```ruby
module Bipbip

  class Plugin::Nginx < Plugin

    def metric_identifier(server)
      Bipbip.fqdn + '::localhost'
    end

    def metrics_schema
      [
          {:name => 'connections_requested', :type => 'ce_counter', :unit => 'Requests'},
      ]
    end

    def monitor(server)
      uri = URI.parse(server['url'])
      response = Net::HTTP.get_response(uri)

      connections_requested = 0
      if response.code == "200"
        nstats = response.body.split(/\r*\n/)
        connections_requested = nstats[2].lstrip.split(/\s+/)[2].to_i
      end

      {:connections_requested => connections_requested}
    end
  end
end
```

Raise error if response is not 200
user
```ruby
module Bipbip

  class Plugin::Nginx < Plugin

    def metric_identifier(server)
      Bipbip.fqdn + '::localhost'
    end

    def metrics_schema
      [
          {:name => 'connections_requested', :type => 'ce_counter', :unit => 'Requests'},
      ]
    end

    def monitor(server)
      uri = URI.parse(server['url'])
      response = Net::HTTP.get_response(uri)

      raise "Invalid response from server at #{server['url']}" unless response.code == "200"

      nstats = response.body.split(/\r*\n/)
      connections_requested = nstats[2].lstrip.split(/\s+/)[2].to_i

      {:connections_requested => connections_requested}
    end
  end
end
```
assistant