def remove_udp(ctx, global_ip, global_port, local_ip, local_port):
"""Remove Static UDP Protocol NAPT-related configutation"""
# Verify the ip address format
if is_valid_ipv4_address(local_ip) is False:
ctx.fail(
"Given local ip address {} is invalid. Please enter a valid local ip address !!"
.format(local_ip))
if is_valid_ipv4_address(global_ip) is False:
ctx.fail(
"Given global ip address {} is invalid. Please enter a valid global ip address !!"
.format(global_ip))
config_db = ConfigDBConnector()
config_db.connect()
entryFound = False
table = "STATIC_NAPT"
key = "{}|UDP|{}".format(global_ip, global_port)
dataKey1 = 'local_ip'
dataKey2 = 'local_port'
data = config_db.get_entry(table, key)
if data:
if data[dataKey1] == local_ip and data[dataKey2] == str(local_port):
config_db.set_entry(table, key, None)
entryFound = True
if entryFound is False:
click.echo("Trying to delete static napt entry, which is not present.")
def remove_pool(ctx, pool_name):
"""Remove Pool for Dynamic NAT-related configutation"""
entryFound = False
table = "NAT_POOL"
key = pool_name
if len(pool_name) > 32:
ctx.fail(
"Invalid pool name. Maximum allowed pool name is 32 characters !!")
config_db = ConfigDBConnector()
config_db.connect()
data = config_db.get_entry(table, key)
if not data:
click.echo("Trying to delete pool, which is not present.")
entryFound = True
binding_dict = config_db.get_table('NAT_BINDINGS')
if binding_dict and entryFound == False:
for binding_name, binding_values in binding_dict.items():
if binding_values['nat_pool'] == pool_name:
click.echo(
"Pool is not removed, as it is mapped to Binding {}, remove the pool binding first !!"
.format(binding_name))
entryFound = True
break
if entryFound == False:
config_db.set_entry(table, key, None)
def remove_basic(ctx, global_ip, local_ip):
"""Remove Static NAT-related configutation"""
# Verify the ip address format
if is_valid_ipv4_address(local_ip) is False:
ctx.fail(
"Given local ip address {} is invalid. Please enter a valid local ip address !!"
.format(local_ip))
if is_valid_ipv4_address(global_ip) is False:
ctx.fail(
"Given global ip address {} is invalid. Please enter a valid global ip address !!"
.format(global_ip))
config_db = ConfigDBConnector()
config_db.connect()
entryFound = False
table = 'STATIC_NAT'
key = global_ip
dataKey = 'local_ip'
data = config_db.get_entry(table, key)
if data:
if data[dataKey] == local_ip:
config_db.set_entry(table, key, None)
entryFound = True
if entryFound is False:
click.echo("Trying to delete static nat entry, which is not present.")
def add(address, timeout, key, auth_type, port, pri, use_mgmt_vrf):
"""Specify a TACACS+ server"""
if not clicommon.is_ipaddress(address):
click.echo('Invalid ip address')
return
config_db = ConfigDBConnector()
config_db.connect()
old_data = config_db.get_entry('TACPLUS_SERVER', address)
if old_data != {}:
click.echo('server %s already exists' % address)
else:
data = {
'tcp_port': str(port),
'priority': pri
}
if auth_type is not None:
data['auth_type'] = auth_type
if timeout is not None:
data['timeout'] = str(timeout)
if key is not None:
data['passkey'] = key
if use_mgmt_vrf :
data['vrf'] = "mgmt"
config_db.set_entry('TACPLUS_SERVER', address, data)
def del_table_key(table, entry, key):
config_db = ConfigDBConnector()
config_db.connect()
data = config_db.get_entry(table, entry)
if data:
if key in data:
del data[key]
config_db.set_entry(table, entry, data)
def delete(address):
"""Delete a TACACS+ server"""
if not clicommon.is_ipaddress(address):
click.echo('Invalid ip address')
return
config_db = ConfigDBConnector()
config_db.connect()
config_db.set_entry('TACPLUS_SERVER', address, None)
def test_ConfigDBSubscribe():
table_name = 'TEST_TABLE'
test_key = 'key1'
test_data = {'field1': 'value1'}
global output_data
global stop_listen_thread
output_data = ""
stop_listen_thread = False
def test_handler(key, data):
global output_data
assert key == test_key
assert data == test_data
output_data = test_data['field1']
# the config_db.listen() is a blocking function so could not use that in the tests
# this function has similar logic with a way to exit the listen function
def listen_thread_func(config_db):
global stop_listen_thread
pubsub = config_db.get_redis_client(config_db.db_name).pubsub()
pubsub.psubscribe("__keyspace@{}__:*".format(
config_db.get_dbid(config_db.db_name)))
time.sleep(2)
while True:
if stop_listen_thread:
break
item = pubsub.listen_message()
if 'type' in item and item['type'] == 'pmessage':
key = item['channel'].split(':', 1)[1]
try:
(table, row) = key.split(config_db.TABLE_NAME_SEPARATOR, 1)
if table in config_db.handlers:
client = config_db.get_redis_client(config_db.db_name)
data = config_db.raw_to_typed(client.hgetall(key))
config_db._ConfigDBConnector__fire(table, row, data)
except ValueError:
pass # Ignore non table-formated redis entries
config_db = ConfigDBConnector()
config_db.connect(wait_for_init=False)
client = config_db.get_redis_client(config_db.CONFIG_DB)
client.flushdb()
config_db.subscribe(table_name,
lambda table, key, data: test_handler(key, data))
assert table_name in config_db.handlers
thread = Thread(target=listen_thread_func, args=(config_db, ))
thread.start()
time.sleep(5)
config_db.set_entry(table_name, test_key, test_data)
stop_listen_thread = True
thread.join()
assert output_data == test_data['field1']
config_db.unsubscribe(table_name)
assert table_name not in config_db.handlers
def remove_bindings(ctx):
"""Remove all Bindings for Dynamic configutation"""
config_db = ConfigDBConnector()
config_db.connect()
binding_table_name = 'NAT_BINDINGS'
binding_dict = config_db.get_table(binding_table_name)
if binding_dict:
for binding_key_name in binding_dict:
config_db.set_entry(binding_table_name, binding_key_name, None)
def test_ConfigDBConnector():
config_db = ConfigDBConnector()
config_db.connect(wait_for_init=False)
config_db.set_entry("TEST_PORT", "Ethernet111", {"alias": "etp1x"})
allconfig = config_db.get_config()
assert allconfig["TEST_PORT"]["Ethernet111"]["alias"] == "etp1x"
config_db.set_entry("TEST_PORT", "Ethernet111", {"mtu": "12345"})
allconfig = config_db.get_config()
assert "alias" not in allconfig["TEST_PORT"]["Ethernet111"]
assert allconfig["TEST_PORT"]["Ethernet111"]["mtu"] == "12345"
def remove_static_all(ctx):
"""Remove all Static related configutation"""
config_db = ConfigDBConnector()
config_db.connect()
tables = ['STATIC_NAT', 'STATIC_NAPT']
for table_name in tables:
table_dict = config_db.get_table(table_name)
if table_dict:
for table_key_name in table_dict:
config_db.set_entry(table_name, table_key_name, None)
def test_ConfigDBConnector():
config_db = ConfigDBConnector()
config_db.connect(wait_for_init=False)
config_db.get_redis_client(config_db.CONFIG_DB).flushdb()
config_db.set_entry("TEST_PORT", "Ethernet111", {"alias": "etp1x"})
allconfig = config_db.get_config()
assert allconfig["TEST_PORT"]["Ethernet111"]["alias"] == "etp1x"
config_db.set_entry("TEST_PORT", "Ethernet111", {"mtu": "12345"})
allconfig = config_db.get_config()
assert "alias" not in allconfig["TEST_PORT"]["Ethernet111"]
assert allconfig["TEST_PORT"]["Ethernet111"]["mtu"] == "12345"
config_db.delete_table("TEST_PORT")
allconfig = config_db.get_config()
assert len(allconfig) == 0
def add(address, retransmit, timeout, key, auth_type, auth_port, pri,
use_mgmt_vrf, source_interface):
"""Specify a RADIUS server"""
if key:
if len(key) > RADIUS_PASSKEY_MAX_LEN:
click.echo('--key: Maximum of %d chars can be configured' %
RADIUS_PASSKEY_MAX_LEN)
return
elif not is_secret(key):
click.echo('--key: ' + VALID_CHARS_MSG)
return
config_db = ConfigDBConnector()
config_db.connect()
old_data = config_db.get_table('RADIUS_SERVER')
if address in old_data:
click.echo('server %s already exists' % address)
return
if len(old_data) == RADIUS_MAXSERVERS:
click.echo('Maximum of %d can be configured' % RADIUS_MAXSERVERS)
else:
data = {'auth_port': str(auth_port), 'priority': pri}
if auth_type is not None:
data['auth_type'] = auth_type
if retransmit is not None:
data['retransmit'] = str(retransmit)
if timeout is not None:
data['timeout'] = str(timeout)
if key is not None:
data['passkey'] = key
if use_mgmt_vrf:
data['vrf'] = "mgmt"
if source_interface:
if (source_interface.startswith("Ethernet") or \
source_interface.startswith("PortChannel") or \
source_interface.startswith("Vlan") or \
source_interface.startswith("Loopback") or \
source_interface == "eth0"):
data['src_intf'] = source_interface
else:
click.echo(
'Not supported interface name (valid interface name: Etherent<id>/PortChannel<id>/Vlan<id>/Loopback<id>/eth0)'
)
config_db.set_entry('RADIUS_SERVER', address, data)
def test_ConfigDBFlush():
config_db = ConfigDBConnector()
config_db.connect(wait_for_init=False)
config_db.set_entry("TEST_PORT", "Ethernet111", {"alias": "etp1x"})
client = config_db.get_redis_client(config_db.CONFIG_DB)
assert ConfigDBConnector.INIT_INDICATOR == "CONFIG_DB_INITIALIZED"
assert config_db.INIT_INDICATOR == "CONFIG_DB_INITIALIZED"
suc = client.set(config_db.INIT_INDICATOR, 1)
assert suc
# TODO: redis.get is not yet supported
# indicator = client.get(config_db.INIT_INDICATOR)
# assert indicator == '1'
client.flushdb()
allconfig = config_db.get_config()
assert len(allconfig) == 0
def test_ConfigDBConnectorSeparator():
db = swsscommon.DBConnector("APPL_DB", 0, True)
config_db = ConfigDBConnector()
config_db.db_connect("APPL_DB", False, False)
config_db.get_redis_client(config_db.APPL_DB).flushdb()
config_db.set_entry("TEST_PORT", "Ethernet222", {"alias": "etp2x"})
db.set("ItemWithoutSeparator", "item11")
allconfig = config_db.get_config()
assert "TEST_PORT" in allconfig
assert "ItemWithoutSeparator" not in allconfig
alltable = config_db.get_table("*")
assert "Ethernet222" in alltable
config_db.delete_table("TEST_PORT")
db.delete("ItemWithoutSeparator")
allconfig = config_db.get_config()
assert len(allconfig) == 0
def remove_interfaces(ctx):
"""Remove all interface related NAT configuration"""
config_db = ConfigDBConnector()
config_db.connect()
tables = [
'INTERFACE', 'PORTCHANNEL_INTERFACE', 'VLAN_INTERFACE',
'LOOPBACK_INTERFACE'
]
nat_config = {"nat_zone": "0"}
for table_name in tables:
table_dict = config_db.get_table(table_name)
if table_dict:
for table_key_name in table_dict:
if isinstance(table_key_name, str) is False:
continue
config_db.set_entry(table_name, table_key_name, nat_config)
def remove_binding(ctx, binding_name):
"""Remove Binding for Dynamic NAT-related configutation"""
entryFound = False
table = 'NAT_BINDINGS'
key = binding_name
if len(binding_name) > 32:
ctx.fail(
"Invalid binding name. Maximum allowed binding name is 32 characters !!"
