Class: Async::App::WebApps::MetricsApp::Serializer

Inherits:
Object
  • Object
show all
Defined in:
lib/async/app/web_apps/metrics_app/serializer.rb

Instance Method Summary collapse

Constructor Details

#initialize(prefix:, store:) ⇒ Serializer

Returns a new instance of Serializer.



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# File 'lib/async/app/web_apps/metrics_app/serializer.rb', line 4

def initialize(prefix:, store:)
  @prefix = prefix
  @store = store
end

Instance Method Details

#metric_labels(value) ⇒ Object 



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# File 'lib/async/app/web_apps/metrics_app/serializer.rb', line 18

def metric_labels(value) = value[:labels].map { |tag, tag_value| "#{tag}=#{tag_value.to_s.inspect}" }.join(",")

#metric_line(value) ⇒ Object 



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# File 'lib/async/app/web_apps/metrics_app/serializer.rb', line 20

def metric_line(value)
  "#{metric_name(value)}{#{metric_labels(value)}} #{value[:value]}" if value.key?(:value)
end

#metric_name(value) ⇒ Object 



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# File 'lib/async/app/web_apps/metrics_app/serializer.rb', line 16

def metric_name(value) = "#{@prefix}_#{value[:name]}_#{value[:suffix]}"

#serialize ⇒ Object 



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# File 'lib/async/app/web_apps/metrics_app/serializer.rb', line 9

def serialize
  @store.flat_map { metric_line(_1) }
        .compact
        .join("\n")
        .then { "#{_1}\n" }
end