def _state_overridden(want, have):
""" The command generator when state is overridden
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
commands = []
for vlan_id, extant in have.items():
if vlan_id in want:
desired = want[vlan_id]
else:
desired = dict()
add_config = dict_diff(extant, desired)
del_config = dict_diff(desired, extant)
commands.extend(generate_commands(vlan_id, add_config, del_config))
# Handle vlans not already in config
new_vlans = [vlan_id for vlan_id in want if vlan_id not in have]
for vlan_id in new_vlans:
desired = want[vlan_id]
extant = dict(vlan_id=vlan_id)
add_config = dict_diff(extant, desired)
commands.extend(generate_commands(vlan_id, add_config, {}))
return commands
def get_ace_diff(want_ace, have_ace):
# gives the diff of the aces passed.
for h_a in have_ace:
d = dict_diff(want_ace, h_a)
if not d:
break
return d
def _state_merged(self, want, have):
""" The requests generator when state is merged
:rtype: A list
:returns: the requests necessary to merge the provided into
the current configuration
"""
requests = []
request_patch = deepcopy(self.VLAN_PATCH)
for w in want:
if w.get('vlan_id'):
h = search_obj_in_list(w['vlan_id'], have, 'vlan_id')
if h:
if dict_diff(w, h):
request_body = self._update_patch_request(w)
request_patch["data"]["openconfig-vlan:vlans"][
"vlan"].append(request_body)
else:
request_post = self._update_post_request(w)
requests.append(request_post)
if len(request_patch["data"]["openconfig-vlan:vlans"]["vlan"]):
request_patch["data"] = json.dumps(request_patch["data"])
requests.append(request_patch)
return requests
def _set_commands(self, want_ace, have_ace):
"""A helped method that checks if there is
a delta between the `have_ace` and `want_ace`.
If there is a delta then it calls `_compute_commands`
to create the ACE line.
:rtype: A string
:returns: An ACE generated from a structured ACE dictionary
via a call to `_compute_commands`
"""
if 'line' in want_ace:
if want_ace['line'] != have_ace.get('line'):
return self._compute_commands(want_ace)
else:
if ('prefix' in want_ace.get('source', {})) or ('prefix' in want_ace.get('destination', {})):
self._prepare_for_diff(want_ace)
protocol_opt_delta = {}
delta = dict_diff(have_ace, want_ace)
# `dict_diff` doesn't work properly for `protocol_options` diff,
# so we need to handle it separately
if want_ace.get('protocol_options', {}):
protocol_opt_delta = set(flatten_dict(have_ace.get('protocol_options', {}))) ^ \
set(flatten_dict(want_ace.get('protocol_options', {})))
if delta or protocol_opt_delta:
want_ace = self._dict_merge(have_ace, want_ace)
return self._compute_commands(want_ace)
def _render_updates(self, want, have):
commands = []
if have:
temp_have_legacy_protos = have.pop('legacy_protocols', None)
else:
have = {}
temp_want_legacy_protos = want.pop('legacy_protocols', None)
updates = dict_diff(have, want)
if have and temp_have_legacy_protos:
have['legacy_protocols'] = temp_have_legacy_protos
if not have and temp_want_legacy_protos:
want['legacy_protocols'] = temp_want_legacy_protos
commands.extend(self._add_lldp_protocols(want, have))
if updates:
for key, value in iteritems(updates):
if value:
if key == 'enable':
commands.append(self._compute_command())
elif key == 'address':
commands.append(
self._compute_command('management-address',
str(value)))
elif key == 'snmp':
if value == 'disable':
commands.append(
self._compute_command(key, remove=True))
else:
commands.append(
self._compute_command(key, str(value)))
return commands
def _state_overridden(self, want, have):
""" The request generator when state is overridden
:rtype: A list
:returns: the requests necessary to migrate the current configuration
to the desired configuration
"""
requests = []
request_patch = deepcopy(self.VLAN_PATCH)
have_copy = []
for w in want:
if w.get('vlan_id'):
h = search_obj_in_list(w['vlan_id'], have, 'vlan_id')
if h:
if dict_diff(w, h):
request_body = self._update_patch_request(w)
