Class: Fairy::PBasicMGroupBy

Inherits:
PIOFilter show all
Defined in:
lib/fairy/node/p-basic-group-by.rb

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

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, block_source) ⇒ PBasicMGroupBy

Returns a new instance of PBasicMGroupBy.



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# File 'lib/fairy/node/p-basic-group-by.rb', line 116

def initialize(id, ntask, bjob, opts, block_source)
  super
  @block_source = block_source
#      @key_proc = eval("proc{#{@block_source}}", TOPLEVEL_BINDING)
#      @key_proc = @context.create_proc(@block_source)
  @key_proc = BBlock.new(@block_source, @context, self)

  @exports = {}
  @exports_queue = Queue.new

#      start_watch_exports
end

Instance Method Details

#add_export(key, export) ⇒ Object 



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# File 'lib/fairy/node/p-basic-group-by.rb', line 129

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

#start_export ⇒ Object 



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# File 'lib/fairy/node/p-basic-group-by.rb', line 136

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{#{@block_source.source}}", @context.binding)
	else
	  @key_proc = BBlock.new(@block_source, @context, self)
	end

	policy = @opts[:postqueuing_policy]
    begin
      @input.each do |e|
        keys = @key_proc.yield(e)
        keys = [keys] unless keys.kind_of?(Array)
        
        for key in keys 
   if Import::CTLTOKEN_NULLVALUE === key
		next
   end
          export = @exports[key]
          unless export
            export = Export.new(policy)
		export.njob_id = @id
            export.add_key(key)
            add_export(key, export)
          end
          export.push e
        end
      end
    rescue
	  Log::debug_exception(self)
	  raise
    ensure
      @exports_queue.push nil
      @exports.each_pair do |key, export| 
 next unless export
 export.push END_OF_STREAM
	  end
    end
  end
end

#terminate ⇒ Object 



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# File 'lib/fairy/node/p-basic-group-by.rb', line 182

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

#wait_export_finish ⇒ Object

for key in keys export = @exports unless export export = Export.new(policy) export.add_key(key) add_export(key, export) end export.push e end end @exports.each{|key, export| export.push END_OF_STREAM} wait_export_finish

  end
end



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# File 'lib/fairy/node/p-basic-group-by.rb', line 211

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
#	export.output
#      end

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