refactor(api): rename dify_graph to graphon (#34095)

api/graphon/node_events/base.py

@@ -0,0 +1,40 @@
+from collections.abc import Mapping
+from typing import Any
+
+from pydantic import BaseModel, Field
+
+from graphon.enums import WorkflowNodeExecutionMetadataKey, WorkflowNodeExecutionStatus
+from graphon.model_runtime.entities.llm_entities import LLMUsage
+
+
+class NodeEventBase(BaseModel):
+    """Base class for all node events"""
+
+    pass
+
+
+def _default_metadata():
+    v: Mapping[WorkflowNodeExecutionMetadataKey, Any] = {}
+    return v
+
+
+class NodeRunResult(BaseModel):
+    """
+    Node Run Result.
+    """
+
+    status: WorkflowNodeExecutionStatus = WorkflowNodeExecutionStatus.PENDING
+
+    inputs: Mapping[str, Any] = Field(default_factory=dict)
+    process_data: Mapping[str, Any] = Field(default_factory=dict)
+    outputs: Mapping[str, Any] = Field(default_factory=dict)
+    metadata: Mapping[WorkflowNodeExecutionMetadataKey, Any] = Field(default_factory=_default_metadata)
+    llm_usage: LLMUsage = Field(default_factory=LLMUsage.empty_usage)
+
+    edge_source_handle: str = "source"  # source handle id of node with multiple branches
+
+    error: str = ""
+    error_type: str = ""
+
+    # single step node run retry
+    retry_index: int = 0