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重新实现后端的 bpm 流程图的高亮接口
This commit is contained in:
YunaiV
parent
adc6076deb
commit
676e4f29d9
@ -0,0 +1,40 @@
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package cn.iocoder.yudao.adminserver.modules.bpm.controller.task;
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import cn.hutool.core.util.StrUtil;
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import cn.iocoder.yudao.adminserver.modules.bpm.service.task.BpmActivityService;
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import cn.iocoder.yudao.framework.common.util.servlet.ServletUtils;
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import io.swagger.annotations.Api;
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import io.swagger.annotations.ApiImplicitParam;
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import io.swagger.annotations.ApiOperation;
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import org.springframework.validation.annotation.Validated;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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import javax.annotation.Resource;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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@Api(tags = "流程活动实例")
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@RestController
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@RequestMapping("/bpm/activity")
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@Validated
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public class BpmActivityController {
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@Resource
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private BpmActivityService activityService;
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// TODO 芋艿：注解、权限、validtion
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@ApiOperation(value = "生成指定流程实例的高亮流程图",
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notes = "只高亮进行中的任务。不过要注意，该接口暂时没用，通过前端的 ProcessViewer.vue 界面的 highlightDiagram 方法生成")
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@GetMapping("/generate-highlight-diagram")
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@ApiImplicitParam(name = "id", value = "流程实例的编号", required = true, dataTypeClass = String.class)
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public void generateHighlightDiagram(@RequestParam("processInstanceId") String processInstanceId,
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HttpServletResponse response) throws IOException {
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byte[] bytes = activityService.generateHighlightDiagram(processInstanceId);
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ServletUtils.writeAttachment(response, StrUtil.format("流程图-{}.svg", processInstanceId), bytes);
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}
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}
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@ -20,7 +20,7 @@ import java.util.List;
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import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
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import static cn.iocoder.yudao.framework.web.core.util.WebFrameworkUtils.getLoginUserId;
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@Api(tags = "流程任务")
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@Api(tags = "流程任务实例")
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@RestController
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@RequestMapping("/bpm/task")
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@Validated
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@ -72,14 +72,4 @@ public class BpmTaskController {
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return success(taskService.getTaskListByProcessInstanceId(processInstanceId));
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}
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/**
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* 返回高亮的流转图SVG
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* @param processInstanceId 流程Id
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*/
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@GetMapping("/process/highlight-img")
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public void getHighlightImg(@RequestParam String processInstanceId, HttpServletResponse response) throws IOException {
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FileResp fileResp = taskService.getHighlightImg(processInstanceId);
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ServletUtils.writeAttachment(response, fileResp.getFileName(), fileResp.getFileByte());
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}
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}
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@ -1,24 +0,0 @@
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package cn.iocoder.yudao.adminserver.modules.bpm.controller.task.vo.task;
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import lombok.Data;
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// TODO @Li：1）改成 HighlightImgRespVO 吧。2）swagger 注解要补充；3）fileByte => fileContent
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/**
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* 文件输出类
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*
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* @author yunlongn
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*/
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@Data
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public class FileResp {
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/**
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* 文件名字
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*/
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private String fileName;
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/**
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* 文件输出流
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*/
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private byte[] fileByte;
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}
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@ -33,7 +33,8 @@ public interface BpmErrorCodeConstants {
