Class: Chassis::Rack::Ping

Inherits:
Object
  • Object
show all
Defined in:
lib/chassis/rack/health_check.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, &block) ⇒ Ping

Returns a new instance of Ping.



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# File 'lib/chassis/rack/health_check.rb', line 6

def initialize(app, &block)
  @app, @block = app, block
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/chassis/rack/health_check.rb', line 10

def call(env)
  if '/ping' == env.fetch('PATH_INFO')
    if @block
      begin
        result = @block.call(::Rack::Request.new(env))
        raise "health check did not return correctly" unless result
      rescue => boom
        raise HealthCheckError, boom.to_s
      end
    end

    [200, {'Content-Type' => 'text/plain'}, ['pong']]
  else
    @app.call env
  end
end