/**
* Uncompress a file to a temporary file.
*
* @param context Step context
* @param file file to uncompress
* @return the path to the uncompressed file
* @throws IOException if an error occurs while creating the uncompressed file
*/
private File uncompressFile(final TaskContext context, final DataFile file) throws IOException {
checkNotNull(file, "file argument cannot be null");
final DataFile realFile;
final DataProtocol protocol = file.getProtocol();
// Get the underlying file if the file protocol is a storage protocol
if (protocol instanceof StorageDataProtocol) {
realFile = ((StorageDataProtocol) protocol).getUnderLyingData(file);
} else {
realFile = file;
}
final File outputFile =
Files.createTempFile(
context.getLocalTempDirectory().toPath(),
MODULE_NAME + "-",
realFile.getExtension())
.toFile();
context.getLogger().fine("Uncompress/copy " + realFile + " to " + outputFile);
DataFiles.copy(realFile, new DataFile(outputFile));
return outputFile;
}
