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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.config.model.provision;
import com.yahoo.config.model.api.HostProvisioner;
import com.yahoo.config.provision.Capacity;
import com.yahoo.config.provision.ClusterMembership;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.Flavor;
import com.yahoo.config.provision.HostSpec;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.config.provision.ProvisionLogger;
import com.yahoo.net.HostName;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
/**
* A host provisioner used when there is no hosts.xml file (using localhost as the only host)
* No state in this provisioner, i.e it does not know anything about the active
* application if one exists.
*
* @author hmusum
*/
public class SingleNodeProvisioner implements HostProvisioner {
private final Host host; // the only host in this system
private final HostSpec hostSpec;
private int counter = 0;
public SingleNodeProvisioner() {
host = new Host(HostName.getLocalhost());
this.hostSpec = new HostSpec(host.hostname(), Optional.empty());
}
public SingleNodeProvisioner(Flavor flavor) {
host = new Host(HostName.getLocalhost());
this.hostSpec = new HostSpec(host.hostname(),
flavor.resources(), flavor.resources(), flavor.resources(),
ClusterMembership.from(ClusterSpec.specification(ClusterSpec.Type.content, ClusterSpec.Id.from("test")).group(ClusterSpec.Group.from(0)).vespaVersion("1").build(), 0),
Optional.empty(), Optional.empty(), Optional.empty());
}
@Override
public HostSpec allocateHost(String alias) {
return hostSpec;
}
@Override
public List<HostSpec> prepare(ClusterSpec cluster, Capacity capacity, ProvisionLogger logger) {
List<HostSpec> hosts = new ArrayList<>();
hosts.add(new HostSpec(host.hostname(),
NodeResources.unspecified(), NodeResources.unspecified(), NodeResources.unspecified(),
ClusterMembership.from(cluster.with(Optional.of(ClusterSpec.Group.from(0))), counter++),
Optional.empty(), Optional.empty(), Optional.empty()));
return hosts;
}
}
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