request_patch["data"]["openconfig-vlan:vlans"][
"vlan"].append(request_body)
have_copy.append(h)
else:
request_post = self._update_post_request(w)
requests.append(request_post)
for h in have:
if h not in have_copy and h['vlan_id'] != 1:
request_delete = self._update_delete_request(h)
requests.append(request_delete)
if len(request_patch["data"]["openconfig-vlan:vlans"]["vlan"]):
request_patch["data"] = json.dumps(request_patch["data"])
requests.append(request_patch)
return requests
def _render_updates(self, want, have):
commands = []
temp_have_members = have.pop("members", None)
temp_want_members = want.pop("members", None)
updates = dict_diff(have, want)
if temp_have_members:
have["members"] = temp_have_members
if temp_want_members:
want["members"] = temp_want_members
commands.extend(self._add_bond_members(want, have))
if updates:
for key, value in iteritems(updates):
if value:
if key == "arp_monitor":
commands.extend(
self._add_arp_monitor(updates, key, want, have))
else:
commands.append(
self._compute_command(have["name"], key,
str(value)))
return commands
def _state_replaced(self, want, have):
""" The command generator when state is replaced
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
cmds = []
obj_in_have = search_obj_in_list(want['name'], have, 'name')
if obj_in_have:
diff = dict_diff(want, obj_in_have)
else:
diff = want
merged_cmds = self.set_commands(want, have)
if 'name' not in diff:
diff['name'] = want['name']
replaced_cmds = []
if obj_in_have:
replaced_cmds = self.del_attribs(diff)
if replaced_cmds or merged_cmds:
for cmd in set(replaced_cmds).intersection(set(merged_cmds)):
merged_cmds.remove(cmd)
cmds.extend(replaced_cmds)
cmds.extend(merged_cmds)
return cmds
def get_diff(self, comparable, base):
diff = {}
if not base:
diff = comparable
else:
diff = dict_diff(base, comparable)
return diff
def _state_replaced(self, want, have):
""" The command generator when state is replaced.
Scope is limited to vlan objects defined in the playbook.
:rtype: A list
:returns: The minimum command set required to migrate the current
configuration to the desired configuration.
"""
obj_in_have = search_obj_in_list(want["vlan_id"], have, "vlan_id")
if obj_in_have:
# ignore states that are already reset, then diff what's left
obj_in_have = self.remove_default_states(obj_in_have)
diff = dict_diff(want, obj_in_have)
# Remove merge items from diff; what's left will be used to
# remove states not specified in the playbook
for k in dict(set(want.items()) - set(obj_in_have.items())).keys():
diff.pop(k, None)
else:
diff = want
# merged_cmds: 'want' cmds to update 'have' states that don't match
# replaced_cmds: remaining 'have' cmds that need to be reset to default
merged_cmds = self.set_commands(want, have)
replaced_cmds = []
if obj_in_have:
# Remaining diff items are used to reset states to default
replaced_cmds = self.del_attribs(diff)
cmds = []
if replaced_cmds or merged_cmds:
cmds += ["vlan %s" % str(want["vlan_id"])]
cmds += merged_cmds + replaced_cmds
return cmds
def _add_location(self, name, want_item, have_item):
commands = []
have_dict = {}
have_ca = {}
set_cmd = name + " location "
want_location_type = want_item.get("location") or {}
have_location_type = have_item.get("location") or {}
if want_location_type["coordinate_based"]:
want_dict = want_location_type.get("coordinate_based") or {}
if is_dict_element_present(have_location_type, "coordinate_based"):
have_dict = have_location_type.get("coordinate_based") or {}
location_type = "coordinate-based"
updates = dict_diff(have_dict, want_dict)
for key, value in iteritems(updates):
if value:
commands.append(
self._compute_command(set_cmd + location_type, key,
str(value)))
elif want_location_type["civic_based"]:
location_type = "civic-based"
want_dict = want_location_type.get("civic_based") or {}
want_ca = want_dict.get("ca_info") or []
if is_dict_element_present(have_location_type, "civic_based"):
