feat: 关系校验基本完成, runner入参确定

src/main/java/com/metis/facade/ProcessDefinitionFacade.java

@@ -30,7 +30,7 @@ public class ProcessDefinitionFacade {
     }
 
     public App getByDeploymentId(Long deploymentId) {
-        return appEngineService.getByDeploymentId(deploymentId);
+        return appEngineService.getByWorkflowId(deploymentId);
     }
 
     public void update(ProcessBo processBo) {

src/main/java/com/metis/flow/domain/context/RunningContext.java

@@ -1,9 +1,16 @@
 package com.metis.flow.domain.context;
 
 import com.alibaba.fastjson2.JSONObject;
+import com.metis.flow.runner.FlowRunningContext;
+import lombok.Builder;
 import lombok.Data;
 
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
 @Data
+@Builder
 public class RunningContext {
 
     /**
@@ -16,4 +23,29 @@ public class RunningContext {
      */
     private JSONObject custom;
 
+    /**
+     * 节点运行上下文, 需要数据进行传递
+     */
+    private Map<Long, JSONObject> nodeRunningContext;
+
+    /**
+     * 下一个运行节点id集合, 可能是多个
+     */
+    private Set<Long> nextRunNodeId;
+
+
+    /**
+     * 构建上下文
+     *
+     * @param context 上下文
+     * @return {@link RunningContext }
+     */
+    public static RunningContext buildContext(SysContext sysContext, FlowRunningContext context) {
+        return RunningContext.builder()
+                .sys(sysContext)
+                .custom(context.getCustom())
+                .nodeRunningContext(new HashMap<>())
+                .build();
+    }
+
 }

src/main/java/com/metis/flow/domain/context/SysContext.java

@@ -1,19 +1,51 @@
 package com.metis.flow.domain.context;
 
+import lombok.Builder;
 import lombok.Data;
 
 import java.util.List;
 
 @Data
+@Builder
 public class SysContext {
 
-    private List<String> file;
+    /**
+     * 文件列表
+     */
+    private List<String> files;
 
+    /**
+     * 沟通的内容
+     */
+    private String query;
+
+    /**
+     * 对话数
+     */
+    private Integer dialogueCount;
+
+    /**
+     * 沟通的id
+     */
+    private String conversationId;
+
+    /**
+     * 应用程序id
+     */
     private Long appId;
 
+    /**
+     * 用户id
+     */
     private Long userId;
 
+    /**
+     * 工作流id
+     */
     private Long workflowId;
 
+    /**
+     * 实例id
+     */
     private Long instanceId;
 }

src/main/java/com/metis/flow/domain/entity/base/Edge.java

@@ -1,7 +1,6 @@
 package com.metis.flow.domain.entity.base;
 
 import com.metis.flow.enums.EdgeType;
-import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import lombok.Data;
 
@@ -11,7 +10,7 @@ public class Edge {
     /**
      * 唯一标识符
      */
-    @NotBlank(message = "唯一标识符不能为空")
+    @NotNull(message = "唯一标识符不能为空")
     private String id;
 
     /**
@@ -28,25 +27,25 @@ public class Edge {
     /**
      * 源节点ID,对应节点id
      */
-    @NotBlank(message = "源节点ID不能为空")
-    private String source;
+    @NotNull(message = "源节点ID不能为空")
+    private Long source;
 
     /**
      * 目标节点ID,对应节点id
      */
-    @NotBlank(message = "目标节点ID不能为空")
-    private String target;
+    @NotNull(message = "目标节点ID不能为空")
+    private Long target;
     /**
      * 源句柄id
      */
-    @NotBlank(message = "源句柄ID不能为空")
-    private String sourceHandle;
+    @NotNull(message = "源句柄ID不能为空")
+    private Long sourceHandle;
 
     /**
      * 目标句柄id
      */
-    @NotBlank(message = "目标句柄ID不能为空")
-    private String targetHandle;
+    @NotNull(message = "目标句柄ID不能为空")
+    private Long targetHandle;
 
     /**
      * 边是否动画true/false

src/main/java/com/metis/flow/domain/entity/base/Handle.java

@@ -1,8 +1,7 @@
 package com.metis.flow.domain.entity.base;
 
-import com.metis.flow.enums.PositionType;
 import com.metis.flow.enums.HandleType;
-import jakarta.validation.constraints.NotBlank;
+import com.metis.flow.enums.PositionType;
 import jakarta.validation.constraints.NotNull;
 import lombok.Data;
 
