From 2cffca4023bf15d84165f9e4722c4d596d60cf6c Mon Sep 17 00:00:00 2001
From: Maxime Bloch <maxime.bloch@ugent.be>
Date: Thu, 23 Jul 2020 14:07:31 +0200
Subject: [PATCH] Add crude basis for docker

---
 Dockerfile         | 12 ++++++++++
 KeRS/celery.py     |  5 +++--
 KeRS/settings.py   | 37 +++++++++++++++++++++---------
 docker-compose.yml | 56 ++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 98 insertions(+), 12 deletions(-)
 create mode 100644 Dockerfile
 create mode 100644 docker-compose.yml

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..c9f3db7
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,12 @@
+FROM python:3.8-alpine
+
+RUN mkdir code
+WORKDIR code
+
+RUN apk add --no-cache gcc musl-dev linux-headers mariadb-dev
+
+
+COPY requirements.txt requirements.txt
+RUN pip install -r requirements.txt
+
+COPY . .
diff --git a/KeRS/celery.py b/KeRS/celery.py
index 87043b6..95627c1 100644
--- a/KeRS/celery.py
+++ b/KeRS/celery.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import, unicode_literals
+from django.conf import settings
 
 import os
 
@@ -8,8 +9,8 @@ from celery import Celery
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'KeRS.settings')
 
 app = Celery('KeRS',
-             broker='redis://localhost:6379/0',
-             backend='redis://localhost:6379/1'
+             broker=settings.CELERY_BROKER,
+             backend=settings.CELERY_BACKEND
              )
 
 # Using a string here means the worker doesn't have to serialize
diff --git a/KeRS/settings.py b/KeRS/settings.py
index 28e4841..0a854d7 100644
--- a/KeRS/settings.py
+++ b/KeRS/settings.py
@@ -12,6 +12,18 @@ https://docs.djangoproject.com/en/3.0/ref/settings/
 
 import os
 
+from django.core.exceptions import ImproperlyConfigured
+
+
+def get_env_value(env_variable, default):
+    try:
+        return os.environ[env_variable]
+    except KeyError:
+        return default
+        # error_msg = 'Set the {} environment variable'.format(env_variable)
+        # raise ImproperlyConfigured(error_msg)
+
+
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
@@ -32,6 +44,7 @@ OWN_APPS = [
     'events',
     'users',
     'oauth',
+    'core'
 ]
 
 INSTALLED_APPS = [
@@ -81,11 +94,11 @@ WSGI_APPLICATION = 'KeRS.wsgi.application'
 DATABASES = {
     'default': {
         'ENGINE':   'django.db.backends.mysql',
-        'NAME':     'kers',
-        'USER':     'kers',
-        'PASSWORD': 'kers',
-        'HOST':     '127.0.0.1',
-        'PORT':     '3306',
+        'NAME':     get_env_value('DATABASE_NAME', 'kers'),
+        'USER':     get_env_value('DATABASE_USER', 'kers'),
+        'PASSWORD': get_env_value('DATABASE_PASSWORD', 'kers'),
+        'HOST':     get_env_value('DATABASE_HOST', '127.0.0.1'),
+        'PORT':     get_env_value('DATABASE_PORT', '3306'),
     }
 }
 
@@ -128,6 +141,10 @@ STATICFILES_DIRS = [
     os.path.join(BASE_DIR, "static"),
 ]
 
+# Celery
+
+CELERY_BROKER = get_env_value('CELERY_BROKER', 'redis://localhost:6379/0')
+CELERY_BACKEND = get_env_value('CELERY_BACKEND', 'redis://localhost:6379/1')
 # Custom stuff
 
 SERVER_URL = 'http://localhost:8000'
@@ -137,10 +154,10 @@ AUTH_USER_MODEL = 'users.CustomUser'
 _BASE_OAUTH_URL = 'https://adams.ugent.be/oauth'
 
 OAUTH = {
-    'USER_API_URI': f'{_BASE_OAUTH_URL}/api/current_user/',
+    'USER_API_URI':     f'{_BASE_OAUTH_URL}/api/current_user/',
     'ACCESS_TOKEN_URI': f'{_BASE_OAUTH_URL}/oauth2/token/',
-    'AUTHORIZE_URI': f'{_BASE_OAUTH_URL}/oauth2/authorize/',
-    'REDIRECT_URI': f'{SERVER_URL}/login/zeus/authorized',
-    'CLIENT_ID': 'tomtest',
-    'CLIENT_SECRET': 'blargh',
+    'AUTHORIZE_URI':    f'{_BASE_OAUTH_URL}/oauth2/authorize/',
+    'REDIRECT_URI':     f'{SERVER_URL}/login/zeus/authorized',
+    'CLIENT_ID':        'tomtest',
+    'CLIENT_SECRET':    'blargh',
 }
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..cf70fbc
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,56 @@
+version: '3'
+services:
+  web:
+    build: .
+    ports:
+      - "8000:8000"
+    environment:
+      DATABASE_HOST: 'db'
+      CELERY_BROKER: 'redis://redis:6379/0'
+      CELERY_BACKEND: 'redis://redis:6379/1'
+    depends_on:
+      - db
+    command: >
+      sh -c "sleep 5 &&
+             python manage.py migrate &&
+             python manage.py runserver 0.0.0.0:8000"
+  celery-worker:
+    build: .
+    environment:
+      DATABASE_HOST: 'db'
+      CELERY_BROKER: 'redis://redis:6379/0'
+      CELERY_BACKEND: 'redis://redis:6379/1'
+    depends_on:
+      - web
+      - redis
+    command: >
+      sh -c "celery -A KeRS worker -l info"
+  celery-beat:
+    build: .
+    environment:
+      DATABASE_HOST: 'db'
+      CELERY_BROKER: 'redis://redis:6379/0'
+      CELERY_BACKEND: 'redis://redis:6379/1'
+    depends_on:
+      - web
+      - redis
+    command: >
+      sh -c "celery -A KeRS beat -l info --scheduler django_celery_beat.schedulers:DatabaseScheduler"
+  redis:
+    image: redis
+  # Db stuff
+  db:
+    image: mysql
+    command: --default-authentication-plugin=mysql_native_password
+    environment:
+      MYSQL_ROOT_PASSWORD: example
+      MYSQL_DATABASE: kers
+      MYSQL_USER: kers
+      MYSQL_PASSWORD: kers
+  # DB visual panel
+  adminer:
+    image: adminer
+    depends_on:
+      - db
+    ports:
+      - 8080:8080