Traffic analyzer standalone entry (#848)

Author: pomodorox

daq/acl_state_collector.py

@@ -41,6 +41,11 @@ def _get_port_rule_counts(self, switch, port, acl_config, rule_samples):
                     acl_config._id, rule_config.get('description'))
                 continue
 
+            rule_description = rule_config.get('description')
+            if not rule_description:
+                LOGGER.error('Rule with cookie %s does not have a description', cookie_num)
+                continue
+
             has_sample = False
             for sample in rule_samples:
                 if str(sample.labels.get('cookie')) != str(cookie_num):
@@ -49,14 +54,15 @@ def _get_port_rule_counts(self, switch, port, acl_config, rule_samples):
                     continue
                 if int(sample.labels.get('in_port')) != port:
                     continue
-                rule_map = rules_map.setdefault(rule_config['description'], {})
+
+                rule_map = rules_map.setdefault(rule_description, {})
                 rule_map['packet_count'] = int(sample.value)
                 has_sample = True
                 break
 
             if not has_sample:
                 error = (f'No ACL metric sample available for switch, port, ACL, rule: '
-                         f'{switch}, {port}, {acl_config._id}, {rule_config["description"]} '
+                         f'{switch}, {port}, {acl_config._id}, {rule_description} '
                          f'(cookie={cookie_num})')
                 errors.append(error)
                 LOGGER.error(error)

daq/entry.py

@@ -100,13 +100,6 @@ def _stripped_alt_logger(self, level, msg, *args, **kwargs):
         ALT_LOG._log(level, stripped, *args, **kwargs)
 
 
-def _write_pid_file():
-    pid = os.getpid()
-    LOGGER.info('pid is %d', pid)
-    with open(_PID_FILE, 'w') as pid_file:
-        pid_file.write(str(pid))
-
-
 def _execute():
     daq = DAQ(sys.argv)
     configurator.print_config(daq.config)
@@ -120,7 +113,7 @@ def _execute():
     if not daq.validate_config():
         return 1
 
-    _write_pid_file()
+    utils.write_pid_file(_PID_FILE, LOGGER)
 
     signal.signal(signal.SIGINT, signal.default_int_handler)
     signal.signal(signal.SIGTERM, signal.default_int_handler)