have_dict = have_location_type.get("civic_based") or {}
have_ca = have_dict.get("ca_info") or []
if want_dict["country_code"] != have_dict["country_code"]:
commands.append(
self._compute_command(
set_cmd + location_type,
"country-code",
str(want_dict["country_code"]),
))
else:
commands.append(
self._compute_command(
set_cmd + location_type,
"country-code",
str(want_dict["country_code"]),
))
commands.extend(self._add_civic_address(name, want_ca, have_ca))
elif want_location_type["elin"]:
location_type = "elin"
if is_dict_element_present(have_location_type, "elin"):
if want_location_type.get("elin") != have_location_type.get(
"elin"):
commands.append(
self._compute_command(
set_cmd + location_type,
value=str(want_location_type["elin"]),
))
else:
commands.append(
self._compute_command(
set_cmd + location_type,
value=str(want_location_type["elin"]),
))
return commands
def _state_replaced(self, w, have):
""" The command generator when state is replaced
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
commands = []
obj_in_have = search_obj_in_list(w['name'], have, 'name')
if obj_in_have:
diff = dict_diff(w, obj_in_have)
else:
diff = w
merged_commands = self.set_commands(w, have)
if 'name' not in diff:
diff['name'] = w['name']
wkeys = w.keys()
dkeys = diff.keys()
for k in wkeys:
if k in self.exclude_params and k in dkeys:
del diff[k]
replaced_commands = self.del_attribs(diff)
if merged_commands:
cmds = set(replaced_commands).intersection(set(merged_commands))
for cmd in cmds:
merged_commands.remove(cmd)
commands.extend(replaced_commands)
commands.extend(merged_commands)
return commands
def _render_updates(self, want, have, opr=True):
"""
This function takes the diff between want and have and
invokes the appropriate functions to create the commands
to update the attributes.
:param want:
:param have:
:return: list of commands
"""
commands = []
want_nh = want.get('next_hops') or []
# delete static route operation per destination
if not opr and not want_nh:
commands.append(
self._compute_command(dest=want['dest'], remove=True))
else:
temp_have_next_hops = have.pop('next_hops', None)
temp_want_next_hops = want.pop('next_hops', None)
updates = dict_diff(have, want)
if temp_have_next_hops:
have['next_hops'] = temp_have_next_hops
if temp_want_next_hops:
want['next_hops'] = temp_want_next_hops
commands.extend(self._add_next_hop(want, have, opr=opr))
if opr and updates:
for key, value in iteritems(updates):
if value:
if key == 'blackhole_config':
commands.extend(
self._add_blackhole(key, want, have))
return commands
def _state_overridden(self, want, have):
""" The request generator when state is overridden
:rtype: A list
:returns: the requests necessary to migrate the current configuration
to the desired configuration
"""
requests = []
have_copy = []
for w in want:
for h in have:
if w["name"] == h["name"]:
if dict_diff(w, h):
l2_request = self._update_patch_request(w, h)
l2_request["data"] = json.dumps(l2_request["data"])
requests.append(l2_request)
have_copy.append(h)
break
for h in have:
if h not in have_copy:
l2_delete = self._update_delete_request(h)
if l2_delete["path"]:
l2_delete["data"] = json.dumps(l2_delete["data"])
requests.append(l2_delete)
return requests
def _state_merged(self, want, have):
""" The command generator when state is merged
:rtype: A list
:returns: the commands necessary to merge the provided into
the current configuration
"""
commands = []
want_copy = deepcopy(remove_empties(want))
have_copy = deepcopy(have)
want_vifs = want_copy.pop("vifs", [])
have_vifs = have_copy.pop("vifs", [])
updates = dict_diff(have_copy, want_copy)
if updates:
for key, value in iteritems(updates):
commands.append(
self._compute_commands(key=key,
value=value,
interface=want_copy["name"]))
if want_vifs:
for want_vif in want_vifs:
have_vif = search_obj_in_list(want_vif["vlan_id"],
have_vifs,
key="vlan_id")
if not have_vif:
have_vif = {
"vlan_id": want_vif["vlan_id"],
