logs: T3774: Added CLI options to control atop logs rotation

Added CLI options to generate logrotate configuration file for atop logs

1 files changed, 76 insertions, 0 deletions

diff --git a/src/conf_mode/system-logs.py b/src/conf_mode/system-logs.py
new file mode 100755
index 000000000..8eb95e543
--- /dev/null
+++ b/src/conf_mode/system-logs.py
@@ -0,0 +1,76 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from sys import exit
+
+from vyos import ConfigError
+from vyos import airbag
+from vyos.config import Config
+from vyos.logger import syslog
+from vyos.template import render_to_string
+from vyos.util import read_file, write_file
+airbag.enable()
+
+# path to logrotate config for atop
+logrotate_atop_file = '/etc/logrotate.d/vyos-atop'
+
+
+def get_config(config=None):
+    if config:
+        conf = config
+    else:
+        conf = Config()
+
+    base = ['system', 'logs']
+    logs_config = conf.get_config_dict(base)
+
+    return logs_config
+
+
+def verify(logs_config):
+    # Nothing to verify here
+    pass
+
+
+def generate(logs_config):
+    # get configuration for logrotate atop
+    logrotate_atop = logs_config.get('logs', {}).get('logrotate',
+                                                     {}).get('atop', {})
+    # read current config file for atop
+    logrotate_atop_current = read_file(logrotate_atop_file)
+    # generate new config file for atop
+    logrotate_atop_new = render_to_string('logs/logrotate/vyos-atop.tmpl',
+                                          logrotate_atop)
+    # update configuration files if this is necessary
+    if logrotate_atop_new != logrotate_atop_current:
+        syslog.debug('Adding logrotate config for atop')
+        write_file(logrotate_atop_file, logrotate_atop_new)
+
+
+def apply(logs_config):
+    # No further actions needed
+    pass
+
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        exit(1)