[QUESTION] How to cache OAuth2::AccessToken?

Created by: aesyondu

I'm doing something like this:

token = Rails.cache.fetch(CACHE_KEY.to_s, expires_in: 1.hour) do
  client = OAuth2::Client.new(CLIENT_ID, CLIENT_SECRET,
                              site: SITE,
                              token_url: OAUTH_ENDPOINT)
  client.client_credentials.get_token
end

But it throws an error:

TypeError (no _dump_data is defined for class OpenSSL::X509::Store):

I'm only doing it because I want to reuse the access token and not request a new one for every request. Is there a better way to store the token?

---

Right now my workaround is to_hash:

client = OAuth2::Client.new(CLIENT_ID, CLIENT_SECRET,
                            site: SITE,
                            token_url: OAUTH_ENDPOINT)

token_hash = Rails.cache.fetch(CACHE_KEY.to_s + 'abc', expires_in: 1.hour) do
  client.client_credentials.get_token.to_hash
end

token = OAuth2::AccessToken.new client, token_hash

if token.expired?
  token_hash = Rails.cache.fetch(CACHE_KEY.to_s, expires_in: 1.hour, force: true) do
    client.client_credentials.get_token
  end

  OAuth2::AccessToken.new client, token_hash
else
  token
end