1) Fixed an issue where the process watcher dialog throws an error for

the database server which is already removed. Fixes #5985
2) Fixed cognitive complexity reported by SonarQube.

docs/en_US/release_notes.rst

@@ -11,6 +11,7 @@ notes for it.
 .. toctree::
    :maxdepth: 1
 
+   release_notes_4_29
    release_notes_4_28
    release_notes_4_27
    release_notes_4_26

docs/en_US/release_notes_4_29.rst

@@ -0,0 +1,20 @@
+************
+Version 4.29
+************
+
+Release date: 2020-12-10
+
+This release contains a number of bug fixes and new features since the release of pgAdmin4 4.28.
+
+New features
+************
+
+
+Housekeeping
+************
+
+
+Bug fixes
+*********
+
+| `Issue #5985 <https://redmine.postgresql.org/issues/5985>`_ -  Fixed an issue where the process watcher dialog throws an error for the database server which is already removed.

web/pgadmin/browser/server_groups/servers/utils.py

@@ -262,3 +262,21 @@ def remove_saved_passwords(user_id):
     except Exception as _:
         db.session.rollback()
         raise
+
+
+def does_server_exists(sid, user_id):
+
+    """
+    This function will return True if server is existing for a user
+    :param sid: server id
+    :param user_id: user id
+    :return: Boolean
+    """
+    # **kwargs parameter can be added to function to filter with more
+    # parameters.
+    try:
+        return True if Server.query.filter_by(
+            id=sid, user_id=user_id
+        ).first() is not None else False
+    except Exception:
+        return False

web/pgadmin/misc/bgprocess/processes.py

@@ -23,6 +23,7 @@ import logging
 
 from pgadmin.utils import u_encode, file_quote, fs_encoding, \
     get_complete_file_path, get_storage_directory, IS_WIN
+from pgadmin.browser.server_groups.servers.utils import does_server_exists
 
 import pytz
 from dateutil import parser
@@ -68,9 +69,9 @@ class IProcessDesc(object, metaclass=ABCMeta):
             try:
                 # check if file name is encoded with UTF-8
                 file = self.bfile.decode('utf-8')
-            except Exception as e:
+            except Exception:
-                str(e)
                 # do nothing if bfile is not encoded.
+                pass
 
             path = get_complete_file_path(file)
             path = file if path is None else path
@@ -87,14 +88,7 @@ class IProcessDesc(object, metaclass=ABCMeta):
             else:
                 last_dir = file
 
-            if IS_WIN:
+            last_dir = replace_path_for_win(last_dir)
-                if '\\' in last_dir:
-                    if len(last_dir) == 1:
-                        last_dir = last_dir.replace('\\', '\\\\')
-                    else:
-                        last_dir = last_dir.replace('\\', '/')
-                else:
-                    last_dir = last_dir.replace('\\', '/')
 
             return None if hasattr(self, 'is_import') and self.is_import \
                 else last_dir
@@ -102,6 +96,16 @@ class IProcessDesc(object, metaclass=ABCMeta):
         return None
 
 
+def replace_path_for_win(last_dir=None):
+    if IS_WIN:
+        if '\\' in last_dir and len(last_dir) == 1:
+            last_dir = last_dir.replace('\\', '\\\\')
+        else:
+            last_dir = last_dir.replace('\\', '/')
+
+    return last_dir
+
+
 class BatchProcess(object):
     def __init__(self, **kwargs):
 
@@ -625,6 +629,9 @@ class BatchProcess(object):
             ):
                 continue
 
+            if BatchProcess._operate_orphan_process(p):
+                continue
+
             execution_time = None
 
             stime = parser.parse(p.start_time)
@@ -654,6 +661,29 @@ class BatchProcess(object):
 
         return res
 
+    @staticmethod
+    def _operate_orphan_process(p):
+
+        if p and p.desc:
+            desc = loads(p.desc)
+            if does_server_exists(desc.sid, current_user.id) is False:
+                current_app.logger.warning(
+                    _("Server with id '{0}' is either removed or does "
+                      "not exists for the background process "
+                      "'{1}'").format(desc.sid, p.pid)
+                )
+                try:
+                    BatchProcess.acknowledge(p.pid)
+                except LookupError as lerr:
+                    current_app.logger.warning(
+                        _("Status for the background process '{0}' could "
+                          "not be loaded.").format(p.pid)
+                    )
+                    current_app.logger.exception(lerr)
+                return True
+
+        return False
+
     @staticmethod
     def total_seconds(dt):
         return round(dt.total_seconds(), 2)

web/pgadmin/tools/backup/__init__.py

@@ -141,11 +141,6 @@ class BackupMessage(IProcessDesc):
             # It should never reach here.
             return _("Unknown Backup")
 