)
config_db = ConfigDBConnector()
config_db.connect()
data = config_db.get_entry(table, key)
if not data:
click.echo("Trying to delete binding, which is not present.")
entryFound = True
if entryFound == False:
config_db.set_entry(table, key, None)
def remove_pools(ctx):
"""Remove all Pools for Dynamic configutation"""
config_db = ConfigDBConnector()
config_db.connect()
entryFound = False
pool_table_name = 'NAT_POOL'
binding_table_name = 'NAT_BINDINGS'
binding_dict = config_db.get_table(binding_table_name)
pool_dict = config_db.get_table(pool_table_name)
if pool_dict:
for pool_key_name in pool_dict:
entryFound = False
for binding_name, binding_values in binding_dict.items():
if binding_values['nat_pool'] == pool_key_name:
click.echo(
"Pool {} is not removed, as it is mapped to Binding {}, remove the pool binding first !!"
.format(pool_key_name, binding_name))
entryFound = True
break
if entryFound == False:
config_db.set_entry(pool_table_name, pool_key_name, None)
def add_binding(ctx, binding_name, pool_name, acl_name, nat_type,
twice_nat_id):
"""Add Binding for Dynamic NAT-related configutation"""
entryFound = False
table = 'NAT_BINDINGS'
key = binding_name
dataKey1 = 'access_list'
dataKey2 = 'nat_pool'
dataKey3 = 'nat_type'
dataKey4 = 'twice_nat_id'
if acl_name is None:
acl_name = ""
if len(binding_name) > 32:
ctx.fail(
"Invalid binding name. Maximum allowed binding name is 32 characters !!"
)
config_db = ConfigDBConnector()
config_db.connect()
data = config_db.get_entry(table, key)
if data:
if data[dataKey1] == acl_name and data[dataKey2] == pool_name:
click.echo("Trying to add binding, which is already present.")
entryFound = True
binding_dict = config_db.get_table(table)
if len(binding_dict) == 16:
click.echo(
"Failed to add binding, as already reached maximum binding limit 16."
)
entryFound = True
if nat_type is not None:
if nat_type == "dnat":
click.echo("Ignored, DNAT is not yet suported for Binding ")
entryFound = True
else:
nat_type = "snat"
if twice_nat_id is None:
twice_nat_id = "NULL"
if entryFound is False:
count = 0
if twice_nat_id is not None:
count = getTwiceNatIdCountWithStaticEntries(
twice_nat_id, 'STATIC_NAT', count)
count = getTwiceNatIdCountWithStaticEntries(
twice_nat_id, 'STATIC_NAPT', count)
count = getTwiceNatIdCountWithDynamicBinding(
twice_nat_id, count, key)
if count > 1:
ctx.fail(
"Same Twice nat id is not allowed for more than 2 entries!!"
)
config_db.set_entry(
table, key, {
dataKey1: acl_name,
dataKey2: pool_name,
dataKey3: nat_type,
dataKey4: twice_nat_id
})
def thread_coming_entry():
# Note: use a local constructed ConfigDBConnector, and do not reuse Redis connection across threads
config_db = ConfigDBConnector()
config_db.connect(wait_for_init=False)
time.sleep(5)
config_db.set_entry(table_name, test_key, test_data)
class DBMigrator():
def __init__(self, namespace, socket=None):
"""
Version string format:
version_<major>_<minor>_<build>
major: starting from 1, sequentially incrementing in master
branch.
minor: in github branches, minor version stays in 0. This minor
version creates space for private branches derived from
github public branches. These private branches shall use
none-zero values.
build: sequentially increase within a minor version domain.
"""
self.CURRENT_VERSION = 'version_2_0_4'
self.TABLE_NAME = 'VERSIONS'
self.TABLE_KEY = 'DATABASE'
self.TABLE_FIELD = 'VERSION'
db_kwargs = {}
if socket:
db_kwargs['unix_socket_path'] = socket
if namespace is None:
self.configDB = ConfigDBConnector(**db_kwargs)
else:
self.configDB = ConfigDBConnector(use_unix_socket_path=True,
namespace=namespace,
**db_kwargs)
self.configDB.db_connect('CONFIG_DB')
if namespace is None:
self.appDB = ConfigDBConnector(**db_kwargs)
else:
self.appDB = ConfigDBConnector(use_unix_socket_path=True,
namespace=namespace,
**db_kwargs)
self.appDB.db_connect('APPL_DB')
self.stateDB = SonicV2Connector(host='127.0.0.1')
if self.stateDB is not None:
self.stateDB.connect(self.stateDB.STATE_DB)
version_info = device_info.get_sonic_version_info()
asic_type = version_info.get('asic_type')
self.asic_type = asic_type
if asic_type == "mellanox":
from mellanox_buffer_migrator import MellanoxBufferMigrator
self.mellanox_buffer_migrator = MellanoxBufferMigrator(
self.configDB, self.appDB, self.stateDB)
def migrate_pfc_wd_table(self):
'''
Migrate all data entries from table PFC_WD_TABLE to PFC_WD
'''
data = self.configDB.get_table('PFC_WD_TABLE')
for key in data:
self.configDB.set_entry('PFC_WD', key, data[key])
self.configDB.delete_table('PFC_WD_TABLE')
def is_ip_prefix_in_key(self, key):
'''
Function to check if IP address is present in the key. If it
is present, then the key would be a tuple or else, it shall be
be string
'''
return (isinstance(key, tuple))
def migrate_interface_table(self):
'''
Migrate all data from existing INTERFACE table with IP Prefix
to have an additional ONE entry without IP Prefix. For. e.g, for an entry
"Vlan1000|192.168.0.1/21": {}", this function shall add an entry without
IP prefix as ""Vlan1000": {}". This is for VRF compatibility.
'''
if_db = []
if_tables = {
'INTERFACE', 'PORTCHANNEL_INTERFACE', 'VLAN_INTERFACE',
'LOOPBACK_INTERFACE'
}
for table in if_tables:
data = self.configDB.get_table(table)
for key in data:
if not self.is_ip_prefix_in_key(key):
if_db.append(key)
continue
for table in if_tables:
data = self.configDB.get_table(table)
for key in data:
if not self.is_ip_prefix_in_key(key) or key[0] in if_db:
continue
log.log_info('Migrating interface table for ' + key[0])
self.configDB.set_entry(table, key[0], data[key])
if_db.append(key[0])
def migrate_intf_table(self):
'''
Migrate all data from existing INTF table in APP DB during warmboot with IP Prefix
to have an additional ONE entry without IP Prefix. For. e.g, for an entry
"Vlan1000:192.168.0.1/21": {}", this function shall add an entry without
IP prefix as ""Vlan1000": {}". This also migrates 'lo' to 'Loopback0' interface
'''
if self.appDB is None:
return
data = self.appDB.keys(self.appDB.APPL_DB, "INTF_TABLE:*")
if data is None:
return
if_db = []
for key in data:
if_name = key.split(":")[1]
if if_name == "lo":
self.appDB.delete(self.appDB.APPL_DB, key)
key = key.replace(if_name, "Loopback0")
log.log_info('Migrating lo entry to ' + key)
self.appDB.set(self.appDB.APPL_DB, key, 'NULL', 'NULL')
if '/' not in key:
if_db.append(key.split(":")[1])
continue
data = self.appDB.keys(self.appDB.APPL_DB, "INTF_TABLE:*")
for key in data:
if_name = key.split(":")[1]
if if_name in if_db:
continue
log.log_info('Migrating intf table for ' + if_name)
table = "INTF_TABLE:" + if_name
self.appDB.set(self.appDB.APPL_DB, table, 'NULL', 'NULL')
if_db.append(if_name)
def migrate_copp_table(self):
'''
Delete the existing COPP table
'''
if self.appDB is None:
return
keys = self.appDB.keys(self.appDB.APPL_DB, "COPP_TABLE:*")
if keys is None:
return
for copp_key in keys:
self.appDB.delete(self.appDB.APPL_DB, copp_key)
def migrate_feature_table(self):
'''
Combine CONTAINER_FEATURE and FEATURE tables into FEATURE table.
