Class: MongoRequestLogger::Rack

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Rack

Returns a new instance of Rack.



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# File 'lib/mongo_request_logger/rack.rb', line 18

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

Class Method Details

.ignore_prefix(prefix) ⇒ Object 



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# File 'lib/mongo_request_logger/rack.rb', line 11

def self.ignore_prefix prefix
  self.ignore_prefixes ||= []
  self.ignore_prefixes << prefix
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/mongo_request_logger/rack.rb', line 27

def call(env)
  if logger
    env['rack.logger'] = logger
  end

  if logger && logger.is_a?(MongoRequestLogger::Logger)

    #HACK: Don't log the log viewer itself
    self.class.ignore_prefixes.each do |prefix|
      if env["PATH_INFO"].to_s.start_with? prefix
        return @app.call(env)
      end
    end
    # TODO: filter parameters
    # KLUDGE: this will cause parameter parsing to happen twice: once here, once later on in Rails.
    # Or maybe it's automatically cached in env?
    logger.log_request do
      begin
        request = ::Rack::Request.new(env)
        begin
          cl = request.content_length.to_i
        rescue
          cl = 0
        end

        options = {
            path: request.path_info,
            host: request.host_with_port,
            user_agent: request.user_agent,
            ip: request.ip,
            referer: request.referrer,
            query_string: request.query_string,
            request_method: request.request_method,
            content_type: request.content_type,
            content_length: cl,
            params: filter(request.params)
        }
        logger.add_metadata options
        logger.add_metadata_set :tags, "rack"
        status, headers, body = @app.call(env)
        logger.add_metadata response: status.to_i
        [status, headers, body]
      rescue Exception => e
        logger.add_metadata response: 500
        raise
      end
    end
  else
    # No logger configured - just pass the request straight through
    @app.call(env)
  end

end

#filter(params) ⇒ Object 



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# File 'lib/mongo_request_logger/rack.rb', line 81

def filter(params)
  filtered = params.dup
  filtered.each do |key, value|
    if (key =~ /password/) && value.is_a?(String)
      filtered[key] = '*filtered*'
    end
  end
  filtered
end

#logger ⇒ Object 



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# File 'lib/mongo_request_logger/rack.rb', line 23

def logger
  self.class.logger
end