hydra-queue-runner: Ensure regular status dumps

Dependencies

• [2] 3ECTCHKL Make queue runner internal status available under /queue-runner-status
• [3] BG6PEOB2 Make the output size limit configurable
• [4] RQUAATWB Add status dump facility
• [5] XV4AEKJC hydra-queue-runner: Handle status queries on the main thread
• [6] FULDVXE2 Periodically dump/log status
• [7] PLOZBRTR Add command ‘hydra-queue-runner --status’ to show current status
• [*] 24BMQDZA Start of single-process hydra-queue-runner
• [*] HJOEIMLR Refactor

Change contents

• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 686
  [4.2018]→[4.104:171](∅→∅)
  − if (log) printMsg(lvlInfo, format("status: %1%") % out.str());
  [4.2018]

  [4.171]
  + if (log && time(0) >= lastStatusLogged + statusLogInterval) {

  + printMsg(lvlInfo, format("status: %1%") % out.str());

  + lastStatusLogged = time(0);

  + }
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 832
  [4.551]→[4.208:278](∅→∅),[4.278]→[2.57:101](∅→∅)
  − bool timeout = conn->await_notification(300, 0) == 0;

  − dumpStatus(*conn, timeout);
  [4.551]

  [4.674]
  + conn->await_notification(statusLogInterval / 2 + 1, 0);

  + dumpStatus(*conn, true);
• edit in src/hydra-queue-runner/state.hh at line 362
  [3.4353]

  [10.6778]
  + time_t lastStatusLogged = 0;

  + const int statusLogInterval = 20;

  +