def _set_rules_for_policy(self, context, firewall_policy_db, rule_id_list):
fwp_db = firewall_policy_db
with context.session.begin(subtransactions=True):
if not rule_id_list:
fwp_db.firewall_rules = []
fwp_db.audited = False
return
# We will first check if the new list of rules is valid
filters = {'id': [r_id for r_id in rule_id_list]}
rules_in_db = self._get_collection_query(context, FirewallRule,
filters=filters)
rules_dict = dict((fwr_db['id'], fwr_db) for fwr_db in rules_in_db)
for fwrule_id in rule_id_list:
if fwrule_id not in rules_dict:
# If we find an invalid rule in the list we
# do not perform the update since this breaks
# the integrity of this list.
raise firewall.FirewallRuleNotFound(firewall_rule_id=
fwrule_id)
elif rules_dict[fwrule_id]['firewall_policy_id']:
if (rules_dict[fwrule_id]['firewall_policy_id'] !=
fwp_db['id']):
raise firewall.FirewallRuleInUse(
firewall_rule_id=fwrule_id)
# New list of rules is valid so we will first reset the existing
# list and then add each rule in order.
# Note that the list could be empty in which case we interpret
# it as clearing existing rules.
fwp_db.firewall_rules = []
for fwrule_id in rule_id_list:
fwp_db.firewall_rules.append(rules_dict[fwrule_id])
fwp_db.firewall_rules.reorder()
fwp_db.audited = False
def remove_rule(self, context, id, rule_info):
LOG.debug(_("remove_rule() called"))
self._validate_insert_remove_rule_request(id, rule_info)
firewall_rule_id = rule_info['firewall_rule_id']
if not firewall_rule_id:
raise firewall.FirewallRuleNotFound(firewall_rule_id=None)
with context.session.begin(subtransactions=True):
fwr_db = self._get_firewall_rule(context, firewall_rule_id)
if fwr_db.firewall_policy_id != id:
raise firewall.FirewallRuleNotAssociatedWithPolicy(
firewall_rule_id=fwr_db['id'], firewall_policy_id=id)
return self._process_rule_for_policy(context, id, fwr_db, None)
def insert_rule(self, context, id, rule_info):
LOG.debug(_("insert_rule() called"))
self._validate_insert_remove_rule_request(id, rule_info)
firewall_rule_id = rule_info['firewall_rule_id']
insert_before = True
ref_firewall_rule_id = None
if not firewall_rule_id:
raise firewall.FirewallRuleNotFound(firewall_rule_id=None)
if 'insert_before' in rule_info:
ref_firewall_rule_id = rule_info['insert_before']
if not ref_firewall_rule_id and 'insert_after' in rule_info:
# If insert_before is set, we will ignore insert_after.
ref_firewall_rule_id = rule_info['insert_after']
insert_before = False
with context.session.begin(subtransactions=True):
fwr_db = self._get_firewall_rule(context, firewall_rule_id)
fwp_db = self._get_firewall_policy(context, id)
if fwr_db.firewall_policy_id:
raise firewall.FirewallRuleInUse(firewall_rule_id=fwr_db['id'])
self._check_firewall_rule_conflict(fwr_db, fwp_db)
if ref_firewall_rule_id:
# If reference_firewall_rule_id is set, the new rule
# is inserted depending on the value of insert_before.
# If insert_before is set, the new rule is inserted before
# reference_firewall_rule_id, and if it is not set the new
# rule is inserted after reference_firewall_rule_id.
ref_fwr_db = self._get_firewall_rule(
context, ref_firewall_rule_id)
if ref_fwr_db.firewall_policy_id != id:
raise firewall.FirewallRuleNotAssociatedWithPolicy(
firewall_rule_id=ref_fwr_db['id'],
firewall_policy_id=id)
if insert_before:
position = ref_fwr_db.position
else:
position = ref_fwr_db.position + 1
else:
# If reference_firewall_rule_id is not set, it is assumed
# that the new rule needs to be inserted at the top.
# insert_before field is ignored.
# So default insertion is always at the top.
# Also note that position numbering starts at 1.
position = 1
return self._process_rule_for_policy(context, id, fwr_db,
position)
def _get_firewall_rule(self, context, id):
try:
return self._get_by_id(context, FirewallRule, id)
except exc.NoResultFound:
raise firewall.FirewallRuleNotFound(firewall_rule_id=id)