Symfony bundle for the Fregata migration framework.

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v1.0.0 2022-05-24 12:19 UTC

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Last update: 2022-09-24 13:17:12 UTC


Symfony bundle for the Fregata data migration framework. Provides an UI and executes migrations asynchronously using the Messenger component.

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  1. Requirements
  2. Installation
    1. Doctrine entities
    2. Messenger transport
    3. User interface
  3. User interface overview
    1. Main pages
    2. Run list
    3. Run details
  4. Starting a migration


This bundle requires PHP >= 8.1 and a Symfony 4.4 or 5 application. Note that as it uses a database, it will install the Doctrine bundle.

If you are not familiar with Fregata's features, make sure to read its documentation.


Install with Composer:

composer require aymdev/fregata-bundle

Doctrine entities

Then you will need to create the database tables for the provided entities (3 entities + a ManyToMany relation). You can do this how you want.

Suggestion: My preferred way to use database migrations is by using the MakerBundle and its make:migration command followed by Doctrine's doctrine:migrations:migrate command.

Messenger transport

As the main work of the bundle happens in Messenger components, you need to route the provided messages to a transport of your choice. Example config/packages/messenger.yaml:

            # You are entirely responsible for the transport configuration
            async: '%env(MESSENGER_TRANSPORT_DSN)%'

            # Every message implements the following interface, nothing more is needed
            'Fregata\FregataBundle\Messenger\FregataMessageInterface': async

User interface

To enable the user interface, import the routes by creating a config/routes/fregata.yaml file:

    resource: "@FregataBundle/Resources/config/routes.xml"
    prefix: /fregata

Change the prefix to anything you want, or remove it if you want to set the Fregata dashboard at the root of your app.

You can then reach the dashboard at /fregata.

User interface overview

Main pages

The dashboard lists the current migration runs, or the last one if nothing is running. The migrations page lists the currently configured migrations with a link to a dedicated page to get a quick overview with the list of components and the run history of a specific migration. The complete run history is on a separated page.

Run list

The table shown here is used in multiple pages of the user interface and contains:

  • the id of the migration run
  • the name of the migration with a link to the details page
  • the status tag
  • the time stats: start time, end time and duration
  • the number of components
  • a link to the run details

Run details

The same informations can be found on the run details: A cancel button is shown in the top right corner as long as the migration is running. The run is divided on 3 steps with tabs:

  • Before tasks
  • Migrators
  • After tasks

Each tab shows a progress bar and its associated components. The migrators are sorted according to their dependencies from left to right.

Starting a migration

You can start a migration from the user interface by clicking the "New run" button in the menu. Alternatively, the fregata:migration:execute console command is available:

php ./bin/console fregata:migration:execute

You should then see the run on the user interface.

If you want to run a migration as in the Fregata framework, without Messenger, you can add the --synchronous option.

Warning: by doing so, the migration runs in the foreground, doesn't use the database and can't show on the UI.