added

carpool/.dockerignore

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+docker-compose.yml
+*.sql
+.dockerignore
+*.json
+Dockerfile

carpool/Dockerfile

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+# syntax=docker/dockerfile:1
+FROM python:3.8-slim-buster
+ARG DEBIAN_FRONTEND=noninteractive
+ARG DEBCONF_NOWARNINGS="yes"
+WORKDIR /app
+COPY requirements.txt requirements.txt
+RUN pip3 install --disable-pip-version-check -r requirements.txt
+COPY . .
+ENV FLASK_APP=python_rest
+EXPOSE 5000
+STOPSIGNAL SIGINT
+CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"]

carpool/car_1.json

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+{
+  "license_plate": "BO-PR-72",
+  "car_type": "mini clubman SD",
+  "fuel": "diesel",
+  "number_of_seats": "5"
+}

carpool/car_2.json

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+{
+  "license_plate": "BO-PR-46",
+  "car_type": "bmw",
+  "fuel": "benzin",
+  "number_of_seats": "5"
+}

carpool/docker-compose.yml

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+version: "3.3"
+services:
+  traefik:
+    image: "traefik:v2.8"
+    container_name: "traefik"
+    command:
+      #- "--log.level=DEBUG"
+      - "--api.insecure=true"
+      - "--providers.docker=true"
+      - "--providers.docker.exposedbydefault=false"
+      - "--entrypoints.web.address=:80"
+    ports:
+      - "80:80"
+      - "8080:8080"
+    volumes:
+      - "/var/run/docker.sock:/var/run/docker.sock:ro"
+  rest:
+    build: .
+    image: bee42/carpool:0.1.0
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.car.rule=Host(`car.localhost`)"
+      - "traefik.http.routers.car.entrypoints=web"
+      - "traefik.http.services.car.loadbalancer.server.port=5000"
+    environment:
+      FLASK_APP: python_rest
+      POSTGRES_DB: esentricar
+      POSTGRES_USER: cnbc
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_HOST: postgres
+  postgres:
+    image: postgres
+    container_name: postgres
+    restart: always
+    environment:
+      POSTGRES_DB: postgres_db
+      POSTGRES_USER: cnbc
+      POSTGRES_PASSWORD: postgres
+      PGDATA: /var/lib/postgresql/data/pgdata
+    volumes:
+      - postgres:/var/lib/postgresql/data
+      - ./esentricar.sql:/docker-entrypoint-initdb.d/esentricar.sql
+volumes:
+  postgres:

carpool/esentricar.sql

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+CREATE DATABASE esentricar;
+\c  esentricar;
+CREATE TABLE cars (
+  car_id          SERIAL PRIMARY KEY,
+  license_plate   varchar(30)             NOT NULL,
+  car_type        varchar(30)             NOT NULL,
+  fuel            varchar(30)             NOT NULL,
+  number_of_seats integer                 NOT NULL
+);
+CREATE UNIQUE INDEX cars_license_plate
+ON cars (license_plate);

carpool/index.env

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+POSTGRES_PASSWORD=postgres

carpool/python_rest.py

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+from flask import Flask, request, jsonify
+from flask_sqlalchemy import SQLAlchemy
+from flask_marshmallow import Marshmallow, fields
+from flask_cors import CORS
+
+import os
+
+# Init app
+app = Flask(__name__)
+
+user = os.environ.get('POSTGRES_USER')
+db = os.environ.get('POSTGRES_DB')
+passwd = os.environ.get('POSTGRES_PASSWORD')
+host = os.environ.get('POSTGRES_HOST')
+
+#enable CORS 
+CORS(app)
+# connect to already existing and running Database
+app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql://' + user + ':' + passwd +'@' + host + ':5432/' + db
+
+# not important but otherwise we get a warning every time
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+
+#Init db
+db = SQLAlchemy(app)
+#Init ma
+ma = Marshmallow(app)
+
+# Pool Car Class/Model
+class Pool_Car(db.Model):
+
+    #define table, in our case already existing
+    __tablename__ = 'cars'
+    car_id =         db.Column(db.Integer, primary_key=True)
+    license_plate =  db.Column(db.String(30), unique=True)
+    car_type =       db.Column(db.String(20))
+    fuel =           db.Column(db.String(20))
+    number_of_seats =db.Column(db.Integer)
+
+
+    # set class attributes
+    def __init__(self, license_plate, car_type, fuel, number_of_seats):
+        self.license_plate = license_plate
+        self.car_type   = car_type
+        self.fuel       = fuel
+        self.number_of_seats = number_of_seats
+
+class Pool_CarSchema(ma.Schema):
+    class Meta:
+        fields = ('car_id','license_plate','car_type','fuel','number_of_seats')
+
+# Init schema
+pool_car_schema = Pool_CarSchema()
+pool_cars_schema = Pool_CarSchema(many=True)
+
+
+# Create a Pool_Car
+@app.route('/car', methods=['POST'])
+def add_pool_car():
+  # Get request data as json
+  car_entity = request.get_json()
+  license_plate= car_entity.get('license_plate')
+  car_type = car_entity.get('car_type')
+  fuel = car_entity.get('fuel')
+  number_of_seats = car_entity.get('number_of_seats')
+
+  new_pool_car = Pool_Car(license_plate, car_type, fuel, number_of_seats)
+
+  db.session.add(new_pool_car)
+  db.session.commit()
+  
+  return pool_car_schema.jsonify(new_pool_car)
+
+# Get car_id,license_plate,car_type of all products of the table
+@app.route('/car', methods=['GET'])
+def get_pool_cars():
+  all_pool_cars = Pool_Car.query.all()
+  result = pool_cars_schema.dump(all_pool_cars)
+  car_list= []
+  for item in result:
+          car_details = { "car_id":None, "license_plate":None, "car_type":None}
+          car_details['car_id'] = item['car_id']
+          car_details['license_plate'] = item['license_plate']
+          car_details['car_type'] = item['car_type']
+          car_list.append(car_details)
+  return jsonify(car_list)
+
+# Get Single Products
+@app.route('/car/<car_id>', methods=['GET'])
+def get_pool_car(car_id):
+  pool_car = Pool_Car.query.get(car_id)
+  return pool_car_schema.jsonify(pool_car)
+
+# Delete Product
+@app.route('/car/<car_id>', methods=['DELETE'])
+def delete_pool_car(car_id):
+  pool_car = Pool_Car.query.get(car_id)
+  db.session.delete(pool_car)
+  db.session.commit()
+
+  return pool_car_schema.jsonify(pool_car)
+
+
+if __name__ == '__main__':
+  app.run(debug=True) #port='5002'

carpool/requirements.txt

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+Flask==1.1.1 
+Flask-Cors==3.0.8
+flask-marshmallow==0.10.1 
+Flask-SQLAlchemy==2.4.1 
+werkzeug==2.0.2
+marshmallow==3.2.2 
+SQLAlchemy==1.3.11 
+marshmallow-sqlalchemy==0.19.0 
+psycopg2-binary==2.8.4
+itsdangerous==2.0.1
+Jinja2==3.0.3