2 * Copyright © 2017-2018 AT&T Intellectual Property.
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3 * Modifications Copyright © 2018 IBM.
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5 * Licensed under the Apache License, Version 2.0 (the "License");
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6 * you may not use this file except in compliance with the License.
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7 * You may obtain a copy of the License at
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9 * http://www.apache.org/licenses/LICENSE-2.0
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11 * Unless required by applicable law or agreed to in writing, software
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12 * distributed under the License is distributed on an "AS IS" BASIS,
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13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 * See the License for the specific language governing permissions and
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15 * limitations under the License.
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18 package org.onap.ccsdk.features.model.utils;
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20 import java.io.IOException;
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21 import java.util.HashMap;
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22 import java.util.Iterator;
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23 import java.util.Map;
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24 import org.apache.commons.lang3.StringUtils;
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25 import org.onap.ccsdk.features.model.ConfigModelConstant;
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26 import org.onap.ccsdk.features.model.data.PropertyDefinition;
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27 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
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28 import com.att.eelf.configuration.EELFLogger;
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29 import com.att.eelf.configuration.EELFManager;
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30 import com.fasterxml.jackson.databind.JsonNode;
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31 import com.fasterxml.jackson.databind.ObjectMapper;
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32 import com.fasterxml.jackson.databind.node.ObjectNode;
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34 public class ExpressionUtils {
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35 private static EELFLogger logger = EELFManager.getInstance().getLogger(ExpressionUtils.class);
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37 private final SvcLogicContext context;
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38 private final Map<String, String> inParams;
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40 public ExpressionUtils(final SvcLogicContext context, final Map<String, String> inParams) {
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41 this.context = context;
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42 this.inParams = inParams;
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45 public void populatePropertAssignmentsWithPrefix(String prefix, Map<String, PropertyDefinition> typeProperties,
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46 Map<String, Object> templateProperties) throws IOException {
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47 if (typeProperties != null && templateProperties != null) {
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48 ObjectMapper mapper = new ObjectMapper();
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49 String templatejsonContent = mapper.writeValueAsString(templateProperties);
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50 logger.debug("Expression inputs ({}).", templatejsonContent);
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52 JsonNode rootArray = mapper.readTree(templatejsonContent);
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53 processJsonExpression(rootArray);
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54 if (rootArray != null) {
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55 Map<String, String> prefixParams = new HashMap<>();
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56 TransformationUtils.convertJson2RootProperties(prefixParams, rootArray);
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57 logger.info("Resolved inputs ({}).", rootArray);
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58 prefixParams.forEach((key, value) -> {
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59 this.inParams.put(prefix + "." + key, value);
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65 public void populatePropertAssignments(Map<String, PropertyDefinition> typeProperties,
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66 Map<String, Object> templateProperties) throws IOException {
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67 if (typeProperties != null && templateProperties != null) {
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68 ObjectMapper mapper = new ObjectMapper();
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69 String templatejsonContent = mapper.writeValueAsString(templateProperties);
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70 logger.info("Expression inputs ({}).", templatejsonContent);
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72 JsonNode rootArray = mapper.readTree(templatejsonContent);
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73 processJsonExpression(rootArray);
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74 TransformationUtils.convertJson2RootProperties(this.inParams, rootArray);
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75 logger.info("Resolved inputs ({}).", rootArray);
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80 public void populateOutPropertAssignments(Map<String, PropertyDefinition> typeProperties,
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81 Map<String, Object> templateProperties) throws IOException {
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82 if (typeProperties != null && templateProperties != null) {
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83 ObjectMapper mapper = new ObjectMapper();
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84 String templatejsonContent = mapper.writeValueAsString(templateProperties);
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85 logger.info("Expression outputs ({}).", templatejsonContent);
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87 JsonNode rootArray = mapper.readTree(templatejsonContent);
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88 processJsonExpression(rootArray);
