def test_transaction_id(self):
with self.context.session.begin():
transaction = quark_db_api.transaction_create(self.context)
self.assertEqual(transaction.id, 1)
with self.context.session.begin():
transaction = quark_db_api.transaction_create(self.context)
self.assertEqual(transaction.id, 2)
with self.context.session.begin():
transaction = quark_db_api.transaction_create(self.context)
self.assertEqual(transaction.id, 3)
def attempt_to_reallocate_ip(self, context, net_id, port_id, reuse_after,
version=None, ip_address=None,
segment_id=None, subnets=None, **kwargs):
version = version or [4, 6]
elevated = context.elevated()
LOG.info("Attempting to reallocate an IP (step 1 of 3) - [{0}]".format(
utils.pretty_kwargs(network_id=net_id, port_id=port_id,
version=version, segment_id=segment_id,
subnets=subnets, ip_address=ip_address)))
if version == 6:
# Defers to the create case. The reason why is we'd have to look
# up subnets here to correctly generate the v6. If we split them
# up into reallocate and create, we'd be looking up the same
# subnets twice, which is a waste of time.
# TODO(mdietz): after reviewing this code, this block annoyingly
# doesn't trigger in the ANY case, since we end up
# using a list of [4, 6]. It works as expected most
# of the time, but we can anticipate that isolated
# networks will end up using sequential assignment.
# Probably want to rework this logic to compensate
# at some point. Considering they all come from the
# same MAC address pool, nothing bad will happen,
# just worth noticing and fixing.
LOG.info("Identified as v6 case, deferring to IP create path")
return []
sub_ids = []
if subnets:
sub_ids = subnets
elif segment_id:
subnets = db_api.subnet_find(elevated,
network_id=net_id,
segment_id=segment_id)
sub_ids = [s["id"] for s in subnets]
if not sub_ids:
LOG.info("No subnets matching segment_id {0} could be "
"found".format(segment_id))
raise ip_address_failure(net_id)
ip_kwargs = {
"network_id": net_id,
"deallocated": True,
"version": version,
"lock_id": None,
}
if reuse_after is not None:
ip_kwargs["reuse_after"] = reuse_after
if ip_address is not None:
ip_kwargs["ip_address"] = ip_address
del ip_kwargs["deallocated"]
if sub_ids:
ip_kwargs["subnet_id"] = sub_ids
ipam_log = kwargs.get('ipam_log', None)
for retry in xrange(CONF.QUARK.ip_address_retry_max):
attempt = None
if ipam_log:
attempt = ipam_log.make_entry("attempt_to_reallocate_ip")
LOG.info("Attempt {0} of {1}".format(
retry + 1, CONF.QUARK.ip_address_retry_max))
try:
with context.session.begin():
transaction = db_api.transaction_create(context)
m = models.IPAddress
update_kwargs = {
m.transaction_id: transaction.id,
m.address_type: kwargs.get("address_type", ip_types.FIXED),
m.deallocated: False,
m.deallocated_at: None,
m.used_by_tenant_id: context.tenant_id,
m.allocated_at: timeutils.utcnow(),
}
result = db_api.ip_address_reallocate(
elevated, update_kwargs, **ip_kwargs)
if not result:
LOG.info("Couldn't update any reallocatable addresses "
"given the criteria")
if attempt:
attempt.failed()
break
updated_address = db_api.ip_address_reallocate_find(
elevated, transaction.id)
if not updated_address:
if attempt:
attempt.failed()
continue
LOG.info("Address {0} is reallocated".format(
updated_address["address_readable"]))
return [updated_address]
except Exception:
if attempt:
attempt.failed()
LOG.exception("Error in reallocate ip...")
finally:
if attempt:
attempt.end()
return []
def allocate_mac_address(self, context, net_id, port_id, reuse_after,
mac_address=None,
use_forbidden_mac_range=False, **kwargs):
if mac_address:
mac_address = netaddr.EUI(mac_address).value
kwargs.update({"network_id": net_id, "port_id": port_id,
"mac_address": mac_address,
"use_forbidden_mac_range": use_forbidden_mac_range})
LOG.info(("Attempting to allocate a new MAC address "
"[{0}]").format(utils.pretty_kwargs(**kwargs)))
for retry in xrange(CONF.QUARK.mac_address_retry_max):
LOG.info("Attemping to reallocate deallocated MAC (step 1 of 3),"
" attempt {0} of {1}".format(
retry + 1, CONF.QUARK.mac_address_retry_max))
try:
with context.session.begin():
transaction = db_api.transaction_create(context)
update_kwargs = {
"deallocated": False,
"deallocated_at": None,
"transaction_id": transaction.id
}
filter_kwargs = {
"deallocated": True,
}
if mac_address is not None:
filter_kwargs["address"] = mac_address
if reuse_after is not None:
filter_kwargs["reuse_after"] = reuse_after
elevated = context.elevated()
result = db_api.mac_address_reallocate(
elevated, update_kwargs, **filter_kwargs)
if not result:
break
reallocated_mac = db_api.mac_address_reallocate_find(
elevated, transaction.id)
if reallocated_mac:
dealloc = netaddr.EUI(reallocated_mac["address"])
LOG.info("Found a suitable deallocated MAC {0}".format(
str(dealloc)))
LOG.info("MAC assignment for port ID {0} completed "
"with address {1}".format(port_id, dealloc))
return reallocated_mac
except Exception:
LOG.exception("Error in mac reallocate...")
