package cn.stylefeng.guns.workflow.modular.controller;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.node.ObjectNode;
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import org.activiti.editor.constants.ModelDataJsonConstants;
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import org.activiti.engine.ActivitiException;
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import org.activiti.engine.RepositoryService;
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import org.activiti.engine.repository.Model;
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import org.apache.batik.transcoder.TranscoderInput;
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import org.apache.batik.transcoder.TranscoderOutput;
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import org.apache.batik.transcoder.image.PNGTranscoder;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpStatus;
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import org.springframework.util.MultiValueMap;
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import org.springframework.web.bind.annotation.*;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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/**
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* 保存在线流程设计
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*
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* @author fengshuonan
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* @Date 2019/8/8 21:00
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*/
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@RestController
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public class ModelSaveRestResource implements ModelDataJsonConstants {
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protected static final Logger LOGGER = LoggerFactory.getLogger(ModelSaveRestResource.class);
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@Autowired
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private RepositoryService repositoryService;
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@Autowired
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private ObjectMapper objectMapper;
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@RequestMapping(value = "/model/{modelId}/save", method = RequestMethod.POST)
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@ResponseStatus(value = HttpStatus.OK)
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public void saveModel(@PathVariable String modelId, @RequestBody MultiValueMap<String, String> values) {
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try {
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Model model = repositoryService.getModel(modelId);
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ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
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modelJson.put(MODEL_NAME, values.getFirst("name"));
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modelJson.put(MODEL_DESCRIPTION, values.getFirst("description"));
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model.setMetaInfo(modelJson.toString());
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model.setName(values.getFirst("name"));
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repositoryService.saveModel(model);
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repositoryService.addModelEditorSource(model.getId(), values.getFirst("json_xml").getBytes("utf-8"));
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InputStream svgStream = new ByteArrayInputStream(values.getFirst("svg_xml").getBytes("utf-8"));
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TranscoderInput input = new TranscoderInput(svgStream);
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PNGTranscoder transcoder = new PNGTranscoder();
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// Setup output
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ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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TranscoderOutput output = new TranscoderOutput(outStream);
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// Do the transformation
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transcoder.transcode(input, output);
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final byte[] result = outStream.toByteArray();
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repositoryService.addModelEditorSourceExtra(model.getId(), result);
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outStream.close();
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} catch (Exception e) {
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LOGGER.error("Error saving model", e);
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throw new ActivitiException("Error saving model", e);
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}
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}
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}
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