Class: Fairy::PWC

Inherits:
PIOFilter show all
Defined in:
lib/fairy/node/p-wc.rb

Defined Under Namespace

Classes: PPostFilter

Constant Summary collapse

ST_ALL_IMPORTED = 
:ST_ALL_IMPORTED
ST_WAIT_EXPORT_FINISH = 
:ST_WAIT_EXPORT_FINISH
ST_EXPORT_FINISH = 
:ST_EXPORT_FINISH

Constants inherited from PIOFilter

Fairy::PIOFilter::ST_WAIT_IMPORT

Constants inherited from PFilter

Fairy::PFilter::END_OF_STREAM, Fairy::PFilter::ST_ACTIVATE, Fairy::PFilter::ST_FINISH, Fairy::PFilter::ST_INIT

Instance Attribute Summary

Attributes inherited from PFilter

#IGNORE_EXCEPTION, #id, #log_id, #ntask

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from PIOFilter

#input=

Methods inherited from PFilter

#abort_running, #basic_start, #break_running, #each, #global_break, #global_break_from_other, #handle_exception, #key, #key=, #next, #no, #no=, #notice_status, #processor, #start, #start_watch_status, #status=, #terminate_proc

Constructor Details

#initialize(id, ntask, bjob, opts = nil) ⇒ PWC

Returns a new instance of PWC.



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# File 'lib/fairy/node/p-wc.rb', line 23

def initialize(id, ntask, bjob, opts=nil)
  super
  @file = nil

  @exports = {}
  @exports_queue = Queue.new
  
  @counter = {}

  @mod = opts[:no_segment] 
  @mod ||= CONF.GROUP_BY_NO_SEGMENT

  mod = opts[:hash_module]
  mod ||= CONF.GROUP_BY_HASH_MODULE
  require mod
  @hash_generator = Fairy::HValueGenerator.new(bjob.hash_seed)

  @hash_optimize = CONF.GROUP_BY_GROUPING_OPTIMIZE
  @hash_optimize = opts[:grouping_optimize] if opts.key?(:grouping_optimize)
end

Class Method Details

.open(processor, bjob, opts, fn) ⇒ Object 



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# File 'lib/fairy/node/p-wc.rb', line 18

def PWC.open(processor, bjob, opts, fn)
  nfile = PWC.new(processor, bjob, opts)
  nfile.open(fn)
end

Instance Method Details

#add_export(key, export) ⇒ Object 



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# File 'lib/fairy/node/p-wc.rb', line 62

def add_export(key, export)
  @exports[key] = export
#      @exports_queue.push [key, export]
  # [BUG#171]同期処理でないとまずい.
  @bjob.add_exports(key, export, self)
end

#hash_key(e) ⇒ Object 



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# File 'lib/fairy/node/p-wc.rb', line 121

def hash_key(e)
  @hash_generator.value(@key_proc.yield(e)) % @mod
end

#open(nfileplace) ⇒ Object 



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# File 'lib/fairy/node/p-wc.rb', line 44

def open(nfileplace)
  @file_name = nfileplace.path
  self.no = nfileplace.no
  begin
	@file = File.open(@file_name)
  rescue 
	e = $!.exception($!.message+ "(vfile entry##{nfileplace.no}: #{nfileplace.url})")
	e.set_backtrace($!.backtrace)

	Log::error_exception(e)
	handle_exception(e)
	raise e
  end
#      start
  self
end

#start_export ⇒ Object 



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# File 'lib/fairy/node/p-wc.rb', line 69

def start_export
  Log::debug(self, "START_EXPORT")

  start do
	hash_opt = @opts[:grouping_optimize]
	hash_opt = CONF.GROUP_BY_GROUPING_OPTIMIZE if hash_opt.nil?
	
#	if hash_opt
	  @key_proc = eval("proc{|w| w}", @context.binding)
#	else
#	  @key_proc = BBlock.new("|w| w", @context, self)
#	end
	
	policy = @opts[:postqueuing_policy]
	begin
	  @file.each do |ln|
 (begin
   ln.chomp.split
 rescue
   []
 end).each do |e|
   key = hash_key(e)
   export = @exports[key]
   unless export
		export = Export.new(policy)
		export.njob_id = @id
		export.add_key(key)
		add_export(key, export)
		@counter[key] = 0
   end
   export.push e
   @counter[key] += 1
 end
	  end
	rescue
	  Log::debug_exception(self)
	  raise
	ensure
	  @exports_queue.push nil
	  @exports.each{|key, export| 
 Log::debug(self, "G0 #{key} => #{@counter[key]}")	    
 export.push END_OF_STREAM}
	end
  end
end

#terminate ⇒ Object 



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# File 'lib/fairy/node/p-wc.rb', line 115

def terminate
  @wait_cv = @terminate_mon.new_cv
  wait_export_finish
  super
end

#wait_export_finish ⇒ Object 



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# File 'lib/fairy/node/p-wc.rb', line 126

def wait_export_finish

Log::debug(self, "G1")

  self.status = ST_ALL_IMPORTED

Log::debug(self, "G2")
  # すべての, exportのoutputが設定されるまで待っている
  # かなりイマイチ
#      for key, export in @exports
#Log::debug(self, "G2.key = #{export.key}: WAIT")
#	export.output
#Log::debug(self, "G2.key = #{export.key}: RESUME")
#      end

Log::debug(self, "G3")
  # ここの位置が重要
  self.status = ST_WAIT_EXPORT_FINISH
  # ここもいまいち
Log::debug(self, "G4")
  for key,  export in @exports
Log::debug(self, "G4.WAIT #{key}")
	export.fib_wait_finish(@wait_cv)
  end
Log::debug(self, "G5")
  self.status = ST_EXPORT_FINISH
end