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judofyr/hack.rb

Created April 8, 2014 14:01
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hack.rb
def extract_session
envs = ObjectSpace.each_object(Hash).lazy.select { |env| env.key?("rack.version") && env.key?("rack.session") }
before = envs.to_a
GC.disable
yield
after = (envs.to_a - before)
raise "Could not extract session" unless after.size == 1
after.first['rack.session']
ensure
GC.enable
end
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