root / kamaki / cli / config.py @ 35d47a6c
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# Copyright 2011-2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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import os |
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from logging import getLogger |
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from collections import defaultdict |
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from ConfigParser import RawConfigParser, NoOptionError, NoSectionError, Error |
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from re import match |
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from kamaki.cli.errors import CLISyntaxError |
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from kamaki import __version__ |
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try:
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from collections import OrderedDict |
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except ImportError: |
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from kamaki.clients.utils.ordereddict import OrderedDict |
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class InvalidCloudNameError(Error): |
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"""A valid cloud name is accepted by this regex: ([@#$:-\w]+)"""
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log = getLogger(__name__) |
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# Path to the file that stores the configuration
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CONFIG_PATH = os.path.expanduser('~/.kamakirc')
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HISTORY_PATH = os.path.expanduser('~/.kamaki.history')
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CLOUD_PREFIX = 'cloud'
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# Name of a shell variable to bypass the CONFIG_PATH value
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CONFIG_ENV = 'KAMAKI_CONFIG'
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version = ''
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for c in '%s' % __version__: |
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if c not in '0.123456789': |
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break
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version += c |
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HEADER = '# Kamaki configuration file v%s\n' % version
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DEFAULTS = { |
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'global': {
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'default_cloud': '', |
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'colors': 'off', |
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'log_file': os.path.expanduser('~/.kamaki.log'), |
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'log_token': 'off', |
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'log_data': 'off', |
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'max_threads': 7, |
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'history_file': HISTORY_PATH,
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'user_cli': 'astakos', |
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'file_cli': 'pithos', |
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'server_cli': 'cyclades', |
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'flavor_cli': 'cyclades', |
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'network_cli': 'cyclades', |
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'image_cli': 'image', |
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'config_cli': 'config', |
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'history_cli': 'history' |
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# Optional command specs:
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# 'livetest_cli': 'livetest',
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# 'astakos_cli': 'snf-astakos'
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}, |
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CLOUD_PREFIX: |
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{ |
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#'default': {
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# 'url': '',
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# 'token': ''
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# 'pithos_type': 'object-store',
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# 'pithos_version': 'v1',
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# 'cyclades_type': 'compute',
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# 'cyclades_version': 'v2.0',
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# 'plankton_type': 'image',
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# 'plankton_version': '',
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# 'astakos_type': 'identity',
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# 'astakos_version': 'v2.0'
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#}
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} |
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} |
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try:
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import astakosclient |
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DEFAULTS['global'].update(dict(astakos_cli='snf-astakos')) |
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except ImportError: |
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pass
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class Config(RawConfigParser): |
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def __init__(self, path=None, with_defaults=True): |
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RawConfigParser.__init__(self, dict_type=OrderedDict)
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self.path = path or os.environ.get(CONFIG_ENV, CONFIG_PATH) |
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self._overrides = defaultdict(dict) |
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if with_defaults:
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self._load_defaults()
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self.read(self.path) |
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for section in self.sections(): |
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r = self._cloud_name(section)
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if r:
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for k, v in self.items(section): |
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self.set_cloud(r, k, v)
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self.remove_section(section)
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@staticmethod
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def _cloud_name(full_section_name): |
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if not full_section_name.startswith(CLOUD_PREFIX + ' '): |
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return None |
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matcher = match(CLOUD_PREFIX + ' "([@#$:\-\w]+)"', full_section_name)
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if matcher:
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return matcher.groups()[0] |
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else:
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icn = full_section_name[len(CLOUD_PREFIX) + 1:] |
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raise InvalidCloudNameError('Invalid Cloud Name %s' % icn) |
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def rescue_old_file(self): |
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lost_terms = [] |
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global_terms = DEFAULTS['global'].keys()
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translations = dict(
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config=dict(serv='', cmd='config'), |
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history=dict(serv='', cmd='history'), |
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pithos=dict(serv='pithos', cmd='file'), |
