Class: PathObserver::ObserveManager

Inherits:
Object
  • Object
show all
Includes:
Observable
Defined in:
lib/path_observer/observe_manager.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(glob_expr = nil, interval = 1, &event_action) ⇒ ObserveManager

Returns a new instance of ObserveManager.



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# File 'lib/path_observer/observe_manager.rb', line 7

def initialize glob_expr=nil, interval=1, &event_action
  @interval = interval

  if glob_expr
    add_paths glob_expr, &event_action
  end
end

Instance Attribute Details

#interval ⇒ Object

Returns the value of attribute interval.



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# File 'lib/path_observer/observe_manager.rb', line 15

def interval
  @interval
end

Instance Method Details

#add_path(path, &event_action) ⇒ Object 



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# File 'lib/path_observer/observe_manager.rb', line 17

def add_path path, &event_action
  add_observer(PathObserver::Observer.new(path, &event_action))
end

#add_paths(glob_expr, &event_action) ⇒ Object 



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# File 'lib/path_observer/observe_manager.rb', line 21

def add_paths glob_expr, &event_action
  Pathname.glob(glob_expr).each do |path|
    add_path path, &event_action
  end
end

#observe(method) ⇒ Object 



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# File 'lib/path_observer/observe_manager.rb', line 27

def observe method
  last_result_of = {}
  @observer_peers.each do |observer|
    last_result_of[observer.path.to_s] = observer.path.__send__(method)
  end

  loop do
    begin
      sleep @interval

      current_result_of = {}
      @observer_peers.each do |observer|
        current_result_of[observer.path.to_s] = observer.path.__send__(method)
      end

      temp_touple = current_result_of.select {|key, val| val != last_result_of[key] }
      if temp_touple.size > 0
        temp_touple.each do |hash|
          changed
          notify_observers hash.first, hash.last 
        end
        last_result_of = current_result_of
      end
    rescue Interrupt
      return
    rescue Exception
      next
    end
  end
end