"enabled": True,
}
vif_updates = dict_diff(have_vif, want_vif)
if vif_updates:
for key, value in iteritems(vif_updates):
commands.append(
self._compute_commands(
key=key,
value=value,
interface=want_copy["name"],
vif=want_vif["vlan_id"],
))
return commands
def _add_location(self, name, want_item, have_item):
commands = []
have_dict = {}
have_ca = {}
set_cmd = name + ' location '
want_location_type = want_item.get('location') or {}
have_location_type = have_item.get('location') or {}
if want_location_type['coordinate_based']:
want_dict = want_location_type.get('coordinate_based') or {}
if is_dict_element_present(have_location_type, 'coordinate_based'):
have_dict = have_location_type.get('coordinate_based') or {}
location_type = 'coordinate-based'
updates = dict_diff(have_dict, want_dict)
for key, value in iteritems(updates):
if value:
commands.append(
self._compute_command(set_cmd + location_type, key, str(value))
)
elif want_location_type['civic_based']:
location_type = 'civic-based'
want_dict = want_location_type.get('civic_based') or {}
want_ca = want_dict.get('ca_info') or []
if is_dict_element_present(have_location_type, 'civic_based'):
have_dict = have_location_type.get('civic_based') or {}
have_ca = have_dict.get('ca_info') or []
if want_dict['country_code'] != have_dict['country_code']:
commands.append(
self._compute_command(
set_cmd + location_type, 'country-code', str(want_dict['country_code'])
)
)
else:
commands.append(
self._compute_command(
set_cmd + location_type, 'country-code', str(want_dict['country_code'])
)
)
commands.extend(self._add_civic_address(name, want_ca, have_ca))
elif want_location_type['elin']:
location_type = 'elin'
if is_dict_element_present(have_location_type, 'elin'):
if want_location_type.get('elin') != have_location_type.get('elin'):
commands.append(
self._compute_command(
set_cmd + location_type, value=str(want_location_type['elin'])
)
)
else:
commands.append(
self._compute_command(
set_cmd + location_type, value=str(want_location_type['elin'])
)
)
return commands
def test_dict_diff(self):
base = dict(obj2=dict(),
b1=True,
b2=False,
b3=False,
one=1,
two=2,
three=3,
obj1=dict(key1=1, key2=2),
l1=[1, 3],
l2=[1, 2, 3],
l4=[4],
nested=dict(n1=dict(n2=2)))
other = dict(b1=True,
b2=False,
b3=True,
b4=True,
one=1,
three=4,
four=4,
obj1=dict(key1=2),
l1=[2, 1],
l2=[3, 2, 1],
l3=[1],
nested=dict(n1=dict(n2=2, n3=3)))
result = dict_diff(base, other)
# string assertions
self.assertNotIn('one', result)
self.assertNotIn('two', result)
self.assertEqual(result['three'], 4)
self.assertEqual(result['four'], 4)
# dict assertions
self.assertIn('obj1', result)
self.assertIn('key1', result['obj1'])
self.assertNotIn('key2', result['obj1'])
# list assertions
self.assertEqual(result['l1'], [2, 1])
self.assertNotIn('l2', result)
self.assertEqual(result['l3'], [1])
self.assertNotIn('l4', result)
# nested assertions
self.assertIn('obj1', result)
self.assertEqual(result['obj1']['key1'], 2)
self.assertNotIn('key2', result['obj1'])
# bool assertions
self.assertNotIn('b1', result)
self.assertNotIn('b2', result)
self.assertTrue(result['b3'])
self.assertTrue(result['b4'])
def test_dict_diff():
base = dict(obj2=dict(),
b1=True,
b2=False,
b3=False,
one=1,
two=2,
three=3,
obj1=dict(key1=1, key2=2),
l1=[1, 3],
l2=[1, 2, 3],
l4=[4],
nested=dict(n1=dict(n2=2)))
other = dict(b1=True,
b2=False,
b3=True,
b4=True,
one=1,
three=4,
four=4,
obj1=dict(key1=2),
l1=[2, 1],
l2=[3, 2, 1],
l3=[1],
nested=dict(n1=dict(n2=2, n3=3)))
result = dict_diff(base, other)
# string assertions
assert 'one' not in result
assert 'two' not in result
assert result['three'] == 4
assert result['four'] == 4
# dict assertions
assert 'obj1' in result
assert 'key1' in result['obj1']
assert 'key2' not in result['obj1']
# list assertions
assert result['l1'] == [2, 1]
assert 'l2' not in result
assert result['l3'] == [1]
assert 'l4' not in result
# nested assertions
assert 'obj1' in result
