Module: MiGA::Common::WithDaemonClass

Included in:
Daemon, Lair
Defined in:
lib/miga/common/with_daemon_class.rb

Overview

Helper module with specific class-level functions to be used with include MiGA::Common::WithDaemon.

Instance Method Summary collapse

Instance Method Details

#alive_file(path) ⇒ Object

Path to the alive file



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# File 'lib/miga/common/with_daemon_class.rb', line 13

def alive_file(path)
  File.join(daemon_home(path), '.daemon-alive')
end

#daemon_home(path) ⇒ Object

Path to the daemon home from the parent’s path



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# File 'lib/miga/common/with_daemon_class.rb', line 7

def daemon_home(path)
  path
end

#last_alive(path) ⇒ Object

When was a daemon last seen at path?



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# File 'lib/miga/common/with_daemon_class.rb', line 25

def last_alive(path)
  f = alive_file(path)
  f = terminated_file(path) unless File.exist? f
  c = File.read(f)
  return nil if c.nil? || c.empty?

  Time.parse(c)
rescue Errno::ENOENT, ArgumentError
  return nil
end

#terminated_file(path) ⇒ Object

Path to the terminated file



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# File 'lib/miga/common/with_daemon_class.rb', line 19

def terminated_file(path)
  File.join(daemon_home(path), '.daemon-terminated')
end