package cn.stylefeng.guns.workflow.modular.controller.base;
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import cn.hutool.core.io.IoUtil;
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import cn.stylefeng.guns.workflow.core.consts.ActConst;
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import cn.stylefeng.guns.workflow.core.consts.BpmsActivityTypeEnum;
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import cn.stylefeng.guns.workflow.core.util.DelFileUtil;
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import cn.stylefeng.guns.workflow.core.util.FileUpload;
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import cn.stylefeng.guns.workflow.core.util.PathUtil;
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import cn.stylefeng.guns.workflow.core.util.UtilMisc;
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import cn.stylefeng.roses.core.base.controller.BaseController;
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import org.activiti.bpmn.model.BpmnModel;
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import org.activiti.bpmn.model.FlowNode;
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import org.activiti.bpmn.model.SequenceFlow;
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import org.activiti.engine.*;
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import org.activiti.engine.history.HistoricActivityInstance;
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import org.activiti.engine.history.HistoricProcessInstance;
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import org.activiti.engine.task.Task;
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import org.activiti.image.ProcessDiagramGenerator;
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import org.springframework.beans.factory.annotation.Autowired;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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/**
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* 流程业务相关
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*
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* @author fengshuonan
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* @Date 2019/8/22 21:59
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*/
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public class AcBusinessController extends BaseController {
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/**
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* 流程引擎对象
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*/
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@Autowired
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private ProcessEngine processEngine;
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/**
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* 管理流程定义 与流程定义和部署对象相关的Service
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*/
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@Autowired
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private RepositoryService repositoryService;
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/**
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* 与正在执行的流程实例和执行对象相关的Service(执行管理，包括启动、推进、删除流程实例等操作)
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*/
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@Autowired
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private RuntimeService runtimeService;
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/**
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* 任务管理 与正在执行的任务管理相关的Service
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*/
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@Autowired
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private TaskService taskService;
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/**
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* 历史管理(执行完的数据的管理)
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*/
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@Autowired
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private HistoryService historyService;
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/**
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* 指派任务的代理人
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*
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* @param assignee 代理人
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* @param taskId 任务ID
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*/
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protected void setAssignee(String taskId, String assignee) {
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taskService.setAssignee(taskId, assignee);
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}
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/**
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* 设置流程变量(绑定任务)用Map形式
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*
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* @param taskId //任务ID
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* @param map
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*/
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protected void setVariablesByTaskIdAsMap(String taskId, Map<String, Object> map) {
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taskService.setVariablesLocal(taskId, map);
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}
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/**
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* 获取流程变量
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*
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* @param taskId 任务ID
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* @param key 键
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*/
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protected Object getVariablesByTaskIdAsMap(String taskId, String key) {
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return taskService.getVariable(taskId, key);
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}
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/**
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* 设置流程变量(不绑定任务)
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*
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* @param taskId 任务ID
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*/
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protected void setVariablesByTaskId(String taskId, String key, String value) {
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taskService.setVariable(taskId, key, value);
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}
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/**
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* 移除流程变量(从正在运行中)
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*
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* @param procInstId 流程实例ID
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*/
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protected void removeVariablesByPROC_INST_ID_(String procInstId, String key) {
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runtimeService.removeVariable(procInstId, key);
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}
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/**
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* 查询我的任务
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*
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* @param username
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* @return 返回任务列表
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*/
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protected List<Task> findMyPersonalTask(String username) {
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//创建查询对象
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return taskService.createTaskQuery()
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//指定办理人
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.taskAssignee(username)
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//读出列表(比如从0到10)
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.list();
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}
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/**
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* 完成任务
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*
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* @param taskId 任务ID
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*/
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protected void completeMyPersonalTask(String taskId) {
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taskService.complete(taskId);
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}
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/**
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* 作废流程
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*
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* @param processId 流程实例ID
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* @param reason 作废原因
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* @throws Exception
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*/
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protected void deleteProcessInstance(String processId, String reason) throws Exception {
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runtimeService.deleteProcessInstance(processId, reason);
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}
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/**
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* 删除历史流程
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*
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* @param procInstId 流程实例ID
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* @throws Exception
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*/
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protected void deleteHiProcessInstance(String procInstId) throws Exception {
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historyService.deleteHistoricProcessInstance(procInstId);
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}
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/**
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* 生成当前任务节点流程图片PNG
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*
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* @param procInstId 流程实例ID
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* @param filename 图片名称
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* @throws IOException
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*/
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protected void createXmlAndPngAtNowTask(String procInstId, String filename) throws IOException {
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//生成先清空之前生成的文件
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DelFileUtil.delFolder(PathUtil.getProjectpath() + "uploadFiles/activitiFile");
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InputStream in = null;
