gerrit.onap Code Review - sdc/sdc-workflow-designer.git/blob

   1 /**\r
   2  * Copyright (c) 2017 ZTE Corporation.\r
   3  * All rights reserved. This program and the accompanying materials\r
   4  * are made available under the terms of the Eclipse Public License v1.0\r
   5  * and the Apache License 2.0 which both accompany this distribution,\r
   6  * and are available at http://www.eclipse.org/legal/epl-v10.html\r
   7  * and http://www.apache.org/licenses/LICENSE-2.0\r
   8  *\r
   9  * Contributors:\r
  10  *     ZTE - initial API and implementation and/or initial documentation\r
  11  */\r
  12 package org.onap.sdc.workflowdesigner.parser;\r
  13 \r
  14 import java.io.IOException;\r
  15 import java.net.MalformedURLException;\r
  16 import java.net.URI;\r
  17 import java.util.ArrayList;\r
  18 import java.util.Iterator;\r
  19 import java.util.List;\r
  20 \r
  21 import org.onap.sdc.workflowdesigner.model.Element;\r
  22 import org.onap.sdc.workflowdesigner.model.Process;\r
  23 import org.onap.sdc.workflowdesigner.model.SequenceFlow;\r
  24 import org.slf4j.Logger;\r
  25 import org.slf4j.LoggerFactory;\r
  26 \r
  27 import com.fasterxml.jackson.core.JsonParseException;\r
  28 import com.fasterxml.jackson.databind.DeserializationFeature;\r
  29 import com.fasterxml.jackson.databind.JsonMappingException;\r
  30 import com.fasterxml.jackson.databind.JsonNode;\r
  31 import com.fasterxml.jackson.databind.ObjectMapper;\r
  32 import com.fasterxml.jackson.databind.SerializationFeature;\r
  33 \r
  34 public class Bpmn4ToscaJsonParser {\r
  35 \r
  36         private static Logger log = LoggerFactory.getLogger(Bpmn4ToscaJsonParser.class);\r
  37         \r
  38         private static ObjectMapper MAPPER = new ObjectMapper();\r
  39         \r
  40         static {\r
  41                 MAPPER.enable(SerializationFeature.INDENT_OUTPUT);\r
  42                 MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);\r
  43         }\r
  44         \r
  45         public Process parse(String processName, URI jsonFileUrl) throws JsonParseException, JsonMappingException, MalformedURLException, IOException {\r
  46                 Process process = new Process(processName);\r
  47 \r
  48                 JsonNode rootNode = MAPPER.readValue(jsonFileUrl.toURL(), JsonNode.class);\r
  49 \r
  50                 log.debug("Creating Process models...");\r
  51                 JsonNode nodes = rootNode.get("nodes");\r
  52                 if(nodes == null) {\r
  53                         return process;\r
  54                 }\r
  55                 \r
  56                 Iterator<JsonNode> iter = nodes.iterator();\r
  57                 while (iter.hasNext()) {\r
  58                         JsonNode jsonNode = (JsonNode) iter.next();\r
  59 \r
  60                         // get element\r
  61                         Element element = createElementFromJson(jsonNode);\r
  62                         process.getElementList().add(element);\r
  63                         \r
  64                         // get sequence flows \r
  65             List<SequenceFlow> flowList = getSequenceFlows(jsonNode);\r
  66             process.getSequenceFlowList().addAll(flowList);\r
  67                 }\r
  68 \r
  69                 return process;\r
  70 \r
  71         }\r
  72         \r
  73         private List<SequenceFlow> getSequenceFlows(JsonNode jsonNode) {\r
  74         List<SequenceFlow> flowList = new ArrayList<SequenceFlow>();\r
  75         JsonNode sequenceFlowNodes = jsonNode.get("sequenceFlows");\r
  76         \r
  77         Iterator<JsonNode> iter = sequenceFlowNodes.iterator();\r
  78         while (iter.hasNext()) {\r
  79             JsonNode connectionEntry = (JsonNode) iter.next();\r
  80             String sourceRef = getValueFromJsonNode(connectionEntry, "sourceRef");\r
  81             String targetRef = getValueFromJsonNode(connectionEntry, "targetRef");\r
  82             String condition = getValueFromJsonNode(connectionEntry, "condition");\r
  83             SequenceFlow flow = new SequenceFlow();\r
  84             flow.setId(sourceRef + targetRef);\r
  85             flow.setSourceRef(sourceRef);\r
  86             flow.setTargetRef(targetRef);\r
  87             flow.setCondition(condition);\r
  88             flowList.add(flow);\r
  89         }\r
  90         \r
  91         return flowList;\r
  92     }\r
  93         \r
  94         private String getValueFromJsonNode(JsonNode jsonNode, String key) {\r
  95         return jsonNode.get(key) == null ? null : jsonNode.get(key).asText();\r
  96     }\r
  97         \r
  98         protected Element createElementFromJson(JsonNode jsonNode) throws JsonParseException, JsonMappingException, IOException {\r
  99                 String jsonObject = jsonNode.toString();\r
 100                 return MAPPER.readValue(jsonObject, Element.class);\r
 101         }\r
 102         \r
 103 }\r