import json import logging import os logging.basicConfig() logger = logging.getLogger(name=__name__) logger.setLevel(logging.DEBUG) import requests from leap.base import constants as baseconstants from leap.base import providers from leap.eip import config as eipconfig from leap.eip import constants as eipconstants from leap.eip import exceptions as eipexceptions """ EIPConfigChecker ---------- this is the first of 3 consecutive checks that we're implementing. It is used from the eip conductor (a instance of EIPConnection that is managed from the QtApp), running `run_all` method before trying to call `connect` or any other of the state-changing methods. It checks that the needed files are provided or can be discovered over the net. Much of these tests are not specific to EIP module, and can be splitted into base.tests to be invoked by the base leap init routines. However, I'm testing them alltogether for the sake of having the whole unit reachable and testable as a whole. Other related checkers - not implemented yet -: * LeapNetworkChecker * ProviderCertChecker """ class EIPConfigChecker(object): """ Several tests needed to ensure a EIPConnection can be sucessfully established. use run_all to run all checks. """ def __init__(self, fetcher=requests): # we do not want to accept too many # argument on init. # we want tests # to be explicitely run. self.fetcher = fetcher self.eipconfig = eipconfig.EIPConfig() self.defaultprovider = providers.LeapProviderDefinition() self.eipserviceconfig = eipconfig.EIPServiceConfig() def run_all(self, checker=None, skip_download=False): """ runs all checks in a row. will raise if some error encountered. catching those exceptions is not our responsibility at this moment """ if not checker: checker = self # let's call all tests # needed for a sane eip session. # TODO: get rid of check_default. # check_complete should # be enough. but here to make early tests easier. checker.check_default_eipconfig() checker.check_is_there_default_provider() checker.fetch_definition(skip_download=skip_download) checker.fetch_eip_service_config(skip_download=skip_download) checker.check_complete_eip_config() #checker.ping_gateway() # public checks def check_default_eipconfig(self): """ checks if default eipconfig exists, and dumps a default file if not """ # XXX ONLY a transient check # because some old function still checks # for eip config at the beginning. # it *really* does not make sense to # dump it right now, we can get an in-memory # config object and dump it to disk in a # later moment logger.debug('checking default eip config') if not self._is_there_default_eipconfig(): self._dump_default_eipconfig() def check_is_there_default_provider(self, config=None): """ raises EIPMissingDefaultProvider if no default provider found on eip config. This is catched by ui and runs FirstRunWizard (MVS+) """ if config is None: config = self.eipconfig.get_config() logger.debug('checking default provider') provider = config.get('provider', None) if provider is None: raise eipexceptions.EIPMissingDefaultProvider # XXX raise also if malformed ProviderDefinition? return True def fetch_definition(self, skip_download=False, config=None, uri=None): """ fetches a definition file from server """ # TODO: # - Implement diff # - overwrite only if different. # (attend to serial field different, for instance) logger.debug('fetching definition') if skip_download: logger.debug('(fetching def skipped)') return True if config is None: config = self.defaultprovider.get_config() if uri is None: domain = config.get('provider', None) uri = self._get_provider_definition_uri(domain=domain) self.defaultprovider.load(from_uri=uri, fetcher=self.fetcher) self.defaultprovider.save() def fetch_eip_service_config(self, skip_download=False, config=None, uri=None): if skip_download: return True if config is None: config = self.eipserviceconfig.get_config() if uri is None: domain = config.get('provider', None) uri = self._get_eip_service_uri(domain=domain) self.eipserviceconfig.load(from_uri=uri, fetcher=self.fetcher) self.eipserviceconfig.save() def check_complete_eip_config(self, config=None): # TODO check for gateway if config is None: config = self.config try: 'trying assertions' assert 'provider' in config assert config['provider'] is not None # XXX assert there is gateway !! except AssertionError: raise eipexceptions.EIPConfigurationError # XXX TODO: # We should WRITE eip config if missing or # incomplete at this point def ping_gateway(self): raise NotImplementedError # # private helpers # def _is_there_default_eipconfig(self): return self.eipconfig.exists() def _dump_default_eipconfig(self): self.eipconfig.save() def _get_provider_definition_uri(self, domain=None, path=None): if domain is None: domain = baseconstants.DEFAULT_TEST_PROVIDER if path is None: path = baseconstants.DEFINITION_EXPECTED_PATH return "https://%s/%s" % (domain, path) def _get_eip_service_uri(self, domain=None, path=None): if domain is None: domain = baseconstants.DEFAULT_TEST_PROVIDER if path is None: path = eipconstants.EIP_SERVICE_EXPECTED_PATH return "https://%s/%s" % (domain, path)