Do you use Flask with SQLAlchemy? Wow, what a coincidence!
This package lets you backup and restore all your data using SQLAlchemy dumps() method.
It is an easy way (one single command, I mean it) to save all the data stored in your database.
You can save it locally or in a remote server via FTP.
WARNING @baumatron've found an important bug: at this time this package won't backup non-standard mappings, such as many-to-many association tables. This is still an open issue and I have no expectation to fix is in the following weeks — pull requests are more tham welcomed.
First install the package: pip install Flask-AlchemyDumps
Then pass your Flask application and SQLALchemy database to it.
For example:
- The second line imports the object from the package.
- The last line instantiates
AlchemyDumpsfor your app and database.
from flask import Flask
from flask_alchemydumps import AlchemyDumps
from flask_sqlalchemy import SQLAlchemy
# init Flask
app = Flask(__name__)
# init SQLAlchemy and Flask-Script
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///app.db'
db = SQLAlchemy(app)
# init Alchemy Dumps
alchemydumps = AlchemyDumps(app, db)If you want to save your backup in a remote server via FTP, just make sure to set these environment variables replacing the placeholder information with the proper credentials:
export ALCHEMYDUMPS_FTP_SERVER=ftp.server.com
export ALCHEMYDUMPS_FTP_USER=johndoe
export ALCHEMYDUMPS_FTP_PASSWORD=secret
export ALCHEMYDUMPS_FTP_PATH=/absolute/path/If you want, there is a .env.sample inside the /tests folder. Just copy it to your application root folder, rename it to .env, and insert your credentials.
It is possible to use this package with application factories:
alchemydumps = AlchemyDumps()
def create_app(settings):
…
alchemydumps.init_app(app, db)
…You might want to add alchemydumps/ to your .gitignore. It is the folder where AlchemyDumps save the backup files.
Considering you have these models — that is to say, these SQLAlchemy mapped classes:
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(140), index=True, unique=True)
posts = db.relationship('Post', backref='author', lazy='dynamic')
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(140))
content = db.Column(db.UnicodeText)
author_id = db.Column(db.Integer, db.ForeignKey('user.id'))Just in case: this is a simple example, but you can use abstract mapped classes as well.
python manage.py alchemydumps createOutput:
==> 3 rows from User saved as /vagrant/alchemydumps/db-bkp-20141115172107-User.gz
==> 42 rows from Post saved as /vagrant/alchemydumps/db-bkp-20141115172107-Post.gz
python manage.py alchemydumps historyOutput:
==> ID: 20141114203949 (from Nov 15, 2014 at 17:21:07)
/vagrant/alchemydumps/db-bkp-20141115172107-User.gz
/vagrant/alchemydumps/db-bkp-20141115172107-Post.gz
==> ID: 20141115140629 (from Nov 15, 2014 at 14:06:29)
/vagrant/alchemydumps/db-bkp-20141115140629-User.gz
/vagrant/alchemydumps/db-bkp-20141115140629-Post.gz
python manage.py alchemydumps restore -d 20141115172107Output:
==> db-bkp-20141115172107-User.gz totally restored.
==> db-bkp-20141115172107-Post.gz totally restored.
python manage.py alchemydumps remove -d 20141115172107Output:
==> Do you want to delete the following files?
/vagrant/alchemydumps/db-bkp-20141115172107-User.gz
/vagrant/alchemydumps/db-bkp-20141115172107-Post.gz
==> Press "Y" to confirm, or anything else to abort: y
db-bkp-20141115172107-User.gz deleted.
db-bkp-20141115172107-Post.gz deleted.
The autoclean command follows these rules to delete backups:
- It keeps all the backups from the last 7 days.
- It keeps the most recent backup from each week of the last month.
- It keeps the most recent backup from each month of the last year.
- It keeps the most recent backup from each remaining year.
