def test(self):
with self.root.ui.throbber(_("Check compute credentials/connectivity")):
try:
self.driver.list_nodes()
except InvalidCredsError:
raise error.InvalidCredError(
"Unable to login to compute service", anchor=self.params.driver.id.anchor)
def destroy(self):
""" Try to connect the layer successfully, then destroy the underlying node. """
self.load()
if not self.layer.attached:
return
with self.root.ui.throbber(_("Destroy node %r") % self.full_name):
self.layer.destroy()
def destroy(self):
if not self.libcloud_node:
self.state.refresh()
if "their_name" in self.state:
self.libcloud_node = self._find_node(self.state.their_name)
if not self.libcloud_node:
self.libcloud_node = self._find_node(self.full_name)
if not self.libcloud_node:
return
with self.root.ui.throbber(_("Destroy node '%r'") % self.full_name):
self.libcloud_node.destroy()
def create(self):
with self.root.ui.throbber(_("Create node '%r'") % (self.full_name, )):
self.layer.create()
logger.debug("Waiting for node %r to start" % (self.full_name, ))
try:
with self.root.ui.throbber(_("Wait for node '%r' to start") % self.full_name):
self.layer.wait()
logger.debug("Node %r running" % (self.full_name, ))
self.synchronise()
self.root.changed()
return True
except NodeFailedToStartException:
logger.warning("Node %r did not start before timeout. retrying." % self.full_name)
self.destroy()
return False
except Exception:
logger.exception(
"Node %r had an unexpected error - node will be cleaned up and processing will stop" % (self.full_name,))
self.node.destroy()
raise
def _find_node(self, name):
try:
existing = [
n for n in self.driver.list_nodes() if n.name == name and n.state != NodeState.TERMINATED]
except InvalidCredsError:
raise error.InvalidCredsError(
"Credentials invalid - unable to check/create '%s'" % self.params.name.as_string(), anchor=None)
if len(existing) > 1:
raise LibcloudError(
_("There are already multiple nodes called '%s'") % name)
elif not existing:
return None
node = existing[0]
if node.state != NodeState.RUNNING:
ex_start = getattr(node.driver, "ex_start", None)
if ex_start is not None:
logger.debug("Starting node")
ex_start(node)
else:
raise LibcloudError(
_("The node is not running and cannot be started"))
logger.debug(
"Node '%s' already running - not creating new node" % (name, ))
return node
def apply(self):
if self.libcloud_node:
return
self.state.refresh()
if "their_name" in self.state:
self.libcloud_node = self._find_node(self.state.their_name)
if not self.libcloud_node:
self.libcloud_node = self._find_node(self.full_name)
if self.libcloud_node:
logger.debug("Applying to node %r at %r/%r" %
(self.libcloud_node.name, self.libcloud_node.public_ip, self.libcloud_node.private_ip))
self._update_node_info()
return
if self.root.readonly:
self._fake_node_info()
return
logger.debug("Node will be %r" % self.full_name)
for tries in range(10):
logger.debug("Creating %r, attempt %d" % (self.full_name, tries))
with self.root.ui.throbber(_("Create node '%r'") % (self.full_name, )):
kwargs = args_from_expression(self.driver.create_node, self.params, ignore=(
"name", "image", "size"), kwargs=getattr(self.driver, "create_node_kwargs", []))
if not 'ex_keyname' in kwargs:
kwargs['auth'] = self._get_auth()
if 'ex_iamprofile' in kwargs:
kwargs['ex_iamprofile'] = kwargs['ex_iamprofile'].encode("utf-8")
if self.root.simulate:
self._fake_node_info()
self.root.changed()
return
node = self.driver.create_node(
name=self.full_name,
image=self._get_image(),
size=self._get_size(),
**kwargs
)
logger.debug("Waiting for node %r to start" % (self.full_name, ))
try:
with self.root.ui.throbber(_("Wait for node '%r' to start") % self.full_name):
self.libcloud_node, self.ip_addresses = self.driver.wait_until_running(
[node], wait_period=1, timeout=600)[0]
logger.debug("Node %r running" % (self.full_name, ))
# self.their_name = self.libcloud_node.name
self._update_node_info()
self.root.changed()
return
except LibcloudError as e:
logger.warning(
"Node %r did not start before timeout. retrying." % self.full_name)
node.destroy()
continue
except Exception as e:
logger.warning(
"Node %r had an unexpected error %s - node will be cleaned up and processing will stop" % (self.full_name, e))
node.destroy()
raise
return
logger.error("Unable to create node successfully. giving up.")
raise IOError()
def test(self):
""" Check that we're able to connect to the underlying
implementation. Will raise an exception if there is a failure. """
with self.root.ui.throbber(_("Check compute credentials/connectivity")):
self.layer.test()
