Method: NewRelic::Agent::AttributeFilter#setup_key_cache

Defined in:
lib/new_relic/agent/attribute_filter.rb

#setup_key_cache ⇒ Object

Note the key_cache is a global cache, accessible by multiple threads, but is intentionally left unsynchronized for liveness. Writes will always involve writing the same boolean value for each key, so there is no worry of one value clobbering another. For reads, if a value hasn’t been written to the cache yet, the worst that will happen is that it will run through the filter rules again. Both reads and writes will become eventually consistent.

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# File 'lib/new_relic/agent/attribute_filter.rb', line 152

def setup_key_cache
  destinations = [
    DST_TRANSACTION_EVENTS,
    DST_TRANSACTION_TRACER,
    DST_ERROR_COLLECTOR,
    DST_BROWSER_MONITORING,
    DST_SPAN_EVENTS,
    DST_TRANSACTION_SEGMENTS,
    DST_ALL
  ]

  @key_cache = destinations.inject({}) do |memo, destination|
    memo[destination] = {}
    memo
  end
end