clustercontroller-core/src/main/java/com/yahoo/vespa/clustercontroller/core/HierarchicalGroupVisiting.java


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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.clustercontroller.core;

import com.yahoo.vdslib.distribution.GroupVisitor;

public interface HierarchicalGroupVisiting {
    /** Returns true if the group contains more than one (leaf) group. */
    boolean isHierarchical();

    /**
     * Invoke the visitor for each leaf group of an implied group.  If the group is non-hierarchical
     * (flat), the visitor will not be invoked.
     */
    void visit(GroupVisitor visitor);
}