@@ -14,8 +13,8 @@ public class Handle {
     /**
      * 句柄id
      */
-    @NotBlank(message = "句柄id不能为空")
-    private String id;
+    @NotNull(message = "句柄id不能为空")
+    private Long id;
 
     /**
      * 句柄类型

src/main/java/com/metis/flow/domain/entity/base/Node.java

@@ -5,7 +5,6 @@ import cn.hutool.core.util.ObjectUtil;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.metis.flow.enums.NodeType;
 import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import lombok.Data;
 
@@ -18,8 +17,8 @@ public class Node {
     /**
      * id
      */
-    @NotBlank(message = "节点id不能为空")
-    private String id;
+    @NotNull(message = "节点id不能为空")
+    private Long id;
 
     /**
      * 类型
@@ -43,7 +42,7 @@ public class Node {
 
 
     @JsonIgnore
-    public Map<String, Handle> getHandleMap() {
+    public Map<Long, Handle> getHandleMap() {
         if (CollUtil.isEmpty(data.getHandles())) {
             return Map.of();
         }

src/main/java/com/metis/flow/engine/AppEngineRunnerService.java

@@ -1,6 +0,0 @@
-package com.metis.flow.engine;
-
-public interface AppEngineRunnerService {
-
-
-}

src/main/java/com/metis/flow/engine/AppEngineService.java

@@ -26,6 +26,14 @@ public interface AppEngineService {
     List<App> list(AppQuery query);
 
 
+    /**
+     * 通过应用id获取
+     *
+     * @param appId 应用程序id
+     * @return {@link App }
+     */
+    App getByAppId(Long appId);
+
     /**
      * 按身份证领取
      *
@@ -37,10 +45,10 @@ public interface AppEngineService {
     /**
      * 通过部署id获取
      *
-     * @param deploymentId 部署id
+     * @param workflowId 部署id
      * @return {@link App }
      */
-    App getByDeploymentId(Long deploymentId);
+    App getByWorkflowId(Long workflowId);
 
     /**
      * 按id列表

src/main/java/com/metis/flow/engine/AppFlowEngineRunnerService.java

@@ -0,0 +1,27 @@
+package com.metis.flow.engine;
+
+import com.metis.flow.runner.FlowRunningContext;
+import com.metis.flow.runner.RunnerResult;
+
+/**
+ * 应用引擎运行器服务
+ *
+ * @author clay
+ * @date 2025/04/07
+ */
+public interface AppFlowEngineRunnerService {
+
+
+    /**
+     * 运行
+     *
+     * @param context 上下文
+     * @return {@link RunnerResult }
+     */
+    RunnerResult running(FlowRunningContext context);
+
+
+
+
+
+}

src/main/java/com/metis/flow/engine/impl/AppEngineServiceImpl.java

@@ -42,6 +42,12 @@ public class AppEngineServiceImpl implements AppEngineService {
         return BaseAppConvert.INSTANCE.toApps(list);
     }
 
+    @Override
+    public App getByAppId(Long appId) {
+        BaseApp baseApp = baseAppService.getByAppId(appId);
+        return BaseAppConvert.INSTANCE.toApp(baseApp);
+    }
+
     @Override
     public App getByAppId(Long appId, Integer version) {
         BaseApp baseApp = baseAppService.getByAppIdAndVersion(appId, version);
@@ -49,8 +55,8 @@ public class AppEngineServiceImpl implements AppEngineService {
     }
 
     @Override
-    public App getByDeploymentId(Long deploymentId) {
-        BaseApp baseApp = baseAppService.getById(deploymentId);
+    public App getByWorkflowId(Long workflowId) {
+        BaseApp baseApp = baseAppService.getById(workflowId);
         return BaseAppConvert.INSTANCE.toApp(baseApp);
     }
 

