Class: Prometheus::Client::Registry

Inherits:
Object
  • Object
show all
Defined in:
lib/prometheus/client/registry.rb

Overview

Registry

Defined Under Namespace

Classes: AlreadyRegisteredError

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Registry

Returns a new instance of Registry.



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# File 'lib/prometheus/client/registry.rb', line 16

def initialize
  @metrics = {}
  @mutex = Mutex.new
end

Instance Method Details

#counter(name, docstring, base_labels = {}) ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 40

def counter(name, docstring, base_labels = {})
  register(Counter.new(name, docstring, base_labels))
end

#exist?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/prometheus/client/registry.rb', line 57

def exist?(name)
  @metrics.key?(name)
end

#gauge(name, docstring, base_labels = {}) ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 48

def gauge(name, docstring, base_labels = {})
  register(Gauge.new(name, docstring, base_labels))
end

#get(name) ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 61

def get(name)
  @metrics[name.to_sym]
end

#histogram(name, docstring, base_labels = {}, buckets = Histogram::DEFAULT_BUCKETS) ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 52

def histogram(name, docstring, base_labels = {},
              buckets = Histogram::DEFAULT_BUCKETS)
  register(Histogram.new(name, docstring, base_labels, buckets))
end

#metrics ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 65

def metrics
  @metrics.values
end

#register(metric) ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 21

def register(metric)
  name = metric.name

  @mutex.synchronize do
    if exist?(name.to_sym)
      raise AlreadyRegisteredError, "#{name} has already been registered"
    end
    @metrics[name.to_sym] = metric
  end

  metric
end

#summary(name, docstring, base_labels = {}) ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 44

def summary(name, docstring, base_labels = {})
  register(Summary.new(name, docstring, base_labels))
end

#unregister(name) ⇒ Object 



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# File 'lib/prometheus/client/registry.rb', line 34

def unregister(name)
  @mutex.synchronize do
    @metrics.delete(name.to_sym)
  end
end