Class: GraphQL::Flamegraph::Instrumentation

Inherits:
Object
  • Object
show all
Defined in:
lib/graphql/flamegraph/instrumentation.rb

Instance Method Summary collapse

Constructor Details

#initialize(path: nil) ⇒ Instrumentation

Returns a new instance of Instrumentation.



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# File 'lib/graphql/flamegraph/instrumentation.rb', line 7

def initialize(path: nil)
  validate_directory!(path) if path
  @path = path
end

Instance Method Details

#after_query(query) ⇒ Object 



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# File 'lib/graphql/flamegraph/instrumentation.rb', line 16

def after_query(query)
  return unless enabled?(query)

  result = Result.new(cache(query))
  query.context[:flamegraph] = result
  return unless @path

  file_path = Dir::Tmpname.create(['graphql-flamegraph-', '.txt'], @path) {}
  File.write(file_path, result.serialize)
  puts <<~MESSAGE
    Check your flamegraph at #{file_path}
    Open it in https://www.speedscope.app/ or in local speedscope:

        speedscope #{file_path}

  MESSAGE
end

#before_query(query) ⇒ Object 



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# File 'lib/graphql/flamegraph/instrumentation.rb', line 12

def before_query(query)
  reset_cache!(query)
end