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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.provision;
import com.yahoo.config.provisioning.FlavorsConfig;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
* A host or node flavor.
* *Host* flavors come from a configured set which corresponds to the actual flavors available in a zone.
* *Node* flavors are simply a wrapper of a NodeResources object.
*
* @author bratseth
*/
public class Flavor {
private boolean configured;
private final String name;
private final int cost;
private final Type type;
private final double bandwidth;
private final boolean retired;
/** The hardware resources of this flavor */
private NodeResources resources;
/** Creates a *host* flavor from configuration */
public Flavor(FlavorsConfig.Flavor flavorConfig) {
this.configured = true;
this.name = flavorConfig.name();
this.cost = flavorConfig.cost();
this.type = Type.valueOf(flavorConfig.environment());
this.resources = new NodeResources(flavorConfig.minCpuCores(),
flavorConfig.minMainMemoryAvailableGb(),
flavorConfig.minDiskAvailableGb(),
flavorConfig.fastDisk() ? NodeResources.DiskSpeed.fast : NodeResources.DiskSpeed.slow);
this.bandwidth = flavorConfig.bandwidth();
this.retired = flavorConfig.retired();
}
/** Creates a *node* flavor from a node resources spec */
public Flavor(NodeResources resources) {
Objects.requireNonNull(resources, "Resources cannot be null");
this.configured = false;
this.name = resources.toString();
this.cost = 0;
this.type = Type.DOCKER_CONTAINER;
this.bandwidth = 1;
this.retired = false;
this.resources = resources;
}
/** Returns the unique identity of this flavor if it is configured, or the resource spec string otherwise */
public String name() { return name; }
/**
* Get the monthly cost (total cost of ownership) in USD for this flavor, typically total cost
* divided by 36 months.
*
* @return monthly cost in USD
*/
public int cost() { return cost; }
/**
* True if this is a configured flavor used for hosts,
* false if it is a virtual flavor created on the fly from node resources
*/
public boolean isConfigured() { return configured; }
public NodeResources resources() { return resources; }
public double getMinMainMemoryAvailableGb() { return resources.memoryGb(); }
public double getMinDiskAvailableGb() { return resources.diskGb(); }
public boolean hasFastDisk() { return resources.diskSpeed() == NodeResources.DiskSpeed.fast; }
public double getBandwidth() { return bandwidth; }
public double getMinCpuCores() { return resources.vcpu(); }
/** Returns whether the flavor is retired */
public boolean isRetired() {
return retired;
}
public Type getType() { return type; }
/** Convenience, returns getType() == Type.DOCKER_CONTAINER */
public boolean isDocker() { return type == Type.DOCKER_CONTAINER; }
public String canonicalName() {
return name;
}
/**
* Returns whether this flavor satisfies the requested flavor
*/
public boolean satisfies(Flavor flavor) {
return this.equals(flavor);
}
@Override
public int hashCode() { return name.hashCode(); }
@Override
public boolean equals(Object o) {
if (o == this) return true;
if ( ! (o instanceof Flavor)) return false;
Flavor other = (Flavor)o;
if (configured)
return other.name.equals(this.name);
else
return this.resources.equals(other.resources);
}
@Override
public String toString() {
if (isConfigured())
return "flavor '" + name + "'";
else
return name;
}
public enum Type {
undefined, // Default value in config (flavors.def)
BARE_METAL,
VIRTUAL_MACHINE,
DOCKER_CONTAINER
}
}
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