fjl
fujunling
2023-07-18 2c6c24281d4c261b172d02a98df9524cffc0c276
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/*
 *      Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: Chill 庄骞 (smallchill@163.com)
 */
package com.vci.ubcs.flow.engine.service.impl;
 
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.vci.ubcs.flow.core.dto.FlowTaskDTO;
import com.vci.ubcs.flow.core.entity.BladeFlow;
import com.vci.ubcs.flow.core.enums.FlowModeEnum;
import com.vci.ubcs.flow.core.utils.TaskUtil;
import com.vci.ubcs.flow.engine.constant.FlowEngineConstant;
import com.vci.ubcs.flow.engine.entity.FlowExecution;
import com.vci.ubcs.flow.engine.entity.FlowModel;
import com.vci.ubcs.flow.engine.entity.FlowProcess;
import com.vci.ubcs.flow.engine.mapper.FlowMapper;
import com.vci.ubcs.flow.engine.service.FlowEngineService;
import com.vci.ubcs.flow.engine.utils.FlowCache;
import com.vci.ubcs.system.user.cache.UserCache;
import com.vci.ubcs.system.user.entity.User;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.flowable.bpmn.converter.BpmnXMLConverter;
import org.flowable.bpmn.model.*;
import org.flowable.bpmn.model.Process;
import org.flowable.common.engine.impl.util.IoUtil;
import org.flowable.common.engine.impl.util.io.StringStreamSource;
import org.flowable.editor.language.json.converter.BpmnJsonConverter;
import org.flowable.engine.*;
import org.flowable.engine.history.HistoricActivityInstance;
import org.flowable.engine.history.HistoricProcessInstance;
import org.flowable.engine.impl.persistence.entity.ExecutionEntityImpl;
import org.flowable.engine.impl.persistence.entity.ProcessDefinitionEntityImpl;
import org.flowable.engine.repository.Deployment;
import org.flowable.engine.repository.ProcessDefinition;
import org.flowable.engine.repository.ProcessDefinitionQuery;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.engine.runtime.ProcessInstanceQuery;
import org.flowable.engine.task.Comment;
import org.flowable.image.ProcessDiagramGenerator;
import org.springblade.core.log.exception.ServiceException;
import org.springblade.core.mp.support.Condition;
import org.springblade.core.secure.utils.AuthUtil;
import org.springblade.core.tool.utils.DateUtil;
import org.springblade.core.tool.utils.FileUtil;
import org.springblade.core.tool.utils.Func;
import org.springblade.core.tool.utils.StringUtil;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
 
import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.*;
 
/**
 * 工作流服务实现类
 *
 * @author Chill
 */
@Slf4j
@Service
@AllArgsConstructor
public class FlowEngineServiceImpl extends ServiceImpl<FlowMapper, FlowModel> implements FlowEngineService {
    private static final String ALREADY_IN_STATE = "already in state";
    private static final String USR_TASK = "userTask";
    private static final String IMAGE_NAME = "image";
    private static final String XML_NAME = "xml";
    private static final Integer INT_1024 = 1024;
    private static final BpmnJsonConverter BPMN_JSON_CONVERTER = new BpmnJsonConverter();
    private static final BpmnXMLConverter BPMN_XML_CONVERTER = new BpmnXMLConverter();
    private final ObjectMapper objectMapper;
    private final RepositoryService repositoryService;
    private final RuntimeService runtimeService;
    private final HistoryService historyService;
    private final TaskService taskService;
    private final ProcessEngine processEngine;
 
    /**
     * 数据操作对象
     */
    @Resource
    private FlowMapper flowMapper;
 
    @Override
    public IPage<FlowModel> selectFlowPage(IPage<FlowModel> page, FlowModel flowModel) {
        return page.setRecords(baseMapper.selectFlowPage(page, flowModel));
    }
 
