backend

package

v0.4.0 Latest Latest Go to latest Published: Apr 19, 2018 License: MIT Imports: 2 Imported by: 0

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var (
	// ErrNotFound is returned by the backends given key is not found.
	ErrNotFound = errors.New("key not found")
)

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type Backend interface {
	Get(ctx context.Context, key string) ([]byte, error)
	Name() string
}

A Backend is used to fetch values from a given key.

func Func(name string, fn func(context.Context, string) ([]byte, error)) Backend

Func creates a Backend from a function.

type ValueUnmarshaler interface {
	UnmarshalValue(ctx context.Context, key string, to interface{}) error
}

A ValueUnmarshaler decodes a value identified by a key into a target.