Migratable 1.2.0

Migratable

Simple, efficient, and tested .Net Core database migrations supporting multiple database technologies.

Status

Fully working. IProvider implementations are easy to create (there is an example in the Example project).

Available on github:

• Migratable - https://github.com/kcartlidge/migratable
• Migratable.MySqlProvider - https://github.com/kcartlidge/migratable.mysqlprovider

Available on nuget:

• Migratable - https://www.nuget.org/packages/Migratable
• Migratable.MySqlProvider - https://www.nuget.org/packages/Migratable.MySqlProvider

Using Migratable

Migratable itself is a versioned database migration manager. In order to do anything, it requires either a custom or a pre-written provider.

There is an Example project which is simple and self-contained. Methods available are discoverable and obvious.

// Configure.
var provider = new SampleProvider();
var notifier = new SampleNotifier();
var migrator = new Migratable.Migrator(provider);
migrator.SetNotifier(notifier);

// Load from the 'migrations' folder.
migrator.LoadMigrations("./migrations");

// Migrate from the current version to version 5.
migrator.SetVersion(5);
var newCurrentVersion = migrator.GetVersion();

The code above passes in the folder ./migrations. That folder should contain something like:

\migrations
    \001 Create accounts
        up.sql
        down.sql
    \002 Populate accounts
        up.sql
        down.sql

In each case above, the subfolder name is preceeded by the version sequence. The up.sql file would contain the SQL needed to "Create accounts". The down.sql file would contain the SQL needed to reverse that action.

You must start at version one and you cannot omit a version in the sequence. You may also not have duplicate version numbers.

For developers working on Migratable itself

If you only intend making use of Migratable in your own projects read no further.

Generating a build and running the tests

There is no need to generate a build as Migratable is a class library not an application. If you run the tests, a build is generated anyway automatically:

cd Migratable.Tests
dotnet test

Creating a new version for Nuget

The Migratable/Migratable.csproj file contains Nuget settings. Within that file, update the version number then create the Nuget package:

cd Migratable
dotnet build
dotnet pack

Forcing another project to get the latest from Nuget

It sometimes takes a while for a new version to be available after pushing. You may be able to speed up the process:

cd <other-project>
dotnet restore --no-cache

MIT Licence

Copyright (c) 2018 K Cartlidge

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.