	65
	66	/* Parse arguments */
	67	/* Domain type */
	68	if (!strcasecmp("LTTNG_DOMAIN_UST", domain_type_string)) {
	69	domain_type = LTTNG_DOMAIN_UST;
	70	}
	71	if (!strcasecmp("LTTNG_DOMAIN_KERNEL", domain_type_string)) {
	72	domain_type = LTTNG_DOMAIN_KERNEL;
	73	}
	74	if (domain_type == LTTNG_DOMAIN_NONE) {
	75	printf("error: Unknown domain type\n");
	76	goto error;
	77	}
	78
	79	/* Buffer usage condition type */
	80	if (!strcasecmp("low", buffer_usage_type_string)) {
	81	buffer_usage_type = LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW;
	82	}
	83	if (!strcasecmp("high", buffer_usage_type_string)) {
	84	buffer_usage_type = LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH;
	85	}
	86	if (buffer_usage_type == LTTNG_CONDITION_TYPE_UNKNOWN) {
	87	printf("error: Unknown condition type\n");
	88	goto error;
	89	}
	90
	91	/* Ratio or bytes ? */
	92	if (!strcasecmp("bytes", buffer_usage_threshold_type)) {
	93	is_threshold_ratio = false;
	94	sscanf(buffer_usage_threshold_value, "%" SCNu64, &threshold_bytes);
	95	}
	96
	97	if (!strcasecmp("ratio", buffer_usage_threshold_type)) {
	98	is_threshold_ratio = true;
	99	sscanf(buffer_usage_threshold_value, "%lf", &threshold_ratio);
	100	}
	101
	102	/* Number of notification to expect */
	103	sscanf(nr_expected_notifications_string, "%d", &nr_expected_notifications);
	104
091fa780 FD	105	/* Put notify action in a group. */
	106	if (!strcasecmp("1", use_action_group_value)) {
	107	use_action_group = true;
	108	}
	109
434f8068 JR	110	return 0;
	111	error:
	112	return 1;
	113	}
	114
	115	int main(int argc, char **argv)
	116	{
	117	int ret = 0;
	118	enum lttng_condition_status condition_status;
091fa780	119	enum lttng_action_status action_status;
434f8068 JR	120	enum lttng_notification_channel_status nc_status;
	121	struct lttng_notification_channel *notification_channel = NULL;
	122	struct lttng_condition *condition = NULL;
	123	struct lttng_action *action = NULL;
	124	struct lttng_trigger *trigger = NULL;
	125
	126	/*
	127	* Disable buffering on stdout.
	128	* Safety measure to prevent hang on the validation side since
	129	* stdout is used for outside synchronization.
	130	*/
	131	setbuf(stdout, NULL);
	132
091fa780	133	if (argc < 9) {
434f8068 JR	134	printf("error: Missing arguments for tests\n");
	135	ret = 1;
	136	goto end;
	137	}
	138
	139	ret = parse_arguments(argv);
	140	if (ret) {
	141	printf("error: Could not parse arguments\n");
	142	goto end;
	143	}
	144
	145	/* Setup */
	146	notification_channel = lttng_notification_channel_create(
	147	lttng_session_daemon_notification_endpoint);
	148	if (!notification_channel) {
	149	printf("error: Could not create notification channel\n");
	150	ret = 1;
	151	goto end;
	152	}
	153
	154	switch (buffer_usage_type) {
	155	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	156	condition = lttng_condition_buffer_usage_low_create();
	157	break;
	158	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	159	condition = lttng_condition_buffer_usage_high_create();
	160	break;
	161	default:
	162	printf("error: Invalid buffer_usage_type\n");
	163	ret = 1;
	164	goto end;
	165	}
	166
	167	if (!condition) {
	168	printf("error: Could not create condition object\n");
	169	ret = 1;
	170	goto end;
	171	}
	172
	173	if (is_threshold_ratio) {
	174	condition_status = lttng_condition_buffer_usage_set_threshold_ratio(
	175	condition, threshold_ratio);
	176	} else {
	177	condition_status = lttng_condition_buffer_usage_set_threshold(
	178	condition, threshold_bytes);
	179	}
	180
	181	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