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ErrorCode PROCESS_DEFINITION_KEY_NOT_MATCH = new ErrorCode(1009003000, "流程定义的标识期望是({})，当前是({})，请修改 BPMN 流程图");
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ErrorCode PROCESS_DEFINITION_NAME_NOT_MATCH = new ErrorCode(1009003001, "流程定义的名字期望是({})，当前是({})，请修改 BPMN 流程图");
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ErrorCode PROCESS_DEFINITION_NOT_EXISTS = new ErrorCode(1009003002, "流程定义不存在");
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ErrorCode PROCESS_DEFINITION_IS_SUSPENDED = new ErrorCode(1009003002, "流程定义处于挂起状态");
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ErrorCode PROCESS_DEFINITION_IS_SUSPENDED = new ErrorCode(1009003003, "流程定义处于挂起状态");
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ErrorCode PROCESS_DEFINITION_BPMN_MODEL_NOT_EXISTS = new ErrorCode(1009003004, "流程定义的模型不存在");
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// ========== 流程实例 1-009-004-000 ==========
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ErrorCode PROCESS_INSTANCE_NOT_EXISTS = new ErrorCode(1009004000, "流程实例不存在");
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@ -0,0 +1,25 @@
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package cn.iocoder.yudao.adminserver.modules.bpm.service.task;
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/**
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* BPM 活动实例 Service 接口
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*
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* @author 芋道源码
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*/
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public interface BpmActivityService {
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/**
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* 生成指定流程实例的高亮流程图，只高亮进行中的任务
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*
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* 友情提示，非该方法的注释。如果想实现更高级的高亮流程图（当前节点红色 + 完成节点为绿色），可参考如下内容：
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* 博客一：https://blog.csdn.net/qq_40109075/article/details/110939639
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* 博客二：https://gitee.com/tony2y/RuoYi-flowable/blob/master/ruoyi-flowable/src/main/java/com/ruoyi/flowable/flow/CustomProcessDiagramGenerator.java
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* 这里不实现的原理，需要自定义实现 ProcessDiagramGenerator 和 ProcessDiagramCanvas，代码量有点大
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*
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* 如果你想实现高亮已完成的任务，可参考 https://blog.csdn.net/qiuxinfa123/article/details/119579863 博客。不过测试下来，貌似不太对~
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*
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* @param processInstanceId 实例Id
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* @return 图的字节数组
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*/
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byte[] generateHighlightDiagram(String processInstanceId);
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}
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@ -10,7 +10,7 @@ import java.util.List;
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import java.util.Map;
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/**
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* 流程任务 Service 接口
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* 流程任务实例 Service 接口
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*
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* @author jason
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* @author 芋道源码
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@ -32,6 +32,14 @@ public interface BpmTaskService {
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*/
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List<BpmTaskRespVO> getTaskListByProcessInstanceId(String processInstanceId);
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/**
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* 获得流程任务列表
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*
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* @param processInstanceId 流程实例的编号
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* @return 流程任务列表
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*/
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List<Task> getTasksByProcessInstanceId(String processInstanceId);
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/**
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* 获得流程任务列表
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*
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@ -101,13 +109,6 @@ public interface BpmTaskService {
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*/
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void rejectTask(Long userId, @Valid BpmTaskRejectReqVO reqVO);
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/**
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* 返回高亮的流转进程
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* @param processInstanceId 实例Id
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* @return {@link FileResp} 返回文件
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*/
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FileResp getHighlightImg(String processInstanceId);
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// ========== Task 拓展表相关 ==========
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/**
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@ -0,0 +1,78 @@
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package cn.iocoder.yudao.adminserver.modules.bpm.service.task.impl;
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import cn.hutool.core.io.IoUtil;
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import cn.iocoder.yudao.adminserver.modules.bpm.service.definition.BpmProcessDefinitionService;
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import cn.iocoder.yudao.adminserver.modules.bpm.service.task.BpmActivityService;
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import cn.iocoder.yudao.adminserver.modules.bpm.service.task.BpmProcessInstanceService;
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import cn.iocoder.yudao.adminserver.modules.bpm.service.task.BpmTaskService;
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import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
