Module: OracleBMC::LoadBalancer::Util

Defined in:
lib/oraclebmc/load_balancer/util.rb

Overview

Load balancer utility methods

Class Method Summary collapse

Class Method Details

.wait_on_work_request(client, work_request_id, max_interval_seconds: 30, max_wait_seconds: 1200, raise_error_on_failure: true) ⇒ WorkRequest

Wait until the work request succeeds or fails, or max_wait_seconds is reached. The work request will be polled at an increasing rate, with a maximum of max_interval_seconds between requests.

Parameters:

  • client (LoadBalancerClient) —

    A load balancer client

  • max_interval_seconds (Integer) (defaults to: 30) —

    The maximum interval between queries, in seconds.

  • max_wait_seconds (Integer) (defaults to: 1200) —

    The maximum total time to wait, in seconds.

  • raise_error_on_failure (Boolean) (defaults to: true) —

    If true, then a WorkRequestFailedError will be raised if the work request is in a failed state.

Returns:

  • (WorkRequest) —

    The final work request



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# File 'lib/oraclebmc/load_balancer/util.rb', line 17

def self.wait_on_work_request(client, work_request_id, max_interval_seconds: 30, max_wait_seconds: 1200, raise_error_on_failure:true)
  fail "Work request ID not specified." unless work_request_id

  interval_seconds = 1
  start_time = Time.now

  while true
    response = client.get_work_request(work_request_id)
    if response.data.lifecycle_state == OracleBMC::LoadBalancer::Models::WorkRequest::LIFECYCLE_STATE_SUCCEEDED
      return response.data
    elsif response.data.lifecycle_state == OracleBMC::LoadBalancer::Models::WorkRequest::LIFECYCLE_STATE_FAILED
      if raise_error_on_failure
        raise OracleBMC::Errors::WorkRequestFailedError.new(response.data)
      else
        return response.data
      end
    end

    elapsed_seconds = (Time.now - start_time).to_i

    if elapsed_seconds + interval_seconds > max_wait_seconds
      if max_wait_seconds > elapsed_seconds
        # Make one last request right at the maximum wait time.
        interval_seconds = max_wait_seconds - elapsed_seconds
      else
        raise OracleBMC::Errors::MaximumWaitTimeExceededError.new('Maximum wait time has been exceeded.')
      end
    end

    sleep(interval_seconds)

    interval_seconds *= 2
    if interval_seconds > max_interval_seconds
      interval_seconds = max_interval_seconds
    end
  end
end