23 lines
470 B
Go
23 lines
470 B
Go
package cache
|
|
|
|
import (
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
const key = "cache"
|
|
|
|
// Setter defines a context that enables setting values.
|
|
type Setter interface {
|
|
Set(string, interface{})
|
|
}
|
|
|
|
// FromContext returns the Cache associated with this context.
|
|
func FromContext(c context.Context) Cache {
|
|
return c.Value(key).(Cache)
|
|
}
|
|
|
|
// ToContext adds the Cache to this context if it supports
|
|
// the Setter interface.
|
|
func ToContext(c Setter, cache Cache) {
|
|
c.Set(key, cache)
|
|
}
|