    @Override
    public IPage<FlowProcess> selectProcessPage(IPage<FlowProcess> page, String category, Integer mode) {
        ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery().latestVersion().orderByProcessDefinitionKey().asc();
        // 通用流程
        if (mode == FlowModeEnum.COMMON.getMode()) {
            processDefinitionQuery.processDefinitionWithoutTenantId();
        }
        // 定制流程
        else if (!AuthUtil.isAdministrator()) {
            processDefinitionQuery.processDefinitionTenantId(AuthUtil.getTenantId());
        }
        if (StringUtils.isNotEmpty(category)) {
            processDefinitionQuery.processDefinitionCategory(category);
        }
        List<ProcessDefinition> processDefinitionList = processDefinitionQuery.listPage(Func.toInt((page.getCurrent() - 1) * page.getSize()), Func.toInt(page.getSize()));
        List<FlowProcess> flowProcessList = new ArrayList<>();
        processDefinitionList.forEach(processDefinition -> {
            String deploymentId = processDefinition.getDeploymentId();
            Deployment deployment = repositoryService.createDeploymentQuery().deploymentId(deploymentId).singleResult();
            FlowProcess flowProcess = new FlowProcess((ProcessDefinitionEntityImpl) processDefinition);
            flowProcess.setDeploymentTime(deployment.getDeploymentTime());
            flowProcessList.add(flowProcess);
        });
        page.setTotal(processDefinitionQuery.count());
        page.setRecords(flowProcessList);
        return page;
    }
 
    @Override
    public IPage<FlowExecution> selectFollowPage(IPage<FlowExecution> page, String processInstanceId, String processDefinitionKey) {
        ProcessInstanceQuery processInstanceQuery = runtimeService.createProcessInstanceQuery();
        if (StringUtil.isNotBlank(processInstanceId)) {
            processInstanceQuery.processInstanceId(processInstanceId);
        }
        if (StringUtil.isNotBlank(processDefinitionKey)) {
            processInstanceQuery.processDefinitionKey(processDefinitionKey);
        }
        List<FlowExecution> flowList = new ArrayList<>();
        List<ProcessInstance> procInsList = processInstanceQuery.listPage(Func.toInt((page.getCurrent() - 1) * page.getSize()), Func.toInt(page.getSize()));
        procInsList.forEach(processInstance -> {
            ExecutionEntityImpl execution = (ExecutionEntityImpl) processInstance;
            FlowExecution flowExecution = new FlowExecution();
            flowExecution.setId(execution.getId());
            flowExecution.setName(execution.getName());
            flowExecution.setStartUserId(execution.getStartUserId());
            User taskUser = UserCache.getUserByTaskUser(execution.getStartUserId());
            if (taskUser != null) {
                flowExecution.setStartUser(taskUser.getName());
            }
            flowExecution.setStartTime(execution.getStartTime());
            flowExecution.setExecutionId(execution.getId());
            flowExecution.setProcessInstanceId(execution.getProcessInstanceId());
            flowExecution.setProcessDefinitionId(execution.getProcessDefinitionId());
            flowExecution.setProcessDefinitionKey(execution.getProcessDefinitionKey());
            flowExecution.setSuspensionState(execution.getSuspensionState());
            FlowProcess processDefinition = FlowCache.getProcessDefinition(execution.getProcessDefinitionId());
            flowExecution.setCategory(processDefinition.getCategory());
            flowExecution.setCategoryName(FlowCache.getCategoryName(processDefinition.getCategory()));
            flowList.add(flowExecution);
        });
        page.setTotal(processInstanceQuery.count());
        page.setRecords(flowList);
        return page;
    }
 
