Class: ScoutApm::Instruments::Elasticsearch

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ Elasticsearch

Returns a new instance of Elasticsearch.



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# File 'lib/scout_apm/instruments/elasticsearch.rb', line 8

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/elasticsearch.rb', line 6

def context
  @context
end

Instance Method Details

#install ⇒ Object 



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# File 'lib/scout_apm/instruments/elasticsearch.rb', line 21

def install
  if defined?(::Elasticsearch) &&
      defined?(::Elasticsearch::Transport) &&
      defined?(::Elasticsearch::Transport::Client)

    @installed = true

    logger.info "Instrumenting Elasticsearch"

    ::Elasticsearch::Transport::Client.class_eval do
      include ScoutApm::Tracer

      def perform_request_with_scout_instruments(*args, &block)
        name = _sanitize_name(args[1])

        self.class.instrument("Elasticsearch", name, :ignore_children => true) do
          perform_request_without_scout_instruments(*args, &block)
        end
      end

      alias_method :perform_request_without_scout_instruments, :perform_request
      alias_method :perform_request, :perform_request_with_scout_instruments

      def _sanitize_name(name)
        name = name.split("/").last.gsub(/^_/, '')
        allowed_names = ["bench",
                         "bulk",
                         "count",
                         "exists",
                         "explain",
                         "field_stats",
                         "health",
                         "mget",
                         "mlt",
                         "mpercolate",
                         "msearch",
                         "mtermvectors",
                         "percolate",
                         "query",
                         "scroll",
                         "search_shards",
                         "source",
                         "suggest",
                         "template",
                         "termvectors",
                         "update",
                         "search", ]

        if allowed_names.include?(name)
          name
        else
          "Unknown"
        end
      rescue
        "Unknown"
      end
    end
  end
end

#installed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/instruments/elasticsearch.rb', line 17

def installed?
  @installed
end

#logger ⇒ Object 



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# File 'lib/scout_apm/instruments/elasticsearch.rb', line 13

def logger
  context.logger
end