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| -rw-r--r-- | actionpack/CHANGELOG | 3 | ||||
| -rw-r--r-- | actionpack/lib/action_controller/session/mem_cache_store.rb | 95 |
2 files changed, 98 insertions, 0 deletions
diff --git a/actionpack/CHANGELOG b/actionpack/CHANGELOG index ec269757ae..8b07c13dbb 100644 --- a/actionpack/CHANGELOG +++ b/actionpack/CHANGELOG @@ -1,5 +1,8 @@ *SVN* +* Added MemCacheStore for storing session data in Danga's MemCache system [Bob Cottrell] + Depends on: MemCached server (http://www.danga.com/memcached/), MemCache client (http://raa.ruby-lang.org/project/memcache/) + * Fixed redirects when the controller and action is named the same. Still haven't fixed same controller, module, and action, though #201 [Josh] * Fixed problems with running multiple functional tests in Rails under 1.8.2 by including hack for test/unit weirdness diff --git a/actionpack/lib/action_controller/session/mem_cache_store.rb b/actionpack/lib/action_controller/session/mem_cache_store.rb new file mode 100644 index 0000000000..5dc8f3bfef --- /dev/null +++ b/actionpack/lib/action_controller/session/mem_cache_store.rb @@ -0,0 +1,95 @@ +# cgi/session/memcached.rb - persistent storage of marshalled session data +# +# == Overview +# +# This file provides the CGI::Session::MemCache class, which builds +# persistence of storage data on top of the MemCache library. See +# cgi/session.rb for more details on session storage managers. +# + +begin + require 'cgi/session' + require 'memcache' + + class CGI + class Session + # MemCache-based session storage class. + # + # This builds upon the top-level MemCache class provided by the + # library file memcache.rb. Session data is marshalled and stored + # in a memcached cache. + class MemCacheStore + def check_id(id) #:nodoc:# + /[^0-9a-zA-Z]+/ =~ id.to_s ? false : true + end + + # Create a new CGI::Session::MemCache instance + # + # This constructor is used internally by CGI::Session. The + # user does not generally need to call it directly. + # + # +session+ is the session for which this instance is being + # created. The session id must only contain alphanumeric + # characters; automatically generated session ids observe + # this requirement. + # + # +option+ is a hash of options for the initialiser. The + # following options are recognized: + # + # cache:: an instance of a MemCache client to use as the + # session cache. + # + # This session's memcache entry will be created if it does + # not exist, or retrieved if it does. + def initialize(session, options = {}) + id = session.session_id + unless check_id(id) + raise ArgumentError, "session_id '%s' is invalid" % id + end + @cache = options['cache'] + @session_key = "session:#{id}" + @hash = {} + end + + # Restore session state from the session's memcache entry. + # + # Returns the session state as a hash. + def restore + begin + @hash = @cache[@session_key] + rescue + # Ignore session get failures. + end + @hash = {} unless @hash + @hash + end + + # Save session state to the session's memcache entry. + def update + begin + @cache[@session_key] = @hash + rescue + # Ignore session update failures. + end + end + + # Update and close the session's memcache entry. + def close + update + end + + # Delete the session's memcache entry. + def delete + begin + @cache.delete(@session_key) + rescue + # Ignore session delete failures. + end + @hash = {} + end + end + end + end +rescue LoadError + # MemCache wasn't available so neither can the store be +end
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