sdc-workflow-designer-server/src/main/java/org/onap/sdc/workflowdesigner/resources/WorkflowModelerResource.java

   1 /**
   2  * Copyright (c) 2017-2018 ZTE Corporation.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the Apache License, Version 2.0
   5  * and the Eclipse Public License v1.0 which both accompany this distribution,
   6  * and are available at http://www.eclipse.org/legal/epl-v10.html
   7  * and http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Contributors:
  10  *     ZTE - initial API and implementation and/or initial documentation
  11  */
  12
  13 package org.onap.sdc.workflowdesigner.resources;
  14
  15 import java.io.IOException;
  16 import java.net.URI;
  17 //import java.nio.file.Paths;
  18 import java.util.List;
  19 //import java.util.UUID;
  20
  21 import javax.ws.rs.Consumes;
  22 import javax.ws.rs.GET;
  23 import javax.ws.rs.PUT;
  24 import javax.ws.rs.Path;
  25 import javax.ws.rs.PathParam;
  26 import javax.ws.rs.Produces;
  27 import javax.ws.rs.core.MediaType;
  28 import javax.ws.rs.core.Response;
  29
  30 import org.dom4j.Comment;
  31 import org.dom4j.Document;
  32 import org.dom4j.DocumentException;
  33 import org.dom4j.DocumentHelper;
  34 import org.eclipse.jetty.http.HttpStatus;
  35 //import org.onap.sdc.workflowdesigner.common.WorkflowDesignerException;
  36 //import org.onap.sdc.workflowdesigner.externalservice.sdc.SDCServiceProxy;
  37 //import org.onap.sdc.workflowdesigner.externalservice.sdc.entity.WorkflowArtifactInfo;
  38 import org.onap.sdc.workflowdesigner.model.Process;
  39 import org.onap.sdc.workflowdesigner.parser.Bpmn4ToscaJsonParser;
  40 //import org.onap.sdc.workflowdesigner.resources.entity.WorkflowInfo;
  41 import org.onap.sdc.workflowdesigner.utils.FileCommonUtils;
  42 //import org.onap.sdc.workflowdesigner.utils.JsonUtils;
  43 import org.onap.sdc.workflowdesigner.utils.RestUtils;
  44 import org.onap.sdc.workflowdesigner.writer.BpmnPlanArtefactWriter;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 import com.codahale.metrics.annotation.Timed;
  49
  50 import io.swagger.annotations.Api;
  51 import io.swagger.annotations.ApiOperation;
  52 import io.swagger.annotations.ApiParam;
  53 import io.swagger.annotations.ApiResponse;
  54 import io.swagger.annotations.ApiResponses;
  55
  56 /**
  57  * Workflow Modeler Resource.
  58  *
  59  */
  60 @Path("/models")
  61 @Api(tags = {"Workflow Modeler"})
  62 public class WorkflowModelerResource {
  63   private static final Logger logger = LoggerFactory.getLogger(WorkflowModelerResource.class);
  64
  65   private static final String WORKFLOW_JSON_TEMP_FILE_NAME = "temp_workflow.json";
  66 //  private static final String WORKFLOW_XML_TEMP_FILE_NAME = "temp_workflow.xml";
  67
  68
  69   /**
  70    *
  71    * @return Response
  72    */
  73   @Path("/{id}")
  74   @GET
  75   @Consumes(MediaType.APPLICATION_JSON)
  76   @Produces(MediaType.APPLICATION_JSON)
  77   @ApiOperation(value = "Get Model", response = String.class)
  78   @ApiResponses(value = {
  79       @ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
  80           response = String.class),
  81       @ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
  82           message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
  83       @ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "server internal error",
  84           response = String.class)})
  85   @Timed
  86   public Response getModel(@ApiParam(value = "id") @PathParam("id") String id) {
  87     try {
  88       String json = FileCommonUtils.readString(WORKFLOW_JSON_TEMP_FILE_NAME);
  89       return Response.status(Response.Status.OK).entity(json).build();
  90     } catch (IOException e) {
  91       logger.error("get workflow failed.", e);
  92       throw RestUtils.newInternalServerErrorException(e);
