/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#getInputStream(com.continuent.tungsten.common.file.FilePath)
*/
public FileInputStream getInputStream(FilePath path) throws FileIOException {
try {
File f = new File(path.toString());
return new FileInputStream(f);
} catch (IOException e) {
throw new FileIOException("Unable to read data from file: file=" + path.toString(), e);
}
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#getOutputStream(com.continuent.tungsten.common.file.FilePath)
*/
public FileOutputStream getOutputStream(FilePath path) throws FileIOException {
try {
File f = new File(path.toString());
return (new FileOutputStream(f));
} catch (IOException e) {
throw new FileIOException("Unable to write data to file: file=" + path.toString(), e);
}
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#write(com.continuent.tungsten.common.file.FilePath,
* java.lang.String, java.lang.String, boolean)
*/
@Override
public void write(FilePath path, String value, String charset, boolean fsync)
throws FileIOException {
// Write the value and flush to storage. This overwrites any
// previous version.
FileOutputStream fos = null;
try {
fos = getOutputStream(path);
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fos, charset));
bw.write(value);
bw.flush();
if (fsync) {
fos.getFD().sync();
}
} catch (IOException e) {
throw new FileIOException(
"Unable to write data to file: file="
+ path.toString()
+ " value="
+ safeSynopsis(value, 20),
e);
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
}
}
}
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#list(com.continuent.tungsten.common.file.FilePath,
* java.lang.String)
*/
@Override
public String[] list(FilePath path, String prefix) {
// Children can only exist on directories.
if (isDirectory(path)) {
File dir = new File(path.toString());
String[] seqnoFileNames = dir.list(new LocalFilenameFilter(prefix));
return seqnoFileNames;
} else {
return new String[0];
}
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#delete(com.continuent.tungsten.common.file.FilePath,
* boolean)
*/
@Override
public boolean delete(FilePath path, boolean recursive) {
// If the node does not exist, return immediately.
if (!exists(path)) return true;
// Try to delete children if this is recursive. Otherwise,
// we cannot continuent and must return.
if (isDirectory(path)) {
for (String child : list(path)) {
if (recursive) {
boolean deleted = delete(new FilePath(path, child), recursive);
if (!deleted) return false;
} else return false;
}
}
// Delete the path for which we were called.
File fileToDelete = new File(path.toString());
return fileToDelete.delete();
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#read(com.continuent.tungsten.common.file.FilePath,
* java.lang.String)
*/
@Override
public String read(FilePath path, String charset) throws FileIOException {
// Read from storage.
FileInputStream fos = null;
try {
fos = getInputStream(path);
BufferedReader bf = new BufferedReader(new InputStreamReader(fos, charset));
StringBuffer buf = new StringBuffer();
int nextChar = 0;
while ((nextChar = bf.read()) > -1) {
buf.append((char) nextChar);
}
return buf.toString();
} catch (IOException e) {
throw new FileIOException("Unable to read data from file: file=" + path.toString(), e);
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
}
}
}
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#readable(com.continuent.tungsten.common.file.FilePath)
*/
@Override
public boolean readable(FilePath path) {
return new File(path.toString()).canRead();
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#writable(com.continuent.tungsten.common.file.FilePath)
*/
@Override
public boolean writable(FilePath path) {
return new File(path.toString()).canWrite();
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#isDirectory(com.continuent.tungsten.common.file.FilePath)
*/
@Override
public boolean isDirectory(FilePath path) {
return new File(path.toString()).isDirectory();
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#exists(com.continuent.tungsten.common.file.FilePath)
*/
@Override
public boolean exists(FilePath path) {
return new File(path.toString()).exists();
}
/**
* {@inheritDoc}
*
* @see
* com.continuent.tungsten.common.file.FileIO#mkdirs(com.continuent.tungsten.common.file.FilePath)
*/
@Override
public boolean mkdirs(FilePath path) {
return new File(path.toString()).mkdirs();
}