Adding full docker development (& prod) files, including docker-compose, and updating to 12-factor

Dockerfile

@@ -0,0 +1,77 @@
+# Multi-stage unique docker build script, provides both dev & prod environments
+
+# ----------------------------------------------------
+# Base-image
+# ----------------------------------------------------
+FROM python:3.9-slim-buster as common-base
+# Django directions: https://blog.ploetzli.ch/2020/efficient-multi-stage-build-django-docker/
+# Pip on docker : https://pythonspeed.com/articles/multi-stage-docker-python/
+# https://blog.mikesir87.io/2018/07/leveraging-multi-stage-builds-single-dockerfile-dev-prod/
+# https://pythonspeed.com/articles/base-image-python-docker-images/
+
+# Default environment: Dev
+ARG ENV=dev
+
+ENV PYTHONFAULTHANDLER=1 \
+    PYTHONUNBUFFERED=1 \
+    PYTHONHASHSEED=random \
+    PIP_NO_CACHE_DIR=off \
+    PIP_DISABLE_PIP_VERSION_CHECK=on \
+    PIP_DEFAULT_TIMEOUT=100
+
+ENV HOST=0.0.0.0 \
+    PORT=8000
+
+WORKDIR /app
+
+COPY ./docker/install-packages.sh .
+RUN ./install-packages.sh
+
+# ----------------------------------------------------
+# Install dependencies
+# ----------------------------------------------------
+FROM common-base AS dependencies
+ENV PATH="/opt/venv/bin:$PATH"
+
+#     apt-get install build-essential -y
+COPY requirements.txt /app/
+
+RUN pip install --target /opt/packages -r requirements.txt
+
+# ----------------------------------------------------
+# Copy project
+# ----------------------------------------------------
+FROM common-base AS app-run
+COPY --from=dependencies /opt/packages /opt/packages
+ENV PYTHONPATH "${PYTHONPATH}:/opt/packages"
+# ENV  PYTHONPATH="$PYTHONPATH:/app/lemarche:/app/config"
+COPY ./ark ./ark
+COPY ./ark_import ./ark_import
+COPY ./arklet ./arklet
+COPY ./manage.py ./manage.py
+COPY ./docker/entrypoint.sh ./entrypoint.sh
+
+# ----------------------------------------------------
+# Run Dev
+# ----------------------------------------------------
+FROM app-run AS dev
+ENV ENV="dev" \
+    ARKLET_DEBUG="True"
+
+CMD ["bash"]
+
+# ----------------------------------------------------
+# Run Prod
+# ----------------------------------------------------
+FROM app-run AS prod
+ENV ENV="prod" \
+    ARKLET_DEBUG="False"
+
+CMD ["./entrypoint.sh"]
+
+# # For some _real_ performance, at cost of ease of use:
+# FROM python:3.9-alpine as prod
+# ENV PATH="/opt/venv/bin:$PATH"
+# COPY . .
+# RUN apk add python3-dev build-base linux-headers pcre-dev
+# RUN pip install uwsgi

README.md

@@ -6,12 +6,19 @@ See https://arks.org/
 ## What is Arklet?
 Arklet is a Python Django application for minting, binding, and resolving ARKs. It is intended to follow best practices set out by https://arks.org/.
 
-## Running Locally with Postgres
+## Running
 
-Create the default config YAML file: **/etc/arklet.yml** 
+### Locally with Postgres
 
-- Set a value for **ARKLET_DJANGO_SECRET_KEY**.
-- For local development, set **ARKLET_DEBUG** to True. 
+Create the default `.env` file in the project's root directory
+
+```
+# /!\ Set your own secret key /!\
+ARKLET_DJANGO_SECRET_KEY=[YOUR_SECRET]
+
+# For local development, set to True
+ARKLET_DEBUG=True
+```
 
 Run Postgres, install into virtual environment, and start the app:
 ```
@@ -29,11 +36,73 @@ python manage.py createsuperuser
 python manage.py runserver
 ```
 