src/main/java/com/metis/flow/engine/impl/AppFlowEngineRunnerServiceImpl.java

@@ -0,0 +1,57 @@
+package com.metis.flow.engine.impl;
+
+import cn.hutool.core.util.IdUtil;
+import cn.hutool.core.util.ObjectUtil;
+import com.metis.flow.domain.context.RunningContext;
+import com.metis.flow.domain.context.SysContext;
+import com.metis.flow.domain.entity.App;
+import com.metis.flow.engine.AppEngineService;
+import com.metis.flow.engine.AppFlowEngineRunnerService;
+import com.metis.flow.runner.FlowRunningContext;
+import com.metis.flow.runner.RunnerResult;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class AppFlowEngineRunnerServiceImpl implements AppFlowEngineRunnerService {
+
+    private final AppEngineService appEngineService;
+
+
+    @Override
+    public RunnerResult running(FlowRunningContext context) {
+        App app = getApp(context);
+        // todo 构建运行实例, 并将运行实例放入上下文
+
+        Long instanceId = IdUtil.getSnowflakeNextId();
+        // 构建系统上下文信息
+        SysContext sysContext = SysContext.builder()
+                .files(context.getFiles())
+                .appId(app.getId())
+                .workflowId(app.getWorkflowId())
+                .instanceId(instanceId)
+                .build();
+        // 构建运行中上下文
+        RunningContext runningContext = RunningContext.buildContext(sysContext, context);
+
+
+        return null;
+    }
+
+
+    /**
+     * 获取到应用程序信息
+     *
+     * @param context 上下文
+     * @return {@link App }
+     */
+    private App getApp(FlowRunningContext context) {
+        if (ObjectUtil.isNull(context.getWorkflowId())) {
+            return appEngineService.getByWorkflowId(context.getWorkflowId());
+        }
+        return appEngineService.getByAppId(context.getAppId());
+    }
+}

src/main/java/com/metis/flow/runner/FlowRunningContext.java

@@ -0,0 +1,45 @@
+package com.metis.flow.runner;
+
+import com.alibaba.fastjson2.JSONObject;
+import lombok.Builder;
+import lombok.Data;
+
+import java.util.List;
+
+/**
+ * 运行上下文
+ *
+ * @author clay
+ * @date 2025/04/07
+ */
+@Data
+@Builder
+public class FlowRunningContext {
+
+    /**
+     * 文件列表
+     */
+    private List<String> files;
+
+    /**
+     * 应用程序id
+     */
+    private Long appId;
+
+    /**
+     * 用户id
+     */
+    private Long userId;
+
+    /**
+     * 工作流id
+     */
+    private Long workflowId;
+
+    /**
+     * 自定义
+     */
+    private JSONObject custom;
+
+
+}

src/main/java/com/metis/flow/runner/NodeRunner.java

@@ -1,9 +1,12 @@
 package com.metis.flow.runner;
 
 import com.metis.flow.domain.context.RunningContext;
+import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.NodeType;
 
+import java.util.List;
+
 public interface NodeRunner {
 
 
@@ -12,9 +15,10 @@ public interface NodeRunner {
      *
      * @param context 上下文
      * @param node    节点配置信息
+     * @param edges
      * @return {@link RunningContext }
      */
-    RunningContext run(RunningContext context, Node node);
+    RunningContext run(RunningContext context, Node node, List<Edge> edges);
 
 
     /**

src/main/java/com/metis/flow/runner/RunnerInitialize.java

@@ -8,6 +8,12 @@ import org.springframework.stereotype.Service;
 
 import java.util.Map;
 
+/**
+ * runner初始化
+ *
+ * @author clay
+ * @date 2025/04/07
+ */
 @Service
 public class RunnerInitialize implements ApplicationContextAware {
 

src/main/java/com/metis/flow/runner/RunnerResult.java

@@ -0,0 +1,27 @@
+package com.metis.flow.runner;
+
+
+import com.metis.flow.domain.context.SysContext;
+import lombok.Data;
+
+/**
+ * 运行结果
+ *
+ * @author clay
+ * @date 2025/04/07
+ */
+@Data
+public class RunnerResult {
+
+    /**
+     * 运行内容
+     */
+    private String content;
+
+    /**
+     * 上下文
+     */
+    private SysContext context;
+
+
+}

src/main/java/com/metis/flow/runner/impl/EndNodeRunner.java

@@ -2,18 +2,21 @@ package com.metis.flow.runner.impl;
 
 
 import com.metis.flow.domain.context.RunningContext;
+import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.NodeType;
 import com.metis.flow.runner.NodeRunner;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Slf4j
 @Service
 public class EndNodeRunner implements NodeRunner {
 
