config/src/main/java/org/apache/tuweni/config/PropertyValidators.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.tuweni.config;

import static org.apache.tuweni.config.ConfigurationErrors.noErrors;
import static org.apache.tuweni.config.ConfigurationErrors.singleError;

final class PropertyValidators {
  private PropertyValidators() {}

  static final PropertyValidator<Object> IS_PRESENT = (key, position, value) -> {
    if (value == null) {
      return singleError(position, "Required property '" + key + "' is missing");
    }
    return noErrors();
  };
}