# deleteTopologyNode

A Workflow Engine function that deletes a node in the named topology. The node name can be static or a substitution value. To substitute a value, use $(<attribute_name>). For example$(source). As a best practice, set 'first match only' for this action.

This function is available for alert workflows.

## Arguments

Workflow Engine function deleteTopologyNode takes the following arguments:

Name

Required

Type

Description

topologyName

yes

string

The name or substited value for the topology. To substitute a value, use $(<attribute_name>). For example$(custom_info.myTopology).

nodeName

yes

string

The name or substituted value for the 'A' endpoint (source node). To substitute a value, use $(<attribute_name>). For example$(custom_info.node).

## Example

The following example demonstrates typical use of Workflow Engine function deleteTopologyNode.

If you want to delete a node in the topology "My Network" for alert source, set the following:

• topologyName: my network

• )sourceNode: $(source) The UI translates your settings to the following JSON: {"topologyName":"my network","nodeName":"$(source)"}

For an alert where source = sflinux101, the action deletes the node.