     @Override
-    public RunningContext run(RunningContext context, Node node) {
+    public RunningContext run(RunningContext context, Node node, List<Edge> edges) {
         return context;
     }
 

src/main/java/com/metis/flow/runner/impl/StartNodeRunner.java

@@ -1,18 +1,21 @@
 package com.metis.flow.runner.impl;
 
 import com.metis.flow.domain.context.RunningContext;
+import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.NodeType;
 import com.metis.flow.runner.NodeRunner;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Slf4j
 @Service
 public class StartNodeRunner implements NodeRunner {
 
     @Override
-    public RunningContext run(RunningContext context, Node node) {
+    public RunningContext run(RunningContext context, Node node, List<Edge> edges) {
         return context;
     }
 

src/main/java/com/metis/flow/validator/NodeValidator.java

@@ -1,8 +1,11 @@
 package com.metis.flow.validator;
 
+import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.NodeType;
 
+import java.util.List;
+
 public interface NodeValidator {
 
 
@@ -12,7 +15,18 @@ public interface NodeValidator {
      * @param node 节点
      * @return {@link ValidatorResult }
      */
-    ValidatorResult validate(Node node);
+    ValidatorResult validateValue(Node node);
+
+
+    /**
+     * 验证关系
+     *
+     * @param node    节点
+     * @param sources 来源
+     * @param targets 目标
+     * @return {@link ValidatorResult }
+     */
+    ValidatorResult validateRelation(Node node, List<Edge> sources, List<Edge> targets);
 
 
     /**

src/main/java/com/metis/flow/validator/impl/ValidatorServiceImpl.java

@@ -53,7 +53,7 @@ public class ValidatorServiceImpl implements ValidatorService {
             NodeValidator validator = NodeValidatorFactory.get(type);
             // 节点校验器
             Assert.isTrue(ObjectUtil.isNotNull(validator), "无:{}类型的节点校验器", type.getName());
-            ValidatorResult result = validator.validate(node);
+            ValidatorResult result = validator.validateValue(node);
             // 返回值检查
             Assert.isTrue(ObjectUtil.isNotNull(result), "类型:{} 的校验器无返回值", validator.getType().getName());
             if (!result.getValid()) {
@@ -94,6 +94,9 @@ public class ValidatorServiceImpl implements ValidatorService {
      * @param edges 边缘
      */
     private void validateRelation(List<Node> nodes, List<Edge> edges) {
+        // 0. 检查是否只有一个起始节点
+        validateSingleStartNode(nodes);
+
         // 1. 检查线是否连接有效节点
         validateEdgeConnections(nodes, edges);
 
@@ -102,16 +105,39 @@ public class ValidatorServiceImpl implements ValidatorService {
 
         // 3. 检查是否存在孤立节点
         validateIsolatedNodes(nodes, edges);
+
+        // 4. 检查两个节点间是否有多根连线
+        validateMultipleEdgesBetweenNodes(edges);
+
+        // 5. 检查节点自己的关系信息
+        validateNodeRelations(nodes, edges);
+
     }
 
+    /**
+     * 检查是否只有一个起始节点
+     *
+     * @param nodes 节点
+     */
+    private void validateSingleStartNode(List<Node> nodes) {
+        Long startNodeCount = nodes.stream()
+                .filter(node -> NodeType.START.equals(node.getType()))
+                .count();
+        Assert.isTrue(startNodeCount.equals(1L), "图中必须且只能有一个起始节点，当前起始节点数量: {}", startNodeCount);
+    }
+
+
     /**
      * 检查线是否连接有效节点
+     *
+     * @param nodes 节点
+     * @param edges 边缘
      */
     private void validateEdgeConnections(List<Node> nodes, List<Edge> edges) {
-        Map<String, Node> nodeMap = nodes.stream().collect(Collectors.toMap(Node::getId, Function.identity()));
+        Map<Long, Node> nodeMap = nodes.stream().collect(Collectors.toMap(Node::getId, Function.identity()));
         for (Edge edge : edges) {
-            String source = edge.getSource();
-            String target = edge.getTarget();
+            Long source = edge.getSource();
+            Long target = edge.getTarget();
             Assert.isTrue(nodeMap.containsKey(source), "边 {} 的源节点 {} 不存在", edge.getLabel(), source);
             Assert.isTrue(nodeMap.containsKey(target), "边 {} 的目标节点 {} 不存在", edge.getLabel(), target);
         }
@@ -119,9 +145,12 @@ public class ValidatorServiceImpl implements ValidatorService {
 
