2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
21 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
22 * ============LICENSE_END=========================================================
25 package org.onap.sdnc.config.generator.tool;
27 import com.att.eelf.configuration.EELFLogger;
28 import com.att.eelf.configuration.EELFManager;
29 import com.fasterxml.jackson.databind.JsonNode;
30 import com.fasterxml.jackson.databind.ObjectMapper;
31 import java.io.IOException;
32 import java.io.StringWriter;
33 import java.util.Iterator;
35 import java.util.Map.Entry;
36 import org.apache.commons.lang3.StringUtils;
37 import org.apache.velocity.Template;
38 import org.apache.velocity.VelocityContext;
39 import org.apache.velocity.app.Velocity;
40 import org.apache.velocity.app.VelocityEngine;
41 import org.apache.velocity.runtime.RuntimeConstants;
42 import org.apache.velocity.runtime.resource.loader.StringResourceLoader;
43 import org.apache.velocity.runtime.resource.util.StringResourceRepository;
44 import org.onap.sdnc.config.generator.ConfigGeneratorConstant;
46 public class MergeTool {
48 private MergeTool() {}
50 private static final EELFLogger log = EELFManager.getInstance().getLogger(MergeTool.class);
52 public static String mergeMap2TemplateData(String template, Map<String, String> dataMap) {
53 log.info("MergeMap2TemplateData Template :" + template + " Maps :" + dataMap);
54 StringWriter writer = new StringWriter();
55 VelocityEngine ve = new VelocityEngine();
56 ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "string");
57 ve.addProperty("string.resource.loader.class", StringResourceLoader.class.getName());
58 ve.addProperty("string.resource.loader.repository.static", "false");
61 StringResourceRepository repo = (StringResourceRepository) ve
62 .getApplicationAttribute(StringResourceLoader.REPOSITORY_NAME_DEFAULT);
63 repo.putStringResource("TemplateResource", template);
65 Template t = ve.getTemplate("TemplateResource");
66 VelocityContext context = new VelocityContext();
67 for (Entry<String, String> entry : dataMap.entrySet()) {
68 context.put(entry.getKey(), entry.getValue());
70 t.merge(context, writer);
71 return writer.toString();
74 public static String mergeJson2TemplateData(String template, String jsonData,
75 String templateType, String doPrettyOutput) throws IOException {
77 String mergedData = template;
78 if (StringUtils.isNotBlank(template) && StringUtils.isNotBlank(jsonData)) {
81 ObjectMapper mapper = new ObjectMapper();
82 CustomJsonNodeFactory f = new CustomJsonNodeFactory();
83 mapper.setNodeFactory(f);
85 JsonNode jsonObj = mapper.readValue(jsonData, JsonNode.class);
87 VelocityContext context = new VelocityContext();
88 Iterator<String> ii = jsonObj.fieldNames();
89 while (ii.hasNext()) {
90 String key = ii.next();
91 context.put(key, jsonObj.get(key));
94 StringWriter writer = new StringWriter();
95 Velocity.evaluate(context, writer, "TemplateData", template);
97 mergedData = writer.toString();
99 if (prettyPrint(templateType, doPrettyOutput)) {
106 private static boolean isJsonOrXml(String templateType) {
107 return ConfigGeneratorConstant.DATA_TYPE_JSON.equalsIgnoreCase(templateType)
108 || ConfigGeneratorConstant.DATA_TYPE_XML.equalsIgnoreCase(templateType);
111 private static boolean prettyPrint(String templateType, String doPrettyOutput) {
112 return StringUtils.isNotBlank(templateType) && StringUtils.isNotBlank(doPrettyOutput)
113 && ConfigGeneratorConstant.Y.equalsIgnoreCase(doPrettyOutput) && isJsonOrXml(templateType);