Class: Praetor::Service

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

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Class Attribute Details

._controllers ⇒ Object (readonly)

Returns the value of attribute _controllers.



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# File 'lib/praetor/service.rb', line 8

def _controllers
  @_controllers
end

Instance Attribute Details

#redis ⇒ Object

Returns the value of attribute redis.



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# File 'lib/praetor/service.rb', line 20

def redis
  @redis
end

Class Method Details

.controller(klass) ⇒ Object 



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

def controller(klass)
  klass.include ServiceController
  (@_controllers ||= []) << klass
end

.endpoint ⇒ Object 



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# File 'lib/praetor/service.rb', line 15

def endpoint
  @endpoint ||= name.underscore
end

Instance Method Details

#dispatch!(request) ⇒ Object 



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# File 'lib/praetor/service.rb', line 36

def dispatch!(request)
  controller = request['controller']
  action     = request['action']
  params     = request['params'] || {}

  check_controller! controller

  klass = controller.constantize
  check_action! klass, action

  instance = klass.new
  instance.instance_variable_set :@params, params
  instance.send action
end

#run ⇒ Object 



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# File 'lib/praetor/service.rb', line 22

def run
  client_options = ENV['REDIS_PROVIDER'] ? { url: ENV['REDIS_PROVIDER'] } : {}
  @redis = Redis.new client_options

  loop do
    # Pop off the next request (or block until one arrives)
    _, request = @redis.brpop self.class.endpoint

    # You can shut down a service by issuing a stop command; useful for testing
    break if request == 'stop'
    handle_request JSON.parse(request)
  end
end