johnzon-jsonlogic/src/main/java/org/apache/johnzon/jsonlogic/spi/AsyncOperator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.johnzon.jsonlogic.spi;

import org.apache.johnzon.jsonlogic.JohnzonJsonLogic;

import javax.json.JsonValue;
import java.util.concurrent.CompletionStage;
import java.util.concurrent.ExecutionException;

@FunctionalInterface
public interface AsyncOperator extends Operator {
    @Override
    CompletionStage<JsonValue> applyStage(JohnzonJsonLogic logic, JsonValue config, JsonValue params);

    @Override
    default JsonValue apply(JohnzonJsonLogic logic, JsonValue config, JsonValue params) {
        try {
            return applyStage(logic, config, params).toCompletableFuture().get();
        } catch (final InterruptedException e) {
            Thread.currentThread().interrupt();
            return null;
        } catch (ExecutionException e) {
            final Throwable cause = e.getCause();
            if (RuntimeException.class.isInstance(cause)) {
                throw RuntimeException.class.cast(cause);
            }
            throw new IllegalStateException(cause);
        }
    }
}