Module: Legion::Transport::TenantQuota

Extended by:
Logging::Helper
Defined in:
lib/legion/transport/tenant_quota.rb

Defined Under Namespace

Classes: QuotaExceededError

Constant Summary collapse

WINDOW_SECONDS = 
1
STALE_SECONDS = 
300

Class Method Summary collapse

Class Method Details

.check_publish(tenant_id, message_size: 0) ⇒ Object 



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# File 'lib/legion/transport/tenant_quota.rb', line 22

def check_publish(tenant_id, message_size: 0)
  return true unless enabled?

  msg_limit  = rate_limit(tenant_id)
  size_limit = byte_limit(tenant_id)
  return true if msg_limit.nil? && size_limit.nil?

  now = current_window

  tenant_mutex(tenant_id).synchronize do
    @counters[tenant_id] ||= { window: now, count: 0, bytes: 0, updated_at: now }
    entry = @counters[tenant_id]
    if entry[:window] != now
      entry[:window]     = now
      entry[:count]      = 0
      entry[:bytes]      = 0
      entry[:updated_at] = now
    end

    if msg_limit && entry[:count] >= msg_limit
      log.warn "Tenant #{tenant_id} exceeded message rate quota (#{msg_limit} msg/s)"
      raise QuotaExceededError, "Tenant #{tenant_id} exceeded message rate quota (#{msg_limit} msg/s)"
    end

    if size_limit && (entry[:bytes] + message_size) > size_limit
      log.warn "Tenant #{tenant_id} exceeded byte rate quota (#{size_limit} bytes/s)"
      raise QuotaExceededError, "Tenant #{tenant_id} exceeded byte rate quota (#{size_limit} bytes/s)"
    end

    entry[:count]      += 1
    entry[:bytes]      += message_size
    entry[:updated_at]  = now
  end

  sweep_stale!
  true
end

.enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/transport/tenant_quota.rb', line 60

def enabled?
  TenantTopology.enabled?
end

.reset! ⇒ Object 



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# File 'lib/legion/transport/tenant_quota.rb', line 64

def reset!
  @registry_mutex.synchronize do
    @counters.clear
    @mutexes.clear
  end
end