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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.api.integration.resource;
import com.yahoo.component.Version;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.config.provision.zone.ZoneId;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.Node;
import java.time.Instant;
import java.util.List;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;
/**
* Represents the resources allocated to a deployment at a specific point in time.
*
* @author olaa
*/
public class ResourceSnapshot {
private static final NodeResources zero = new NodeResources(
0, 0, 0, 0,
NodeResources.DiskSpeed.any,
NodeResources.StorageType.any,
NodeResources.Architecture.any,
NodeResources.GpuResources.zero());
private final ApplicationId applicationId;
private final NodeResources resources;
private final Instant timestamp;
private final ZoneId zoneId;
private final int majorVersion;
public ResourceSnapshot(ApplicationId applicationId, NodeResources resources, Instant timestamp, ZoneId zoneId, int majorVersion) {
this.applicationId = applicationId;
this.resources = resources;
this.timestamp = timestamp;
this.zoneId = zoneId;
this.majorVersion = majorVersion;
}
public static ResourceSnapshot from(ApplicationId applicationId, int nodes, NodeResources resources, Instant timestamp, ZoneId zoneId) {
return new ResourceSnapshot(applicationId, resources.multipliedBy(nodes), timestamp, zoneId, 0);
}
public static ResourceSnapshot from(List<Node> nodes, Instant timestamp, ZoneId zoneId) {
Set<ApplicationId> applicationIds = nodes.stream()
.filter(node -> node.owner().isPresent())
.map(node -> node.owner().get())
.collect(Collectors.toSet());
Set<Integer> versions = nodes.stream()
.map(n -> n.wantedVersion().getMajor())
.collect(Collectors.toSet());
if (applicationIds.size() != 1) throw new IllegalArgumentException("List of nodes can only represent one application");
if (versions.size() != 1) throw new IllegalArgumentException("List of nodes can only represent one version");
var resources = nodes.stream()
.map(Node::resources)
.reduce(zero, ResourceSnapshot::addResources);
return new ResourceSnapshot(applicationIds.iterator().next(), resources, timestamp, zoneId, versions.iterator().next());
}
public ApplicationId getApplicationId() {
return applicationId;
}
public NodeResources resources() {
return resources;
}
public Instant getTimestamp() {
return timestamp;
}
public ZoneId getZoneId() {
return zoneId;
}
public int getMajorVersion() {
return majorVersion;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof ResourceSnapshot)) return false;
ResourceSnapshot other = (ResourceSnapshot) o;
return this.applicationId.equals(other.applicationId) &&
this.resources.equals(other.resources) &&
this.timestamp.equals(other.timestamp) &&
this.zoneId.equals(other.zoneId) &&
this.majorVersion == other.majorVersion;
}
@Override
public int hashCode(){
return Objects.hash(applicationId, resources, timestamp, zoneId, majorVersion);
}
/* This function does pretty much the same thing as NodeResources::add, but it allows adding resources
* where some dimensions that are not relevant for billing (yet) are not the same.
*
* TODO: Make this code respect all dimensions.
*/
private static NodeResources addResources(NodeResources a, NodeResources b) {
if (a.architecture() != b.architecture() && a.architecture() != NodeResources.Architecture.any && b.architecture() != NodeResources.Architecture.any) {
throw new IllegalArgumentException(a + " and " + b + " are not interchangeable for resource snapshots");
}
return new NodeResources(
a.vcpu() + b.vcpu(),
a.memoryGb() + b.memoryGb(),
a.diskGb() + b.diskGb(),
0,
NodeResources.DiskSpeed.any,
NodeResources.StorageType.any,
a.architecture() == NodeResources.Architecture.any ? b.architecture() : a.architecture(),
a.gpuResources().plus(b.gpuResources()));
}
}
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