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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.provision.zone;
/**
* A ZoneId list which can be filtered in various ways; elements can be accessed after at least one filter.
*
* The methods here return instances of {@link ZoneList}, which extends ZoneFilter, but with accessors and additional filters.
* This forces the developer to consider which of the filters in this class to apply, prior to accessing any zones.
* Note: Do not add further filters, as this is only meant for the levels of configuration of the zone, not other properties.
*
* @author jonmv
*/
public interface ZoneFilter {
/** Negates the next filter. */
ZoneFilter not();
/** All zones defined in code, including those not yet set up. */
ZoneList all();
/** Zones where config servers are up and running. */
ZoneList reachable();
/** Zones which are upgraded by the controller. */
ZoneList controllerUpgraded();
/** Zones for use by tenants. */
ZoneList publiclyVisible();
}
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