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authorViacheslav Hletenko <v.gletenko@vyos.io>2022-06-01 16:42:53 +0000
committerViacheslav Hletenko <v.gletenko@vyos.io>2022-06-02 08:08:49 +0000
commitb8671b56c153055a2906af14f63b5818b189d808 (patch)
tree416246b95f828be5404f1ed3ebbacf409c5c42ba /src/conf_mode/service_sla.py
parentc4d824d57d696bcf0e2a1e8e0fd87078e6eaadd3 (diff)
downloadvyos-1x-b8671b56c153055a2906af14f63b5818b189d808.tar.gz
vyos-1x-b8671b56c153055a2906af14f63b5818b189d808.zip
sla: T4222: Add OWAMP and TWAMP for service sla
OWAMP is a command line client application and a policy daemon used to determine one way latencies between hosts. OWAMP session control uses traditional client-server communication between a control-client and a server, TWAMP (two-way active measurement protocol) Add configuration and operation modes set service sla owamp-server set service sla twamp-server run force owping 192.0.2.120 run force twping 192.0.2.190
Diffstat (limited to 'src/conf_mode/service_sla.py')
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diff --git a/src/conf_mode/service_sla.py b/src/conf_mode/service_sla.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2022 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/>.
+
+import os
+
+from sys import exit
+
+from vyos.config import Config
+from vyos.configdict import dict_merge
+from vyos.template import render
+from vyos.util import call
+from vyos.xml import defaults
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+
+owamp_config_dir = '/etc/owamp-server'
+owamp_config_file = f'{owamp_config_dir}/owamp-server.conf'
+systemd_override_owamp = r'/etc/systemd/system/owamp-server.d/20-override.conf'
+
+twamp_config_dir = '/etc/twamp-server'
+twamp_config_file = f'{twamp_config_dir}/twamp-server.conf'
+systemd_override_twamp = r'/etc/systemd/system/twamp-server.d/20-override.conf'
+
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['service', 'sla']
+ if not conf.exists(base):
+ return None
+
+ sla = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
+ # We have gathered the dict representation of the CLI, but there are default
+ # options which we need to update into the dictionary retrived.
+ default_values = defaults(base)
+ sla = dict_merge(default_values, sla)
+
+ # Ignore default XML values if config doesn't exists
+ # Delete key from dict
+ if not conf.exists(base + ['owamp-server']):
+ del sla['owamp_server']
+ if not conf.exists(base + ['twamp-server']):
+ del sla['twamp_server']
+
+ return sla
+
+def verify(sla):
+ if not sla:
+ return None
+
+def generate(sla):
+ if not sla:
+ return None
+
+ render(owamp_config_file, 'sla/owamp-server.conf.j2', sla)
+ render(systemd_override_owamp, 'sla/owamp-override.conf.j2', sla)
+
+ render(twamp_config_file, 'sla/twamp-server.conf.j2', sla)
+ render(systemd_override_twamp, 'sla/twamp-override.conf.j2', sla)
+
+ return None
+
+def apply(sla):
+ owamp_service = 'owamp-server.service'
+ twamp_service = 'twamp-server.service'
+
+ call('systemctl daemon-reload')
+
+ if not sla or 'owamp_server' not in sla:
+ call(f'systemctl stop {owamp_service}')
+
+ if os.path.exists(owamp_config_file):
+ os.unlink(owamp_config_file)
+
+ if not sla or 'twamp_server' not in sla:
+ call(f'systemctl stop {twamp_service}')
+ if os.path.exists(twamp_config_file):
+ os.unlink(twamp_config_file)
+
+ if sla and 'owamp_server' in sla:
+ call(f'systemctl reload-or-restart {owamp_service}')
+
+ if sla and 'twamp_server' in sla:
+ call(f'systemctl reload-or-restart {twamp_service}')
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)