-    # @property
-    # def current_storage_dir(self):
-    #     return self.bfile if os.path.isdir(self.bfile) \
-    #         else os.path.dirname(self.bfile)
-
     @property
     def message(self):
         name, host, port = self.get_server_details()

web/pgadmin/tools/backup/tests/test_batch_process.py

@@ -199,11 +199,18 @@ class BatchProcessTest(BaseTestGenerator):
 
         self.assertTrue(popen_mock.called)
 
+    @patch('os.path.realpath')
+    @patch('pgadmin.misc.bgprocess.processes.get_storage_directory')
+    @patch('pgadmin.misc.bgprocess.processes.get_complete_file_path')
     @patch('pgadmin.misc.bgprocess.processes.Process')
     @patch('pgadmin.misc.bgprocess.processes.BatchProcess.'
            'update_process_info')
-    def _check_list(self, p, backup_obj, update_process_info_mock,
+    @patch('pgadmin.misc.bgprocess.processes.BatchProcess.'
-                    process_mock):
+           '_operate_orphan_process')
+    def _check_list(self, p, backup_obj, _operate_orphan_process_mock,
+                    update_process_info_mock, process_mock,
+                    get_complete_file_path_mock, get_storage_directory_mock,
+                    realpath_mock):
         class TestMockProcess():
             def __init__(self, desc, args, cmd):
                 self.pid = 1
@@ -222,6 +229,10 @@ class BatchProcessTest(BaseTestGenerator):
                             self.class_params['cmd'])]
 
         update_process_info_mock.return_value = [True, True]
+        get_complete_file_path_mock.return_value = self.class_params['bfile']
+        realpath_mock.return_value = self.class_params['bfile']
+        get_storage_directory_mock.return_value = '//'
+        _operate_orphan_process_mock.return_value = False
 
         ret_value = p.list()
         self.assertEqual(1, len(ret_value))

web/pgadmin/tools/import_export/tests/test_batch_process.py

@@ -212,9 +212,11 @@ class BatchProcessTest(BaseTestGenerator):
     @patch('pgadmin.misc.bgprocess.processes.Process')
     @patch('pgadmin.misc.bgprocess.processes.BatchProcess.'
            'update_process_info')
-    def _check_list(self, p, import_export_obj, update_process_info_mock,
+    @patch('pgadmin.misc.bgprocess.processes.BatchProcess.'
-                    process_mock,
+           '_operate_orphan_process')
-                    get_storage_directory_mock, get_complete_file_path_mock,
+    def _check_list(self, p, import_export_obj, _operate_orphan_process_mock,
+                    update_process_info_mock, process_mock,
+                    get_complete_file_path_mock, get_storage_directory_mock,
                     realpath_mock):
         class TestMockProcess():
             def __init__(self, desc, args, cmd):
@@ -237,6 +239,7 @@ class BatchProcessTest(BaseTestGenerator):
         get_complete_file_path_mock.return_value = self.params['filename']
         realpath_mock.return_value = self.params['filename']
         get_storage_directory_mock.return_value = '//'
+        _operate_orphan_process_mock.return_value = False
 
         ret_value = p.list()
         self.assertEqual(1, len(ret_value))

web/pgadmin/tools/storage_manager/static/js/storage_manager.js

@@ -65,7 +65,7 @@ define([
       var params = {
         supported_types: ['sql', 'csv', '*'],
         dialog_type: 'storage_dialog',
-        dialog_title: 'Storage Manager...',
+        dialog_title: 'Storage Manager',
         btn_primary: undefined,
       };