mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-04 08:20:25 +08:00
32 lines
803 B
Go
32 lines
803 B
Go
package application
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"mayfly-go/internal/flow/domain/entity"
|
|
)
|
|
|
|
/******************* 开始节点处理器 *******************/
|
|
|
|
const FlowNodeTypeStart entity.FlowNodeType = "start" // 开始节点
|
|
|
|
// StartNodeBehavior 开始节点处理器
|
|
type StartNodeBehavior struct {
|
|
DefaultNodeBehavior
|
|
}
|
|
|
|
var _ NodeBehavior = (*StartNodeBehavior)(nil)
|
|
|
|
func (h *StartNodeBehavior) GetType() entity.FlowNodeType {
|
|
return FlowNodeTypeStart
|
|
}
|
|
|
|
func (h *StartNodeBehavior) Validate(ctx context.Context, flowDef *entity.FlowDef, node *entity.FlowNode) error {
|
|
// 检查开始节点是否有一个连线指出去
|
|
edgesFromStartNode := flowDef.GetEdgeBySourceNode(node.Key)
|
|
if len(edgesFromStartNode) == 0 {
|
|
return errors.New("start node not has outgoing edge")
|
|
}
|
|
return nil
|
|
}
|