Class: Spring::ApplicationManager

Inherits:
Object
  • Object
show all
Includes:
Mutex_m
Defined in:
lib/spring/application_manager.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(env) ⇒ ApplicationManager

Returns a new instance of ApplicationManager.



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# File 'lib/spring/application_manager.rb', line 11

def initialize(env)
  super()
  @env = env
end

Instance Attribute Details

#child ⇒ Object (readonly)

Returns the value of attribute child.



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# File 'lib/spring/application_manager.rb', line 9

def child
  @child
end

#env ⇒ Object (readonly)

Returns the value of attribute env.



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# File 'lib/spring/application_manager.rb', line 9

def env
  @env
end

#pid ⇒ Object (readonly)

Returns the value of attribute pid.



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# File 'lib/spring/application_manager.rb', line 9

def pid
  @pid
end

Instance Method Details

#alive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spring/application_manager.rb', line 28

def alive?
  @pid
end

#restart ⇒ Object 



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# File 'lib/spring/application_manager.rb', line 21

def restart
  # Restarting is a background operation. If it fails, we don't want
  # any terminal output. The user will see the output when they next
  # try to run a command.
  start_child(true)
end

#run(client) ⇒ Object

Returns the pid of the process running the command, or nil if the application process died.



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# File 'lib/spring/application_manager.rb', line 33

def run(client)
  @client = client

  synchronize do
    if alive?
      begin
        child.send_io @client
      rescue Errno::EPIPE
        # EPIPE indicates child has died but has not been collected by the wait thread yet
        start
        child.send_io @client
      end
    else
      start
      child.send_io @client
    end
  end

  child.gets.chomp.to_i # get the pid
rescue Errno::ECONNRESET, Errno::EPIPE
  nil
ensure
  @client.close
  @client = nil
end

#start ⇒ Object 



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# File 'lib/spring/application_manager.rb', line 16

def start
  start_child
  start_wait_thread
end