io.vlingo.reactivestreams.operator.Mapper Maven / Gradle / Ivy

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// Copyright © 2012-2020 VLINGO LABS. All rights reserved.
//
// This Source Code Form is subject to the terms of the
// Mozilla Public License, v. 2.0. If a copy of the MPL
// was not distributed with this file, You can obtain
// one at https://mozilla.org/MPL/2.0/.

package io.vlingo.reactivestreams.operator;

import java.util.function.Consumer;
import java.util.function.Function;

import io.vlingo.reactivestreams.Operator;
import io.vlingo.reactivestreams.Streams;

/**
 * Maps from {@code Sink} to {@code Source}.
 * @param  the input parameter type
 * @param  the result type
 */
public class Mapper implements Operator {
  private final Function mapper;

  public Mapper(final Function mapper) {
    this.mapper = mapper;
  }

  @Override
  public void performInto(final T value, Consumer consumer) {
    try {
      consumer.accept(mapper.apply(value));
    } catch (Exception e) {
      Streams.logger().error("Mapper failed because: " + e.getMessage(), e);
    }
  }
}