private void generateSaltIfNeeded(Path saltFilePath, Path secretsPath) throws Exception { FileSystem fileSystem = FileSystem.get(saltFilePath.toUri(), getConf()); if (!fileSystem.exists(saltFilePath)) { FSDataOutputStream outputStream = fileSystem.create(saltFilePath); BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream)); int numSaltsToGenerate = getNumSecrets(secretsPath); System.out.printf("Generating %d salts\n", numSaltsToGenerate); for (int i = 0; i < numSaltsToGenerate; i++) { writer.write(BCrypt.gensalt()); writer.newLine(); } writer.close(); outputStream.close(); } }