Is there way to push NewRelic error manually?

Question

In our Rails app we rescue most of the exceptions on ApplicationController to give correct API response, but still want to track errors happening using ErrorCollector. Is there a way to manually send error to NewRelic?

Elbrus

Answer 1

Based on what I see in the New Relic agent code you can do

NewRelic::Agent.notice_error(exception, options)

I have tested this and have this running in my stack

Here's an example in a controller:

class ApplicationController < ActionController::Base
  rescue_from ActiveRecord::RecordInvalid, with: :rescue_invalid_record

  private

  def rescue_invalid_record(exception)
    NewRelic::Agent.notice_error(exception)
  end
end

Acreinch

Here's the documentation for this: rdoc.info/github/newrelic/rpm/NewRelic/Agent:notice_error It's basically an alias to the method Igor included in his solution, except it returns nil instead of the exception. So while it behaves a little differently, it's essentially the same thing and much less verbose. – Otiliaotina

To add more context I precede that with: NewRelic::Agent.add_custom_attributes({ custom_params: params.to_unsafe_h.merge(current_user: current_user.id), uri: request.original_url }) – Mcfadden

Answer 2

Not sure if it's recommended way to use, but this works perfectly:

NewRelic::Agent.agent.error_collector.notice_error( exception )

Elbrus

I work at New Relic. While this method may work today, it is not part of our public API, and thus shouldn't be used - it may change at any point in the future. The correct method to use is NewRelic::Agent.notice_error, as noted in nort's response. Anything that's not documented in our public API docs falls into the same category. – Brythonic

Answer 3

Full documentation of the API call to notice errors and increment the error metric is the New Relic Ruby Agent API documentation here http://rdoc.info/github/newrelic/rpm/NewRelic/Agent/Transaction.notice_error

Digression