Unable to load application

[Casara]

When upgrading from version 2.16.0 to 3.0.2 this happened:

[5102] Puma starting in cluster mode...
[5102] * Version 3.0.2 (ruby 2.3.0-p0), codename: Plethora of Penguin Pinatas
[5102] * Min threads: 1, max threads: 6
[5102] * Environment: development
[5102] * Process workers: 1
[5102] * Preloading application
[5102] ! Unable to load application: NoMethodError: undefined method `fetch' for #<Puma::LeveledOptions:0x00000002ffa8a0>

[evanphx]

Are you doing '@options.fetch' in your config file?

[Casara]

I had the following code in an initializer:

Puma.cli_config.options.fetch(:max_threads)

So I did the following:

Puma.cli_config.options[:max_threads]

But Anyway thanks!

[evanphx]

@Casara Why are you reading the max threads? Also, in 3.0+, you can do get(:max_threads) in the config files to read that value.

[Casara]

@evanphx I'm reading the max threads to set ActiveRecord connection pool size: UPDATED - Setting ActiveRecord's connection pool size on Heroku with Puma or Sidekiq.