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import lombok.extern.slf4j.Slf4j;
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import org.activiti.bpmn.model.BpmnModel;
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import org.activiti.engine.HistoryService;
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import org.activiti.engine.RepositoryService;
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import org.activiti.engine.RuntimeService;
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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.stereotype.Service;
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import org.springframework.validation.annotation.Validated;
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import javax.annotation.Resource;
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import java.io.InputStream;
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import java.util.Collections;
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import java.util.List;
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import static cn.iocoder.yudao.adminserver.modules.bpm.enums.BpmErrorCodeConstants.PROCESS_DEFINITION_BPMN_MODEL_NOT_EXISTS;
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import static cn.iocoder.yudao.adminserver.modules.bpm.enums.BpmErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS;
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import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
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/**
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* BPM 活动实例 Service 实现类
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*
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* @author 芋道源码
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*/
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@Service
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@Slf4j
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@Validated
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public class BpmActivityServiceImpl implements BpmActivityService {
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private static final String FONT_NAME = "宋体";
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@Resource
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private ProcessDiagramGenerator processDiagramGenerator;
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@Resource
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private BpmProcessInstanceService processInstanceService;
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@Resource
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private BpmProcessDefinitionService processDefinitionService;
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@Resource
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private BpmTaskService taskService;
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@Override
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public byte[] generateHighlightDiagram(String processInstanceId) {
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// 获得流程实例
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HistoricProcessInstance processInstance = processInstanceService.getHistoricProcessInstance(processInstanceId);
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if (processInstance == null) {
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throw exception(PROCESS_INSTANCE_NOT_EXISTS);
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}
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// 获得流程定义的 BPMN 模型
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BpmnModel bpmnModel = processDefinitionService.getBpmnModel(processInstance.getProcessDefinitionId());
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if (bpmnModel == null) {
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throw exception(PROCESS_DEFINITION_BPMN_MODEL_NOT_EXISTS);
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}
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// 如果流程已经结束，则无进行中的任务，无法高亮
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// 如果流程未结束，才需要高亮
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List<String> highLightedActivities = Collections.emptyList();
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if (processInstance.getEndTime() == null) {
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List<Task> tasks = taskService.getTasksByProcessInstanceId(processInstanceId);
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highLightedActivities = CollectionUtils.convertList(tasks, Task::getTaskDefinitionKey);
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}
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// 生成高亮流程图
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InputStream inputStream = processDiagramGenerator.generateDiagram(bpmnModel, highLightedActivities, Collections.emptyList(),
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FONT_NAME, FONT_NAME, FONT_NAME);
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return IoUtil.readBytes(inputStream);
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}
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}
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@ -54,7 +54,7 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
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import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
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/**
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* 流程任务 Service 实现类
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* 流程任务实例 Service 实现类
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*
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* @author jason
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* @author 芋道源码
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@ -66,14 +66,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
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@Resource
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private TaskService taskService;
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@Resource
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private RuntimeService runtimeService;
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@Resource
