[BUG][RUBY] Faraday::ConnectionFailed not handled

Created by: jethrodaniel

Description

The Ruby client, when built with the faraday library option, currently doesn't handle Faraday::ConnectionFailed issues (i.e, server is down).

openapi-generator version

openapitools/openapi-generator-cli:v6.2.0

Generation Details

Relevant portion of openapi-generator-config.yaml :

library: faraday
gemRequiredRubyVersion: '>= 2.7'

Suggest a fix

Fix is simple, just rescue Faraday::ConnectionFailed here: https://github.com/OpenAPITools/openapi-generator/blob/24f476a38161a797c773577cab775ef285baeaba/modules/openapi-generator/src/main/resources/ruby-client/api_client_faraday_partial.mustache#L27-L29

i.e,

        rescue Faraday::TimeoutError
          fail ApiError.new('Connection timed out')
        rescue Faraday::ConnectionFailed
          fail ApiError.new('Connection failed')
        end