Log

Learn about the Log OTTL converter function.

  less than a minute  

The Log converter calculates the natural logarithm (base e) of a value.

Syntax: Log(value)

  • value: a numeric field to calculate the logarithm of

Input

{
	"_type": "log",
	"body": "Performance metrics calculated",
	"resource": {...},
	"attributes": {
		"response_time": 2.718,
		"error_rate": 10,
		"throughput": 100
	}
}

Statement

set(attributes["log_response"], Log(attributes["response_time"]))
set(attributes["log_error"], Log(attributes["error_rate"]))
set(attributes["log_throughput"], Log(attributes["throughput"]))

Output

{
	"_type": "log",
	"body": "Performance metrics calculated",
	"resource": {...},
	"attributes": {
		"response_time": 2.718,
		"error_rate": 10,
		"throughput": 100,
		"log_response": 1.0,
		"log_error": 2.302585093,
		"log_throughput": 4.605170186
	}
}

The natural logarithm was calculated for each numeric value.