  93     }
  94   }
  95
  96
  97
  98   @Path("/{id}")
  99   @PUT
 100   @Consumes(MediaType.APPLICATION_JSON)
 101   @Produces(MediaType.APPLICATION_JSON)
 102   @ApiOperation(value = "Save Model", response = String.class)
 103   @ApiResponses(value = {
 104       @ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
 105           response = String.class),
 106       @ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
 107           message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
 108       @ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "server internal error",
 109           response = String.class)})
 110   @Timed
 111   public Response saveModel(@ApiParam(value = "id") @PathParam("id") String id,
 112       @ApiParam(value = "Model Content", required = true) String json) {
 113     try {
 114       FileCommonUtils.write(WORKFLOW_JSON_TEMP_FILE_NAME, json);
 115
 116       // TODO for Nexus-IQ
 117 //      URI srcUri = Paths.get(".", WORKFLOW_JSON_TEMP_FILE_NAME).toUri();
 118 //      String processName = "plan_" + UUID.randomUUID().toString();
 119 //      String bpmn = buildBPMN(srcUri, processName);
 120 //      String jsonBpmn = insertJson2Bpmn(json, bpmn);
 121
 122 //      save2SDC(json, jsonBpmn);
 123 //      FileCommonUtils.write(WORKFLOW_XML_TEMP_FILE_NAME, jsonBpmn);
 124
 125       return Response.status(Response.Status.OK).entity(json).build();
 126     } catch (IOException e) {
 127       logger.error("save workflow failed.", e);
 128       throw RestUtils.newInternalServerErrorException(e);
 129     } catch (Exception e) {
 130       logger.error("convert workflow from json to bpmn failed.", e);
 131       throw RestUtils.newInternalServerErrorException(e);
 132     }
 133   }
 134
 135   /**
 136    * @param json
 137    * @param bpmn
 138    * @return
 139    */
 140   protected String insertJson2Bpmn(String json, String bpmn) {
 141     StringBuffer sb = new StringBuffer(bpmn);
 142     sb.append("<!-- \n").append(json).append("-->\n");
 143
 144     return sb.toString();
 145   }
 146
 147   /**
 148    *
 149    * @return
 150    * @throws DocumentException
 151    */
 152   protected String readJsonfromBPMNFile(String bpmn) throws DocumentException {
 153     Document doc = DocumentHelper.parseText(bpmn);
 154     List<?> elementList = doc.content();
 155     for (Object object : elementList) {
 156       if (object instanceof Comment) {
 157         Comment comment = (Comment) object;
 158         return comment.getText().trim();
 159       }
 160     }
 161
 162     return null;
 163   }
 164
 165
 166 //  /**
 167 //   * @param json
 168 //   * @param bpmn
 169 //   * @throws WorkflowDesignerException
 170 //   */
 171 //  private void save2SDC(String json, String bpmn) throws WorkflowDesignerException {
 172 //    WorkflowInfo workflowInfo = JsonUtils.fromJson(json, WorkflowInfo.class);
 173 //    WorkflowArtifactInfo workflowArtifactInfo =
 174 //        new WorkflowArtifactInfo(workflowInfo.getName(), workflowInfo.getDescription(), bpmn);
 175 //
 176 //    SDCServiceProxy sdcProxy = new SDCServiceProxy();
 177 //    sdcProxy.saveWorkflowArtifact(workflowInfo.getUuid(), workflowInfo.getOperationId(),
 178 //        workflowInfo.getId(), workflowArtifactInfo);
 179 //  }
 180
 181   /**
 182    *
 183    * @param srcUri
 184    * @param processName
 185    * @return
 186    * @throws IOException
 187    * @throws Exception
 188    */
 189   protected String buildBPMN(URI srcUri, String processName) throws IOException, Exception {
 190     Bpmn4ToscaJsonParser parser = new Bpmn4ToscaJsonParser();
 191     Process process = parser.parse(processName, srcUri);
 192
 193     // transform bpmn template
 194     BpmnPlanArtefactWriter writer = new BpmnPlanArtefactWriter(process);
 195     return writer.completePlanTemplate();
 196   }
 197
 198 }