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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.provision;
import java.util.Objects;
/**
* The resources of a cluster
*
* @author bratseth
*/
public class ClusterResources {
/** The node count in the cluster */
private final int nodes;
/** The number of node groups in the cluster */
private final int groups;
/** The resources of each node in the cluster */
private final NodeResources nodeResources;
public ClusterResources(int nodes, int groups, NodeResources nodeResources) {
this.nodes = nodes;
this.groups = groups == 0 ? 1 : groups; // TODO: Throw on groups == 0 after February 2023
this.nodeResources = Objects.requireNonNull(nodeResources);
}
/** Returns the total number of allocated nodes (over all groups) */
public int nodes() { return nodes; }
public int groups() { return groups; }
public NodeResources nodeResources() { return nodeResources; }
public ClusterResources with(NodeResources resources) { return new ClusterResources(nodes, groups, resources); }
public ClusterResources withNodes(int nodes) { return new ClusterResources(nodes, groups, nodeResources); }
public ClusterResources withGroups(int groups) { return new ClusterResources(nodes, groups, nodeResources); }
/** Returns true if this is smaller than the given resources in any dimension */
public boolean smallerThan(ClusterResources other) {
if (this.nodes < other.nodes) return true;
if (this.groups < other.groups) return true;
if (this.nodeResources.isUnspecified() || other.nodeResources.isUnspecified()) return false;
if ( ! this.nodeResources.justNumbers().satisfies(other.nodeResources.justNumbers())) return true;
return false;
}
/** Returns true if this is within the given limits (inclusive) and is compatible with them */
public boolean isWithin(ClusterResources min, ClusterResources max) {
if (this.smallerThan(min)) return false;
if (max.smallerThan(this)) return false;
if ( ! this.nodeResources.justNonNumbers().compatibleWith(min.nodeResources.justNonNumbers())) return false;
if ( ! this.nodeResources.justNonNumbers().compatibleWith(max.nodeResources.justNonNumbers())) return false;
return true;
}
/** Returns the total resources of this, that is the number of nodes times the node resources */
public NodeResources totalResources() {
return nodeResources.withVcpu(nodeResources.vcpu() * nodes)
.withMemoryGb(nodeResources.memoryGb() * nodes)
.withDiskGb(nodeResources.diskGb() * nodes)
.withBandwidthGbps(nodeResources.bandwidthGbps() * nodes);
}
public ClusterResources justNumbers() {
return new ClusterResources(nodes, groups, nodeResources.justNumbers());
}
/** Returns the standard cost of these resources, in dollars per hour */
public double cost() {
return nodes * nodeResources.cost();
}
@Override
public boolean equals(Object o) {
if (o == this) return true;
if ( ! (o instanceof ClusterResources other)) return false;
if (other.nodes != this.nodes) return false;
if (other.groups != this.groups) return false;
if ( ! other.nodeResources.equals(this.nodeResources)) return false;
return true;
}
@Override
public int hashCode() {
return Objects.hash(nodes, groups, nodeResources);
}
@Override
public String toString() {
return nodes + " nodes" +
(groups > 1 ? " (in " + groups + " groups)" : "") +
" with " + nodeResources;
}
}
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