Class: Fairy::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/fairy/node.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Node

Returns a new instance of Node.



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# File 'lib/fairy/node.rb', line 24

def initialize
  @id = nil
  @addr = nil
  @logger = nil

  @processor_seq = -1
  @processor_seq_mutex = Mutex.new

  @processors = []
  @processors_mutex = Mutex.new
  @processors_cv = XThread::ConditionVariable.new

  @active_processors = {}
  @active_processors_mutex = Mutex.new
  @active_processors_cv = XThread::ConditionVariable.new
end

Instance Attribute Details

#addr ⇒ Object

Returns the value of attribute addr.



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# File 'lib/fairy/node.rb', line 42

def addr
  @addr
end

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/fairy/node.rb', line 41

def id
  @id
end

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/fairy/node.rb', line 43

def logger
  @logger
end

#processors ⇒ Object (readonly)

Returns the value of attribute processors.



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# File 'lib/fairy/node.rb', line 45

def processors
  @processors
end

Class Method Details

.start(master_host, master_port) ⇒ Object 



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# File 'lib/fairy/node.rb', line 193

def Node.start(master_host, master_port)
  node = Node.new
  node.start(master_host, master_port)
end

Instance Method Details

#create_processor ⇒ Object 



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# File 'lib/fairy/node.rb', line 90

def create_processor
  proc = nil
  @processors_mutex.synchronize do
  processor_id = processor_next_id
# Process.spawn("test/testn.rb", 
#         "--controller", @deepconnect.local_id, 
#         "--id", processor_id.to_s)
#   pid = Process.fork{
#     Process.fork{
#       exec(CONF.RUBY_BIN, CONF.PROCESSOR_BIN,
#      "--node", @deepconnect.local_id.to_s, 
#      "--id", processor_id.to_s)
#     }
#   }
#   Process.wait pid

  pid = NodeAPP.start_subcommand2(CONF.RUBY_BIN, 
  CONF.PROCESSOR_BIN,
  "--node", @deepconnect.local_id.to_s, 
  "--id", processor_id.to_s)
  Process.wait pid
  
  begin
    timeout(CONF.SUBCMD_EXEC_TIMEOUT) do
 while !@processors[processor_id]
   @processors_cv.wait(@processors_mutex)
 end
    end
  rescue Timeout::Error
    Log::fatal(self, "Can't exec Processor")
    ERR::Fail ERR::CantExecSubcmd, "processor"
  end

  @master.set_no_of_processors(self, @processors.size)
  @processors[processor_id]
  end
end

#deregister_processor(processor) ⇒ Object 



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# File 'lib/fairy/node.rb', line 152

def deregister_processor(processor)
#      @processors.synchronize do

  update_processor_status(processor, :ST_WAIT)

  @processors_mutex.synchronize do
  # ↓パフォーマンス悪い!!
  @processors.delete(processor.id)
  @master.set_no_of_processors(self, @processors.size)

  @processors_cv.broadcast
  end
end

#log_id ⇒ Object 



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# File 'lib/fairy/node.rb', line 47

def log_id
  "Node[#{@id}]"
end

#processor_next_id ⇒ Object 



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# File 'lib/fairy/node.rb', line 84

def processor_next_id
  @processor_seq_mutex.synchronize do
  @processor_seq += 1
  end
end

#register_processor(processor) ⇒ Object 



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# File 'lib/fairy/node.rb', line 141

def register_processor(processor)
#      @processors.synchronize do
  @processors_mutex.synchronize do
  # ↓パフォーマンス悪い!!
  @processors[processor.id] = processor
  processor.addr = @addr

  @processors_cv.broadcast
 end
end

#start(master_host, master_port, service = 0) ⇒ Object

def processors_dup

@processors.synchronize do

@processors.dup

  end
end



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# File 'lib/fairy/node.rb', line 57

def start(master_host, master_port, service=0)
  @deepconnect = DeepConnect.start(service)
  @deepconnect.export("Node", self)

  require "fairy/share/inspector"
  @deepconnect.export("Inspector", Inspector.new(self))

  require "fairy/share/log"
  @master_deepspace = @deepconnect.open_deepspace(master_host, master_port)
  @master = @master_deepspace.import("Master")
  @logger = @master.logger
  Log.type = "[N]"
  Log.logger = @logger
  Log.info(self, "Node Service Start")
  Log::info(self, "\tfairy version: #{Version}")
  Log::info(self, "\t[Powered BY #{RUBY_DESCRIPTION}]") 

  begin
  require "fairy.so"
  Log::warn self, "\t Load fairy.so"
  rescue LoadError
  Log::warn self, "Can't load fairy.so. Can't use this feature"
  end

  @master.register_node(self)
end

#terminate_processor(processor) ⇒ Object 



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# File 'lib/fairy/node.rb', line 128

def terminate_processor(processor)
  deregister_processor(processor)
  begin
  Log::info(self, "terminate processor.")
  processor.terminate
  rescue
  Log::debug(self, "Exception Rised in termination processor.")
  Log::debug_exception(self)
  end
# forkの仕組みが変わった.
#      Process.wait
end

#to_s ⇒ Object 



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# File 'lib/fairy/node.rb', line 189

def to_s
  "#<#{self.class}: #{id}>"
end

#update_processor_status(processor, st) ⇒ Object

process status management



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# File 'lib/fairy/node.rb', line 169

def update_processor_status(processor, st)
Log::debug(self, "UPDATE_PROCESSOR_STATUS S: #{processor} #{st}")
  @active_processors_mutex.synchronize do
  case st
  when :ST_WAIT, :ST_SEMIACTIVATE, :ST_FINISH
Log::debug(self, "UPDATE_PROCESSOR_STATUS: 2")
    if @active_processors.key?(processor)
Log::debug(self, "UPDATE_PROCESSOR_STATUS: 3")
 @active_processors.delete(processor)
 @master.set_no_of_active_processors(self, @active_processors.size)
    end
  when :ST_ACTIVATE
Log::debug(self, "UPDATE_PROCESSOR_STATUS: 4")
    @active_processors[processor] = processor
    @master.set_no_of_active_processors(self, @active_processors.size)
  end
  end
Log::debug(self, "UPDATE_PROCESSOR_STATUS: E")
end