Class: Slnky::Service::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/slnky/service.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Base

Returns a new instance of Base.



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# File 'lib/slnky/service.rb', line 14

def initialize
  config.service = name
  @server_down = false
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/slnky/service.rb', line 12

def name
  @name
end

#subscriber ⇒ Object (readonly)

Returns the value of attribute subscriber.



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# File 'lib/slnky/service.rb', line 10

def subscriber
  @subscriber
end

#timers ⇒ Object (readonly)

Returns the value of attribute timers.



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# File 'lib/slnky/service.rb', line 11

def timers
  @timers
end

Class Method Details

.periodic(seconds, method) ⇒ Object Also known as: timer 



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# File 'lib/slnky/service.rb', line 104

def periodic(seconds, method)
  Slnky::Service.timers.add(seconds, method)
end

.subscribe(name, method) ⇒ Object 



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# File 'lib/slnky/service.rb', line 100

def subscribe(name, method)
  Slnky::Service.subscriber.add(name, method)
end

Instance Method Details

#handle_command(event, data) ⇒ Object 



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# File 'lib/slnky/service.rb', line 35

def handle_command(event, data)
  if command
    command.handle(event, data)
  else
    log.error "no comamnd support for #{name}"
  end
end

#handle_heartbeat ⇒ Object 



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# File 'lib/slnky/service.rb', line 49

def handle_heartbeat
  return if @server_down
  Slnky.heartbeat(name)
rescue => e
  log.info "could not post heartbeat, server down? #{e.message}"
  @server_down = true
end

#handle_restart(name, data) ⇒ Object 



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# File 'lib/slnky/service.rb', line 43

def handle_restart(name, data)
  # if we get this event, just stop. upstart will start us again.
  log.warn "received restart event"
  transport.stop!('Restarted')
end

#start ⇒ Object 



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# File 'lib/slnky/service.rb', line 19

def start
  transport.start!(self) do |_|
    log.info "#{config.service} running #{config.environment}"
    run

    subscriber.add "slnky.#{name}.command", :handle_command
    subscriber.add "slnky.help.command", :handle_command
    subscriber.add "slnky.service.restart", :handle_restart
    timers.add 5.seconds, :handle_heartbeat unless config.development?

    subscriber.each do |name, method|
      log.info "subscribed to: #{name} -> #{self.class.name}.#{method}"
    end
  end
end