Error: uninitialized class variable @@schemes

[DannyBen]

Just running redis-dump generates this error for me:

/home/vagrant/.rbenv/versions/3.1.3/lib/ruby/gems/3.1.0/gems/uri-redis-0.4.2/lib/uri/redis.rb:93:in `<module:URI>': uninitialized class variable @@schemes in URI (NameError)
Did you mean?  scheme_list
        from /home/vagrant/.rbenv/versions/3.1.3/lib/ruby/gems/3.1.0/gems/uri-redis-0.4.2/lib/uri/redis.rb:4:in `<top (required)>'
        from <internal:/home/vagrant/.rbenv/versions/3.1.3/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
        from <internal:/home/vagrant/.rbenv/versions/3.1.3/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
        from /home/vagrant/.rbenv/versions/3.1.3/lib/ruby/gems/3.1.0/gems/redis-dump-0.4.0/lib/redis/dump.rb:6:in `<top (required)>'
        from <internal:/home/vagrant/.rbenv/versions/3.1.3/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
        from <internal:/home/vagrant/.rbenv/versions/3.1.3/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
        from /home/vagrant/.rbenv/versions/3.1.3/lib/ruby/gems/3.1.0/gems/redis-dump-0.4.0/bin/redis-dump:18:in `<top (required)>'
        from /home/vagrant/.rbenv/versions/3.1.3/bin/redis-dump:25:in `load'
        from /home/vagrant/.rbenv/versions/3.1.3/bin/redis-dump:25:in `<main>'

on Ubuntu 20.04, Ruby 3.1.3

[serge-medvedev]

I also have this issue with Ruby 3.2.0.
Works with Ruby 3.0.5, though.

[DannyBen]

Seems like the problem is in the uri-redis gem (also by @delano), which was last updated in 2010, and that there is an open PR that fixes this issue: delano/uri-valkey#2

[delano]

delano/uri-valkey#2 is merged and a new (pre-release) is available via github and rubygems:

https://github.com/delano/uri-redis/releases/tag/v1.0.0-RC2
https://rubygems.org/gems/uri-redis/versions/1.0.0.pre.RC2

  $ gem install --pre uri-redis

Please let me know here if you have any related issues with this release.

[DannyBen]

Thanks.

For me, just installing the pre version of uri-redis did not fix it.
But when running bundle exec redis-dump in a folder with the below Gemfile, it works.

source "https://rubygems.org"

gem "redis-dump"
gem "uri-redis",  '1.0.0.pre.RC2'

[delano]

Ah yeah, that makes sense. Bundler weaves all the explicit dependencies together. Thanks for the follow-up.

I'll push an update to redis-dump today. In the meantime I bumped uri-redis up to 1.0: https://github.com/delano/uri-redis/releases/tag/v1.0.0.

[DannyBen]

Excellent, thanks.

[ggboles]

what are you takiking aboute, so what Should i do?