com.couchbase.client.core.time.LinearDelay Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of core-io Show documentation
Show all versions of core-io Show documentation
The official Couchbase JVM Core IO Library
/**
* Copyright (C) 2014 Couchbase, Inc.
*
* 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 DEALING
* IN THE SOFTWARE.
*/
package com.couchbase.client.core.time;
import java.util.concurrent.TimeUnit;
/**
* Delay which increases linearly for every attempt.
*
* @author Michael Nitschinger
* @since 1.1.0
*/
public class LinearDelay extends Delay {
private final double growBy;
private final long lower;
private final long upper;
LinearDelay(TimeUnit unit, long upper, long lower, double growBy) {
super(unit);
this.growBy = growBy;
this.lower = lower;
this.upper = upper;
}
@Override
public long calculate(long attempt) {
long calc = Math.round(attempt * growBy);
if (calc < lower) {
return lower;
}
if (calc > upper) {
return upper;
}
return calc;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("LinearDelay{");
sb.append("growBy ").append(growBy);
sb.append(" " + unit());
sb.append("; lower=").append(lower);
sb.append(", upper=").append(upper);
sb.append('}');
return sb.toString();
}
}