/*
 * Copyright (c) 2019, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * Licensed 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 com.fnproject.fn.runtime.coercion;

import com.fnproject.fn.api.InvocationContext;
import com.fnproject.fn.api.MethodWrapper;
import com.fnproject.fn.api.OutputCoercion;
import com.fnproject.fn.api.OutputEvent;

import java.util.Optional;

public class VoidCoercion implements OutputCoercion {
    @Override
    public Optional<OutputEvent> wrapFunctionResult(InvocationContext ctx, MethodWrapper method, Object value) {
        if (method.getReturnType().getParameterClass().equals(Void.class)) {
            return Optional.of(OutputEvent.emptyResult(OutputEvent.Status.Success));
        } else {
            return Optional.empty();
        }
    }
}