assert result['obj1']['key1'] == 2
assert 'key2' not in result['obj1']
# bool assertions
assert 'b1' not in result
assert 'b2' not in result
assert result['b3']
assert result['b4']
def _state_overridden(want, have):
""" The command generator when state is overridden
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
commands = []
for key, extant in have.items():
if key in want:
desired = want[key]
else:
desired = dict()
add_config = dict_diff(extant, desired)
del_config = dict_diff(desired, extant)
commands.extend(generate_commands(key, add_config, del_config))
return commands
def set_config(want, have):
commands = []
to_set = dict_diff(have, want)
for member in to_set.get("members", []):
channel_id = want["name"][12:]
commands.extend([
"interface {0}".format(member["member"]),
"channel-group {0} mode {1}".format(channel_id, member["mode"]),
])
return commands
def _state_replaced(want, have):
""" The command generator when state is replaced
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
commands = []
for vlan_id, desired in want.items():
if vlan_id in have:
extant = have[vlan_id]
else:
extant = dict()
add_config = dict_diff(extant, desired)
del_config = dict_diff(desired, extant)
commands.extend(generate_commands(vlan_id, add_config, del_config))
return commands
def _state_merged(self, want, have):
""" The command generator when state is merged
:rtype: A list
:returns: the commands necessary to merge the provided into
the current configuration
"""
commands = []
diff = dict_diff(have, want)
commands.extend(self.set_commands(diff))
return commands
def set_commands(self, want, have):
commands = []
obj_in_have = flatten_dict(
search_obj_in_list(want['name'], have, 'name'))
if not obj_in_have:
commands = self.add_commands(flatten_dict(want))
else:
diff = dict_diff(obj_in_have, want)
if diff:
diff.update({'name': want['name']})
commands = self.add_commands(diff)
return commands
def _state_replaced(want, have):
""" The command generator when state is replaced
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
commands = []
for key, desired in want.items():
interface_name = normalize_interface(key)
if interface_name in have:
extant = have[interface_name]
else:
extant = dict()
add_config = dict_diff(extant, desired)
del_config = dict_diff(desired, extant)
commands.extend(generate_commands(key, add_config, del_config))
return commands
def remove_config(want, have):
commands = []
if not want.get("members"):
return ["no interface {0}".format(want["name"])]
to_remove = dict_diff(want, have)
for member in to_remove.get("members", []):
commands.extend([
"interface {0}".format(member["member"]),
"no channel-group",
])
return commands
def _state_replaced(want, have):
""" The command generator when state is replaced
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
commands = []
to_set = dict_diff(have, want)
if 'system' in to_set:
system = to_set['system']
if 'priority' in system:
commands.append('lacp system-priority {0}'.format(system['priority']))
to_del = dict_diff(want, have)
if 'system' in to_del:
system = to_del['system']
system_set = to_set.get('system', {})
if 'priority' in system and 'priority' not in system_set:
commands.append('no lacp system-priority')
return commands
def _state_merged(self, want, have):
""" The command generator when state is merged
:rtype: A list
:returns: the commands necessary to merge the provided into
the current configuration
"""
commands = []
updates = dict_diff(have, want)
if updates:
for key, value in iteritems(flatten_dict(remove_empties(updates))):
commands.append(self._compute_commands(key, value))
return commands
def _state_replaced(self, w, have):
""" The command generator when state is replaced
:rtype: A list
:returns: the commands necessary to migrate the current configuration
to the desired configuration
"""
commands = []
name = w['name']
obj_in_have = search_obj_in_list(name, have, 'name')
if obj_in_have:
