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| -rw-r--r-- | python/vyos/component_versions.py | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/python/vyos/component_versions.py b/python/vyos/component_versions.py new file mode 100644 index 000000000..ec54a1576 --- /dev/null +++ b/python/vyos/component_versions.py @@ -0,0 +1,57 @@ +# Copyright 2017 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/>. + +""" +The version data looks like: + +/* Warning: Do not remove the following line. */ +/* === vyatta-config-version: +"cluster@1:config-management@1:conntrack-sync@1:conntrack@1:dhcp-relay@1:dhcp-server@4:firewall@5:ipsec@4:nat@4:qos@1:quagga@2:system@8:vrrp@1:wanloadbalance@3:webgui@1:webproxy@1:zone-policy@1" +=== */ +/* Release version: 1.2.0-rolling+201806131737 */ +""" + +import re + +def get_component_version(string_line): + """ + Get component version dictionary from string + return empty dictionary if string contains no config information + or raise error if component version string malformed + """ + return_value = {} + if re.match(r'/\* === vyatta-config-version:.+=== \*/$', string_line): + + if not re.match(r'/\* === vyatta-config-version:\s+"([\w,-]+@\d+:)+([\w,-]+@\d+)"\s+=== \*/$', string_line): + raise ValueError("malformed configuration string: " + str(string_line)) + + for pair in re.findall(r'([\w,-]+)@(\d+)', string_line): + if pair[0] in return_value.keys(): + raise ValueError("duplicate unit name: \"" + str(pair[0]) + "\" in string: \"" + string_line + "\"") + return_value[pair[0]] = int(pair[1]) + + return return_value + + +def get_component_versions_from_file(config_file_name='/opt/vyatta/etc/config/config.boot'): + """ + Get component version dictionary parsing config file line by line + """ + f = open(config_file_name, 'r') + for line_in_config in f: + component_version = return_version(line_in_config) + if component_version: + return component_version + raise ValueError("no config string in file:", config_file_name) |