package org.ovirt.engine.core.common.businessentities;
import java.io.Serializable;
import java.util.Collections;
import java.util.HashSet;
import java.util.Objects;
import java.util.Set;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
import org.ovirt.engine.core.common.utils.ValidationUtils;
import org.ovirt.engine.core.compat.Guid;
/**
* This entity represents a label that can be applies to other business entitites
* (currently VMs and Hosts). The label is intended to be used for specifying
* requirements and membership (not only) for VM scheduling purposes.
*/
public class Label implements Serializable, BusinessEntity<Guid>, Nameable, IVdcQueryable {
private static final long serialVersionUID = -6566155246916011274L;
@NotNull
private Guid id;
@Size(min = 1, max = BusinessEntitiesDefinitions.TAG_NAME_SIZE, message = "AFFINITY_LABEL_NAME_SIZE_INVALID")
@Pattern(regexp = ValidationUtils.NO_SPECIAL_CHARACTERS_I18N, message = "AFFINITY_LABEL_BAD_NAME")
private String name;
/**
* Set of Guids of VMs that are associated with this label.
*/
private Set<Guid> vms;
/**
* Set of Guids of Hosts that are associated with this label.
*/
private Set<Guid> hosts;
/**
* A read-only flag prevents user initiated update and delete actions
*/
private boolean readOnly;
@Override
public Object getQueryableId() {
return id;
}
@Override
public Guid getId() {
return id;
}
public void setId(Guid id) {
this.id = id;
}
@Override
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Set<Guid> getVms() {
return Collections.unmodifiableSet(vms);
}
public Set<Guid> getHosts() {
return Collections.unmodifiableSet(hosts);
}
public boolean addVm(VM entity) {
return vms.add(entity.getId());
}
public boolean removeVm(VM entity) {
return vms.remove(entity.getId());
}
public boolean addHost(VDS entity) {
return hosts.add(entity.getId());
}
public boolean removeHost(VDS entity) {
return hosts.remove(entity.getId());
}
public boolean isReadOnly() {
return readOnly;
}
public void setReadOnly(boolean readOnly) {
this.readOnly = readOnly;
}
/**
* This constructor is meant to be used by introspection frameworks like
* Jackson, GWT or for de-serialization.
*/
private Label() {
this.hosts = new HashSet<>();
this.vms = new HashSet<>();
}
/**
* This constructor is used by the LabelBuilder.
*
* @param id The Guid associated with this Label
* @param name The printable name of the label without spaces
* @param vms A set of Guids pointing to all VMs that have this label assigned
* @param hosts A set of Guids pointing to all Hosts that have this label assigned
* @param readOnly A read-only flag prevents user initiated update and delete actions
*/
protected Label(@NotNull Guid id, @NotNull String name, @NotNull Set<Guid> vms,
@NotNull Set<Guid> hosts, boolean readOnly) {
this.id = id;
this.name = name;
this.vms = vms;
this.hosts = hosts;
this.readOnly = readOnly;
}
/* The only business key for Label is the ID. Everything else can be changed
without any identity change.
*/
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Label label = (Label) o;
return Objects.equals(getId(), label.getId());
}
/* The only business key for Label is the ID. Everything else can be changed
without any identity change.
*/
@Override
public int hashCode() {
return Objects.hash(getId());
}
/* Setters are present for Java Bean, serialization and GWT compatibility.
Use the builder for preparing a new object and the domain methods (add/remove)
to do modifications please.
*/
public void setVms(Set<Guid> vms) {
this.vms = vms;
}
public void setHosts(Set<Guid> hosts) {
this.hosts = hosts;
}
}