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Merge pull request #24 from data-integrations/CDAP-16613-deterministi…
…c-encrypt (CDAP-16613) Deterministic encrypt
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src/main/java/io/cdap/plugin/dlp/configs/CryptoDeterministicTransformationConfig.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| /* | ||
| * Copyright © 2020 Cask Data, 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 io.cdap.plugin.dlp.configs; | ||
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|
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| import com.google.api.client.util.Strings; | ||
| import com.google.gson.Gson; | ||
| import com.google.privacy.dlp.v2.CryptoDeterministicConfig; | ||
| import com.google.privacy.dlp.v2.CryptoHashConfig; | ||
| import com.google.privacy.dlp.v2.CryptoKey; | ||
| import com.google.privacy.dlp.v2.FieldId; | ||
| import com.google.privacy.dlp.v2.InfoType; | ||
| import com.google.privacy.dlp.v2.PrimitiveTransformation; | ||
| import io.cdap.cdap.api.data.schema.Schema; | ||
| import io.cdap.cdap.etl.api.FailureCollector; | ||
|
|
||
| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.regex.Pattern; | ||
|
|
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| /** | ||
| * Implementing the DlpTransformConfig interface for the DLP {@link CryptoDeterministicConfig} | ||
| */ | ||
| public class CryptoDeterministicTransformationConfig implements DlpTransformConfig { | ||
|
|
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| private static final String INFO_TYPE_NAME_REGEX = "[a-zA-Z0-9_]{1,64}"; | ||
| private String key; | ||
| private String name; | ||
| private String wrappedKey; | ||
| private String cryptoKeyName; | ||
| private CryptoKeyHelper.KeyType keyType; | ||
| private final Schema.Type[] supportedTypes = new Schema.Type[]{Schema.Type.STRING}; | ||
| private String surrogateInfoTypeName; | ||
| private String context; | ||
| private static final Gson gson = new Gson(); | ||
|
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| @Override | ||
| public PrimitiveTransformation toPrimitiveTransform() { | ||
| CryptoKey cryptoKey = CryptoKeyHelper.createKey(keyType, name, key, cryptoKeyName, wrappedKey); | ||
| InfoType surrogateType = InfoType.newBuilder().setName(surrogateInfoTypeName).build(); | ||
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| CryptoDeterministicConfig.Builder configBuilder = CryptoDeterministicConfig.newBuilder(); | ||
| configBuilder.setCryptoKey(cryptoKey).setSurrogateInfoType(surrogateType); | ||
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| if (!Strings.isNullOrEmpty(context)) { | ||
| configBuilder.setContext(FieldId.newBuilder().setName(context).build()); | ||
| } | ||
|
|
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| return PrimitiveTransformation.newBuilder().setCryptoDeterministicConfig(configBuilder).build(); | ||
| } | ||
|
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| @Override | ||
| public void validate(FailureCollector collector, String widgetName, ErrorConfig errorConfig) { | ||
| CryptoKeyHelper.validateKey(collector, widgetName, errorConfig, keyType, name, key, cryptoKeyName, wrappedKey); | ||
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| if (Strings.isNullOrEmpty(surrogateInfoTypeName)) { | ||
| errorConfig.setNestedTransformPropertyId("surrogateInfoTypeName"); | ||
| collector.addFailure("Surrogate Type Name is a required field.", "Please provide a valid value.") | ||
| .withConfigElement(widgetName, gson.toJson(errorConfig)); | ||
| } else { | ||
| Pattern pattern = Pattern.compile(INFO_TYPE_NAME_REGEX); | ||
| boolean isValidSurrogateName = pattern.matcher(surrogateInfoTypeName).matches(); | ||
| if (!isValidSurrogateName) { | ||
| errorConfig.setNestedTransformPropertyId("surrogateInfoTypeName"); | ||
| collector.addFailure(String | ||
| .format("Value of '%s' is not valid for Surrogate Type Name", surrogateInfoTypeName), | ||
| "Name can only contain upper/lowercase letters, numbers or underscores and" + | ||
| "it must be between 1 and 64 characters long.") | ||
| .withConfigElement(widgetName, gson.toJson(errorConfig)); | ||
| } | ||
| } | ||
| } | ||
|
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| @Override | ||
| public List<Schema.Type> getSupportedTypes() { | ||
| return Arrays.asList(supportedTypes); | ||
| } | ||
| } |
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