/*
* 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.nifi.controller.repository.util;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertFalse;
import java.io.File;
public class DiskUtils {
public static void deleteRecursively(final File toDelete, final int numTries) {
File unableToDelete = null;
for (int i = 0; i < numTries; i++) {
unableToDelete = attemptRecursiveDelete(toDelete);
if (unableToDelete == null) {
return;
}
try {
Thread.sleep(50L);
} catch (final Exception e) {
}
}
assertNull("Unable to delete " + unableToDelete, unableToDelete);
assertFalse("Thought that I deleted " + toDelete + " but it still exists", toDelete.exists());
}
public static void deleteRecursively(final File toDelete) {
final File unableToDelete = attemptRecursiveDelete(toDelete);
assertNull("Unable to delete " + unableToDelete, unableToDelete);
assertFalse("Thought that I deleted " + toDelete + " but it still exists", toDelete.exists());
}
private static File attemptRecursiveDelete(final File toDelete) {
if (toDelete == null || !toDelete.exists()) {
return null;
}
if (toDelete.isDirectory()) {
for (final File file : toDelete.listFiles()) {
final File unableToDelete = attemptRecursiveDelete(file);
if (unableToDelete != null) {
return unableToDelete;
}
}
}
// try to delete up to 5 times.
for (int i = 0; i < 5; i++) {
if (!toDelete.exists() || toDelete.delete()) {
return null;
}
try {
Thread.sleep(100L);
} catch (final InterruptedException e) {
}
}
return toDelete;
}
}