org.apache.beam.sdk.util.PathValidator Maven / Gradle / Ivy

/*
 * 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.beam.sdk.util;

/**
 * Interface for controlling validation of paths.
 */
public interface PathValidator {
  /**
   * Validate that a file pattern is conforming.
   *
   * @param filepattern The file pattern to verify.
   * @return The post-validation filepattern.
   */
  String validateInputFilePatternSupported(String filepattern);

  /**
   * Validate that an output file prefix is conforming.
   *
   * @param filePrefix the file prefix to verify.
   * @return The post-validation filePrefix.
   */
  String validateOutputFilePrefixSupported(String filePrefix);

  /**
   * Validate that a path is a valid path and that the path
   * is accessible.
   *
   * @param path The path to verify.
   * @return The post-validation path.
   */
  String verifyPath(String path);
}