'''
feature_table = self.configDB.get_table('FEATURE')
for feature, config in feature_table.items():
state = config.get('status')
if state is not None:
config['state'] = state
config.pop('status')
self.configDB.set_entry('FEATURE', feature, config)
container_feature_table = self.configDB.get_table('CONTAINER_FEATURE')
for feature, config in container_feature_table.items():
self.configDB.mod_entry('FEATURE', feature, config)
self.configDB.set_entry('CONTAINER_FEATURE', feature, None)
def migrate_config_db_buffer_tables_for_dynamic_calculation(
self, speed_list, cable_len_list, default_dynamic_th,
abandon_method, append_item_method):
'''
Migrate buffer tables to dynamic calculation mode
parameters
@speed_list - list of speed supported
@cable_len_list - list of cable length supported
@default_dynamic_th - default dynamic th
@abandon_method - a function which is called to abandon the migration and keep the current configuration
if the current one doesn't match the default one
@append_item_method - a function which is called to append an item to the list of pending commit items
any update to buffer configuration will be pended and won't be applied until
all configuration is checked and aligns with the default one
1. Buffer profiles for lossless PGs in BUFFER_PROFILE table will be removed
if their names have the convention of pg_lossless_<speed>_<cable_length>_profile
where the speed and cable_length belongs speed_list and cable_len_list respectively
and the dynamic_th is equal to default_dynamic_th
2. Insert tables required for dynamic buffer calculation
- DEFAULT_LOSSLESS_BUFFER_PARAMETER|AZURE: {'default_dynamic_th': default_dynamic_th}
- LOSSLESS_TRAFFIC_PATTERN|AZURE: {'mtu': '1024', 'small_packet_percentage': '100'}
3. For lossless dynamic PGs, remove the explicit referencing buffer profiles
Before: BUFFER_PG|<port>|3-4: {'profile': 'BUFFER_PROFILE|pg_lossless_<speed>_<cable_length>_profile'}
After: BUFFER_PG|<port>|3-4: {'profile': 'NULL'}
'''
# Migrate BUFFER_PROFILEs, removing dynamically generated profiles
dynamic_profile = self.configDB.get_table('BUFFER_PROFILE')
profile_pattern = 'pg_lossless_([1-9][0-9]*000)_([1-9][0-9]*m)_profile'
for name, info in dynamic_profile.items():
m = re.search(profile_pattern, name)
if not m:
continue
speed = m.group(1)
cable_length = m.group(2)
if speed in speed_list and cable_length in cable_len_list:
append_item_method(('BUFFER_PROFILE', name, None))
log.log_info(
"Lossless profile {} has been removed".format(name))
# Migrate BUFFER_PGs, removing the explicit designated profiles
buffer_pgs = self.configDB.get_table('BUFFER_PG')
ports = self.configDB.get_table('PORT')
all_cable_lengths = self.configDB.get_table('CABLE_LENGTH')
if not buffer_pgs or not ports or not all_cable_lengths:
log.log_notice(
"At lease one of tables BUFFER_PG, PORT and CABLE_LENGTH hasn't been defined, skip following migration"
)
abandon_method()
return True
cable_lengths = all_cable_lengths[list(all_cable_lengths.keys())[0]]
for name, profile in buffer_pgs.items():
# do the db migration
try:
port, pg = name
profile_name = profile['profile'][1:-1].split('|')[1]
if pg == '0':
if profile_name != 'ingress_lossy_profile':
log.log_notice(
"BUFFER_PG table entry {} has non default profile {} configured"
.format(name, profile_name))
abandon_method()
return True
else:
continue
elif pg != '3-4':
log.log_notice(
"BUFFER_PG table entry {} isn't default PG(0 or 3-4)".
format(name))
abandon_method()
return True
m = re.search(profile_pattern, profile_name)
if not m:
log.log_notice(
"BUFFER_PG table entry {} has non-default profile name {}"
.format(name, profile_name))
abandon_method()
return True
speed = m.group(1)
cable_length = m.group(2)
if speed == ports[port][
'speed'] and cable_length == cable_lengths[port]:
append_item_method(('BUFFER_PG', name, {
'profile': 'NULL'
}))
else:
log.log_notice(
"Lossless PG profile {} for port {} doesn't match its speed {} or cable length {}, keep using traditional buffer calculation mode"
.format(profile_name, port, speed, cable_length))
abandon_method()
return True
except Exception:
log.log_notice("Exception occured during parsing the profiles")
abandon_method()
return True
# Insert other tables required for dynamic buffer calculation
metadata = self.configDB.get_entry('DEVICE_METADATA', 'localhost')
metadata['buffer_model'] = 'dynamic'
append_item_method(('DEVICE_METADATA', 'localhost', metadata))
append_item_method(('DEFAULT_LOSSLESS_BUFFER_PARAMETER', 'AZURE', {
'default_dynamic_th': default_dynamic_th
}))
append_item_method(('LOSSLESS_TRAFFIC_PATTERN', 'AZURE', {
'mtu': '1024',
'small_packet_percentage': '100'
}))
return True
def prepare_dynamic_buffer_for_warm_reboot(self,
buffer_pools=None,
buffer_profiles=None,
buffer_pgs=None):
'''
This is the very first warm reboot of buffermgrd (dynamic) if the system reboot from old image by warm-reboot
In this case steps need to be taken to get buffermgrd prepared (for warm reboot)
During warm reboot, buffer tables should be installed in the first place.
However, it isn't able to achieve that when system is warm-rebooted from an old image
without dynamic buffer supported, because the buffer info wasn't in the APPL_DB in the old image.
The solution is to copy that info from CONFIG_DB into APPL_DB in db_migrator.
During warm-reboot, db_migrator adjusts buffer info in CONFIG_DB by removing some fields
according to requirement from dynamic buffer calculation.
The buffer info before that adjustment needs to be copied to APPL_DB.
1. set WARM_RESTART_TABLE|buffermgrd as {restore_count: 0}
2. Copy the following tables from CONFIG_DB into APPL_DB in case of warm reboot
The separator in fields that reference objects in other table needs to be updated from '|' to ':'
- BUFFER_POOL
- BUFFER_PROFILE, separator updated for field 'pool'
- BUFFER_PG, separator updated for field 'profile'
- BUFFER_QUEUE, separator updated for field 'profile
- BUFFER_PORT_INGRESS_PROFILE_LIST, separator updated for field 'profile_list'
- BUFFER_PORT_EGRESS_PROFILE_LIST, separator updated for field 'profile_list'
'''
warmreboot_state = self.stateDB.get(
self.stateDB.STATE_DB, 'WARM_RESTART_ENABLE_TABLE|system',
'enable')
mmu_size = self.stateDB.get(self.stateDB.STATE_DB,
'BUFFER_MAX_PARAM_TABLE|global',
'mmu_size')
if warmreboot_state == 'true' and not mmu_size:
log.log_notice(
"This is the very first run of buffermgrd (dynamic), prepare info required from warm reboot"
)
else:
return True
buffer_table_list = [
('BUFFER_POOL', buffer_pools, None),
('BUFFER_PROFILE', buffer_profiles, 'pool'),
('BUFFER_PG', buffer_pgs, 'profile'),
('BUFFER_QUEUE', None, 'profile'),
('BUFFER_PORT_INGRESS_PROFILE_LIST', None, 'profile_list'),
('BUFFER_PORT_EGRESS_PROFILE_LIST', None, 'profile_list')
]
for pair in buffer_table_list:
keys_copied = []
keys_ignored = []
table_name, entries, reference_field_name = pair
app_table_name = table_name + "_TABLE"
if not entries:
entries = self.configDB.get_table(table_name)
for key, items in entries.items():
# copy items to appl db
if reference_field_name:
confdb_ref = items.get(reference_field_name)
if not confdb_ref or confdb_ref == "NULL":
keys_ignored.append(key)
continue
items_referenced = confdb_ref.split(',')
appdb_ref = ""
first_item = True
for item in items_referenced:
if first_item:
first_item = False
else:
appdb_ref += ','
subitems = item.split('|')
first_key = True
for subitem in subitems:
if first_key:
appdb_ref += subitem + '_TABLE'
first_key = False
else:
appdb_ref += ':' + subitem
items[reference_field_name] = appdb_ref
keys_copied.append(key)
if type(key) is tuple:
appl_db_key = app_table_name + ':' + ':'.join(key)
else:
appl_db_key = app_table_name + ':' + key
for field, data in items.items():
self.appDB.set(self.appDB.APPL_DB, appl_db_key, field,
data)
if keys_copied:
log.log_info(
"The following items in table {} in CONFIG_DB have been copied to APPL_DB: {}"
.format(table_name, keys_copied))
if keys_ignored:
log.log_info(
"The following items in table {} in CONFIG_DB have been ignored: {}"
.format(table_name, keys_copied))
return True
def migrate_config_db_port_table_for_auto_neg(self):
table_name = 'PORT'
port_table = self.configDB.get_table(table_name)
for key, value in port_table.items():
if 'autoneg' in value:
if value['autoneg'] == '1':
self.configDB.set(self.configDB.CONFIG_DB,
'{}|{}'.format(table_name,
key), 'autoneg', 'on')
if 'speed' in value and 'adv_speeds' not in value:
self.configDB.set(self.configDB.CONFIG_DB,
'{}|{}'.format(table_name, key),
'adv_speeds', value['speed'])
elif value['autoneg'] == '0':
self.configDB.set(self.configDB.CONFIG_DB,
'{}|{}'.format(table_name,
key), 'autoneg', 'off')
def migrate_qos_db_fieldval_reference_remove(self, table_list, db, db_num,
db_delimeter):
for pair in table_list:
table_name, fields_list = pair
qos_table = db.get_table(table_name)
for key, value in qos_table.items():
if type(key) is tuple:
db_key = table_name + db_delimeter + db_delimeter.join(key)
else:
db_key = table_name + db_delimeter + key
for field in fields_list:
if field in value:
fieldVal = value.get(field)
if not fieldVal or fieldVal == "NULL":
continue
newFiledVal = ""
# Check for ABNF format presence and convert ABNF to string
if "[" in fieldVal and db_delimeter in fieldVal and "]" in fieldVal:
log.log_info(
"Found ABNF format field value in table {} key {} field {} val {}"
.format(table_name, db_key, field, fieldVal))
value_list = fieldVal.split(",")
for item in value_list:
if "[" != item[
0] or db_delimeter not in item or "]" != item[
-1]:
continue
newFiledVal = newFiledVal + item[1:-1].split(
db_delimeter)[1] + ','
newFiledVal = newFiledVal[:-1]
db.set(db_num, db_key, field, newFiledVal)
log.log_info(
"Modified ABNF format field value to string in table {} key {} field {} val {}"
.format(table_name, db_key, field,
newFiledVal))
return True
def migrate_qos_fieldval_reference_format(self):
'''
This is to change for first time to remove field refernces of ABNF format
in APPL DB for warm boot.
