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Factor out unique id generator. Expose cgi to session store.
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6174 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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1 changed files with 25 additions and 13 deletions
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@ -3,28 +3,40 @@
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# when serving requests from a long-lived process.
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#
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# http://railsexpress.de/blog/articles/2005/11/22/speeding-up-the-creation-of-new-sessions
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#
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# Also expose the CGI instance to session stores.
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require 'cgi/session'
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require 'digest/md5'
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class CGI
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class Session #:nodoc:
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# Generate an MD5 hash including the time, a random number, the process id,
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# and a constant string. This is used to generate session ids but may be
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# reused elsewhere.
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def self.generate_unique_id(constant = 'foobar')
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md5 = Digest::MD5.new
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now = Time.now
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md5 << now.to_s
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md5 << String(now.usec)
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md5 << String(rand(0))
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md5 << String($$)
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md5 << constant
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md5.hexdigest
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end
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# Make the CGI instance available to session stores.
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attr_reader :cgi
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alias_method :initialize_without_cgi_reader, :initialize
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def initialize(cgi, options = {})
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@cgi = cgi
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initialize_without_cgi_reader(cgi, options)
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end
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private
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# Create a new session id.
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#
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# The session id is an MD5 hash based upon the time,
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# a random number, and a constant string. This routine
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# is used internally for automatically generated
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# session ids.
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def create_new_id
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md5 = Digest::MD5::new
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now = Time::now
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md5.update(now.to_s)
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md5.update(String(now.usec))
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md5.update(String(rand(0)))
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md5.update(String($$))
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md5.update('foobar')
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@new_session = true
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md5.hexdigest
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self.class.generate_unique_id
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end
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end
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end
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