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package com.keuin.kbackupfabric.util;
import java.io.File;
import java.io.IOException;
import static org.apache.commons.io.FileUtils.forceDelete;
public class FilesystemUtil {
/**
* Get file sizes in bytes.
* @param parentDirectory path to specific file.
* @param fileName file name.
* @return bytes. If failed, return -1.
*/
public static long getFileSizeBytes(String parentDirectory, String fileName) {
long fileSize = -1;
try{
File backupZipFile = new File(parentDirectory, fileName);
fileSize = backupZipFile.length();
} catch (SecurityException ignored){
}
return fileSize;
}
public static long getFileSizeBytes(String filePath) {
long fileSize = -1;
try {
File backupZipFile = new File(filePath);
fileSize = backupZipFile.length();
} catch (SecurityException ignored) {
}
return fileSize;
}
public static boolean forceDeleteDirectory(File levelDirFile) throws IOException {
int failedCounter = 0;
final int MAX_RETRY_TIMES = 20;
IOException exception = null;
while (failedCounter < MAX_RETRY_TIMES) {
System.gc();
if (!levelDirFile.delete() && levelDirFile.exists()) {
System.gc();
try {
forceDelete(levelDirFile); // Try to force delete.
} catch (IOException e) {
exception = e;
}
}
if (!levelDirFile.exists())
break;
++failedCounter;
try {
Thread.sleep(500);
} catch (InterruptedException ignored) {
}
}
if (exception != null)
throw exception;
if (levelDirFile.exists()) {
PrintUtil.error(String.format("Cannot restore: failed to delete old level %s .", levelDirFile.getName()));
return false;
}
return true;
}
}
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