FEAT: NEW WORKFLOW ENGINE (#3160)

Co-authored-by: Joel <iamjoel007@gmail.com>
Co-authored-by: Yeuoly <admin@srmxy.cn>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>
Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: nite-knite <nkCoding@gmail.com>
Co-authored-by: jyong <718720800@qq.com>

api/core/workflow/errors.py

@@ -0,0 +1,10 @@
+from core.workflow.entities.node_entities import NodeType
+
+
+class WorkflowNodeRunFailedError(Exception):
+    def __init__(self, node_id: str, node_type: NodeType, node_title: str, error: str):
+        self.node_id = node_id
+        self.node_type = node_type
+        self.node_title = node_title
+        self.error = error
+        super().__init__(f"Node {node_title} run failed: {error}")