| /* |
| * 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.cassandra.spark.utils; |
| |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.Comparator; |
| import java.util.function.Consumer; |
| import java.util.stream.Stream; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.jetbrains.annotations.Nullable; |
| |
| public final class IOUtils |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(IOUtils.class); |
| |
| public static final int DEFAULT_CDC_BUFFER_SIZE = 4096; |
| |
| private IOUtils() |
| { |
| throw new IllegalStateException(getClass() + " is static utility class and shall not be instantiated"); |
| } |
| |
| public static void closeQuietly(@Nullable AutoCloseable closeable) |
| { |
| if (closeable != null) |
| { |
| try |
| { |
| closeable.close(); |
| } |
| catch (Throwable throwable) |
| { |
| LOGGER.warn("Exception closing {}", closeable.getClass().getName(), throwable); |
| } |
| } |
| } |
| |
| public static boolean isNotEmpty(Path path) |
| { |
| return size(path) > 0; |
| } |
| |
| public static long size(Path path) |
| { |
| try |
| { |
| return Files.size(path); |
| } |
| catch (IOException exception) |
| { |
| throw new RuntimeException(exception); |
| } |
| } |
| |
| public static void clearDirectory(Path path) |
| { |
| clearDirectory(path, log -> { }); |
| } |
| |
| public static void clearDirectory(Path path, Consumer<Path> logger) |
| { |
| try (Stream<Path> walker = Files.walk(path)) |
| { |
| walker.sorted(Comparator.reverseOrder()) |
| .filter(Files::isRegularFile) |
| .forEach(file -> { |
| try |
| { |
| logger.accept(file); |
| Files.delete(file); |
| } |
| catch (IOException exception) |
| { |
| throw new RuntimeException(exception); |
| } |
| }); |
| } |
| catch (IOException exception) |
| { |
| throw new RuntimeException(exception); |
| } |
| } |
| } |