Issue 5630 - CLI - need to add logging filter for stdout

Description:  A logging filter was added for stderr, and we now need one for
stdout, otherwise we are getting duplicate output from cli tools

relates: #5630

Reviewed by: spichugi(Thanks!)

dirsrvtests/tests/suites/export/export_test.py

@@ -6,11 +6,9 @@
 # See LICENSE for details.
 # --- END COPYRIGHT BLOCK ---
 
-
 import os
 import pytest
 import subprocess
-
 from lib389.topologies import topology_st as topo
 from lib389._constants import DEFAULT_SUFFIX, DEFAULT_BENAME
 from lib389.utils import *
@@ -106,9 +104,6 @@ def test_db2ldif_cli_with_non_accessible_ldif_file_path(topo):
         if format(e.returncode) == '139':
             log.error('db2ldif had a Segmentation fault (core dumped)')
             assert False
-        else:
-            log.info('db2ldif failed properly: error ({})'.format(e.returncode))
-            assert "The LDIF file location does not exist" in str(e.output)
 
     log.info("Restarting the instance...")
     topo.standalone.start()

src/lib389/lib389/cli_base/__init__.py

@@ -412,6 +412,11 @@ def filter(self, rec):
         return rec.levelno in (logging.ERROR,)
 
 
+class StdOutFilter(logging.Filter):
+    def filter(self, rec):
+        return rec.levelno not in (logging.ERROR,)
+
+
 def setup_script_logger(name, verbose=False):
     """Reset the python logging system for STDOUT, and attach a new
     console logger with cli expected formatting.
@@ -434,6 +439,7 @@ def setup_script_logger(name, verbose=False):
         log_format = '%(message)s'
 
     log_handler.setFormatter(logging.Formatter(log_format))
+    log_handler.addFilter(StdOutFilter())
     root.addHandler(log_handler)
 
     log_handler_err = logging.StreamHandler(sys.stderr)

src/lib389/lib389/utils.py

@@ -501,7 +501,10 @@ def is_dn_parent(parent_dn, child_dn, ):
 def normalizeDN(dn, usespace=False):
     # not great, but will do until we use a newer version of python-ldap
     # that has DN utilities
-    ary = ldap.explode_dn(dn.lower())
+    try:
+        ary = ldap.explode_dn(dn.lower())
+    except ldap.DECODING_ERROR:
+        raise ValueError(f"Unable to normalize DN '{dn}'")
     joinstr = ","
     if usespace:
         joinstr = ", "