Do not allow create WorkflowTool from workflows containing HumanInput nodes (vibe-kanban 9e27ac53)

The HumanInput node will pause the execution of workflow if execution, while WorkflowTool works in a blocking manner. (Receiving arguments and returning results once finished). The two mode are inherently incompatible.

The goal of this change is to forbid workflows containing HumanInput node being published as WorkflowTool.

Please check the current implementation and propose a solution.

api/core/tools/errors.py

@@ -1,3 +1,5 @@
+from libs.exception import BaseHTTPException
+
 from core.tools.entities.tool_entities import ToolInvokeMeta
 
 
@@ -37,6 +39,12 @@ class ToolCredentialPolicyViolationError(ValueError):
     pass
 
 
+class WorkflowToolHumanInputNotSupportedError(BaseHTTPException):
+    error_code = "workflow_tool_human_input_not_supported"
+    description = "Workflow with Human Input nodes cannot be published as a workflow tool."
+    code = 400
+
+
 class ToolEngineInvokeError(Exception):
     meta: ToolInvokeMeta
 

api/core/tools/utils/workflow_configuration_sync.py

@@ -3,6 +3,8 @@ from typing import Any
 
 from core.app.app_config.entities import VariableEntity
 from core.tools.entities.tool_entities import WorkflowToolParameterConfiguration
+from core.tools.errors import WorkflowToolHumanInputNotSupportedError
+from core.workflow.enums import NodeType
 from core.workflow.nodes.base.entities import OutputVariableEntity
 
 
@@ -50,6 +52,13 @@ class WorkflowToolConfigurationUtils:
 
         return [outputs_by_variable[variable] for variable in variable_order]
 
+    @classmethod
+    def ensure_no_human_input_nodes(cls, graph: Mapping[str, Any]) -> None:
+        nodes = graph.get("nodes", [])
+        for node in nodes:
+            if node.get("data", {}).get("type") == NodeType.HUMAN_INPUT:
+                raise WorkflowToolHumanInputNotSupportedError()
+
     @classmethod
     def check_is_synced(
         cls, variables: list[VariableEntity], tool_configurations: list[WorkflowToolParameterConfiguration]