private OverthereFile createConnectionTemporaryDirectory() {
OverthereFile temporaryDirectory = getFile(temporaryDirectoryPath);
Random r = new Random();
DateFormat dateFormat = new SimpleDateFormat("yyyyMMdd'T'HHmmssSSS");
String prefix = "overthere-" + dateFormat.format(new Date());
String infix = "";
String suffix = ".tmp";
for (int i = 0; i < temporaryFileCreationRetries; i++) {
OverthereFile tempDir = getFileForTempFile(temporaryDirectory, prefix + infix + suffix);
if (!tempDir.exists()) {
tempDir.mkdir();
logger.info("Created connection temporary directory {}", tempDir);
return tempDir;
}
infix = "-" + Long.toString(Math.abs(r.nextLong()));
}
throw new RuntimeIOException("Cannot create connection temporary directory on " + this);
}
/**
* Creates a reference to a temporary file on the host. This file has a unique name and will be
* automatically removed when this connection is closed. <b>N.B.:</b> The file is not actually
* created until a put method is invoked.
*
* @param prefix the prefix string to be used in generating the file's name; must be at least
* three characters long
* @param suffix the suffix string to be used in generating the file's name; may be <code>null
* </code>, in which case the suffix ".tmp" will be used
* @return a reference to the temporary file on the host
*/
@Override
public final OverthereFile getTempFile(String prefix, String suffix) throws RuntimeIOException {
if (prefix == null) throw new NullPointerException("prefix is null");
if (suffix == null) {
suffix = ".tmp";
}
Random r = new Random();
String infix = "";
for (int i = 0; i < temporaryFileCreationRetries; i++) {
OverthereFile f =
getFileForTempFile(getConnectionTemporaryDirectory(), prefix + infix + suffix);
if (!f.exists()) {
logger.debug("Created temporary file {}", f);
return f;
}
infix = "-" + Long.toString(Math.abs(r.nextLong()));
}
throw new RuntimeIOException("Cannot generate a unique temporary file name on " + this);
}