atlas-provider-beego

README

atlas-provider-beego

Load beego schemas into an Atlas project.

Use-cases

1. Declarative migrations - use a Terraform-like atlas schema apply --env beego to apply your beego schema to the database.
2. Automatic migration planning - use atlas migrate diff --env beego to automatically plan a migration from
   the current database version to the beego schema.

Installation

Install Atlas from macOS or Linux by running:

curl -sSf https://atlasgo.sh | sh

See atlasgo.io for more installation options.

Install the provider by running:

go get -u ariga.io/atlas-provider-beego

Standalone

If your application contains a package that registers all of its Beego models during initialization, you can use the provider directly to load your Beego schema into Atlas.

In your project directory, create a new file named atlas.hcl with the following contents:

data "external_schema" "beego" {
  program = [
    "go",
    "run",
    "-mod=mod",
    "ariga.io/atlas-provider-beego",
    "load",
    "--path", "./path/to/models",
    "--dialect", "mysql", // | postgres | sqlite3
  ]
}

env "beego" {
  src = data.external_schema.beego.url
  dev = "docker://mysql/8/dev"
  migration {
    dir = "file://migrations"
  }
  format {
    migrate {
      diff = "{{ sql . \"  \" }}"
    }
  }
}

As Go File

If you want to use the provider as a Go file, you can use the provider as follows:

Create a new program named loader/main.go with the following contents:

package main

import (
  "io"
  "os"

  "ariga.io/atlas-provider-beego/beegoschema"
  "github.com/<yourorg>/<yourrepo>/path/to/models"
)

func main() {
  stmts, err := beegoschema.New("mysql").Load()
  if err != nil {
    fmt.Fprintf(os.Stderr, "failed to load beego schema: %v\n", err)
    os.Exit(1)
  }
  io.WriteString(os.Stdout, stmts)
}

// If your models are already registered in an init() function elsewhere, you can simply use
// a blank import to ensure that the init() function is called. Otherwise, you can register
// your models here.
func init() {
	orm.RegisterModel(new(models.User), new(models.Group))
}

In your project directory, create a new file named atlas.hcl with the following contents:

data "external_schema" "beego" {
  program = [
    "go",
    "run",
    "-mod=mod",
    "./loader",
  ]
}

env "beego" {
  src = data.external_schema.beego.url
  dev = "docker://mysql/8/dev"
  migration {
    dir = "file://migrations"
  }
  format {
    migrate {
      diff = "{{ sql . \"  \" }}"
    }
  }
}

Usage

Once you have the provider installed, you can use it to apply your beego schema to the database.

Apply

You can use the atlas schema apply command to plan and apply a migration of your database to your current beego schema. This works by inspecting the target database and comparing it to the desired schema and creating a migration plan. Atlas will prompt you to confirm the migration plan before applying it to the database.

atlas schema apply --env beego -u "mysql://root:password@localhost:3306/mydb"

Where the -u flag accepts the URL to the target database.

Diff

Atlas supports a version migration workflow, where each change to the database is versioned and recorded in a migration file. You can use the atlas migrate diff command to automatically generate a migration file that will migrate the database from its latest revision to the current beego schema.

atlas migrate diff --env beego 

Supported Databases

The provider supports the following databases:

• MySQL
• PostgreSQL
• SQLite

Issues

Please report any issues or feature requests in the ariga/atlas repository.

License

This project is licensed under the Apache License 2.0.