def get_cached_knowledge():
"""Return cached items required to report to the server.
:return: Tuple of cached items: (maas_url, api_credentials). Either may
be None if the information has not been received from the server yet.
"""
maas_url = get_maas_url()
if maas_url is None:
logger.debug("Not reporting boot images: don't have API URL yet.")
api_credentials = get_recorded_api_credentials()
if api_credentials is None:
logger.debug("Not reporting boot images: don't have API key yet.")
return maas_url, api_credentials
def get_cached_knowledge():
"""Return cached items required to report to the server.
:return: Tuple of cached items: (maas_url, api_credentials). Either may
be None if the information has not been received from the server yet.
"""
maas_url = get_maas_url()
if maas_url is None:
logger.debug("Not reporting boot images: don't have API URL yet.")
api_credentials = get_recorded_api_credentials()
if api_credentials is None:
logger.debug("Not reporting boot images: don't have API key yet.")
return maas_url, api_credentials
def periodic_probe_task():
"""Probe for DHCP servers and set NodeGroupInterface.foriegn_dhcp.
This should be run periodically so that the database has an up-to-date
view of any rogue DHCP servers on the network.
NOTE: This uses blocking I/O with sequential polling of interfaces, and
hence doesn't scale well. It's a future improvement to make
to throw it in parallel threads or async I/O.
"""
# Items that the server must have sent us before we can do this.
knowledge = {
'maas_url': get_maas_url(),
'api_credentials': get_recorded_api_credentials(),
'nodegroup_uuid': get_recorded_nodegroup_uuid(),
}
if None in knowledge.values():
# The MAAS server hasn't sent us enough information for us to do
# this yet. Leave it for another time.
logger.info(
"Not probing for rogue DHCP servers; not all required knowledge "
"received from server yet. "
"Missing: %s" % ', '.join(
sorted(name
for name, value in knowledge.items() if value is None)))
return
# Determine all the active interfaces on this cluster (nodegroup).
interfaces = determine_cluster_interfaces(knowledge)
if interfaces is None:
logger.info("No interfaces on cluster, not probing DHCP.")
return
# Iterate over interfaces and probe each one.
for interface, ip in interfaces:
try:
servers = probe_interface(interface, ip)
except socket.error:
logger.exception(
"Failed to probe sockets; did you configure authbind as per "
"HACKING.txt?")
return
else:
if len(servers) > 0:
# Only send one, if it gets cleared out then the
# next detection pass will send a different one, if it
# still exists.
update_region_controller(knowledge, interface, servers.pop())
else:
update_region_controller(knowledge, interface, None)
def periodic_probe_task():
"""Probe for DHCP servers and set NodeGroupInterface.foriegn_dhcp.
This should be run periodically so that the database has an up-to-date
view of any rogue DHCP servers on the network.
NOTE: This uses blocking I/O with sequential polling of interfaces, and
hence doesn't scale well. It's a future improvement to make
to throw it in parallel threads or async I/O.
"""
# Items that the server must have sent us before we can do this.
knowledge = {
'maas_url': get_maas_url(),
'api_credentials': get_recorded_api_credentials(),
'nodegroup_uuid': get_recorded_nodegroup_uuid(),
}
if None in knowledge.values():
# The MAAS server hasn't sent us enough information for us to do
# this yet. Leave it for another time.
logger.info(
"Not probing for rogue DHCP servers; not all required knowledge "
"received from server yet. "
"Missing: %s" % ', '.join(sorted(
name for name, value in knowledge.items() if value is None)))
return
# Determine all the active interfaces on this cluster (nodegroup).
interfaces = determine_cluster_interfaces(knowledge)
if interfaces is None:
logger.info("No interfaces on cluster, not probing DHCP.")
return
# Iterate over interfaces and probe each one.
for interface, ip in interfaces:
try:
servers = probe_interface(interface, ip)
except socket.error:
logger.exception(
"Failed to probe sockets; did you configure authbind as per "
"HACKING.txt?")
return
else:
if len(servers) > 0:
# Only send one, if it gets cleared out then the
# next detection pass will send a different one, if it
# still exists.
update_region_controller(knowledge, interface, servers.pop())
else:
update_region_controller(knowledge, interface, None)
def create_node(mac, arch, power_type, power_parameters):
api_credentials = get_recorded_api_credentials()
if api_credentials is None:
raise Exception('Not creating node: no API key yet.')
