Class: Pwrake::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/pwrake/iomux/runner.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(timeout = nil) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/pwrake/iomux/runner.rb', line 7

def initialize(timeout=nil)
  @timeout = timeout
  @handler = {}
  @hb_time = {}
end

Instance Attribute Details

#handler ⇒ Object (readonly)

Returns the value of attribute handler.



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# File 'lib/pwrake/iomux/runner.rb', line 13

def handler
  @handler
end

Instance Method Details

#add_handler(hdl) ⇒ Object 



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# File 'lib/pwrake/iomux/runner.rb', line 15

def add_handler(hdl)
  @handler[hdl.ior] ||= hdl
end

#delete_handler(hdl) ⇒ Object 



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# File 'lib/pwrake/iomux/runner.rb', line 19

def delete_handler(hdl)
  @handler.delete(hdl.ior)
end

#finish ⇒ Object 



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# File 'lib/pwrake/iomux/runner.rb', line 42

def finish
  @handler.each do |io,hdl|
    hdl.finish
  end
end

#get_host(io) ⇒ Object

used to print an error message



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# File 'lib/pwrake/iomux/runner.rb', line 49

def get_host(io)
  hdl = @handler[io]
  h = hdl.respond_to?(:host) ? hdl.host : nil
end

#heartbeat(io) ⇒ Object

called when IO start and receive heartbeat



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# File 'lib/pwrake/iomux/runner.rb', line 55

def heartbeat(io)
  @hb_time[io] = Time.now
  @hb_earliest = @hb_time.values.min
  #Log.debug "heartbeat: host=#{get_host(io)}"
end

#run ⇒ Object 



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# File 'lib/pwrake/iomux/runner.rb', line 23

def run
  while !(io_set = @handler.keys).empty?
    sel, = IO.select(io_set,nil,nil,@timeout)
    if sel.nil?
      raise TimeoutError,"Timeout (#{@timeout} s) in IO.select"
    end
    sel.each do |io|
      @handler[io].process_line
    end
    if @timeout && @hb_earliest
      if Time.now - @hb_earliest > @timeout
        io = @hb_time.key(@hb_earliest)
        raise TimeoutError,"Timeout (#{@timeout}s) "+
          "in Heartbeat from host=#{get_host(io)}"
      end
    end
  end
end