CI, celery, compose setup, hackity hack hack

.drone.yml

@@ -1,10 +1,6 @@
 ---
 matrix:
   include:
-    - IMAGE: 3.6-stretch
-      TOXENV: py36
-    - IMAGE: 3.7-stretch
-      TOXENV: py37
     - IMAGE: 3.8-buster
       TOXENV: py38
     - IMAGE: 3.8-buster
@@ -15,14 +11,10 @@ matrix:
       TOXENV: format
     - IMAGE: 3.8-buster
       TOXENV: type
-    - IMAGE: 3.8-buster
-      TOXENV: docs
-    - IMAGE: 3.8-buster
-      TOXENV: metadata-release
 
 pipeline:
   build:
     image: python:${IMAGE}
     commands:
-      - pip install tox==3.14.6
+      - pip install tox
       - tox -e ${TOXENV}

.envrc.sample

@@ -1,6 +1,7 @@
-export CELERY_BROKER_URL=redis://localhost:6379/1
+export CELERY_BROKER_URL=redis://localhost:6379
-export CELERY_RESULT_BACKEND=redis://localhost:6379/1
+export CELERY_RESULT_BACKEND=redis://localhost:6379
-export ENV=development
+export FLASK_ENV=development
+export FLASK_APP=wsgi:app
 export REDIS_HOST=localhost
 export REDIS_PORT=6379
 export REDIS_SESSION_DB=0

Dockerfile

@@ -7,20 +7,23 @@ WORKDIR ${APP_ROOT}
 COPY . ${APP_ROOT}
 
 RUN apk add --update \
-  build-base   \
+  build-base \
-  curl         \
+  curl \
-  git          \
+  git \
-  libffi-dev   \
+  libffi-dev \
-  libsasl      \
+  libsasl \
+  openssl-dev \
   python3-dev
 
-
 RUN addgroup -S ${CELERY_USER}
-RUN adduser -D         \
+RUN adduser -D \
-  -h ${APP_ROOT}       \
+  -h ${APP_ROOT} \
   -s /usr/sbin/nologin \
-  -G ${CELERY_USER} ${CELERY_USER}
+  -G ${CELERY_USER} \
+  ${CELERY_USER}
 
 RUN pip install "poetry>=1.0.9,<2.0"
 
-RUN poetry install
+RUN poetry install \
+  --no-dev \
+  --no-interaction

README.md

@@ -4,4 +4,8 @@ A swarm of dreams.
 
 # Development
 
-TODO.
+```
+$ docker-compose up
+```
+
+Then see http://localhost:5000.

celworker.py

@@ -4,6 +4,6 @@ from os import environ
 from magic_app.app import celery, create_app  # noqa
 from magic_app.config import CONFIG
 
-config = CONFIG[environ["ENV"]]
+config = CONFIG[environ["FLASK_ENV"]]
 app = create_app(config=config)
 app.app_context().push()

docker-compose.yml

@@ -0,0 +1,36 @@
+---
+version: "3.8"
+
+x-env: &env
+  environment:
+    CELERY_BROKER_URL: "redis://redis:6379"
+    CELERY_RESULT_BACKEND: "redis://redis:6379"
+    FLASK_APP: "wsgi:app"
+    FLASK_ENV: "development"
+    REDIS_HOST: "redis"
+    REDIS_PORT: "6379"
+    REDIS_SESSION_DB: "0"
+
+services:
+  flask:
+    build: .
+    <<: *env
+    ports:
+      - "5000:5000"
+    command: |
+      poetry run 
+      flask run --host 0.0.0.0
+    volumes:
+      - "./:/magic_app/"
+
+  celery:
+    build: .
+    <<: *env
+    command: |
+      poetry run 
+      celery worker -A celworker.celery -B -l debug
+    volumes:
+      - "./:/magic_app/"
+
+  redis:
+    image: redis:alpine

magic_app/app.py

@@ -7,7 +7,9 @@ from redis import Redis
 
 from magic_app.config import Base, Production
 
-celery = Celery(__name__, broker=Base.CELERY_BROKER_URL)
+celery = Celery(
+    __name__, backend=Base.CELERY_RESULT_BACKEND, broker=Base.CELERY_BROKER_URL
+)
 
 
 def create_app(config=Production):
@@ -15,8 +17,7 @@ def create_app(config=Production):
     app = Flask(__name__.split(".")[0])
     app.config.from_object(config)
 
