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lodsve.workflow.core.WorkflowEngine Maven / Gradle / Ivy
/*
* Copyright (C) 2018 Sun.Hao
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see [email protected] )
* @version V1.0, 2015-11-19 10:35
*/
@Component
public class WorkflowEngine {
@Autowired
private WorkTaskRepository workTaskRepository;
@Autowired
private ProcessInstanceRepository processInstanceRepository;
@Autowired
private ConditionalResolver resolver;
@Autowired
private SnowflakeIdGenerator snowflakeIdGenerator;
/**
* 发起工作流
*
* @param resourceId 资源ID
* @param domain 发起的目标对象class
* @param launchUserId 发起人
* @param launchUser 发起人姓名
* @return 流程实例ID
*/
public Long startProcess(Long resourceId, String title, Class domain, Long launchUserId, String launchUser) {
Assert.notNull(domain);
Assert.notNull(launchUserId);
Assert.hasText(launchUser);
Workflow workflow = findWorkflow(domain);
// 开始节点
FlowNode startNode = workflow.getStartNode();
Assert.notNull(startNode, "开始节点不能为空！");
Date time = DateUtils.getNow();
WorkTask task = new WorkTask();
task.setFlowId(workflow.getId());
task.setNodeId(startNode.getId());
task.setResourceId(resourceId);
task.setFlowTitle(workflow.getTitle());
task.setNodeTitle(startNode.getTitle());
task.setUrlType(startNode.getUrlType());
task.setTaskUserId(launchUserId);
task.setTaskUserName(launchUser);
task.setReceiveTime(time);
task.setResult(AuditResult.UNDO);
task.setProcessTitle(title);
workTaskRepository.save(task);
// 生成流程实例
ProcessInstance instance = new ProcessInstance();
instance.setFlowId(workflow.getId());
instance.setFlowTitle(workflow.getTitle());
instance.setStartUserId(launchUserId);
instance.setStartUserName(launchUser);
instance.setCurrentNodeId(startNode.getId());
instance.setCurrentNodeTitle(startNode.getTitle());
instance.setStartTime(time);
instance.setResourceId(resourceId);
instance.setProcessTitle(title);
processInstanceRepository.save(instance);
return instance.getId();
}
/**
* 流程办理
*
* @param processInstanceId 流程实例ID
* @param domain 发起的目标对象class
* @param resourceId 资源ID
* @param launchUserId 办理人ID
* @param launchUser 办理人姓名
* @param result 办理结果
* @param remark 办理意见
*/
public void handler(Long processInstanceId, Class domain, Long resourceId, Long launchUserId, String launchUser, AuditResult result, String remark) {
Assert.notNull(processInstanceId);
Assert.notNull(domain);
Assert.notNull(resourceId);
Assert.notNull(launchUserId);
Assert.notNull(launchUser);
Assert.notNull(result);
Assert.hasText(remark);
// processInstance
ProcessInstance instance = processInstanceRepository.findOne(processInstanceId);
Assert.notNull(instance, String.format("流程示例不存在!流程示例id: %s!", processInstanceId));
// 获得流程定义
Workflow workflow = findWorkflow(domain);
// 获取当前待办
WorkTask task = workTaskRepository.findUndoTask(workflow.getId(), resourceId, domain.getName());
Assert.notNull(task, String.format("当前待办不存在,流程名: %s, 流程实例ID: %s, 当前待办ID: %s", instance.getFlowTitle(), processInstanceId, task.getId()));
// 获取当前节点
List nodes = workflow.getNodes();
final Long currentNodeId = instance.getCurrentNodeId();
FlowNode node = ListUtils.findOne(nodes, new ListUtils.Decide() {
@Override
public boolean judge(FlowNode target) {
return target.getId().equals(currentNodeId);
}
});
Assert.notNull(node, String.format("当前节点不存在!流程名: %s, 流程实例ID: %s, 流程节点: %s, 待办ID: %s",
workflow.getTitle(), processInstanceId, currentNodeId, task.getId()));
// 获得下一节点
final String next = node.getNext();
FlowNode nextNode = ListUtils.findOne(nodes, new ListUtils.Decide() {
@Override
public boolean judge(FlowNode target) {
return target.getName().equals(next);
}
});
Assert.notNull(nextNode, String.format("当前节点下一节点不存在!流程名: %s, 流程实例ID: %s, 当前节点: %s, 待办ID: %s, 下一节点name: %s",
workflow.getTitle(), processInstanceId, currentNodeId, task.getId(), next));
// 获得下一节点的handlerInterceptor
HandlerInterceptor interceptor = node.getInterceptor();
// 获得下一节点的办理人表达式
String conditional = node.getConditional();
List handlerUserIds = resolver.resolveHandlers(conditional);
// 开始办理...
// 办理前做的事情
if (interceptor != null) {
interceptor.preNodeHandler(workflow, node, task, result, launchUserId, remark);
}
// 办理
// 1. 办掉当前事项
workTaskRepository.doTask(task.getId(), result, remark);
// 2. 生成下一步待办,如果是多个人办理,就生成多条待办
List tasks = new ArrayList<>(handlerUserIds.size());
for (Long handlerUserId : handlerUserIds) {
WorkTask nextTask = new WorkTask();
Long id = snowflakeIdGenerator.nextId("");
nextTask.setId(id);
nextTask.setFlowId(workflow.getId());
nextTask.setNodeId(nextNode.getId());
nextTask.setResourceId(task.getResourceId());
nextTask.setFlowTitle(workflow.getTitle());
nextTask.setNodeTitle(nextNode.getTitle());
nextTask.setProcessTitle(task.getProcessTitle());
nextTask.setUrlType(nextNode.getUrlType());
nextTask.setTaskUserId(handlerUserId);
nextTask.setTaskUserName(resolver.resolveHandlerName(handlerUserId));
nextTask.setReceiveTime(new Date());
nextTask.setResult(AuditResult.UNDO);
tasks.add(nextTask);
}
workTaskRepository.batchSave(tasks);
// 3. 更新流程实例
processInstanceRepository.updateProcessInstance(instance.getId(), nextNode.getId(), nextNode.getTitle());
// 办理之后要做的事情
if (interceptor != null) {
interceptor.postNodeHandler(workflow, node, task, result, launchUserId, remark);
}
}
private Workflow findWorkflow(Class clazz) {
List workflows = WorkflowLocalStorage.getWorkflow(clazz);
if (CollectionUtils.isEmpty(workflows)) {
throw new WorkflowException(108008, String.format("%s对应的流程不存在，请检查！", clazz.getSimpleName()), clazz.getSimpleName());
}
// 目前仅支持单一流程，即一个domain对应一个流程
return workflows.get(0);
}
}
