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// Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.flags.json;
import com.yahoo.component.Version;
import com.yahoo.vespa.flags.FetchVector;
import com.yahoo.vespa.flags.json.wire.WireCondition;
import java.util.function.Predicate;
/**
* @author hakonhall
*/
public class RelationalCondition implements Condition {
private final RelationalPredicate relationalPredicate;
private final Predicate<String> predicate;
private final FetchVector.Dimension dimension;
public static RelationalCondition create(CreateParams params) {
if (!params.values().isEmpty()) {
throw new IllegalArgumentException(RelationalCondition.class.getSimpleName() +
" does not support the 'values' field");
}
String predicate = params.predicate().orElseThrow(() ->
new IllegalArgumentException(RelationalCondition.class.getSimpleName() +
" requires the predicate field in the condition"));
RelationalPredicate relationalPredicate = RelationalPredicate.fromWire(predicate);
switch (params.dimension()) {
case VESPA_VERSION:
final Version rightVersion = Version.fromString(relationalPredicate.rightOperand());
Predicate<String> p = (String leftString) -> {
Version leftVersion = Version.fromString(leftString);
return relationalPredicate.operator().evaluate(leftVersion, rightVersion);
};
return new RelationalCondition(relationalPredicate, p, params.dimension());
default:
throw new IllegalArgumentException(RelationalCondition.class.getSimpleName() +
" not supported for dimension " + FetchVector.Dimension.VESPA_VERSION.name());
}
}
private RelationalCondition(RelationalPredicate relationalPredicate, Predicate<String> predicate,
FetchVector.Dimension dimension) {
this.relationalPredicate = relationalPredicate;
this.predicate = predicate;
this.dimension = dimension;
}
@Override
public Type type() {
return Type.RELATIONAL;
}
@Override
public FetchVector.Dimension dimension() {
return dimension;
}
@Override
public CreateParams toCreateParams() {
return new CreateParams(dimension).withPredicate(relationalPredicate.toWire());
}
@Override
public boolean test(FetchVector fetchVector) {
return fetchVector.getValue(dimension).map(predicate::test).orElse(false);
}
@Override
public WireCondition toWire() {
var condition = new WireCondition();
condition.type = Condition.Type.RELATIONAL.toWire();
condition.dimension = DimensionHelper.toWire(dimension);
condition.predicate = relationalPredicate.toWire();
return condition;
}
}
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