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+# vi: ts=4 expandtab
+#
+# Copyright (C) 2012 Canonical Ltd.
+# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
+# Copyright (C) 2012 Yahoo! Inc.
+#
+# Author: Scott Moser <scott.moser@canonical.com>
+# Author: Juerg Haefliger <juerg.haefliger@hp.com>
+# Author: Joshua Harlow <harlowja@yahoo-inc.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3, as
+# published by the Free Software Foundation.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import copy
+import os
+
+from cloudinit import log as logging
+
+LOG = logging.getLogger(__name__)
+
+# This class is the high level wrapper that provides
+# access to cloud-init objects without exposing the stage objects
+# to handler and or module manipulation. It allows for cloud
+# init to restrict what those types of user facing code may see
+# and or adjust (which helps avoid code messing with each other)
+#
+# It also provides util functions that avoid having to know
+# how to get a certain member from this submembers as well
+# as providing a backwards compatible object that can be maintained
+# while the stages/other objects can be worked on independently...
+
+
+class Cloud(object):
+ def __init__(self, datasource, paths, cfg, distro, runners):
+ self.datasource = datasource
+ self.paths = paths
+ self.distro = distro
+ self._cfg = cfg
+ self._runners = runners
+
+ # If a 'user' manipulates logging or logging services
+ # it is typically useful to cause the logging to be
+ # setup again.
+ def cycle_logging(self):
+ logging.resetLogging()
+ logging.setupLogging(self.cfg)
+
+ @property
+ def cfg(self):
+ # Ensure that not indirectly modified
+ return copy.deepcopy(self._cfg)
+
+ def run(self, name, functor, args, freq=None, clear_on_fail=False):
+ return self._runners.run(name, functor, args, freq, clear_on_fail)
+
+ def get_template_filename(self, name):
+ fn = self.paths.template_tpl % (name)
+ if not os.path.isfile(fn):
+ LOG.warn("No template found at %s for template named %s", fn, name)
+ return None
+ return fn
+
+ # The rest of thes are just useful proxies
+ def get_userdata(self):
+ return self.datasource.get_userdata()
+
+ def get_instance_id(self):
+ return self.datasource.get_instance_id()
+
+ def get_public_ssh_keys(self):
+ return self.datasource.get_public_ssh_keys()
+
+ def get_locale(self):
+ return self.datasource.get_locale()
+
+ def get_local_mirror(self):
+ return self.datasource.get_local_mirror()
+
+ def get_hostname(self, fqdn=False):
+ return self.datasource.get_hostname(fqdn=fqdn)
+
+ def device_name_to_device(self, name):
+ return self.datasource.device_name_to_device(name)
+
+ def get_ipath_cur(self, name=None):
+ return self.paths.get_ipath_cur(name)
+
+ def get_cpath(self, name=None):
+ return self.paths.get_cpath(name)
+
+ def get_ipath(self, name=None):
+ return self.paths.get_ipath(name)