Class: Rubino::Metrics::Counter

Inherits:
Object
  • Object
show all
Defined in:
lib/rubino/metrics.rb

Overview

Monotonic counter keyed by label set. Thread-safe via internal mutex.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, help) ⇒ Counter

Returns a new instance of Counter.



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# File 'lib/rubino/metrics.rb', line 24

def initialize(name, help)
  @name = name
  @help = help
  @values = Hash.new(0)
  @mutex = Mutex.new
end

Instance Attribute Details

#help ⇒ Object (readonly)

Returns the value of attribute help.



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# File 'lib/rubino/metrics.rb', line 22

def help
  @help
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/rubino/metrics.rb', line 22

def name
  @name
end

Instance Method Details

#each ⇒ Object 



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# File 'lib/rubino/metrics.rb', line 36

def each(&)
  @mutex.synchronize { @values.dup }.each(&)
end

#increment(by: 1, **labels) ⇒ Object

Add ‘by` to the counter for the given label set (default 1).



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# File 'lib/rubino/metrics.rb', line 32

def increment(by: 1, **labels)
  @mutex.synchronize { @values[labels] += by }
end

#type ⇒ Object 



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# File 'lib/rubino/metrics.rb', line 40

def type = :counter