Workaround for Bundler.require error when executing ruby with crontab

What to write in this article

In the previous article, I wrote about what I called a shell script with cron and stumbled when running ruby. Actually, I was stumbling on another one, so I will output it so as not to forget its contents. About the error that I got when doing Bundler.require in the ruby file.

Referenced site: bow: Thank you.

-If you run Ruby with crontab, private method `require'called for Bundler: Module

Conclusion

You can cd to the directory where the Gemfile is located and then run ruby. But I don't understand it properly.

/home/user_name/ruby_test.sh

#!/bin/bash
cd /home/user_name/sample && ruby /home/user_name/sample/tasks/test_ruby.rb

What happened

Situation arrangement

crontab

00 13 * * * /bin/bash /home/user_name/ruby_test.sh > /home/user_name/log/ruby_test.log 2>&1

/home/user_name/ruby_test.sh

#!/bin/bash
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
rbenv shell 2.7.1
ruby /home/user_name/sample/tasks/test_ruby.rb

/home/user_name/sample/tasks/test_ruby.rb

require 'bundler/setup'
Bundler.require

#The ruby process continues below

The executed script. Looking at the log file, there is some error. ..

/home/user_name/log/ruby_test.log

/home/user_name/sample/tasks/test_ruby.rb:2:in `<main>': private method `require' called for Bundler:Module (NoMethodError)

It doesn't seem to be working.

But

cd /home/user_name/sample
ruby /tasks/test_ruby.rb

If you execute, you can execute it without any error.

I didn't understand why, but

https://github.com/rubygems/bundler/blob/master/lib/bundler.rb#L173

Bundler.require I decided to see what he was doing.

bundler/lib/bundler.rb

def require(*groups)
  setup(*groups).require(*groups)
end

Let's follow what setup is.

https://github.com/rubygems/bundler/blob/35be6d9a603084f719fec4f4028c18860def07f6/lib/bundler.rb#L139

bundler/lib/bundler.rb

def setup(*groups)
   # Return if all groups are already loaded
   return @setup if defined?(@setup) && @setup 

   definition.validate_runtime!

   SharedHelpers.print_major_deprecations!
   if groups.empty?
     # Load all groups, but only once
     @setup = load.setup
   else
     load.setup(*groups)
   end
end

This time I'm calling with no arguments @ setup = load.setup is likely to be called.

bundler/lib/bundler.rb

def load
  @load ||= Runtime.new(root, definition)
end

bundler/lib/bundler/runtime.rb

def setup(*groups)
   @definition.ensure_equivalent_gemfile_and_lockfile if Bundler.frozen_bundle?

   groups.map!(&:to_sym)

   # Has to happen first
   clean_load_path

   specs = groups.any? ? @definition.specs_for(groups) : requested_specs

   SharedHelpers.set_bundle_environment
   Bundler.rubygems.replace_entrypoints(specs)

   # Activate the specs
   load_paths = specs.map do |spec|
     unless spec.loaded_from
       raise GemNotFound, "#{spec.full_name} is missing. Run `bundle install` to get it."
     end

     check_for_activated_spec!(spec)

     Bundler.rubygems.mark_loaded(spec)
     spec.load_paths.reject {|path| $LOAD_PATH.include?(path) }
   end.reverse.flatten

   Bundler.rubygems.add_to_load_path(load_paths)

   setup_manpath

   lock(:preserve_unknown_sections => true)

   self
end

I can't call it require in the first place. I realize that looking ahead will only help me study. I get an error saying that it is a private method, but it does not look like a private method. Are you just looking at the wrong place? ?? ?? ?? ??

Note: Bundler is now an archive. It seems better to use rubygems.

I'll read it again when I have time, I still don't understand exactly where the error is being returned and why it happened. .. : disappointed:

Anyway, I knew that it would work if I cd, so I'll try writing it that way.

/home/user_name/ruby_test.sh

#!/bin/bash
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
rbenv shell 2.7.1

cd /home/user_name/sample && ruby /home/user_name/sample/tasks/test_ruby.rb

I don't understand it properly, but it worked. .. .. : thinking: I don't understand it. Weekend homework. .. I will continue to investigate for the time being. : notebook:: runner:

If you have any kind people, I would be grateful if you could let me know in the comments. : bow:

Thank you for reading. : bow: