def decompose_machine(pod_type, context, pod_id, name):
"""Decompose a machine. The machine to delete is contained in the `context`
just like power actions."""
pod_driver = PodDriverRegistry.get_item(pod_type)
if pod_driver is None:
raise UnknownPodType(pod_type)
d = pod_driver.decompose(pod_id, context)
if not isinstance(d, Deferred):
raise PodActionFail(
"bad pod driver '%s'; 'decompose' did not return Deferred." %
pod_type)
def convert(result):
"""Convert the result to send over RPC."""
if result is None or not isinstance(result, DiscoveredPodHints):
raise PodActionFail(
"bad pod driver '%s'; 'decompose' returned invalid result." %
pod_type)
else:
return {"hints": result}
def catch_all(failure):
"""Convert all failures into `PodActionFail` unless already a
`PodActionFail` or `NotImplementedError`."""
# Log locally to help debugging.
log.err(failure, "Failed to decompose machine.")
if failure.check(NotImplementedError, PodActionFail):
return failure
else:
raise PodActionFail(get_error_message(failure.value))
d.addCallback(convert)
d.addErrback(catch_all)
return d
def compose_machine(pod_type, context, request, pod_id, name):
"""Compose a machine that at least matches equal to or greater than
`request`.
The region controller handles parsing the outputed `DiscoveredMachine` and
updating the database as required.
"""
pod_driver = PodDriverRegistry.get_item(pod_type)
if pod_driver is None:
raise UnknownPodType(pod_type)
d = pod_driver.compose(pod_id, context, request)
if not isinstance(d, Deferred):
raise PodActionFail(
"bad pod driver '%s'; 'compose' did not return Deferred."
% pod_type
)
def convert(result):
"""Convert the result to send over RPC."""
if result is None:
# None is allowed when a machine could not be composed with the
# driver. This means it could not match the request. Returning None
# allows the region to try another pod if available to compose
# that machine.
raise PodInvalidResources()
else:
if (
isinstance(result, tuple)
and len(result) == 2
and isinstance(result[0], DiscoveredMachine)
and isinstance(result[1], DiscoveredPodHints)
):
return {"machine": result[0], "hints": result[1]}
else:
raise PodActionFail(
"bad pod driver '%s'; 'compose' returned "
"invalid result." % pod_type
)
def catch_all(failure):
"""Convert all failures into `PodActionFail` unless already a
`PodActionFail`, `PodInvalidResources` or `NotImplementedError`."""
if failure.check(PodInvalidResources):
# Driver returned its own invalid resource exception instead of
# None. Just pass this onto the region.
return failure
# Log locally to help debugging.
log.err(failure, "%s: Failed to compose machine: %s" % (name, request))
if failure.check(NotImplementedError, PodActionFail):
return failure
else:
raise PodActionFail(get_error_message(failure.value))
d.addCallback(convert)
d.addErrback(catch_all)
return d
def discover_pod(pod_type, context, pod_id=None, name=None):
"""Discover all the pod information and return the result to the
region controller.
The region controller handles parsing the output and updating the database
as required.
"""
pod_driver = PodDriverRegistry.get_item(pod_type)
if pod_driver is None:
raise UnknownPodType(pod_type)
try:
d = ensureDeferred(pod_driver.discover(pod_id, context))
except ValueError:
raise PodActionFail(
"bad pod driver '%s'; 'discover' did not return Deferred."
% pod_type
)
def convert(result):
"""Convert the result to send over RPC."""
if result is None:
raise PodActionFail("unable to discover pod information.")
elif not isinstance(result, DiscoveredPod):
raise PodActionFail(
"bad pod driver '%s'; 'discover' returned invalid result."
% pod_type
)
else:
return {"pod": result}
def catch_all(failure):
"""Convert all failures into `PodActionFail` unless already a
`PodActionFail` or `NotImplementedError`."""
# Log locally to help debugging.
log.err(failure, "Failed to discover pod.")
if failure.check(NotImplementedError, PodActionFail):
return failure
else:
raise PodActionFail(get_error_message(failure.value))
d.addCallback(convert)
d.addErrback(catch_all)
return d
def send_pod_commissioning_results(
pod_type,
context,
pod_id,
name,
system_id,
consumer_key,
token_key,
token_secret,
metadata_url,
):
"""Send commissioning results for the Pod to the region."""
pod_driver = PodDriverRegistry.get_item(pod_type)
if pod_driver is None:
raise UnknownPodType(pod_type)
d = pod_driver.get_commissioning_data(pod_id, context)
if not isinstance(d, Deferred):
raise PodActionFail(
f"bad pod driver '{pod_type}'; 'get_commissioning_data' did not return Deferred."
)
def send_items(commissioning_results):
for filename, content in commissioning_results.items():
if isinstance(content, dict) or isinstance(content, list):
content = json.dumps(content, indent=4)
if not isinstance(content, bytes):
content = content.encode()
try:
signal(
url=metadata_url.geturl(),
creds={
"consumer_key": consumer_key,
"token_key": token_key,
"token_secret": token_secret,
"consumer_secret": "",
},
status="WORKING",
files={
# UI shows combined output by default.
filename: content,
# STDOUT output is whats actually proceed.
f"{filename}.out": content,
# Clear out STDERR and results.
f"{filename}.err": b"",
f"{filename}.yaml": b"",
},
exit_status=0,
error=f"Finished {filename}: 0",
)
except SignalException as e:
raise PodActionFail(
f"Unable to send Pod commissioning information for {name}({system_id}): {e.error}"
)
def catch_all(failure):
"""Convert all failures into `PodActionFail` unless already a
`PodActionFail` or `NotImplementedError`."""
# Log locally to help debugging.
log.err(failure, "Failed to send_pod_commissioning_results.")
if failure.check(NotImplementedError, PodActionFail):
return failure
else:
raise PodActionFail(get_error_message(failure.value))
d.addCallback(
lambda commissioning_results: deferToThread(
send_items, commissioning_results
)
)
d.addCallback(lambda _: {})
d.addErrback(catch_all)
return d