harness-drone/remote/context.go
2015-10-19 10:41:57 -07:00

31 lines
652 B
Go

package remote
import (
"code.google.com/p/go.net/context"
)
const reqkey = "remote"
// NewContext returns a Context whose Value method returns
// the applications Remote instance.
func NewContext(parent context.Context, v Remote) context.Context {
return &wrapper{parent, v}
}
type wrapper struct {
context.Context
v Remote
}
// Value returns the named key from the context.
func (c *wrapper) Value(key interface{}) interface{} {
if key == reqkey {
return c.v
}
return c.Context.Value(key)
}
// FromContext returns the Remote associated with this context.
func FromContext(c context.Context) Remote {
return c.Value(reqkey).(Remote)
}