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woodpecker/bus/context.go
2016-04-12 17:27:24 -07:00

22 lines
443 B
Go

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