    @Override
    public List<BladeFlow> historyFlowList(String processInstanceId, String startActivityId, String endActivityId) {
        List<BladeFlow> flowList = new LinkedList<>();
        List<HistoricActivityInstance> historicActivityInstanceList = historyService.createHistoricActivityInstanceQuery().processInstanceId(processInstanceId).orderByHistoricActivityInstanceStartTime().asc().orderByHistoricActivityInstanceEndTime().asc().list();
        boolean start = false;
        Map<String, Integer> activityMap = new HashMap<>(16);
        for (int i = 0; i < historicActivityInstanceList.size(); i++) {
            HistoricActivityInstance historicActivityInstance = historicActivityInstanceList.get(i);
            // 过滤开始节点前的节点
            if (StringUtil.isNotBlank(startActivityId) && startActivityId.equals(historicActivityInstance.getActivityId())) {
                start = true;
            }
            if (StringUtil.isNotBlank(startActivityId) && !start) {
                continue;
            }
            // 显示开始节点和结束节点,并且执行人不为空的任务
            if (StringUtils.equals(USR_TASK, historicActivityInstance.getActivityType())
                || FlowEngineConstant.START_EVENT.equals(historicActivityInstance.getActivityType())
                || FlowEngineConstant.END_EVENT.equals(historicActivityInstance.getActivityType())) {
                // 给节点增加序号
                Integer activityNum = activityMap.get(historicActivityInstance.getActivityId());
                if (activityNum == null) {
                    activityMap.put(historicActivityInstance.getActivityId(), activityMap.size());
                }
                BladeFlow flow = new BladeFlow();
                flow.setHistoryActivityId(historicActivityInstance.getActivityId());
                flow.setHistoryActivityName(historicActivityInstance.getActivityName());
                flow.setCreateTime(historicActivityInstance.getStartTime());
                flow.setEndTime(historicActivityInstance.getEndTime());
                String durationTime = DateUtil.secondToTime(Func.toLong(historicActivityInstance.getDurationInMillis(), 0L) / 1000);
                flow.setHistoryActivityDurationTime(durationTime);
                // 获取流程发起人名称
                if (FlowEngineConstant.START_EVENT.equals(historicActivityInstance.getActivityType())) {
                    List<HistoricProcessInstance> processInstanceList = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).orderByProcessInstanceStartTime().asc().list();
                    if (processInstanceList.size() > 0) {
                        if (StringUtil.isNotBlank(processInstanceList.get(0).getStartUserId())) {
                            String taskUser = processInstanceList.get(0).getStartUserId();
                            User user = UserCache.getUser(TaskUtil.getUserId(taskUser));
                            if (user != null) {
                                flow.setAssignee(historicActivityInstance.getAssignee());
                                flow.setAssigneeName(user.getName());
                            }
                        }
                    }
                }
                // 获取任务执行人名称
                if (StringUtil.isNotBlank(historicActivityInstance.getAssignee())) {
                    User user = UserCache.getUser(TaskUtil.getUserId(historicActivityInstance.getAssignee()));
                    if (user != null) {
                        flow.setAssignee(historicActivityInstance.getAssignee());
                        flow.setAssigneeName(user.getName());
                    }
                }
                // 获取意见评论内容
                if (StringUtil.isNotBlank(historicActivityInstance.getTaskId())) {
                    List<Comment> commentList = taskService.getTaskComments(historicActivityInstance.getTaskId());
                    if (commentList.size() > 0) {
                        flow.setComment(commentList.get(0).getFullMessage());
                    }
                }
                flowList.add(flow);
            }
            // 过滤结束节点后的节点
            if (StringUtils.isNotBlank(endActivityId) && endActivityId.equals(historicActivityInstance.getActivityId())) {
                boolean temp = false;
                Integer activityNum = activityMap.get(historicActivityInstance.getActivityId());
                // 该活动节点,后续节点是否在结束节点之前,在后续节点中是否存在
                for (int j = i + 1; j < historicActivityInstanceList.size(); j++) {
                    HistoricActivityInstance hi = historicActivityInstanceList.get(j);
                    Integer activityNumA = activityMap.get(hi.getActivityId());
                    boolean numberTemp = activityNumA != null && activityNumA < activityNum;
                    boolean equalsTemp = StringUtils.equals(hi.getActivityId(), historicActivityInstance.getActivityId());
                    if (numberTemp || equalsTemp) {
                        temp = true;
                    }
                }
                if (!temp) {
                    break;
                }
            }
        }
        return flowList;
    }
 
    @Override
    public String changeState(String state, String processId) {
        try {
            if (state.equals(FlowEngineConstant.ACTIVE)) {
                repositoryService.activateProcessDefinitionById(processId, true, null);
                return StringUtil.format("激活ID为 [{}] 的流程成功", processId);
            } else if (state.equals(FlowEngineConstant.SUSPEND)) {
                repositoryService.suspendProcessDefinitionById(processId, true, null);
                return StringUtil.format("挂起ID为 [{}] 的流程成功", processId);
            } else {
                return "暂无流程变更";
            }
        } catch (Exception e) {
            if (e.getMessage().contains(ALREADY_IN_STATE)) {
                return StringUtil.format("ID为 [{}] 的流程已是此状态,无需操作", processId);
            }
            return e.getMessage();
        }
    }
 
    @Override
    public boolean deleteDeployment(String deploymentIds) {
        Func.toStrList(deploymentIds).forEach(deploymentId -> repositoryService.deleteDeployment(deploymentId, true));
        return true;
    }
 
