Class: Guard::Process

Inherits:
Plugin
  • Object
show all
Defined in:
lib/guard/process.rb

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Process

Returns a new instance of Process.



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# File 'lib/guard/process.rb', line 6

def initialize(options = {})
  @pid = nil
  @command = options.fetch(:command)
  @command = @command.split(" ") if @command.is_a?(String)
  @env = options[:env] || {}
  @name = options[:name]
  @dir = options[:dir] || Dir.getwd
  @stop_signal = options[:stop_signal] || "TERM"
  @dont_stop = options[:dont_stop]
  super
end

Instance Method Details

#process_running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/guard/process.rb', line 22

def process_running?
  begin
    @pid ? ::Process.kill(0, @pid) : false
  rescue Errno::ESRCH => e
    false
  end
end

#reload ⇒ Object 



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# File 'lib/guard/process.rb', line 67

def reload
  if wait_for_stop?
    wait_for_stop
  else
    stop
  end
  start
end

#run_all ⇒ Object 



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# File 'lib/guard/process.rb', line 76

def run_all
  true
end

#run_on_change(paths) ⇒ Object 



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# File 'lib/guard/process.rb', line 80

def run_on_change(paths)
  reload
end

#start ⇒ Object 



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# File 'lib/guard/process.rb', line 30

def start
  UI.info("Starting process #{@name}")
  original_env = {}
  @env.each_pair do |key, value|
    original_env[key] = ENV[key]
    ENV[key] = value
  end
  Dir.chdir(@dir) do
    @pid = Spoon.spawnp(*@command)
  end
  original_env.each_pair do |key, value|
    ENV[key] = value
  end
  UI.info("Started process #{@name}")
end

#stop ⇒ Object 



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# File 'lib/guard/process.rb', line 46

def stop
  if @pid
    UI.info("Stopping process #{@name}")
    begin
      ::Process.kill(@stop_signal, @pid)
      ::Process.waitpid(@pid)
    rescue Errno::ESRCH
    end
    @pid = nil
    UI.info("Stopped process #{@name}")
  end
end

#wait_for_stop ⇒ Object 



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# File 'lib/guard/process.rb', line 59

def wait_for_stop
  if @pid
    UI.info("Process #{@name} is still running...")
    ::Process.waitpid(@pid) rescue Errno::ESRCH
    UI.info("Process #{@name} has stopped!")
  end
end

#wait_for_stop? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/guard/process.rb', line 18

def wait_for_stop?
  @dont_stop
end