Class: Kinetic::Master

Inherits:
Object
  • Object
show all
Defined in:
lib/kinetic/master.rb

Constant Summary collapse

SELF_PIPE = 
[]
QUEUE_SIGS = 
[ :WINCH, :QUIT, :INT, :TERM, :USR1, :USR2, :HUP, :TTIN, :TTOU ]
WORKERS = 
{}
SIG_QUEUE = 
[]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Master

Returns a new instance of Master.



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# File 'lib/kinetic/master.rb', line 15

def initialize(app)
  @app = app
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/kinetic/master.rb', line 13

def app
  @app
end

Instance Method Details

#after_fork(&block) ⇒ Proc

Sets or gets the after fork block. This is called immediately after a worker is forked.

Returns:

  • (Proc) —

    the after_fork block



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# File 'lib/kinetic/master.rb', line 52

def after_fork(&block)
  @after_fork = block if block_given?
  @after_fork || proc {}
end

#before_fork(&block) ⇒ Proc

Sets or gets the before fork block. This is called just before a worker is forked.

Returns:

  • (Proc) —

    the before_block



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# File 'lib/kinetic/master.rb', line 44

def before_fork(&block)
  @before_fork = block if block_given?
  @before_fork || proc {}
end

#run ⇒ Kinetic::Master

Starts and initializes the master process.

Returns:



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# File 'lib/kinetic/master.rb', line 22

def run
  begin
    logger.info "Starting Kinetic #{Kinetic::VERSION} with PID #{Process.pid}"
    logger.debug 'Configuration:'
    logger.ap    app.class.send(:config).to_hash
    write_pidfile!
    initialize_self_pipe!
    initialize_signal_traps!
    spawn_missing_workers
    join
  rescue => e
    logger.fatal e
    logger.fatal 'Unable to start worker!'
  ensure
    call_on_exit_callbacks
    exit!
  end
end