AWS CloudFormation
User Guide (API Version 2010-05-15)

AWS IoT Analytics Dataset DeltaTime

The DeltaTime property type specifies a limit of data to that which has arrived since the last execution of an action for an AWS IoT Analytics dataset.

DeltaTime is a property of the Filter property type.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{ "TimeExpression" : String, "OffsetSeconds" : Integer }

YAML

TimeExpression: String OffsetSeconds: Integer

Properties

TimeExpression

An expression by which the time of the message data may be determined. This may be the name of a timestamp field, or a SQL expression which is used to derive the time the message data was generated.

Required: Yes

Type: String

Update requires: No interruption

OffsetSeconds

The number of seconds of estimated "in flight" lag time of message data. When you create data set contents using message data from a specified time frame, some message data may still be "in flight" when processing begins, and so will not arrive in time to be processed. Use this field to make allowances for the "in flight" time of your message data, so that data not processed from a previous time frame will be included with the next time frame. Without this, missed message data would be excluded from processing during the next time frame as well, because its timestamp places it within the previous time frame.

Required: Yes

Type: Integer

Update requires: No interruption

See Also

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