| /* |
| * 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.camel.kamelets.utils.transform; |
| |
| import com.fasterxml.jackson.core.type.TypeReference; |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.ExchangeProperty; |
| import org.apache.camel.InvalidPayloadException; |
| import org.apache.camel.util.ObjectHelper; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| public class ReplaceField { |
| |
| public JsonNode process(@ExchangeProperty("enabled") String enabled, @ExchangeProperty("disabled") String disabled, @ExchangeProperty("renames") String renames,Exchange ex) throws InvalidPayloadException { |
| ObjectMapper mapper = new ObjectMapper(); |
| List<String> enabledFields = new ArrayList<>(); |
| List<String> disabledFields = new ArrayList<>(); |
| List<String> renameFields = new ArrayList<>(); |
| JsonNode jsonNodeBody = ex.getMessage().getBody(JsonNode.class); |
| Map<Object, Object> body = mapper.convertValue(jsonNodeBody, new TypeReference<Map<Object, Object>>(){}); |
| if (ObjectHelper.isNotEmpty(enabled)) { |
| enabledFields = Arrays.stream(enabled.split(",")).collect(Collectors.toList()); |
| } |
| if (ObjectHelper.isNotEmpty(disabled)) { |
| disabledFields = Arrays.stream(disabled.split(",")).collect(Collectors.toList()); |
| } |
| if (ObjectHelper.isNotEmpty(disabled)) { |
| renameFields = Arrays.stream(renames.split(",")).collect(Collectors.toList()); |
| } |
| |
| Map<String, String> renamingMap = parseNames(renameFields); |
| Map<Object, Object> updatedBody = new HashMap<>(); |
| for (Map.Entry entry: |
| body.entrySet()) { |
| final String fieldName = (String) entry.getKey(); |
| if (filterNames(fieldName, enabledFields, disabledFields)) { |
| final Object fieldValue = entry.getValue(); |
| updatedBody.put(renameOptional(fieldName, renamingMap), fieldValue); |
| } |
| } |
| if (!updatedBody.isEmpty()) { |
| return mapper.valueToTree(updatedBody); |
| } else { |
| return mapper.valueToTree(body); |
| } |
| } |
| |
| boolean filterNames(String fieldName, List<String> enabledFields, List<String> disabledFields) { |
| return !disabledFields.contains(fieldName) && (enabledFields.isEmpty() || enabledFields.contains(fieldName)); |
| } |
| |
| static Map<String, String> parseNames(List<String> mappings) { |
| final Map<String, String> m = new HashMap<>(); |
| for (String mapping : mappings) { |
| final String[] parts = mapping.split(":"); |
| m.put(parts[0], parts[1]); |
| } |
| return m; |
| } |
| |
| String renameOptional(String fieldName, Map<String, String> renames) { |
| final String mapping = renames.get(fieldName); |
| return mapping == null ? fieldName : mapping; |
| } |
| |
| } |