    @Override
    public boolean deployUpload(List<MultipartFile> files, String category, List<String> tenantIdList) {
        files.forEach(file -> {
            try {
                String fileName = file.getOriginalFilename();
                InputStream fileInputStream = file.getInputStream();
                byte[] bytes = FileUtil.copyToByteArray(fileInputStream);
                if (Func.isNotEmpty(tenantIdList)) {
                    tenantIdList.forEach(tenantId -> {
                        Deployment deployment = repositoryService.createDeployment().addBytes(fileName, bytes).tenantId(tenantId).deploy();
                        deploy(deployment, category);
                    });
                } else {
                    Deployment deployment = repositoryService.createDeployment().addBytes(fileName, bytes).deploy();
                    deploy(deployment, category);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        });
        return true;
    }
 
    @Override
    public boolean deployModel(String modelId, String category, List<String> tenantIdList) {
 
        FlowModel model = this.getById(modelId);
        if (model == null) {
            throw new ServiceException("未找到模型 id: " + modelId);
        }
        byte[] bytes = getBpmnXML(model);
        String processName = model.getName();
        if (!StringUtil.endsWithIgnoreCase(processName, FlowEngineConstant.SUFFIX)) {
            processName += FlowEngineConstant.SUFFIX;
        }
        String finalProcessName = processName;
        if (Func.isNotEmpty(tenantIdList)) {
            tenantIdList.forEach(tenantId -> {
                Deployment deployment = repositoryService.createDeployment().addBytes(finalProcessName, bytes).name(model.getName()).key(model.getModelKey()).tenantId(tenantId).deploy();
                deploy(deployment, category);
            });
        } else {
            Deployment deployment = repositoryService.createDeployment().addBytes(finalProcessName, bytes).name(model.getName()).key(model.getModelKey()).deploy();
            deploy(deployment, category);
        }
        return true;
    }
 
    @Override
    public boolean deleteProcessInstance(String processInstanceId, String deleteReason) {
        runtimeService.deleteProcessInstance(processInstanceId, deleteReason);
        return true;
    }
 
    private void deploy(Deployment deployment, String category) {
        log.debug("流程部署--------deploy:  " + deployment + "  分类---------->" + category);
        List<ProcessDefinition> list = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).list();
        StringBuilder logBuilder = new StringBuilder(500);
        List<Object> logArgs = new ArrayList<>();
        // 设置流程分类
        for (ProcessDefinition processDefinition : list) {
            if (StringUtil.isNotBlank(category)) {
                repositoryService.setProcessDefinitionCategory(processDefinition.getId(), category);
            }
            logBuilder.append("部署成功,流程ID={} \n");
            logArgs.add(processDefinition.getId());
        }
        if (list.size() == 0) {
            throw new ServiceException("部署失败,未找到流程");
        } else {
            log.info(logBuilder.toString(), logArgs.toArray());
        }
    }
 
    @Override
    public FlowModel submitModel(FlowModel model) {
 
        //验证重复key
        if(StringUtils.isEmpty(model.getId())&&getFlowModelByKey(model.getModelKey())!=null){
            throw new ServiceException("you cannot definition repetition 流程key!");
        }
 
        FlowModel flowModel = new FlowModel();
        flowModel.setId(model.getId());
        flowModel.setVersion(Func.toInt(model.getVersion(), 0) + 1);
        flowModel.setName(model.getName());
        flowModel.setModelKey(model.getModelKey());
        flowModel.setModelType(FlowModel.MODEL_TYPE_BPMN);
        flowModel.setCreatedBy(TaskUtil.getTaskUser());
        flowModel.setDescription(model.getDescription());
        flowModel.setLastUpdated(Calendar.getInstance().getTime());
        flowModel.setLastUpdatedBy(TaskUtil.getTaskUser());
        flowModel.setTenantId(AuthUtil.getTenantId());
        flowModel.setModelEditorXml(model.getModelEditorXml());
        if (StringUtil.isBlank(model.getId())) {
            flowModel.setCreated(Calendar.getInstance().getTime());
        }
        if (StringUtil.isNotBlank(model.getModelEditorXml())) {
            flowModel.setModelEditorJson(getBpmnJson(model.getModelEditorXml()));
        }
        this.saveOrUpdate(flowModel);
        return flowModel;
    }
 
    @Override
    public Map<String, Object> modelView(String processDefinitionId, String processInstanceId) {
        Map<String, Object> result = new HashMap<>();
        // 节点标记
        if (StringUtil.isNotBlank(processInstanceId)) {
            result.put("flow", this.historyFlowList(processInstanceId, null, null));
            HistoricProcessInstance processInstance = historyService.createHistoricProcessInstanceQuery()
                .processInstanceId(processInstanceId)
                .singleResult();
            processDefinitionId = processInstance.getProcessDefinitionId();
        }
        BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
        // 流程图展示
        result.put("xml", new String(new BpmnXMLConverter().convertToXML(bpmnModel)));
        return result;
    }
 
