Sidekiq: With Rails 5.1 and Ruby 2.4.0, Sidekiq configuration file causes undefined method each at startup

[wfried]

Ruby version: 2.4.0
Sidekiq / Pro / Enterprise version(s):
Sidekiq
Please include your initializer and any error message with the full backtrace.

I am moving from Delayed Job to Sidekiq in a Rails 5.1 project. I have a sidekiq.yml configuration file with the following contents:

:concurrency: 5
:queues:
  — mailers
  - default

This matches the expected format documented at https://github.com/mperham/sidekiq/wiki/Advanced-Options

However, when Sidekiq starts (e.g., locally with bundle exec sidekiq), it fails with this stack trace:

undefined method `each' for "— [mailers, 2] - [default, 2]":String
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:403:in `parse_queues'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:388:in `parse_config'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:222:in `setup_options'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:39:in `parse'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/bin/sidekiq:11:in `<top (required)>'
/Users/Will/.rbenv/versions/2.4.0/bin/sidekiq:22:in `load'
/Users/Will/.rbenv/versions/2.4.0/bin/sidekiq:22:in `<top (required)>'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli/exec.rb:74:in `load'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli/exec.rb:74:in `kernel_load'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli/exec.rb:27:in `run'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli.rb:335:in `exec'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor.rb:359:in `dispatch'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli.rb:20:in `dispatch'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor/base.rb:440:in `start'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli.rb:11:in `start'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/exe/bundle:32:in `block in <top (required)>'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/friendly_errors.rb:121:in `with_friendly_errors'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/exe/bundle:24:in `<top (required)>'
/Users/Will/.rbenv/versions/2.4.0/bin/bundle:22:in `load'
/Users/Will/.rbenv/versions/2.4.0/bin/bundle:22:in `<main>'

My initializer:

# config/initializers/sidekiq.rb
# See https://medium.com/@benhansen/setting-up-sidekiq-redis-on-aws-elastic-beanstalk-with-elasticache-2efeb32935fe

rails_root = Rails.root || File.dirname(__FILE__) + '/../..'
rails_env = Rails.env || 'development'
redis_config = YAML.load_file(rails_root.to_s + '/config/redis.yml')
redis_config.merge! redis_config.fetch(rails_env, {})
redis_config.symbolize_keys!
Sidekiq.configure_server do |config|
 config.redis = { url: "redis://#{redis_config[:host]}:#{redis_config[:port]}/12" }
end
Sidekiq.configure_client do |config|
 config.redis = { url: "redis://#{redis_config[:host]}:#{redis_config[:port]}/12" }
end)

Are you using an old version? No.
Have you checked the changelog to see if your issue has been fixed in a later version?
Yes

https://github.com/mperham/sidekiq/blob/master/Changes.md

[mperham]

Invalid yaml. I'd guess a tabs/spaces issue.

On May 3, 2017, at 10:14 PM, Will Friedman [e-mail] wrote:

Ruby version: 2.4.0
Sidekiq / Pro / Enterprise version(s):
Sidekiq
Please include your initializer and any error message with the full backtrace.

I am moving from Delayed Job to Sidekiq in a Rails 5.1 project. I have a sidekiq.yml configuration file with the following contents:

:concurrency: 5
:queues:
— mailers

• default
  This matches the expected format documented at https://github.com/mperham/sidekiq/wiki/Advanced-Options

However, when Sidekiq starts (e.g., locally with bundle exec sidekiq), it fails with this stack trace:

undefined method each' for "— [mailers, 2] - [default, 2]":String /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:403:inparse_queues'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:388:in parse_config' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:222:insetup_options'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/lib/sidekiq/cli.rb:39:in parse' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/sidekiq-5.0.0/bin/sidekiq:11:in /Users/Will/.rbenv/versions/2.4.0/bin/sidekiq:22:in load' /Users/Will/.rbenv/versions/2.4.0/bin/sidekiq:22:in /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli/exec.rb:74:in load' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli/exec.rb:74:inkernel_load'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli/exec.rb:27:in run' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli.rb:335:inexec'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor/command.rb:27:in run' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:ininvoke_command'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor.rb:359:in dispatch' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli.rb:20:indispatch'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/vendor/thor/lib/thor/base.rb:440:in start' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/cli.rb:11:instart'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/exe/bundle:32:in block in <top (required)>' /Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/lib/bundler/friendly_errors.rb:121:inwith_friendly_errors'
/Users/Will/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/bundler-1.14.6/exe/bundle:24:in <top (required)>' /Users/Will/.rbenv/versions/2.4.0/bin/bundle:22:inload'
/Users/Will/.rbenv/versions/2.4.0/bin/bundle:22:in `

'
My initializer:

config/initializers/sidekiq.rb

See https://medium.com/@benhansen/setting-up-sidekiq-redis-on-aws-elastic-beanstalk-with-elasticache-2efeb32935fe

rails_root = Rails.root || File.dirname(__FILE__) + '/../..'
rails_env = Rails.env || 'development'
redis_config = YAML.load_file(rails_root.to_s + '/config/redis.yml')
redis_config.merge! redis_config.fetch(rails_env, {})
redis_config.symbolize_keys!
Sidekiq.configure_server do |config|
config.redis = { url: "redis://#{redis_config[:host]}:#{redis_config[:port]}/12" }
end
Sidekiq.configure_client do |config|
config.redis = { url: "redis://#{redis_config[:host]}:#{redis_config[:port]}/12" }
end)
Are you using an old version? No.
Have you checked the changelog to see if your issue has been fixed in a later version?
Yes

https://github.com/mperham/sidekiq/blob/master/Changes.md

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[wfried]

Thanks for your quick response, and for a great product. I know YAML needs spaces not tabs. I am using Sublime 3 with translate_tabs_to_spaces set on, and I've confirmed that these are spaces. I'm doing the same thing here that I'm doing in my other YAML files and I don't have an issue with them. When I cut and paste my file into http://www.yamllint.com/, it says it is valid YAML.

If you have any ideas please let me know. Thanks for your time.

[mikegee]

That dash in front of "mailers" isn't ASCII.

[wfried]

Wow, good catch. Thanks!