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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.model.api;
import com.yahoo.slime.Cursor;
import com.yahoo.slime.Inspector;
import com.yahoo.slime.Slime;
import com.yahoo.slime.SlimeUtils;
import com.yahoo.slime.Type;
import java.math.BigDecimal;
import java.util.Objects;
import java.util.Optional;
/**
* Quota for the application deployed. If the application exceeds this quota, deployment will fail.
*
* @author ogronnesby
*/
public class Quota {
private static final Quota UNLIMITED = new Quota(Optional.empty(), Optional.empty());
/** The max size of a cluster inside application */
private final Optional<Integer> maxClusterSize;
/** The max budget in dollars per hour */
private final Optional<BigDecimal> budget;
public Quota(Optional<Integer> maxClusterSize, Optional<Integer> budget) {
this(maxClusterSize, budget.map(BigDecimal::new), true);
}
// TODO: Remove unused argument
private Quota(Optional<Integer> maxClusterSize, Optional<BigDecimal> budget, boolean isDecimal) {
this.maxClusterSize = Objects.requireNonNull(maxClusterSize);
this.budget = Objects.requireNonNull(budget);
}
public static Quota fromSlime(Inspector inspector) {
var clusterSize = SlimeUtils.optionalInteger(inspector.field("clusterSize"));
var budget = budgetFromSlime(inspector.field("budget"));
return new Quota(clusterSize.stream().boxed().findFirst(), budget, true);
}
public Quota withBudget(BigDecimal budget) {
return new Quota(this.maxClusterSize, Optional.of(budget), true);
}
public Quota withClusterSize(int clusterSize) {
return new Quota(Optional.of(clusterSize), this.budget, true);
}
public Slime toSlime() {
var slime = new Slime();
toSlime(slime.setObject());
return slime;
}
public void toSlime(Cursor root) {
maxClusterSize.ifPresent(clusterSize -> root.setLong("clusterSize", clusterSize));
budget.ifPresent(b -> root.setString("budget", b.toPlainString()));
}
public static Quota unlimited() { return UNLIMITED; }
public Optional<Integer> maxClusterSize() {
return maxClusterSize;
}
public Optional<BigDecimal> budgetAsDecimal() { return budget; }
public Optional<Integer> budget() { return budget.map(BigDecimal::intValue); }
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Quota quota = (Quota) o;
return Objects.equals(maxClusterSize, quota.maxClusterSize) &&
Objects.equals(budget, quota.budget);
}
@Override
public int hashCode() {
return Objects.hash(maxClusterSize, budget);
}
@Override
public String toString() {
return "Quota{" +
"maxClusterSize=" + maxClusterSize +
", budget=" + budget +
'}';
}
/**
* Since Slime does not support any decimal numeric value that isn't a floating point of some sort, we need
* to be liberal in what we accept. Since we are dealing with currency, ideally we would have a decimal
* data type all the way through.
*
* There are three ways of communicating the budget to the Quota class:
* 1. A LONG means we are looking at the budget in whole dollars. This is the legacy way.
* 2. A STRING formatted as a number is a full precision decimal number. This is the proper way.
* 3. A DOUBLE gets translated into a decimal type, but loses precision. This is the CYA way.
*/
private static Optional<BigDecimal> budgetFromSlime(Inspector inspector) {
if (inspector.type() == Type.STRING) return Optional.of(inspector.asString()).map(BigDecimal::new);
if (inspector.type() == Type.LONG) return Optional.of(inspector.asLong()).map(BigDecimal::new);
if (inspector.type() == Type.DOUBLE) return Optional.of(inspector.asDouble()).map(BigDecimal::new);
return Optional.empty();
}
}
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