New Relic Logrus Hook

This is a simple logrus hook that lets existing logrus applications hook into New Relic error reporting using the New Relic Go Agent.

New Relic relies on having errors associated witha transaction. But logrus doesn't know which transaction its being called from. So currently this hook plugin just creates a new transaction called errorTxn and reports logged errors under that transaction. They show up just like any other reported errors. If any fields are supplied to the log line via WithFields, they are reported as custom attributes on the errorTxn and will be visible in New Relic.

Usage

You can install this like any other logrus hook. Assuming that application is your newrelic.Application from the Go agent, you can "hook" it up like this:

log.AddHook(
	newrelic_logrus.NewNewRelicLogrusHook(
		application,
		[]log.Level{log.ErrorLevel, log.FatalLevel},
	),
)