--- /dev/null
+/*
+ * base_client.c
+ *
+ * Base client application for testing of LTTng trigger API
+ *
+ * Copyright 2019 Jonathan Rajotte <jonathan.rajotte-julien@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.
+ */
+
+#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/start-session.h>
+#include <lttng/action/notify.h>
+#include <lttng/condition/condition.h>
+#include <lttng/condition/event-rule.h>
+#include <lttng/event-rule/tracepoint.h>
+#include <lttng/domain.h>
+#include <lttng/trigger/trigger.h>
+#include <lttng/lttng-error.h>
+#include <lttng/endpoint.h>
+#include <lttng/notification/channel.h>
+#include <lttng/notification/notification.h>
+
+const char *session_name = NULL;
+enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE;
+const char *pattern = NULL;
+
+int parse_arguments(char **argv) {
+ const char *domain_type_string = NULL;
+
+ session_name = argv[1];
+ domain_type_string = argv[2];
+ pattern = argv[3];
+
+ /* 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 (!strcasecmp("LTTNG_DOMAIN_JUL", domain_type_string)) {
+ domain_type = LTTNG_DOMAIN_JUL;
+ }
+ if (!strcasecmp("LTTNG_DOMAIN_PYTHON", domain_type_string)) {
+ domain_type = LTTNG_DOMAIN_PYTHON;
+ }
+ if (!strcasecmp("LTTNG_DOMAIN_LOG4J", domain_type_string)) {
+ domain_type = LTTNG_DOMAIN_LOG4J;
+ }
+ if (domain_type == LTTNG_DOMAIN_NONE) {
+ printf("error: Unknown domain type\n");
+ goto error;
+ }
+
+ return 0;
+error:
+ return 1;
+}
+
+int main(int argc, char **argv)
+{
+ int ret = 0;
+ struct lttng_condition *condition = NULL;
+
+ enum lttng_event_rule_status event_rule_status;
+ struct lttng_event_rule *event_rule = NULL;
+
+ enum lttng_action_status action_status;
+ struct lttng_action *action = NULL;
+
+ enum lttng_notification_channel_status nc_status;
+ struct lttng_notification_channel *notification_channel = NULL;
+
+ const char* exclusions[] = { "sample_component:message2"};
+
+ struct lttng_trigger *trigger = NULL;
+
+ if (argc < 4) {
+ 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;
+ }
+
+ event_rule = lttng_event_rule_tracepoint_create(domain_type);
+ if (!event_rule) {
+ printf("error: Could not create condition object\n");
+ ret = 1;
+ goto end;
+ }
+
+ event_rule_status = lttng_event_rule_tracepoint_set_pattern(event_rule, pattern);
+ if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) {
+ printf("error: Could not set pattern\n");
+ ret = 1;
+ goto end;
+ }
+
+ event_rule_status = lttng_event_rule_tracepoint_set_filter(event_rule, "message=='Hello World'");
+ if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) {
+ printf("error: Could not set pattern\n");
+ ret = 1;
+ goto end;
+ }
+
+ event_rule_status = lttng_event_rule_tracepoint_set_exclusions(event_rule, 1, exclusions);
+ if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) {
+ printf("error: Could not set exclusions\n");
+ ret = 1;
+ goto end;
+ }
+
+ condition = lttng_condition_event_rule_create(event_rule);
+ if (!condition) {
+ printf("error: Could not create condition\n");
+ ret = 1;
+ goto end;
+ }
+ /* Ownership was passed to condition */
+ event_rule = NULL;
+
+ 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);
+
+ 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;
+ }
+ /*
+ * 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;
+ }
+
+ for (;;) {
+ struct lttng_notification *notification;
+ enum lttng_notification_channel_status status;
+ const struct lttng_evaluation *notification_evaluation;
+ const struct lttng_condition *notification_condition;
+ const char *name;
+
+ /* Receive the next notification. */
+ status = lttng_notification_channel_get_next_notification(
+ notification_channel,
+ ¬ification);
+
+ 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\n");
+ ret = 1;
+ goto end;
+ }
+
+ notification_condition = lttng_notification_get_condition(notification);
+ notification_evaluation = lttng_notification_get_evaluation(notification);
+ switch (lttng_evaluation_get_type(notification_evaluation)) {
+ case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
+ lttng_evaluation_event_rule_get_trigger_name(notification_evaluation, &name);
+ printf("Received nootification from trigger \"%s\"\n", name);
+ break;
+ default:
+ printf("error: Wrong notification evaluation type \n");
+ break;
+
+ }
+
+ lttng_notification_destroy(notification);
+ }
+end:
+ if (trigger) {
+ lttng_unregister_trigger(trigger);
+ }
+ lttng_event_rule_destroy(event_rule);
+ lttng_trigger_destroy(trigger);
+ lttng_condition_destroy(condition);
+ lttng_action_destroy(action);
+ printf("exit: %d\n", ret);
+ return ret;
+}
projects / lttng-tools.git / blobdiff