     /**
      * 检查是否存在环结构
+     *
+     * @param nodes 节点
+     * @param edges 边缘
      */
     private void validateCycle(List<Node> nodes, List<Edge> edges) {
-        Map<String, List<String>> adjacencyList = buildAdjacencyList(edges);
+        Map<Long, List<Long>> adjacencyList = buildAdjacencyList(edges);
         for (Node node : nodes) {
             if (hasCycle(node.getId(), adjacencyList, new HashSet<>())) {
                 throw new IllegalArgumentException("图中存在环结构，起始节点: " + node.getData().getLabel());
@@ -131,9 +160,12 @@ public class ValidatorServiceImpl implements ValidatorService {
 
     /**
      * 检查是否存在孤立节点
+     *
+     * @param nodes 节点
+     * @param edges 边缘
      */
     private void validateIsolatedNodes(List<Node> nodes, List<Edge> edges) {
-        Set<String> connectedNodes = new HashSet<>();
+        Set<Long> connectedNodes = new HashSet<>();
         for (Edge edge : edges) {
             connectedNodes.add(edge.getSource());
             connectedNodes.add(edge.getTarget());
@@ -145,9 +177,12 @@ public class ValidatorServiceImpl implements ValidatorService {
 
     /**
      * 构建邻接表
+     *
+     * @param edges 边缘
+     * @return {@link Map }<{@link Long }, {@link List }<{@link Long }>>
      */
-    private Map<String, List<String>> buildAdjacencyList(List<Edge> edges) {
-        Map<String, List<String>> adjacencyList = new HashMap<>();
+    private Map<Long, List<Long>> buildAdjacencyList(List<Edge> edges) {
+        Map<Long, List<Long>> adjacencyList = new HashMap<>();
         for (Edge edge : edges) {
             adjacencyList.computeIfAbsent(edge.getSource(), k -> new ArrayList<>()).add(edge.getTarget());
         }
@@ -156,13 +191,18 @@ public class ValidatorServiceImpl implements ValidatorService {
 
     /**
      * 深度优先搜索（DFS）检查环
+     *
+     * @param nodeId        节点id
+     * @param adjacencyList 邻接表
+     * @param visited       是否已经访问过了
+     * @return boolean
      */
-    private boolean hasCycle(String nodeId, Map<String, List<String>> adjacencyList, Set<String> visited) {
+    private boolean hasCycle(Long nodeId, Map<Long, List<Long>> adjacencyList, Set<Long> visited) {
         if (visited.contains(nodeId)) {
             return true; // 发现环
         }
         visited.add(nodeId);
-        for (String neighbor : adjacencyList.getOrDefault(nodeId, new ArrayList<>())) {
+        for (Long neighbor : adjacencyList.getOrDefault(nodeId, new ArrayList<>())) {
             if (hasCycle(neighbor, adjacencyList, visited)) {
                 return true;
             }
@@ -171,4 +211,40 @@ public class ValidatorServiceImpl implements ValidatorService {
         return false;
     }
 
+    /**
+     * 检查两个节点间是否有多根连线
+     *
+     * @param edges 边缘
+     */
+    private void validateMultipleEdgesBetweenNodes(List<Edge> edges) {
+        Map<String, Integer> edgeCountMap = new HashMap<>();
+        for (Edge edge : edges) {
+            String key = edge.getSource() + "-" + edge.getTarget(); // 使用 source 和 target 作为唯一标识
+            edgeCountMap.put(key, edgeCountMap.getOrDefault(key, 0) + 1);
+            if (edgeCountMap.get(key) > 1) {
+                throw new IllegalArgumentException("节点 " + edge.getSource() + " 和节点 " + edge.getTarget() + " 之间存在多根连线");
+            }
+        }
+    }
+
+
+    /**
+     * 检查节点的关系信息
+     */
+    private void validateNodeRelations(List<Node> nodes, List<Edge> edges) {
+        // 构建 source 和 target 的映射
+        Map<Long, List<Edge>> sourceMap = edges.stream().collect(Collectors.groupingBy(Edge::getSource));
+        Map<Long, List<Edge>> targetMap = edges.stream().collect(Collectors.groupingBy(Edge::getTarget));
+
+        for (Node node : nodes) {
+            NodeValidator validator = NodeValidatorFactory.get(node.getType());
+            // 获取当前节点的 source 和 target
+            List<Edge> sources = targetMap.getOrDefault(node.getId(), new ArrayList<>());
+            List<Edge> targets = sourceMap.getOrDefault(node.getId(), new ArrayList<>());
+            // 检查节点关系
+            ValidatorResult result = validator.validateRelation(node, sources, targets);
+            Assert.isTrue(result.getValid(), result.getMessage());
+        }
+    }
+
 }

src/main/java/com/metis/flow/validator/impl/node/DocumentExtractorNodeValidator.java

