Try to make Pyro4 and LibreOffice talk to each other. Failing miserably

openlp.py

@@ -20,13 +20,15 @@
 # with this program; if not, write to the Free Software Foundation, Inc., 59  #
 # Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
 ###############################################################################
-
-import sys
+import faulthandler
 import multiprocessing
+import sys
 
 from openlp.core.common import is_win, is_macosx
 from openlp.core import main
 
+faulthandler.enable()
+
 
 if __name__ == '__main__':
     """

openlp/core/common/path.py

@@ -37,6 +37,8 @@ def path_to_str(path=None):
     :return: An empty string if :param:`path` is None, else a string representation of the :param:`path`
     :rtype: str
     """
+    if isinstance(path, str):
+        return path
     if not isinstance(path, Path) and path is not None:
         raise TypeError('parameter \'path\' must be of type Path or NoneType')
     if path is None:

openlp/plugins/presentations/lib/libreofficeserver.py

@@ -61,6 +61,13 @@ class TextType(object):
     Notes = 2
 
 
+class LibreOfficeException(Exception):
+    """
+    A specific exception for LO
+    """
+    pass
+
+
 @expose
 class LibreOfficeServer(object):
     """
@@ -71,7 +78,6 @@ class LibreOfficeServer(object):
         Set up the server
         """
         self._control = None
-        self._desktop = None
         self._document = None
         self._presentation = None
         self._process = None
@@ -122,39 +128,35 @@ class LibreOfficeServer(object):
             '--minimized',
             '--nodefault',
             '--nofirststartwizard',
-            '--accept=pipe,name=openlp_pipe;urp;'
+            '--accept=socket,host=localhost,port=2002;urp;StarOffice.ServiceManager'
         ]
         self._process = Popen(uno_command)
 
-    def setup_desktop(self):
+    @property
+    def desktop(self):
         """
         Set up an UNO desktop instance
         """
-        if self.has_desktop():
-            return
         uno_instance = None
         context = uno.getComponentContext()
         resolver = context.ServiceManager.createInstanceWithContext('com.sun.star.bridge.UnoUrlResolver', context)
         loop = 0
         while uno_instance is None and loop < 3:
             try:
-                uno_instance = resolver.resolve('uno:pipe,name=openlp_pipe;urp;StarOffice.ComponentContext')
+                uno_instance = resolver.resolve('uno:socket,host=localhost,port=2002;urp;StarOffice.ComponentContext')
             except Exception as e:
                 log.warning('Unable to find running instance ')
                 loop += 1
         try:
-            self._manager = uno_instance.ServiceManager
+            manager = uno_instance.ServiceManager
             log.debug('get UNO Desktop Openoffice - createInstanceWithContext - Desktop')
-            self._desktop = self._manager.createInstanceWithContext('com.sun.star.frame.Desktop', uno_instance)
+            desktop = manager.createInstanceWithContext('com.sun.star.frame.Desktop', uno_instance)
+            if not desktop:
+                raise Exception('Failed to get UNO desktop')
+            return desktop
         except Exception as e:
             log.warning('Failed to get UNO desktop')
 
-    def has_desktop(self):
-        """
-        Say if we have a desktop object
-        """
-        return hasattr(self, '_desktop') and self._desktop is not None
-
     def shutdown(self):
         """
         Shut down the server
@@ -163,24 +165,23 @@ class LibreOfficeServer(object):
         if hasattr(self, '_docs'):
             while self._docs:
                 self._docs[0].close_presentation()
-        if self.has_desktop():
-            docs = self._desktop.getComponents()
-            count = 0
-            if docs.hasElements():
-                list_elements = docs.createEnumeration()
-                while list_elements.hasMoreElements():
-                    doc = list_elements.nextElement()
-                    if doc.getImplementationName() != 'com.sun.star.comp.framework.BackingComp':
-                        count += 1
-            if count > 0:
-                log.debug('LibreOffice not terminated as docs are still open')
-                can_kill = False
-            else:
-                try:
-                    self._desktop.terminate()
-                    log.debug('LibreOffice killed')
-                except:
-                    log.warning('Failed to terminate LibreOffice')
+        docs = self.desktop.getComponents()
+        count = 0
+        if docs.hasElements():
+            list_elements = docs.createEnumeration()
+            while list_elements.hasMoreElements():
+                doc = list_elements.nextElement()
+                if doc.getImplementationName() != 'com.sun.star.comp.framework.BackingComp':
+                    count += 1
+        if count > 0:
+            log.debug('LibreOffice not terminated as docs are still open')
+            can_kill = False
+        else:
+            try:
+                self.desktop.terminate()
+                log.debug('LibreOffice killed')
+            except:
+                log.warning('Failed to terminate LibreOffice')
         if getattr(self, '_process') and can_kill:
             self._process.kill()
 
@@ -191,8 +192,10 @@ class LibreOfficeServer(object):
         self._file_path = file_path
         url = uno.systemPathToFileUrl(file_path)
         properties = (self._create_property('Hidden', True),)
+        retries = 0
+        self._document = None
         try:
-            self._document = self._desktop.loadComponentFromURL(url, '_blank', 0, properties)
+            self._document = self.desktop.loadComponentFromURL(url, '_blank', 0, properties)
         except:
             log.warning('Failed to load presentation {url}'.format(url=url))
             return False

openlp/plugins/presentations/lib/maclocontroller.py

@@ -23,6 +23,7 @@
 import logging
 import os
 import time
+from pathlib import Path
 from subprocess import Popen
 
 from openlp.core.common import AppLocation, Registry, delete_file, is_macosx
@@ -65,11 +66,11 @@ class MacLOController(PresentationController):
         """
         Start a LibreOfficeServer
         """
-        libreoffice_python = '/Applications/LibreOffice.app/Contents/Resources/python'
-        libreoffice_server = os.path.join(AppLocation.get_directory(AppLocation.PluginsDir),
-                                          'presentations', 'lib', 'libreofficeserver.py')
-        if os.path.exists(libreoffice_python):
-            self.server_process = Popen([libreoffice_python, libreoffice_server])
+        libreoffice_python = Path('/Applications/LibreOffice.app/Contents/Resources/python')
+        libreoffice_server = AppLocation.get_directory(AppLocation.PluginsDir).joinpath('presentations', 'lib',
+                                                                                        'libreofficeserver.py')
+        if libreoffice_python.exists():
+            self.server_process = Popen([str(libreoffice_python), str(libreoffice_server)])
 
     @property
     def client(self):
@@ -124,9 +125,6 @@ class MacLODocument(PresentationDocument):
         Tell the LibreOfficeServer to start the presentation.
         """
         log.debug('Load Presentation LibreOffice')
-        self.client.setup_desktop()
-        if not self.client.has_desktop():
-            return False
         if not self.client.load_presentation(self.file_path, ScreenList().current['number'] + 1):
             return False
         self.create_thumbnails()