55 lines
1.5 KiB
Ruby
55 lines
1.5 KiB
Ruby
# -*- encoding: utf-8 -*-
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module MusicBrainz
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module Tools
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class Proxy
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@@last_query_time = 0
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@@query_interval = 1.5 # Min: 1.0 Safe: 1.5
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@@tries_limit = 5
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WEB_SERVICE_URL = 'http://musicbrainz.org/ws/2/'
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USER_AGENT = "gem musicbrainz (https://github.com/magnolia-fan/musicbrainz) @ " + Socket.gethostname
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def self.query_interval=(sec)
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@@query_interval = sec.to_f
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end
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def self.tries_limit=(num)
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@@tries_limit = num.to_i
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end
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def self.load(resourse, params = {})
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url = WEB_SERVICE_URL + resourse.to_s.gsub('_', '-') + '/' + (params[:id].to_s || '')
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params.delete(:id) unless params[:id].nil?
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url << '?' + params.map{ |k, v|
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k = k.to_s.gsub('_', '-')
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v = (v.is_a?(Array) ? v.map{ |_| _.to_s.gsub('_', '-') }.join('+') : v.to_s)
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k + '=' + v
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}.join('&') unless params.empty?
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MusicBrainz::Tools::Cache.cache_contents(url) {
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self.get_contents url
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}
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end
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def self.get_contents(url)
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response = nil
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@@tries_limit.times {
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time_passed = Time.now.to_f - @@last_query_time
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sleep(@@query_interval - time_passed) if time_passed < @@query_interval
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begin
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response = open(url, "User-Agent" => USER_AGENT)
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@@last_query_time = Time.now.to_f
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rescue => e
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response = nil if e.io.status[0].to_i == 404
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end
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break unless response.nil?
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}
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response
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end
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end
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end
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end
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