public static void deIdentifyWithCryptHashTransformation()

in dlp/snippets/src/main/java/dlp/snippets/DeIdentifyTableWithMultipleCryptoHash.java [96:206]
79 lines of code
1 McCabe index (conditional complexity)

  public static void deIdentifyWithCryptHashTransformation(
      String projectId, Table tableToDeIdentify, String transientKeyName1, String transientKeyName2)
      throws IOException {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the "close" method on the client to safely clean up any remaining background resources.
    try (DlpServiceClient dlp = DlpServiceClient.create()) {
      // Specify what content you want the service to DeIdentify
      ContentItem contentItem = ContentItem.newBuilder().setTable(tableToDeIdentify).build();

      // Specify the type of info the inspection will look for.
      // See https://cloud.google.com/dlp/docs/infotypes-reference for complete list of info types
      List<InfoType> infoTypes =
          Stream.of("PHONE_NUMBER", "EMAIL_ADDRESS")
              .map(it -> InfoType.newBuilder().setName(it).build())
              .collect(Collectors.toList());

      InspectConfig inspectConfig = InspectConfig.newBuilder()
              .addAllInfoTypes(infoTypes)
              .build();

      // Specify the transient key which will encrypt the data.
      TransientCryptoKey transientCryptoKey = TransientCryptoKey.newBuilder()
              .setName(transientKeyName1)
              .build();
      TransientCryptoKey transientCryptoKey2 = TransientCryptoKey.newBuilder()
              .setName(transientKeyName2)
              .build();

      CryptoKey cryptoKey = CryptoKey.newBuilder()
              .setTransient(transientCryptoKey)
              .build();

      CryptoKey cryptoKey2 = CryptoKey.newBuilder()
              .setTransient(transientCryptoKey2)
              .build();

      CryptoHashConfig cryptoHashConfig = CryptoHashConfig.newBuilder()
                  .setCryptoKey(cryptoKey)
                  .build();

      CryptoHashConfig cryptoHashConfig2 = CryptoHashConfig.newBuilder()
              .setCryptoKey(cryptoKey2)
              .build();

      // Define type of de-identification as cryptographic hash transformation.
      PrimitiveTransformation primitiveTransformation = PrimitiveTransformation.newBuilder()
              .setCryptoHashConfig(cryptoHashConfig)
              .build();

      PrimitiveTransformation primitiveTransformation2 = PrimitiveTransformation.newBuilder()
              .setCryptoHashConfig(cryptoHashConfig2)
              .build();

      InfoTypeTransformations.InfoTypeTransformation infoTypeTransformation =
          InfoTypeTransformations.InfoTypeTransformation.newBuilder()
              .setPrimitiveTransformation(primitiveTransformation2)
              .addAllInfoTypes(infoTypes)
              .build();

      InfoTypeTransformations transformations =
          InfoTypeTransformations.newBuilder().addTransformations(infoTypeTransformation).build();

      // Specify fields to be de-identified.
      List<FieldId> fieldIds =
          Stream.of("userid")
              .map(id -> FieldId.newBuilder().setName(id).build())
              .collect(Collectors.toList());

      List<FieldId> fieldIds1 =
          Stream.of("comments")
              .map(id -> FieldId.newBuilder().setName(id).build())
              .collect(Collectors.toList());

      List<FieldTransformation> fieldTransformations = new ArrayList<>();
      fieldTransformations.add(
          FieldTransformation.newBuilder()
              .addAllFields(fieldIds)
              .setPrimitiveTransformation(primitiveTransformation)
              .build());
      fieldTransformations.add(
          FieldTransformation.newBuilder()
              .addAllFields(fieldIds1)
              .setInfoTypeTransformations(transformations)
              .build());

      RecordTransformations recordTransformations = RecordTransformations.newBuilder()
              .addAllFieldTransformations(fieldTransformations)
              .build();

      // Specify the config for the de-identify request
      DeidentifyConfig deidentifyConfig = DeidentifyConfig.newBuilder()
              .setRecordTransformations(recordTransformations)
              .build();

      // Combine configurations into a request for the service.
      DeidentifyContentRequest request =
          DeidentifyContentRequest.newBuilder()
              .setParent(LocationName.of(projectId, "global").toString())
              .setItem(contentItem)
              .setInspectConfig(inspectConfig)
              .setDeidentifyConfig(deidentifyConfig)
              .build();

      // Send the request and receive response from the service.
      DeidentifyContentResponse response = dlp.deidentifyContent(request);

      // Print the results.
      System.out.println("Table after de-identification: " + response.getItem().getTable());
    }
  }