def add_machine(self, request):
"""Handles an incoming CatalogMachineAdditionRequest."""
user = auth.get_current_identity().to_bytes()
logging.info(
'Received CatalogMachineAdditionRequest:\nUser: %s\n%s',
user,
request,
)
error = self.check_backend(request) or self.check_hostname(request)
if error:
return rpc_messages.CatalogManipulationResponse(
error=error,
machine_addition_request=request,
)
if request.policies.pubsub_topic:
if not pubsub.validate_topic(request.policies.pubsub_topic):
logging.warning(
'Invalid topic for Cloud Pub/Sub: %s',
request.policies.pubsub_topic,
)
return rpc_messages.CatalogManipulationResponse(
error=rpc_messages.CatalogManipulationRequestError.
INVALID_TOPIC,
machine_addition_request=request,
)
if not request.policies.pubsub_project:
logging.info(
'Cloud Pub/Sub project unspecified, using default: %s',
PUBSUB_DEFAULT_PROJECT,
)
request.policies.pubsub_project = PUBSUB_DEFAULT_PROJECT
if request.policies.pubsub_project:
error = None
if not pubsub.validate_project(request.policies.pubsub_project):
logging.warning(
'Invalid project for Cloud Pub/Sub: %s',
request.policies.pubsub_project,
)
error = rpc_messages.CatalogManipulationRequestError.INVALID_PROJECT
elif not request.policies.pubsub_topic:
logging.warning(
'Cloud Pub/Sub project specified without specifying topic: %s',
request.policies.pubsub_project,
)
error = rpc_messages.CatalogManipulationRequestError.UNSPECIFIED_TOPIC
if error:
return rpc_messages.CatalogManipulationResponse(
error=error, machine_addition_request=request)
return self._add_machine(request)
def add_machine(self, request):
"""Handles an incoming CatalogMachineAdditionRequest."""
user = auth.get_current_identity().to_bytes()
logging.info(
'Received CatalogMachineAdditionRequest:\nUser: %s\n%s',
user,
request,
)
error = self.check_backend(request) or self.check_hostname(request)
if error:
return rpc_messages.CatalogManipulationResponse(
error=error,
machine_addition_request=request,
)
if request.policies.pubsub_topic:
if not pubsub.validate_topic(request.policies.pubsub_topic):
logging.warning(
'Invalid topic for Cloud Pub/Sub: %s',
request.policies.pubsub_topic,
)
return rpc_messages.CatalogManipulationResponse(
error=rpc_messages.CatalogManipulationRequestError.INVALID_TOPIC,
machine_addition_request=request,
)
if not request.policies.pubsub_project:
logging.info(
'Cloud Pub/Sub project unspecified, using default: %s',
PUBSUB_DEFAULT_PROJECT,
)
request.policies.pubsub_project = PUBSUB_DEFAULT_PROJECT
if request.policies.pubsub_project:
error = None
if not pubsub.validate_project(request.policies.pubsub_project):
logging.warning(
'Invalid project for Cloud Pub/Sub: %s',
request.policies.pubsub_project,
)
error = rpc_messages.CatalogManipulationRequestError.INVALID_PROJECT
elif not request.policies.pubsub_topic:
logging.warning(
'Cloud Pub/Sub project specified without specifying topic: %s',
request.policies.pubsub_project,
)
error = rpc_messages.CatalogManipulationRequestError.UNSPECIFIED_TOPIC
if error:
return rpc_messages.CatalogManipulationResponse(
error=error, machine_addition_request=request)
return self._add_machine(request)
def lease(self, request):
"""Handles an incoming LeaseRequest."""
# Hash the combination of client + client-generated request ID in order to
# deduplicate responses on a per-client basis.
user = auth.get_current_identity().to_bytes()
request_hash = models.LeaseRequest.generate_key(user, request).id()
logging.info(
'Received LeaseRequest:\nUser: %s\nRequest hash: %s\n%s',
user,
request_hash,
request,
)
if request.pubsub_topic:
if not pubsub.validate_topic(request.pubsub_topic):
logging.warning(
'Invalid topic for Cloud Pub/Sub: %s',
request.pubsub_topic,
)
return rpc_messages.LeaseResponse(
error=rpc_messages.LeaseRequestError.INVALID_TOPIC,
)
if not request.pubsub_project:
logging.info(
'Cloud Pub/Sub project unspecified, using default: %s',
PUBSUB_DEFAULT_PROJECT,
)
request.pubsub_project = PUBSUB_DEFAULT_PROJECT
if request.pubsub_project:
if not pubsub.validate_project(request.pubsub_project):
logging.warning(
'Invalid project for Cloud Pub/Sub: %s',
request.pubsub_topic,
)
return rpc_messages.LeaseResponse(
error=rpc_messages.LeaseRequestError.INVALID_PROJECT,
)
elif not request.pubsub_topic:
logging.warning(
'Cloud Pub/Sub project specified without specifying topic: %s',
request.pubsub_project,
)
return rpc_messages.LeaseResponse(
error=rpc_messages.LeaseRequestError.UNSPECIFIED_TOPIC,
)
duplicate = models.LeaseRequest.get_by_id(request_hash)
deduplication_checksum = models.LeaseRequest.compute_deduplication_checksum(
request,
)
if duplicate:
# Found a duplicate request ID from the same user. Attempt deduplication.
if deduplication_checksum == duplicate.deduplication_checksum:
# The LeaseRequest RPC we just received matches the original.
# We're safe to dedupe.
logging.info(
'Dropped duplicate LeaseRequest:\n%s', duplicate.response,
)
return duplicate.response
else:
logging.warning(
'Request ID reuse:\nOriginally used for:\n%s',
duplicate.request
)
return rpc_messages.LeaseResponse(
error=rpc_messages.LeaseRequestError.REQUEST_ID_REUSE,
)
else:
logging.info('Storing LeaseRequest')
response = rpc_messages.LeaseResponse()
response.request_hash = request_hash
models.LeaseRequest(
deduplication_checksum=deduplication_checksum,
id=request_hash,
owner=auth.get_current_identity(),
request=request,
response=response,
state=models.LeaseRequestStates.UNTRIAGED,
).put()
logging.info('Sending LeaseResponse:\n%s', response)
return response
def _lease(self, request, user, request_hash):
"""Handles an incoming LeaseRequest."""
if request.pubsub_topic:
if not pubsub.validate_topic(request.pubsub_topic):
logging.warning(
'Invalid topic for Cloud Pub/Sub: %s',
request.pubsub_topic,
)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.INVALID_TOPIC,
)
if not request.pubsub_project:
logging.info(
'Cloud Pub/Sub project unspecified, using default: %s',
PUBSUB_DEFAULT_PROJECT,
)
request.pubsub_project = PUBSUB_DEFAULT_PROJECT
if request.pubsub_project:
if not pubsub.validate_project(request.pubsub_project):
logging.warning(
'Invalid project for Cloud Pub/Sub: %s',
request.pubsub_topic,
)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.INVALID_PROJECT,
)
elif not request.pubsub_topic:
logging.warning(
'Cloud Pub/Sub project specified without specifying topic: %s',
request.pubsub_project,
)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.UNSPECIFIED_TOPIC,
)
duplicate = models.LeaseRequest.get_by_id(request_hash)
deduplication_checksum = models.LeaseRequest.compute_deduplication_checksum(
request, )
if duplicate:
# Found a duplicate request ID from the same user. Attempt deduplication.
if deduplication_checksum == duplicate.deduplication_checksum:
# The LeaseRequest RPC we just received matches the original.
# We're safe to dedupe.
logging.info(
'Dropped duplicate LeaseRequest:\n%s',
duplicate.response,
)
return duplicate.response
else:
logging.warning('Request ID reuse:\nOriginally used for:\n%s',
duplicate.request)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.REQUEST_ID_REUSE,
)
else:
logging.info('Storing LeaseRequest')
response = rpc_messages.LeaseResponse(
client_request_id=request.request_id,
request_hash=request_hash,
state=rpc_messages.LeaseRequestState.UNTRIAGED,
)
models.LeaseRequest(
deduplication_checksum=deduplication_checksum,
id=request_hash,
owner=auth.get_current_identity(),
request=request,
response=response,
).put()
logging.info('Sending LeaseResponse:\n%s', response)
return response
def _lease(self, request, user, request_hash):
"""Handles an incoming LeaseRequest."""
# Arbitrary limit. Increase if necessary.
MAX_LEASE_DURATION = 60 * 60 * 24 * 2
now = utils.time_time()
max_lease_expiration_ts = now + MAX_LEASE_DURATION
metrics.lease_requests_received.increment()
if request.duration:
if request.lease_expiration_ts:
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.
MUTUAL_EXCLUSION_ERROR,
)
if request.duration < 1:
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.NONPOSITIVE_DEADLINE,
)
if request.duration > MAX_LEASE_DURATION:
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.LEASE_TOO_LONG,
)
elif request.lease_expiration_ts:
if request.lease_expiration_ts <= now:
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.
LEASE_EXPIRATION_TS_ERROR,
)
if request.lease_expiration_ts > max_lease_expiration_ts:
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.LEASE_TOO_LONG,
)
else:
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.LEASE_LENGTH_UNSPECIFIED,
)
if request.pubsub_topic:
if not pubsub.validate_topic(request.pubsub_topic):
logging.warning(
'Invalid topic for Cloud Pub/Sub: %s',
request.pubsub_topic,
)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.INVALID_TOPIC,
)
if not request.pubsub_project:
logging.info(
'Cloud Pub/Sub project unspecified, using default: %s',
PUBSUB_DEFAULT_PROJECT,
)
request.pubsub_project = PUBSUB_DEFAULT_PROJECT
if request.pubsub_project:
if not pubsub.validate_project(request.pubsub_project):
logging.warning(
'Invalid project for Cloud Pub/Sub: %s',
request.pubsub_topic,
)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.INVALID_PROJECT,
)
elif not request.pubsub_topic:
logging.warning(
'Cloud Pub/Sub project specified without specifying topic: %s',
request.pubsub_project,
)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.UNSPECIFIED_TOPIC,
)
duplicate = models.LeaseRequest.get_by_id(request_hash)
deduplication_checksum = models.LeaseRequest.compute_deduplication_checksum(
request, )
if duplicate:
# Found a duplicate request ID from the same user. Attempt deduplication.
if deduplication_checksum == duplicate.deduplication_checksum:
metrics.lease_requests_deduped.increment()
# The LeaseRequest RPC we just received matches the original.
# We're safe to dedupe.
logging.info(
'Dropped duplicate LeaseRequest:\n%s',
duplicate.response,
)
return duplicate.response
else:
logging.warning('Request ID reuse:\nOriginally used for:\n%s',
duplicate.request)
return rpc_messages.LeaseResponse(
client_request_id=request.request_id,
error=rpc_messages.LeaseRequestError.REQUEST_ID_REUSE,
)
else:
logging.info('Storing LeaseRequest')
response = rpc_messages.LeaseResponse(
client_request_id=request.request_id,
request_hash=request_hash,
state=rpc_messages.LeaseRequestState.UNTRIAGED,
)
models.LeaseRequest(
deduplication_checksum=deduplication_checksum,
id=request_hash,
owner=auth.get_current_identity(),
request=request,
response=response,
).put()
logging.info('Sending LeaseResponse:\n%s', response)
return response
