Class: Logtide::Metrics

Inherits:

Object

• Object
• Logtide::Metrics

Defined in:

lib/logtide/metrics.rb

Overview

Thread-safe self-metrics counters (spec 002 section 9).

Constant Summary

COUNTERS =

%i[logs_sent logs_dropped errors retries circuit_breaker_trips].freeze

Instance Method Summary

• #increment(name, amount = 1) ⇒ Object
• #initialize ⇒ Metrics constructor

  A new instance of Metrics.

• #reset ⇒ Object
• #snapshot ⇒ Object

Constructor Details

#initialize ⇒ Metrics

Returns a new instance of Metrics.

# File 'lib/logtide/metrics.rb', line 8

def initialize
  @mutex = Mutex.new
  @counters = COUNTERS.to_h { |name| [name, 0] }
end

Instance Method Details

#increment(name, amount = 1) ⇒ Object

# File 'lib/logtide/metrics.rb', line 13

def increment(name, amount = 1)
  @mutex.synchronize { @counters[name] += amount }
end

#reset ⇒ Object

# File 'lib/logtide/metrics.rb', line 21

def reset
  @mutex.synchronize { COUNTERS.each { |name| @counters[name] = 0 } }
end

#snapshot ⇒ Object

# File 'lib/logtide/metrics.rb', line 17

def snapshot
  @mutex.synchronize { @counters.dup }
end