    @Override
    public void diagramView(String processInstanceId, HttpServletResponse httpServletResponse) {
        // 获得当前活动的节点
        String processDefinitionId;
        // 如果流程已经结束,则得到结束节点
        if (this.isFinished(processInstanceId)) {
            HistoricProcessInstance pi = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
            processDefinitionId = pi.getProcessDefinitionId();
        } else {
            // 如果流程没有结束,则取当前活动节点
            // 根据流程实例ID获得当前处于活动状态的ActivityId合集
            ProcessInstance pi = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
            processDefinitionId = pi.getProcessDefinitionId();
        }
        List<String> highLightedActivities = new ArrayList<>();
 
        // 获得活动的节点
        List<HistoricActivityInstance> highLightedActivityList = historyService.createHistoricActivityInstanceQuery().processInstanceId(processInstanceId).orderByHistoricActivityInstanceStartTime().asc().list();
 
        for (HistoricActivityInstance tempActivity : highLightedActivityList) {
            String activityId = tempActivity.getActivityId();
            highLightedActivities.add(activityId);
        }
 
        List<String> flows = new ArrayList<>();
        // 获取流程图
        BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
        ProcessEngineConfiguration engConf = processEngine.getProcessEngineConfiguration();
 
        ProcessDiagramGenerator diagramGenerator = engConf.getProcessDiagramGenerator();
        InputStream in = diagramGenerator.generateDiagram(bpmnModel, "bmp", highLightedActivities, flows, engConf.getActivityFontName(),
            engConf.getLabelFontName(), engConf.getAnnotationFontName(), engConf.getClassLoader(), 1.0, true);
        OutputStream out = null;
        byte[] buf = new byte[1024];
        int length;
        try {
            out = httpServletResponse.getOutputStream();
            while ((length = in.read(buf)) != -1) {
                out.write(buf, 0, length);
            }
        } catch (IOException e) {
            log.error("操作异常", e);
        } finally {
            IoUtil.closeSilently(out);
            IoUtil.closeSilently(in);
        }
    }
 
    @Override
    public void resourceView(String processDefinitionId, String processInstanceId, String resourceType, HttpServletResponse response) {
        if (StringUtil.isAllBlank(processDefinitionId, processInstanceId)) {
            return;
        }
        if (StringUtil.isBlank(processDefinitionId)) {
            ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
            processDefinitionId = processInstance.getProcessDefinitionId();
        }
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(processDefinitionId).singleResult();
        String resourceName = "";
        if (resourceType.equals(IMAGE_NAME)) {
            resourceName = processDefinition.getDiagramResourceName();
        } else if (resourceType.equals(XML_NAME)) {
            resourceName = processDefinition.getResourceName();
        }
        try {
            InputStream resourceAsStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), resourceName);
            byte[] b = new byte[1024];
            int len;
            while ((len = resourceAsStream.read(b, 0, INT_1024)) != -1) {
                response.getOutputStream().write(b, 0, len);
            }
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }
 
    @Override
    public byte[] getModelEditorXML(FlowModel model) {
        return getBpmnXML(model);
    }
 
    /**
     * 根据流程模型key获取XML中节点配置的处理人
     *
     * @param key
     * @return
     */
    @Override
    public List<FlowTaskDTO> getNodeByFlowableKey(String key){
        String processDefinitionId = repositoryService.createProcessDefinitionQuery().latestVersion().processDefinitionKey(key).singleResult().getId();
        BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
        Process process = bpmnModel.getProcesses().get(0);//只有一个
 
        List<FlowTaskDTO> ll = new ArrayList<>();
        if (CollectionUtils.isNotEmpty(process.getFlowElements())) {
            for (FlowElement flowElement : process.getFlowElements()) {
                if (flowElement instanceof UserTask) {
                    FlowTaskDTO flowTaskUserC = new FlowTaskDTO();
                    flowTaskUserC.setTaskId(flowElement.getId());
                    flowTaskUserC.setTaskName(flowElement.getName());
                    ll.add(flowTaskUserC);
                }
            }
        }
        return ll;
    }
    @Override
    public FlowTaskDTO getNodeByFlowableKey(String key, String taskId){
        String processDefinitionId = repositoryService.createProcessDefinitionQuery().latestVersion().processDefinitionKey(key).singleResult().getId();
        BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
        Process process = bpmnModel.getProcesses().get(0);//只有一个
 
