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mongodb-migrations-async
Advanced tools
MongoDB is a great NoSQL and schema-less database, but if already have data in database and you changed data schema, you need a migration tool to update your existing data.
use pip
$ pip install mongodb-migrations
from source code
$ python setup.py install
migrations
TIMESTAMP_description.py
, i.e.20160320145400_description.py
, otherwise migration file won't be found.20160320145400_description.py
create a class named Migration
and extends BaseMigration
upgrade
methodmongodb-migrate
to run migrationsmetastore
is an optional parameter of collection name where it stores the previous migrationsNow there is an easier way to create a migration file, command mongodb-migrate-create --description <description>
will create an empty migration file in migrations
folder or the folder provided by --migrations
.
If you don't wish to use the CLI, you can override the MigrationManager -> create_config and then call MigrationManager -> run. Example execution:
manager = MigrationManager()
manager.config.config_file = "foobar.ini"
manager.config._from_ini()
manager.run()
You can also use the same config to keep multiple keys, the manager allows you access by using:
ini_config_parser = manager.config.ini_parser
ini_config_parser.get('foo','bar')
mongodb-migrations
will try to load config.ini
first, if it's not found, default values will be used. If any command line argument is provided, it will override config from configuration file.
Database name or Url is mandatory
[mongo]
host = 127.0.0.1
port = 27017
database = test
migrations = migrations
metastore = database_migrations
[mongo]
url = mongodb://127.0.0.1:27017/test
migrations = migrations
[mongo]
url = mongodb://127.0.0.1:27017/admin
username = admin
password = secret123
database = test
migrations = migrations
metastore = database_migrations
mongodb-migrate --host 127.0.0.1 --port 27017 --database test --migrations examples
mongodb-migrate --url mongodb://127.0.0.1:27017/test --migrations examples
Migration files are located in examples
, run following command to run migrations:
$ MONGODB_MIGRATIONS_CONFIG=examples/config.ini mongodb-migrate
For Downgrading the migrations, you need to pass a command line switch --downgrade
To upgrade/downgrade only to a specific migration, use --to_datetime
. This command will upgrade to the migration with prefix 20191115180633
:
mongodb-migrate --url mongodb://127.0.0.1:27017/test --migrations examples --to_datetime 20191115180633
FAQs
A database migration tool for MongoDB
We found that mongodb-migrations-async demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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