i.e "[Tabale_name:name]" to string in APPL_DB. Reasons for doing this
- To consistent with all other SoNIC CONFIG_DB/APPL_DB tables and fields
- References in DB is not required, this will be taken care by YANG model leafref.
'''
qos_app_table_list = [
('BUFFER_PG_TABLE', ['profile']),
('BUFFER_QUEUE_TABLE', ['profile']),
('BUFFER_PROFILE_TABLE', ['pool']),
('BUFFER_PORT_INGRESS_PROFILE_LIST_TABLE', ['profile_list']),
('BUFFER_PORT_EGRESS_PROFILE_LIST_TABLE', ['profile_list'])
]
log.log_info("Remove APPL_DB QOS tables field reference ABNF format")
self.migrate_qos_db_fieldval_reference_remove(qos_app_table_list,
self.appDB,
self.appDB.APPL_DB, ':')
qos_table_list = [
('QUEUE', ['scheduler', 'wred_profile']),
('PORT_QOS_MAP', [
'dscp_to_tc_map', 'dot1p_to_tc_map', 'pfc_to_queue_map',
'tc_to_pg_map', 'tc_to_queue_map', 'pfc_to_pg_map'
]), ('BUFFER_PG', ['profile']), ('BUFFER_QUEUE', ['profile']),
('BUFFER_PROFILE', ['pool']),
('BUFFER_PORT_INGRESS_PROFILE_LIST', ['profile_list']),
('BUFFER_PORT_EGRESS_PROFILE_LIST', ['profile_list'])
]
log.log_info("Remove CONFIG_DB QOS tables field reference ABNF format")
self.migrate_qos_db_fieldval_reference_remove(qos_table_list,
self.configDB,
self.configDB.CONFIG_DB,
'|')
return True
def version_unknown(self):
"""
version_unknown tracks all SONiC versions that doesn't have a version
string defined in config_DB.
Nothing can be assumped when migrating from this version to the next
version.
Any migration operation needs to test if the DB is in expected format
before migrating date to the next version.
"""
log.log_info('Handling version_unknown')
# NOTE: Uncomment next 3 lines of code when the migration code is in
# place. Note that returning specific string is intentional,
# here we only intended to migrade to DB version 1.0.1.
# If new DB version is added in the future, the incremental
# upgrade will take care of the subsequent migrations.
self.migrate_pfc_wd_table()
self.migrate_interface_table()
self.migrate_intf_table()
self.set_version('version_1_0_2')
return 'version_1_0_2'
def version_1_0_1(self):
"""
Version 1_0_1.
"""
log.log_info('Handling version_1_0_1')
self.migrate_interface_table()
self.migrate_intf_table()
self.set_version('version_1_0_2')
return 'version_1_0_2'
def version_1_0_2(self):
"""
Version 1_0_2.
"""
log.log_info('Handling version_1_0_2')
# Check ASIC type, if Mellanox platform then need DB migration
if self.asic_type == "mellanox":
if self.mellanox_buffer_migrator.mlnx_migrate_buffer_pool_size('version_1_0_2', 'version_1_0_3') \
and self.mellanox_buffer_migrator.mlnx_flush_new_buffer_configuration():
self.set_version('version_1_0_3')
else:
self.set_version('version_1_0_3')
return 'version_1_0_3'
def version_1_0_3(self):
"""
Version 1_0_3.
"""
log.log_info('Handling version_1_0_3')
self.migrate_feature_table()
# Check ASIC type, if Mellanox platform then need DB migration
if self.asic_type == "mellanox":
if self.mellanox_buffer_migrator.mlnx_migrate_buffer_pool_size('version_1_0_3', 'version_1_0_4') \
and self.mellanox_buffer_migrator.mlnx_migrate_buffer_profile('version_1_0_3', 'version_1_0_4') \
and self.mellanox_buffer_migrator.mlnx_flush_new_buffer_configuration():
self.set_version('version_1_0_4')
else:
self.set_version('version_1_0_4')
return 'version_1_0_4'
def version_1_0_4(self):
"""
Version 1_0_4.
"""
log.log_info('Handling version_1_0_4')
# Check ASIC type, if Mellanox platform then need DB migration
if self.asic_type == "mellanox":
if self.mellanox_buffer_migrator.mlnx_migrate_buffer_pool_size('version_1_0_4', 'version_1_0_5') \
and self.mellanox_buffer_migrator.mlnx_migrate_buffer_profile('version_1_0_4', 'version_1_0_5') \
and self.mellanox_buffer_migrator.mlnx_flush_new_buffer_configuration():
self.set_version('version_1_0_5')
else:
self.set_version('version_1_0_5')
return 'version_1_0_5'
def version_1_0_5(self):
"""
Version 1_0_5.
"""
log.log_info('Handling version_1_0_5')
# Check ASIC type, if Mellanox platform then need DB migration
if self.asic_type == "mellanox":
if self.mellanox_buffer_migrator.mlnx_migrate_buffer_pool_size('version_1_0_5', 'version_1_0_6') \
and self.mellanox_buffer_migrator.mlnx_migrate_buffer_profile('version_1_0_5', 'version_1_0_6') \
and self.mellanox_buffer_migrator.mlnx_flush_new_buffer_configuration():
self.set_version('version_1_0_6')
else:
self.set_version('version_1_0_6')
return 'version_1_0_6'
def version_1_0_6(self):
"""
Version 1_0_6.
"""
log.log_info('Handling version_1_0_6')
if self.asic_type == "mellanox":
speed_list = self.mellanox_buffer_migrator.default_speed_list
cable_len_list = self.mellanox_buffer_migrator.default_cable_len_list
buffer_pools = self.configDB.get_table('BUFFER_POOL')
buffer_profiles = self.configDB.get_table('BUFFER_PROFILE')
buffer_pgs = self.configDB.get_table('BUFFER_PG')
abandon_method = self.mellanox_buffer_migrator.mlnx_abandon_pending_buffer_configuration
append_method = self.mellanox_buffer_migrator.mlnx_append_item_on_pending_configuration_list
if self.mellanox_buffer_migrator.mlnx_migrate_buffer_pool_size('version_1_0_6', 'version_2_0_0') \
and self.mellanox_buffer_migrator.mlnx_migrate_buffer_profile('version_1_0_6', 'version_2_0_0') \
and (not self.mellanox_buffer_migrator.mlnx_is_buffer_model_dynamic() or \
self.migrate_config_db_buffer_tables_for_dynamic_calculation(speed_list, cable_len_list, '0', abandon_method, append_method)) \
and self.mellanox_buffer_migrator.mlnx_flush_new_buffer_configuration() \
and self.prepare_dynamic_buffer_for_warm_reboot(buffer_pools, buffer_profiles, buffer_pgs):
self.set_version('version_2_0_0')
else:
self.prepare_dynamic_buffer_for_warm_reboot()
metadata = self.configDB.get_entry('DEVICE_METADATA', 'localhost')
metadata['buffer_model'] = 'traditional'
self.configDB.set_entry('DEVICE_METADATA', 'localhost', metadata)
log.log_notice('Setting buffer_model to traditional')
self.set_version('version_2_0_0')
return 'version_2_0_0'
def version_2_0_0(self):
"""
Version 2_0_0.
"""
log.log_info('Handling version_2_0_0')
self.migrate_config_db_port_table_for_auto_neg()
self.set_version('version_2_0_1')
return 'version_2_0_1'
def version_2_0_1(self):
"""
Version 2_0_1.
"""
log.log_info('Handling version_2_0_1')
warmreboot_state = self.stateDB.get(
self.stateDB.STATE_DB, 'WARM_RESTART_ENABLE_TABLE|system',
'enable')
if warmreboot_state != 'true':
portchannel_table = self.configDB.get_table('PORTCHANNEL')
for name, data in portchannel_table.items():
data['lacp_key'] = 'auto'
self.configDB.set_entry('PORTCHANNEL', name, data)
self.set_version('version_2_0_2')
return 'version_2_0_2'
def version_2_0_2(self):
"""
Version 2_0_2.