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private HistoryService historyService;
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@Resource
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private RepositoryService repositoryService;
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@Resource
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private ProcessDiagramGenerator processDiagramGenerator;
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@Resource
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private SysUserService userService;
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@ -118,6 +111,14 @@ public class BpmTaskServiceImpl implements BpmTaskService {
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return BpmTaskConvert.INSTANCE.convertList3(tasks, bpmTaskExtDOMap, processInstance, userMap, deptMap);
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}
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@Override
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public List<Task> getTasksByProcessInstanceId(String processInstanceId) {
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if (StrUtil.isEmpty(processInstanceId)) {
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return Collections.emptyList();
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}
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return taskService.createTaskQuery().processInstanceId(processInstanceId).list();
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}
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@Override
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public List<Task> getTasksByProcessInstanceIds(List<String> processInstanceIds) {
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if (CollUtil.isEmpty(processInstanceIds)) {
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@ -270,129 +271,6 @@ public class BpmTaskServiceImpl implements BpmTaskService {
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// taskService.addComment(task.getId(), task.getProcessInstanceId(), reqVO.getComment());
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}
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@Override
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public FileResp getHighlightImg(String processInstanceId) {
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// 查询历史
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//TODO 云扬四海 貌似流程结束后，点击审批进度会报错
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// TODO @Li：一些 historyService 的查询，貌似比较通用，是不是抽一些小方法出来
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HistoricProcessInstance hpi = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
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// 如果不存在实例。 说明数据异常
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if (hpi == null) {
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// throw exception(PROCESS_INSTANCE_NOT_EXISTS);
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throw new RuntimeException("不存在");
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}
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// 如果有结束时间 返回model的流程图
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if (!ObjectUtils.isEmpty(hpi.getEndTime())) {
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ProcessDefinition pd = repositoryService.createProcessDefinitionQuery().processDefinitionId(hpi.getProcessDefinitionId()).singleResult();
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String resourceName = Optional.ofNullable(pd.getDiagramResourceName()).orElse(pd.getResourceName());
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BpmnModel bpmnModel = repositoryService.getBpmnModel(pd.getId());
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InputStream inputStream = processDiagramGenerator.generateDiagram(bpmnModel, new ArrayList<>(1), new ArrayList<>(1),
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"宋体", "宋体", "宋体");
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FileResp fileResp = new FileResp();
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fileResp.setFileName( resourceName + ".svg");
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fileResp.setFileByte(IoUtil.readBytes(inputStream));
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return fileResp;
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}
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// 没有结束时间。说明流程在执行过程中
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// TODO @Li：一些 runtimeService 的查询，貌似比较通用，是不是抽一些小方法出来
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ProcessInstance pi = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
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List<String> highLightedActivities = new ArrayList<>();
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// 获取所有活动节点
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List<HistoricActivityInstance> finishedInstances = historyService.createHistoricActivityInstanceQuery()
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.processInstanceId(processInstanceId).finished().list();
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finishedInstances.stream().map(HistoricActivityInstance::getActivityId)
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.forEach(highLightedActivities::add);
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// 已完成的节点+当前节点
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highLightedActivities.addAll(runtimeService.getActiveActivityIds(processInstanceId));
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BpmnModel bpmnModel = repositoryService.getBpmnModel(pi.getProcessDefinitionId());
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// 经过的流
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List<String> highLightedFlowIds = getHighLightedFlows(bpmnModel, processInstanceId);
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//设置"宋体"
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try (InputStream inputStream = processDiagramGenerator.generateDiagram(bpmnModel, highLightedActivities, highLightedFlowIds,
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"宋体", "宋体", "宋体")){
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FileResp fileResp = new FileResp();
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fileResp.setFileName( hpi.getProcessDefinitionName() + ".svg");