	182	printf("error: Could not set threshold\n");
	183	ret = 1;
	184	goto end;
	185	}
	186
	187	condition_status = lttng_condition_buffer_usage_set_session_name(
	188	condition, session_name);
	189	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
	190	printf("error: Could not set session name\n");
	191	ret = 1;
	192	goto end;
	193	}
	194	condition_status = lttng_condition_buffer_usage_set_channel_name(
	195	condition, channel_name);
	196	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
	197	printf("error: Could not set channel name\n");
198	ret = 1;
199	goto end;
200	}
201	condition_status = lttng_condition_buffer_usage_set_domain_type(
854382b8	202	condition, domain_type);
434f8068 JR	203	if (condition_status != LTTNG_CONDITION_STATUS_OK) {
	204	printf("error: Could not set domain type\n");
	205	ret = 1;
	206	goto end;
	207	}
	208
091fa780 FD	209	if (use_action_group) {
	210	struct lttng_action notify, group;
	211
	212	group = lttng_action_group_create();
	213	if (!group) {
	214	printf("error: Could not create action group\n");
	215	ret = 1;
	216	goto end;
	217	}
	218
	219	notify = lttng_action_notify_create();
	220	if (!notify) {
	221	lttng_action_destroy(group);
	222	printf("error: Could not create action notify\n");
	223	ret = 1;
	224	goto end;
	225	}
	226
	227	action_status = lttng_action_group_add_action(group, notify);
	228	if (action_status != LTTNG_ACTION_STATUS_OK) {
	229	printf("error: Could not add action notify to action group\n");
	230	lttng_action_destroy(group);
	231	lttng_action_destroy(notify);
	232	ret = 1;
	233	goto end;
	234	}
	235
	236	action = group;
	237	} else {
	238	action = lttng_action_notify_create();
	239	if (!action) {
	240	printf("error: Could not create action notify\n");
	241	ret = 1;
	242	goto end;
	243	}
434f8068 JR	244	}
	245
	246	trigger = lttng_trigger_create(condition, action);
	247	if (!trigger) {
	248	printf("error: Could not create trigger\n");
	249	ret = 1;
	250	goto end;
	251	}
	252
	253	ret = lttng_register_trigger(trigger);
	254
	255	/*
	256	* An equivalent trigger might already be registered if an other app
	257	* registered an equivalent trigger.
	258	*/
	259	if (ret < 0 && ret != -LTTNG_ERR_TRIGGER_EXISTS) {
	260	printf("error: %s\n", lttng_strerror(ret));
	261	ret = 1;
	262	goto end;
	263	}
	264
	265	nc_status = lttng_notification_channel_subscribe(notification_channel, condition);
	266	if (nc_status != LTTNG_NOTIFICATION_CHANNEL_STATUS_OK) {
	267	printf("error: Could not subscribe\n");
	268	ret = 1;
	269	goto end;
	270	}
	271
	272	/* Tell outside process that the client is ready */
	273	printf("sync: ready\n");
	274
	275	for (;;) {
	276	struct lttng_notification *notification;
	277	enum lttng_notification_channel_status status;
	278	const struct lttng_evaluation *notification_evaluation;
	279	const struct lttng_condition *notification_condition;
	280
	281	if (nr_notifications == nr_expected_notifications) {
	282	ret = 0;
	283	goto end;
	284	}
	285	/* Receive the next notification. */
	286	status = lttng_notification_channel_get_next_notification(
	287	notification_channel,
	288	&notification);
	289
	290	switch (status) {
	291	case LTTNG_NOTIFICATION_CHANNEL_STATUS_OK:
	292	break;
	293	case LTTNG_NOTIFICATION_CHANNEL_STATUS_NOTIFICATIONS_DROPPED:
	294	ret = 1;
	295	printf("error: No drop should be observed during this test app\n");
	296	goto end;
	297	case LTTNG_NOTIFICATION_CHANNEL_STATUS_CLOSED:
	298	/*
	299	* The notification channel has been closed by the
	300	* session daemon. This is typically caused by a session
	301	* daemon shutting down (cleanly or because of a crash).
