Use the Arithmetic Processor to add a new attribute (without spaces or special characters in the new attribute name) to a log with the result of the provided formula. This enables you to remap different time attributes with different units into a single attribute, or to compute operations on attributes within the same log.

The formula can use parentheses and the basic arithmetic operators -, +, *, /.

By default, the calculation is skipped if an attribute is missing. Select “Replace missing attribute by 0” to automatically populate missing attribute values with 0 to ensure that the calculation is done. An attribute is missing if it is not found in the log attributes, or if it cannot be converted to a number.

Notes:

  • The operator - needs to be space split in the formula as it can also be contained in attribute names.
  • If the target attribute already exists, it is overwritten by the result of the formula.
  • Results are rounded up to the 9th decimal. For example, if the result of the formula is 0.1234567891, the actual value stored for the attribute is 0.123456789.
  • If you need to scale a unit of measure, see Scale Filter.

Hierarchy

  • LogsArithmeticProcessor

Constructors

Properties

additionalProperties?: {
    [key: string]: any;
}

A container for additional, undeclared properties. This is a holder for any undeclared properties as specified with the 'additionalProperties' keyword in the OAS document.

Type declaration

  • [key: string]: any
expression: string

Arithmetic operation between one or more log attributes.

isEnabled?: boolean

Whether or not the processor is enabled.

isReplaceMissing?: boolean

If true, it replaces all missing attributes of expression by 0, false skip the operation if an attribute is missing.

name?: string

Name of the processor.

target: string

Name of the attribute that contains the result of the arithmetic operation.

Type of logs arithmetic processor.

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