From 737480f86a6dd74fcbbc5db46d74528261f0377d Mon Sep 17 00:00:00 2001
From: iLLiCiTiT <jakub.trllo@gmail.com>
Date: Thu, 20 Aug 2020 22:51:24 +0200
Subject: [PATCH 1/3] run p[lugin proces in thread and keep QtApp event
 processing until it's finished

---
 pype/tools/pyblish_pype/control.py | 36 ++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/pype/tools/pyblish_pype/control.py b/pype/tools/pyblish_pype/control.py
index 0162848f2b..a184fe60dc 100644
--- a/pype/tools/pyblish_pype/control.py
+++ b/pype/tools/pyblish_pype/control.py
@@ -9,8 +9,9 @@ import os
 import sys
 import traceback
 import inspect
+import threading
 
-from Qt import QtCore
+from Qt import QtCore, QtWidgets
 
 import pyblish.api
 import pyblish.util
@@ -28,6 +29,28 @@ class IterationBreak(Exception):
     pass
 
 
+class ProcessThread(threading.Thread):
+    def __init__(self, plugin, context, instance):
+        super(ProcessThread, self).__init__()
+
+        self.result = None
+        self.exception = None
+
+        self.plugin = plugin
+        self.context = context
+        self.instance = instance
+
+    def run(self):
+        try:
+            result = pyblish.plugin.process(
+                self.plugin, self.context, self.instance
+            )
+            self.result = result
+        except Exception as exc:
+            self.exception = exc
+
+
+
 class Controller(QtCore.QObject):
     # Emitted when the GUI is about to start processing;
     # e.g. resetting, validating or publishing.
@@ -231,7 +254,16 @@ class Controller(QtCore.QObject):
         self.processing["nextOrder"] = plugin.order
 
         try:
-            result = pyblish.plugin.process(plugin, self.context, instance)
+            thread = ProcessThread(plugin, self.context, instance)
+            thread.start()
+            while thread.isAlive():
+                QtWidgets.QApplication.processEvents()
+
+            if thread.exception:
+                raise thread.exception
+
+            result = thread.result
+            thread.join()
             # Make note of the order at which the
             # potential error error occured.
             if result["error"] is not None:

From dbbf702430ff39083976b1b9b91543de1361da75 Mon Sep 17 00:00:00 2001
From: iLLiCiTiT <jakub.trllo@gmail.com>
Date: Thu, 20 Aug 2020 22:54:22 +0200
Subject: [PATCH 2/3] moved thread join earlier

---
 pype/tools/pyblish_pype/control.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pype/tools/pyblish_pype/control.py b/pype/tools/pyblish_pype/control.py
index a184fe60dc..0947dcd734 100644
--- a/pype/tools/pyblish_pype/control.py
+++ b/pype/tools/pyblish_pype/control.py
@@ -259,11 +259,11 @@ class Controller(QtCore.QObject):
             while thread.isAlive():
                 QtWidgets.QApplication.processEvents()
 
+            thread.join()
             if thread.exception:
                 raise thread.exception
 
             result = thread.result
-            thread.join()
             # Make note of the order at which the
             # potential error error occured.
             if result["error"] is not None:

From 53a1dc3f7505e1740fa783b3572d4502a6bab686 Mon Sep 17 00:00:00 2001
From: iLLiCiTiT <jakub.trllo@gmail.com>
Date: Fri, 21 Aug 2020 16:24:19 +0200
Subject: [PATCH 3/3] added reraising traceback stack instead of only exception

---
 pype/tools/pyblish_pype/control.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pype/tools/pyblish_pype/control.py b/pype/tools/pyblish_pype/control.py
index 0947dcd734..d73c7efad7 100644
--- a/pype/tools/pyblish_pype/control.py
+++ b/pype/tools/pyblish_pype/control.py
@@ -11,6 +11,7 @@ import traceback
 import inspect
 import threading
 
+import six
 from Qt import QtCore, QtWidgets
 
 import pyblish.api
@@ -46,9 +47,8 @@ class ProcessThread(threading.Thread):
                 self.plugin, self.context, self.instance
             )
             self.result = result
-        except Exception as exc:
-            self.exception = exc
-
+        except Exception:
+            self.exception = sys.exc_info()
 
 
 class Controller(QtCore.QObject):
@@ -261,7 +261,7 @@ class Controller(QtCore.QObject):
 
             thread.join()
             if thread.exception:
-                raise thread.exception
+                six.reraise(*thread.exception)
 
             result = thread.result
             # Make note of the order at which the