start.sh

#!/bin/bash
# Copyright 2022-2024 ETSI SDG TeraFlowSDN (TFS) (https://tfs.etsi.org/)
#
# 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.

cd "$(dirname "$0")"

# Ensure the local bin directory is in the PATH
export PATH=$PATH:/home/gitlab-runner/.local/bin

# Function to kill all background processes
killbg() {
    for p in "${pids[@]}" ; do
        kill "$p" 2>/dev/null;
    done
}

trap killbg EXIT
pids=()

# Set FLASK_APP and run the Flask instances on different ports
export FLASK_APP=wsgi

# Starting Flask instances on different ports
for port in 11111 22222 33333; do
    flask run --host 0.0.0.0 --port "$port" &
    pids+=($!)
    sleep 2 # To avoid conflicts during startup, giving each Flask instance time to initialize
done

# Wait for all background processes to finish
wait