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file=dict(serv='pithos', cmd='file'), |
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store=dict(serv='pithos', cmd='file'), |
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storage=dict(serv='pithos', cmd='file'), |
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image=dict(serv='plankton', cmd='image'), |
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plankton=dict(serv='plankton', cmd='image'), |
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compute=dict(serv='compute', cmd=''), |
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cyclades=dict(serv='compute', cmd='server'), |
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server=dict(serv='compute', cmd='server'), |
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flavor=dict(serv='compute', cmd='flavor'), |
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network=dict(serv='compute', cmd='network'), |
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astakos=dict(serv='astakos', cmd='user'), |
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user=dict(serv='astakos', cmd='user'), |
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) |
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self.set('global', 'default_' + CLOUD_PREFIX, 'default') |
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for s in self.sections(): |
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if s in ('global'): |
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# global.url, global.token -->
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# cloud.default.url, cloud.default.token
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for term in set(self.keys(s)).difference(global_terms): |
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if term not in ('url', 'token'): |
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lost_terms.append('%s.%s = %s' % (
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s, term, self.get(s, term)))
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self.remove_option(s, term)
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continue
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gval = self.get(s, term)
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try:
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cval = self.get_cloud('default', term) |
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except KeyError: |
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cval = ''
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if gval and cval and ( |
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gval.lower().strip('/') != cval.lower().strip('/')): |
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raise CLISyntaxError(
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'Conflicting values for default %s' % term,
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importance=2, details=[
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' global.%s: %s' % (term, gval),
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' %s.default.%s: %s' % (
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CLOUD_PREFIX, term, cval), |
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'Please remove one of them manually:',
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' /config delete global.%s' % term,
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' or'
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' /config delete %s.default.%s' % (
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CLOUD_PREFIX, term), |
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'and try again'])
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elif gval:
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print('... rescue %s.%s => %s.default.%s' % (
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s, term, CLOUD_PREFIX, term)) |
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self.set_cloud('default', term, gval) |
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self.remove_option(s, term)
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# translation for <service> or <command> settings
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# <service> or <command group> settings --> translation --> global
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elif s in translations: |
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if s in ('history',): |
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k = 'file'
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v = self.get(s, k)
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if v:
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print('... rescue %s.%s => global.%s_%s' % (
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s, k, s, k)) |
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self.set('global', '%s_%s' % (s, k), v) |
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self.remove_option(s, k)
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trn = translations[s] |
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for k, v in self.items(s, False): |
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if v and k in ('cli',): |
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print('... rescue %s.%s => global.%s_cli' % (
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s, k, trn['cmd']))
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self.set('global', '%s_cli' % trn['cmd'], v) |
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elif k in ('container',) and trn['serv'] in ('pithos',): |
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print('... rescue %s.%s => %s.default.pithos_%s' % (
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s, k, CLOUD_PREFIX, k)) |
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self.set_cloud('default', 'pithos_%s' % k, v) |
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else:
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lost_terms.append('%s.%s = %s' % (s, k, v))
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self.remove_section(s)
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# self.pretty_print()
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return lost_terms
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def pretty_print(self): |
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for s in self.sections(): |
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print s
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for k, v in self.items(s): |
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if isinstance(v, dict): |
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print '\t', k, '=> {' |
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for ki, vi in v.items(): |
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print '\t\t', ki, '=>', vi |
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print('\t}')
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else:
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print '\t', k, '=>', v |
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def guess_version(self): |
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"""
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:returns: (float) version of the config file or 0.0 if unrecognized
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"""
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checker = Config(self.path, with_defaults=False) |
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sections = checker.sections() |
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log.warning('Config file heuristic 1: old global section ?')
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if 'global' in sections: |
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if checker.get('global', 'url') or checker.get('global', 'token'): |
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log.warning('..... config file has an old global section')
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return 0.8 |
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log.warning('........ nope')
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log.warning('Config file heuristic 2: Any cloud sections ?')
