class LibcloudBaseProvider(ComputeNodeABC):
"""
Base class for LibCloud based providers.
Has default calls for NodeDriver methods that
typically don't require any different processing
for different clouds or `ex_` methods.
"""
def __init__(self, cloud, config):
"""
Sets `cloud`, `credentials`, `default`, and `cm` values.
:param cloud:
:param config:
"""
super().__init__(cloud, config)
self.driver = NodeDriver("")
self.default_image = None
self.default_size = None
self.public_key_path = config["profile"]["key"]["public"]
def create(self, name=None, image=None, size=None, timeout=360, **kwargs):
"""
creates a named node
:return:
"""
return self.driver.create_node(name=name,
image=image
or self._get_default_image(),
size=image or self._get_default_size(),
**kwargs)
def nodes(self):
"""
list all nodes id
:return: an array of libcloud Node objects
"""
return self.driver.list_nodes()
def info(self, name=None):
"""
get info for one node in the list of nodes
:param name:
:return:
"""
node = next(filter(lambda n: n.name == name, self.nodes()), None)
return node
def suspend(self, name=None):
return self.stop(name)
def resume(self, name=None):
"""
resume the named node
:param name: the name of the node
:return: the dict of the node
"""
return self.start(name)
def destroy(self, name=None):
"""
Destroys the node
:param name: the name of the node
:return: the dict of the node
"""
node = self.info(name)
self.driver.destroy_node(node)
return node
@DatabaseUpdate("sizes", ComputeNodeABC.map_default)
def list_sizes(self):
"""
list all sizes available from this provider
:return:
"""
return self.driver.list_sizes()
@DatabaseUpdate("locations", ComputeNodeABC.map_default)
def list_locations(self):
"""
list all sizes available from this provider
:return:
"""
return self.driver.list_locations()
def _get_default_image(self):
"""
Get an image object corresponding to teh default image id in config.
:return:
"""
if self.default_image is None:
self.default_image = self.driver.get_image(self.default["image"])
return self.default_image
def _get_default_size(self):
"""
Get an size object corresponding to teh default image id in config.
:return:
"""
if self.default_size is None:
sizes = self.list_sizes()
self.default_size = [
s for s in sizes if s["id"] == self.default["size"]
][0]
return dotdict(self.default_size)
def start(self, name):
pass
def stop(self, name=None):
pass