python manage.py alchemydumps autocleanOutput:
==> 8 backups will be kept:
ID: 20130703225903 (from Jul 03, 2013 at 22:59:03)
/vagrant/alchemydumps/db-bkp-20130703225903-User.gz
/vagrant/alchemydumps/db-bkp-20130703225903-Post.gz
ID: 20120405013054 (from Apr 05, 2012 at 01:30:54)
/vagrant/alchemydumps/db-bkp-20120405013054-User.gz
/vagrant/alchemydumps/db-bkp-20120405013054-Post.gz
ID: 20101123054342 (from Nov 23, 2010 at 05:43:42)
/vagrant/alchemydumps/db-bkp-20101123054342-User.gz
/vagrant/alchemydumps/db-bkp-20101123054342-Post.gz
ID: 20090708100815 (from Jul 08, 2009 at 10:08:15)
/vagrant/alchemydumps/db-bkp-20090708100815-User.gz
/vagrant/alchemydumps/db-bkp-20090708100815-Post.gz
ID: 20081208191908 (from Dec 08, 2008 at 19:19:08)
/vagrant/alchemydumps/db-bkp-20081208191908-User.gz
/vagrant/alchemydumps/db-bkp-20081208191908-Post.gz
ID: 20070114122922 (from Jan 14, 2007 at 12:29:22)
/vagrant/alchemydumps/db-bkp-20070114122922-User.gz
/vagrant/alchemydumps/db-bkp-20070114122922-Post.gz
ID: 20060911035318 (from Sep 11, 2006 at 03:53:18)
/vagrant/alchemydumps/db-bkp-20060911035318-User.gz
/vagrant/alchemydumps/db-bkp-20060911035318-Post.gz
ID: 20051108082503 (from Nov 08, 2005 at 08:25:03)
/vagrant/alchemydumps/db-bkp-20051108082503-User.gz
/vagrant/alchemydumps/db-bkp-20051108082503-Post.gz
==> 11 backups will be deleted:
ID: 20120123032442 (from Jan 23, 2012 at 03:24:42)
/vagrant/alchemydumps/db-bkp-20120123032442-User.gz
/vagrant/alchemydumps/db-bkp-20120123032442-Post.gz
ID: 20101029100412 (from Oct 29, 2010 at 10:04:12)
/vagrant/alchemydumps/db-bkp-20101029100412-User.gz
/vagrant/alchemydumps/db-bkp-20101029100412-Post.gz
ID: 20100526185156 (from May 26, 2010 at 18:51:56)
/vagrant/alchemydumps/db-bkp-20100526185156-User.gz
/vagrant/alchemydumps/db-bkp-20100526185156-Post.gz
ID: 20100423085529 (from Apr 23, 2010 at 08:55:29)
/vagrant/alchemydumps/db-bkp-20100423085529-User.gz
/vagrant/alchemydumps/db-bkp-20100423085529-Post.gz
ID: 20081006074458 (from Oct 06, 2008 at 07:44:58)
/vagrant/alchemydumps/db-bkp-20081006074458-User.gz
/vagrant/alchemydumps/db-bkp-20081006074458-Post.gz
ID: 20080429210254 (from Apr 29, 2008 at 21:02:54)
/vagrant/alchemydumps/db-bkp-20080429210254-User.gz
/vagrant/alchemydumps/db-bkp-20080429210254-Post.gz
ID: 20080424043716 (from Apr 24, 2008 at 04:37:16)
/vagrant/alchemydumps/db-bkp-20080424043716-User.gz
/vagrant/alchemydumps/db-bkp-20080424043716-Post.gz
ID: 20080405110244 (from Apr 05, 2008 at 11:02:44)
/vagrant/alchemydumps/db-bkp-20080405110244-User.gz
/vagrant/alchemydumps/db-bkp-20080405110244-Post.gz
ID: 20060629054914 (from Jun 29, 2006 at 05:49:14)
/vagrant/alchemydumps/db-bkp-20060629054914-User.gz
/vagrant/alchemydumps/db-bkp-20060629054914-Post.gz
ID: 20060329020048 (from Mar 29, 2006 at 02:00:48)
/vagrant/alchemydumps/db-bkp-20060329020048-User.gz
/vagrant/alchemydumps/db-bkp-20060329020048-Post.gz
ID: 20050324012859 (from Mar 24, 2005 at 01:28:59)
/vagrant/alchemydumps/db-bkp-20050324012859-User.gz
/vagrant/alchemydumps/db-bkp-20050324012859-Post.gz
==> Press "Y" to confirm, or anything else to abort. y
db-bkp-20120123032442-User.gz deleted.
db-bkp-20120123032442-Post.gz deleted.
db-bkp-20101029100412-User.gz deleted.
db-bkp-20101029100412-Post.gz deleted.
db-bkp-20100526185156-User.gz deleted.
db-bkp-20100526185156-Post.gz deleted.
db-bkp-20100423085529-User.gz deleted.
db-bkp-20100423085529-Post.gz deleted.
db-bkp-20081006074458-User.gz deleted.
db-bkp-20081006074458-Post.gz deleted.
db-bkp-20080429210254-User.gz deleted.
db-bkp-20080429210254-Post.gz deleted.
db-bkp-20080424043716-User.gz deleted.
db-bkp-20080424043716-Post.gz deleted.
db-bkp-20080405110244-User.gz deleted.
db-bkp-20080405110244-Post.gz deleted.
db-bkp-20060629054914-User.gz deleted.
db-bkp-20060629054914-Post.gz deleted.
db-bkp-20060329020048-User.gz deleted.
db-bkp-20060329020048-Post.gz deleted.
db-bkp-20050324012859-User.gz deleted.
db-bkp-20050324012859-Post.gz deleted.
AlchemyDumps is tested and should work with Python 3.6+.
If you wanna run the tests for the current Python version:
poetry install
poetry run nosetestsWe also use some style and quality checkers:
poetry run black . --check
poetry run flake8 flask_alchemydumps/ tests/If you wanna cover all supported Python version, you need them installed and available via pyenv. Then just poetry run tox.