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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.hosted.provision.node.filter;
import com.yahoo.text.StringUtilities;
import com.yahoo.vespa.hosted.provision.Node;
import java.util.EnumSet;
import java.util.Objects;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;
/**
* A filter for nodes, matching by state. This should be the top-most filter so that the node-repository can determine
* which node states to read before testing additional filters.
*
* @author mpolden
*/
public class NodeFilter implements Predicate<Node> {
private final Set<Node.State> states;
private final Predicate<Node> filter;
private NodeFilter(Set<Node.State> states, Predicate<Node> filter) {
this.states = Objects.requireNonNull(states);
this.filter = Objects.requireNonNull(filter);
}
@Override
public boolean test(Node node) {
return states.contains(node.state()) && filter.test(node);
}
/** The node states to match */
public Set<Node.State> states() {
return states;
}
/** Returns a copy of this that matches with given filter */
public NodeFilter matching(Predicate<Node> filter) {
return new NodeFilter(states, filter);
}
/** Returns a node filter which matches a comma or space-separated list of states */
public static NodeFilter in(String states, boolean includeDeprovisioned) {
if (states == null) {
return NodeFilter.in(includeDeprovisioned
? EnumSet.allOf(Node.State.class)
: EnumSet.complementOf(EnumSet.of(Node.State.deprovisioned)));
}
return NodeFilter.in(StringUtilities.split(states).stream()
.map(Node.State::valueOf)
.collect(Collectors.toSet()));
}
/** Returns a node filter matching given states */
public static NodeFilter in(Set<Node.State> states) {
return new NodeFilter(states, (ignored) -> true);
}
}
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