"""
log.log_info('Handling version_2_0_2')
self.migrate_qos_fieldval_reference_format()
self.set_version('version_2_0_3')
return 'version_2_0_3'
def version_2_0_3(self):
"""
Version 2_0_3
"""
log.log_info('Handling version_2_0_3')
if self.asic_type == "mellanox":
self.mellanox_buffer_migrator.mlnx_reclaiming_unused_buffer()
self.set_version('version_2_0_4')
return 'version_2_0_4'
def version_2_0_4(self):
"""
Current latest version. Nothing to do here.
"""
log.log_info('Handling version_2_0_4')
return None
def get_version(self):
version = self.configDB.get_entry(self.TABLE_NAME, self.TABLE_KEY)
if version and version[self.TABLE_FIELD]:
return version[self.TABLE_FIELD]
return 'version_unknown'
def set_version(self, version=None):
if not version:
version = self.CURRENT_VERSION
log.log_info('Setting version to ' + version)
entry = {self.TABLE_FIELD: version}
self.configDB.set_entry(self.TABLE_NAME, self.TABLE_KEY, entry)
def common_migration_ops(self):
try:
with open(INIT_CFG_FILE) as f:
init_db = json.load(f)
except Exception as e:
raise Exception(str(e))
for init_cfg_table, table_val in init_db.items():
log.log_info(
"Migrating table {} from INIT_CFG to config_db".format(
init_cfg_table))
for key in table_val:
curr_cfg = self.configDB.get_entry(init_cfg_table, key)
init_cfg = table_val[key]
# Override init config with current config.
# This will leave new fields from init_config
# in new_config, but not override existing configuration.
new_cfg = {**init_cfg, **curr_cfg}
self.configDB.set_entry(init_cfg_table, key, new_cfg)
self.migrate_copp_table()
def migrate(self):
version = self.get_version()
log.log_info('Upgrading from version ' + version)
while version:
next_version = getattr(self, version)()
if next_version == version:
raise Exception(
'Version migrate from %s stuck in same version' % version)
version = next_version
# Perform common migration ops
self.common_migration_ops()
def delete(address):
"""Delete a RADIUS server"""
config_db = ConfigDBConnector()
config_db.connect()
config_db.set_entry('RADIUS_SERVER', address, None)
def add_udp(ctx, global_ip, global_port, local_ip, local_port, nat_type,
twice_nat_id):
"""Add Static UDP Protocol NAPT-related configutation"""
# Verify the ip address format
if is_valid_ipv4_address(local_ip) is False:
ctx.fail(
"Given local ip address {} is invalid. Please enter a valid local ip address !!"
.format(local_ip))
if is_valid_ipv4_address(global_ip) is False:
ctx.fail(
"Given global ip address {} is invalid. Please enter a valid global ip address !!"
.format(global_ip))
config_db = ConfigDBConnector()
config_db.connect()
entryFound = False
table = "STATIC_NAPT"
key = "{}|UDP|{}".format(global_ip, global_port)
dataKey1 = 'local_ip'
dataKey2 = 'local_port'
dataKey3 = 'nat_type'
dataKey4 = 'twice_nat_id'
data = config_db.get_entry(table, key)
if data:
if data[dataKey1] == local_ip and data[dataKey2] == str(local_port):
click.echo(
"Trying to add static napt entry, which is already present.")
entryFound = True
if nat_type == 'snat':
ipAddress = local_ip
else:
ipAddress = global_ip
if isIpOverlappingWithAnyStaticEntry(ipAddress, 'STATIC_NAT') is True:
ctx.fail("Given entry is overlapping with existing NAT entry !!")
if entryFound is False:
counters_db = SonicV2Connector()
counters_db.connect(counters_db.COUNTERS_DB)
snat_entries = 0
max_entries = 0
exists = counters_db.exists(counters_db.COUNTERS_DB,
'COUNTERS_GLOBAL_NAT:Values')
if exists:
counter_entry = counters_db.get_all(counters_db.COUNTERS_DB,
'COUNTERS_GLOBAL_NAT:Values')
if 'SNAT_ENTRIES' in counter_entry:
snat_entries = counter_entry['SNAT_ENTRIES']
if 'MAX_NAT_ENTRIES' in counter_entry:
max_entries = counter_entry['MAX_NAT_ENTRIES']
if int(snat_entries) >= int(max_entries):
click.echo(
"Max limit is reached for NAT entries, skipping adding the entry."
)
entryFound = True
if entryFound is False:
count = 0
if twice_nat_id is not None:
count = getTwiceNatIdCountWithStaticEntries(
twice_nat_id, table, count)
count = getTwiceNatIdCountWithDynamicBinding(
twice_nat_id, count, None)
if count > 1:
ctx.fail(
"Same Twice nat id is not allowed for more than 2 entries!!"
)
if nat_type is not None and twice_nat_id is not None:
config_db.set_entry(
table, key, {
dataKey1: local_ip,
dataKey2: local_port,
dataKey3: nat_type,
dataKey4: twice_nat_id
})
elif nat_type is not None:
config_db.set_entry(table, key, {
dataKey1: local_ip,
dataKey2: local_port,
dataKey3: nat_type
})
elif twice_nat_id is not None:
config_db.set_entry(table, key, {
dataKey1: local_ip,
dataKey2: local_port,
dataKey4: twice_nat_id
})
else:
config_db.set_entry(table, key, {
dataKey1: local_ip,
dataKey2: local_port
})
class AclLoader(object):
ACL_TABLE = "ACL_TABLE"
ACL_RULE = "ACL_RULE"
ACL_TABLE_TYPE_MIRROR = "MIRROR"
ACL_TABLE_TYPE_CTRLPLANE = "CTRLPLANE"
CFG_MIRROR_SESSION_TABLE = "MIRROR_SESSION"
STATE_MIRROR_SESSION_TABLE = "MIRROR_SESSION_TABLE"
POLICER = "POLICER"
SESSION_PREFIX = "everflow"
SWITCH_CAPABILITY_TABLE = "SWITCH_CAPABILITY"
ACL_ACTIONS_CAPABILITY_FIELD = "ACL_ACTIONS"
ACL_ACTION_CAPABILITY_FIELD = "ACL_ACTION"
min_priority = 1
max_priority = 10000
ethertype_map = {
"ETHERTYPE_LLDP": 0x88CC,
"ETHERTYPE_VLAN": 0x8100,
"ETHERTYPE_ROCE": 0x8915,
"ETHERTYPE_ARP": 0x0806,
"ETHERTYPE_IPV4": 0x0800,
"ETHERTYPE_IPV6": 0x86DD,
"ETHERTYPE_MPLS": 0x8847
}
ip_protocol_map = {
"IP_TCP": 6,
"IP_ICMP": 1,
"IP_UDP": 17,
"IP_IGMP": 2,
"IP_PIM": 103,
"IP_RSVP": 46,
"IP_GRE": 47,
"IP_AUTH": 51,
"IP_ICMPV6": 58,
"IP_L2TP": 115
}
def __init__(self):
self.yang_acl = None
self.requested_session = None
self.mirror_stage = None
self.current_table = None
self.tables_db_info = {}
self.rules_db_info = {}
self.rules_info = {}
if multi_asic.is_multi_asic():
# Load global db config
SonicDBConfig.load_sonic_global_db_config()
else:
SonicDBConfig.initialize()
self.sessions_db_info = {}
self.configdb = ConfigDBConnector()
self.configdb.connect()
self.statedb = SonicV2Connector(host="127.0.0.1")
self.statedb.connect(self.statedb.STATE_DB)
