2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * Copyright © 2017-2018 European Software Marketing Ltd.
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 * ============LICENSE_END=========================================================
21 package org.onap.aai.babel.xml.generator.data;
23 import java.util.Base64;
24 import org.apache.commons.codec.digest.DigestUtils;
26 /** Utility method class for artifact generation. */
27 public class GeneratorUtil {
30 * Private constructor to prevent instantiation
32 private GeneratorUtil() {
33 throw new UnsupportedOperationException("This static class should not be instantiated!");
37 * Decodes Base64 encode byte array input.
39 * @param input Base64 encoded byte array
40 * @return Decoded byte array
42 public static byte[] decoder(byte[] input) {
43 return input != null ? Base64.getDecoder().decode(input) : new byte[0];
47 * Encode a byte array input using Base64 encoding.
49 * @param input Input byte array to be encoded
50 * @return Base64 encoded byte array
52 public static byte[] encode(byte[] input) {
53 return input != null ? Base64.getEncoder().encode(input) : new byte[0];
57 * Calculate the checksum for a given input.
59 * @param input Byte array for which the checksum has to be calculated
60 * @return Calculated checksum of the input byte array
62 public static String checkSum(byte[] input) {
63 return input != null ? DigestUtils.md5Hex(input).toUpperCase() : null;