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"""SDNC topology module. NETCONF-API."""
# Copyright 2023 Deutsche Telekom AG
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import List, Dict, Iterable
from onapsdk.utils.headers_creator import headers_sdnc_creator
from onapsdk.utils.jinja import jinja_env
from .sdnc_element import SdncElement
class Node(SdncElement):
"""SDNC Node."""
headers: Dict[str, str] = headers_sdnc_creator(SdncElement.headers)
def __init__(self, # pylint: disable=too-many-arguments
node_id: str,
host: str,
port: int,
username: str,
password: str,
topology_id: str = "topology-netconf",
**kwargs) -> None:
"""Node information initialization.
Args:
node_id (str): Node id,
host (str): Node IPv4 address,
port (int): Node Netconf port number,
username (str): Node username,
password (str): Node password,
topology_id: (str) : Topology, where node is contained
data (Dict): other possible Node data,
"""
super().__init__()
self.node_id: str = node_id
self.host: str = host
self.port: int = port
self.username: str = username
self.password: str = password
self.topology_id: str = topology_id
self.data: Dict = kwargs
def __repr__(self) -> str:
"""Node information human-readable string.
Returns:
str: Node information description
"""
return f"Node(node_id={self.node_id}," \
f"host={self.host}," \
f"port={self.port}," \
f"username={self.username}," \
f"password={self.password}," \
f"data={self.data})"
def create(self) -> None:
"""Create the node element of the topology at SDNC via NETCONF-API.
Returns:
None
"""
node_json_template = {
"node": {
"node-id": "",
"netconf-node-topology:host": "",
"netconf-node-topology:port": 0,
"netconf-node-topology:username": "",
"netconf-node-topology:password": ""
}
}
self.send_message(
"POST",
"Add a node element into the topology at SDNC using NETCONF-API",
(f"{self.base_url}/rests/data/"
f"network-topology:network-topology/topology={self.topology_id}"),
data=jinja_env().get_template(
"create_node_netconf_api.json.j2").
render(
node_json_template,
node_id=self.node_id,
host_=self.host,
port_=self.port,
username_=self.username,
password_=self.password
)
)
def update(self) -> None:
"""Update the node element of the topology at SDNC via NETCONF-API.
Returns:
None
"""
node_json_template = {
"node": {
"node-id": "",
"netconf-node-topology:host": "",
"netconf-node-topology:port": 0,
"netconf-node-topology:username": "",
"netconf-node-topology:password": ""
}
}
self.send_message(
"PUT",
"Add a Node element into the topology using NETCONF-API",
(f"{self.base_url}/rests/data/"
f"network-topology:network-topology/topology={self.topology_id}"
f"/node={self.node_id}"),
data=jinja_env().get_template(
"create_node_netconf_api.json.j2").
render(
node_json_template,
node_id=self.node_id,
host_=self.host,
port_=self.port,
username_=self.username,
password_=self.password)
)
def delete(self) -> None:
"""Delete the node element of the topology from SDNC via NETCONF-API.
Returns:
None
"""
self.send_message(
"DELETE",
"Delete a Node element from the topology using NETCONF-API",
(f"{self.base_url}/rests/data/"
f"network-topology:network-topology/topology={self.topology_id}"
f"/node={self.node_id}")
)
class Topology(SdncElement):
"""SDNC topology."""
headers: Dict[str, str] = headers_sdnc_creator(SdncElement.headers)
def __init__(self,
topology_id: str = "topology-netconf",
nodes: List[Node] = None):
"""Topology information initialization.
Args:
topology_id (str): Topology instance id
nodes (list): List of nodes inside the topology
"""
super().__init__()
self.topology_id: str = topology_id
self.nodes: list = nodes
def __repr__(self) -> str:
"""Topology information human-readable string.
Returns:
str: Topology information description
"""
return f"Topology(topology_id={self.topology_id}," \
f"nodes={self.nodes})"
@classmethod
def get_all(cls) -> Iterable["Topology"]:
"""Get all topologies from SDNC using NETCONF-API.
Yields:
: Topology object
"""
topologies = cls.send_message_json("GET",
"Get all topologies from SDNC using NETCONF-API",
f"{cls.base_url}"
f"/rests/data/network-topology:network-topology"
).get("network-topology:network-topology", {}
).get("topology", [])
for topology in topologies:
try:
yield Topology(topology_id=topology["topology-id"], nodes=topology["node"])
except KeyError:
print(f"Topology with topology-id={topology['topology-id']}"
f" doesn't contain any node")
yield Topology(topology_id=topology["topology-id"])
@classmethod
def get(cls, topology_id) -> "Topology":
"""Get the topology with a specific topology_id from SDNC via NETCONF-API.
Returns:
Topology
"""
topology_object = cls.send_message_json("GET",
"Get all topologies from SDNC using NETCONF-API",
f"{cls.base_url}"
f"/rests/data/network-topology:network-topology/"
f"topology={topology_id}"
)
try:
topology = topology_object["network-topology:topology"][0]
return Topology(topology_id=topology["topology-id"],
nodes=topology["node"]
)
except KeyError:
return Topology(topology_id=topology_id)
def get_node(self, node_id) -> "Node":
"""Get the node with a specific node_id form the specific topology at SDNC via NETCONF-API.
Returns:
Node
"""
node_object = self.send_message_json("GET",
"Get all nodes from SDNC using NETCONF-API",
f"{self.base_url}"
f"/rests/data/network-topology:network-topology/"
f"topology={self.topology_id}/node={node_id}")
try:
node = node_object["network-topology:node"][0]
return Node(node_id=node["node-id"],
host=node["netconf-node-topology:host"],
port=node["netconf-node-topology:port"],
username=node["netconf-node-topology:username"],
password=node["netconf-node-topology:password"],
topology_id=self.topology_id)
except KeyError:
print(f"Error. Node creation skipped.")
def get_all_nodes(self) -> Iterable["Node"]:
"""Get all nodes of the specific topology from SDNC using NETCONF-API.
Yields:
: Node object
"""
nodes_object = self.send_message_json("GET",
"Get all nodes from SDNC using NETCONF-API",
f"{self.base_url}/rests/data"
f"/network-topology:network-topology/"
f"topology={self.topology_id}"
)
nodes = nodes_object["network-topology:topology"][0]["node"]
for node in nodes:
try:
yield Node(node_id=node["node-id"],
host=node["netconf-node-topology:host"],
port=node["netconf-node-topology:port"],
username=node["netconf-node-topology:username"],
password=node["netconf-node-topology:password"],
topology_id=self.topology_id)
except KeyError:
print(f"Error. Node creation skipped. KeyError")
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