	302	*/
	303	printf("error: Notification channel was closed\n");
	304	ret = 1;
	305	goto end;
	306	default:
	307	/* Unhandled conditions / errors. */
091fa780	308	printf("error: Unknown notification channel status (%d) \n", status);
434f8068 JR	309	ret = 1;
	310	goto end;
	311	}
	312
	313	notification_condition = lttng_notification_get_condition(notification);
	314	notification_evaluation = lttng_notification_get_evaluation(notification);
	315
	316	ret = handle_condition(notification_condition, notification_evaluation);
	317	nr_notifications++;
	318
	319	lttng_notification_destroy(notification);
	320	if (ret != 0) {
	321	goto end;
	322	}
	323	}
	324	end:
	325	if (trigger) {
	326	lttng_unregister_trigger(trigger);
	327	}
eff748d0 JR	328	if (lttng_notification_channel_unsubscribe(notification_channel, condition)) {
	329	printf("error: channel unsubscribe error\n");
	330	}
434f8068 JR	331	lttng_trigger_destroy(trigger);
	332	lttng_condition_destroy(condition);
	333	lttng_action_destroy(action);
	334	lttng_notification_channel_destroy(notification_channel);
	335	printf("exit: %d\n", ret);
	336	return ret;
	337	}
	338
	339	int handle_condition(
	340	const struct lttng_condition *condition,
	341	const struct lttng_evaluation *evaluation)
	342	{
	343	int ret = 0;
	344	const char *string_low = "low";
	345	const char *string_high = "high";
	346	const char *string_condition_type = NULL;
	347	const char *condition_session_name = NULL;
	348	const char *condition_channel_name = NULL;
	349	enum lttng_condition_type condition_type;
	350	enum lttng_domain_type condition_domain_type;
	351	double buffer_usage_ratio;
	352	uint64_t buffer_usage_bytes;
	353
	354	condition_type = lttng_condition_get_type(condition);
	355
	356	if (condition_type != buffer_usage_type) {
	357	ret = 1;
	358	printf("error: condition type and buffer usage type are not the same\n");
	359	goto end;
	360	}
	361
	362	/* Fetch info to test */
eff748d0	363	ret = lttng_condition_buffer_usage_get_session_name(condition,
434f8068	364	&condition_session_name);
eff748d0 JR	365	if (ret) {
	366	printf("error: session name could not be fetched\n");
	367	ret = 1;
	368	goto end;
	369	}
	370	ret = lttng_condition_buffer_usage_get_channel_name(condition,
434f8068	371	&condition_channel_name);
eff748d0 JR	372	if (ret) {
	373	printf("error: channel name could not be fetched\n");
	374	ret = 1;
	375	goto end;
	376	}
	377	ret = lttng_condition_buffer_usage_get_domain_type(condition,
434f8068	378	&condition_domain_type);
eff748d0 JR	379	if (ret) {
	380	printf("error: domain type could not be fetched\n");
	381	ret = 1;
	382	goto end;
	383	}
434f8068 JR	384
	385	if (strcmp(condition_session_name, session_name) != 0) {
	386	printf("error: session name differs\n");
	387	ret = 1;
	388	goto end;
	389	}
	390
	391	if (strcmp(condition_channel_name, channel_name) != 0) {
	392	printf("error: channel name differs\n");
	393	ret = 1;
	394	goto end;
	395	}
	396
	397	if (condition_domain_type != domain_type) {
	398	printf("error: domain type differs\n");
	399	ret = 1;
	400	goto end;
	401	}
	402
	403	if (is_threshold_ratio) {
	404	lttng_evaluation_buffer_usage_get_usage_ratio(
	405	evaluation, &buffer_usage_ratio);
	406	switch (condition_type) {
	407	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	408	if (buffer_usage_ratio > threshold_ratio) {
	409	printf("error: buffer usage ratio is bigger than set threshold ratio\n");
	410	ret = 1;
	411	goto end;
	412	}
	413	break;
	414	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	415	if (buffer_usage_ratio < threshold_ratio) {
	416	printf("error: buffer usage ratio is lower than set threshold ratio\n");
	417	ret = 1;
	418	goto end;
	419	}
	420	break;
	421	default:
	422	printf("error: Unknown condition type\n");
	423	ret = 1;
	424	goto end;
	425	}
	426	} else {
	427	lttng_evaluation_buffer_usage_get_usage(
	428	evaluation, &buffer_usage_bytes);
	429	switch (condition_type) {
	430	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	431	if (buffer_usage_bytes > threshold_bytes) {
	432	printf("error: buffer usage ratio is bigger than set threshold bytes\n");
	433	ret = 1;
	434	goto end;
	435	}
	436	break;
	437	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	438	if (buffer_usage_bytes < threshold_bytes) {
	439	printf("error: buffer usage ratio is lower than set threshold bytes\n");
	440	ret = 1;
	441	goto end;
	442	}
	443	break;
	444	default:
	445	printf("error: Unknown condition type\n");
	446	ret = 1;
	447	goto end;
448	}
449	}
450
451	switch (condition_type) {
452	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
453	string_condition_type = string_low;
454	break;
455	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
456	string_condition_type = string_high;
457	break;
458	default:
459	printf("error: Unknown condition type\n");
460	ret = 1;
461	goto end;
462	}
463
464	printf("notification: %s %d\n", string_condition_type, nr_notifications);
465	end:
466	return ret;
467	}