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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;
import java.util.Set;
import java.util.stream.Collectors;
/**
* A deployment may have a list of tags associated with it. Config files may have variants for these tags similar
* to how they may have variants for instance and zone.
*
* @author bratseth
*/
public class Tags {
private final Set<String> tags;
public Tags(Set<String> tags) {
this.tags = Set.copyOf(tags);
}
public boolean contains(String tag) {
return tags.contains(tag);
}
public boolean intersects(Tags other) {
return this.tags.stream().anyMatch(other::contains);
}
public boolean isEmpty() { return tags.isEmpty(); }
public boolean containsAll(Tags other) { return tags.containsAll(other.tags); }
/** Returns this as a space-separated string which can be used to recreate this by calling fromString(). */
public String asString() {
return tags.stream().sorted().collect(Collectors.joining(" "));
}
@Override
public String toString() {
return asString();
}
@Override
public boolean equals(Object other) {
if (other == this) return true;
if (other == null || other.getClass() != getClass()) return false;
return tags.equals(((Tags)other).tags);
}
@Override
public int hashCode() {
return tags.hashCode();
}
public static Tags empty() { return new Tags(Set.of()); }
/**
* Creates this from a space-separated string or null. */
public static Tags fromString(String tagsString) {
if (tagsString == null || tagsString.isBlank()) return empty();
return new Tags(Set.of(tagsString.trim().split(" +")));
}
}
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