continue
LOG.info("Couldn't find a suitable deallocated MAC, attempting "
"to create a new one")
# This could fail if a large chunk of MACs were chosen explicitly,
# but under concurrent load enough MAC creates should iterate without
# any given thread exhausting its retry count.
for retry in xrange(CONF.QUARK.mac_address_retry_max):
LOG.info("Attemping to find a range to create a new MAC in "
"(step 2 of 3), attempt {0} of {1}".format(
retry + 1, CONF.QUARK.mac_address_retry_max))
next_address = None
with context.session.begin():
try:
fn = db_api.mac_address_range_find_allocation_counts
mac_range = \
fn(context, address=mac_address,
use_forbidden_mac_range=use_forbidden_mac_range)
if not mac_range:
LOG.info("No MAC ranges could be found given "
"the criteria")
break
rng, addr_count = mac_range
LOG.info("Found a MAC range {0}".format(rng["cidr"]))
last = rng["last_address"]
first = rng["first_address"]
if (last - first + 1) <= addr_count:
# Somehow, the range got filled up without us
# knowing, so set the next_auto_assign to be -1
# so we never try to create new ones
# in this range
db_api.mac_range_update_set_full(context, rng)
LOG.info("MAC range {0} is full".format(rng["cidr"]))
continue
if mac_address:
next_address = mac_address
else:
next_address = rng["next_auto_assign_mac"]
if next_address + 1 > rng["last_address"]:
db_api.mac_range_update_set_full(context, rng)
else:
db_api.mac_range_update_next_auto_assign_mac(
context, rng)
context.session.refresh(rng)
except Exception:
LOG.exception("Error in updating mac range")
continue
# Based on the above, this should only fail if a MAC was
# was explicitly chosen at some point. As such, fall through
# here and get in line for a new MAC address to try
try:
mac_readable = str(netaddr.EUI(next_address))
LOG.info("Attempting to create new MAC {0} "
"(step 3 of 3)".format(mac_readable))
with context.session.begin():
address = db_api.mac_address_create(
context, address=next_address,
mac_address_range_id=rng["id"])
LOG.info("MAC assignment for port ID {0} completed with "
"address {1}".format(port_id, mac_readable))
return address
except Exception:
LOG.info("Failed to create new MAC {0}".format(mac_readable))
LOG.exception("Error in creating mac. MAC possibly duplicate")
continue
raise n_exc_ext.MacAddressGenerationFailure(net_id=net_id)
def insert_transaction(self):
with self.context.session.begin():
transaction = db_api.transaction_create(self.context)
return transaction
def attempt_to_reallocate_ip(self, context, net_id, port_id, reuse_after,
version=None, ip_address=None,
segment_id=None, subnets=None, **kwargs):
version = version or [4, 6]
elevated = context.elevated()
LOG.info("Attempting to reallocate an IP (step 1 of 3) - [{0}]".format(
utils.pretty_kwargs(network_id=net_id, port_id=port_id,
version=version, segment_id=segment_id,
subnets=subnets)))
if version == 6:
# Defers to the create case. The reason why is we'd have to look
# up subnets here to correctly generate the v6. If we split them
# up into reallocate and create, we'd be looking up the same
# subnets twice, which is a waste of time.
# TODO(mdietz): after reviewing this code, this block annoyingly
# doesn't trigger in the ANY case, since we end up
# using a list of [4, 6]. It works as expected most
# of the time, but we can anticipate that isolated
# networks will end up using sequential assignment.
# Probably want to rework this logic to compensate
# at some point. Considering they all come from the
# same MAC address pool, nothing bad will happen,
# just worth noticing and fixing.
LOG.info("Identified as v6 case, deferring to IP create path")
return []
sub_ids = []
if subnets:
sub_ids = subnets
elif segment_id:
subnets = db_api.subnet_find(elevated,
network_id=net_id,
segment_id=segment_id)
sub_ids = [s["id"] for s in subnets]
if not sub_ids:
LOG.info("No subnets matching segment_id {0} could be "
"found".format(segment_id))
raise exceptions.IpAddressGenerationFailure(
net_id=net_id)
ip_kwargs = {
"network_id": net_id,
"reuse_after": reuse_after,
"deallocated": True,
"ip_address": ip_address,
"version": version,
}
if ip_address:
del ip_kwargs["deallocated"]
if sub_ids:
ip_kwargs["subnet_id"] = sub_ids
ipam_log = kwargs.get('ipam_log', None)
for retry in xrange(CONF.QUARK.ip_address_retry_max):
attempt = None
if ipam_log:
attempt = ipam_log.make_entry("attempt_to_reallocate_ip")
LOG.info("Attempt {0} of {1}".format(
retry + 1, CONF.QUARK.ip_address_retry_max))
try:
with context.session.begin():
transaction = db_api.transaction_create(context)
m = models.IPAddress
update_kwargs = {
m.transaction_id: transaction.id,
m.address_type: kwargs.get("address_type", ip_types.FIXED),
m.deallocated: False,
m.deallocated_at: None,
m.used_by_tenant_id: context.tenant_id,
m.allocated_at: timeutils.utcnow(),
}
result = db_api.ip_address_reallocate(
elevated, update_kwargs, **ip_kwargs)
if not result:
LOG.info("Couldn't update any reallocatable addresses "
"given the criteria")
if attempt:
attempt.failed()
break
updated_address = db_api.ip_address_reallocate_find(
elevated, transaction.id)
if not updated_address:
if attempt:
attempt.failed()
continue
LOG.info("Address {0} is reallocated".format(
updated_address["address_readable"]))
return [updated_address]
except Exception:
if attempt:
attempt.failed()
LOG.exception("Error in reallocate ip...")
