1   /*
2    * Copyright 2017 LINE Corporation
3    *
4    * LINE Corporation licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package com.linecorp.centraldogma.server.auth;
17  
18  import java.io.ByteArrayOutputStream;
19  import java.io.IOException;
20  import java.io.ObjectOutputStream;
21  import java.io.Serializable;
22  import java.util.Base64;
23  
24  import com.fasterxml.jackson.core.JsonGenerator;
25  import com.fasterxml.jackson.databind.SerializerProvider;
26  import com.fasterxml.jackson.databind.ser.std.StdSerializer;
27  
28  /**
29   * Serializes a raw session instance into a base64-encoded string.
30   */
31  public final class RawSessionJsonSerializer extends StdSerializer<Serializable> {
32  
33      private static final long serialVersionUID = -8209099521255193022L;
34  
35      /**
36       * Creates a new instance.
37       */
38      public RawSessionJsonSerializer() {
39          super(Serializable.class);
40      }
41  
42      @Override
43      public void serialize(Serializable value, JsonGenerator gen, SerializerProvider provider)
44              throws IOException {
45  
46          try (ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
47               ObjectOutputStream oos = new ObjectOutputStream(baos)) {
48              oos.writeObject(value);
49              oos.flush();
50              gen.writeString(Base64.getEncoder().encodeToString(baos.toByteArray()));
51          }
52      }
53  }