ListToMap

This processor takes a list of objects that contain key fields, and converts them into a map of target keys.

For more information about this processor including examples, see listToMap in the CloudWatch Logs User Guide.

key

The key of the field to be extracted as keys in the generated map

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Required: Yes

source

The key in the log event that has a list of objects that will be converted to a map.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Required: Yes

flatten

A Boolean value to indicate whether the list will be flattened into single items. Specify true to flatten the list. The default is false

Type: Boolean

Required: No

flattenedElement

If you set flatten to true, use flattenedElement to specify which element, first or last, to keep.

You must specify this parameter if flatten is true

Type: String

Valid Values: first | last

Required: No

target

The key of the field that will hold the generated map

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Required: No

valueKey

If this is specified, the values that you specify in this parameter will be extracted from the source objects and put into the values of the generated map. Otherwise, original objects in the source list will be put into the values of the generated map.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Required: No

ListToMap

Contents

See Also