Class: StackifyRubyAPM::Spies::RedisSpy Private

Inherits:
Object
  • Object
show all
Defined in:
lib/stackify_apm/spies/redis.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Instance Method Details

#install ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

rubocop:disable Metrics/CyclomaticComplexity rubocop:disable Metrics/PerceivedComplexity



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# File 'lib/stackify_apm/spies/redis.rb', line 12

def install
  ::Redis::Client.class_eval do
    alias_method 'call_without_apm', 'call'

    def call(command, &block)
      name = command[0].upcase.to_s
      type = 'db.redis'
      redis_details = command[1].is_a?(String) ? command[1].split(':') : []
      redis_nspace = !redis_details.blank? ? redis_details[0] : ''
      redis_key = ''

      # Checks CACHEKEY value
      if !redis_details.blank? && redis_details[1]
        # Initially sets the CACHEKEY value
        args = redis_details[1].split('/')
        redis_key = args[0]

        # If command has passed __method__, it will be included in the CACHEKEY value
        # Possible formats:
        # `<namespace:key/method_name/expires_in=300/ttl=60/>`
        # `<namespace:key/expires_in=300/ttl=60/>`
        redis_key = args[0..1].join('/') if args.length > 1 && !args[1].include?('=')
      end

      return call_without_apm(command, &block) if command[0] == :auth

      context = {
        PROVIDER: 'Redis',
        CATEGORY: 'Cache',
        SUBCATEGORY: 'Execute',
        COMPONENT_CATEGORY: 'Cache',
        COMPONENT_DETAIL: 'Execute',
        THREAD_ID: Thread.current.object_id,
        OPERATION: name
      }.tap do |hash|
        hash[:CACHEKEY] = redis_key unless redis_key.empty?
        hash[:CACHENAME] = redis_nspace unless redis_nspace.empty?
      end

      ctx = Span::Context.new(context)

      StackifyRubyAPM.span name, type, context: ctx do
        call_without_apm(command, &block)
      end
    end
  end
end