fix: make sure dependent processes also start when triggered from process which autostarts

Author: Michael Hammann

supervisor/process.py

@@ -195,6 +195,33 @@ def spawn(self):
 
         Return the process id.  If the fork() call fails, return None.
         """
+        # this section is ownly triggered when using autostart - 
+        # otherwise the dependencies are handled in the rpcinterface
+        # check if the process is dependent upon any other process and if so,
+        # make sure that one is in the RUNNING state
+        if self.config.depends_on is not None:
+            # keep track of RUNNING childs
+            running_childs = set()
+            # wait/loop until all childs are running
+            while set(self.config.depends_on.keys()) != running_childs:
+                for child in self.config.depends_on.values():
+                    if child.state is not ProcessStates.RUNNING:
+                        # potentially remove child, if it is in running list
+                        if child.config.name in running_childs:
+                            running_childs.remove(child.config.name)
+                        # check if it needs to be started
+                        if child.state is not (ProcessStates.STARTING or ProcessStates.RUNNING):
+                            child.spawn()
+                        else:
+                            child.transition()
+                            msg = ("waiting on dependee process {} to reach running state - currently in {}"
+                            .format(child.config.name, getProcessStateDescription(child.state)))
+                            self.config.options.logger.warn(msg)
+                    else:
+                        # child is running - add to set
+                        running_childs.add(child.config.name)
+                time.sleep(0.5)
+
         options = self.config.options
         processname = as_string(self.config.name)