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fileResp.setFileByte(IoUtil.readBytes(inputStream));
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return fileResp;
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} catch (IOException e) {
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log.error("[getHighlightImg][流程({}) 生成图表失败]", processInstanceId, e);
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throw exception(HIGHLIGHT_IMG_ERROR);
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}
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}
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// TODO @Li：这个方法的可读性还有一定的优化空间，可以思考下哈。
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/**
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* 获取指定 processInstanceId 已经高亮的Flows
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* 获取已经流转的线 参考： https://blog.csdn.net/qiuxinfa123/article/details/119579863
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* @param bpmnModel model
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* @param processInstanceId 流程实例Id
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* @return 获取已经流转的列表
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*/
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private List<String> getHighLightedFlows(BpmnModel bpmnModel, String processInstanceId) {
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// 获取所有的线条
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List<HistoricActivityInstance> historicActivityInstances = historyService.createHistoricActivityInstanceQuery().processInstanceId(processInstanceId)
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.orderByHistoricActivityInstanceId().asc().list();
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// 高亮流程已发生流转的线id集合
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List<String> highLightedFlowIds = new ArrayList<>();
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// 全部活动节点
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List<FlowNode> historicActivityNodes = new ArrayList<>();
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// 已完成的历史活动节点
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List<HistoricActivityInstance> finishedActivityInstances = new ArrayList<>();
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for (HistoricActivityInstance historicActivityInstance : historicActivityInstances) {
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FlowNode flowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(historicActivityInstance.getActivityId(), true);
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historicActivityNodes.add(flowNode);
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// 结束时间不为空，则是已完成节点
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if (historicActivityInstance.getEndTime() != null) {
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finishedActivityInstances.add(historicActivityInstance);
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}
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}
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// 提取活动id 是唯一的。塞入Map
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Map<String, HistoricActivityInstance> historicActivityInstanceMap = CollectionUtils.convertMap(historicActivityInstances, HistoricActivityInstance::getActivityId);
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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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for (HistoricActivityInstance currentActivityInstance : finishedActivityInstances) {
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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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FlowNode currentFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(currentActivityInstance.getActivityId(), true);
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List<SequenceFlow> sequenceFlows = currentFlowNode.getOutgoingFlows();
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// 遍历outgoingFlows并找到已流转的 满足如下条件认为已已流转：
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// 1.当前节点是并行网关或兼容网关，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查找到的时间最早的流转节点视为有效流转
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if (BpmnXMLConstants.ELEMENT_GATEWAY_PARALLEL.equals(currentActivityInstance.getActivityType())
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|| BpmnXMLConstants.ELEMENT_GATEWAY_INCLUSIVE.equals(currentActivityInstance.getActivityType())) {
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||||
// 遍历历史活动节点，找到匹配流程目标节点的
|
||||
for (SequenceFlow sequenceFlow : sequenceFlows) {
|
||||
FlowNode targetFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(sequenceFlow.getTargetRef(), true);
|
||||
if (historicActivityNodes.contains(targetFlowNode)) {
|
||||
highLightedFlowIds.add(targetFlowNode.getId());
|
||||
}
|
||||
}
|
||||
} else {
|
||||
long earliestStamp = 0L;
|
||||
String highLightedFlowId = null;
|
||||
// 循环流出的流
|
||||
for (SequenceFlow sequenceFlow : sequenceFlows) {
|
||||
HistoricActivityInstance historicActivityInstance = historicActivityInstanceMap.get(sequenceFlow.getTargetRef());
|
||||
if (historicActivityInstance == null) {
|
||||
continue;
|
||||
}
|
||||
final long startTime = historicActivityInstance.getStartTime().getTime();
|
||||
// 遍历匹配的集合，取得开始时间最早的一个
|
||||
if (earliestStamp == 0 || earliestStamp >= startTime) {
|
||||
highLightedFlowId = sequenceFlow.getId();
|
||||
earliestStamp = startTime;
|
||||
}
|
||||
}
|
||||
highLightedFlowIds.add(highLightedFlowId);
|
||||
}
|
||||
|
||||
}
|
||||
return highLightedFlowIds;
|
||||
}
|
||||
|
||||
private Task getTask(String id) {
|
||||
return taskService.createTaskQuery().taskId(id).singleResult();
|
||||
}
|
||||
|
||||
@ -0,0 +1,12 @@
|
||||
/**
|
||||
* task 包下，存放的都是 xxx 实例。例如说：
|
||||
* 1. ProcessInstance 是 ProcessDefinition 创建而来的实例；
|
||||
* 2. TaskInstance 是 TaskDefinition 创建而来的实例；
|
||||
* 3. ActivityInstance 是 BPMN 流程图的每个元素创建的实例；
|
||||
*
|
||||
* 考虑到 Task 和 Activity 可以比较明确表示名字，所以对应的 Service 就没有使用 Instance 后缀~
|
||||
* 嘿嘿，其实也是实现到比较后面的阶段，所以就暂时没去统一和修改了~
|
||||
*
|
||||
* @author 芋道源码
|
||||
*/
|
||||
package cn.iocoder.yudao.adminserver.modules.bpm.service.task;
|
||||
Loading…
Reference in New Issue
Block a user