Module: MusicBrainz::ClientModules::CachingProxy

Included in:
MusicBrainz::Client
Defined in:
lib/musicbrainz/client_modules/caching_proxy.rb

Instance Method Summary collapse

Instance Method Details

#cache_path ⇒ Object 



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# File 'lib/musicbrainz/client_modules/caching_proxy.rb', line 4

def cache_path
  MusicBrainz.config.cache_path
end

#caching? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/musicbrainz/client_modules/caching_proxy.rb', line 32

def caching?
  MusicBrainz.config.perform_caching
end

#clear_cache ⇒ Object 



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# File 'lib/musicbrainz/client_modules/caching_proxy.rb', line 8

def clear_cache
  FileUtils.rm_r(cache_path) if cache_path && File.exist?(cache_path)
end

#get_contents(url) ⇒ Object 



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# File 'lib/musicbrainz/client_modules/caching_proxy.rb', line 12

def get_contents(url)
  return super unless caching?

  hash = Digest::SHA256.hexdigest(url)
  dir_path = [cache_path, *(0..2).map{ |i| hash.slice(2*i, 2) }].join(?/)
  file_path = [dir_path, '/', hash.slice(6, 58), '.xml'].join

  response = { body: nil, status: 500 }

  if File.exist?(file_path)
    get_cached_contents(file_path)
  else
    response = get_live_contents(file_path, url)
    if response[:status] == 200
      cache_contents!(file_path, response[:body])
    end
    response
  end
end