        FlowTaskDTO flowTaskUserC = new FlowTaskDTO();
        if (CollectionUtils.isNotEmpty(process.getFlowElements())) {
            for (FlowElement flowElement : process.getFlowElements()) {
                if (flowElement instanceof UserTask&&taskId.equals(flowElement.getId())) {
                    flowTaskUserC.setTaskId(flowElement.getId());
                    flowTaskUserC.setTaskName(flowElement.getName());
                    break;
                }
            }
        }
        return flowTaskUserC;
    }
 
    /**
     * 是否已完结
     *
     * @param processInstanceId 流程实例id
     * @return bool
     */
    private boolean isFinished(String processInstanceId) {
        return historyService.createHistoricProcessInstanceQuery().finished()
            .processInstanceId(processInstanceId).count() > 0;
    }
 
    /**
     * xml转bpmn json
     *
     * @param xml xml
     * @return json
     */
    private String getBpmnJson(String xml) {
        return BPMN_JSON_CONVERTER.convertToJson(getBpmnModel(xml)).toString();
    }
 
    /**
     * xml转bpmnModel
     *
     * @param xml xml
     * @return bpmnModel
     */
    private BpmnModel getBpmnModel(String xml) {
        return BPMN_XML_CONVERTER.convertToBpmnModel(new StringStreamSource(xml), false, false);
    }
 
    private byte[] getBpmnXML(FlowModel model) {
        BpmnModel bpmnModel = getBpmnModel(model);
        return getBpmnXML(bpmnModel);
    }
 
    private byte[] getBpmnXML(BpmnModel bpmnModel) {
        for (Process process : bpmnModel.getProcesses()) {
            if (StringUtils.isNotEmpty(process.getId())) {
                char firstCharacter = process.getId().charAt(0);
                if (Character.isDigit(firstCharacter)) {
                    process.setId("a" + process.getId());
                }
            }
        }
        return BPMN_XML_CONVERTER.convertToXML(bpmnModel);
    }
 
    private BpmnModel getBpmnModel(FlowModel model) {
        BpmnModel bpmnModel;
        try {
            Map<String, FlowModel> formMap = new HashMap<>(16);
            Map<String, FlowModel> decisionTableMap = new HashMap<>(16);
 
            List<FlowModel> referencedModels = baseMapper.findByParentModelId(model.getId());
            for (FlowModel childModel : referencedModels) {
                if (FlowModel.MODEL_TYPE_FORM == childModel.getModelType()) {
                    formMap.put(childModel.getId(), childModel);
 
                } else if (FlowModel.MODEL_TYPE_DECISION_TABLE == childModel.getModelType()) {
                    decisionTableMap.put(childModel.getId(), childModel);
                }
            }
            bpmnModel = getBpmnModel(model, formMap, decisionTableMap);
        } catch (Exception e) {
            log.error("Could not generate BPMN 2.0 model for {}", model.getId(), e);
            throw new ServiceException("Could not generate BPMN 2.0 model");
        }
        return bpmnModel;
    }
 
    private BpmnModel getBpmnModel(FlowModel model, Map<String, FlowModel> formMap, Map<String, FlowModel> decisionTableMap) {
        try {
            ObjectNode editorJsonNode = (ObjectNode) objectMapper.readTree(model.getModelEditorJson());
            Map<String, String> formKeyMap = new HashMap<>(16);
            for (FlowModel formModel : formMap.values()) {
                formKeyMap.put(formModel.getId(), formModel.getModelKey());
            }
            Map<String, String> decisionTableKeyMap = new HashMap<>(16);
            for (FlowModel decisionTableModel : decisionTableMap.values()) {
                decisionTableKeyMap.put(decisionTableModel.getId(), decisionTableModel.getModelKey());
            }
            return BPMN_JSON_CONVERTER.convertToBpmnModel(editorJsonNode, formKeyMap, decisionTableKeyMap);
        } catch (Exception e) {
            log.error("Could not generate BPMN 2.0 model for {}", model.getId(), e);
            throw new ServiceException("Could not generate BPMN 2.0 model");
        }
    }
 
    public FlowModel getFlowModelByKey(String key){
        Map kv = new HashMap();
        kv.put("model_key",key);
        return baseMapper.selectOne(Condition.getQueryWrapper(kv, FlowModel.class));
    }
 
}