some stuff donnerino

.drone.yml

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+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+- name: kaniko
+  image: banzaicloud/drone-kaniko
+  settings:
+    registry: registry.kmlabz.com
+    repo: tormachris/${DRONE_REPO_NAME}
+    username:
+      from_secret: DOCKER_USERNAME
+    password:
+      from_secret: DOCKER_PASSWORD
+    tags:
+      - latest
+      - ${DRONE_BUILD_NUMBER}

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+#Pycharm
+.idea/
+*.iml
+*wav

Dockerfile

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+FROM python:3-slim
+
+ADD mealapi requirements.txt /mealapi/
+WORKDIR /mealapi/
+
+RUN pip3 install -r requirements.txt
+
+ENV GUNICORN_LOGLEVEL="info"
+
+EXPOSE 8000
+CMD ["gunicorn", "-b", "0.0.0.0:8000", "--log-level", "${GUNICORN_LOGLEVEL}", "app:app"]

mealAPI/app.py

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+#!/usr/bin/env python3
+from flask import Flask
+from flask_restful import Api
+from healthcheck import HealthCheck
+from utils import Config, register_all_error_handlers, health_database_status
+from model import db
+from schemas import ma
+from resources import MealBaseResource
+
+app = Flask(__name__)
+app.config.from_object(Config)
+
+api = Api(app)
+health = HealthCheck()
+ma.init_app(app)
+
+
+@app.before_first_request
+def init_db():
+    db.create_all()
+
+
+api.add_resource(MealBaseResource, "/meals")
+
+health.add_check(health_database_status)
+
+register_all_error_handlers(app)
+
+app.add_url_rule("/healthz", "healthcheck", view_func=lambda: health.run())
+
+if __name__ != '__main__':
+    import logging
+
+    gunicorn_logger = logging.getLogger('gunicorn.error')
+    app.logger.handlers = gunicorn_logger.handlers
+    app.logger.setLevel(gunicorn_logger.level)

mealAPI/model/__init__.py

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+from .db import db
+from .meal import Meal
+from .ingredient import Ingredient

mealAPI/model/db.py

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+#!/usr/bin/env python3
+from flask_sqlalchemy import SQLAlchemy
+
+db = SQLAlchemy()

mealAPI/model/ingredient.py

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+#!/usr/bin/env python3
+from .db import db
+from .mealingredient import MealIngredient
+
+
+class Ingredient(db.Model):
+    __tablename__ = 'Ingredient'
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String, nullable=False, unique=True)
+    value = db.Column(db.String, nullable=False)
+    items = db.relationship('Meal', secondary=MealIngredient, back_populates='Ingredient')

mealAPI/model/meal.py

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+#!/usr/bin/env python3
+from .db import db
+from .mealingredient import MealIngredient
+
+
+class Meal(db.Model):
+    __tablename__ = 'Meal'
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(255), nullable=False)
+    description = db.Column(db.Text, nullable=False)
+    kcal = db.Column(db.Integer, nullable=True)
+    price = db.Column(db.Integer, nullable=True)
+    spicy = db.Column(db.Boolean, nullable=False, default=False)
+    vegan = db.Column(db.Boolean, nullable=False, default=False)
+    glutenfree = db.Column(db.Boolean, nullable=False, default=False)
+    ingredients = db.relationship('Ingredient', secondary=MealIngredient, back_populates='Meal')

mealAPI/model/mealingredient.py

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+#!/usr/bin/env python3
+from .db import db
+
+
+class MealIngredient(db.Model):
+    __tablename__ = 'MealIngredient'
+    id = db.Column(db.Integer, primary_key=True, index=True)
+    itemId = db.Column(db.Integer, db.ForeignKey('Meal.id'))
+    detailId = db.Column(db.Integer, db.ForeignKey('Ingredient.id'))

mealAPI/resources/__init__.py

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+from .mealresource import MealBaseResource

mealAPI/resources/mealresource.py

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+#!/usr/bin/env python3
+from flask_restful import Resource
+from flask import request, current_app, abort
+from marshmallow import ValidationError
+
+from ..model import db, Meal
+from ..schemas import MealSchema
+
+
+class MealBaseResource(Resource):
+
+    mealschema = MealSchema(many=False)
+    mealschemas = MealSchema(many=True)
+
+    def post(self):
+        body = request.get_json()
+
+        try:
+            mealobj = self.mealschema.load(body)
+            db.session.add(mealobj.data)
+            db.session.commit()
+            return '', 204
+        except ValidationError:
+            abort(406, "meal validation error")
+
+    def get(self):
+        meals = Meal.query.all()
+        return self.mealschemas.dump(list(meals)), 200

mealAPI/schemas/__init__.py

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+from .marshm import ma
+from .mealschema import MealSchema
+from .ingredientschema import IngredientSchema

mealAPI/schemas/ingredientschema.py

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+#!/usr/bin/env python3
+from .marshm import ma
+from ..model import Ingredient
+
+
+class IngredientSchema(ma.ModelSchema):
+
+    class Meta:
+        model = Ingredient

mealAPI/schemas/marshm.py

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+#!/usr/bin/env python3
+
+from flask_marshmallow import Marshmallow
+
+ma = Marshmallow()

mealAPI/schemas/mealschema.py

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+#!/usr/bin/env python3
+from .marshm import ma
+from ..model import Meal
+from .ingredientschema import IngredientSchema
+
+
+class MealSchema(ma.ModelSchema):
+
+    # A list of author objects
+    authors = ma.Nested(IngredientSchema, many=True)
+
+    class Meta:
+        model = Meal

mealAPI/utils/__init__.py

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+from .config import Config
+from .error_handlers import register_all_error_handlers
+from .healthchecks import health_database_status

mealAPI/utils/config.py

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+#!/usr/bin/env python3
+import os
+
+
+class Config:
+    PORT = 8080
+    DEBUG = os.environ.get("INPUT_SERVICE_DEBUG", "true").lower() in ["true", "yes", "1"]
+
+    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URI')
+    # disable this for better performance
+    SQLALCHEMY_TRACK_MODIFICATIONS = False

mealAPI/utils/error_handlers.py

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+#!/usr/bin/env python3
+
+
+def get_standard_error_handler(code: int):
+    def error_handler(err):
+        return {"msg": str(err)}, code
+
+    return error_handler
+
+
+# function to register all handlers
+
+
+def register_all_error_handlers(app):
+    error_codes_to_override = [404, 403, 401, 405, 400, 409, 422, 500]
+
+    for code in error_codes_to_override:
+        app.register_error_handler(code, get_standard_error_handler(code))

mealAPI/utils/healthchecks.py

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+#!/usr/bin/env python3
+
+from model import db
+
+
+def health_database_status():
+    is_database_working = True
+    output = 'database is ok'
+    try:
+        db.session.execute('SELECT 1')
+    except Exception as e:
+        output = str(e)
+        is_database_working = False
+    return is_database_working, output

requirements.txt

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+gunicorn
+Flask
+Flask-RESTful
+marshmallow
+flask-marshmallow
+Flask-SQLAlchemy
+marshmallow-sqlalchemy
+py-healthcheck
+psycopg2-binary