Class: ScoutApm::Instruments::Redis

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/instruments/redis.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ Redis

Returns a new instance of Redis.



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# File 'lib/scout_apm/instruments/redis.rb', line 6

def initialize(context)
  @context = context
  @installed = false
end

Instance Attribute Details

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/scout_apm/instruments/redis.rb', line 4

def context
  @context
end

Instance Method Details

#install ⇒ Object 



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# File 'lib/scout_apm/instruments/redis.rb', line 19

def install
  if defined?(::Redis) && defined?(::Redis::Client)
    @installed = true

    logger.info "Instrumenting Redis"

    ::Redis::Client.class_eval do
      include ScoutApm::Tracer

      def call_with_scout_instruments(*args, &block)
        command = args.first.first rescue "Unknown"

        self.class.instrument("Redis", command) do
          call_without_scout_instruments(*args, &block)
        end
      end

      alias_method :call_without_scout_instruments, :call
      alias_method :call, :call_with_scout_instruments
    end
  end
end

#installed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/instruments/redis.rb', line 15

def installed?
  @installed
end

#logger ⇒ Object 



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# File 'lib/scout_apm/instruments/redis.rb', line 11

def logger
  context.logger
end