+### Separate dockers
+Using docker, we can use a [this provided](./docker/env.docker.local) config file.
+
+See above for running PostgreSQL, and run the **Arklet** docker as follows (in *bash*):
+```
+docker build \
+    --target dev \
+    -t "arklet" -f ./Dockerfile . \
+    --build-arg ENV=DEV \
+&& docker run --rm -it \
+    -p 8000:8000 \
+    --env-file=./docker/env.docker.local \
+    -e ARKLETDEBUG="true" \
+    --name arklet \
+    -v `pwd`/ark:/app/ark \
+    -v `pwd`/ark_import:/app/ark_import \
+    -v `pwd`/arklet:/app/arklet \
+    arklet
+```
+
+### With docker-compose
+Using the provided `docker-compose.yml` with default settings in the [docker
+configuration directory](./docker) :
+
+```
+docker-compose up
+```
+
+By default, the folders `ark`, `ark_import` and `arklet` are mounted in the
+container. Should you wish to attach a console to the `arklet` container (needed
+to create the django superuser) :
+```
+# In another shell
+docker exec -it arklet_django /bin/bash
+# You're now in the docker container
+./manage.py createsuperuser
+```
+
+### First steps
 Create your first NAAN, Key, and Shoulder in the admin:
 127.0.0.1:8000/admin
 
+And by the way, you now host a working ARK resolver! You can already
+try the following ones :
+- [http://127.0.0.1:8000/ark:/13960/t5n960f7n](http://127.0.0.1:8000/ark:/13960/t5n960f7n)
+- [http://127.0.0.1:8000/ark:/67375/C0X-SPWFRSGR-N](http://127.0.0.1:8000/ark:/67375/C0X-SPWFRSGR-N)
+- [http://127.0.0.1:8000/ark:/12148/bpt6k65358454](http://127.0.0.1:8000/ark:/12148/bpt6k65358454)
+- ...
+
 Happy minting, binding, and resolving!
 
 ## Configuration Options
 
-See arklet/settings.py for the full list of options to put in your config file.
+See arklet/settings.py for the full list of options to put in your config file.
+
+## Deploying
+### With docker
+Using the provided Dockerfile (is you wish to set a build target, use `prod`, 
+but being the default target you can skip this), provide the following values
+in your environment:
+
+- ARKLET_DJANGO_SECRET_KEY=[YOUR_SECRET]
+- ARKLET_DEBUG=False
+- ARKLET_HOST=0.0.0.0
+- ARKLET_PORT=[Port of choice]
+- ARKLET_POSTGRES_NAME=[DB NAME]
+- ARKLET_POSTGRES_USER=[DB USER]
+- ARKLET_POSTGRES_PASSWORD=[DB PASS]
+- ARKLET_POSTGRES_HOST=[DB HOST]
+- ARKLET_POSTGRES_PORT=[DB PORT]

ark/views.py

@@ -163,10 +163,9 @@ def resolve_ark(request, ark: str):
         return HttpResponseRedirect(ark.url)
     except Ark.DoesNotExist:
         try:
-            naan = Naan.objects.get(naan=naan)
-            resolver = naan.url or "https://n2t.net"
-            # TODO: more robust resolver URL creation
-            return HttpResponseRedirect(f"{resolver}/ark:/{naan.naan}/{assigned_name}")
+            naan_obj = Naan.objects.get(naan=naan)
+            return HttpResponseRedirect(f"{naan_obj.url}/ark:/{naan_obj.naan}/{assigned_name}")
         except Naan.DoesNotExist:
-            # TODO: make nice page saying we don't know about the ARK or NAAN
-            raise Http404
+            resolver = "https://n2t.net"
+            # TODO: more robust resolver URL creation
+            return HttpResponseRedirect(f"{resolver}/ark:/{naan}/{assigned_name}")

arklet/settings.py

@@ -16,11 +16,22 @@
 import sentry_sdk
 from sentry_sdk.integrations.django import DjangoIntegration
 import yaml
-
-
-with open(os.environ.get("ARKLET_CONF", "/etc/arklet.yml")) as f:
-    conf = yaml.safe_load(f)
-
+import environ
+
+env = environ.Env(
+    # set default values
+    ARKLET_HOST=(str, "127.0.0.1"),
+    ARKLET_DEBUG=(bool, False),
+    ARKLET_POSTGRES_NAME=(str, "arklet"),
+    ARKLET_POSTGRES_HOST=(str, "127.0.0.1"),
+    ARKLET_POSTGRES_PORT=(str, "5432"),
+    ARKLET_POSTGRES_USER=(str, "arklet"),
+    ARKLET_POSTGRES_PASSWORD=(str, "arklet"),
+    ARKLET_SENTRY_DSN=(str, ""),
+    ARKLET_SENTRY_TRANSACTIONS_PER_TRACE=(int, 1),
+    ARKLET_STATIC_ROOT=(str, "static"),
+    ARKLET_MEDIA_ROOT=(str, "media"),
+)
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
 