finally:
if attempt:
attempt.end()
return []
def allocate_mac_address(self, context, net_id, port_id, reuse_after,
mac_address=None,
use_forbidden_mac_range=False):
if mac_address:
mac_address = netaddr.EUI(mac_address).value
kwargs = {"network_id": net_id, "port_id": port_id,
"mac_address": mac_address,
"use_forbidden_mac_range": use_forbidden_mac_range}
LOG.info(("Attempting to allocate a new MAC address "
"[{0}]").format(utils.pretty_kwargs(**kwargs)))
for retry in xrange(CONF.QUARK.mac_address_retry_max):
LOG.info("Attemping to reallocate deallocated MAC (step 1 of 3),"
" attempt {0} of {1}".format(
retry + 1, CONF.QUARK.mac_address_retry_max))
try:
with context.session.begin():
transaction = db_api.transaction_create(context)
update_kwargs = {
"deallocated": False,
"deallocated_at": None,
"transaction_id": transaction.id
}
filter_kwargs = {
"reuse_after": reuse_after,
"deallocated": True,
"address": mac_address
}
elevated = context.elevated()
result = db_api.mac_address_reallocate(
elevated, update_kwargs, **filter_kwargs)
if not result:
break
reallocated_mac = db_api.mac_address_reallocate_find(
elevated, transaction.id)
if reallocated_mac:
dealloc = netaddr.EUI(reallocated_mac["address"])
LOG.info("Found a suitable deallocated MAC {0}".format(
str(dealloc)))
LOG.info("MAC assignment for port ID {0} completed "
"with address {1}".format(port_id, dealloc))
return reallocated_mac
except Exception:
LOG.exception("Error in mac reallocate...")
continue
LOG.info("Couldn't find a suitable deallocated MAC, attempting "
"to create a new one")
# This could fail if a large chunk of MACs were chosen explicitly,
# but under concurrent load enough MAC creates should iterate without
# any given thread exhausting its retry count.
for retry in xrange(CONF.QUARK.mac_address_retry_max):
LOG.info("Attemping to find a range to create a new MAC in "
"(step 2 of 3), attempt {0} of {1}".format(
retry + 1, CONF.QUARK.mac_address_retry_max))
next_address = None
with context.session.begin():
try:
fn = db_api.mac_address_range_find_allocation_counts
mac_range = \
fn(context, address=mac_address,
use_forbidden_mac_range=use_forbidden_mac_range)
if not mac_range:
LOG.info("No MAC ranges could be found given "
"the criteria")
break
rng, addr_count = mac_range
LOG.info("Found a MAC range {0}".format(rng["cidr"]))
last = rng["last_address"]
first = rng["first_address"]
if (last - first + 1) <= addr_count:
# Somehow, the range got filled up without us
# knowing, so set the next_auto_assign to be -1
# so we never try to create new ones
# in this range
db_api.mac_range_update_set_full(context, rng)
LOG.info("MAC range {0} is full".format(rng["cidr"]))
continue
if mac_address:
next_address = mac_address
else:
next_address = rng["next_auto_assign_mac"]
if next_address + 1 > rng["last_address"]:
db_api.mac_range_update_set_full(context, rng)
else:
db_api.mac_range_update_next_auto_assign_mac(
context, rng)
context.session.refresh(rng)
except Exception:
LOG.exception("Error in updating mac range")
continue
# Based on the above, this should only fail if a MAC was
# was explicitly chosen at some point. As such, fall through
# here and get in line for a new MAC address to try
try:
mac_readable = str(netaddr.EUI(next_address))
LOG.info("Attempting to create new MAC {0} "
"(step 3 of 3)".format(mac_readable))
with context.session.begin():
address = db_api.mac_address_create(
context, address=next_address,
mac_address_range_id=rng["id"])
LOG.info("MAC assignment for port ID {0} completed with "
"address {1}".format(port_id, mac_readable))
return address
except Exception:
LOG.info("Failed to create new MAC {0}".format(mac_readable))
LOG.exception("Error in creating mac. MAC possibly duplicate")
continue
raise exceptions.MacAddressGenerationFailure(net_id=net_id)