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if CLOUD_PREFIX in sections: |
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for r in self.keys(CLOUD_PREFIX): |
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log.warning('... found cloud "%s"' % r)
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return 0.9 |
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log.warning('........ nope')
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log.warning('All heuristics failed, cannot decide')
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return 0.9 |
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def get_cloud(self, cloud, option): |
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"""
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:param cloud: (str) cloud alias
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:param option: (str) option in cloud section
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:returns: (str) the value assigned on this option
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:raises KeyError: if cloud or cloud's option does not exist
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"""
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r = self.get(CLOUD_PREFIX, cloud)
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if not r: |
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raise KeyError('Cloud "%s" does not exist' % cloud) |
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return r[option]
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def get_global(self, option): |
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return self.get('global', option) |
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def set_cloud(self, cloud, option, value): |
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try:
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d = self.get(CLOUD_PREFIX, cloud) or dict() |
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except KeyError: |
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d = dict()
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d[option] = value |
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self.set(CLOUD_PREFIX, cloud, d)
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def set_global(self, option, value): |
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self.set('global', option, value) |
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def _load_defaults(self): |
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for section, options in DEFAULTS.items(): |
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for option, val in options.items(): |
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self.set(section, option, val)
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def _get_dict(self, section, include_defaults=True): |
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try:
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d = dict(DEFAULTS[section]) if include_defaults else {} |
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except KeyError: |
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d = {} |
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try:
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d.update(RawConfigParser.items(self, section))
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except NoSectionError:
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pass
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return d
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def reload(self): |
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self = self.__init__(self.path) |
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def get(self, section, option): |
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"""
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:param section: (str) HINT: for clouds, use cloud.<section>
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:param option: (str)
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:returns: (str) the value stored at section: {option: value}
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"""
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value = self._overrides.get(section, {}).get(option)
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if value is not None: |
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return value
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prefix = CLOUD_PREFIX + '.'
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if section.startswith(prefix): |
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return self.get_cloud(section[len(prefix):], option) |
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try:
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return RawConfigParser.get(self, section, option) |
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except (NoSectionError, NoOptionError):
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return DEFAULTS.get(section, {}).get(option)
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def set(self, section, option, value): |
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"""
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:param section: (str) HINT: for remotes use cloud.<section>
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:param option: (str)
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:param value: str
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"""
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prefix = CLOUD_PREFIX + '.'
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if section.startswith(prefix): |
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cloud = self._cloud_name(
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CLOUD_PREFIX + ' "' + section[len(prefix):] + '"') |
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return self.set_cloud(cloud, option, value) |
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if section not in RawConfigParser.sections(self): |
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self.add_section(section)
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RawConfigParser.set(self, section, option, value)
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def remove_option(self, section, option, also_remove_default=False): |
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try:
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if also_remove_default:
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DEFAULTS[section].pop(option) |
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RawConfigParser.remove_option(self, section, option)
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except NoSectionError:
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pass
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def remote_from_cloud(self, cloud, option): |
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d = self.get(CLOUD_PREFIX, cloud)
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if isinstance(d, dict): |
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d.pop(option) |
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def keys(self, section, include_defaults=True): |
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d = self._get_dict(section, include_defaults)
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return d.keys()
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def items(self, section, include_defaults=True): |
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d = self._get_dict(section, include_defaults)
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return d.items()
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def override(self, section, option, value): |
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self._overrides[section][option] = value
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def write(self): |
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cld_bu = self._get_dict(CLOUD_PREFIX)
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try:
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for r, d in self.items(CLOUD_PREFIX): |
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for k, v in d.items(): |
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self.set(CLOUD_PREFIX + ' "%s"' % r, k, v) |
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self.remove_section(CLOUD_PREFIX)
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with open(self.path, 'w') as f: |
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os.chmod(self.path, 0600) |
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f.write(HEADER.lstrip()) |
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f.flush() |
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RawConfigParser.write(self, f)
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finally:
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if CLOUD_PREFIX not in self.sections(): |
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self.add_section(CLOUD_PREFIX)
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for cloud, d in cld_bu.items(): |
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self.set(CLOUD_PREFIX, cloud, d)
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