--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/galaxy/util/lazy_process.py	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,57 @@
+import subprocess
+import threading
+import time
+
+
+class LazyProcess(object):
+    """ Abstraction describing a command line launching a service - probably
+    as needed as functionality is accessed in Galaxy.
+    """
+
+    def __init__(self, command_and_args):
+        self.command_and_args = command_and_args
+        self.thread_lock = threading.Lock()
+        self.allow_process_request = True
+        self.process = None
+
+    def start_process(self):
+        with self.thread_lock:
+            if self.allow_process_request:
+                self.allow_process_request = False
+                t = threading.Thread(target=self.__start)
+                t.daemon = True
+                t.start()
+
+    def __start(self):
+        with self.thread_lock:
+            self.process = subprocess.Popen(self.command_and_args, close_fds=True)
+
+    def shutdown(self):
+        with self.thread_lock:
+            self.allow_process_request = False
+        if self.running:
+            self.process.terminate()
+            time.sleep(.01)
+            if self.running:
+                self.process.kill()
+
+    @property
+    def running(self):
+        return self.process and not self.process.poll()
+
+
+class NoOpLazyProcess(object):
+    """ LazyProcess abstraction meant to describe potentially optional
+    services, in those cases where one is not configured or valid, this
+    class can be used in place of LazyProcess.
+    """
+
+    def start_process(self):
+        return
+
+    def shutdown(self):
+        return
+
+    @property
+    def running(self):
+        return False