Error in grape instrumentation about newrelic-ruby-agent

[tannalynn]

Hello @fidalgo !
So, we don’t officially support Grape 1.3.0 in the agent yet, but from our testing we believe it should be working for you. What you’re seeing doesn’t appear to be an issue with the agent, it’s saying that it can’t instrument specific grape calls. This is likely because env is nil when it gets here https://github.com/newrelic/rpm/blob/29bc3e0bf6f4d11b21ced7fc38916b9e41f3a680/lib/new_relic/agent/instrumentation/grape.rb#L128-L129
So the next step would be to investigate in your code why env would be nil in this case.

[mwlang]

@fidalgo I think your issue may be related to recent changes in Rack. please try setting your rack version to < 2.1.0 in your Gemfile like so:

gem 'rack', '< 2.1.0'

This is a known issue with Grape. I think the latest versions of Grape and Rack fixes, but it's currently untested by us. We do know Grape 1.3.0 works with older versions of Rack, hence the recommendation above to try first.

I am closing this issue with this comment, but if you find it doesn't resolve your issue, please reopen or escalate through our support channel where we can collect more information about your specific versions and environment to diagnose further.

[magni-]

So, we don’t officially support Grape 1.3.0 in the agent yet

Is Grape 1.3 (or 1.4) support planned?

We are seeing the same issue on Grape 1.3.3 + Rack 2.2.3, and would rather not downgrade either of these two dependencies.