Class: Tenable::Middleware::Retry

Inherits:
Faraday::Middleware
  • Object
show all
Defined in:
lib/tenable/middleware/retry.rb

Constant Summary collapse

DEFAULT_MAX_RETRIES = 
3
RETRYABLE_STATUS_CODES = 
[429, 500, 502, 503, 504].freeze
BASE_DELAY = 
1

Instance Method Summary collapse

Constructor Details

#initialize(app, max_retries: DEFAULT_MAX_RETRIES) ⇒ Retry

Returns a new instance of Retry.



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# File 'lib/tenable/middleware/retry.rb', line 10

def initialize(app, max_retries: DEFAULT_MAX_RETRIES)
  super(app)
  @max_retries = max_retries
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/tenable/middleware/retry.rb', line 15

def call(env)
  attempt = 0
  loop do
    attempt += 1
    response = @app.call(env.dup)

    return response unless retryable?(response.status)

    raise_if_exhausted(response, attempt) if attempt >= @max_retries

    sleep(retry_delay(response, attempt))
  end
rescue Faraday::Error
  raise if attempt >= @max_retries

  sleep(BASE_DELAY * (2**(attempt - 1)))
  retry
end