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.UUID;
  19
  20 import javax.ws.rs.Consumes;
  21 import javax.ws.rs.GET;
  22 import javax.ws.rs.PUT;
  23 import javax.ws.rs.Path;
  24 import javax.ws.rs.PathParam;
  25 import javax.ws.rs.Produces;
  26 import javax.ws.rs.core.MediaType;
  27 import javax.ws.rs.core.Response;
  28
  29 import org.eclipse.jetty.http.HttpStatus;
  30 import org.onap.sdc.workflowdesigner.model.Process;
  31 import org.onap.sdc.workflowdesigner.parser.Bpmn4ToscaJsonParser;
  32 import org.onap.sdc.workflowdesigner.utils.FileCommonUtils;
  33 import org.onap.sdc.workflowdesigner.utils.RestUtils;
  34 import org.onap.sdc.workflowdesigner.writer.BpmnPlanArtefactWriter;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 import com.codahale.metrics.annotation.Timed;
  39
  40 import io.swagger.annotations.Api;
  41 import io.swagger.annotations.ApiOperation;
  42 import io.swagger.annotations.ApiParam;
  43 import io.swagger.annotations.ApiResponse;
  44 import io.swagger.annotations.ApiResponses;
  45
  46 /**
  47  * Workflow Modeler Resource.
  48  *
  49  */
  50 @Path("/models")
  51 @Api(tags = {"Workflow Modeler"})
  52 public class WorkflowModelerResource {
  53   private static final Logger logger = LoggerFactory.getLogger(WorkflowModelerResource.class);
  54
  55   private static final String WORKFLOW_JSON_TEMP_FILE_NAME = "temp_workflow.json";
  56   private static final String WORKFLOW_XML_TEMP_FILE_NAME = "temp_workflow.xml";
  57
  58
  59   /**
  60    *
  61    * @return Response
  62    */
  63   @Path("/{id}")
  64   @GET
  65   @Consumes(MediaType.APPLICATION_JSON)
  66   @Produces(MediaType.APPLICATION_JSON)
  67   @ApiOperation(value = "Get Model", response = String.class)
  68   @ApiResponses(value = {
  69       @ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
  70           response = String.class),
  71       @ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
  72           message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
  73       @ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "server internal error",
  74           response = String.class)})
  75   @Timed
  76   public Response getModel(@ApiParam(value = "id") @PathParam("id") String id) {
  77     try {
  78       String json = FileCommonUtils.readString(WORKFLOW_JSON_TEMP_FILE_NAME);
  79       return Response.status(Response.Status.OK).entity(json).build();
  80     } catch (IOException e) {
  81       logger.error("get workflow failed.", e);
  82       throw RestUtils.newInternalServerErrorException(e);
  83     }
  84   }
  85
  86
  87
  88   @Path("/{id}")
  89   @PUT
  90   @Consumes(MediaType.APPLICATION_JSON)
  91   @Produces(MediaType.APPLICATION_JSON)
  92   @ApiOperation(value = "Save Model", response = String.class)
  93   @ApiResponses(value = {
  94       @ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
  95           response = String.class),
  96       @ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
  97           message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
  98       @ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "server internal error",
  99           response = String.class)})
 100   @Timed
 101   public Response saveModel(@ApiParam(value = "id") @PathParam("id") String id,
 102       @ApiParam(value = "Model Content", required = true) String json) {
 103     try {
 104       FileCommonUtils.write(WORKFLOW_JSON_TEMP_FILE_NAME, json);
 105
 106       URI srcUri = Paths.get(".", WORKFLOW_JSON_TEMP_FILE_NAME).toUri();
 107       String processName = "plan_" + UUID.randomUUID().toString();
 108       Bpmn4ToscaJsonParser parser = new Bpmn4ToscaJsonParser();
 109       Process process = parser.parse(processName, srcUri);
 110
 111       // transform bpmn template
 112       BpmnPlanArtefactWriter writer = new BpmnPlanArtefactWriter(process);
 113       String bpmn = writer.completePlanTemplate();
 114
 115       FileCommonUtils.write(WORKFLOW_XML_TEMP_FILE_NAME, bpmn);
 116
 117       return Response.status(Response.Status.OK).entity(json).build();
 118     } catch (IOException e) {
 119       logger.error("save workflow failed.", e);
 120       throw RestUtils.newInternalServerErrorException(e);
 121     } catch (Exception e) {
 122       logger.error("convert workflow from json to bpmn failed.", e);
 123       throw RestUtils.newInternalServerErrorException(e);
 124     }
 125   }
 126
 127 }