Description:

Monitors the flow for activity and sends out an indicator when the flow has not had any data for some specified amount of time and again when the flow’s activity is restored

Tags:

monitor, flow, active, inactive, activity, detection

Properties:

In the list below, the names of required properties appear in bold. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the Expression Language Guide.

Name	Default Value	Allowable Values	Description
Threshold Duration	5 min		Determines how much time must elapse before considering the flow to be inactive
Continually Send Messages	false	* true * false	If true, will send inactivity indicator continually every Threshold Duration amount of time until activity is restored; if false, will send an indicator only when the flow first becomes inactive
Inactivity Message	Lacking activity as of time: ${now():format('yyyy/MM/dd HH:mm:ss')}; flow has been inactive for ${inactivityDurationMillis:toNumber():divide(60000)} minutes		The message that will be the content of FlowFiles that are sent to the 'inactive' relationship Supports Expression Language: true
Activity Restored Message	Activity restored at time: ${now():format('yyyy/MM/dd HH:mm:ss')} after being inactive for ${inactivityDurationMillis:toNumber():divide(60000)} minutes		The message that will be the content of FlowFiles that are sent to 'activity.restored' relationship Supports Expression Language: true
Copy Attributes	false	* true * false	If true, will copy all flow file attributes from the flow file that resumed activity to the newly created indicator flow file

Relationships:

Name	Description
activity.restored	This relationship is used to transfer an Activity Restored indicator when FlowFiles are routing to 'success' following a period of inactivity
inactive	This relationship is used to transfer an Inactivity indicator when no FlowFiles are routed to 'success' for Threshold Duration amount of time
success	All incoming FlowFiles are routed to success

Reads Attributes:

None specified.

Writes Attributes:

Name	Description
inactivityStartMillis	The time at which Inactivity began, in the form of milliseconds since Epoch
inactivityDurationMillis	The number of milliseconds that the inactivity has spanned