Package godoc_vfs
Package godoc_vfs contains a driver that reads migrations from a virtual file
system.
Implementations of the filesystem interface that read from zip files and
maps, as well as the definition of the filesystem interface can be found in
the golang.org/x/tools/godoc/vfs package.
▾ Example (Mapfs)
Code:
fs := mapfs.New(map[string]string{
"1_foobar.up.sql": "1 up",
"1_foobar.down.sql": "1 down",
"3_foobar.up.sql": "3 up",
"4_foobar.up.sql": "4 up",
"4_foobar.down.sql": "4 down",
"5_foobar.down.sql": "5 down",
"7_foobar.up.sql": "7 up",
"7_foobar.down.sql": "7 down",
})
d, err := godoc_vfs.WithInstance(fs, "")
if err != nil {
panic("bad migrations found!")
}
m, err := migrate.NewWithSourceInstance("godoc-vfs", d, "database://foobar")
if err != nil {
panic("error creating the migrations")
}
err = m.Up()
if err != nil {
panic("up failed")
}
func WithInstance(fs vfs.FileSystem, searchPath string) (source.Driver, error)
WithInstance creates a new driver from a virtual file system.
If a tree named searchPath exists in the virtual filesystem, WithInstance
searches for migration files there.
It defaults to "/".
VFS is an implementation of driver that returns migrations from a virtual
file system.
type VFS struct {
httpfs.PartialDriver
}
func (*VFS) Open
¶
func (b *VFS) Open(url string) (source.Driver, error)
Open implements the source.Driver interface for VFS.
Calling this function panics, instead use the WithInstance function.
See the package level documentation for an example.