app.rb code not finding my required files

[davidlbean]

Hmmm...I refactored my largish app.rb into several files. At the top of my app.rb file, I try to require these other files, and ruby can't find them. I've tried

require './my_class.rb'

and

require_relative 'my_class.rb'

but neither seem to work. Here's what I get in the log files:

2017-01-21T00:28:06.308Z 7720d3b8-df70-11e6-89f4-35cd4eb32432 stderr:
: cannot load such file -- /var/task/lib/app/my_class.rb (LoadError)
from /var/task/lib/app/app.rb:5:in `<main>'

What's the proper way to reference my own code files from app.rb? Apologies if I'm missing something blatantly obvious to everyone else.

lorennorman: btw, thanks for creating this little package...it's super! I was forcing myself to jump through all sorts of node.js hoops and it was driving me crazy. I'm so much happier in the Ruby world.

[foggy1]

Having a similar issue but with trying to require nokogiri. It seems to be compiling the extensions right and entering nokogiri.bundle into nokogiri/nokogiri, but when nokogiri rb comes to require 'nokogiri/nokogiri' I get

/var/task/lib/vendor/ruby/2.1.0/gems/nokogiri-1.6.6.2/lib/nokogiri.rb:29:in require': cannot load such file -- nokogiri/nokogiri`

[tmhammer]

I ran into the same issue using require, but using require_relative worked for me.

However I am also having the same issue loading Nokogiri.

[lorennorman]

Nokogiri is a native gem, which I mention being problematic in the README.

Think about it: you bundle everything up locally (OSX? Ubuntu? Windows?) and send it off to be executed elsewhere (Amazon Linux, specifically.) Well, a gem that has been compiled against OSX isn't going to work in Amazon Linux. You'd need to compile that one in an Amazon Linux instance. Which is probably possible? But certainly not something I bit off in this initial proof-of-concept. (But certainly something I'd like to see done!)

Please do investigate.

[foggy1]

Thanks for the reply, @lorennorman. What impressed me was that nokogiri actually did appear to be building off of the extensions and putting things in the correct place; but, there was obviously no substitute for the native stuff that's required (I think on mac it needs to run against some xcode stuff).

[lorennorman]

No worries!

Yeah this stuff can be kind of fraught with confusion, but I'm seeing other tools appear that are improving the experience. I'm looking at ClaudiaJS https://claudiajs.com/ for a thing I'm working on right now at work. Perhaps I'll bring some of the learnings from it back here and make something similar for Ruby soon.

[fagiani]

@lorennorman @foggy1 @tmhammer I'd like to report here that usingrequire_relative has actually resolved for project dependencies and creating a EC2 box with Amazon Linux got me nokogiri working fine on Lambda but I'm facing a weird one with activerecord and pg gems. I'm posting the logs of a test here in the hopes someone has been there before and could help:

START RequestId: feab102b-5da5-11e7-bf18-739c73eb4ef0 Version: $LATEST
2017-06-30T15:08:39.144Z	feab102b-5da5-11e7-bf18-739c73eb4ef0	Starting process: ./app
2017-06-30T15:08:51.403Z	feab102b-5da5-11e7-bf18-739c73eb4ef0	stderr:
/var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
2017-06-30T15:08:51.403Z	feab102b-5da5-11e7-bf18-739c73eb4ef0	stderr:
: Could not load 'active_record/connection_adapters/postgresql_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. (LoadError)
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/pg-0.21.0/lib/pg.rb:4:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:17:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/connection_specification.rb:175:in `spec'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_handling.rb:50:in `establish_connection'
from /var/task/lib/app/app.rb:12:in `<main>'

2017-06-30T15:08:51.744Z	feab102b-5da5-11e7-bf18-739c73eb4ef0	{"errorMessage":"Process \"./app\" exited with code: 1"}
END RequestId: feab102b-5da5-11e7-bf18-739c73eb4ef0

[fagiani]

I've found the error above to be misleading as activerecord will rescue and customize the error. The actual exception is linked to the pg_ext.so which does exists on the absolute path listed but I'm guessing there is some kind of missing native libraries would be the real error reason which I've been unable to figure out so far.

START RequestId: a9e88496-6005-11e7-924c-e7c37f2df3e0 Version: $LATEST
2017-07-03T15:38:30.977Z	a9e88496-6005-11e7-924c-e7c37f2df3e0	Starting process: ./app
2017-07-03T15:38:42.337Z	a9e88496-6005-11e7-924c-e7c37f2df3e0	stderr:
/var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
2017-07-03T15:38:42.456Z	a9e88496-6005-11e7-924c-e7c37f2df3e0	stderr:
: libpq.so.5: cannot open shared object file: No such file or directory - /var/task/lib/vendor/ruby/2.1.0/extensions/x86_64-linux/2.1.0-static/pg-0.21.0/pg_ext.so - libpq.so.5: cannot open shared object file: No such file or directory - /var/task/lib/vendor/ruby/2.1.0/extensions/x86_64-linux/2.1.0-static/pg-0.21.0/pg_ext.so - Could not load 'active_record/connection_adapters/postgresql_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. (LoadError)
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/pg-0.21.0/lib/pg.rb:4:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:17:in `<top (required)>'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `block in require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency'
from /var/task/lib/vendor/ruby/2.1.0/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:274:in `require'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_adapters/connection_specification.rb:175:in `spec'
from /var/task/lib/vendor/ruby/2.1.0/gems/activerecord-4.2.9/lib/active_record/connection_handling.rb:50:in `establish_connection'
from /var/task/lib/app/app.rb:12:in `<main>'

2017-07-03T15:38:42.676Z	a9e88496-6005-11e7-924c-e7c37f2df3e0	{"errorMessage":"Process \"./app\" exited with code: 1"}
END RequestId: a9e88496-6005-11e7-924c-e7c37f2df3e0

I'd appreciate if anyone finds any obvious hits that I might be missing on those lines.

[fagiani]

I've just figured the resolution for this issue. Posted the answer here for the record if anybody else gets trapped on this.

Hope that helps!

[lorennorman]

Nice work getting it fixed and following up with your progress, thank you!

On Mon, Jul 3, 2017 at 5:38 PM Paulo Fagiani [email protected] wrote:

I've just figured the resolution for this issue. Posted the answer here https://stackoverflow.com/a/44894150/1463744 for the record if anybody else gets trapped on this.

Hope that helps!

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