client = MAASClient(MAASOAuth(*api_credentials), MAASDispatcher(),
get_maas_url())
data = {
'op': 'new',
'architecture': arch,
'power_type': power_type,
'power_parameters': power_parameters,
'mac_addresses': mac
}
return client.post('/api/1.0/nodes/', data)
def create_node(mac, arch, power_type, power_parameters):
api_credentials = get_recorded_api_credentials()
if api_credentials is None:
raise Exception('Not creating node: no API key yet.')
client = MAASClient(
MAASOAuth(*api_credentials), MAASDispatcher(),
get_maas_url())
data = {
'op': 'new',
'architecture': arch,
'power_type': power_type,
'power_parameters': power_parameters,
'mac_addresses': mac
}
return client.post('/api/1.0/nodes/', data)
def get_cached_knowledge():
"""Get all the information that we need to know, or raise an error.
:return: (client, nodegroup_uuid)
"""
api_credentials = get_recorded_api_credentials()
if api_credentials is None:
logger.error("Not updating tags: don't have API key yet.")
return None, None
nodegroup_uuid = get_recorded_nodegroup_uuid()
if nodegroup_uuid is None:
logger.error("Not updating tags: don't have UUID yet.")
return None, None
client = MAASClient(MAASOAuth(*api_credentials), MAASDispatcher(),
get_maas_url())
return client, nodegroup_uuid
def get_cached_knowledge():
"""Get all the information that we need to know, or raise an error.
:return: (client, nodegroup_uuid)
"""
api_credentials = get_recorded_api_credentials()
if api_credentials is None:
logger.error("Not updating tags: don't have API key yet.")
return None, None
nodegroup_uuid = get_recorded_nodegroup_uuid()
if nodegroup_uuid is None:
logger.error("Not updating tags: don't have UUID yet.")
return None, None
client = MAASClient(
MAASOAuth(*api_credentials), MAASDispatcher(),
get_maas_url())
return client, nodegroup_uuid
def send_leases(leases):
"""Send lease updates to the server API."""
# Items that the server must have sent us before we can do this.
knowledge = {
'maas_url': get_maas_url(),
'api_credentials': get_recorded_api_credentials(),
'nodegroup_uuid': get_recorded_nodegroup_uuid(),
}
if None in knowledge.values():
# The MAAS server hasn't sent us enough information for us to do
# this yet. Leave it for another time.
logger.info(
"Not sending DHCP leases to server: not all required knowledge "
"received from server yet. "
"Missing: %s"
% ', '.join(list_missing_items(knowledge)))
return
api_path = 'api/1.0/nodegroups/%s/' % knowledge['nodegroup_uuid']
oauth = MAASOAuth(*knowledge['api_credentials'])
MAASClient(oauth, MAASDispatcher(), knowledge['maas_url']).post(
api_path, 'update_leases', leases=json.dumps(leases))
def send_leases(leases):
"""Send lease updates to the server API."""
# Items that the server must have sent us before we can do this.
knowledge = {
'maas_url': get_maas_url(),
'api_credentials': get_recorded_api_credentials(),
'nodegroup_uuid': get_recorded_nodegroup_uuid(),
}
if None in knowledge.values():
# The MAAS server hasn't sent us enough information for us to do
# this yet. Leave it for another time.
logger.info(
"Not sending DHCP leases to server: not all required knowledge "
"received from server yet. "
"Missing: %s" % ', '.join(list_missing_items(knowledge)))
return
api_path = 'api/1.0/nodegroups/%s/' % knowledge['nodegroup_uuid']
oauth = MAASOAuth(*knowledge['api_credentials'])
MAASClient(oauth, MAASDispatcher(),
knowledge['maas_url']).post(api_path,
'update_leases',
leases=json.dumps(leases))
def test_get_maas_url_reads_MAAS_URL(self):
maas_url = factory.make_name('maas_url')
self.useFixture(EnvironmentVariableFixture('MAAS_URL', maas_url))
self.assertEqual(maas_url, get_maas_url())
def test_get_maas_url_reads_MAAS_URL(self):
maas_url = factory.make_name('maas_url')
self.useFixture(EnvironmentVariableFixture('MAAS_URL', maas_url))
self.assertEqual(maas_url, get_maas_url())