/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.brooklyn.api.sensor;
import org.apache.brooklyn.api.entity.Entity;
/**
* A tuple representing a piece of data from a {@link Sensor} on an {@link Entity}.
*/
public interface SensorEvent<T> {
/**
* The {@link Entity} where the data originated.
*/
Entity getSource();
/**
* The {@link Sensor} describing the data.
*/
Sensor<T> getSensor();
/**
* The value for the {@link Sensor} data.
*/
T getValue();
/**
* The time this data was published, as a UTC time in milliseconds (e.g. as returned
* by {@link System#currentTimeMillis()}.
*/
long getTimestamp();
}