+# Copyright 2022 highstreet technologies GmbH
+#
+# 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.
+
+#!/usr/bin/python
+"""
+Module for the class representing a TAPI Link
+"""
+from typing import Dict, Union
+import uuid
+from lxml import etree
+from model.python.link_config import LinkConfig
+from model.python.top import Top
+
+
+class TapiLink(Top):
+ """
+ Class representing a TAPI Link object.
+ """
+
+ __data: dict = {}
+ __configuration: dict = {}
+
+ # constructor
+ def __init__(self, configuration: dict):
+ super().__init__(configuration)
+ self.__configuration = configuration
+ self.__link_configuration = LinkConfig(
+ topology_reference=configuration["topology_reference"],
+ name_prefix=configuration["name_prefix"],
+ provider=configuration["provider"],
+ consumer=configuration["consumer"]
+ )
+ link_data = self.__link_configuration.json()
+ self.__data = {
+ "uuid": str(uuid.uuid4()),
+ "name": [{
+ "value-name": "topology-link-name",
+ "value": link_data['link']['name']
+ }],
+ "transitioned-layer-protocol-name": ["inETH", "outETH"],
+ "administrative-state": "LOCKED",
+ "operational-state": "ENABLED",
+ "direction": "BIDIRECTIONAL",
+ "lifecycle-state": "INSTALLED",
+ "node-edge-point": [
+ link_data['link']['a'],
+ link_data['link']['z']
+ ],
+ "latency-characteristic": [{
+ "traffic-property-name": "property-1",
+ "queing-latency-characteristic": "queue-1",
+ "fixed-latency-characteristic": "latency-1",
+ "jitter-characteristic": "jitter-1",
+ "wander-characteristic": "wander-1"
+ }],
+ "layer-protocol-name": ["ETH"],
+ "risk-characteristic": [{
+ "risk-characteristic-name": "risk-name",
+ "risk-identifier-list": [
+ "risk-1"]}],
+ "validation-mechanism": [{
+ "validation-mechanism": "mechanism-1",
+ "validation-robustness": "very-robust",
+ "layer-protocol-adjacency-validated": "validated"}],
+ "cost-characteristic": [{
+ "cost-name": "cost",
+ "cost-algorithm": "alg1",
+ "cost-value": "value-1"}]}
+
+ # getter
+ def configuration(self) -> Dict[str, Dict]:
+ """
+ Getter for a json object representing the initial configuration of a TAPI Link.
+ :return TAPI Link configuration as json object.
+ """
+ return self.__configuration
+
+ def data(self) -> dict:
+ """
+ Getter for a json object representing the TAPI Link.
+ :return TAPI Link as json object.
+ """
+ return self.__data
+
+ def json(self) -> dict:
+ """
+ Getter for a json object representing the TAPI Link.
+ :return TAPI Link as json object.
+ """
+ return self.data()
+
+ def identifier(self) -> str:
+ """
+ Getter returning the TAPI Link identifier.
+ :return Object identifier as UUID.
+ """
+ return self.__data["uuid"]
+
+ def name(self) -> str:
+ """
+ Getter for TAPI Link name.
+ :return TAPI Link as json object.
+ """
+ return self.__link_configuration.json()['link']['name']
+
+ def svg(self, svg_x: int, svg_y: int) -> etree.Element:
+ """
+ Getter for a xml Element object representing the TAPI Link.
+ :return TAPI Link as svg object.
+ """
+
+ group = etree.Element("g")
+ group.attrib["class"] = "link"
+ title = etree.Element("title")
+ title.text = "\n TAPI Link\n id: " + \
+ self.identifier() + "\n name: " + self.name()
+ group.append(title)
+
+ # cubic bezier curves
+ source_x = self.__link_configuration.consumer_node_edge_point().svg_x()
+ source_y = self.__link_configuration.consumer_node_edge_point().svg_y()
+ target_x = self.__link_configuration.provider_node_edge_point().svg_x()
+ target_y = self.__link_configuration.provider_node_edge_point().svg_y()
+
+ path = etree.Element("path")
+ path.attrib["d"] = " ".join(["M", str(source_x), str(source_y),
+ "C", str(source_x), str(target_y),
+ str(target_x), str(source_y),
+ str(target_x), str(target_y)])
+ path.attrib["class"] = "link"
+ group.append(path)
+
+ return group