Error Analyzer - Print error msg

Explanation

This will enhance the capability of sssctl analyze tool. The new tool sssctl analyze error list will print if there is any error in sssd_domain.log.

Removing unused functions and libraries.

Resolves: #6679

src/tools/analyzer/sss_analyze.py

@@ -1,6 +1,7 @@
 import argparse
 
 from sssd.modules import request
+from sssd.modules import error
 from sssd.parser import SubparsersAction
 
 
@@ -55,9 +56,11 @@ def load_modules(self, parser, parser_grp):
         """
         # Currently only the 'request' module exists
         req = request.RequestAnalyzer()
+        err = error.ErrorAnalyzer()
         cli = Analyzer()
 
         req.setup_args(parser_grp, cli)
+        err.setup_args(parser_grp, cli)
 
     def setup_args(self):
         """

src/tools/analyzer/util.py

@@ -0,0 +1,88 @@
+import re
+import logging
+
+from sssd.source_files import Files
+from sssd.source_journald import Journald
+from sssd.parser import SubparsersAction
+from sssd.parser import Option
+
+logger = logging.getLogger()
+
+
+class Utils:
+    """
+    A request analyzer module, handles request tracking logic
+    and analysis. Parses input generated from a source Reader.
+    """
+
+    def print_module_help(self, args):
+        """
+        Print the module parser help output
+
+        Args:
+            args (Namespace): argparse parsed arguments
+        """
+        self.module_parser.print_help()
+
+    def setup_args(self, parser_grp, cli):
+        """
+        Setup module parser, subcommands, and options
+
+        Args:
+            parser_grp (argparse.Action): Parser group to nest
+               module and subcommands under
+        """
+        desc = "Analyze request tracking module"
+        self.module_parser = parser_grp.add_parser('request',
+                                                   description=desc,
+                                                   help='Request tracking')
+
+        subparser = self.module_parser.add_subparsers(title=None,
+                                                      dest='subparser',
+                                                      action=SubparsersAction,
+                                                      metavar='COMMANDS')
+
+        subcmd_grp = subparser.add_parser_group('Operation Modes')
+        cli.add_subcommand(subcmd_grp, 'list', 'List recent requests',
+                           self.list_requests, self.list_opts)
+        cli.add_subcommand(subcmd_grp, 'show', 'Track individual request ID',
+                           self.track_request, self.show_opts)
+
+        self.module_parser.set_defaults(func=self.print_module_help)
+
+        return self.module_parser
+
+    def load(self, args):
+        """
+        Load the appropriate source reader.
+
+        Args:
+            args (Namespace): argparse parsed arguments
+
+        Returns:
+            Instantiated source object
+        """
+        if args.source == "journald":
+            source = Journald()
+        else:
+            source = Files(args.logdir)
+        return source
+
+    def matched_line(self, source, patterns):
+        """
+        Yield lines which match any number of patterns (OR) in
+        provided patterns list.
+
+        Args:
+            source (Reader): source Reader object
+        Yields:
+            lines matching the provided pattern(s)
+        """
+        for line in source:
+            for pattern in patterns:
+                re_obj = re.compile(pattern)
+                if re_obj.search(line):
+                    if line.startswith('   *  '):
+                        continue
+                    yield line
+