Module: Philiprehberger::Circuit::Metrics

Included in:
Breaker
Defined in:
lib/philiprehberger/circuit/metrics.rb

Overview

Thread-safe counters and state change log for monitoring

Instance Method Summary collapse

Instance Method Details

#last_failure ⇒ Hash?

Most recent failure recorded by the breaker, or nil when none has occurred since the last reset.

Returns:

  • (Hash, nil) —

    { at: Time, error_class: Class, message: String } or nil



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# File 'lib/philiprehberger/circuit/metrics.rb', line 15

def last_failure
  @mutex.synchronize { @last_failure&.dup }
end

#metrics ⇒ Object 



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# File 'lib/philiprehberger/circuit/metrics.rb', line 7

def metrics
  @mutex.synchronize { metrics_snapshot }
end

#metrics_reset! ⇒ Object

Zero counters and clear the state-change log without altering the circuit’s current state or transition timestamps. Also clears the last_failure record.



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# File 'lib/philiprehberger/circuit/metrics.rb', line 22

def metrics_reset!
  @mutex.synchronize do
    @success_count = 0
    @metrics_failure_count = 0
    @rejected_count = 0
    @state_changes = []
    @last_failure = nil
  end
  self
end