subprojects/s4-tools/src/main/java/org/apache/s4/tools/FileExistsValidator.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.s4.tools;

import java.io.File;

import com.beust.jcommander.IParameterValidator;
import com.beust.jcommander.ParameterException;

public class FileExistsValidator implements IParameterValidator {

    @Override
    public void validate(String name, String value) throws ParameterException {
        if (!new File(value).exists()) {
            throw new ParameterException("File with path [" + value + "] specified in [" + name + "] does not exist");
        }

    }

}