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"""Kytos utils configuration.""" |
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# This file is part of kytos-utils. |
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# |
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# Copyright (c) 2016 Kytos Team |
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# |
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# Authors: |
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# Beraldo Leal <beraldo AT ncc DOT unesp DOT br> |
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import logging |
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import os |
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from configparser import ConfigParser |
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log = logging.getLogger(__name__) |
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class KytosConfig(): |
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"""Kytos Configs. |
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Read the config file for kytos utils and/or request data for the user in |
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order to get the correct paths and links. |
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""" |
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def __init__(self, config_file='~/.kytosrc'): |
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"""Init method. |
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Receive the confi_file as argument. |
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""" |
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self.config_file = os.path.expanduser(config_file) |
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self.debug = False |
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if self.debug: |
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log.setLevel(logging.DEBUG) |
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# allow_no_value=True is used to keep the comments on the config file. |
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self.config = ConfigParser(allow_no_value=True) |
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# Parse the config file. If no config file was found, then create some |
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# default sections on the config variable. |
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self.config.read(self.config_file) |
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self.check_sections(self.config) |
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self.set_env_or_defaults() |
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if not os.path.exists(self.config_file): |
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log.warning("Config file %s not found.", self.config_file) |
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log.warning("Creating a new empty config file.") |
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with open(self.config_file, 'w') as output_file: |
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os.chmod(self.config_file, 0o0600) |
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self.config.write(output_file) |
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def log_configs(self): |
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"""Log the read configs if debug is enabled.""" |
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for sec in self.config.sections(): |
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log.debug(' %s: %s', sec, self.config.options(sec)) |
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def set_env_or_defaults(self): |
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"""Read some environment variables and set them on the config. |
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If no environment variable is found and the config section/key is |
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empty, then set some default values. |
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""" |
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napps_api = os.environ.get('NAPPS_API_URI') |
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napps_repo = os.environ.get('NAPPS_REPO_URI') |
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user = os.environ.get('NAPPS_USER') |
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token = os.environ.get('NAPPS_TOKEN') |
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napps_path = os.environ.get('NAPPS_PATH') |
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self.config.set('global', 'debug', str(self.debug)) |
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if user is not None: |
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self.config.set('auth', 'user', user) |
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if token is not None: |
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self.config.set('auth', 'token', token) |
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if napps_api is not None: |
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self.config.set('napps', 'api', napps_api) |
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elif not self.config.has_option('napps', 'api'): |
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self.config.set('napps', 'api', 'https://napps.kytos.io/api/') |
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if napps_repo is not None: |
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self.config.set('napps', 'repo', napps_repo) |
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elif not self.config.has_option('napps', 'repo'): |
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self.config.set('napps', 'repo', 'https://napps.kytos.io/repo/') |
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self._set_napps_path(napps_path) |
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def _set_napps_path(self, napps_path): |
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"""Set paths if NAPPS_PATH is given or if not found in config.""" |
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if napps_path or not self.config.has_option('napps', 'enabled_path'): |
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if not napps_path: # default paths |
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base = os.environ.get('VIRTUAL_ENV') or '/' |
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napps_path = os.path.join(base, 'var', 'lib', 'kytos', 'napps') |
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self.config.set('napps', 'enabled_path', napps_path) |
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self.config.set('napps', 'installed_path', |
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os.path.join(napps_path, '.installed')) |
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@staticmethod |
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def check_sections(config): |
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"""Create a empty config file.""" |
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default_sections = ['global', 'auth', 'napps'] |
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for section in default_sections: |
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if not config.has_section(section): |
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config.add_section(section) |
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def save_token(self, user, token): |
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"""Save the token on the config file.""" |
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self.config.set('auth', 'user', user) |
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self.config.set('auth', 'token', token) |
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# allow_no_value=True is used to keep the comments on the config file. |
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new_config = ConfigParser(allow_no_value=True) |
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# Parse the config file. If no config file was found, then create some |
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# default sections on the config variable. |
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new_config.read(self.config_file) |
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self.check_sections(new_config) |
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new_config.set('auth', 'user', user) |
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new_config.set('auth', 'token', token) |
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filename = os.path.expanduser(self.config_file) |
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with open(filename, 'w') as out_file: |
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os.chmod(filename, 0o0600) |
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new_config.write(out_file) |
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def clear_token(self): |
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"""Clear Token information on config file.""" |
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# allow_no_value=True is used to keep the comments on the config file. |
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new_config = ConfigParser(allow_no_value=True) |
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# Parse the config file. If no config file was found, then create some |
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# default sections on the config variable. |
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new_config.read(self.config_file) |
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self.check_sections(new_config) |
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new_config.remove_option('auth', 'user') |
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new_config.remove_option('auth', 'token') |
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filename = os.path.expanduser(self.config_file) |
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with open(filename, 'w') as out_file: |
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os.chmod(filename, 0o0600) |
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new_config.write(out_file) |
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cemsbr /
kytos-utils
