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/**
* Copyright 2017 VMware, 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
*
* https://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 io.micrometer.core.instrument.distribution;
import io.micrometer.core.instrument.util.TimeUtils;
import java.util.concurrent.TimeUnit;
/**
* The count of events less than or equal to a histogram bucket.
*
* @author Trustin Heuiseung Lee
*/
public final class CountAtBucket {
private final double bucket;
private final double count;
/**
* Create a {@code CountAtBucket} instance.
*
* @param bucket bucket
* @param count count
* @deprecated Use {@link #CountAtBucket(double, double)} instead since 1.4.0.
*/
@Deprecated
public CountAtBucket(long bucket, double count) {
this((double) bucket, count);
}
/**
* Create a {@code CountAtBucket} instance.
*
* @param bucket bucket
* @param count count
* @since 1.4.0
*/
public CountAtBucket(double bucket, double count) {
this.bucket = bucket;
this.count = count;
}
public double bucket() {
return bucket;
}
public double bucket(TimeUnit unit) {
return TimeUtils.nanosToUnit(bucket, unit);
}
public double count() {
return count;
}
boolean isPositiveInf() {
// check for Long.MAX_VALUE to maintain backwards compatibility
return bucket == Double.POSITIVE_INFINITY ||
bucket == Double.MAX_VALUE ||
(long) bucket == Long.MAX_VALUE;
}
@Override
public String toString() {
return "(" + count + " at " + bucket + ')';
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
CountAtBucket that = (CountAtBucket) o;
return Double.compare(that.bucket, bucket) == 0 && Double.compare(that.count, count) == 0;
}
@Override
public int hashCode() {
long tempBucket = Double.doubleToLongBits(bucket);
int result = (int) (tempBucket ^ (tempBucket >>> 32));
long tempCount = Double.doubleToLongBits(count);
result = 31 * result + (int) (tempCount ^ (tempCount >>> 32));
return result;
}
}