# For multi-npu architecture we will have both global and per front asic namespace.
# Global namespace will be used for Control plane ACL which are via IPTables.
# Per ASIC namespace will be used for Data and Everflow ACL's.
# Global Configdb will have all ACL information for both Ctrl and Data/Evereflow ACL's
# and will be used as souurce of truth for ACL modification to config DB which will be done to both Global DB and
# front asic namespace
self.per_npu_configdb = {}
# State DB are used for to get mirror Session monitor port.
# For multi-npu platforms each asic namespace can have different monitor port
# dependinding on which route to session destination ip. So for multi-npu
# platforms we get state db for all front asic namespace in addition to
self.per_npu_statedb = {}
# Getting all front asic namespace and correspding config and state DB connector
namespaces = device_info.get_all_namespaces()
for front_asic_namespaces in namespaces['front_ns']:
self.per_npu_configdb[front_asic_namespaces] = ConfigDBConnector(
use_unix_socket_path=True, namespace=front_asic_namespaces)
self.per_npu_configdb[front_asic_namespaces].connect()
self.per_npu_statedb[front_asic_namespaces] = SonicV2Connector(
use_unix_socket_path=True, namespace=front_asic_namespaces)
self.per_npu_statedb[front_asic_namespaces].connect(
self.per_npu_statedb[front_asic_namespaces].STATE_DB)
self.read_tables_info()
self.read_rules_info()
self.read_sessions_info()
self.read_policers_info()
def read_tables_info(self):
"""
Read ACL_TABLE table from configuration database
:return:
"""
self.tables_db_info = self.configdb.get_table(self.ACL_TABLE)
def get_tables_db_info(self):
return self.tables_db_info
def read_rules_info(self):
"""
Read ACL_RULE table from configuration database
:return:
"""
self.rules_db_info = self.configdb.get_table(self.ACL_RULE)
def get_rules_db_info(self):
return self.rules_db_info
def read_policers_info(self):
"""
Read POLICER table from configuration database
:return:
"""
# For multi-npu platforms we will read from any one of front asic namespace
# config db as the information should be same across all config db
if self.per_npu_configdb:
namespace_configdb = list(self.per_npu_configdb.values())[0]
self.policers_db_info = namespace_configdb.get_table(self.POLICER)
else:
self.policers_db_info = self.configdb.get_table(self.POLICER)
def get_policers_db_info(self):
return self.policers_db_info
def read_sessions_info(self):
"""
Read MIRROR_SESSION table from configuration database
:return:
"""
# For multi-npu platforms we will read from any one of front asic namespace
# config db as the information should be same across all config db
if self.per_npu_configdb:
namespace_configdb = list(self.per_npu_configdb.values())[0]
self.sessions_db_info = namespace_configdb.get_table(
self.CFG_MIRROR_SESSION_TABLE)
else:
self.sessions_db_info = self.configdb.get_table(
self.CFG_MIRROR_SESSION_TABLE)
for key in self.sessions_db_info:
if self.per_npu_statedb:
# For multi-npu platforms we will read from all front asic name space
# statedb as the monitor port will be differnt for each asic
# and it's status also might be different (ideally should not happen)
# We will store them as dict of 'asic' : value
self.sessions_db_info[key]["status"] = {}
self.sessions_db_info[key]["monitor_port"] = {}
for namespace_key, namespace_statedb in self.per_npu_statedb.items(
):
state_db_info = namespace_statedb.get_all(
self.statedb.STATE_DB,
"{}|{}".format(self.STATE_MIRROR_SESSION_TABLE, key))
self.sessions_db_info[key]["status"][
namespace_key] = state_db_info.get(
"status", "inactive") if state_db_info else "error"
self.sessions_db_info[key][
"monitor_port"][namespace_key] = state_db_info.get(
"monitor_port", "") if state_db_info else ""
else:
state_db_info = self.statedb.get_all(
self.statedb.STATE_DB,
"{}|{}".format(self.STATE_MIRROR_SESSION_TABLE, key))
self.sessions_db_info[key]["status"] = state_db_info.get(
"status", "inactive") if state_db_info else "error"
self.sessions_db_info[key]["monitor_port"] = state_db_info.get(
"monitor_port", "") if state_db_info else ""
def get_sessions_db_info(self):
return self.sessions_db_info
def get_session_name(self):
"""
Get requested mirror session name or default session
:return: Mirror session name
"""
if self.requested_session:
return self.requested_session
for key in self.get_sessions_db_info():
if key.startswith(self.SESSION_PREFIX):
return key
return None
def set_table_name(self, table_name):
"""
Set table name to restrict the table to be modified
:param table_name: Table name
:return:
"""
if not self.is_table_valid(table_name):
warning("Table \"%s\" not found" % table_name)
self.current_table = table_name
def set_session_name(self, session_name):
"""
Set session name to be used in ACL rule action
:param session_name: Mirror session name
:return:
"""
if session_name not in self.get_sessions_db_info():
raise AclLoaderException("Session %s does not exist" %
session_name)
self.requested_session = session_name
def set_mirror_stage(self, stage):
"""
Set mirror stage to be used in ACL mirror rule action
:param session_name: stage 'ingress'/'egress'
:return:
"""
self.mirror_stage = stage.upper()
def set_max_priority(self, priority):
"""
Set rules max priority
:param priority: Rules max priority
:return:
"""
self.max_priority = int(priority)
def is_table_valid(self, tname):
return self.tables_db_info.get(tname)
def is_table_mirror(self, tname):
"""
Check if ACL table type is ACL_TABLE_TYPE_MIRROR or ACL_TABLE_TYPE_MIRRORV6
:param tname: ACL table name
:return: True if table type is MIRROR or MIRRORV6 else False
"""
return self.tables_db_info[tname]['type'].upper().startswith(
self.ACL_TABLE_TYPE_MIRROR)
def is_table_ipv6(self, tname):
"""
Check if ACL table type is IPv6 (L3V6 or MIRRORV6)
:param tname: ACL table name
:return: True if table type is IPv6 else False
"""
return self.tables_db_info[tname]["type"].upper() in ("L3V6",
"MIRRORV6")
def is_table_control_plane(self, tname):
"""
Check if ACL table type is ACL_TABLE_TYPE_CTRLPLANE
:param tname: ACL table name
:return: True if table type is ACL_TABLE_TYPE_CTRLPLANE else False
"""
return self.tables_db_info[tname]['type'].upper(
) == self.ACL_TABLE_TYPE_CTRLPLANE
@staticmethod
def parse_acl_json(filename):
yang_acl = pybindJSON.load(filename, openconfig_acl, "openconfig_acl")
# Check pybindJSON parsing
# pybindJSON.load will silently return an empty json object if input invalid
with open(filename, 'r') as f:
plain_json = json.load(f)
if len(plain_json['acl']['acl-sets']['acl-set']) != len(
yang_acl.acl.acl_sets.acl_set):
raise AclLoaderException("Invalid input file %s" % filename)
return yang_acl
def load_rules_from_file(self, filename):
"""
Load file with ACL rules configuration in openconfig ACL format. Convert rules
to Config DB schema.
:param filename: File in openconfig ACL format
:return:
"""
self.yang_acl = AclLoader.parse_acl_json(filename)
self.convert_rules()
def convert_action(self, table_name, rule_idx, rule):
rule_props = {}
if rule.actions.config.forwarding_action == "ACCEPT":
if self.is_table_control_plane(table_name):
rule_props[AclAction.PACKET] = PacketAction.ACCEPT
elif self.is_table_mirror(table_name):
session_name = self.get_session_name()
if not session_name:
raise AclLoaderException(
"Mirroring session does not exist")
if self.mirror_stage == Stage.INGRESS:
mirror_action = AclAction.MIRROR_INGRESS
elif self.mirror_stage == Stage.EGRESS:
mirror_action = AclAction.MIRROR_EGRESS
else:
raise AclLoaderException(
"Invalid mirror stage passed {}".format(
self.mirror_stage))
rule_props[mirror_action] = session_name
else:
rule_props[AclAction.PACKET] = PacketAction.FORWARD
elif rule.actions.config.forwarding_action == "DROP":
rule_props[AclAction.PACKET] = PacketAction.DROP
elif rule.actions.config.forwarding_action == "REJECT":
rule_props[AclAction.PACKET] = PacketAction.DROP
else:
raise AclLoaderException(
"Unknown rule action {} in table {}, rule {}".format(
rule.actions.config.forwarding_action, table_name,
rule_idx))
if not self.validate_actions(table_name, rule_props):
raise AclLoaderException(
"Rule action {} is not supported in table {}, rule {}".format(
rule.actions.config.forwarding_action, table_name,
rule_idx))
return rule_props
def validate_actions(self, table_name, action_props):
if self.is_table_control_plane(table_name):
return True
action_count = len(action_props)
if table_name not in self.tables_db_info:
raise AclLoaderException(
"Table {} does not exist".format(table_name))
stage = self.tables_db_info[table_name].get("stage", Stage.INGRESS)
# check if per npu state db is there then read using first state db
# else read from global statedb
if self.per_npu_statedb:
# For multi-npu we will read using anyone statedb connector for front asic namespace.
# Same information should be there in all state DB's
# as it is static information about switch capability
namespace_statedb = list(self.per_npu_statedb.values())[0]
capability = namespace_statedb.get_all(
self.statedb.STATE_DB,
"{}|switch".format(self.SWITCH_CAPABILITY_TABLE))
else:
capability = self.statedb.get_all(
self.statedb.STATE_DB,
"{}|switch".format(self.SWITCH_CAPABILITY_TABLE))
for action_key in dict(action_props):
key = "{}|{}".format(self.ACL_ACTIONS_CAPABILITY_FIELD,
stage.upper())
if key not in capability:
del action_props[action_key]
continue
values = capability[key].split(",")
if action_key.upper() not in values:
del action_props[action_key]
continue
if action_key == AclAction.PACKET:
# Check if action_value is supported
action_value = action_props[action_key]
key = "{}|{}".format(self.ACL_ACTION_CAPABILITY_FIELD,
action_key.upper())
if key not in capability:
del action_props[action_key]
continue
if action_value not in capability[key]:
del action_props[action_key]
continue
return action_count == len(action_props)
def convert_l2(self, table_name, rule_idx, rule):
rule_props = {}
if rule.l2.config.ethertype:
if rule.l2.config.ethertype in self.ethertype_map:
rule_props["ETHER_TYPE"] = self.ethertype_map[
rule.l2.config.ethertype]
else:
try:
rule_props["ETHER_TYPE"] = int(rule.l2.config.ethertype)
except Exception as e:
raise AclLoaderException(
"Failed to convert ethertype %s; table %s rule %s; exception=%s"
% (rule.l2.config.ethertype, table_name, rule_idx,
str(e)))
if rule.l2.config.vlan_id != "" and rule.l2.config.vlan_id != "null":
vlan_id = rule.l2.config.vlan_id
if vlan_id <= 0 or vlan_id >= 4096:
raise AclLoaderException(
"VLAN ID %d is out of bounds (0, 4096)" % (vlan_id))
rule_props["VLAN_ID"] = vlan_id
return rule_props
def convert_ip(self, table_name, rule_idx, rule):
