com.couchbase.client.java.encryption.databind.jackson.repackaged.EncryptedFieldSerializationModifier Maven / Gradle / Ivy

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The official Couchbase Java SDK

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/*
 * Copyright 2020 Couchbase, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.couchbase.client.java.encryption.databind.jackson.repackaged;

import com.couchbase.client.core.annotation.Stability;
import com.couchbase.client.core.deps.com.fasterxml.jackson.core.io.SerializedString;
import com.couchbase.client.core.deps.com.fasterxml.jackson.databind.BeanDescription;
import com.couchbase.client.core.deps.com.fasterxml.jackson.databind.JsonSerializer;
import com.couchbase.client.core.deps.com.fasterxml.jackson.databind.SerializationConfig;
import com.couchbase.client.core.deps.com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
import com.couchbase.client.core.deps.com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
import com.couchbase.client.core.encryption.CryptoManager;
import com.couchbase.client.java.encryption.annotation.Encrypted;

import java.util.ArrayList;
import java.util.List;

import static com.couchbase.client.java.encryption.databind.jackson.repackaged.RepackagedEncryptionModule.findAnnotation;
import static java.util.Objects.requireNonNull;

@Stability.Internal
public class EncryptedFieldSerializationModifier extends BeanSerializerModifier {
  private final CryptoManager cryptoManager;

  public EncryptedFieldSerializationModifier(CryptoManager cryptoManager) {
    this.cryptoManager = requireNonNull(cryptoManager);
  }

  @Override
  public List changeProperties(SerializationConfig config,
                                                   BeanDescription beanDesc,
                                                   List beanProperties) {
    final List result = new ArrayList<>();
    for (BeanPropertyWriter writer : beanProperties) {
      final Encrypted annotation = findAnnotation(writer, Encrypted.class);
      result.add(annotation == null ? writer : new EncryptedBeanPropertyWriter(writer, annotation));
    }
    return result;
  }

  private class EncryptedBeanPropertyWriter extends BeanPropertyWriter {
    EncryptedBeanPropertyWriter(BeanPropertyWriter original, Encrypted annotation) {
      // init to with same values as original, and mangled name
      super(original, new SerializedString(cryptoManager.mangle(original.getName())));

      final JsonSerializer