server.py

# Copyright 2022 Google LLC
#
# 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
#
#     https://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.

import os
from flask import Flask
from flask.json import jsonify
import requests

app = Flask(__name__)

print(os.environ)

@app.route("/")
def hello_world():
    if 'NEXT_SERVER' in os.environ.keys():
        try:
            json = requests.get(os.environ['NEXT_SERVER'], timeout=10).json()
            return json
        except requests.RequestException as e:
            return jsonify({"error": e})
    else:
        return jsonify({"data": "Hello world"})