WebUI component:

# See the License for the specific language governing permissions and

# limitations under the License.

import base64, json, logging, re

import base64, json, logging #, re

from flask import jsonify, redirect, render_template, Blueprint, flash, session, url_for, request

from common.proto.context_pb2 import ContextList, Empty, TopologyId, TopologyList

from common.tools.descriptor.Loader import DescriptorLoader, compose_notifications

def home():

    context_client.connect()

    device_client.connect()

    context_topology_form: ContextTopologyForm = ContextTopologyForm()

    context_topology_form = ContextTopologyForm()

    context_topology_form.context_topology.choices.append(('', 'Select...'))

    contexts : ContextList = context_client.ListContexts(Empty())

            #session['topology_name'] = topology_name

            MSG = f'Context({context_name})/Topology({topology_name}) successfully selected.'

            flash(MSG, 'success')

            context_client.close()

            device_client.close()

            return redirect(url_for('main.home'))

            #match = re.match('ctx\[([^\]]+)\]\/topo\[([^\]]+)\]', context_topology_uuid)

    if 'context_topology_uuid' in session:

        context_topology_form.context_topology.data = session['context_topology_uuid']

    descriptor_form: DescriptorForm = DescriptorForm()

    descriptor_form = DescriptorForm()

    try:

        if descriptor_form.validate_on_submit():

            process_descriptors(descriptor_form.descriptors)