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// Copyright Verizon Media. 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) {
if (nodes > 0 && groups > 0 && nodes % groups != 0)
throw new IllegalArgumentException("The number of nodes (" + nodes +
") must be divisible by the number of groups (" + groups + ")");
this.nodes = nodes;
this.groups = groups;
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 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.justNumbers().satisfies(other.nodeResources.justNumbers())) return true;
return false;
}
@Override
public boolean equals(Object o) {
if (o == this) return true;
if ( ! (o instanceof ClusterResources)) return false;
ClusterResources other = (ClusterResources)o;
if (other.nodes != this.nodes) return false;
if (other.groups != this.groups) return false;
if (other.nodeResources != 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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