41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
package storagemiddleware
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
storagedriver "github.com/distribution/distribution/v3/registry/storage/driver"
|
|
)
|
|
|
|
// InitFunc is the type of a StorageMiddleware factory function and is
|
|
// used to register the constructor for different StorageMiddleware backends.
|
|
type InitFunc func(ctx context.Context, storageDriver storagedriver.StorageDriver, options map[string]interface{}) (storagedriver.StorageDriver, error)
|
|
|
|
var storageMiddlewares map[string]InitFunc
|
|
|
|
// Register is used to register an InitFunc for
|
|
// a StorageMiddleware backend with the given name.
|
|
func Register(name string, initFunc InitFunc) error {
|
|
if storageMiddlewares == nil {
|
|
storageMiddlewares = make(map[string]InitFunc)
|
|
}
|
|
if _, exists := storageMiddlewares[name]; exists {
|
|
return fmt.Errorf("name already registered: %s", name)
|
|
}
|
|
|
|
storageMiddlewares[name] = initFunc
|
|
|
|
return nil
|
|
}
|
|
|
|
// Get constructs a StorageMiddleware with the given options using the named backend.
|
|
func Get(ctx context.Context, name string, options map[string]interface{}, storageDriver storagedriver.StorageDriver) (storagedriver.StorageDriver, error) {
|
|
if storageMiddlewares != nil {
|
|
if initFunc, exists := storageMiddlewares[name]; exists {
|
|
return initFunc(ctx, storageDriver, options)
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("no storage middleware registered with name: %s", name)
|
|
}
|