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try {
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in = getResourceDiagramInputStream(procInstId);
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} finally {
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IoUtil.close(in);
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}
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//把文件上传到文件目录里面
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FileUpload.copyFile(in, PathUtil.getProjectpath() + ActConst.FILEACTIVITI, filename);
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}
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/**
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* 获取当前任务流程图片的输入流
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*
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* @param procInstId 流程实例ID
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* @return
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*/
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private InputStream getResourceDiagramInputStream(String procInstId) {
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try {
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//获取历史流程实例
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HistoricProcessInstance hip = historyService.createHistoricProcessInstanceQuery().processInstanceId(procInstId).singleResult();
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List<HistoricActivityInstance> hai = historyService.createHistoricActivityInstanceQuery().processInstanceId(procInstId)
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//获取流程中已经执行的节点，按照执行先后顺序排序
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.orderByHistoricActivityInstanceId().asc().list();
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// 构造已执行的节点ID集合
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List<String> executedActivityIdList = new ArrayList<>();
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for (HistoricActivityInstance activityInstance : hai) {
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executedActivityIdList.add(activityInstance.getActivityId());
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}
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// 获取bpmnModel
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BpmnModel bpmnModel = repositoryService.getBpmnModel(hip.getProcessDefinitionId());
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// 获取流程已发生流转的线ID集合
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List<String> flowIds = this.getExecutedFlows(bpmnModel, hai);
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ProcessDiagramGenerator processDiagramGenerator = processEngine.getProcessEngineConfiguration().getProcessDiagramGenerator();
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return processDiagramGenerator.generateDiagram(bpmnModel, "png", executedActivityIdList, flowIds, "宋体", "微软雅黑", "黑体", null, 2.0);
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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}
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/**
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* 获取流程已发生流转的线ID集合
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*
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* @param bpmnModel
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* @param historicActivityInstances 历史流程实例list
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* @return
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*/
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private List<String> getExecutedFlows(BpmnModel bpmnModel, List<HistoricActivityInstance> historicActivityInstances) {
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//流转线ID集合
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List<String> flowIdList = new ArrayList<>();
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//全部活动实例
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List<FlowNode> historicFlowNodeList = new LinkedList<>();
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//已完成的历史活动节点
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List<HistoricActivityInstance> finishedActivityInstanceList = new LinkedList<>();
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for (HistoricActivityInstance historicActivityInstance : historicActivityInstances) {
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historicFlowNodeList.add((FlowNode) bpmnModel.getMainProcess().getFlowElement(historicActivityInstance.getActivityId(), true));
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if (historicActivityInstance.getEndTime() != null) {
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finishedActivityInstanceList.add(historicActivityInstance);
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}
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}
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//遍历已完成的活动实例，从每个实例的outgoingFlows中找到已执行的
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FlowNode currentFlowNode = null;
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for (HistoricActivityInstance currentActivityInstance : finishedActivityInstanceList) {
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//获得当前活动对应的节点信息及outgoingFlows信息
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currentFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(currentActivityInstance.getActivityId(), true);
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List<SequenceFlow> sequenceFlowList = currentFlowNode.getOutgoingFlows();
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/**
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* 遍历outgoingFlows并找到已流转的
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* 满足如下条件任务已流转：
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* 1.当前节点是并行网关或包含网关，则通过outgoingFlows能够在历史活动中找到的全部节点均为已流转
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* 2.当前节点是以上两种类型之外的，通过outgoingFlows查找到的时间最近的流转节点视为有效流转
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*/
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FlowNode targetFlowNode = null;
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if (BpmsActivityTypeEnum.PARALLEL_GATEWAY.getType().equals(currentActivityInstance.getActivityType())
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|| BpmsActivityTypeEnum.INCLUSIVE_GATEWAY.getType().equals(currentActivityInstance.getActivityType())) {
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//遍历历史活动节点，找到匹配Flow目标节点的
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for (SequenceFlow sequenceFlow : sequenceFlowList) {
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targetFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(sequenceFlow.getTargetRef(), true);
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if (historicFlowNodeList.contains(targetFlowNode)) {
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flowIdList.add(sequenceFlow.getId());
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}
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}
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} else {
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List<Map<String, String>> tempMapList = new LinkedList<>();
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//遍历历史活动节点，找到匹配Flow目标节点的
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for (SequenceFlow sequenceFlow : sequenceFlowList) {
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for (HistoricActivityInstance historicActivityInstance : historicActivityInstances) {
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if (historicActivityInstance.getActivityId().equals(sequenceFlow.getTargetRef())) {
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tempMapList.add(UtilMisc.toMap("flowId", sequenceFlow.getId(), "activityStartTime", String.valueOf(historicActivityInstance.getStartTime().getTime())));
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}
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}
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}
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String flowId = null;
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for (Map<String, String> map : tempMapList) {
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flowId = map.get("flowId");
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flowIdList.add(flowId);
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}
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}
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}
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return flowIdList;
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}
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/**
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* 获取发起人
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*
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* @param procInstId 流程实例ID
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* @return
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*/
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protected String getInitiator(String procInstId) {
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//获取历史流程实例
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HistoricProcessInstance hip = historyService.createHistoricProcessInstanceQuery().processInstanceId(procInstId).singleResult();
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List<HistoricActivityInstance> hais = historyService.createHistoricActivityInstanceQuery().processInstanceId(procInstId)
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//获取流程中已经执行的节点，按照执行先后顺序排序
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.orderByHistoricActivityInstanceId().asc().list();
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// 获取bpmnModel
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BpmnModel bpmnModel = repositoryService.getBpmnModel(hip.getProcessDefinitionId());
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//全部活动实例
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List<FlowNode> historicFlowNodeList = new LinkedList<FlowNode>();
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for (HistoricActivityInstance hai : hais) {
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historicFlowNodeList.add((FlowNode) bpmnModel.getMainProcess().getFlowElement(hai.getActivityId(), true));
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if (hai.getAssignee() != null) {
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//不为空的第一个节点办理人就是发起人
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return hai.getAssignee();
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}
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}
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return null;
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}
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}
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