org.apache.kafka.common.metrics.Quota Maven / Gradle / Ivy
/*
* 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.kafka.common.metrics;
/**
* An upper or lower bound for metrics
*/
public final class Quota {
private final boolean upper;
private final double bound;
public Quota(double bound, boolean upper) {
this.bound = bound;
this.upper = upper;
}
public static Quota upperBound(double upperBound) {
return new Quota(upperBound, true);
}
public static Quota lowerBound(double lowerBound) {
return new Quota(lowerBound, false);
}
public boolean isUpperBound() {
return this.upper;
}
public double bound() {
return this.bound;
}
public boolean acceptable(double value) {
return (upper && value <= bound) || (!upper && value >= bound);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (int) this.bound;
result = prime * result + (this.upper ? 1 : 0);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (!(obj instanceof Quota))
return false;
Quota that = (Quota) obj;
return (that.bound == this.bound) && (that.upper == this.upper);
}
@Override
public String toString() {
return (upper ? "upper=" : "lower=") + bound;
}
}