Package iofs

package iofs_test

import (
    "embed"
    "log"

    "github.com/golang-migrate/migrate/v4"
    _ "github.com/golang-migrate/migrate/v4/database/postgres"
    "github.com/golang-migrate/migrate/v4/source/iofs"
)

//go:embed testdata/migrations/*.sql
var fs embed.FS

func Example() {
    d, err := iofs.New(fs, "testdata/migrations")
    if err != nil {
        log.Fatal(err)
    }
    m, err := migrate.NewWithSourceInstance("iofs", d, "postgres://postgres@localhost/postgres?sslmode=disable")
    if err != nil {
        log.Fatal(err)
    }
    err = m.Up()
    if err != nil {
        // ...
    }
    // ...
}

func New ¶

func New(fsys fs.FS, path string) (source.Driver, error)

New returns a new Driver from io/fs#FS and a relative path.

type PartialDriver ¶

PartialDriver is a helper service for creating new source drivers working with io/fs.FS instances. It implements all source.Driver interface methods except for Open(). New driver could embed this struct and add missing Open() method.

To prepare PartialDriver for use Init() function.

type PartialDriver struct {
    // contains filtered or unexported fields
}

func (*PartialDriver) Close ¶

func (d *PartialDriver) Close() error

Close is part of source.Driver interface implementation. Closes the file system if possible.

func (*PartialDriver) First ¶

func (d *PartialDriver) First() (version uint, err error)

First is part of source.Driver interface implementation.

func (*PartialDriver) Init ¶

func (d *PartialDriver) Init(fsys fs.FS, path string) error

Init prepares not initialized IoFS instance to read migrations from a io/fs#FS instance and a relative path.

func (*PartialDriver) Next ¶

func (d *PartialDriver) Next(version uint) (nextVersion uint, err error)

Next is part of source.Driver interface implementation.

func (*PartialDriver) Prev ¶

func (d *PartialDriver) Prev(version uint) (prevVersion uint, err error)

Prev is part of source.Driver interface implementation.

func (*PartialDriver) ReadDown ¶

func (d *PartialDriver) ReadDown(version uint) (r io.ReadCloser, identifier string, err error)

ReadDown is part of source.Driver interface implementation.

func (*PartialDriver) ReadUp ¶

func (d *PartialDriver) ReadUp(version uint) (r io.ReadCloser, identifier string, err error)

ReadUp is part of source.Driver interface implementation.