1 files changed, 109 insertions, 0 deletions
diff --git a/appc-config/appc-config-generator/provider/src/main/java/org/onap/sdnc/config/generator/tool/MergeTool.java b/appc-config/appc-config-generator/provider/src/main/java/org/onap/sdnc/config/generator/tool/MergeTool.java
new file mode 100644
index 000000000..0958deebb
--- /dev/null
+++ b/appc-config/appc-config-generator/provider/src/main/java/org/onap/sdnc/config/generator/tool/MergeTool.java
@@ -0,0 +1,109 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property.  All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdnc.config.generator.tool;
+
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.Iterator;
+import java.util.Map;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.velocity.Template;
+import org.apache.velocity.VelocityContext;
+import org.apache.velocity.app.Velocity;
+import org.apache.velocity.app.VelocityEngine;
+import org.apache.velocity.runtime.RuntimeConstants;
+import org.apache.velocity.runtime.resource.loader.StringResourceLoader;
+import org.apache.velocity.runtime.resource.util.StringResourceRepository;
+import org.openecomp.sdnc.config.generator.ConfigGeneratorConstant;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+
+public class MergeTool {
+
+    private static final  EELFLogger log = EELFManager.getInstance().getLogger(MergeTool.class);
+
+    public static String mergeMap2TemplateData(String template, Map< String, String> dataMap ){
+        log.info("MergeMap2TemplateData Template :"+ template + " Maps :"+ dataMap);
+        StringWriter writer = new StringWriter();
+        VelocityEngine ve = new VelocityEngine();
+        ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "string");
+        ve.addProperty("string.resource.loader.class", StringResourceLoader.class.getName());
+        ve.addProperty("string.resource.loader.repository.static", "false");
+        ve.init();
+
+        StringResourceRepository repo = (StringResourceRepository)ve.getApplicationAttribute(StringResourceLoader.REPOSITORY_NAME_DEFAULT);
+        repo.putStringResource("TemplateResource", template);
+
+        Template t = ve.getTemplate("TemplateResource");
+        VelocityContext context = new VelocityContext();
+        Iterator<Map.Entry<String, String>> entries = dataMap.entrySet().iterator();
+        while (entries.hasNext())        {
+            Map.Entry<String, String> entry = entries.next();
+            context.put(entry.getKey(), entry.getValue());
+        }
+        t.merge(context, writer);
+        return writer.toString();
+    }
+
+
+    public static String mergeJson2TemplateData(String template, String jsonData, String templateType, String doPrettyOutput) throws JsonParseException, JsonMappingException, IOException{
+        String mergedData = template;
+        if( StringUtils.isNotBlank(template) && StringUtils.isNotBlank(jsonData)){    
+            Velocity.init();
+
+            ObjectMapper mapper = new ObjectMapper();        
+            CustomJsonNodeFactory f = new CustomJsonNodeFactory();        
+            mapper.setNodeFactory(f);
+
+            JsonNode jsonObj = mapper.readValue(jsonData, JsonNode.class);    
+
+            VelocityContext context = new VelocityContext();            
+            Iterator<String> ii = jsonObj.fieldNames();
+            while (ii.hasNext()) {
+                String key = ii.next();
+                context.put(key, jsonObj.get(key));
+            }            
+
+            StringWriter writer = new StringWriter();            
+            Velocity.evaluate(context, writer, "TemplateData", template);
+            writer.flush();
+            mergedData =  writer.toString();    
+
+            if(StringUtils.isNotBlank(templateType) && StringUtils.isNotBlank(doPrettyOutput)
+                    && ConfigGeneratorConstant.Y.equalsIgnoreCase(doPrettyOutput)
+                    && ( ConfigGeneratorConstant.DATA_TYPE_JSON.equalsIgnoreCase(templateType)
+                            || ConfigGeneratorConstant.DATA_TYPE_XML.equalsIgnoreCase(templateType)) ){
+                // Perform Prettying
+
+            }
+        }
+        return mergedData;
+
+    }
+
+}