Microblog

Based on tutorial

Improvements here are following:

Seeding database via flask CLI
Different query for followed_posts()
Additional errors handler
Few custom helpers for Views and Controllers
Complete Vagrant configuration
Additional database constraints
Additional tests
Complete docker-compose infrastructure

Run smtp daemon

venv\scripts\activate
export MAIL_SERVER=localhost
export MAIL_PORT=8025
...
python -m smtpd -n -c DebuggingServer localhost:8025

Gmail account

venv\scripts\activate
export MAIL_SERVER=smtp.googlemail.com
export MAIL_PORT=587
export MAIL_USE_TLS=1
export MAIL_USERNAME=<your-gmail-username>
export MAIL_PASSWORD=<your-gmail-password>

Babel

pybabel extract -F babel.cfg -k _l -o messages.pot .
pybabel init -i messages.pot -d app/translations -l ru
pybabel compile -d app/translations
pybabel update -i messages.pot -d app/translations

Test Redis

Start the worker

rq worker microblog-tasks

Enqueue the task

from redis import Redis
import rq
queue = rq.Queue('microblog-tasks', connection=Redis.from_url('redis://'))
job = queue.enqueue('app.tasks.example', 10) # func, param
job.get_id()
job.refresh()
job.meta.get('progress', 0)
dir(job)

Test Elasticsearch

from elasticsearch import Elasticsearch
es = Elasticsearch('http://localhost:9200')
es.index(index='my_index', doc_type='my_index', id=1, body={'text': 'this is a test'})
es.index(index='my_index', doc_type='my_index', id=2, body={'text': 'this is a second test'})
es.indices.refresh(index='my_index')
es.search(index='my_index', doc_type='my_index', body={'query': {'match': {'text': 'this is'}}})
es.indices.delete('my_index')

Or directly with curl

curl -XPOST 'localhost:9200/_search?pretty' -d '{"query":{"multi_match":{"query":"this is","fields":["*"],"lenient":true}},"size":15,"from":0}'

Vagrant

Start

vagrant up

Play (accept self-signed certificate)

http://192.168.33.10/

There are four built-in users:

john
susan
mary
david

The password is the same as the login.

Destroy

vagrant destroy -f

Heroku

git clone ...
heroku login
heroku apps:create flask-microblog
git remote -v
heroku addons:add heroku-postgresql:hobby-dev
heroku config:set LOG_TO_STDOUT=1
heroku addons:create searchbox:starter # elasticsearch addon
heroku addons:create heroku-redis:hobby-dev # redis addon
heroku config:get SEARCHBOX_URL
heroku config:set ELASTICSEARCH_URL=...
heroku config:set FLASK_APP=microblog.py
...
heroku ps:scale worker=1

Heroku addons requires validated account (linked credit-card), but they're on a free-plan (without expenses)

Docker

docker-machine create microblog
docker-machine env microblog
docker build -t microblog:latest .
docker run --name microblog -d -p 8000:5000 --rm \
    -e SECRET_KEY=my-secret-key \
    -e MAIL_SERVER=smtp.googlemail.com \
    -e MAIL_PORT=587 \
    -e MAIL_USE_TLS=true \
    -e MAIL_USERNAME=<your-gmail-username> \
    -e MAIL_PASSWORD=<your-gmail-password> \
    microblog:latest
docker stop microblog
docker rmi microblog
docker-machine kill microblog
docker-machine env -u

Docker compose

Create infrastructure

scripts/create-machine.sh
scripts/create-network.sh
scripts/up-compose.sh docker-compose.yml

Destroy infrastructure (soft)

scripts/prune.sh
scripts/down-compose.sh docker-compose.yml
scripts/kill-machine.sh

Destroy infrastructure (hard)

scripts/kill-machine.sh

avoidik/microblog

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