rule_props = {}
# FIXME: 0 is a valid protocol number, but openconfig seems to use it as a default value,
# so there isn't currently a good way to check if the user defined proto=0 or not.
if rule.ip.config.protocol:
if rule.ip.config.protocol in self.ip_protocol_map:
# Special case: ICMP has different protocol numbers for IPv4 and IPv6, so if we receive
# "IP_ICMP" we need to pick the correct protocol number for the IP version
if rule.ip.config.protocol == "IP_ICMP" and self.is_table_ipv6(
table_name):
rule_props["IP_PROTOCOL"] = self.ip_protocol_map[
"IP_ICMPV6"]
else:
rule_props["IP_PROTOCOL"] = self.ip_protocol_map[
rule.ip.config.protocol]
else:
try:
int(rule.ip.config.protocol)
except:
raise AclLoaderException(
"Unknown rule protocol %s in table %s, rule %d!" %
(rule.ip.config.protocol, table_name, rule_idx))
rule_props["IP_PROTOCOL"] = rule.ip.config.protocol
if rule.ip.config.source_ip_address:
source_ip_address = rule.ip.config.source_ip_address
if ipaddress.ip_network(source_ip_address).version == 4:
rule_props["SRC_IP"] = source_ip_address
else:
rule_props["SRC_IPV6"] = source_ip_address
if rule.ip.config.destination_ip_address:
destination_ip_address = rule.ip.config.destination_ip_address
if ipaddress.ip_network(destination_ip_address).version == 4:
rule_props["DST_IP"] = destination_ip_address
else:
rule_props["DST_IPV6"] = destination_ip_address
# NOTE: DSCP is available only for MIRROR table
if self.is_table_mirror(table_name):
if rule.ip.config.dscp:
rule_props["DSCP"] = rule.ip.config.dscp
return rule_props
def convert_icmp(self, table_name, rule_idx, rule):
rule_props = {}
is_table_v6 = self.is_table_ipv6(table_name)
type_key = "ICMPV6_TYPE" if is_table_v6 else "ICMP_TYPE"
code_key = "ICMPV6_CODE" if is_table_v6 else "ICMP_CODE"
if rule.icmp.config.type != "" and rule.icmp.config.type != "null":
icmp_type = rule.icmp.config.type
if icmp_type < 0 or icmp_type > 255:
raise AclLoaderException(
"ICMP type %d is out of bounds [0, 255]" % (icmp_type))
rule_props[type_key] = icmp_type
if rule.icmp.config.code != "" and rule.icmp.config.code != "null":
icmp_code = rule.icmp.config.code
if icmp_code < 0 or icmp_code > 255:
raise AclLoaderException(
"ICMP code %d is out of bounds [0, 255]" % (icmp_code))
rule_props[code_key] = icmp_code
return rule_props
def convert_port(self, port):
"""
Convert port field format from openconfig ACL to Config DB schema
:param port: String, ACL port number or range in openconfig format
:return: Tuple, first value is converted port string,
second value is boolean, True if value is a port range, False
if it is a single port value
"""
# OpenConfig port range is of the format "####..####", whereas
# Config DB format is "####-####"
if ".." in port:
return port.replace("..", "-"), True
else:
return port, False
def convert_transport(self, table_name, rule_idx, rule):
rule_props = {}
if rule.transport.config.source_port:
port, is_range = self.convert_port(
str(rule.transport.config.source_port))
rule_props[
"L4_SRC_PORT_RANGE" if is_range else "L4_SRC_PORT"] = port
if rule.transport.config.destination_port:
port, is_range = self.convert_port(
str(rule.transport.config.destination_port))
rule_props[
"L4_DST_PORT_RANGE" if is_range else "L4_DST_PORT"] = port
tcp_flags = 0x00
for flag in rule.transport.config.tcp_flags:
if flag == "TCP_FIN":
tcp_flags |= 0x01
if flag == "TCP_SYN":
tcp_flags |= 0x02
if flag == "TCP_RST":
tcp_flags |= 0x04
if flag == "TCP_PSH":
tcp_flags |= 0x08
if flag == "TCP_ACK":
tcp_flags |= 0x10
if flag == "TCP_URG":
tcp_flags |= 0x20
if flag == "TCP_ECE":
tcp_flags |= 0x40
if flag == "TCP_CWR":
tcp_flags |= 0x80
if tcp_flags:
rule_props["TCP_FLAGS"] = '0x{:02x}/0x{:02x}'.format(
tcp_flags, tcp_flags)
return rule_props
def convert_input_interface(self, table_name, rule_idx, rule):
rule_props = {}
if rule.input_interface.interface_ref.config.interface:
rule_props[
"IN_PORTS"] = rule.input_interface.interface_ref.config.interface
return rule_props
def convert_rule_to_db_schema(self, table_name, rule):
"""
Convert rules format from openconfig ACL to Config DB schema
:param table_name: ACL table name to which rule belong
:param rule: ACL rule in openconfig format
:return: dict with Config DB schema
"""
rule_idx = int(rule.config.sequence_id)
rule_props = {}
rule_data = {(table_name, "RULE_" + str(rule_idx)): rule_props}
rule_props["PRIORITY"] = str(self.max_priority - rule_idx)
deep_update(rule_props, self.convert_action(table_name, rule_idx,
rule))
deep_update(rule_props, self.convert_l2(table_name, rule_idx, rule))
deep_update(rule_props, self.convert_ip(table_name, rule_idx, rule))
deep_update(rule_props, self.convert_icmp(table_name, rule_idx, rule))
deep_update(rule_props,
self.convert_transport(table_name, rule_idx, rule))
deep_update(rule_props,
self.convert_input_interface(table_name, rule_idx, rule))
return rule_data
def deny_rule(self, table_name):
"""
Create default deny rule in Config DB format
:param table_name: ACL table name to which rule belong
:return: dict with Config DB schema
"""
rule_props = {}
rule_data = {(table_name, "DEFAULT_RULE"): rule_props}
rule_props["PRIORITY"] = str(self.min_priority)
rule_props["PACKET_ACTION"] = "DROP"
if 'v6' in table_name.lower():
rule_props[
"IP_TYPE"] = "IPV6ANY" # ETHERTYPE is not supported for DATAACLV6
else:
rule_props["ETHER_TYPE"] = str(
self.ethertype_map["ETHERTYPE_IPV4"])
return rule_data
def convert_rules(self):
"""
Convert rules in openconfig ACL format to Config DB schema
:return:
"""
for acl_set_name in self.yang_acl.acl.acl_sets.acl_set:
table_name = acl_set_name.replace(" ", "_").replace("-",
"_").upper()
acl_set = self.yang_acl.acl.acl_sets.acl_set[acl_set_name]
if not self.is_table_valid(table_name):
warning("%s table does not exist" % (table_name))
continue
if self.current_table is not None and self.current_table != table_name:
continue
for acl_entry_name in acl_set.acl_entries.acl_entry:
acl_entry = acl_set.acl_entries.acl_entry[acl_entry_name]
try:
rule = self.convert_rule_to_db_schema(
table_name, acl_entry)
deep_update(self.rules_info, rule)
except AclLoaderException as ex:
error("Error processing rule %s: %s. Skipped." %
(acl_entry_name, ex))
if not self.is_table_mirror(table_name):
deep_update(self.rules_info, self.deny_rule(table_name))
def full_update(self):
"""
Perform full update of ACL rules configuration. All existing rules
will be removed. New rules loaded from file will be installed. If
the current_table is not empty, only rules within that table will
be removed and new rules in that table will be installed.
:return:
"""
for key in self.rules_db_info:
if self.current_table is None or self.current_table == key[0]:
self.configdb.mod_entry(self.ACL_RULE, key, None)
# Program for per front asic namespace also if present
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.mod_entry(self.ACL_RULE, key, None)
self.configdb.mod_config({self.ACL_RULE: self.rules_info})
# Program for per front asic namespace also if present
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.mod_config({self.ACL_RULE: self.rules_info})
def incremental_update(self):
"""
Perform incremental ACL rules configuration update. Get existing rules from
Config DB. Compare with rules specified in file and perform corresponding
modifications.
:return:
"""
# TODO: Until we test ASIC behavior, we cannot assume that we can insert
# dataplane ACLs and shift existing ACLs. Therefore, we perform a full
# update on dataplane ACLs, and only perform an incremental update on
# control plane ACLs.
new_rules = set(self.rules_info.keys())
new_dataplane_rules = set()
new_controlplane_rules = set()
current_rules = set(self.rules_db_info.keys())
current_dataplane_rules = set()
current_controlplane_rules = set()
for key in new_rules:
table_name = key[0]
if self.tables_db_info[table_name]['type'].upper(
) == self.ACL_TABLE_TYPE_CTRLPLANE:
new_controlplane_rules.add(key)
else:
new_dataplane_rules.add(key)
for key in current_rules:
table_name = key[0]
if self.tables_db_info[table_name]['type'].upper(
) == self.ACL_TABLE_TYPE_CTRLPLANE:
current_controlplane_rules.add(key)
else:
current_dataplane_rules.add(key)
# Remove all existing dataplane rules
for key in current_dataplane_rules:
self.configdb.mod_entry(self.ACL_RULE, key, None)
# Program for per-asic namespace also if present
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.mod_entry(self.ACL_RULE, key, None)
# Add all new dataplane rules
for key in new_dataplane_rules:
self.configdb.mod_entry(self.ACL_RULE, key, self.rules_info[key])
# Program for per-asic namespace corresponding to front asic also if present.
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.mod_entry(self.ACL_RULE, key,
self.rules_info[key])
added_controlplane_rules = new_controlplane_rules.difference(
current_controlplane_rules)
removed_controlplane_rules = current_controlplane_rules.difference(
new_controlplane_rules)
existing_controlplane_rules = new_rules.intersection(
current_controlplane_rules)
for key in added_controlplane_rules:
self.configdb.mod_entry(self.ACL_RULE, key, self.rules_info[key])
# Program for per-asic namespace corresponding to front asic also if present.
# For control plane ACL it's not needed but to keep all db in sync program everywhere
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.mod_entry(self.ACL_RULE, key,
self.rules_info[key])
for key in removed_controlplane_rules:
self.configdb.mod_entry(self.ACL_RULE, key, None)
# Program for per-asic namespace corresponding to front asic also if present.
# For control plane ACL it's not needed but to keep all db in sync program everywhere
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.mod_entry(self.ACL_RULE, key, None)
for key in existing_controlplane_rules:
if cmp(self.rules_info[key], self.rules_db_info[key]) != 0:
self.configdb.set_entry(self.ACL_RULE, key,
self.rules_info[key])
# Program for per-asic namespace corresponding to front asic also if present.
# For control plane ACL it's not needed but to keep all db in sync program everywhere
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.set_entry(self.ACL_RULE, key,
self.rules_info[key])
def delete(self, table=None, rule=None):
"""
:param table:
:param rule:
:return:
"""
for key in self.rules_db_info:
if not table or table == key[0]:
if not rule or rule == key[1]:
self.configdb.set_entry(self.ACL_RULE, key, None)
# Program for per-asic namespace corresponding to front asic also if present.
for namespace_configdb in self.per_npu_configdb.values():
namespace_configdb.set_entry(self.ACL_RULE, key, None)
def show_table(self, table_name):
"""
Show ACL table configuration.
