Class: OpticsAgent::RackMiddleware

Inherits:
Object
  • Object
show all
Defined in:
lib/optics-agent/rack-middleware.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ RackMiddleware

Returns a new instance of RackMiddleware.



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# File 'lib/optics-agent/rack-middleware.rb', line 6

def initialize(app, options={})
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/optics-agent/rack-middleware.rb', line 10

def call(env)
  begin
    start_time = Time.now

    # XXX: figure out a way to pass this in here
    agent = OpticsAgent::Agent.instance
    query = OpticsAgent::Reporting::Query.new

    # Attach so resolver middleware can access
    env[:optics_agent] = {
      agent: agent,
      query: query
    }
    env[:optics_agent].define_singleton_method(:with_document) do |document|
      self[:query].document = document
      self
    end

    result = @app.call(env)

    # XXX: this approach means if the user forgets to call with_document
    # we just never log queries. Can we detect if the request is a graphql one?
    if (query.document)
      agent.add_query(query, env, start_time, Time.now)
    end

    result
  rescue Exception => e
    puts "Rack Middleware Error: #{e}"
    puts e.backtrace
  end
end