Periodically close RemoteStore connections

Dependencies

• [2] 7LWB2J2Z Periodically clear orphaned build steps
• [3] DYVETV7L hydra-queue-runner: Allow multiple concurrent daemon connections
• [*] 24BMQDZA Start of single-process hydra-queue-runner
• [*] PDI5YPBY Use store-api for binary cache instantiation
• [*] ENXUSMSV Make concurrency more robust

Change contents

• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 11
  [6.24]

  [7.19]
  + #include "remote-store.hh"
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 818
  [3.74]

  [3.74]
  + localParams["max-connection-age"] = "600";
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 892
  [2.1641]

  [2.1641]
  + }

  + }

  + }).detach();

  +

  + /* Make sure that old daemon connections are closed even when

  + we're not doing much. */

  + std::thread([&]() {

  + while (true) {

  + sleep(10);

  + try {

  + if (auto remoteStore = getDestStore().dynamic_pointer_cast<RemoteStore>())

  + remoteStore->flushBadConnections();

  + } catch (std::exception & e) {

  + printMsg(lvlError, format("connection flush thread: %1%") % e.what());