-    celery.conf.update(app.config)
+    configure_celery(app)
-
     configure_redis(app)
     configure_views(app)
     configure_logging(app)
@@ -28,11 +29,11 @@ def configure_redis(app):
     """Configure Redis connection."""
     from magic_app.session import RedisSessionDB
 
-    host = (Base.REDIS_HOST,)
+    host = Base.REDIS_HOST
-    port = (Base.REDIS_PORT,)
+    port = Base.REDIS_PORT
     db_num = Base.REDIS_SESSION_DB
 
-    if app.debug:
+    if app.testing:
         from fakeredis import FakeRedis
 
         connection = FakeRedis()
@@ -42,6 +43,18 @@ def configure_redis(app):
     app.config["SESSION"] = RedisSessionDB(connection)
 
 
+def configure_celery(app):
+    """Configure celery."""
+    celery.conf.update(app.config)
+
+    class ContextTask(celery.Task):
+        def __call__(self, *args, **kwargs):
+            with app.app_context():
+                return self.run(*args, **kwargs)
+
+    celery.Task = ContextTask
+
+
 def configure_views(app):
     """Configure API resource views."""
     from magic_app.views import home

magic_app/config.py

@@ -25,14 +25,16 @@ class Development(Base):
     """The Development configuration."""
 
     ENV = "development"
-    DEBUG = True
+
     CELERY_ALWAYS_EAGER = True
+    DEBUG = True
 
 
 class Testing(Base):
     """The testing configuration."""
 
     ENV = "testing"
+    TESTING = True
 
 
 class Production(Base):

magic_app/views.py

@@ -6,4 +6,5 @@ home = Blueprint("home", __name__)
 
 @home.route("/")
 def hello_world():
+
     return "Hello, World"

pyproject.toml

@@ -16,7 +16,8 @@ keywords = ["docker", "swarm", "packaging"]
 celery = "^4.4.6"
 flask = "^1.1.2"
 flask-wtf = "^0.14.3"
-python = "^3.6"
+gunicorn = "^20.0.4"
+python = "^3.8"
 redis = "^3.5.3"
 
 [tool.poetry.dev-dependencies]

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    {py36,py37,py38}
+    py38
     lint
     sort
     format
@@ -9,12 +9,6 @@ skip_missing_interpreters = True
 isolated_build = True
 
 [testenv]
-description = run the unit tests
-deps =
-  pytest
-  pytest-cov
-  pytest-mock
-commands = pytest test/ --cov={toxinidir}/magic_app/ --no-cov-on-fail {posargs}
 
 [testenv:lint]
 description = lint the source
@@ -26,25 +20,23 @@ commands = flake8 {posargs} magic_app/ test/
 description = sort the source
 skipdist = True
 deps = isort
-commands = isort {posargs:-rc -c} -sp setup.cfg magic_app/ test/
+commands = isort {posargs:-c} -sp setup.cfg magic_app/ test/
 
 [testenv:format]
 description = format the source
 skipdist = True
-basepython = python3.8
 deps = black
 commands = black {posargs:--check} magic_app/ test/
 
 [testenv:type]
 description = type check the source
-basepython = python3.8
 skipdist = True
 deps = mypy
 commands = mypy magic_app/ test/
 
 [testenv:release]
 description = make a release
-deps = {[testenv:metadata-release]deps}
+deps = twine
 commands =
     rm -rf {toxworkdir}/dist
     python -m setup sdist --dist-dir {toxworkdir}/dist bdist_wheel

wsgi.py

@@ -4,5 +4,5 @@ import os
 from magic_app.app import create_app
 from magic_app.config import CONFIG
 
-config = CONFIG[os.environ["ENV"]]
+config = CONFIG[os.environ["FLASK_ENV"]]
 app = create_app(config=config)