Class: Pinot::CircuitBreakerRegistry

Inherits:
Object
  • Object
show all
Defined in:
lib/pinot/circuit_breaker.rb

Overview

Thread-safe registry that lazily creates and caches one CircuitBreaker per broker address string. Shared by all Connection instances built from the same ClientConfig so that failures from parallel queries accumulate correctly.

Instance Method Summary collapse

Constructor Details

#initialize(failure_threshold: 5, open_timeout: 30) ⇒ CircuitBreakerRegistry

Returns a new instance of CircuitBreakerRegistry.



118
119
120
121
122
123
 
# File 'lib/pinot/circuit_breaker.rb', line 118

def initialize(failure_threshold: 5, open_timeout: 30)
  @failure_threshold = failure_threshold
  @open_timeout      = open_timeout
  @breakers          = {}
  @mutex             = Mutex.new
end

Instance Method Details

#for(broker_address) ⇒ Object 



125
126
127
128
129
130
131
132
 
# File 'lib/pinot/circuit_breaker.rb', line 125

def for(broker_address)
  @mutex.synchronize do
    @breakers[broker_address] ||= CircuitBreaker.new(
      failure_threshold: @failure_threshold,
      open_timeout:      @open_timeout
    )
  end
end

#open?(broker_address) ⇒ Boolean

Returns:

  • (Boolean) 


134
135
136
 
# File 'lib/pinot/circuit_breaker.rb', line 134

def open?(broker_address)
  @mutex.synchronize { @breakers[broker_address]&.open? || false }
end

#reset_all ⇒ Object

Remove all state (useful for testing).



139
140
141
 
# File 'lib/pinot/circuit_breaker.rb', line 139

def reset_all
  @mutex.synchronize { @breakers.clear }
end