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89 logger.info("Resolved outputs ({}).", rootArray);
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93 public void processJsonExpression(JsonNode rootArray) throws IOException {
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94 if (rootArray != null) {
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95 Iterator<Map.Entry<String, JsonNode>> fields = rootArray.fields();
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96 while (fields.hasNext()) {
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97 Map.Entry<String, JsonNode> entry = fields.next();
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98 processJsonNode(rootArray, entry.getKey(), entry.getValue());
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103 private void processJsonNode(JsonNode parentNode, String nodeName, JsonNode node) throws IOException {
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104 if (node == null) {
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106 } else if (node.isArray()) {
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107 String[] a = new String[node.size()];
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109 for (int i = 0; i < a.length; i++) {
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110 processJsonNode(null, null, node.get(i));
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112 } else if (node.isObject()) {
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114 Iterator<Map.Entry<String, JsonNode>> fields = node.fields();
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115 while (fields.hasNext()) {
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116 Map.Entry<String, JsonNode> entry = fields.next();
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117 processJsonNode(node, entry.getKey(), entry.getValue());
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119 } else if (node.isTextual()) {
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120 boolean expression = checkExpressionContent(node.asText());
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122 processExpressionContent(parentNode, nodeName, node);
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127 private boolean checkExpressionContent(String content) {
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128 return (StringUtils.isNotBlank(content) && (content.contains(ConfigModelConstant.EXPRESSION_GET_INPUT)
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129 || content.contains(ConfigModelConstant.EXPRESSION_GET_ATTRIBUTE)
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130 || content.contains(ConfigModelConstant.EXPRESSION_SET_VALUE)));
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133 @SuppressWarnings("squid:S3776")
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134 private void processExpressionContent(JsonNode parentNode, String nodeName, JsonNode node) throws IOException {
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136 if (node != null && StringUtils.isNotBlank(node.asText())) {
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137 String content = node.asText();
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138 ObjectMapper mapper = new ObjectMapper();
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139 Map<String, String> expressionMap = mapper.readValue(content, Map.class);
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140 boolean isExpressionNode = false;
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142 if (expressionMap != null) {
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143 String expressionValue = null;
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144 String expressionKey = null;
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146 if (expressionMap.containsKey(ConfigModelConstant.EXPRESSION_GET_INPUT)) {
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147 isExpressionNode = true;
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148 expressionKey = expressionMap.get(ConfigModelConstant.EXPRESSION_GET_INPUT);
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149 expressionValue = resolveGetInputExpression(expressionKey, context);
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150 if (expressionValue == null) {
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151 expressionValue = resolveGetInputExpression("inputs." + expressionKey + ".default", context);
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153 } else if (expressionMap.containsKey(ConfigModelConstant.EXPRESSION_GET_ATTRIBUTE)) {
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154 isExpressionNode = true;
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156 context.getAttribute(expressionMap.get(ConfigModelConstant.EXPRESSION_GET_ATTRIBUTE));
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157 } else if (expressionMap.containsKey(ConfigModelConstant.EXPRESSION_SET_VALUE)) {
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158 isExpressionNode = true;
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159 expressionKey = expressionMap.get(ConfigModelConstant.EXPRESSION_SET_VALUE);
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160 expressionValue = context.getAttribute(expressionKey);
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162 if (StringUtils.isNotBlank(expressionKey)) {
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163 context.setAttribute(expressionKey, expressionValue);
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167 if (isExpressionNode && expressionValue == null) {
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168 ((ObjectNode) parentNode).put(nodeName, "");
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170 if (StringUtils.isNotBlank(expressionValue)) {
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171 if (expressionValue.trim().startsWith("[") || expressionValue.trim().startsWith("{")) {
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172 JsonNode valueNode = mapper.readTree(expressionValue);
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173 ((ObjectNode) parentNode).put(nodeName, valueNode);
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175 ((ObjectNode) parentNode).put(nodeName, expressionValue);
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178 logger.debug("expression ({}), expression key ({}), expression Value ({})", expressionMap,
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179 expressionKey, expressionValue);
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184 private String resolveGetInputExpression(String key, final SvcLogicContext context) {
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185 if (StringUtils.isNotBlank(key) && context != null) {
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186 return context.getAttribute(key);
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