Install gem while running OOD

[andrejcermak]

Hi, we have a running development instance of OOD and want to modify an adapter by adding fog-openstack gem. How can we do this? I tried adding

spec.add_runtime_dependency "fog-openstack", "~> 1.1.5"

to the ood_core.gemspec file and restarting Apache, but this didn't work.

[johrstrom]

I think you'd just want to install the gem and if you hit code that depends on it, it'll find it in the LOAD_PATH.

To install the gem (IIRC) you have to source /opt/ood/enable && gem install fog-openstack -v 1.1.5

[andrejcermak]

Hi, I guess you meant /opt/ood/ondemand/enable and then install. I tried this but it's still not working. When I output LOAD_PATH using puts $LOAD_PATH the gem is not listed there.

A chatbot suggested manually adding the path by $:.unshift('/opt/ood/gems/gems/fog-openstack-1.1.5/lib') which indeed does add the path to LOAD_PATH, but doesn't help and the adapter is still failing to be loaded.

[johrstrom]

Oh note that you have to 'restart your webserver' in the top right of your navigation bar. bouncing apache2/httpd doesn't do anything here, but bouncing your per user nginx will pick up new configurations.

[johrstrom]

There's also this reference ticket in OnDemand - OSC/ondemand#3452. In my entire enture I've avoided using scl but it could be there's some slight difference in source ... and scl ... that gets this to work.

[andrejcermak]

okay, that reference helped. i manage to call require 'fog/openstack' with no error after adding following lines to my adapter

Dir.glob('/var/lib/gems/3.1.0/gems/*').each do |dir|
  if File.directory?(dir) && dir.end_with?('-lib') == false
    $LOAD_PATH.unshift("#{dir}/lib")
  end
end

I am pretty sure this is not the way it should be, but for now im goind to use it. Do you have any idea how to bypass this?

[johrstrom]

Do you have any idea how to bypass this?

I feel like we have to fix the OOD behavior. I think you'll still have to install the gem out of bounds, but at least require 'fog/openstack' should just work if you've added the gem. I just don't think we have a good/stable way for you to add the gem.