woodpecker/stream/context.go
2016-04-22 17:35:32 -07:00

21 lines
464 B
Go

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