@@ -1,5 +1,7 @@
 package com.metis.flow.validator.impl.node;
 
+import cn.hutool.core.lang.Assert;
+import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.domain.entity.config.node.DocumentExtractorNodeConfig;
 import com.metis.flow.enums.NodeType;
@@ -10,6 +12,8 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Slf4j
 @Service
 @RequiredArgsConstructor
@@ -17,13 +21,21 @@ public class DocumentExtractorNodeValidator implements NodeValidator {
     private final ValidatorCodeService validatorCodeService;
 
     @Override
-    public ValidatorResult validate(Node node) {
+    public ValidatorResult validateValue(Node node) {
         DocumentExtractorNodeConfig config = node.getConfig();
         validatorCodeService.validateThrow(config);
         // 业务检查未通过
         return ValidatorResult.invalid("业务报错");
     }
 
+    @Override
+    public ValidatorResult validateRelation(Node node, List<Edge> sources, List<Edge> targets) {
+        // 1. 检查 targets 数量是否等于 1（只允许一个出）
+        Assert.isTrue(targets.size() == 1, "节点 {} 的出连接数必须为 1，当前数量: {}", node.getId(), targets.size());
+
+        return ValidatorResult.valid();
+    }
+
     @Override
     public NodeType getType() {
         return NodeType.DOCUMENT_EXTRACTOR;

src/main/java/com/metis/flow/validator/impl/node/EndNodeValidator.java

@@ -1,5 +1,7 @@
 package com.metis.flow.validator.impl.node;
 
+import cn.hutool.core.lang.Assert;
+import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.NodeType;
 import com.metis.flow.validator.NodeValidator;
@@ -8,6 +10,8 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Slf4j
 @Service
 @RequiredArgsConstructor
@@ -16,7 +20,19 @@ public class EndNodeValidator implements NodeValidator {
 
 
     @Override
-    public ValidatorResult validate(Node node) {
+    public ValidatorResult validateValue(Node node) {
+        return ValidatorResult.valid();
+    }
+
+    @Override
+    public ValidatorResult validateRelation(Node node, List<Edge> sources, List<Edge> targets) {
+        // 1. 结束节点不允许有目标连接
+        Assert.isTrue(targets.isEmpty(), "结束节点 {} 不允许有目标连接", node.getId());
+
+        // 2. 检查 sources 数量是否小于 handles 数量
+        int handleCount = node.getData().getHandles().size();
+        Assert.isTrue(sources.size() <= handleCount, "结束节点 {} 的源连接数超过 handles 数量", node.getId());
+
         return ValidatorResult.valid();
     }
 

src/main/java/com/metis/flow/validator/impl/node/StartNodeValidator.java

@@ -1,5 +1,7 @@
 package com.metis.flow.validator.impl.node;
 
+import cn.hutool.core.lang.Assert;
+import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.NodeType;
 import com.metis.flow.validator.NodeValidator;
@@ -7,12 +9,26 @@ import com.metis.flow.validator.ValidatorResult;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Slf4j
 @Service
 public class StartNodeValidator implements NodeValidator {
 
     @Override
-    public ValidatorResult validate(Node node) {
+    public ValidatorResult validateValue(Node node) {
+        return ValidatorResult.valid();
+    }
+
+    @Override
+    public ValidatorResult validateRelation(Node node, List<Edge> sources, List<Edge> targets) {
+        // 1. 开始节点不允许有源连接
+        Assert.isTrue(sources.isEmpty(), "开始节点 {} 不允许有源连接", node.getId());
+
+        // 2. 检查 targets 数量是否小于 handles 数量
+        int handleCount = node.getData().getHandles().size();
+        Assert.isTrue(targets.size() <= handleCount, "开始节点 {} 的目标连接数超过 handles 数量", node.getId());
+
         return ValidatorResult.valid();
     }