Class: Freyr::ServiceGroup

Inherits:
Array
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/freyr/service_group.rb

Instance Method Summary collapse

Instance Method Details

#find_by_name(n) ⇒ Object 



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# File 'lib/freyr/service_group.rb', line 9

def find_by_name(n)
  find {|s| s.name == n}
end

#restart ⇒ Object 



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# File 'lib/freyr/service_group.rb', line 59

def restart
  names = collect {|s| s.name}
  
  each do |s|
    Freyr.logger.debug('restart service') {s.name}
    s.restart!
    names.delete(s.name)
  end
  
  names
end

#run ⇒ Object

Take care this can make a stack overflow



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# File 'lib/freyr/service_group.rb', line 14

def run
  return [] if empty?
  
  needs_to_run = ServiceGroup.new
  
  kill = false
  names = []
  
  each do |svc|
    
    unless svc.dependencies.empty?
      if n = svc.dependencies.find {|s| !Service.alive?(s)}
        if find_by_name(n)
          needs_to_run << svc
        elsif s = Service[n].first
          needs_to_run << s
          needs_to_run << svc
        else
          puts "Can't run #{svc.name} because dependency #{n} cannot be found"
          kill = true
        end
        
        next
      end
    end
    
    Freyr.logger.debug('starting service') {svc.name}
    pid = svc.start!
    names << svc.name if pid
  end
  
  names += needs_to_run.run unless kill
  names
end

#stop ⇒ Object 



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# File 'lib/freyr/service_group.rb', line 49

def stop
  changed_names = collect {|s| s.name if s.alive?}.compact
  each do |svc|
    Freyr.logger.debug('stopping service') {svc.name}
    svc.stop!
  end
  
  changed_names
end