:param table_name: Optional. ACL table name. Filter tables by specified name.
:return:
"""
header = ("Name", "Type", "Binding", "Description", "Stage")
data = []
for key, val in self.get_tables_db_info().items():
if table_name and key != table_name:
continue
stage = val.get("stage", Stage.INGRESS).lower()
if val["type"] == AclLoader.ACL_TABLE_TYPE_CTRLPLANE:
services = natsorted(val["services"])
data.append(
[key, val["type"], services[0], val["policy_desc"], stage])
if len(services) > 1:
for service in services[1:]:
data.append(["", "", service, "", ""])
else:
if not val["ports"]:
data.append(
[key, val["type"], "", val["policy_desc"], stage])
else:
ports = natsorted(val["ports"])
data.append([
key, val["type"], ports[0], val["policy_desc"], stage
])
if len(ports) > 1:
for port in ports[1:]:
data.append(["", "", port, "", ""])
print(
tabulate.tabulate(data,
headers=header,
tablefmt="simple",
missingval=""))
def show_session(self, session_name):
"""
Show mirror session configuration.
:param session_name: Optional. Mirror session name. Filter sessions by specified name.
:return:
"""
erspan_header = ("Name", "Status", "SRC IP", "DST IP", "GRE", "DSCP",
"TTL", "Queue", "Policer", "Monitor Port", "SRC Port",
"Direction")
span_header = ("Name", "Status", "DST Port", "SRC Port", "Direction",
"Queue", "Policer")
erspan_data = []
span_data = []
for key, val in self.get_sessions_db_info().items():
if session_name and key != session_name:
continue
if val.get("type") == "SPAN":
span_data.append([
key,
val.get("status", ""),
val.get("dst_port", ""),
val.get("src_port", ""),
val.get("direction", "").lower(),
val.get("queue", ""),
val.get("policer", "")
])
else:
erspan_data.append([
key,
val.get("status", ""),
val.get("src_ip", ""),
val.get("dst_ip", ""),
val.get("gre_type", ""),
val.get("dscp", ""),
val.get("ttl", ""),
val.get("queue", ""),
val.get("policer", ""),
val.get("monitor_port", ""),
val.get("src_port", ""),
val.get("direction", "").lower()
])
print("ERSPAN Sessions")
print(
tabulate.tabulate(erspan_data,
headers=erspan_header,
tablefmt="simple",
missingval=""))
print("\nSPAN Sessions")
print(
tabulate.tabulate(span_data,
headers=span_header,
tablefmt="simple",
missingval=""))
def show_policer(self, policer_name):
"""
Show policer configuration.
:param policer_name: Optional. Policer name. Filter policers by specified name.
:return:
"""
header = ("Name", "Type", "Mode", "CIR", "CBS")
data = []
for key, val in self.get_policers_db_info().items():
if policer_name and key != policer_name:
continue
data.append([
key, val["meter_type"], val["mode"],
val.get("cir", ""),
val.get("cbs", "")
])
print(
tabulate.tabulate(data,
headers=header,
tablefmt="simple",
missingval=""))
def show_rule(self, table_name, rule_id):
"""
Show ACL rules configuration.
:param table_name: Optional. ACL table name. Filter rules by specified table name.
:param rule_id: Optional. ACL rule name. Filter rule by specified rule name.
:return:
"""
header = ("Table", "Rule", "Priority", "Action", "Match")
def pop_priority(val):
priority = "N/A"
for key in dict(val):
if (key.upper() == "PRIORITY"):
priority = val.pop(key)
return priority
return priority
def pop_action(val):
action = ""
for key in dict(val):
key = key.upper()
if key == AclAction.PACKET:
action = val.pop(key)
elif key == AclAction.REDIRECT:
action = "REDIRECT: {}".format(val.pop(key))
elif key in (AclAction.MIRROR, AclAction.MIRROR_INGRESS):
action = "MIRROR INGRESS: {}".format(val.pop(key))
elif key == AclAction.MIRROR_EGRESS:
action = "MIRROR EGRESS: {}".format(val.pop(key))
else:
continue
return action
def pop_matches(val):
matches = list(sorted(["%s: %s" % (k, val[k]) for k in val]))
if len(matches) == 0:
matches.append("N/A")
return matches
raw_data = []
for (tname, rid), val in self.get_rules_db_info().items():
if table_name and table_name != tname:
continue
if rule_id and rule_id != rid:
continue
priority = pop_priority(val)
action = pop_action(val)
matches = pop_matches(val)
rule_data = [[tname, rid, priority, action, matches[0]]]
if len(matches) > 1:
for m in matches[1:]:
rule_data.append(["", "", "", "", m])
raw_data.append([priority, rule_data])
raw_data.sort(key=lambda x: x[0], reverse=True)
data = []
for _, d in raw_data:
data += d
print(
tabulate.tabulate(data,
headers=header,
tablefmt="simple",
missingval=""))
def add_pool(ctx, pool_name, global_ip_range, global_port_range):
"""Add Pool for Dynamic NAT-related configutation"""
if len(pool_name) > 32:
ctx.fail(
"Invalid pool name. Maximum allowed pool name is 32 characters !!")
# Verify the ip address range and format
ip_address = global_ip_range.split("-")
if len(ip_address) > 2:
ctx.fail(
"Given ip address range {} is invalid. Please enter a valid ip address range !!"
.format(global_ip_range))
elif len(ip_address) == 2:
if is_valid_ipv4_address(ip_address[0]) is False:
ctx.fail(
"Given ip address {} is not valid global address. Please enter a valid ip address !!"
.format(ip_address[0]))
if is_valid_ipv4_address(ip_address[1]) is False:
ctx.fail(
"Given ip address {} is not valid global address. Please enter a valid ip address !!"
.format(ip_address[1]))
ipLowLimit = int(ipaddress.IPv4Address(ip_address[0]))
ipHighLimit = int(ipaddress.IPv4Address(ip_address[1]))
if ipLowLimit >= ipHighLimit:
ctx.fail(
"Given ip address range {} is invalid. Please enter a valid ip address range !!"
.format(global_ip_range))
else:
if is_valid_ipv4_address(ip_address[0]) is False:
ctx.fail(
"Given ip address {} is not valid global address. Please enter a valid ip address !!"
.format(ip_address[0]))
ipLowLimit = int(ipaddress.IPv4Address(ip_address[0]))
ipHighLimit = int(ipaddress.IPv4Address(ip_address[0]))
# Verify the port address range and format
if global_port_range is not None:
port_address = global_port_range.split("-")
if len(port_address) > 2:
ctx.fail(
"Given port address range {} is invalid. Please enter a valid port address range !!"
.format(global_port_range))
elif len(port_address) == 2:
if is_valid_port_address(port_address[0]) is False:
ctx.fail(
"Given port value {} is invalid. Please enter a valid port value !!"
.format(port_address[0]))
if is_valid_port_address(port_address[1]) is False:
ctx.fail(
"Given port value {} is invalid. Please enter a valid port value !!"
.format(port_address[1]))
portLowLimit = int(port_address[0])
portHighLimit = int(port_address[1])
if portLowLimit >= portHighLimit:
ctx.fail(
"Given port address range {} is invalid. Please enter a valid port address range !!"
.format(global_port_range))
else:
if is_valid_port_address(port_address[0]) is False:
ctx.fail(
"Given port value {} is invalid. Please enter a valid port value !!"
.format(port_address[0]))
else:
global_port_range = "NULL"
config_db = ConfigDBConnector()
config_db.connect()
entryFound = False
table = "NAT_POOL"
key = pool_name
dataKey1 = 'nat_ip'
dataKey2 = 'nat_port'
data = config_db.get_entry(table, key)
if data:
if data[dataKey1] == global_ip_range and data[
dataKey2] == global_port_range:
click.echo("Trying to add pool, which is already present.")
entryFound = True
pool_dict = config_db.get_table(table)
if len(pool_dict) == 16:
click.echo(
"Failed to add pool, as already reached maximum pool limit 16.")
entryFound = True
# Verify the Ip address is overlapping with any Static NAT entry
if entryFound == False:
static_dict = config_db.get_table('STATIC_NAT')
if static_dict:
for staticKey, staticValues in static_dict.items():
global_ip = "---"
local_ip = "---"
nat_type = "dnat"
if isinstance(staticKey, str) is True:
global_ip = staticKey
else:
continue
local_ip = staticValues["local_ip"]
if "nat_type" in staticValues:
nat_type = staticValues["nat_type"]
if nat_type == "snat":
global_ip = local_ip
ipAddress = int(ipaddress.IPv4Address(global_ip))
if (ipAddress >= ipLowLimit and ipAddress <= ipHighLimit):
ctx.fail(
"Given Ip address entry is overlapping with existing Static NAT entry !!"
)
if entryFound == False:
config_db.set_entry(table, key, {
dataKey1: global_ip_range,
dataKey2: global_port_range
})
