Class: LS4::SlaveService::Replicator

Inherits:
Object
  • Object
show all
Defined in:
lib/ls4/service/slave.rb

Instance Method Summary collapse

Constructor Details

#initialize(storage, nid, rts) ⇒ Replicator

Returns a new instance of Replicator.



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# File 'lib/ls4/service/slave.rb', line 30

def initialize(storage, nid, rts)
  @storage = storage
  @nid = nid
  @rts = rts
  @pulling = false
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/ls4/service/slave.rb', line 37

def close
  @rts.close
end

#try_replicate(session, limit) ⇒ Object 



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# File 'lib/ls4/service/slave.rb', line 41

def try_replicate(session, limit)
  if @pulling
    return nil
  end
  @pulling = true

  begin
    pos = @rts.get
    session.callback(:replicate_pull, pos, limit) do |future|
      ack_replicate_pull(future)
    end

  rescue
    $log.error "try replicate #{$!}"
    $log.debug_backtrace $!.backtrace
    @pulling = false
    raise
  end
end