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/**
* Copyright (c) 2017-2018 ZTE Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the Apache License, Version 2.0
* and the Eclipse Public License v1.0 which both accompany this distribution,
* and are available at http://www.eclipse.org/legal/epl-v10.html
* and http://www.apache.org/licenses/LICENSE-2.0
*
* Contributors:
* ZTE - initial API and implementation and/or initial documentation
*/
package org.onap.sdc.workflowdesigner.resources;
import java.io.IOException;
import java.net.URI;
import java.nio.file.Paths;
import java.util.List;
import java.util.UUID;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.dom4j.Comment;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.eclipse.jetty.http.HttpStatus;
import org.onap.sdc.workflowdesigner.common.WorkflowDesignerException;
import org.onap.sdc.workflowdesigner.externalservice.sdc.SDCServiceProxy;
import org.onap.sdc.workflowdesigner.externalservice.sdc.entity.WorkflowArtifactInfo;
import org.onap.sdc.workflowdesigner.model.Process;
import org.onap.sdc.workflowdesigner.parser.Bpmn4ToscaJsonParser;
import org.onap.sdc.workflowdesigner.resources.entity.WorkflowInfo;
import org.onap.sdc.workflowdesigner.utils.FileCommonUtils;
import org.onap.sdc.workflowdesigner.utils.JsonUtils;
import org.onap.sdc.workflowdesigner.utils.RestUtils;
import org.onap.sdc.workflowdesigner.writer.BpmnPlanArtefactWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.codahale.metrics.annotation.Timed;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
/**
* Workflow Modeler Resource.
*
*/
@Path("/models")
@Api(tags = {"Workflow Modeler"})
public class WorkflowModelerResource {
private static final Logger logger = LoggerFactory.getLogger(WorkflowModelerResource.class);
private static final String WORKFLOW_JSON_TEMP_FILE_NAME = "temp_workflow.json";
private static final String WORKFLOW_XML_TEMP_FILE_NAME = "temp_workflow.xml";
/**
*
* @return Response
*/
@Path("/{id}")
@GET
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Get Model", response = String.class)
@ApiResponses(value = {
@ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
response = String.class),
@ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
@ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "server internal error",
response = String.class)})
@Timed
public Response getModel(@ApiParam(value = "id") @PathParam("id") String id) {
try {
String json = FileCommonUtils.readString(WORKFLOW_JSON_TEMP_FILE_NAME);
return Response.status(Response.Status.OK).entity(json).build();
} catch (IOException e) {
logger.error("get workflow failed.", e);
throw RestUtils.newInternalServerErrorException(e);
}
}
@Path("/{id}")
@PUT
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Save Model", response = String.class)
@ApiResponses(value = {
@ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
response = String.class),
@ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
@ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "server internal error",
response = String.class)})
@Timed
public Response saveModel(@ApiParam(value = "id") @PathParam("id") String id,
@ApiParam(value = "Model Content", required = true) String json) {
try {
FileCommonUtils.write(WORKFLOW_JSON_TEMP_FILE_NAME, json);
URI srcUri = Paths.get(".", WORKFLOW_JSON_TEMP_FILE_NAME).toUri();
String processName = "plan_" + UUID.randomUUID().toString();
// TODO for Nexus-IQ
// String bpmn = buildBPMN(srcUri, processName);
// String jsonBpmn = insertJson2Bpmn(json, bpmn);
// save2SDC(json, jsonBpmn);
// FileCommonUtils.write(WORKFLOW_XML_TEMP_FILE_NAME, jsonBpmn);
return Response.status(Response.Status.OK).entity(json).build();
} catch (IOException e) {
logger.error("save workflow failed.", e);
throw RestUtils.newInternalServerErrorException(e);
} catch (Exception e) {
logger.error("convert workflow from json to bpmn failed.", e);
throw RestUtils.newInternalServerErrorException(e);
}
}
/**
* @param json
* @param bpmn
* @return
*/
protected String insertJson2Bpmn(String json, String bpmn) {
StringBuffer sb = new StringBuffer(bpmn);
sb.append("<!-- \n").append(json).append("-->\n");
return sb.toString();
}
/**
*
* @return
* @throws DocumentException
*/
protected String readJsonfromBPMNFile(String bpmn) throws DocumentException {
Document doc = DocumentHelper.parseText(bpmn);
List<?> elementList = doc.content();
for (Object object : elementList) {
if (object instanceof Comment) {
Comment comment = (Comment) object;
return comment.getText().trim();
}
}
return null;
}
/**
* @param json
* @param bpmn
* @throws WorkflowDesignerException
*/
private void save2SDC(String json, String bpmn) throws WorkflowDesignerException {
WorkflowInfo workflowInfo = JsonUtils.fromJson(json, WorkflowInfo.class);
WorkflowArtifactInfo workflowArtifactInfo =
new WorkflowArtifactInfo(workflowInfo.getName(), workflowInfo.getDescription(), bpmn);
SDCServiceProxy sdcProxy = new SDCServiceProxy();
sdcProxy.saveWorkflowArtifact(workflowInfo.getUuid(), workflowInfo.getOperationId(),
workflowInfo.getId(), workflowArtifactInfo);
}
/**
*
* @param srcUri
* @param processName
* @return
* @throws IOException
* @throws Exception
*/
protected String buildBPMN(URI srcUri, String processName) throws IOException, Exception {
Bpmn4ToscaJsonParser parser = new Bpmn4ToscaJsonParser();
Process process = parser.parse(processName, srcUri);
// transform bpmn template
BpmnPlanArtefactWriter writer = new BpmnPlanArtefactWriter(process);
return writer.completePlanTemplate();
}
}
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