Connecting with Ruby Spotify Gem Hangs

[Shawn Broukhim]

I have been trying to connect with the Spotify gem, have followed the documentation, but whenever I make a request it just hangs...

Here is the code I am working with:

I have created a Spotify Api Service Object which attempts to connect on initialization:

class SpotifyApiUtility
  require "bundler/setup"
  require "spotify"
  require "logger"
  require "pry"
  require "io/console"

 def initialize

  @config = Spotify::SessionConfig.new({
    api_version: Spotify::API_VERSION.to_i,
    application_key: File.binread("#{Rails.root}/app/services/spotify_appkey.key"),
    cache_location: "#{Rails.root}/app/services/spotify/",
    settings_location: "#{Rails.root}/app/services/spotify/",
    user_agent: "spotify for ruby",
    callbacks: Spotify::SessionCallbacks.new,
  })

  session = Spotify.session_create(@config)
  raise Spotify::APIError.new(error) if error
end

end

The session never gets created though, and it really just freezes. Does anyone have any suggestions about what I might be doing wrong?

[Kim Burgestrand]

Have you managed to get any of the examples to work, or have you managed to get this code to work outside of Rails?

I can't see anything immediately broken with this, but I could of course be wrong.

— Kim Burgestrand

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[Kim Burgestrand]

You'll also need to keep the session around. It's possible garbage collection is playing a prank on you. Store it in an instance variable at the very least.

— Kim Burgestrand

[Shawn Broukhim]

I haven't been able to get it to work on my system yet.  However, when I tried it on one of my colleague's computers it worked.  I am using Ruby version 2.1.2p95, my colleague's is an older build.  Could this be the root of the issue?

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[Kim Burgestrand]

While nothing is impossible, the ruby version (as long as it's >= 2.0) should not affect this. Just to make sure, I tried the examples on 2.1.4p265 and I can create a session just fine.

In the past, I've used the following session configuration to diagnose issues:

    {

      api_version: Spotify::API_VERSION.to_i,

      application_key: File.binread("./spotify_appkey.key"),

      cache_location: ".spotify/",

      settings_location: ".spotify/",

      user_agent: "spotifyrb",

      tracefile: "tracefile.txt",

      callbacks: Spotify::SessionCallbacks.new({

        log_message: lambda do |session, message|

          $stdout.print "[LOG] #{message}"

        end

      })

    }

The above session configuration will create a file named tracefile.txt, which is a log of all libspotify calls made. In addition, it will also print log messages from libspotify to stdout.

Since I can't reproduce the hanging myself, I can't do much. However, the log output in the tracefile, and the output from stdout, could help in tracking down if the hanging is inside libspotify, or if it is inside the ruby code of the Spotify gem. This is the first step to resolving the issue.

It would be interesting to know which operating system you are using as well.

— Kim Burgestrand

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