| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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 org.apache.geode.kafka.converter; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.kafka.connect.data.Schema; |
| import org.apache.kafka.connect.data.SchemaAndValue; |
| import org.apache.kafka.connect.storage.Converter; |
| |
| import org.apache.geode.pdx.JSONFormatter; |
| import org.apache.geode.pdx.PdxInstance; |
| |
| public class JsonPdxConverter implements Converter { |
| public static final String JSON_TYPE_ANNOTATION = "\"@type\""; |
| // Default value = false |
| public static final String ADD_TYPE_ANNOTATION_TO_JSON = "add-type-annotation-to-json"; |
| final private Map<String, String> internalConfig = new HashMap<>(); |
| |
| @Override |
| public void configure(Map<String, ?> configs, boolean isKey) { |
| if (configs != null) { |
| configs.forEach((key, value) -> internalConfig.put(key, (String) value)); |
| } |
| } |
| |
| @Override |
| public byte[] fromConnectData(String topic, Schema schema, Object value) { |
| PdxInstance pdxInstanceValue = (PdxInstance) value; |
| byte[] jsonBytes = getJsonBytes(pdxInstanceValue); |
| if (!shouldAddTypeAnnotation()) { |
| return jsonBytes; |
| } |
| String jsonString = new String(jsonBytes); |
| if (!jsonString.contains(JSON_TYPE_ANNOTATION)) { |
| jsonString = jsonString.replaceFirst("\\{", |
| "{" + JSON_TYPE_ANNOTATION + " : \"" + pdxInstanceValue.getClassName() + "\","); |
| } |
| return jsonString.getBytes(); |
| } |
| |
| @Override |
| public SchemaAndValue toConnectData(String topic, byte[] value) { |
| return new SchemaAndValue(null, JSONFormatter.fromJSON(value)); |
| } |
| |
| byte[] getJsonBytes(PdxInstance pdxInstanceValue) { |
| return JSONFormatter.toJSONByteArray(pdxInstanceValue); |
| } |
| |
| boolean shouldAddTypeAnnotation() { |
| return Boolean.parseBoolean(internalConfig.get(ADD_TYPE_ANNOTATION_TO_JSON)); |
| } |
| |
| public Map<String, String> getInternalConfig() { |
| return internalConfig; |
| } |
| } |