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# Copyright 2022-2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library.  If not, see <http://www.gnu.org/licenses/>.

# Migrate system syslog global archive to system logs logrotate messages

from vyos.configtree import ConfigTree

base = ['system', 'syslog', 'global', 'archive']

def migrate(config: ConfigTree) -> None:
    if not config.exists(base):
        return

    if config.exists(base + ['file']):
        tmp = config.return_value(base + ['file'])
        config.set(['system', 'logs', 'logrotate', 'messages', 'rotate'], value=tmp)

    if config.exists(base + ['size']):
        tmp = config.return_value(base + ['size'])
        tmp = max(round(int(tmp) / 1024), 1) # kb -> mb
        config.set(['system', 'logs', 'logrotate', 'messages', 'max-size'], value=tmp)

    config.delete(base)