com.netflix.spectator.api.Measurement Maven / Gradle / Ivy
/**
* Copyright 2015 Netflix, Inc.
*
* Licensed 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 com.netflix.spectator.api;
/**
* A measurement sampled from a meter.
*/
public final class Measurement {
private final Id id;
private final long timestamp;
private final double value;
/** Create a new instance. */
public Measurement(Id id, long timestamp, double value) {
this.id = id;
this.timestamp = timestamp;
this.value = value;
}
/** Identifier for the measurement. */
public Id id() {
return id;
}
/**
* The timestamp in milliseconds since the epoch for when the measurement was taken.
*/
public long timestamp() {
return timestamp;
}
/** Value for the measurement. */
public double value() {
return value;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null || !(obj instanceof Measurement)) return false;
Measurement other = (Measurement) obj;
return id.equals(other.id)
&& timestamp == other.timestamp
&& Double.compare(value, other.value) == 0;
}
@Override
public int hashCode() {
final int prime = 31;
int hc = prime;
hc = prime * hc + id.hashCode();
hc = prime * hc + Long.valueOf(timestamp).hashCode();
hc = prime * hc + Double.valueOf(value).hashCode();
return hc;
}
@Override
public String toString() {
return "Measurement(" + id.toString() + "," + timestamp + "," + value + ")";
}
}