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// Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.provisioning;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.config.provision.SystemName;
import com.yahoo.config.provision.Zone;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import java.util.Locale;
/**
* Defines the resource limits for nodes in various zones
*
* @author bratseth
*/
public class NodeResourceLimits {
private final NodeRepository nodeRepository;
public NodeResourceLimits(NodeRepository nodeRepository) {
this.nodeRepository = nodeRepository;
}
/** Validates the resources applications ask for (which are in "advertised" resource space) */
public void ensureWithinAdvertisedLimits(String type, NodeResources requested, ClusterSpec cluster) {
if (requested.isUnspecified()) return;
if (requested.memoryGb() < minAdvertisedMemoryGb(cluster.type()))
illegal(type, "memory", cluster, requested.memoryGb(), minAdvertisedMemoryGb(cluster.type()));
if (requested.diskGb() < minAdvertisedDiskGb(requested))
illegal(type, "disk", cluster, requested.diskGb(), minAdvertisedDiskGb(requested));
}
/** Returns whether the real resources we'll end up with on a given tenant node are within limits */
public boolean isWithinRealLimits(Node candidateTenantNode, ClusterSpec cluster) {
return isWithinRealLimits(nodeRepository.resourcesCalculator().realResourcesOf(candidateTenantNode, nodeRepository),
cluster.type());
}
/** Returns whether the real resources we'll end up with on a given tenant node are within limits */
public boolean isWithinRealLimits(NodeResources realResources, ClusterSpec.Type clusterType) {
if (realResources.isUnspecified()) return true;
if (realResources.memoryGb() < minRealMemoryGb(clusterType)) return false;
if (realResources.diskGb() < minRealDiskGb()) return false;
return true;
}
public NodeResources enlargeToLegal(NodeResources requested, ClusterSpec.Type clusterType) {
if (requested.isUnspecified()) return requested;
return requested.withMemoryGb(Math.max(minAdvertisedMemoryGb(clusterType), requested.memoryGb()))
.withDiskGb(Math.max(minAdvertisedDiskGb(requested), requested.diskGb()));
}
private double minAdvertisedMemoryGb(ClusterSpec.Type clusterType) {
if (nodeRepository.zone().system() == SystemName.dev) return 1; // Allow small containers in dev system
if (clusterType == ClusterSpec.Type.admin) return 2;
return 4;
}
private double minRealMemoryGb(ClusterSpec.Type clusterType) {
return minAdvertisedMemoryGb(clusterType) - 1.7;
}
private double minAdvertisedDiskGb(NodeResources requested) {
if (requested.storageType() == NodeResources.StorageType.local
&& nodeRepository.zone().getCloud().dynamicProvisioning()) {
if (nodeRepository.zone().system() == SystemName.Public)
return 10 + minRealDiskGb();
else
return 55 + minRealDiskGb();
}
return 4 + minRealDiskGb();
}
private double minRealDiskGb() {
return 6;
}
private void illegal(String type, String resource, ClusterSpec cluster, double requested, double minAllowed) {
String message = String.format(Locale.ENGLISH,
"%s cluster '%s': " + type + " " + resource +
" size is %.2f Gb but must be at least %.2f Gb",
cluster.type().name(), cluster.id().value(), requested, minAllowed);
throw new IllegalArgumentException(message);
}
}
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