Class: ScoutApm::Instruments::Redis5

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/instruments/redis5.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ Redis5

Returns a new instance of Redis5.



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# File 'lib/scout_apm/instruments/redis5.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/redis5.rb', line 4

def context
  @context
end

Instance Method Details

#install(prepend:) ⇒ Object 



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# File 'lib/scout_apm/instruments/redis5.rb', line 19

def install(prepend:)
  if defined?(::Redis) && defined?(::Redis::Client) && ::Redis::Client.instance_methods(false).include?(:call_v)
    @installed = true
  
    logger.info "Instrumenting Redis5. Prepend: #{prepend}"
  
    if prepend
      ::Redis::Client.send(:include, ScoutApm::Tracer)
      ::Redis::Client.send(:prepend, Redis5ClientInstrumentationPrepend)
    else
      ::Redis::Client.class_eval do
        include ScoutApm::Tracer
  
        def call_with_scout_instruments(args, &block)
          command = args.first rescue "Unknown"
  
          self.class.instrument("Redis", command) do
            call_without_scout_instruments(args, &block)
          end
        end
  
        alias_method :call_without_scout_instruments, :call_v
        alias_method :call_v, :call_with_scout_instruments
      end
    end
  end
end

#installed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/instruments/redis5.rb', line 15

def installed?
  @installed
end

#logger ⇒ Object 



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# File 'lib/scout_apm/instruments/redis5.rb', line 11

def logger
  context.logger
end