!1186 Simple设计器-监听器

Merge pull request !1186 from Lesan/feature/bpm-监听器

yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmListenerMapType.java

@@ -0,0 +1,31 @@
+package cn.iocoder.yudao.module.bpm.enums.definition;
+
+import cn.iocoder.yudao.framework.common.core.IntArrayValuable;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import java.util.Arrays;
+
+/**
+ * BPM 任务监听器键值对类型
+ *
+ * @author Lesan
+ */
+@Getter
+@AllArgsConstructor
+public enum BpmListenerMapType implements IntArrayValuable {
+
+    FIXED_VALUE(1, "固定值"),
+    FROM_FORM(2, "表单");
+
+    private final Integer type;
+    private final String name;
+
+    public static final int[] ARRAYS = Arrays.stream(values()).mapToInt(BpmListenerMapType::getType).toArray();
+
+    @Override
+    public int[] array() {
+        return ARRAYS;
+    }
+
+}

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/vo/model/simple/BpmSimpleModelNodeVO.java

@@ -96,6 +96,42 @@ public class BpmSimpleModelNodeVO {
      */
     private AssignEmptyHandler assignEmptyHandler;
 
+    /**
+     * 创建任务监听器
+     */
+    private ListenerHandler createTaskListener;
+
+    @Schema(description = "任务监听器")
+    @Data
+    public static class ListenerHandler {
+
+        @Schema(description = "是否开启任务监听器", example = "false")
+        private Boolean enable;
+
+        @Schema(description = "请求路径", example = "http://xxxxx")
+        private String path;
+
+        @Schema(description = "请求头", example = "[]")
+        private List<ListenerMap> header;
+
+        @Schema(description = "请求体", example = "[]")
+        private List<ListenerMap> body;
+
+        @Schema(description = "任务监听器键值对")
+        @Data
+        public static class ListenerMap {
+
+            @Schema(description = "键", example = "xxx")
+            private String key;
+
+            @Schema(description = "值类型", example = "1")
+            private Integer type;
+
+            @Schema(description = "值", example = "xxx")
+            private String value;
+        }
+    }
+
     @Schema(description = "审批节点拒绝处理策略")
     @Data
     public static class RejectHandler {

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/SimpleModelUtils.java

@@ -4,6 +4,7 @@ import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.lang.Assert;
 import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.*;
+import cn.hutool.json.JSONUtil;
 import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
 import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
 import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO.ConditionGroups;
@@ -15,11 +16,14 @@ import org.flowable.bpmn.BpmnAutoLayout;
 import org.flowable.bpmn.constants.BpmnXMLConstants;
 import org.flowable.bpmn.model.Process;
 import org.flowable.bpmn.model.*;
+import org.flowable.engine.delegate.TaskListener;
 
 import java.util.*;
 
 import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.*;
 import static cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils.*;
+import static cn.iocoder.yudao.module.bpm.service.task.listener.BpmUserTaskListener.DELEGATE_EXPRESSION;
+import static cn.iocoder.yudao.module.bpm.service.task.listener.BpmUserTaskListener.EXTENSION_SUFFIX;
 import static java.util.Arrays.asList;
 
 /**
@@ -420,6 +424,20 @@ public class SimpleModelUtils {
             if (node.getTimeoutHandler() != null && node.getTimeoutHandler().getEnable()) {
                 userTask.setDueDate(node.getTimeoutHandler().getTimeDuration());
             }
+            // 设置监听器
+            List<FlowableListener> flowableListeners = new ArrayList<>(3);
+            if (node.getCreateTaskListener().getEnable()) {
+                FlowableListener flowableListener = new FlowableListener();
+                flowableListener.setEvent(TaskListener.EVENTNAME_CREATE);
+                flowableListener.setImplementationType(ImplementationType.IMPLEMENTATION_TYPE_DELEGATEEXPRESSION);
+                flowableListener.setImplementation(DELEGATE_EXPRESSION);
+                addExtensionElement(userTask, "create" + EXTENSION_SUFFIX,
+                        JSONUtil.toJsonStr(node.getCreateTaskListener()));
+                flowableListeners.add(flowableListener);
+            }
+            if (!flowableListeners.isEmpty()) {
+                userTask.setTaskListeners(flowableListeners);
+            }
             return userTask;
         }
 

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/listener/BpmUserTaskListener.java

@@ -0,0 +1,76 @@
+package cn.iocoder.yudao.module.bpm.service.task.listener;
+
+import cn.hutool.http.HttpRequest;
+import cn.hutool.json.JSONUtil;
+import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
+import cn.iocoder.yudao.module.bpm.enums.definition.BpmListenerMapType;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
+import cn.iocoder.yudao.module.bpm.service.definition.BpmModelService;
+import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
+import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
+import org.flowable.bpmn.model.BpmnModel;
+import org.flowable.bpmn.model.FlowElement;
+import org.flowable.engine.delegate.TaskListener;
+import org.flowable.engine.history.HistoricProcessInstance;
+import org.flowable.task.service.delegate.DelegateTask;
+import org.springframework.stereotype.Component;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils.parseExtensionElement;
+
+/**
+ * BPM 用户任务通用监听器
+ *
+ * @author Lesan
+ */
+@Component
+@Slf4j
+public class BpmUserTaskListener implements TaskListener {
+
+    public static final String DELEGATE_EXPRESSION = "${bpmUserTaskListener}";
+
+    public static final String EXTENSION_SUFFIX = "TaskListenerMetaInfo";
+
+    @Resource
+    private BpmModelService modelService;
+
+    @Resource
+    private BpmProcessInstanceService processInstanceService;
+
+    @Override
+    public void notify(DelegateTask delegateTask) {
+        // 1. 获取所需基础信息
+        HistoricProcessInstance processInstance = processInstanceService.getHistoricProcessInstance(delegateTask.getProcessInstanceId());
+        BpmnModel bpmnModel = modelService.getBpmnModelByDefinitionId(delegateTask.getProcessDefinitionId());
+        FlowElement userTaskElement = BpmnModelUtils.getFlowElementById(bpmnModel, delegateTask.getTaskDefinitionKey());
+        BpmSimpleModelNodeVO.ListenerHandler listenerHandler = JSONUtil.toBean(
+                parseExtensionElement(userTaskElement, delegateTask.getEventName() + EXTENSION_SUFFIX),
+                BpmSimpleModelNodeVO.ListenerHandler.class);
+        Map<String, Object> processVariables = processInstance.getProcessVariables();
+        // 2. 获取请求头和请求体
+        HashMap<String, String> headers = new HashMap<>();
+        HashMap<String, Object> body = new HashMap<>();
+        listenerHandler.getHeader().forEach(item -> {
+            if (item.getType().equals(BpmListenerMapType.FIXED_VALUE.getType())) {
+                headers.put(item.getKey(), item.getValue());
+            } else if (item.getType().equals(BpmListenerMapType.FROM_FORM.getType())) {
+                headers.put(item.getKey(), processVariables.getOrDefault(item.getValue(), "").toString());
+            }
+        });
+        listenerHandler.getBody().forEach(item -> {
+            if (item.getType().equals(BpmListenerMapType.FIXED_VALUE.getType())) {
+                body.put(item.getKey(), item.getValue());
+            } else if (item.getType().equals(BpmListenerMapType.FROM_FORM.getType())) {
+                body.put(item.getKey(), processVariables.getOrDefault(item.getValue(), ""));
+            }
+        });
+        // 3. 异步发起请求
+        HttpRequest.post(listenerHandler.getPath())
+                .addHeaders(headers).form(body).executeAsync();
+        // 4. 是否需要后续操作？
+    }
+
+}