Merge pull request #99 from neighborhoods/KOJO-180-clean-up-root-proc…

…ess-pool-after-jsclp-exit

KOJO-180 | Clean up Root's Process Pool after JSCLP exit

src/Process/Pool/Strategy.php

@@ -21,7 +21,7 @@ public function childProcessExited(ProcessInterface $process): StrategyInterface
         } elseif ($process instanceof ListenerInterface) {
             $this->_listenerProcessExited($process);
         } elseif ($process instanceof JobStateChangelogProcessorInterface) {
-            // A new STL process will be created by the Root when appropriate
+            $this->_jobStateChangelogProcessorProcessExited($process);
         } else {
             $className = get_class($process);
             throw new \UnexpectedValueException("Unexpected process class[$className].");
@@ -98,6 +98,20 @@ protected function _jobProcessExited(JobInterface $jobProcess): Strategy
         return $this;
     }
 
+    protected function _jobStateChangelogProcessorProcessExited(JobStateChangelogProcessorInterface $jsclpProcess) : Strategy
+    {
+        $this->_getProcessPool()->freeChildProcess($jsclpProcess->getProcessId());
+
+        // usually this is where we'd spawn a new JSCLP to take the place of the one that exited, but
+        // that is handled by \Neighborhoods\Kojo\Process\Root::pollSingletonProcesses()
+
+        if (!$this->_getProcessPool()->hasAlarm()) {
+            $this->_getProcessPool()->setAlarm($this->getMaxAlarmTime());
+        }
+
+        return $this;
+    }
+
     public function receivedAlarm(): StrategyInterface
     {
         if (!$this->_getProcessPool()->isFull() && $this->_getProcessPool()->canEnvironmentSustainAdditionProcesses()) {