com.smallpay.workflow.service.api.model.ModelSaveRestResource.java Source code

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Here is the source code for com.smallpay.workflow.service.api.model.ModelSaveRestResource.java

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/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.smallpay.workflow.service.api.model;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.*;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;

/**
 * @author Tijs Rademakers
 */
@RestController
public class ModelSaveRestResource implements ModelDataJsonConstants {

    protected static final Logger LOGGER = LoggerFactory.getLogger(ModelSaveRestResource.class);

    @Autowired
    private RepositoryService repositoryService;

    @Autowired
    private ObjectMapper objectMapper;

    @RequestMapping(value = "/service/model/{modelId}/save", method = RequestMethod.PUT, consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE)
    @ResponseStatus(value = HttpStatus.OK)
    public void saveModel(@PathVariable String modelId, @RequestParam MultiValueMap<String, String> values) {
        try {

            Model model = repositoryService.getModel(modelId);

            ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());

            modelJson.put(MODEL_NAME, values.getFirst("name"));
            modelJson.put(MODEL_DESCRIPTION, values.getFirst("description"));
            model.setMetaInfo(modelJson.toString());
            model.setName(values.getFirst("name"));

            repositoryService.saveModel(model);

            repositoryService.addModelEditorSource(model.getId(), values.getFirst("json_xml").getBytes("utf-8"));

            InputStream svgStream = new ByteArrayInputStream(values.getFirst("svg_xml").getBytes("utf-8"));
            TranscoderInput input = new TranscoderInput(svgStream);

            PNGTranscoder transcoder = new PNGTranscoder();
            // Setup output
            ByteArrayOutputStream outStream = new ByteArrayOutputStream();
            TranscoderOutput output = new TranscoderOutput(outStream);

            // Do the transformation
            transcoder.transcode(input, output);
            final byte[] result = outStream.toByteArray();
            repositoryService.addModelEditorSourceExtra(model.getId(), result);
            outStream.close();

        } catch (Exception e) {
            LOGGER.error("Error saving model", e);
            throw new ActivitiException("Error saving model", e);
        }
    }
}