2 * Copyright (C) 2016 ZTE, Inc. and others. All rights reserved. (ZTE)
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.openo.msb.wrapper.consul.util;
19 import com.fasterxml.jackson.core.JsonParser;
20 import com.fasterxml.jackson.databind.DeserializationContext;
21 import com.fasterxml.jackson.databind.JsonDeserializer;
22 import com.google.common.base.Optional;
23 import com.google.common.io.BaseEncoding;
24 import org.apache.commons.lang3.StringUtils;
26 import java.io.IOException;
29 * For use with JSON fields that Consul Base 64 encodes.
31 public class Base64EncodingDeserializer extends JsonDeserializer<Optional<String>> {
37 public Optional<String> deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
38 String value = p.getValueAsString();
40 if (StringUtils.isNotEmpty(value)) {
41 return Optional.of(new String(BaseEncoding.base64().decode(value)));
43 return Optional.absent();