Class: Rack::Session::Redis
- Inherits:
-
Abstract::ID
- Object
- Abstract::ID
- Rack::Session::Redis
- Defined in:
- lib/rack/session/redis.rb
Constant Summary collapse
- DEFAULT_OPTIONS =
Abstract::ID::DEFAULT_OPTIONS.merge( :redis_server => 'redis://127.0.0.1:6379/0/rack:session' )
Instance Attribute Summary collapse
-
#mutex ⇒ Object
readonly
Returns the value of attribute mutex.
Instance Method Summary collapse
- #destroy_session(env, session_id, options) ⇒ Object
- #generate_unique_sid(session) ⇒ Object
- #get_session(env, sid) ⇒ Object
-
#initialize(app, options = {}) ⇒ Redis
constructor
A new instance of Redis.
- #set_session(env, session_id, new_session, options) ⇒ Object
- #threadsafe? ⇒ Boolean
- #with(&block) ⇒ Object
- #with_lock(env, default = nil) ⇒ Object
Constructor Details
#initialize(app, options = {}) ⇒ Redis
Returns a new instance of Redis.
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# File 'lib/rack/session/redis.rb', line 15 def initialize(app, = {}) super @mutex = Mutex.new @conn = ::Redis::Rack::Connection.new(@default_options) end |
Instance Attribute Details
#mutex ⇒ Object (readonly)
Returns the value of attribute mutex.
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# File 'lib/rack/session/redis.rb', line 9 def mutex @mutex end |
Instance Method Details
#destroy_session(env, session_id, options) ⇒ Object
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# File 'lib/rack/session/redis.rb', line 54 def destroy_session(env, session_id, ) with_lock(env) do with { |c| c.del(session_id) } generate_sid unless [:drop] end end |
#generate_unique_sid(session) ⇒ Object
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# File 'lib/rack/session/redis.rb', line 22 def generate_unique_sid(session) return generate_sid if session.empty? loop do sid = generate_sid first = with do |c| [*c.setnx(sid, session, @default_options)].first end break sid if [1, true].include?(first) end end |
#get_session(env, sid) ⇒ Object
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# File 'lib/rack/session/redis.rb', line 33 def get_session(env, sid) if env['rack.session.options'][:skip] [generate_sid, {}] else with_lock(env, [nil, {}]) do unless sid and session = with { |c| c.get(sid) } session = {} sid = generate_unique_sid(session) end [sid, session] end end end |
#set_session(env, session_id, new_session, options) ⇒ Object
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# File 'lib/rack/session/redis.rb', line 47 def set_session(env, session_id, new_session, ) with_lock(env, false) do with { |c| c.set session_id, new_session, } session_id end end |
#threadsafe? ⇒ Boolean
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# File 'lib/rack/session/redis.rb', line 61 def threadsafe? @default_options.fetch(:threadsafe, true) end |
#with(&block) ⇒ Object
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# File 'lib/rack/session/redis.rb', line 78 def with(&block) @conn.with(&block) end |
#with_lock(env, default = nil) ⇒ Object
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# File 'lib/rack/session/redis.rb', line 65 def with_lock(env, default=nil) @mutex.lock if env['rack.multithread'] && threadsafe? yield rescue Errno::ECONNREFUSED if $VERBOSE warn "#{self} is unable to find Redis server." warn $!.inspect end default ensure @mutex.unlock if @mutex.locked? end |