# If 'w' does not specify mode then intf may need to change to its
# default mode, however default mode may depend on sysdef.
if not w.get('mode') and re.search('Ethernet|port-channel', name):
sysdefs = self.intf_defs['sysdefs']
sysdef_mode = sysdefs['mode']
if obj_in_have.get('mode') != sysdef_mode:
w['mode'] = sysdef_mode
diff = dict_diff(w, obj_in_have)
else:
diff = w
merged_commands = self.set_commands(w, have)
if merged_commands:
# merged_commands:
# - These commands are changes specified by the playbook.
# - merged_commands apply to both existing and new objects
# replaced_commands:
# - These are the unspecified commands, used to reset any params
# that are not already set to default states
# - replaced_commands should only be used on 'have' objects
# (interfaces that already exist)
if obj_in_have:
if 'name' not in diff:
diff['name'] = name
wkeys = w.keys()
dkeys = diff.keys()
for k in wkeys:
if k in self.exclude_params and k in dkeys:
del diff[k]
replaced_commands = self.del_attribs(diff)
cmds = set(replaced_commands).intersection(
set(merged_commands))
for cmd in cmds:
merged_commands.remove(cmd)
commands.extend(replaced_commands)
commands.extend(merged_commands)
return commands
def _state_merged(want, have):
""" The command generator when state is merged
:rtype: A list
:returns: the commands necessary to merge the provided into
the current configuration
"""
commands = []
to_set = dict_diff(have, want)
if 'system' in to_set:
system = to_set['system']
if 'priority' in system:
commands.append('lacp system-priority {0}'.format(system['priority']))
return commands
def _state_deleted(want, have):
""" The command generator when state is deleted
:rtype: A list
:returns: the commands necessary to remove the current configuration
of the provided objects
"""
commands = []
to_del = dict_diff(want, have)
if 'system' in to_del:
system = to_del['system']
if 'priority' in system:
commands.append('no lacp system-priority')
return commands
def test_dict_diff():
base = dict(obj2=dict(), b1=True, b2=False, b3=False,
one=1, two=2, three=3, obj1=dict(key1=1, key2=2),
l1=[1, 3], l2=[1, 2, 3], l4=[4],
nested=dict(n1=dict(n2=2)))
other = dict(b1=True, b2=False, b3=True, b4=True,
one=1, three=4, four=4, obj1=dict(key1=2),
l1=[2, 1], l2=[3, 2, 1], l3=[1],
nested=dict(n1=dict(n2=2, n3=3)))
result = dict_diff(base, other)
# string assertions
assert 'one' not in result
assert 'two' not in result
assert result['three'] == 4
assert result['four'] == 4
# dict assertions
assert 'obj1' in result
assert 'key1' in result['obj1']
assert 'key2' not in result['obj1']
# list assertions
assert result['l1'] == [2, 1]
assert 'l2' not in result
assert result['l3'] == [1]
assert 'l4' not in result
# nested assertions
assert 'obj1' in result
assert result['obj1']['key1'] == 2
assert 'key2' not in result['obj1']
# bool assertions
assert 'b1' not in result
assert 'b2' not in result
assert result['b3']
assert result['b4']