Class: Wakame::EventDispatcher
- Inherits:
-
Object
- Object
- Wakame::EventDispatcher
show all
- Includes:
- ThreadImmutable
- Defined in:
- lib/wakame/event_dispatcher.rb
Class Method Summary
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Instance Method Summary
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#bind_thread, included, #target_thread, #target_thread?, #thread_check
Constructor Details
Returns a new instance of EventDispatcher.
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# File 'lib/wakame/event_dispatcher.rb', line 34
def initialize
@event_handlers = {}
@tickets = {}
@unsubscribe_queue = []
end
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Class Method Details
.fire_event(event_obj) ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 22
def fire_event(event_obj)
self.instance.fire_event(event_obj)
end
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.instance ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 6
def instance
if @instance.nil?
@instance = self.new
end
@instance
end
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.reset ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 26
def reset
@instance = nil
end
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.subscribe(event_class, *args, &blk) ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 13
def subscribe(event_class, *args, &blk)
self.instance.subscribe(event_class, *args, &blk)
end
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.unsubscribe(event_class) ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 17
def unsubscribe(event_class)
self.instance.unsubscribe(event_class)
end
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Instance Method Details
#fire_event(event_obj) ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 89
def fire_event(event_obj)
raise ArgumentError unless event_obj.is_a?(Event::Base)
log_msg = ""
log_msg = " #{event_obj.log_message}" unless event_obj.log_message.nil?
Wakame.log.debug("Event #{event_obj.class} has been fired:" + log_msg )
tlist = @event_handlers[event_obj.class]
return if tlist.nil?
run_callbacks = proc {
@unsubscribe_queue.each { |t|
@tickets.delete(t)
tlist.delete(t)
}
tlist.each { |t|
ary = @tickets[t]
c = ary[1]
if c.nil?
next
end
begin
c.call(event_obj)
rescue => e
Wakame.log.error(e)
end
}
@unsubscribe_queue.each { |t|
@tickets.delete(t)
tlist.delete(t)
}
}
::EventMachine.barrier {
begin
run_callbacks.call
rescue => e
Wakame.log.error(e)
end
}
end
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#reset(event_class = nil) ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 136
def reset(event_class=nil)
if event_class.nil?
@event_handlers.clear
@tickets.clear
else
unless @event_handlers[event_class.to_s].nil?
@event_handlers[event_class.to_s].each_key { |k|
@tickets.delete(k)
}
@event_handlers[event_class.to_s].clear
end
end
end
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#subscribe(event_class, *args, &blk) ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 41
def subscribe(event_class, *args, &blk)
event_class = case event_class
when Class
event_class
when String
Util.str2const(event_class)
else
raise ArgumentError, "event_class has to be a form of String or Class type"
end
EM.barrier {
tlist = @event_handlers[event_class]
if tlist.nil?
tlist = @event_handlers[event_class] = []
end
tickets = []
args.each { |o|
tickets << Util.gen_id
@tickets.store(tickets.last, [event_class, o])
tlist << tickets.last
}
if blk
tickets << Util.gen_id
@tickets.store(tickets.last, [event_class, blk])
tlist << tickets.last
end
tickets.size > 1 ? tickets : tickets.first
}
end
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#unsubscribe(ticket) ⇒ Object
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# File 'lib/wakame/event_dispatcher.rb', line 75
def unsubscribe(ticket)
unless @tickets.has_key?(ticket)
return nil
end
EM.barrier {
Wakame.log.debug("#{self.class}.unsubscribe(#{ticket})")
@unsubscribe_queue << ticket
ticket
}
end
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