@@ -29,13 +40,13 @@
 # See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = conf["ARKLET_DJANGO_SECRET_KEY"]  # Intentionally no default value
+SECRET_KEY = env.str("ARKLET_DJANGO_SECRET_KEY")  # Intentionally no default value
 
 # SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = conf.get("ARKLET_DEBUG", False)
+DEBUG = env("ARKLET_DEBUG")
 
 ALLOWED_HOSTS = [
-    conf.get("ARKLET_HOST", "127.0.0.1"),
+    env("ARKLET_HOST"),
     "wbgrp-svc302.us.archive.org",
     "qa-ark.archive.org",
     "ark.archive.org",
@@ -107,11 +118,11 @@
         # "ENGINE": "django.db.backends.sqlite3",
         # "NAME": BASE_DIR / "db.sqlite3",
         "ENGINE": "django.db.backends.postgresql",
-        "NAME": conf.get("ARKLET_POSTGRES_NAME", "arklet"),
-        "HOST": conf.get("ARKLET_POSTGRES_HOST", "127.0.0.1"),
-        "PORT": conf.get("ARKLET_POSTGRES_PORT", "5432"),
-        "USER": conf.get("ARKLET_POSTGRES_USER", "arklet"),
-        "PASSWORD": conf.get("ARKLET_POSTGRES_PASSWORD", "arklet"),
+        "NAME": env("ARKLET_POSTGRES_NAME"),
+        "HOST": env("ARKLET_POSTGRES_HOST"),
+        "PORT": env("ARKLET_POSTGRES_PORT"),
+        "USER": env("ARKLET_POSTGRES_USER"),
+        "PASSWORD": env("ARKLET_POSTGRES_PASSWORD"),
         "DISABLE_SERVER_SIDE_CURSORS": True,
     }
 }
@@ -158,17 +169,17 @@
 
 STATIC_URL = "/static/"
 
-STATIC_ROOT = conf.get("ARKLET_STATIC_ROOT")
+STATIC_ROOT = env.str("ARKLET_STATIC_ROOT")
 
-MEDIA_ROOT = conf.get("ARKLET_MEDIA_ROOT")
+MEDIA_ROOT = env.str("ARKLET_MEDIA_ROOT")
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
 
-SENTRY_DSN = conf.get("ARKLET_SENTRY_DSN", "")
-SENTRY_SAMPLE_RATE = 1 / int(conf.get("ARKLET_SENTRY_TRANSACTIONS_PER_TRACE", 1))
+SENTRY_DSN = env("ARKLET_SENTRY_DSN")
+SENTRY_SAMPLE_RATE = 1 / int(env("ARKLET_SENTRY_TRANSACTIONS_PER_TRACE"))
 sentry_sdk.init(
     dsn=SENTRY_DSN,
     integrations=[DjangoIntegration()],

docker-compose.yml

@@ -0,0 +1,35 @@
+version: "3.7"
+
+services:
+  postgres:
+    container_name: arkled_db
+    image: postgres:14-alpine
+    env_file:
+      - ./docker/env.docker.local
+    volumes:
+      - postgres:/var/lib/postgresql/data
+    restart: always
+    ports:
+      - "5432:5432"
+
+  arklet:
+    container_name: arklet_django
+    restart: always
+    build:
+        context: .
+        target: dev
+        dockerfile: ./Dockerfile
+    command: /app/entrypoint.sh
+    volumes:
+      - ./ark:/app/ark
+      - ./ark_import:/app/ark_import
+      - ./arklet:/app/arklet
+    env_file:
+      - ./docker/env.docker.local
+    ports:
+      - "8000:8000"
+    depends_on:
+      - postgres
+
+volumes:
+  postgres: