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src/langbot/pkg/workflow/nodes/event_trigger.py

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+"""Event Trigger Node - triggers workflow on system events
+
+Node metadata is loaded from: ../../templates/metadata/nodes/event_trigger.yaml
+"""
+
+from __future__ import annotations
+
+from typing import Any, ClassVar
+
+from ..entities import ExecutionContext
+from ..node import WorkflowNode, workflow_node, NodePort, NodeConfig
+
+
+@workflow_node('event_trigger')
+class EventTriggerNode(WorkflowNode):
+    """Event trigger node - triggers workflow on system events"""
+
+    type_name = "event_trigger"
+    category = "trigger"
+    icon = "📡"
+    name = "event_trigger"
+    description = "event_trigger"
+    name_zh = "事件触发"
+    name_en = "Event Trigger"
+    description_zh = "当系统事件发生时触发工作流"
+    description_en = "Trigger workflow when a system event occurs"
+
+    inputs: ClassVar[list[NodePort]] = []
+    outputs: ClassVar[list[NodePort]] = []
+    config_schema: ClassVar[list[NodeConfig]] = []
+
+    async def execute(self, inputs: dict[str, Any], context: ExecutionContext) -> dict[str, Any]:
+        from datetime import datetime
+
+        trigger_data = context.trigger_data
+
+        return {
+            "event_type": trigger_data.get("event_type", ""),
+            "event_data": trigger_data.get("event_data", {}),
+            "timestamp": trigger_data.get("timestamp", datetime.now().isoformat()),
+        }