hydra-queue-runner: Keep some notification statistics

Dependencies

• [2] SL3WSRAC hydra-queue-runner: Limit memory usage
• [*] 24BMQDZA Start of single-process hydra-queue-runner
• [*] IE2PRAQU hydra-queue-runner: Send build notifications
• [*] HJOEIMLR Refactor
• [*] BRAESISH Warn if PostgreSQL appears stalled

Change contents

• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 487
  [5.1801]

  [5.1801]
  +

  + MaintainCount mc(nrNotificationsInProgress);
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 492
  [5.1897]

  [5.1897]
  + auto now1 = std::chrono::steady_clock::now();

  +
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 520
  [5.2506]

  [5.2506]
  + auto now2 = std::chrono::steady_clock::now();

  +

  + nrNotificationTimeMs += std::chrono::duration_cast<std::chrono::milliseconds>(now2 - now1).count();

  + nrNotificationsDone++;

  +
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 526
  [5.2545]

  [5.2545]
  + nrNotificationsFailed++;
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 602
  [2.1487]

  [2.1487]
  + root.attr("nrNotificationsDone", nrNotificationsDone);

  + root.attr("nrNotificationsFailed", nrNotificationsFailed);

  + root.attr("nrNotificationsInProgress", nrNotificationsInProgress);

  + root.attr("nrNotificationsPending", notificationSenderQueue.lock()->size());

  + root.attr("nrNotificationTimeMs", nrNotificationTimeMs);

  + uint64_t nrNotificationsTotal = nrNotificationsDone + nrNotificationsFailed;

  + root.attr("nrNotificationTimeAvgMs", nrNotificationsTotal == 0 ? 0.0 : (float) nrNotificationTimeMs / nrNotificationsTotal);
• edit in src/hydra-queue-runner/state.hh at line 337
  [7.910]

  [6.6084]
  + counter nrNotificationsDone{0};

  + counter nrNotificationsFailed{0};

  + counter nrNotificationsInProgress{0};

  + counter nrNotificationTimeMs{0};