[kafka] Add kafka plugin

Adding a plugin to collect:

- Kafka logs and config files
- basic installation info for debugging purposes

Resolves: SET-96

Signed-off-by: Alejandro Santoyo <[email protected]>

sos/report/plugins/kafka.py

@@ -0,0 +1,69 @@
+# Copyright (C) 2024 Alejandro Santoyo <[email protected]>
+#
+# This file is part of the sos project: https://github.com/sosreport/sos
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions of
+# version 2 of the GNU General Public License.
+#
+# See the LICENSE file in the source distribution for further information.
+
+import os
+from sos.report.plugins import Plugin, UbuntuPlugin
+
+
+class Kafka(Plugin, UbuntuPlugin):
+    """
+    This plugin collects log and configuration files, and also basic
+    installation information (e.g., `snap info`) for Apache Kafka.
+    """
+
+    short_desc = 'Apache Kafka plugin'
+    plugin_name = 'kafka'
+    profiles = ('services',)
+    packages = ('charmed-kafka',)
+    services = ('kafka',)
+    is_snap = False
+
+    def _is_snap_installed(self):
+        kafka_pkg = self.policy.package_manager.pkg_by_name('charmed-kafka')
+        if kafka_pkg:
+            return kafka_pkg['pkg_manager'] == 'snap'
+        return False
+
+    def setup(self):
+        self.is_snap = self._is_snap_installed()
+        log_file_pattern = "*.log*" if self.get_option("all_logs") else "*.log"
+
+        if self.is_snap:
+            self.add_cmd_output('snap info charmed-kafka')
+
+            log_path = "/var/snap/charmed-kafka/common/var/log/kafka/"
+            config_path = "/var/snap/charmed-kafka/current/etc/kafka/"
+        else:
+            log_path = "/usr/local/kafka/logs/"
+            config_path = "/usr/local/kafka/config/"
+
+        self.add_copy_spec([
+            log_path + log_file_pattern,
+            config_path,
+        ])
+
+    def postproc(self):
+        protect_keys = ["password", "username",]
+        config_path = (
+            "/var/snap/charmed-kafka/current/etc/kafka/"
+            if self.is_snap
+            else "/usr/local/kafka/config/"
+        )
+
+        # get the absolute paths for all files in the config dir
+        # (considering nested directories) and run do_path_regex_sub()
+        # on each file to obfuscate the keys in protect_keys
+        regexp = fr"(^\s*({'|'.join(protect_keys)})\s*=\s*)(.*)"
+        for root, _, files in os.walk(config_path):
+            for file in files:
+                self.do_path_regex_sub(os.path.join(root, file),
+                                       regexp, r"\1*********")
+
+# vim: set et ts=4 sw=4 :