public function testCounters()
 {
     $obj = new HarbormasterObject();
     $conn_w = $obj->establishConnection('w');
     // Test that the counter bascially behaves as expected.
     $this->assertEqual(1, LiskDAO::loadNextCounterValue($conn_w, 'a'));
     $this->assertEqual(2, LiskDAO::loadNextCounterValue($conn_w, 'a'));
     $this->assertEqual(3, LiskDAO::loadNextCounterValue($conn_w, 'a'));
     // This first insert is primarily a test that the previous LAST_INSERT_ID()
     // value does not bleed into the creation of a new counter.
     $this->assertEqual(1, LiskDAO::loadNextCounterValue($conn_w, 'b'));
     $this->assertEqual(2, LiskDAO::loadNextCounterValue($conn_w, 'b'));
     // Test alternate access/overwrite methods.
     $this->assertEqual(3, LiskDAO::loadCurrentCounterValue($conn_w, 'a'));
     LiskDAO::overwriteCounterValue($conn_w, 'a', 42);
     $this->assertEqual(42, LiskDAO::loadCurrentCounterValue($conn_w, 'a'));
     $this->assertEqual(43, LiskDAO::loadNextCounterValue($conn_w, 'a'));
     // These inserts alternate database connections. Since unit tests are
     // transactional by default, we need to break out of them or we'll deadlock
     // since the transactions don't normally close until we exit the test.
     LiskDAO::endIsolateAllLiskEffectsToTransactions();
     try {
         $conn_1 = $obj->establishConnection('w', $force_new = true);
         $conn_2 = $obj->establishConnection('w', $force_new = true);
         $this->assertEqual(1, LiskDAO::loadNextCounterValue($conn_1, 'z'));
         $this->assertEqual(2, LiskDAO::loadNextCounterValue($conn_2, 'z'));
         $this->assertEqual(3, LiskDAO::loadNextCounterValue($conn_1, 'z'));
         $this->assertEqual(4, LiskDAO::loadNextCounterValue($conn_2, 'z'));
         $this->assertEqual(5, LiskDAO::loadNextCounterValue($conn_1, 'z'));
         LiskDAO::beginIsolateAllLiskEffectsToTransactions();
     } catch (Exception $ex) {
         LiskDAO::beginIsolateAllLiskEffectsToTransactions();
         throw $ex;
     }
 }
 private function updateCursor($value)
 {
     LiskDAO::overwriteCounterValue(id(new PhabricatorWorkerTrigger())->establishConnection('w'), self::COUNTER_CURSOR, $value);
 }