Class: Sabbath::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/sabbath/server.rb

Defined Under Namespace

Classes: DeferrableBody, MethodOverride, StatsProvider

Constant Summary collapse

AsyncResponse = 
[-1, {}, []].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(backend, web_host, web_port, rackup, cookie_name = 'sabbath_id') ⇒ Server

Returns a new instance of Server.



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# File 'lib/sabbath/server.rb', line 90

def initialize(backend, web_host, web_port, rackup, cookie_name = 'sabbath_id')
  @backend = backend
  @web_host, @web_port, @cookie_name, @rackup = web_host, web_port, cookie_name, rackup
  @router = Usher.new(:request_methods => [:request_method], :delimiters => ['/', '.'])
  @router.add_route('/:tube',                   :conditions => {:request_method => 'GET'})      .name(:get_latest_job)
  @router.add_route('/:tube/:job_id',           :conditions => {:request_method => 'GET'})      .name(:get_job)
  @router.add_route('/:tube',                   :conditions => {:request_method => 'POST'})     .name(:create_job)
  @router.add_route('/:tube/:job_id',           :conditions => {:request_method => 'DELETE'})   .name(:delete_job)
  @router.add_route('/:tube/:job_id/release',   :conditions => {:request_method => 'PUT'})      .name(:release_job)
end

Instance Attribute Details

#backend ⇒ Object (readonly)

Returns the value of attribute backend.



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# File 'lib/sabbath/server.rb', line 88

def backend
  @backend
end

#cookie_name ⇒ Object (readonly)

Returns the value of attribute cookie_name.



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# File 'lib/sabbath/server.rb', line 88

def cookie_name
  @cookie_name
end

#rackup ⇒ Object (readonly)

Returns the value of attribute rackup.



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# File 'lib/sabbath/server.rb', line 88

def rackup
  @rackup
end

#web_host ⇒ Object (readonly)

Returns the value of attribute web_host.



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# File 'lib/sabbath/server.rb', line 88

def web_host
  @web_host
end

#web_port ⇒ Object (readonly)

Returns the value of attribute web_port.



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# File 'lib/sabbath/server.rb', line 88

def web_port
  @web_port
end

Instance Method Details

#builder ⇒ Object 



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# File 'lib/sabbath/server.rb', line 101

def builder
  builder = Rack::Builder.new
  builder.use(StatsProvider, backend.name, backend.host, backend.port)
  builder.instance_eval(File.read(rackup)) if rackup
  builder.use(MethodOverride)
  builder.run(self)
  builder
end

#call(env) ⇒ Object 



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# File 'lib/sabbath/server.rb', line 110

def call(env)
  p env
  request = Rack::Request.new(env)
  query_params = Rack::Utils.parse_query(request.query_string)
  
  id = request.cookies[cookie_name] || UUID.new.generate
  common_response_headers = {'Content-Type' => 'text/javascript'}
  
  common_response_headers['Set-cookie'] = Rack::Utils.build_query(cookie_name => id) unless request.cookies[cookie_name]
  
  body = DeferrableBody.new
  # Get the headers out there asap, let the client know we're alive...
  EventMachine::next_tick {
    body.jsonp_callback = query_params['callback']
    case response = @router.recognize(request)
    when nil
      env['async.callback'].call([404, {}, []])
    else
      params = Hash[response.params]
      p response.path.route.named
      p params
      case response.path.route.named
      when :get_latest_job
        env['async.callback'].call([200, common_response_headers, body])
        backend.get_latest_job(id, params[:tube], params['timeout']) {|job|
          body.succeed_with(:id => job.id, :body => job.body)
        }.on_error {|message|
          body.succeed_with(:error => message)
        }
      when :get_job
        env['async.callback'].call([200, common_response_headers, body])
        backend.get_job(id, params[:tube], params[:job_id]) {|job|
          body.succeed_with(:id => job.id, :body => job.body)
        }.on_error {|message|
          body.succeed_with(:error => message)
        }
      when :create_job
        env['async.callback'].call([200, common_response_headers, body])
        backend.create_job(id, params[:tube], query_params['body']) {|id|
          body.succeed_with(:id => id)
        }.on_error {|message|
          body.succeed_with(:error => message)
        }
      when :delete_job
        env['async.callback'].call([200, common_response_headers, body])
        backend.delete_job(id, params[:tube], params[:job_id]) {
          body.succeed_with(:success => true)
        }.on_error {|message|
          body.succeed_with(:error => message)
        }
      when :release_job
        env['async.callback'].call([200, common_response_headers, body])
        backend.release_job(id, params[:tube], params[:job_id]) {
          body.succeed_with(:success => true)
        }.on_error {|message|
          body.succeed_with(:error => message)
        }
      end
    end
  }
  AsyncResponse
end

#start ⇒ Object 



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# File 'lib/sabbath/server.rb', line 173

def start
  EM.run do
    Thin::Server.start(web_host, web_port, builder.to_app)
  end      
end