Add parsing backup_id in run app.py (#126)

Author: demonolock

Diff for: testgres/plugins/pg_probackup2/pg_probackup2/app.py

@@ -124,10 +124,7 @@ def run(self, command, gdb=False, old_binary=False, return_id=True, env=None,
             self.execution_time = end_time - start_time
 
             if command[0] == 'backup' and return_id:
-                # return backup ID
-                for line in self.test_class.output.splitlines():
-                    if 'INFO: Backup' and 'completed' in line:
-                        result = line.split()[2]
+                result = self.get_backup_id()
             else:
                 result = self.test_class.output
             if expect_error is True:
@@ -144,6 +141,19 @@ def run(self, command, gdb=False, old_binary=False, return_id=True, env=None,
             else:
                 raise ProbackupException(self.test_class.output, self.test_class.cmd)
 
+    def get_backup_id(self):
+        if init_params.major_version > 2:
+            pattern = re.compile(r"Backup (.*) completed successfully.")
+            for line in self.test_class.output.splitlines():
+                match = pattern.search(line)
+                if match:
+                    return match.group(1)
+        else:
+            for line in self.test_class.output.splitlines():
+                if 'INFO: Backup' and 'completed' in line:
+                    return line.split()[2]
+        return None
+
     def init(self, options=None, old_binary=False, skip_log_directory=False, expect_error=False, use_backup_dir=True):
         if options is None:
             options = []